JP2008280062A - Glass substrate transport box and glass substrate transport package - Google Patents

Abstract

To provide a glass substrate transport box excellent in protection of a large glass substrate.
A box comprising a box body 2 and a lid 60 that horizontally accommodates a plurality of glass substrates α stacked in a plate thickness direction, the box body comprising: a box body portion 10; It comprises a glass substrate abutting portion 30, a glass substrate abutting partition portion 40 and a buffer portion 50 provided in the box body portion, and the abutting portion 30 is a pair of side wall portions opposed to the box body portion. Provided on one inner surface, the abutment partition 40 is provided to be parallel to the opposite side wall not provided with the glass substrate abutment, and the corresponding partition 40 and the side wall The buffer portion 50 is provided between the inner surface of the box body and at least one of the two surfaces constituting the corner of the glass substrate stored in the vicinity of the four corners of the box body is the contact portion 30 or the contact surface. Partition 40 Was box provided so as not to be in contact.
[Selection] FIG.

Description

  The present invention relates to a glass substrate transport box and a glass substrate transport package, and more specifically, horizontally in a state where a glass substrate is laminated in a thickness direction in a transport box formed of a thermoplastic resin foam. The present invention relates to a box for transporting a glass substrate and a packaging body for transporting a glass substrate.

  Conventionally, glass substrate transport boxes made of thermoplastic resin foam have been used to transport glass substrates (including finished panels) between glass manufacturers, color filter manufacturers, device manufacturers, etc. .

As such a glass substrate transport box, as described in Patent Document 1 or 2, a box body made of a thermoplastic resin foam having an upper surface opened, and a thermoplastic resin foam that closes the upper surface opening of the box body. A plurality of vertical grooves provided on the inner surface of the opposing side wall of the box body, and the glass substrate is individually supported perpendicularly to the bottom surface of the box between the vertical grooves. There is a type in which the glass substrates are accommodated in a state of being arranged in parallel in the thickness direction with a predetermined interval.
The technique described in Patent Document 1 is such that the vertical groove is formed directly on the inner surface of the side wall of the box body. However, the technique described in Patent Document 2 is an L-shape that is detachable from the box body. Improve the versatility of the transport box by providing a shaped buffer, forming the vertical groove on the inner surface of the L-shaped buffer, and changing the buffer according to the size of the glass substrate to be accommodated It has been made.

  In Patent Document 3, a box body and a lid having an opening on the upper surface are formed of a polyolefin resin foam, and glass substrates and spacers are alternately stacked in the thickness direction in the box body. A type of glass substrate transport box has been proposed.

JP 7-132986 A JP-A-8-301354 JP 2004-106882 A

  By the way, in recent years, due to the increasing demand for large-sized liquid crystal televisions, large glass substrates having a side (long side) exceeding 1000 mm have been adopted as glass substrates for liquid crystal televisions.

  Here, in a transport box of a type that supports both ends of the glass substrate by vertical grooves formed on the inner wall of the box body facing each other as described in Patent Document 1 or 2, the glass substrate As the size of the glass substrate increases and the weight increases due to this, the glass substrate itself may undesirably bend and deform due to its own weight, and a compressive load concentrated on the bottom plate portion receiving the lower end of the glass substrate works. There is a risk that the cushion function or the impact mitigating function cannot be exhibited. For this reason, when transporting a large glass substrate, there is a high possibility that the glass substrate will be damaged due to an impact during transport, and the like, leaving room for improvement in the protection of the glass substrate.

  On the other hand, as described in Patent Document 3, in the case of a transport box of a type in which glass substrates and spacers are alternately stacked in the thickness direction in the box body and stored horizontally, the plate surface of the glass substrate Since the spacer is protected by the spacer and the spacer receives the glass substrate evenly, there is no possibility that the glass substrate is bent and deformed by its own weight even when a large glass substrate is transported. Although the surface protection is excellent, in the technique described in Patent Document 3, protection for the edge of the glass substrate is not taken into consideration at all and mistakenly during transportation. When the box is dropped, the impact is concentrated on the end portion of the glass substrate, particularly the corner portion, and there is a high possibility that the glass substrate is damaged.

  The present invention has been made in view of the problems of the background art described above, and its purpose is to convey a glass substrate that is excellent in protecting a large glass substrate, particularly in protecting the end of a large glass substrate. An object of the present invention is to provide a packaging box for transporting a glass box and a glass substrate.

  In order to achieve the above-described object, the present invention of claim 1 is a box body made of a thermoplastic resin foam having an open upper surface for horizontally accommodating a plurality of glass substrates laminated in the thickness direction, A box for transporting a glass substrate comprising a lid made of a thermoplastic resin foam that closes an upper surface opening of the box body, wherein the box body is provided in the box body part and the box body part The box body portion includes a rectangular bottom plate portion and a side wall portion that rises from a peripheral edge of the bottom plate portion, and includes a glass substrate contact portion, a glass substrate contact partition portion, and a buffer portion. The contact portion is provided on an inner surface of one of the two side wall portions facing each other of the box body portion, and the glass substrate contact partition portion is provided with a glass substrate contact portion. A pair of glass substrates is provided in a state of bridging the inner surfaces of the side walls of the box main body provided with the glass substrate abutting portion so as to be parallel to the other opposite side wall. The buffer substrate is provided between the contact partition portion and the inner surface of the other side wall portion where the glass substrate contact portion is not provided, and the glass substrate is stored at least near the four corners of the box body. The glass substrate abutment portion and the glass substrate abutment partition portion are provided so that at least one of the two surfaces constituting the corner of the glass substrate abutment portion or the glass substrate abutment partition portion does not contact the glass substrate abutment portion or the glass substrate abutment partition portion. It was set as the box for glass substrate conveyance.

  According to a second aspect of the present invention, there is provided the glass substrate carrying box according to the first aspect of the invention, wherein the buffer portion is provided in the vicinity of the four corners of the box body.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the bottom plate portion of the box body portion has a ratio of a short side dimension to a long side dimension of 1 to 1.3 to 1 pair. The glass substrate carrying box has a rectangular shape of 2 and the height of the side wall portion of the box body portion is 1/3 or less of the short side dimension of the bottom plate portion of the box body portion.

  According to a fourth aspect of the present invention, there is provided the glass substrate according to the third aspect of the invention, wherein the glass substrate abutment partitioning portion is provided so as to be parallel to the side wall portion on the opposite short side. A transport box was used.

  Further, the present invention of claim 5 is the invention according to any one of claims 1 to 4, wherein the glass substrate contact part, the glass substrate contact partition part and the buffer part are detachable from the box body part. It was set as the glass substrate conveyance box comprised from a different member.

Further, the present invention of claim 6 is the invention according to any one of claims 1 to 5, wherein the glass substrate contact part, the glass substrate contact partition part and the buffer part have an apparent density of 10 to 90 kg / m ^3. It was set as the box for glass substrate conveyance which is the polyolefin resin foam of this.

Further, the present invention of claim 7 is the invention according to any one of claims 1 to 6, wherein the thermoplastic resin foam forming the box body and the lid has an apparent density of 45 to 300 kg / m ³ [ However, the apparent density of the box body and lid is equal to or greater than the apparent density of the glass substrate abutting portion, glass substrate abutting partitioning portion and buffer portion). It was set as the box for glass substrate conveyance which is a body.

In order to achieve the above-described object, the present invention of claim 8 is a state in which a plurality of glass substrates are laminated in the thickness direction on the glass substrate transport box according to any one of claims 1 to 7. In the package for transporting a glass substrate horizontally accommodated, the apparent density is 60 to 300 kg / m ³ , the thickness is 0.3 to 5 mm, and the surface resistivity is between the laminated glass substrates. It was set as the packaging body for glass substrate conveyance which interposed the resin sheet which is less than 5.0 * 10 < ¹³ > (omega | ohm) and a bending elastic modulus is 80-800 MPa.

  The present invention of claim 9 is the glass substrate carrying package according to the invention of claim 8, wherein the resin sheet is a polyolefin resin foam sheet.

  According to the box for carrying a glass substrate according to the first aspect of the present invention, since the box body and the lid are formed of a thermoplastic resin foam, the glass substrate is excellent in protection of the glass substrate while being lightweight. It will be. In addition, since the bottom plate portion of the box main body portion is rectangular, when the glass substrates that are similarly rectangular are stacked horizontally in the thickness direction, the storage efficiency is high. Furthermore, the end of the glass substrate to be stored does not directly contact the side wall of the box main body, but is provided through the glass substrate abutting portion or the glass substrate abutting partition portion, so that the protection is improved. It becomes. In particular, even when the transport box is accidentally dropped during transport, the impact is received by the glass substrate contact portion or the glass substrate contact partition portion, and the glass substrate contact partition portion and the glass substrate contact partition portion, Since the buffer structure consisting of the buffer part provided between the partition part and the side wall part of the box body part acts as an air spring and effectively absorbs and relaxes the impact, the glass substrate is further excellent in protection. Become. In addition, the transport box of the present invention has at least one of the two surfaces constituting the corner of the glass substrate to be accommodated at least near the four corners of the box body. Since the glass substrate contact part and the glass substrate contact partitioning part are provided so as not to contact the part, the impact at the time of dropping can escape in the direction not contacting without concentrating on the corner part of the glass substrate. It is possible to effectively prevent the glass substrate from cracking.

  Further, according to the above-described glass substrate transport box according to the second aspect of the present invention, the impact at the time of dropping is concentrated particularly on the corner portion. Since absorption can be effectively relaxed, the glass substrate to be stored is more excellent in protection.

  Moreover, according to the above-mentioned glass substrate transport box according to the third aspect of the present invention, the ratio of the short side dimension to the long side dimension of the bottom plate part of the box main body part is 1 to 1.3 to 1 to 2. Since it is rectangular, a rectangular glass substrate having the same ratio can be accommodated more efficiently. Further, the height of the side wall portion of the box main body portion is 1/3 or less of the short side dimension of the bottom plate portion, that is, the box main body portion is a flat box having a low height with respect to the length and width. It becomes easy to accommodate and take out the glass substrate in the box body.

  Moreover, according to the box for glass substrate conveyance which concerns on this invention of above-mentioned Claim 4, since the combined structure of a glass substrate contact partition part and a buffer part is formed in the side wall part by the short side, most glass Even when falling from the corner of the box where the impact per unit area on the substrate is large or falling from the short side of the box, the shock applied to the glass substrate is effective due to the buffer structure consisting of the glass substrate abutment partition and buffer. Therefore, the glass substrate can be further improved in protection.

  According to the glass substrate carrying box of the present invention described in claim 5, the glass substrate abutting portion, the glass substrate abutting partition portion and the buffer portion are separated from the box main body portion. Therefore, even if the glass substrate abutting member, the glass substrate abutting partition member or the buffer member is soiled or damaged, only that member can be replaced, so that the replacement cost can be reduced. Further, by rearranging the glass substrate abutting member, the glass substrate abutting partition member, and the buffer member, it becomes possible to transport glass substrates of various sizes using one transport box.

According to the glass substrate transport box of the present invention described in claim 6, the glass substrate contact portion, the glass substrate contact partition portion, and the buffer portion have an apparent density of 10 to 90 kg / m ³ . Since it is formed of a resin foam, the cushioning property is good and the deformation is appropriate, so that the glass substrate to be stored can be well protected.

According to the glass substrate carrying box of the present invention described in claim 7, the box body and the lid are foamed using a polyolefin resin having an apparent density of 45 to 300 kg / m ³ as a base resin. Because it is composed of in-mold foam moldings of particles, it has an excellent balance between strength and flexibility, and it is difficult for dust to be generated when friction with the glass substrate occurs. At low cost.

Moreover, according to the glass substrate transport package according to the present invention described in claim 8, the apparent density is 60 to 300 kg / m ³ in the glass substrate transport box according to any one of claims 1 to 7. In the thickness direction of the glass substrate, a resin sheet having a thickness of 0.3 to 5 mm, a surface resistivity of less than 5.0 × 10 ¹³ Ω, and a flexural modulus of 80 to 800 MPa is interposed between the glass substrates. Since it is stacked and stored horizontally, the storage efficiency is high, and the glass substrate can be sufficiently protected when transported, and the resin sheet has sufficient stiffness, so it is automatically packed by a robot or the like. It becomes possible to correspond to the line.

  Further, according to the package for transporting a glass substrate according to the present invention of claim 9 described above, since the resin sheet is a polyolefin resin foam sheet, the balance between the surface hardness and the resilience strength, and the light weight can be achieved. It is excellent, and it is difficult to generate dust when friction with the glass substrate occurs, and is particularly suitable for protecting the glass substrate.

  Hereinafter, embodiments of a glass substrate transport box and a glass substrate transport package according to the present invention will be described in detail.

The glass substrate transport box according to the present invention includes a box main body made of a thermoplastic resin foam having an open upper surface for horizontally accommodating a plurality of glass substrates stacked in the thickness direction, and an upper surface of the box main body. The box body includes a box body portion, a glass substrate contact portion provided in the box body portion, a glass substrate contact partition portion, and a lid body made of a thermoplastic resin foam that closes the opening. It consists of a buffer part.
In the present invention, “horizontal” means parallel to the bottom plate of the box body.

  Examples of the glass substrate accommodated in the glass substrate transport box according to the present invention include various known glass substrates, such as a raw glass substrate, a glass substrate for liquid crystal display, a glass substrate for plasma display, and a thermal head. Glass substrates such as glass substrates for glass, color filters, etc., or glass substrates such as TFT (thin film transistor) -formed glass substrates manufactured using these glass substrates and finished panels called liquid crystal cells. It is preferable that the protective film which can be peeled by hand is laminated | stacked on both the plate | board surfaces of these glass substrates accommodated.

  The said box main-body part of this invention consists of a square-shaped baseplate part and the side wall part which stands | starts up from the periphery of this baseplate part. The rectangular bottom plate portion of the box main body portion is preferably a rectangular shape having a ratio of the short side dimension to the long side dimension of 1 to 1.3 to 1: 2, and more preferably 1 to 1.5 to 1. A rectangular shape of 1 to 2 is preferable, and a rectangular shape of 1 to 1.6 to 1 to 1.8 is particularly preferable. This is because the ratio of the short side dimension to the long side dimension of the glass substrate to be accommodated is approximately 3 to 4 or 9 to 16, so that the glass substrate is horizontally accommodated while being laminated in the thickness direction. The ratio of the short side dimension to the long side dimension of the bottom plate part of the main body part is preferably in the above range, which is substantially the same ratio as the glass substrate, from the viewpoint of accommodation efficiency.

  Further, the height of the side wall portion of the box body portion of the present invention is preferably 1/3 or less of the short side dimension of the rectangular bottom plate portion, more preferably 1/5 or less, In particular, it is preferably 1/10 or less. This is because, when the height of the side wall is as described above, the box body becomes a flat box with a shallow depth, and the glass substrate can be easily housed and taken out, thereby improving workability. preferable. In addition, the minimum of the height of a side wall part is about 1/20 of the short side dimension of a baseplate part from a viewpoint of accommodation efficiency.

  A glass substrate abutting portion is provided on the inner surface of one of the two side walls facing each other of the box body of the present invention. In addition, the side wall of the box main body portion provided with the glass substrate contact portion so that the glass substrate contact partition portion is parallel to the opposite side wall portion where the glass substrate contact portion is not provided. A pair of cushioning portions are provided between the glass substrate contact partitioning portion and the inner surface of the other side wall portion where the glass substrate contact portion is not provided. Yes. As a result, the end of the glass substrate to be stored does not directly contact the side wall portion of the box main body portion, but passes through the glass substrate abutting portion or the glass substrate abutting partition portion, thereby protecting the end of the glass substrate. Will be improved. In addition, even when the transport box is accidentally dropped during transport or the like, the impact is received by the glass substrate contact part or the glass substrate contact partition part, and the glass substrate contact partition part, Since the buffer structure comprising the buffer part provided between the partition part and the side wall part of the box body part acts as an air spring and effectively absorbs and relaxes the impact, the glass substrate is further excellent in protection. It will be a thing.

  Further, in addition to the above, the box body of the present invention has at least four corners of the glass substrate to be accommodated at least in the vicinity of the four corners of the box body (portions shown by fan-shaped dotted lines in FIG. 21). The glass substrate contact portion and the glass substrate contact partition portion are provided so that one surface does not contact the glass substrate contact portion or the glass substrate contact partition portion. As a result, even if the transport box is accidentally dropped during transport, the impact can be released in a direction not contacting without concentrating on the corners of the glass substrate, and the glass substrate is broken. Can be more effectively prevented.

The buffer portion provided between the glass substrate abutment partition portion and the side wall portion of the box main body portion is preferably provided partially from the viewpoint of performing an air spring-like action, material cost, etc. In this case, it is preferable to provide at least near the four corners of the box body. This is because the impact at the time of dropping is concentrated particularly on the corners and the glass substrate abutment partitioning part is easily deformed greatly, but this deformation can be effectively prevented by the buffer parts provided near the four corners of the box body. In addition, since the shock absorbing structure can be appropriately dispersed with respect to the impact applied to the glass substrate, it is preferable because the protection property of the glass substrate is particularly excellent. From this point of view, as shown in FIG. 21, the buffer portion is arranged such that a part of the buffer portion is further outside than the corner portion of the glass substrate to be accommodated (longitudinal end portion side of the glass substrate contact partition portion). More preferably, it is provided in the vicinity of the four corners of the box main body.
Further, the combination structure of the glass substrate abutment partitioning portion and the buffer portion is such that when the box body portion is a rectangular shape having a short side and a long side, the side wall on the short side of the box body portion It is preferable to be provided in the part. This is because the impact applied to the glass substrate is reduced from the glass substrate abutment partitioning part and the buffer part even when falling from the corner of the box where the impact per unit area on the glass substrate is the largest and when falling from the short side of the box. Since it can absorb effectively by the buffer structure which becomes, since it becomes what was further excellent in the protection property of a glass substrate, it is preferable.

  As a method for forming the glass substrate contact portion, the glass substrate contact partitioning portion, and the buffer portion on the box body portion, for example, the thermoplastic resin foam particles are filled in a mold, and the glass substrate contact is formed together with the box body portion. There is a method of integrally forming the contact portion, the glass substrate abutment partition portion, and the buffer portion. In the case of this method, when the thermoplastic resin foam particles are filled in the mold and molded, the base resin different from the box main body portion and the glass substrate contact portion, the glass substrate contact partitioning portion, and the buffer portion are formed. Alternatively, the glass substrate contact portion, the glass substrate contact partition portion, and the buffer portion can be formed by filling expanded particles having different apparent densities.

  In addition, as a method for forming the part, for example, a box body part, a glass substrate contact part, a glass substrate contact partition part, and a buffer part are separately formed, and a method of bonding by an adhesive or heat fusion, Furthermore, the engaging means is provided in each of the box body portion formed separately, the glass substrate abutting member, the glass substrate abutting portion partition member, and the buffer member, and the both are detachably attached by the engaging means. Is mentioned. Among these methods, a method of detachably fixing the box main body portion and other members using the engaging means is particularly preferable. This is because if the glass substrate contact part, the glass substrate contact partition part and the buffer part are detachable separate members, the glass substrate contact part, glass substrate contact partition part or buffer part made of the member is damaged. In the case of being dirty or dirty, it is preferable to replace only the member, which is preferable because it can be repaired at a low cost. Furthermore, glass substrates of various sizes can be accommodated by changing the shape, size, locking location, etc. of the glass substrate abutting member, glass substrate abutting partition member and buffer member according to the size of the glass substrate to be accommodated. This is preferable because it becomes possible. The glass substrate contact part, the glass substrate contact partition part, and the buffer part are separate members that are detachable from the box body part. These members are called buffer members, and these members may be molded products of thermoplastic resin foam particles.

  As means for engaging the glass substrate abutting member with the box main body, the glass substrate abutting member is engaged with a groove formed in the side wall of the box main body so as to be detachable. It is more preferable that a convex portion is provided on the glass substrate abutting member and the convex portion and the groove are locked in a detachable state. In this case, the glass substrate contact member can be easily attached and detached, but it is possible to effectively prevent the glass substrate contact member from being displaced, which may occur during handling or transportation. Further, when the groove formed on the side wall is a dovetail groove and the protrusion provided on the glass substrate abutting member is an ant, and both are bonded by ant bond, the glass substrate contact Since it is possible to effectively prevent the contact member from falling off the side wall, it is particularly preferable.

  Further, as means for engaging the glass substrate contact partition member with the box body portion, the glass substrate contact partition member is inserted into a recess formed on the bottom plate surface of the box body portion and / or the back surface of the lid. It is preferable to have a structure that locks by this. With this locking structure to the recess, the glass substrate abutment partition member can be easily attached and detached, but even when a large load is applied to the glass substrate abutment partition member during handling or transportation, It is preferable because the deformation of the substrate contact partition member can be minimized and the glass substrate can be effectively protected. Further, in addition to the locking structure for the recess, it is more preferable to lock the end portion of the glass substrate abutment partition member by a groove formed in the side wall portion of the box main body portion. It will be excellent in protection.

  Further, as means for providing the buffer member between the glass substrate abutment partition member and the side wall portion of the box body portion, the buffer member can be attached and detached by engaging the buffer member with a groove formed in the side wall portion of the box body portion. It is preferable to lock in the state, and it is more preferable to provide the buffer member with a convex portion and lock the convex portion and the groove in a detachable state. In this case, it is preferable that the buffer member can be easily detached and attached, but the buffer member can be effectively prevented from being displaced during handling or conveyance. Furthermore, when the groove formed in the side wall portion is an ant groove, and the convex portion provided on the buffer member is an ant, and both are joined by ant coupling, from the side wall portion of the buffer member, This is particularly preferable because it can effectively prevent the drop-off of. The buffer member is preferably in contact with the side portion of the glass substrate contact partition member in a state where the buffer member is locked to the side wall portion of the box main body portion by the engaging means, but there is a slight gap (several mm). May be.

  As described above, the upper surface opening of the box main body including the box main body portion, the glass substrate contact portion provided in the box main body portion, the glass substrate contact partitioning portion, and the buffer portion is closed by the lid. As for the engagement between the box body and the lid, the frictional force between the thermoplastic resin foams is large, so that a simple fitting is sufficient. However, when it is necessary to strengthen the engagement, the area of the engaging portion may be increased, for example, a portion where both are engaged is formed in a waveform. In addition, when replacing the gas in the box, a gas inlet is installed at an appropriate location on the box body or lid.

  The box main body and the lid of the present invention are both formed of a thermoplastic resin foam. As the base resin of this thermoplastic resin foam, polyolefin resin, polystyrene, impact-resistant polystyrene, etc. Examples thereof include polystyrene resins, polyethylene succinates, polyethylene terephthalates, polyester resins such as polylactic acid, and the like. Among these resins, a polyolefin-based resin is preferable from the viewpoint that it has an excellent balance between strength and flexibility and hardly generates dust when rubbed with a glass substrate.

The said polyolefin resin said in this invention corresponds to either of following (a)-(e).
(A) A homopolymer of ethylene and an α-olefin such as propylene and butene (hereinafter, these are simply referred to as olefin).
(B) A copolymer selected from two or more olefins.
(C) a copolymer comprising an olefin component and another monomer component, and the olefin unit component ratio is 30% by weight or more, preferably 50% by weight or more, more preferably 70% by weight or more, and still more preferably 80%. Copolymers of greater than or equal to weight percent, most preferably greater than or equal to 90 weight percent.
(D) A mixture of two or more selected from the group (a), (b) and (c) above.
(E) One or more selected from the group (a), (b), (c) and (d) above, and (a), (b), (c) or (d) above Is a mixed resin composition with other different synthetic resin components or / and other synthetic elastomer components, wherein the olefin component unit ratio in the composition is 30% by weight or more, preferably 50% by weight or more, more preferably A mixed resin composition of 70% by weight or more, more preferably 80% by weight or more, and most preferably 90% by weight or more.

  In particular, as the base resin for the box body and the lid, among the above-mentioned polyolefin resins, polypropylene resins are preferable. Polypropylene resins are preferable because they are excellent in strength and can realize the same strength at a lower weight than those made of, for example, polyethylene resins.

The said polypropylene resin said in this invention corresponds to either of following (f)-(i).
(F) A propylene homopolymer.
(G) A copolymer comprising a propylene component and another monomer component, and the proportion of the propylene unit component is 30% by weight or more, preferably 50% by weight or more, more preferably 70% by weight or more, and still more preferably 80%. Copolymers of greater than or equal to weight percent, most preferably greater than or equal to 90 weight percent.
(H) A mixture of two or more selected from the group of (f) and (g) above.
(I) One or more selected from the group of (f), (g) and (h) above, and another synthetic resin component different from the above (f), (g) or (h) or / And other synthetic elastomer component mixed resin composition, propylene component unit ratio in the composition is 30 wt% or more, preferably 50 wt% or more, more preferably 70 wt% or more, still more preferably 80% by weight or more, most preferably 90% by weight or more of a mixed resin composition.

  On the other hand, as the base resin for the glass substrate contact portion, the glass substrate contact partitioning portion, and the buffer portion, polyethylene resin is particularly preferable among those made of the polyolefin resin. Polyolefin resins have an excellent balance between strength and flexibility, and have the characteristics that dust does not easily occur when friction occurs with a glass substrate. Among them, polyethylene resins particularly protect glass substrates. It is excellent in properties and is suitable as a base resin for a contact portion with a glass substrate.

The said polyethylene-type resin said in this invention corresponds to either of following (j)-(m).
(J) A homopolymer of ethylene.
(K) A copolymer comprising an ethylene component and another monomer component, and the ethylene unit component ratio is 30% by weight or more, preferably 50% by weight or more, more preferably 70% by weight or more, and further preferably 80% by weight. % Or more, most preferably 90% by weight or more of a copolymer.
(L) A mixture of two or more selected from the group (j) and (k) above.
(M) One or more selected from the group (j), (k) and (l) above, and other synthetic resin components different from the above (j), (k) or (l) or / And a mixed resin composition with other synthetic elastomer components, wherein the ethylene component unit ratio in the composition is 30% by weight or more, preferably 50% by weight or more, more preferably 70% by weight or more, still more preferably 80% by weight or more, most preferably 90% by weight or more of a mixed resin composition.

Further, the apparent density (A) when the glass substrate contact portion, the glass substrate contact partition portion and the buffer portion are formed of polyolefin resin is 10 to 90 kg / m ³ , preferably 10 to 45 kg / m. ³ , more preferably 15 kg / m ³ or more and less than 45 kg / m ³ . This is because if the apparent density of the glass substrate contact part, the glass substrate contact partition part and the buffer part is too large, the cushioning property is insufficient, so the glass substrate is damaged due to vibration or impact during transportation or handling. There is a risk of doing. On the other hand, if the apparent density is too small, the cushioning property is sufficient, but the deformation when subjected to a load becomes too large, the glass substrate is not stable during transportation, and the glass substrate may be damaged or damaged. . Note that the base resin and the apparent density of the glass substrate contact portion, the glass substrate contact partitioning portion, and the buffer portion are not necessarily the same.

  The apparent density of the glass substrate abutting portion, glass substrate abutting partition portion, and buffer portion is as follows. It is calculated by dividing by the volume of. When the glass substrate contact part, the glass substrate contact partition part and the buffer part can be removed from the box body part, each of the glass substrate contact part, glass substrate contact partition part and buffer part removed from the box body part. It is the value obtained as a whole test piece. On the other hand, when the glass substrate contact part, the glass substrate contact partition part and the buffer part are bonded to the box body part by adhesion, adhesion or fusion, and these cannot be removed, the box body is connected to the box body part. The glass substrate contact part, the glass substrate contact partition part, and the buffer part are divided into glass substrate contact values, the glass substrate contact part, the glass substrate contact partition part, and the buffer part. The apparent density of the contact part, the glass substrate contact partition part, and the buffer part is used.

The apparent density of the box body and the lid is preferably 20 to 300 kg / m ³ , and the apparent density (B) when formed of a polyolefin resin is 45 to 300 kg / m ³ [however, this apparent density The density (B) is not less than the above apparent density (A), preferably the apparent density (B) exceeds the apparent density (A). ], Preferably 45 to 120 kg / m ³ [however, this apparent density (B) is not less than the above apparent density (A), preferably the apparent density (B) exceeds the apparent density (A). ] Is more preferable. If the apparent density of the box body and lid is too small, the strength tends to be insufficient, and it will be necessary to increase the plate thickness to make up for it, resulting in an unnecessarily large box. There is a fear. Further, if the apparent density is too small, the box itself is easily deformed, and there is a possibility of damaging the glass substrate housed inside. On the other hand, when the apparent density is too high, the flexibility is lost and the glass substrate cannot be sufficiently protected or the lightness is hindered.
Further, when the box main body and the lid are formed of a polyolefin-based resin, when the apparent density (B) is less than the apparent density (A), the box is more than the abutting portion when receiving a load. Since the deformation of the main body is increased, the glass substrate may be damaged. The base body resin and the apparent density of the box body and the lid are not necessarily the same.

  The apparent density of the box main body and the lid is determined by the same method as that for the glass substrate contact portion described above, except that the box main body and the lid are used as the test pieces. In addition, when the glass substrate contact part, the glass substrate contact partitioning part, and the buffer part can be detached from the box body part, after removing them, the value is obtained for the entire box body part as a test piece. On the other hand, when the glass substrate contact part, the glass substrate contact partition part and the buffer part are bonded to the box body part by adhesion, adhesion or fusion, and these cannot be removed, the box body is connected to the box body part. The value obtained by dividing the glass substrate contact portion, the glass substrate contact partition portion, and the buffer portion into the test piece as the entire box body portion is defined as the apparent density of the box body portion.

  The thermoplastic resin foam forming the box body and lid is preferably filled with foamed particles obtained by foaming a polyolefin-based resin into beads, heated to a predetermined temperature, and then cooled. Is produced by a so-called in-mold foam molding method. Since this in-mold foam molding method does not require high mold strength compared to the injection foam molding method, a low-cost mold such as an aluminum mold can be used as the mold, and the box body portion can be manufactured at low cost. A lid or the like can be molded.

In addition, a necessary amount of various additives such as an antistatic agent, a bubble regulator, a flame retardant, a flame retardant aid, and an inorganic filler may be added to the base resin of the thermoplastic resin foam as necessary. Can do.
In particular, when the glass substrate transport box according to the present invention accommodates a TFT (thin film transistor) -formed glass substrate or a completed panel of a liquid crystal cell, at least a portion in contact with or possibly in contact with the substrate (preferably Is the foaming of polyolefin resin with volume resistivity of 1 × 10 ³ to 1 × 10 ¹³ Ω · cm by foaming polyolefin resin containing conductive material or antistatic material. The body is desirable. As a result, necessary conductivity and antistatic properties can be obtained.

  Next, the packaging body for transporting a glass substrate according to the present invention is a glass substrate in which a plurality of glass substrates are stacked horizontally in the thickness direction in the above-described box for transporting a glass substrate according to the present invention. It is a transport packaging body, and a resin sheet having specific physical properties is interposed between the laminated glass substrates.

  The base resin of the resin sheet is preferably a polyolefin resin, and the polyolefin resin is the same as the polyolefin resin. Polyolefin resin is excellent in the balance between its surface hardness and flexural modulus, and is less likely to generate dust caused by friction with the glass substrate. Therefore, it is suitable as a base resin for the resin sheet protecting the glass substrate in the present invention. It is.

An apparent density when the resin sheet is formed of a polyolefin-based resin is 60 to 300 kg / m ³ , preferably 90 to 300 kg / m ³ , and more preferably 150 to 300 kg / m ³ . When the apparent density of the resin sheet is too large, the cushioning function originally possessed by the foam cannot be sufficiently exhibited, and there is a possibility that the protection of the glass substrate surface may be hindered. On the other hand, if it is too small, the stiffness of the resin sheet necessary for the operation of accommodating the glass substrate (for example, the strength to resist deformation when the resin sheet is lifted by a robot arm, a vacuum means, etc. when automatic packaging is performed) ) Is insufficient, and workability is reduced. Further, if the thickness of the resin sheet is increased in order to ensure the stiffness required for the work, the accommodation efficiency of the glass substrate is lowered.
The apparent density of the resin sheet of the present invention can be determined by cutting out a measurement piece from the resin sheet and dividing the weight of the measurement piece by the volume determined from the outer dimensions of the measurement piece.

Moreover, the thickness of the said resin sheet is 0.3-5 mm, Preferably it is 0.5-3 mm, More preferably, it is 0.5-2 mm. If the thickness of the resin sheet is too thin, the foam does not sufficiently exhibit the buffering function inherently possessed, and there is a possibility that the protection against the glass substrate may be hindered, and the stiffness is reduced. The workability of the glass substrate packing operation is reduced. On the other hand, when the thickness of the resin sheet is too thick, the accommodation efficiency of the glass substrate is lowered.
In addition, the thickness of the resin sheet in this invention measures the thickness of ten places at equal intervals over the full width of the short side direction of a resin sheet, and says the arithmetic average of each calculated | required measured value.

Further, the surface resistivity of the resin sheet is less than 5.0 × 10 ¹³ Ω, preferably 1.0 × 10 ⁸ Ω or more and less than 5.0 × 10 ¹³ Ω. If the surface resistivity is within the above range, sufficient antistatic performance can be exerted, and it is possible to prevent the resin sheet from adhering dust and dirt that cause damage to the glass substrate surface. Further, a glass substrate on which TFT (thin film transistor) is formed, a completed panel of a liquid crystal cell, or a glass substrate having a protective film laminated on the surface thereof may be damaged by static electricity generated by friction with a packaging for transportation. Therefore, it is necessary to use a resin sheet having a particularly low surface resistivity. The lower limit of the surface resistivity is not particularly limited, but is about 1.0 × 10 ⁵ Ω.

  In order to achieve a resin sheet having a low surface resistivity as described above, a resin sheet is formed by foaming a thermoplastic resin that is adjusted to have the above-mentioned surface resistivity by containing a conductive substance or an antistatic substance. A method of laminating a film having the above surface resistivity on the surface of a resin sheet, co-extrusion of a thermoplastic resin adjusted to have the above surface resistivity by containing a conductive substance or an antistatic substance There is a method of laminating on the surface of a resin sheet. When laminating a resin layer having the surface resistivity on the surface, the resin sheet to be laminated may not necessarily contain a conductive substance or an antistatic substance as long as the surface resistivity can be achieved. The antistatic layer does not necessarily need to be on the surface of the resin sheet, and a resin layer that does not contain a conductive substance or an antistatic substance may exist on the surface. In addition, when the resin sheet is a laminate, the apparent density and thickness of the resin sheet refer to the apparent density and thickness of the entire laminate.

The antistatic substance is preferably a polymer antistatic agent, and the polymer antistatic agent is made of a resin having a surface resistivity of 1 × 10 ¹¹ Ω or less. Specifically, an ionomer resin containing an alkali metal selected from the group consisting of potassium, rubidium and cesium as a metal ion, and a hydrophilic resin mainly composed of polyetheresteramide or polyether. In addition, when using a polyolefin-based resin as the base resin of the resin sheet, the polymer type antistatic agent improves the compatibility with the polyolefin-based resin constituting the foam and gives an excellent antistatic effect, In order to obtain an effect of suppressing deterioration in physical properties due to the addition of an antistatic agent, it is more preferable to use a block copolymer of the same type of polyolefin resin as the polyolefin resin.

Particularly preferred polymer type antistatic agents are ionomers in which part or all of the ethylene-unsaturated carboxylic acid copolymer is neutralized with an alkali metal selected from the group consisting of potassium, rubidium and cesium, and The composition described in -278985 is mentioned. The composition described in JP-A No. 2001-278985 includes a block of polyolefin (a) and a block of hydrophilic resin (b) having a volume resistivity of 1 × 10 ⁵ to 1 × 10 ¹¹ Ω · cm, It is a block polymer (A) having a number average molecular weight (Mn) of 2000 to 60000 having a structure in which repetitive bonding is repeated. The block (a) and the block (b) have a structure in which they are alternately and repeatedly bonded via at least one bond selected from an ester bond, an amide bond, an ether bond, a urethane bond, and an imide bond. is there.

  The measurement of the surface resistivity in the present specification is basically performed according to JIS K 6271 (2001). Specifically, a test piece (length 100 mm × width 100 mm × thickness: test piece thickness) cut out from a resin sheet was used as a sample, and the test piece was left in an atmosphere of 23 ° C. and 50% humidity for 24 hours. The surface resistance value 1 minute after application at an applied voltage of 500 V is measured, and the surface resistivity is determined from the average value of the obtained measurement values. As a measuring device, “TR8601” manufactured by Takeda Riken Kogyo Co., Ltd. can be used.

  Moreover, the bending elastic modulus of the said resin sheet is 80-800 MPa, Preferably it is 80-500 MPa, More preferably, it is 100-500 MPa. When the bending elastic modulus of the resin sheet is too low, it is necessary to increase the thickness of the resin sheet in order to obtain the stiffness required for the operation, and the accommodation efficiency of the glass substrate is reduced. On the other hand, when the flexural modulus is too high, the cushioning function originally possessed by the foam cannot be sufficiently exhibited, and there is a possibility that the protection of the glass substrate may be hindered.

In order to achieve the bending elastic modulus, it is preferable to use a base resin containing 30 to 100% by weight of a polyolefin resin having a density of 890 to 970 kg / m ³ . Among the polyolefin-based resins, it is more preferable to use a polypropylene-based resin from the balance between buffer properties and rigidity.

  The bending elastic modulus is measured in the extrusion direction (MD) and the width direction (TD) of the resin sheet based on JIS K 7221-2 (1999). As a test piece, a length of 150 mm × width of 25 mm × thickness: a resin sheet having a thickness cut out from the resin sheet, R = 5 (mm) at the fulcrum tip, R = 5 (mm) at the indenter tip, Measurement is performed under the conditions of a fulcrum distance of 100 mm and a bending speed of 10 mm / min. In addition, 10 test pieces are measured for each of the extrusion direction and the width direction of the resin sheet, the respective average values are obtained, and the smaller value of the average values is defined as the bending elastic modulus of the present invention. However, when the bending elastic modulus is different between the front surface and the back surface of the resin sheet, the larger value obtained by the above method is set as the bending elastic modulus of the present invention.

  The package for transporting a glass substrate according to the present invention has a plurality of glass substrates laminated in the thickness direction in a box body having an open top surface with the resin sheet having the above physical properties interposed between the glass substrates. The box body and lid are separated by a binding member such as a binding band or a PP band with a hook-and-loop fastener if necessary after the upper surface opening of the box body is closed with a lid. Can be prevented. When transporting far away (for example, exporting), the entire transport box according to the present invention containing a glass substrate is wrapped with a moisture-proof packaging material such as a polyolefin film or an aluminum laminate film, or the whole is taped. It can be hung. Furthermore, when packing the glass substrate, a hygroscopic agent such as silica gel can be placed inside the box.

  Examples of the glass substrate transport box and the glass substrate transport package according to the present invention will be described below in detail with reference to the drawings.

  FIGS. 1-9 is the figure which showed the box for glass substrate conveyance of this invention. Moreover, FIGS. 10-20 is the figure which showed the main-body part of the box for glass substrate conveyance of this invention. FIGS. 21 to 25 are views showing various arrangement examples of the glass substrate contact member, the glass substrate contact partition member, and the buffer member to the box body. Furthermore, FIGS. 26-34 is the figure which showed the cover body of the box for glass substrate conveyance of this invention.

As shown in FIG. 21 and the like, the glass substrate carrying box 1 according to the present invention includes a box body 10, a glass substrate abutting member 30 (30a, 30b, etc.) provided in the box body 10, glass The box body 2 includes a substrate contact partition member 40 (40a, 40b, etc.) and a buffer member 50, and a lid body 60 that closes the upper surface opening of the box body 2. The box body 10 and the lid 60 are manufactured by a molding method in which polypropylene resin foam particles are filled in a mold, heated to a predetermined temperature, and then cooled, a so-called in-mold foam molding method. The apparent density of the foam is 67 kg / m ³ for both the box body 10 and the lid 60. Further, the glass substrate contact member 30 (30a, 30b, etc.), the glass contact partition member 40 (40a, 40b, etc.) and the buffer member 50 are apparent densities formed by in-mold foam molding of polyethylene resin foam particles. Is made of a foam of 31 kg / m ³ .

  As shown in FIGS. 10 to 20, the box main body portion 10 includes a rectangular bottom plate portion 11 and side wall portions 12 that rise vertically from the periphery of the bottom plate portion 11. The short side dimension L1 of the bottom plate part 11 is 773 mm, and the long side dimension L2 is 1377 mm. The height H1 of the side wall portion 12 rising from the peripheral edge of the bottom plate portion 11 is 52 mm. Therefore, the ratio of the short side dimension L1 of the bottom plate part 11 to the long side dimension L2 is 1: 1.78, and the height H1 of the side wall part 12 is 1/14 of the short side dimension L1 of the bottom plate part 11. .9. Moreover, since the plate | board thickness of the baseplate part 11 is 52 mm and the plate | board thickness of the side wall part 12 is 55 mm, the external dimensions of this box main-body part 10 are width 883mm, length 1487mm, and height 104mm. The glass substrate is horizontally accommodated in the space formed by the bottom plate portion 11 and the side wall portion 12 in a state of being laminated in the plate thickness direction.

On the inner surface side of the side wall portion 12 of the box body portion 10, dovetail grooves 13 that are engaging means for locking the glass substrate abutting member 30 (30a, 30b, etc.) and / or the buffer member 50, and glass A concave groove 14 (14a, 14b, etc.) is provided as an engaging means for locking the substrate contact partition member 40 (40a, 40b, etc.).
The dovetail groove 13 has an inlet width of 50 mm, a bottom width of 60 mm, and a groove depth of 15 mm, and is formed from the upper end of the side wall 12 to a depth of 52 mm in the vertical direction. As shown in FIG. 18, the dovetail groove 13 is formed at positions 130 mm (point B) in each of the left and right directions along the side wall from the center (point A) that bisects the longitudinal dimension of the side wall portion 12a on the long side. .5 mm (point D), 485.5 mm (point E) are formed so that the center of the dovetail groove 13 is located on the inner surface side at six positions separated from each other, and the inner surface side of the side wall portion 12a on the long side facing each other Also, dovetail grooves 13 are formed at positions facing each other. Further, the side wall 12b on the short side is also 4 mm apart from the center (point a) that bisects the longitudinal dimension of the side wall 12b in the left and right directions along the side wall by 100 mm (point b) and 300 mm (point c), respectively. The dovetail grooves 13 are formed so that the centers of the dovetail grooves 13 are respectively located on the inner surface side of the positions, and the dovetail grooves 13 are also formed at positions facing the inner surface side of the opposite side wall portion 12b.

  On the other hand, the groove 14 has a groove width 14 of 158 mm and a groove depth of 15 mm, a groove groove 14 b of 45 mm and a groove depth of 15 mm, a groove width of 30 mm and a groove depth of 15 mm. Three types of concave grooves 14c are formed from the upper end of the side wall portion 12 to a depth of 62 mm in the vertical direction. As shown in FIG. 18, the concave grooves 14a are formed on the inner surface side of the center (point A) that bisects the longitudinal dimension of the side wall portion 12a on the long side. A concave groove 14a is formed at a position that is formed so that the center is positioned and that also faces the inner surface side of the opposite side wall 12a. And the recessed part 15a whose width | variety is 158 mm and depth is 10 mm is formed in the surface of the baseplate part 11 so that the opposing groove 14a may be connected. Further, the concave groove 14b has a length of 233.5 mm (point C), 553 mm (point F), and 621 mm in the left and right directions along the side wall from the center (point A) that bisects the longitudinal dimension of the side wall portion 12a on the long side. G point) The groove 14b is formed so that the center of the groove 14b is located on the inner surface side at six positions separated from each other, and the groove 14b is located at a position facing the inner surface side of the opposite side wall portion 12a. Is formed. And the recessed part 15b whose width | variety is 45 mm and depth is 10 mm is formed in the surface of the baseplate part 11 so that these opposing concave grooves 14b may be connected. The concave groove 14c is formed so that the center of the concave groove 14c is located on the inner surface side of the center (point a) that bisects the longitudinal dimension of the side wall portion 12b on the short side, and the side wall on the short side that faces the concave groove 14c. A concave groove 14c is formed at a position facing the inner surface side of the portion 12b. A concave portion 15c having a width of 30 mm and a depth of 10 mm is formed on the surface of the bottom plate portion 11 so as to connect the opposing concave grooves 14c.

  As shown in FIG. 19, a notch step portion 16 for fitting the lid 60 is formed on the outer peripheral surface of the side wall portion 12 of the box body portion 10. Are formed with a concave portion 17 into which a convex portion 63 formed in the lid body 60 is fitted, and a concave portion 18 into which a finger or the like is inserted when the lid body 60 is removed. Further, a convex portion 19 having a height of about 5 mm that fits into a concave portion 70 formed in the lid body 60 is formed intermittently on the upper end of the side wall portion 12. Furthermore, five grooves 20 for hanging the binding band are formed on the outer surface side of the both side walls 12a on the long side with an appropriate interval.

  Further, as shown in FIG. 20, the back surface of the bottom plate portion 11 of the box body portion 10 is slightly (about 8 mm) at a position corresponding to each of the recesses 15a, 15b, 15c formed on the surface of the bottom plate portion 11. ) Recesses 21a, 21b, and 21c that are wider than the corresponding recesses and have a depth of 13 mm are formed. And the convex part 22 of height 8mm which reinforces the baseplate part 11 is formed in the wide recessed part 21a of the center. Further, four notches 23 into which lifter forks are inserted are formed on the back surface of the bottom plate portion 11. Further, a notch step 24 having a depth of 4 mm is formed on the rear peripheral edge of the bottom plate 11 to engage with the annular convex portion 68 formed on the upper peripheral edge of the lid 60. By engaging the annular convex portion 68 and the notch step portion 24, the boxes 1 can be stacked without shifting when they are stacked.

  The box body 10 described above includes a glass substrate contact member 30 (30a, 30b, etc.), a glass substrate contact partition member 40 (40a, 40b, etc.) and a buffer member 50 for enhancing the protection of the glass substrate to be stored. Are internally provided via the dovetail groove 13 and the concave groove 14 (14a, 14b, etc.) provided on the inner surface side of the side wall portion 12 of the box main body portion 10, respectively.

FIG. 21 shows the basic configuration of the glass substrate transport box 1 according to the present invention. The glass substrate has a 52-inch large glass with a short side dimension of 680 mm and a long side dimension of 1193 mm. This is an arrangement example of the glass substrate abutting member 30 (30a), the glass substrate abutting partition member 40 (40a), and the buffer member 50 to the box body 10 when the substrate α is accommodated.
As shown in the figure, a glass substrate abutting member 30a that abuts on the long side of the glass substrate α and a glass substrate abutment partition member 40a that abuts on the short side are respectively engaged with the box body 10 and are respectively contacted. The distance between the opposing inner surfaces of the contact member and the contact partition member is arranged to be 4 mm larger than the short side and long side dimensions of the glass substrate α. The glass substrate abutting member 30a that abuts on the long side of the glass substrate α is 130 mm in both the left and right directions from the center (point A) of each side wall 12a on the long side of the box body 10 along the side wall. B point) From 12 members having a width of 100 mm, which are respectively locked in 12 dovetail grooves 13 provided at positions separated by 355.5 mm (point D) and 485.5 mm (point E). Therefore, these contact members 30a are arranged so as not to contact the corners of the glass substrate α. On the other hand, the glass substrate contact partitioning member 40a that contacts the short side of the glass substrate α is 621 mm (point G) apart from the center (point A) of the side wall 12a on the long side in both the left and right directions along the side wall. Are respectively inserted between the concave grooves 15b formed on the surface of the bottom plate portion 11 so as to be engaged with each other between the concave grooves 14b provided at the positions and to connect the concave grooves 14b to each other. It consists of two members arrange | positioned so that between the side wall parts 12a to perform may be bridged, and these contact partition members 40a are arrange | positioned so that the corner | angular part of the glass substrate (alpha) may be contact | connected. And the buffer member 50 is provided between this glass substrate contact partition member 40a and the inner surface of the side wall part 12b by the side of the short side in which the said glass substrate contact member 30a is not provided. The buffer member 50 is provided at a total of four positions that are 300 mm (point c) apart in the left and right directions along the side wall from the center (point a) of each side wall 12b on the short side of the box body 10. Each of the buffer members 50 is locked to each of the dovetail grooves 13 and has a width of 100 mm. These buffer members 50 are located near both ends in the longitudinal direction of the glass substrate abutment partition member 40a (the corners of the box body). In the vicinity of the portion) so as to contact the side portion.

  FIG. 22 is a diagram in which only the arrangement position of the buffer member 50 is changed with respect to FIG. 21, and in this arrangement example, the buffer member 50 is provided on each of the side walls 12 b on the short side of the box body 10. Four members each having a width of 100 mm, which are respectively locked by a total of four dovetail grooves 13 provided at positions separated from the center (point a) by 100 mm (point b) in both the left and right directions along the side wall. These buffer members 50 are arranged so as to come into contact with the side portions in the vicinity of the center in the longitudinal direction of the glass substrate contact partition member 40a.

  The basic arrangement of the glass substrate contact member 30, the glass substrate contact partition member 40, and the buffer member 50 for enhancing the protection of the glass substrate of the glass substrate transport box 1 according to the present invention is as described above. In this embodiment, the glass substrate contact member 30 (30a, 30b, etc.), the glass substrate contact partition member 40 (40a, 40b, etc.) and the buffer member 50 are formed as separate members from the box main body portion 10, Further, since the dovetail groove 13 and the concave groove 14 (14a, 14b, etc.) which are the engaging means described above are formed in the box body portion 10, the glass substrate abutting member 30 and the glass according to the size of the glass substrate to be accommodated. By changing the shape, size, locking position, and the like of the substrate contact partition member 40 and the buffer member 50, it becomes possible to accommodate glass substrates of various sizes.

FIG. 23 shows a glass substrate abutting member 30 (30b) to the box main body 10 when a 46-inch glass substrate β having a glass substrate size of 603 mm in short side and 1057 mm in long side is accommodated. ) And the glass substrate abutment partition member 40 (40b).
As shown in the drawing, a glass substrate abutting member 30b that abuts on the long side of the glass substrate β and a glass substrate abutment partition member 40b that abuts on the short side are respectively engaged with the box body 10 and are respectively contacted. The distance between the opposing inner surfaces of the contact member and the contact partition member is arranged to be 4 mm larger than the short side and long side dimensions of the glass substrate β. The glass substrate abutting member 30b that abuts on the long side of the glass substrate β is 130 mm in both the left and right directions from the center (point A) of each side wall 12a on the long side of the box body 10 along the side wall. (B point) 355.5 mm (D point) It consists of eight members each having a width of 100 mm, which are respectively locked in a total of eight dovetail grooves 13 provided at positions separated from each other, and these contact members 30b Are arranged so as not to contact the corners of the glass substrate β. On the other hand, the glass substrate contact partitioning member 40b that contacts the short side of the glass substrate β is 563 mm (point F) in both the left and right directions along the side wall from the center (point A) of the side wall portion 12a on the long side. Are respectively inserted between the concave grooves 15b formed on the surface of the bottom plate portion 11 so as to be engaged with each other between the concave grooves 14b provided at the positions and to connect the concave grooves 14b to each other. It consists of two members arrange | positioned so that the side wall part 12a which bridges may be bridged, and these contact partition members 40b are arrange | positioned so that the corner | angular part of the glass substrate (beta) may be contact | connected.
When the 46-inch glass substrate β is accommodated, it is between the glass substrate contact partition member 40b and the inner surface of the short side wall portion 12b where the glass substrate contact member 30b is not provided. It is not always necessary to provide the buffer member 50 on the inner surface of the glass substrate abutment partition member 40b and the inner surface of the side wall portion 12b on the short side as in the case where the buffer member 50 accommodates the 52-inch large glass substrate α described above. You may provide between.

FIG. 24 shows a glass substrate abutting member 30 (30c) to the box main body 10 in the case of accommodating a 32-inch glass substrate γ having a short side dimension of 418 mm and a long side dimension of 720 mm. 30d) and the glass substrate abutment partition member 40 (40c).
As shown in the figure, the glass substrate abutment partition member 40c locked so as to bridge between the opposing side walls 12a on the long side, and the side walls 12a on the long side and the side walls 12b on the short side are respectively engaged. The stopped glass substrate abutting members 30c and 30d are arranged so as to divide the accommodating portion into three equal parts, and the distance between the facing inner surfaces of the abutting member and the abutting partition member in these accommodating portions. However, they are arranged so as to be 4 mm larger than the short side dimension of the glass substrate γ and 8 mm larger than the long side dimension. The glass substrate abutment partition member 40c is provided with the above-described concave grooves provided at positions spaced 233.5 mm (point C) in both the left and right directions along the side wall from the center (point A) of the side wall portion 12a on the long side. 14b, respectively, and inserted into the concave portions 15b formed on the surface of the bottom plate portion 11 so as to connect the concave grooves 14b to bridge between the opposing side wall portions 12a on the long side. It consists of two arranged members. These abutment partition members 40c are provided with notches 41 at portions located at the corners of the glass substrate γ, and are not in contact with the corners of the glass substrate γ. Further, the glass substrate abutting member 30c is 130 mm (point B), 355.5 mm (point B) in both the left and right directions from the center (point A) of each side wall portion 12a on the long side of the box body portion 10 along the side wall. The abutting member 30c is composed of 12 members each having a width of 100 mm, which are respectively locked in 12 dovetail grooves 13 provided at positions separated by D point) and 485.5 mm (E point). Are arranged so as not to contact the corners of the glass substrate γ. Further, the glass substrate abutting member 30d has 100 mm (b point) and 300 mm (c point) in both the left and right directions along the side wall from the center (point a) of the both side walls 12b on the short side of the box body 10. ) Eight members having a width of 100 mm, which are respectively locked in a total of eight dovetail grooves 13 provided at separated positions, and these contact members 30d are provided at the corners of the glass substrate γ. It is arranged not to touch.

FIG. 25 shows a glass substrate abutting member 30 (30e) to the box body 10 in the case where a 26-inch glass substrate δ having a short side dimension of 345 mm and a long side dimension of 595 mm is accommodated. 30f) and the glass substrate abutment partition member 40 (40d).
As shown in the drawing, the glass substrate abutment partitioning member 40d locked so as to bridge between the side walls 12a on the long side facing each other and the side wall portions 12b on the short side facing each other and the long side side Glass substrate contact members 30e and 30f locked along the side wall portion 12a and the side wall portion 12b on the short side are arranged so as to divide the housing portion into four equal parts, and in these housing portions, respectively. The distance between the facing inner surfaces of the contact member and the contact partition member is set to be 4 mm larger than the dimensions of the short side and the long side of the glass substrate δ. The cross-shaped glass substrate abutting member 40d is locked between the opposed concave grooves 14a provided at the center (point A) of the side wall portion 12a on the long side of the box body portion 10, and the concave grooves 14a. It is inserted into the concave portion 15a formed on the surface of the bottom plate portion 11 so as to connect each other, and is arranged so as to bridge between the opposing side wall portions 12a on the long side, and on the short side of the box main body portion 10 Inserted into the concave portion 15c formed on the surface of the bottom plate portion 11 so as to be locked between the opposed concave grooves 14c provided at the center (point a) of the side wall portion 12b of the bottom plate portion 11 It is arranged so as to bridge between the side walls 12b facing each other on the short side. The abutment partition member 40d is provided with a notch 41 at a portion located at the corner of the glass substrate δ, and is not in contact with the corner of the glass substrate δ. Further, the glass substrate abutting member 30e is 130 mm (point B), 355.5 mm (point B) in both the left and right directions from the center (point A) of each side wall portion 12a on the long side of the box main body 10 along the side wall. The contact member 30e is composed of 12 members each having a width of 100 mm, which are respectively latched by a total of 12 dovetail grooves 13 provided at positions separated by D point) and 485.5 mm (E point). Are arranged so as not to contact the corners of the glass substrate δ. Further, the glass substrate abutting member 30f is respectively 100 mm (b point) and 300 mm (c point) in both the left and right directions from the center (point a) of the both side walls 12b on the short side of the box main body 10 along the side wall. ) Eight members having a width of 100 mm, which are respectively engaged with the eight dovetail grooves 13 provided in the separated positions, and these contact members 30f are in contact with the corners of the glass substrate δ. Arranged not to.

  The glass substrate abutting member 30 (30a, 30b, etc.) and the buffer member 50 arranged in the box body 10 are designed to be flush with the upper end of the side wall 12 of the box body 10 in the arrangement state. ing. On the other hand, the glass substrate abutment partition member 40 (40a, 40b, etc.) arranged so as to bridge between the opposing side wall parts 12 of the box body 10 is arranged from the upper end of the side wall part 12 of the box body part 10 in the arrangement state. Designed to protrude 10 mm.

  The box body 2 in which the glass substrate abutting member 30 (30a, 30b, etc.), the glass substrate abutting partition member 40 (40a, 40b, etc.) and the buffer member 50 are arranged is provided in the box before the glass substrate is stored. In the state where only the main body 2 is laminated, the glass substrate is placed in the vicinity of an automatic packing device or the like, but the recesses 21a, 21b, and 21c are formed on the back surface of the bottom plate portion 11 of the box main body portion 10 as described above. Therefore, the upper portion of the glass substrate abutment partition member 40 (40a, 40b, etc.) protruding from the upper end of the side wall portion 12 of the lower box main body portion 10 is fitted in the concave portion. Only the box body 2 can be laminated.

  On the other hand, as shown in FIGS. 26 to 34, the lid body 60 includes a rectangular top plate portion 61 and an annular convex portion 62 that protrudes downward from the peripheral edge of the top plate portion 61. The convex part 62 fits into the notch step part 16 formed in the outer peripheral surface of the side wall part 12 of the box main body part 10. Further, four convex portions 63 are formed at the lower end of the annular convex portion 62, and the convex portions 63 are fitted into the concave portions 17 formed in the notch step portion 16 of the box main body portion 10. By fitting the convex portion 63 into the concave portion 17, it is possible to effectively prevent the main body portion 10 and the lid body 60 from being displaced due to vibration or the like during handling or conveyance.

  On the surface of the top plate portion 61 of the lid 60, as shown in FIG. 33, five grooves 64 for hanging the binding band are formed at appropriate intervals from both side surfaces on the long side to the top surface. . In addition, four notches 65 for inserting lifter forks are formed on the top surface of the top plate 61, and when the boxes 1 are stacked in the center direction from the notches 65, the upper box body A convex portion 66 having a height of 3 mm for supporting the bottom plate portion 11 of the portion 10 is formed. Further, the convex portion 63 of the upper lid when only the lid 60 is laminated on the upper surface of the top plate portion 61 at a position corresponding to the four convex portions 63 formed at the lower end of the annular convex portion 62. A notch recess 67 into which is inserted is formed. Further, an annular convex portion having a height of 7 mm that engages with the notched step portion 23 having a depth of 4 mm formed on the peripheral surface of the back surface of the bottom plate portion 11 of the box main body portion 10 is provided on the peripheral edge portion of the top plate portion 61. 68 is formed.

  Further, as shown in FIG. 34, the back surface of the top plate portion 61 of the lid 60 has positions corresponding to the recesses 15 a, 15 b, and 15 c formed on the surface of the bottom plate portion 11 of the box body portion 10. The recesses 69a, 69b, 69c that are slightly wider (about 4 mm) wider than the corresponding recesses and have a depth of 10 mm are formed in the recesses 69a, 69b, 69c, respectively. 40b or the like) is inserted, and the lid 60 is also configured to support the glass substrate abutment partition member 40 (40a, 40b, etc.). By supporting the glass substrate abutment partition member 40 by the recesses 69, the displacement of the abutment partition member 40 from the main body 10 and the deformation of the abutment partition member 40 are more effective due to vibrations during handling or conveyance. Can be prevented. Moreover, the recessed part 70 into which the convex part 19 formed intermittently in the upper end of the side wall part 12 of the said box main-body part 10 fits in the back surface peripheral part of the top-plate part 61 is formed intermittently. By fitting the convex portion 19 into the concave portion 70, it is possible to more effectively prevent the main body portion 10 and the lid body 60 from being displaced due to vibration during handling or conveyance.

  The packaging body for transporting a glass substrate according to the present invention includes a box body 2 including the box body 10 described above, a glass substrate abutting member 30, a glass substrate abutting partition member 40, and a buffer member 50, and a lid 60. A glass substrate transport box 1 comprising a plurality of glass substrates stacked horizontally in a plate thickness direction in a glass substrate transport box 1, wherein the stacked glass substrates In addition, a resin sheet 80 having specific physical properties is interposed.

FIG. 35 shows a glass substrate abutting member 30 and a glass substrate abutting on the box body 10 when the large glass substrate α of FIG. 21 showing the basic configuration of the glass substrate transport box 1 according to the present invention is accommodated. It is the figure which showed the packaging form using the box main body 2 which performed arrangement | positioning of the partition member 40 and the buffer member 50. FIG.
The glass substrate α to be stored is a completed panel of a liquid crystal cell having a short side dimension of 680 mm, a long side dimension of 1193 mm, and a thickness of 1.4 mm. The resin sheet 80 is a polypropylene resin foam sheet having an apparent density of 225 kg / m ³ , a thickness of 1 mm, a surface resistivity of 2.1 × 10 ¹² Ω, and a flexural modulus of 240 MPa. The dimension and the dimension of the long side are the same as the dimension of the short side and the dimension of the long side of the glass substrate α.
As shown in FIG. 35, the packaging body for transporting a glass substrate according to the present invention has a box body 2 in which a glass substrate abutment member 30, a glass substrate abutment partition member 40 and a buffer member 50 are arranged in the box body portion 10. The glass substrate α and the foamed sheet 80 are accommodated by alternately stacking them in the plate thickness direction in parallel with the bottom plate portion 11, and the opening of the box body 2 is closed by the lid 60.

  FIG. 36 is a view showing the appearance of the packaging body for transporting a glass substrate according to the present invention, in which the box body 2 and the lid body 60 are firmly bound by a binding band 90, and the lid body 60 is in the middle of transportation or the like. This prevents the box body 2 from coming off. Although not shown in the drawings, the entire transport box 1 can be wrapped with a moisture-proof packaging material such as a polyolefin film or an aluminum laminate film when transporting away (for example, exporting).

  As mentioned above, although the Example of the box for glass substrate conveyance which concerns on this invention and the packaging body for glass substrate conveyance was described, this invention is not limited to the above-mentioned Example at all, and this invention described in the claim It goes without saying that various modifications and changes are possible within the scope of the technical idea.

It is a front view of the box for glass substrate conveyance concerning the present invention. It is a right view of the box for glass substrate conveyance which concerns on this invention. It is a left view of the box for glass substrate conveyance concerning the present invention. It is a top view of the box for glass substrate conveyance concerning the present invention. It is a bottom view of the box for glass substrate conveyance concerning the present invention. It is sectional drawing of the part in alignment with the AA of FIG. 4 which abbreviate | omitted the glass substrate contact member arrange | positioned in a box main-body part, a glass substrate contact partition member, and a buffer member. It is sectional drawing of the part in alignment with the BB line of FIG. 4 which abbreviate | omitted the glass substrate contact member arrange | positioned in a box main-body part, a glass substrate contact partition member, and a buffer member. It is an upper side perspective view of the box for glass substrate conveyance concerning the present invention. It is a lower side perspective view of the box for glass substrate conveyance concerning the present invention. It is a front view of the main-body part of the box for glass substrate conveyance which concerns on this invention. It is a right view of the main-body part of the box for glass substrate conveyance which concerns on this invention. It is a left view of the main-body part of the box for glass substrate conveyance which concerns on this invention. It is a top view of the main-body part of the box for glass substrate conveyance which concerns on this invention. It is a bottom view of the main-body part of the box for glass substrate conveyance which concerns on this invention. It is sectional drawing of the part which follows the CC line of FIG. It is sectional drawing of the part which follows the DD line | wire of FIG. It is an end view of the part which follows the GG line of FIG. It is an enlarged plan view of the main-body part of the box for glass substrate conveyance which concerns on this invention. It is an expansion upper side perspective view of the main-body part of the box for glass substrate conveyance which concerns on this invention. It is an expansion lower side perspective view of the main-body part of the box for glass substrate conveyance which concerns on this invention. It is the enlarged plan view which showed the example of arrangement | positioning of the glass substrate contact member to the main-body part of the glass substrate conveyance box which concerns on this invention, a glass substrate contact partition member, and a buffer member. It is the enlarged plan view which showed the other example of arrangement | positioning of the glass substrate contact member to the main-body part of the glass substrate conveyance box which concerns on this invention, a glass substrate contact partition member, and a buffer member. It is the enlarged plan view which showed the reference arrangement example of the glass substrate contact member to the main-body part of the glass substrate conveyance box which concerns on this invention, and a glass substrate contact partition member. It is the enlarged plan view which showed the other reference arrangement example of the glass substrate contact member to the main-body part of the glass substrate conveyance box which concerns on this invention, and a glass substrate contact partition member. It is the enlarged plan view which showed the further another reference arrangement example of the glass substrate contact member to the main-body part of the glass substrate conveyance box which concerns on this invention, and a glass substrate contact partition member. It is a front view of the lid of the box for glass substrate conveyance concerning the present invention. It is a right view of the cover body of the box for glass substrate conveyance which concerns on this invention. It is a left view of the cover body of the glass substrate conveyance box which concerns on this invention. It is a top view of the lid of the box for glass substrate conveyance concerning the present invention. It is a bottom view of the lid of the glass substrate transport box according to the present invention. It is sectional drawing of the part which follows the EE line | wire of FIG. It is sectional drawing of the part which follows the FF line | wire of FIG. It is an expansion upper side perspective view of the lid of the box for glass substrate conveyance concerning the present invention. It is an expansion lower perspective view of the lid of the box for glass substrate conveyance concerning the present invention. It is a notional disassembled perspective view showing a packaging form of the glass substrate carrying package according to the present invention. It is the perspective view which showed the external appearance of the package for glass substrate conveyance which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Glass substrate conveyance box 2 Box main body 10 Box main body part 11 Bottom plate part 12 Side wall part 12a Side wall part on the long side 12b Side wall part on the short side 13 Dovetail groove 14, 14a-14c Recessed groove 15a-15c Recessed part 16 Notch Step part 17 Concave part 18 Concave part 19 Convex part 20 Groove 21a-21c Concave part 22 Convex part 23 Notch 24 Notch step part 30, 30a-30f Glass substrate contact member 40, 40a-40d Glass substrate contact partition member 41 Notch Part 50 Buffer member 60 Lid 61 Top plate part 62 Annular convex part 63 Convex part 64 Groove 65 Notch 66 Convex part 67 Notch concave part 68 Annular convex part 69a-69c Concave part 70 Concave part 80 Resin sheet 90 Binding band

Claims (9)

  A box main body made of a thermoplastic resin foam having an open upper surface for horizontally accommodating a plurality of glass substrates laminated in the plate thickness direction, and a thermoplastic resin foam for closing the upper surface opening of the box main body. A box for transporting a glass substrate, wherein the box body includes a box body portion, a glass substrate contact portion, a glass substrate contact partition portion, and a buffer portion provided in the box body portion. The box body portion is composed of a rectangular bottom plate portion and a side wall portion rising from a peripheral edge of the bottom plate portion, and the glass substrate abutting portions are two pairs of side wall portions facing the box body portion. Are provided on the inner surface of one of the side walls, and the glass substrate abutment partition is parallel to the other opposing side wall where the glass substrate abutment is not provided. As described above, a pair is provided in a state of bridging the inner surfaces of the side wall portions of the box body portion provided with the glass substrate contact portion, and the glass substrate contact partition portion and the glass substrate contact portion are provided. The buffer portion is provided between the inner surface of the other side wall portion and the at least one surface of the two surfaces constituting the corner portion of the glass substrate to be stored is at least in the vicinity of the four corners of the box body. The glass substrate transport box, wherein the glass substrate contact portion and the glass substrate contact partition portion are provided so as not to contact the glass substrate contact portion or the glass substrate contact partition portion.   The said buffer part is provided in the four corner vicinity of a box main body, The box for glass substrate conveyance of Claim 1 characterized by the above-mentioned.   The bottom plate part of the box body part has a rectangular shape in which the ratio of the short side dimension to the long side dimension is 1: 1.3 to 1: 2, and the height of the side wall part of the box body part is The box for carrying a glass substrate according to claim 1 or 2, wherein the box is one third or less of the short side dimension of the bottom plate portion of the box body.   The said glass substrate contact partition part is provided so that it may become parallel with respect to the side wall part by the side of the short side which opposes, The box for glass substrate conveyance of Claim 3 characterized by the above-mentioned.   The said glass substrate contact part, a glass substrate contact partition part, and a buffer part are comprised from the separate member which can be attached or detached with respect to the said box main-body part, The any one of Claims 1-4 characterized by the above-mentioned. The box for glass substrate conveyance of description. The said glass substrate contact part, a glass substrate contact partition part, and a buffer part are polyolefin resin foams whose apparent density is 10-90 kg / m < ³ >, In any one of Claims 1-5 characterized by the above-mentioned. The box for glass substrate conveyance of description. The thermoplastic resin foam forming the box main body and the lid has an apparent density of 45 to 300 kg / m ³ (however, the apparent density of the box main body and the lid is the glass substrate contact portion, the glass substrate contact) The glass substrate transport according to any one of claims 1 to 6, wherein the glass substrate transport is an in-mold foam molded article of foamed particles using a polyolefin resin of a base resin as a partition resin and a buffer part having an apparent density or higher. For box. A glass substrate transport packaging body comprising a plurality of glass substrates stacked horizontally in the thickness direction in the glass substrate transport box according to any one of claims 1 to 7, Between the laminated glass substrates, the apparent density is 60 to 300 kg / m ³ , the thickness is 0.3 to 5 mm, the surface resistivity is less than 5.0 × 10 ¹³ Ω, and the flexural modulus is 80 to 800 MPa. A package for transporting a glass substrate, wherein a resin sheet is interposed.   The package for transporting a glass substrate according to claim 8, wherein the resin sheet is a polyolefin resin foam sheet.

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