JP4963385B2 - Transport container lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lid of a container for transportation, which is equipped with non-slip function and sealing function, and in which a non-slip part made of a flexible synthetic resin on the upper face side and an abutment part for sealing made of a flexible synthetic resin on the undersurface side are integrated up and down through a lid body made of a rigid synthetic resin, and there exists no possibility of separation of the non-slip part and the abutment part for sealing respectively from the lid body by interlaminar separation. <P>SOLUTION: The lid 3 is formed of a synthetic resin by two-color molding to freely open and close an upper opening part 2 of the container 1 for transportation. The lid 3 is constituted by providing a plurality of non-slip parts 5 on the peripheral part of the upper face part of a lid body 4 composed of the rigid synthetic resin, and by providing the abutment part 6 for sealing which has an annular shape at a part abutting on the peripheral part of the upper opening part 2 of the container 1 for transportation of the peripheral part of the undersurface part of the lid body 4. A plurality of the non-slip parts 5 provided on the upper face part of the lid body 4 and the abutment part 6 for sealing which has the annular shape provided at the lower surface of the lid body 4 are integrally formed of the flexible synthetic resin. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a technique for providing a slip prevention function and a sealing function in a lid of a transport container.

  Conventionally, when a plurality of transport containers are stacked in a state where the upper opening of the transport container can be freely opened and closed with a lid, a plurality of transport containers are stacked, for example, Patent Document 1 As shown in Fig. 2, it is common to prevent slippage when stacked in multiple upper and lower stages by fitting the upper surface portion of the lid and the lower surface portion of the upper transport container by uneven fitting. It is.

  However, in the above conventional example, unless the container is a transport container with the same size and the same unevenness, it cannot be slipped by uneven engagement when stacked up and down, and the size and type are different. If you try to place a container made of synthetic resin or a cardboard box, it will be uneven on the top surface of the lid in order to fit the concave and convex parts. There is a problem that containers and cardboard boxes cannot be stacked stably. In particular, when cardboard boxes are stacked, the lower surface of the cardboard box may be deformed by the unevenness provided on the upper surface of the lid.

  Moreover, when the separate packing is put in the inside of the curved part that opens downward on the outer periphery of the lid, and the upper opening of the transport container is closed with the lid, as in the conventional example shown in Patent Document 1 above. The packing put in the curved portion is pressed against the edge of the upper opening of the transport container, so that airtightness is secured when the upper opening of the transport container is closed by the lid.

However, in the conventional example in which a separate packing is inserted in the curved portion that opens downward on the outer periphery of the lid and the upper opening is closed with the lid, the lid and the separate member Packing is necessary, and there is a possibility that a separate packing may not be inserted accurately into the curved part, or a part of the separate packing may protrude from the curved part. When the upper opening of the transport container is closed with a lid, there is a possibility that the packing is not accurately pressed against the edge of the upper opening of the transport container, so that reliable airtightness cannot be secured. In addition, there is a possibility that the packing as a separate member from the lid may fall off from the inside of the curved portion and be lost.
Japanese Utility Model Publication No. 7-9726

  The present invention has been invented in view of the above-described conventional problems, and has an anti-slip function and a sealing function, and further, the anti-slip portion of the soft synthetic resin on the upper surface side and the sealing of the soft synthetic resin on the lower surface side. The abutment part is integrated vertically with a rigid synthetic resin lid body so that the anti-slip part and the sealing abutment part do not peel off from the lid body due to delamination. In addition, the lid of a transport container that does not require unevenness on the top surface of the lid body as in the past, and can reliably prevent slipping even when stacking other synthetic resin transport containers or cardboard boxes of different sizes and types It is a problem to provide.

In order to solve the above problems, the lid of the transport container according to the present invention is a synthetic resin lid 3 for closing the upper opening 2 of the transport container 1, and the lid 3 is made of a hard synthetic resin. A plurality of anti-slip portions 5 projecting upward from the upper surface portion are provided on the peripheral portion of the upper surface portion of the lid body 4 and the periphery of the upper opening 2 of the transport container 1 at the peripheral portion of the lower surface portion of the lid main body 4. A plurality of anti-slip portions 5 provided on the upper surface portion of the lid body 4, and a sealing contact portion 6 having an annular shape projecting downward from the lower surface portion of the lid body 4. An annular sealing contact portion 6 provided on the lower surface portion of the lid body 4 is integrally formed of a soft synthetic resin.

Thus, the plurality of anti-slip portions 5 projecting upward from the upper surface portion of the lid body 4 of hard synthetic resin and the annular sealing contact portion 6 projecting downward from the lower surface portion are integrally formed of the soft synthetic resin. Therefore, a plurality of soft synthetic resin non-slip portions 5 projecting upward from the upper surface portion of the lid body 4 made of hard synthetic resin, and an annular soft synthetic resin sealing contact portion 6 projecting downward from the lower surface portion. Are firmly integrated with each other via the lid body 4 of hard synthetic resin, and the plurality of non- slip portions 5 and the annular sealing contact portion 6 of soft synthetic resin are peeled off from the lid body 4 by delamination. Is reliably prevented, and the sealing contact portion 6 projecting downward from the lower surface portion of the soft synthetic resin and the plurality of anti-slip portions 5 projecting upward from the upper surface portion are displaced, separated, or peeled off. It will not drop out and be lost. Therefore, by closing the upper opening 2 of the transport container 1 with the lid 3, at the same time, an annular sealing cover made of a soft synthetic resin projecting downward from the lower surface provided on the periphery of the lower surface of the lid body 4 is used. The contact portion 6 is pressed against the peripheral portion of the upper opening 2 of the transport container 1 to be accurately sealed and kept airtight, and the sealing mechanism when the lid 3 is closed is simplified. Further, when another object is placed on the lid 3 with the upper opening 2 of the transport container 1 closed by the lid 3, a plurality of anti-slip portions 5 made of soft synthetic resin projecting upward from the upper surface portion. Thus, the slip is surely prevented. In this case, since it is not necessary to provide unevenness for slip prevention by uneven fitting on the upper surface of the lid 3 as in the prior art, even if other synthetic resin transport containers or cardboard boxes of different sizes and types are stacked, Non-slip can be reliably prevented by the anti-slip part 5 made of a plurality of soft synthetic resins provided on the peripheral part of the upper surface part. In particular, since the unevenness for preventing slipping by the uneven fitting is not necessary, the upper surface of the lid 3 can be configured to be substantially flat and provided with an antislip mechanism. In such a case, a cardboard box is mounted. When placed, there is no fear that the lower surface portion of the cardboard box is deformed due to the unevenness, and the slip prevention portion 5 of the soft synthetic resin can surely prevent the slip. In addition, since the plurality of soft synthetic resin non-slip portions 5 and the annular sealing contact portion 6 are integrated so as not to delaminate from the lid body 4, the soft synthetic resin non-slip portions 5 and the sealing portions are sealed. Even if an external force is applied to the contact portion 6 for use, the sealing function and the anti-slip function of the lid 3 are not impaired, and the sealing function and the anti-slip mechanism can be maintained stably over a long period of time.

In the present invention, the lid body is made of a hard synthetic resin as described above, and a plurality of soft synthetic resin non-slip portions projecting upward from the upper surface portion are provided on the periphery of the upper surface portion of the lid body. Since the annular sealing contact portion of the soft synthetic resin projecting downward from the lower surface portion of the lid body is provided on the peripheral portion of the lower surface portion, the synthetic resin lid having an anti-slip function and a sealing function is provided. A plurality of soft synthetic resin non-slip portions projecting upward from the upper surface portion and an annular sealing contact portion of the soft synthetic resin projecting downward from the lower surface portion. Since it is integrated up and down through the main body, it is possible to reliably prevent a plurality of anti-slip parts and sealing contact parts from peeling off from the rigid synthetic resin lid main body due to delamination, over a long period of time. Maintains stable sealing function and anti-slip mechanism To provide a lid that can also because slip of a plurality of slip of the soft synthetic resin, without requiring an uneven upper surface of a conventional cover body as the size and type of steel different from the synthetic resin Even if the transport containers and cardboard boxes are stacked, they can be surely prevented from slipping. It is possible to prevent slipping by preventing the lower surface from being deformed.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  FIG. 1 shows an embodiment of the lid 3 of the present invention. The lid 3 of the present invention is for opening and closing the upper opening 2 of the transport container 1 and is formed by two-color molding of a hard synthetic resin and a soft synthetic resin by a two-color molding machine and the same mold apparatus. Or, in a two-color molding machine, two types of movable molds, that is, a movable mold for molding with a hard constituent resin and a movable mold for molding with a soft synthetic resin are used. By sliding or rotating the mold and clamping it with the fixed mold, it is molded by two-color molding, which is molding with hard synthetic resin and molding with soft synthetic resin, or elastomer molded product is molded with mold of molding machine It is formed by insert molding which is inserted into the apparatus and formed.

  Hereinafter, an example in which the lid 3 of the present invention is formed by two-color molding of a hard synthetic resin and a soft synthetic resin by a two-color molding machine and the same mold apparatus will be described.

  As shown in FIG. 1 (a), the lid 3 has a plurality of non-slip portions 5 made of soft synthetic resin on the periphery of the upper surface portion of the lid main body 4 made of hard synthetic resin with an arbitrary interval in the circumferential direction. As shown in FIG. 1B, the portion of the lower surface portion of the lid body 4 that is in contact with the peripheral portion of the upper opening 2 of the transport container 1 is made of a soft synthetic resin. A belt-shaped sealing contact portion 6 is formed continuously in an annular shape. A plurality of non-slip portions 5 made of soft synthetic resin provided on the upper surface of the lid body 4 made of hard synthetic resin and an annular sealing contact made of soft synthetic resin provided on the lower surface of the lid body 4 The portion 6 is integrally continuous as shown in FIG.

  In FIG. 1A, reference numeral 25 denotes a gate trace of a later-described first gate 15 remaining on the lid 3, and reference numeral 26 denotes a gate trace of a later-described second gate 16. In the embodiment shown in FIG. 2, any anti-slip portion 5 among the anti-slip portions 5 made of a plurality of soft constituent resins serves as the second gate trace 26. Therefore, in the drawing, FIG. 2 (b) shows a cross-sectional view of both the X2-X2 line of FIG. 1 (a) and the X3-X3 line of FIG. 1 (a). For example, a second gate mark exists in the anti-slip portion 5 in the X3-X3 line.

  In the embodiment shown in the accompanying drawings, the outermost end of the peripheral portion of the lid body 4 made of hard synthetic resin and the downward protruding ridge portion 7 are integrally formed downward from the position drawn slightly inward from the outermost end. The recess 8 for insertion is provided in a ring shape and is downwardly opened between the downward projecting ridges 7. The recess 8 for insertion that opens downward is an upper opening of the transport container 1. 2 is a portion that fits into the peripheral portion.

  The band-shaped sealing contact portion 6 made of a soft synthetic resin has a ring-shaped sealing contact portion 6 formed on the lower surface of the peripheral portion of the lid body 4 made of the hard synthetic resin. The bottom part of the concave portion 8 is embedded in the most part, and the lower surface portion of the sealing contact portion 6 projects downward from the upper bottom portion of the fitting concave portion 8.

  A plurality of anti-slip portions 5 made of a plurality of soft synthetic resins provided on the periphery of the lid body 4 made of hard synthetic resin are positioned above the ring-shaped sealing contact portion 6 via the lid body 4. As shown in FIG. 2B, the lower end portion of each anti-slip portion 5 made of soft synthetic resin is integrally connected to the upper end portion of the upper sealing contact portion 6 made of soft synthetic resin having an annular shape as shown in FIG. .

  The lid 3 of the present invention configured as described above is formed by two-color molding of a hard synthetic resin and a soft synthetic resin. To form by two-color molding, the following mold apparatus is used. Mold.

  FIG. 4 shows a mold apparatus for molding the lid 3 of the present invention by two-color molding. The mold apparatus includes a fixed mold 10, a movable mold 11, and a slide core 12 (movable in the embodiment shown in the accompanying drawings) that is provided on either the movable mold 11 or the fixed mold 10 so as to be capable of moving forward and backward. The slide core 12 is provided on the mold 11 so as to be movable forward and backward), the first pin 13 provided on the slide core 12 so as to be movable forward and backward, and the movable mold 11 and the fixed mold 10 are moved forward and backward. A second pin 14 provided freely (in the embodiment shown in the accompanying drawings, the second pin 14 is provided to be movable forward and backward in the fixed mold 10), and a first gate 15 for injecting hard synthetic resin. And a second gate 16 for injecting the soft synthetic resin, the fixed mold 10 and the movable mold 11 are closed, and the slide core 12, the first pin 13, and the second pin By moving each 14 forward Thereby forming a primary injection molding cavity 17.

  The slide core 12 has an annular shape, and is fitted in a groove portion 18 formed in an annular shape around the periphery of the cavity forming portion 17a that forms the cavity portion 17 for primary injection molding of the movable mold 11 so as to be capable of moving forward and backward. The slide core 12 can be mechanically moved forward and backward by a drive device such as a hydraulic cylinder or an air cylinder (not shown). When the slide core 12 is moved forward, the front surface of the slide core 12 is set so as to protrude to approximately the middle in the thickness direction of the primary injection molding cavity 17 as shown in FIG. Then, as shown in FIG. 6, the front surface of the slide core 12 is set so as to slightly recede from the open end of the groove 18 (that is, the surface of the cavity forming portion 17 a).

  Further, the second gate 16 is provided in a mold (the fixed mold 10 in the embodiment shown in the accompanying drawings) that is not provided with the slide core 12. That is, a hole 24 is formed at a position facing a part of the front surface of the annular slide core 12 of the cavity forming portion 17b that forms the cavity portion 17 for primary injection molding of the fixed mold 10. A second gate 16 is provided at the bottom of the portion 24.

  A hole 19 is formed at a position facing the hole 24 provided with the second gate 16 of the slide core 12, and the first pin 13 is fitted into the hole 19 so as to be able to move forward and backward. The first pin 13 is provided with a pressing force (for example, spring force) in a forward direction by a pressing means (not shown) such as a spring material or an elastic body, and in the state where no external force is applied, the front portion of the first pin 13 Protrudes from the front end face of the slide core 12. Then, the slide core 12 is moved forward so that the front surface of the slide core 12 is positioned approximately in the middle of the thickness direction of the primary injection molding cavity 17 and the first pin 13 is moved forward. A portion is fitted into the hole portion 24 so as to close the second gate 16.

  Further, when the soft synthetic resin is injected from the second gate 16, the first pin 13 is retracted against the pressing force by the pressing means by the injection pressure, and comes out of the hole portion 24.

  The second pin 14 is fitted in a hole 20 provided in a mold (the fixed mold 10 in the embodiment shown in the accompanying drawings) in which the slide core 12 is not provided so as to be capable of moving forward and backward. The second pin 14 is provided with a pressing force (for example, spring force) in the forward direction by a pressing means (not shown) such as a spring material or an elastic body, and in the state where no external force is applied, the front portion of the second pin 14 Protrudes from the cavity forming portion 17 b of the fixed mold 10.

  The hole 20 is provided at a position facing a part of the front surface of the annular slide core 12, but the position of the hole 20 is provided at a position not facing the first pin 13, and as a result, The second pin 14 fitted into the hole 20 and the hole 24 are located away from each other.

  The second pin 14 is pushed against the front surface of the slide core 12 in a state where the slide core 12 is moved forward and the front surface of the slide core 12 is positioned approximately in the middle of the thickness direction of the primary injection molding cavity 17. When the soft synthetic resin is injected from the second gate 16 into the secondary injection molding cavity 21 formed by retracting the slide core 12, the second pin 14 is pressed by the injection pressure. And set so that the front surface of the second pin 14 is slightly retracted from the opening end of the hole 20, that is, a position slightly retracted from the cavity forming portion 17 b of the fixed mold 10. is there.

  The first gate 15 for injecting the hard synthetic resin is provided in the fixed mold 10. The first gate 15 is provided at a position that does not face the front surface of the slide core 12 of the fixed mold 10.

  In order to mold the lid 3 of the present invention using the mold apparatus as described above, molding is performed in the following order.

  First, as shown in FIGS. 4A, 4 </ b> B, and 4 </ b> C, the movable mold 11 is moved to the fixed mold 10 side and is clamped to form the primary injection molding cavity portion 17.

  In this case, as shown in FIGS. 4A, 4B, and 4C, the annular slide core 12 is advanced as shown by an arrow B by an air cylinder or a hydraulic cylinder (not shown), and the front surface of the slide core 12 is moved forward. Is positioned at a substantially intermediate portion in the thickness direction of the cavity portion 17 for primary injection molding.

  Further, as shown in FIG. 4B, the second pin 14 is advanced from the fixed mold 10 toward the movable mold 11 by the pressing force of the pressing means as indicated by the arrow A in FIG. 4B. Since it protrudes, the front end portion of the second pin 14 protrudes into the primary injection molding cavity portion 17 and its front end surface is pressed against the front surface of the slide core 12.

  Further, as shown in FIG. 4 (c), the first pin 13 is moved forward from the slide core 12 toward the fixed mold 10 side by the pressing force of the pressing means as shown by the arrow C in FIG. 4 (c) and protrudes. Therefore, the front end portion of the first pin 13 is fitted into the hole portion 24 so as to close the second gate 16.

  Next, in the above-described mold clamping state as shown in FIG. 4, a hard synthetic resin such as polypropylene is primarily injected from the first gate 15 into the primary injection molding cavity 17 as shown in FIG. The lid body 4 made of synthetic resin is molded.

  Next, the slide core 12 is retracted as shown by an arrow D in FIG. 6C by an air cylinder or hydraulic cylinder (not shown), and the front surface of the slide core 12 is slightly retracted from the opening end of the groove 18. Then, the secondary injection molding cavity 21 is formed.

  In this case, as shown in FIG. 6C, even if the slide core 12 is retracted, the first pin 13 moves forward by the pressing force indicated by the arrow C by the pressing means and keeps being fitted in the hole 24. Further, as shown in FIG. 6B, the second pin 14 is moved forward by the pressing force indicated by the arrow A by the pressing means, and the front end portion is maintained at the position where it protrudes into the primary injection molding cavity portion 17. Yes.

  Next, as shown in FIG. 7, a soft synthetic resin such as an elastomer is secondarily injected from the second gate 16 into the cavity portion 21 for secondary injection molding.

  When soft synthetic resin is subjected to secondary injection molding from the second gate 16, the injection pressure of secondary injection molding acts on the front surface of the first pin 13 as shown in FIG. As shown by the arrow E in FIG. 7C, the soft synthetic resin is injected into the secondary injection molding cavity portion 21 against the pressing force of the pressing means. In this case, the first pin 13 is retracted by the injection pressure until the front surface is at the same position as the front surface of the slide core 12.

  When the soft synthetic resin is injected and filled in the secondary injection molding cavity 21 as described above, the injection pressure acts on the front surface of the second pin 14 to push the second pin 14 by the pressing means. 7B, the front surface of the second pin 14 is slightly retracted from the opening end of the hole 20 as shown in FIG. 7B.

  As a result, a sealing contact portion 6 made of a soft synthetic resin having a belt-like annular shape with a lower end projecting slightly from the lower surface portion of the lid body 4 is formed on the periphery of the lower surface portion of the lid body 4 made of hard synthetic resin. In addition, a plurality of anti-slip portions 5 whose upper ends protrude slightly from the upper surface portion of the lid body 4 are formed on the periphery of the upper surface portion of the lid body 4.

  The lower end portions of the plurality of anti-slip portions 5 made of the soft synthetic resin formed as described above are integrally continuous with the upper surface portion of the sealing contact portion 6 made of the soft synthetic resin, and the hard synthetic portion The lid main body 4 integrally molded with the resin, the plurality of non-slip portions 5 on the upper surface portion and the annular sealing contact portion 6 on the lower surface portion integrally molded from the soft synthetic resin are composed of the hard synthetic resin and the soft synthetic resin. Since it is formed by two-color molding with a resin, a soft synthetic resin non-slip portion 5 on the upper surface side and a soft synthetic resin sealing contact portion 6 on the lower surface side are provided via a hard synthetic resin lid body 4. By firmly integrating the upper and lower sides, the anti-slip portion 5 and the sealing contact portion 6 are reliably prevented from being peeled off from the lid body 4 by delamination.

  In the embodiment shown in the accompanying drawings, the lid body 4 is formed such that the upper surface portion is a flat surface without unevenness, and a plurality of anti-slip portions 5 are provided on the periphery of the upper surface portion of the flat lid body 4. Is embedded, and the upper end portion of the anti-slip portion 5 protrudes slightly above the upper surface portion of the flat lid body 4.

  In the above-described embodiment, an example in which a two-color molding machine is formed by two-color molding of a hard synthetic resin and a soft synthetic resin by the same mold apparatus is shown, but the invention is not limited to this, and a two-color molding machine In the above, two types of movable molds, that is, a movable mold for molding with a hard constituent resin and a movable mold for molding with a soft synthetic resin, are used. The movable mold is clamped and a hard synthetic resin is injected to mold the lid body 4. Next, the movable movable mold for molding with the hard synthetic resin is slid or rotated to move away from the fixed mold, and the soft synthetic resin is molded. A movable synthetic mold for resin molding is slid or rotated and clamped to inject a soft synthetic resin, and a soft synthetic resin sealing contact portion 6 is formed between the lower surface side and the upper surface side of the hard synthetic resin lid body 4. And the non-slip portion 5 are formed integrally with the lid of the present invention. It may be molded. Further, the sealing contact portion 6 and the anti-slip portion 5 are integrally molded in advance with a soft synthetic resin, and this elastomer molded product is inserted into a mold device of a normal molding machine to inject a hard synthetic resin. You may make it shape | mold the lid | cover of this invention by shaping | molding.

  The lid 3 of the present invention molded as described above is used as a member for closing the upper opening 2 of the transport container 1 such as a transport container made of synthetic resin.

  FIG. 3 shows a state where the upper opening 2 of the transport container 1 is closed with the lid 3 of the present invention. In this case, an annular continuous recess 8 provided in the periphery of the lower surface of the lid 3 is fitted in the periphery of the upper opening 2 of the transport container 1 and provided at the bottom of the recess 8 for insertion. The lower surface portion of the sealing contact portion 6 is pressed against the peripheral portion of the upper opening 2 of the transport container 1 so that the transport container 1 is sealed. In this case, if the lower end portion of the sealing contact portion 6 protrudes slightly below the lower surface portion of the lid body 4, the sealing effect is more reliable.

  As described above, with the lid 3 closing and sealing the upper opening 2 of the transport container 1, not only the same size and same type of transport container 1 but also different transport containers 1 of different sizes and types are stacked. Or cardboard boxes may be stacked.

  In this case, since the anti-slip portion 5 made of a soft synthetic resin is provided on the peripheral portion of the upper surface portion of the lid 3, anti-slip of various sizes and types of transport containers 1 and cardboard boxes placed thereon can be performed. In this case, if the upper end portion of the anti-slip portion 5 protrudes slightly upward from the upper surface portion of the lid body 4, the anti-slip effect is more reliable.

  By the way, in order to prevent slipping, the upper surface portion is not slipped by providing irregularities on the upper surface portion, but the antislip portion 5 made of soft synthetic resin is provided on the upper surface portion to prevent slipping. Even if the portion is substantially flat, it can be surely prevented from slipping, and by making the upper surface portion flat in this way, it is possible to prevent the bottom portion of the cardboard box from being deformed by unevenness.

  As described above, the lid 3 of the present invention has an anti-slip function and a sealing function, but the anti-slip portion 5 provided on the upper surface portion of the lid main body 4 made of hard synthetic resin, and the lower surface of the lid main body 4. Since the sealing contact portion 6 provided in the part is integrally formed of a soft synthetic resin, the soft synthetic resin non-slip portion 5 on the upper surface side and the soft contact resin sealing contact portion 6 on the lower surface side Even if an external force acts to peel off the non-slip portion 5 from the upper surface portion of the lid body 4, the anti-slip portion 5 will remain in the lid body. 4 is integrated with an annular sealing contact portion 6 provided on the lower surface portion of the cover 4. Therefore, delamination from the upper surface portion of the lid body 4 can be surely prevented, and the sealing contact portion 6 is connected to the lid body. A plurality of sealing contact portions 6 are provided on the upper surface portion of the lid body 4 even when an external force such as peeling from the lower surface portion of 4 is applied. Since the integrated non-slip unit 5, so that the to delamination from the lower surface of the lid body 4 can be prevented reliably.

The cover of this invention is shown, (a) is a top view, (b) is a bottom view, (c) is a side view. (A) is sectional drawing of the X1-X1 line | wire of Fig.1 (a), (b) is sectional drawing of the X2-X2 line | wire and X3-X3 line | wire of Fig.1 (a). It is sectional drawing of the state which covered the cover of this invention on the upper opening part of the container for conveyance. The mold closing in the molding sequence in one molding method for molding the lid of the present invention shows a stage where a primary injection molding cavity is formed, and (a), (b) and (c) are shown in FIG. a) a part for forming the X1-X1 line part of FIG. 1a, a part for forming the X2-X2 line part of FIG. 1 (a) in the mold apparatus, and a X3-X3 line part of FIG. 1 (a) in the mold apparatus. It is sectional drawing of the part to do. The stage of the primary injection molding in the forming order in the forming method for forming the lid of the present invention is shown, and (a), (b) and (c) are X1-X1 line portions of FIG. It is sectional drawing of the part which shape | molds the part which shape | molds the X2-X2 line part of Fig.1 (a) in a metal mold apparatus, and the part which shape | molds the X3-X3 line part of Fig.1 (a) in a metal mold apparatus. The stage which formed the cavity for secondary injection molding in the forming order in one forming method for forming the lid of the present invention is shown, and (a), (b), and (c) of FIG. A part for forming the X1-X1 line part, a part for forming the X2-X2 line part of FIG. 1 (a) in the mold apparatus, and a part for forming the X3-X3 line part of FIG. 1 (a) in the mold apparatus. It is sectional drawing. The stage of the secondary injection molding in the molding order in one molding method for molding the lid of the present invention is shown, and (a), (b), and (c) are X1-X1 lines in FIG. It is sectional drawing of the part which shape | molds the part, the part which shape | molds the X2-X2 line part of Fig.1 (a) in a metal mold apparatus, and the part which shape | molds the X3-X3 line part of Fig.1 (a) in a metal mold apparatus. .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Transport container 2 Upper opening part 3 Lid 4 Lid body 5 Anti-slip part 6 Sealing contact part

Claims (1)

A synthetic resin lid for closing the upper opening of the transport container, wherein the lid projects on the periphery of the upper surface of the lid body made of hard synthetic resin and projects upward from the upper surface. A sealing contact portion having an annular shape projecting downward from the lower surface portion of the lid body is provided at a portion of the lower surface portion of the lid body that contacts the peripheral portion of the upper opening of the transport container. A plurality of non-slip portions provided on the upper surface portion of the lid body and an annular sealing contact portion provided on the lower surface portion of the lid body are integrally formed of a soft synthetic resin. Characteristic transport container lid.

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