JP2001341755A - Independence bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate bag making and filling of contents, to have self-sustainability, to have a good spout opening provided at the top of the bag, and to have low viscosity contents. Provided is a self-supporting bag that can control the pouring direction to a fixed downward range and can transfer contents safely and easily. SOLUTION: A self-standing bag 100 is provided on a bottom 2 with a gusset portion 6.
Formed in a standing pouch type, having a tapered spout 10 formed by heat sealing the tip and both sides at the upper corner, and sealing lines on both sides of the liquid passage of the spout 10 A and B are formed in a straight line, and the upper seal line A is formed in a horizontal straight line.
Is provided. Note that the taper angle α of the spout 10 is 3
Preferably, the angle is 5 ° to 85 °, and it is preferable to provide a cutout line 12 at the opening position of the spout 10 and a notch 13 at the end thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-supporting bag in which fluid contents such as liquids and granules are sealed and packaged, and the contents are transferred to another container at the time of use. In order to transfer the contents safely and easily to a small-diameter container such as a bottle, the contents should be poured in a fixed downward direction, especially without the contents jumping out at the beginning of pouring. The present invention relates to a self-supporting bag in which the shape of a spout portion is improved so as to be discharged.

[0002]

2. Description of the Related Art Conventionally, a so-called standing pouch-type bag which is self-supporting and has some features as a three-dimensional container has been mainly used as a bag for hermetically packaging a fluid content such as liquid or granular material. In addition, the opening is not the whole upper part of the bag but a part of the upper part of the bag so that the opening can be safely transferred to another container without spilling the contents when opening. Or a method in which a separate spout made of a plastic molded product or the like is attached to a part of the upper part of the bag by heat bonding.

[0003]

However, the method of attaching a separate spout made of a plastic molded article to a part of the upper part of the bag increases the number of manufacturing steps, increases the cost of the spout itself, and increases the spout. Since the empty bag with attached is thicker, the cost of storage and transportation is also expensive, and a special filling device with a small-diameter nozzle is required to fill the contents from the spout, In addition, the number of empty bags stacked in the feeder section of the filling machine has been significantly reduced, and the operator has to frequently supply empty bags. there were.

[0004] In addition, in the method of providing a spout having a narrow width at a part of the upper part of the bag, the operability and safety when transferring the contents to another container can be improved to some extent. When pouring, the spout opening is difficult to open, and if the viscosity of the contents is low, it pops out vigorously at the beginning of pouring, and when the remaining amount is low, the spout of the bag closes. When the bag is squeezed and pushed out, there is still a problem in terms of ease of transfer and safety, such as the contents jumping out and spilling out.

The present invention has been made in order to solve such a problem, and an object of the present invention is to eliminate the necessity of a separate spout for a molded product or the like, and to provide an ordinary self-supporting bag. The product can be manufactured in a similar process with good productivity, the contents can be easily filled, and the contents can be easily used by simply cutting off the tip of the spout provided at the upper corner of the bag. Part can be opened, its shape retention is good, and without being affected by the viscosity of the contents,
The infusion direction is stabilized downward, so that it can be poured smoothly at an appropriate flow rate, and even small containers such as bottles can be safely and easily transferred to the end. Another object of the present invention is to provide a self-supporting bag excellent in use suitability with high productivity.

[0006]

The above objects can be attained by the present invention described below. That is, the invention described in claim 1 is a bag formed by the front and rear wall films and the bottom film, and the peripheral edge portion is heat-sealed in a bag shape. The bottom film is formed in a form having a gusset portion formed by folding the bottom film inward and inserted between the lower portions of the film. Notches are provided near both lower ends of the bottom film folded inward, and the gusset portion is provided. Is formed by heat sealing with a seal pattern in which the inner side is concave from both sides to the center, and the body is formed by heat sealing the edges of both sides of the front and rear wall films, and the upper part of the bag is formed. At the corner, a tapered spout is formed by heat-sealing the tip and both sides, and the sealing lines on the upper and lower sides of the liquid passage of the spout are formed linearly. Both upper side of the seal lines are formed in the lateral direction of the linear, further comprising a self-supporting bag, wherein a cutout portion in the heat-sealed portions on both sides of the infusion outlet portion.

[0007] In the above, the linear seal lines on the upper and lower sides of the liquid passage of the spouting portion are preferably straight lines, particularly at the center of the line, but are lines having some warpage or bending. No problem. Further, the horizontal linear seal line on the upper side of the liquid passage is preferably a horizontal straight line, but may have an inclination of about 10 °, and has some warpage or bend. It may be a line. The seal pattern in which the inside of the gusset at the bottom of the bag is heat-sealed is concave from both sides to the center is a typical example of a ship bottom shape in which the inside rises in a curved line from the center of the bottom to both sides. A ship bottom-shaped seal pattern in which both sides rise straight from the bottom with a constant width and length to the outside on both sides is not limited to these, and for example, the inside may be V-shaped or U-shaped with an obtuse angle. Any seal pattern may be used as long as the seal pattern is substantially concave from both sides to the center, such as a seal pattern.

By adopting such a configuration, the self-supporting bag of the present invention is provided with self-supportingness by the configuration of the bottom portion.
In addition to being easy to handle, the appearance is also excellent, and the contents can be easily transferred since the contents can be transferred upright during pouring. Also, when transferring the contents to another container such as a bottle, the tip of the spout is cut off and opened, and the bag is tilted to the side where the spout is provided so that the contents can be spouted. And the internal pressure can open the spout. At this time, the seal lines on both the upper and lower sides of the liquid passage of the spout are formed in a straight line with a tapered shape, and the upper seal line is formed in a horizontal straight line, so that the contents are not changed. When poured out of the spout, the contents flowing to the upper part of the bag once hit the upper seal part of the lateral bag including the upper seal line, where the flow direction was changed by 90 ° and the taper was filled. It is poured out from the outlet. Therefore, a pressure loss occurs in the flow of the contents, and the flow velocity is reduced, and at the same time, the flow direction is reliably controlled downward, so that
Even if the contents are of low viscosity, they do not scatter around and can be safely transferred with a stable flow.

A cutout portion is provided in the heat seal portion on both sides of the spout portion, and the spout portion has a tapered shape. The contents can be safely transferred without displacing the spout from the mouth of the container because the parts can be inserted or the cutouts can be applied so as to be applied to the cutouts.

According to a second aspect of the present invention, the shape of the spout portion is a tapered shape in which the angle formed by the seal lines on both sides of the liquid passage is convergent at an angle of 35 ° to 85 °. It comprises the self-supporting bag according to claim 1.

When the angle formed by the seal lines on both sides of the liquid passage, that is, the taper angle of the spout is smaller than 35 °, the contents flow to the upper part of the bag when the contents are poured out. When the top of the bag expands, at the base of the spout,
It is not preferable because the film on both sides is bent so as to close the spout, and the spout is easily closed. Further, when the angle formed by the seal lines on both sides of the liquid passage is larger than 85 °, the opening property of the spout portion is good, but the upward tendency of the direction in which the contents are poured out becomes stronger, and the initial state of the pouring is increased. This is not preferable because the content is likely to jump out and the dispensing angle is widened, and the content is easily spilled.

Therefore, by adopting the above-described configuration, in addition to the operation and effect of the invention described in the first aspect,
Since the opening of the spout portion is good and the pouring speed and the pouring direction of the contents can be appropriately controlled, the contents can be more safely and easily transferred to a small-diameter container. .

According to a third aspect of the present invention, an opening means is provided at the spout.
Or a self-supporting bag according to 2. The opening means may be an opening instruction line such as a cut-out line or an opening instruction mark displayed by printing, or an easy-opening means for facilitating the opening operation by actual tearing or the like.
Further, a combination of a plurality of these may be provided as appropriate.

The easy-opening means includes, for example,
(A) In addition to the method of providing a notch, which is often used in ordinary bags, (b) the method of providing a half-cut line by laser light irradiation, etc. (c) A long and small scar group by a mechanical method at the end of the bag (D) a method of laminating an easily tearable film such as a uniaxially stretched film in a laminated film of a bag (in this case, the uniaxially stretched film is There is a variety of methods such as a method in which the stretching direction is used so as to coincide with the opening direction of the bag, so that the bag can be easily torn in a certain direction and opened), and (e) a method of attaching a cut tape or the like. One of these can be selected from these, including the opening means such as the opening instruction line, or a combination of two or more can be used as appropriate.

As the notch, a one-shaped or V-shaped notch is often used, but the shape of the notch is not limited, and any shape may be used as long as it has a pointed portion in the tearing direction. The half-cut line is not limited to a continuous linear half-cut line, but may be an intermittent half-cut line such as a perforated line. Such a half-cut line may be a single line, but assuming that the tearing direction is shifted, a plurality of half-cut lines such as one line or two lines on each side of the center half-cut line are formed in parallel. Alternatively, it can be provided in a shape converging with the center half-cut line.

By adopting such a configuration, in addition to the operation and effect of the invention described in claim 1 or 2, the heat seal portion at the tip end of the spout portion is easily cut off and opened at the correct position. Be able to open. Also,
By providing the easy-opening means such as a notch or a half-cut line alone or in combination as the opening means, tools such as scissors or the like are not required, and it is possible to tear open easily by hand alone.

According to a fourth aspect of the present invention, in the spout, the opening means is formed at an angle close to the vertical and lower than the upper seal line among the upper and lower seal lines of the liquid passage. The self-supporting bag according to any one of claims 1 to 3, wherein the self-standing bag is provided so as to cut out the seal line long. As the opening means, it is preferable to provide at least a perforation line in that the opening position can be clearly specified, and it is more preferable to use an easy-opening means such as a notch or a half-cut line in combination with the perforation line.

By adopting such a configuration, in addition to the functions and effects of the invention described in any one of the above-mentioned claims 1 to 3, the spout opening portion is opened when the contents filled in the bag are poured out. By opening by means, the spout section has a shape in which the upper seal line of the spouting path is left longer than the lower seal line, so that the control of the spouting of the contents in the lateral direction is ensured. As well as being performed, the tip of the spout is cut in an oblique direction and has a sharpened shape, so it is easy to insert the spout even in a small-diameter container, and the transfer of the contents is made more secure and It can be done easily. In addition, since the tip of the spout is cut obliquely, the area of the opening is increased, so that, for example, even when the viscosity of the content is relatively high, the content can be transferred in a short time. There is. The configuration of such a spout opening means is not limited to the self-supporting bag of the present invention. For example, the spout is provided with a narrow width at the upper corner of the bag, and A similar effect can be obtained by applying the bag to a bag provided in a shape in which the direction of the bag is directed to the lateral direction or obliquely outward and upward.

According to a fifth aspect of the present invention, when at least the spout is opened by the upper cutout of the cutouts provided in the heat seal portions on both sides of the spout. The self-supporting bag according to any one of claims 1 to 4, wherein a knob portion is formed, and a spout portion is formed in a tapered shape by a lateral cutout portion.

By adopting such a configuration, in addition to the operation and effect of the invention according to any one of claims 1 to 4, when the spout is opened, the knob is pinched to grip the tip of the spout. Since the part can be cut off, the opening operation is further facilitated. Further, since the spout portion is formed in a tapered shape by the lateral cutout portion, even when transferring the contents to a small-bore bottle or the like, it is easy to insert the tip end of the spout portion into the mouth portion of the bottle. And the contents can be transferred more safely.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the invention, such as a film used for manufacturing a self-supporting bag and a method for manufacturing a self-supporting bag of the present invention, will be described. The film used for producing the self-supporting bag of the present invention is mainly a laminated film mainly composed of plastic, but is not particularly limited, for example, a known laminated film used for various liquid pouches and the like , Any of which can be used. From these, suitable ones can be freely selected and used according to the use conditions such as the type of contents to be packaged and the presence or absence of heat treatment after filling.

A typical example of the structure of the laminated film that can be preferably used is as follows. (1) ON film / adhesive / L / LDPE film (sealant layer) (2) ON film / adhesive / uniaxially or biaxially oriented H
DPE film / adhesive / L / LDPE film (sealant layer) (3) ON film / adhesive / uniaxially or biaxially oriented P
P film / adhesive / L / LDPE film (sealant layer) (4) ON film / adhesive / uniaxially or biaxially oriented P
P film / adhesive / aluminum foil / adhesive / LL
DPE film (sealant layer) (5) ON film (silica or alumina deposited layer) / adhesive / uniaxially or biaxially oriented PP film / adhesive /
L / LDPE film (sealant layer) (6) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / L / LDPE layer) (sealant layer is L / LDPE layer) (7) ON film / anchor coat layer / Co-extrusion coat layer (HDPE layer / LDPE layer) / adhesive / L-LDP
E film (sealant layer) (8) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / L / LDPE film (sealant layer) (9) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / CPP film (sealant layer) (10) PET film / adhesive / ON film / adhesive /
Aluminum foil / adhesive / L / LDPE film (sealant layer) (11) PET film / adhesive / ON film / adhesive /
Aluminum foil / adhesive / CPP film (sealant layer) (12) PET film / adhesive / EVOH film / adhesive / ON film / adhesive / CPP film (sealant layer) Instead, various combinations of laminated films can be used.

In the above, the ON film is a biaxially stretched nylon film, the L / LDPE is a linear low density polyethylene, the HDPE is a high density polyethylene, the LDPE is a low density polyethylene, the PP film is a polypropylene film, and the PET film is biaxially stretched. A polyethylene terephthalate film and an EVOH film indicate a saponified ethylene-vinyl acetate copolymer film, and a CPP film indicates a non-stretched polypropylene film. Since the adhesive between the layers is usually laminated by a dry lamination method, an adhesive for dry lamination such as a two-component curable polyurethane-based adhesive is used. In addition, the anchor coat is a kind of primer coat that is previously coated on the base film side in order to improve adhesiveness when laminating a resin by extrusion coating.

In the construction of the above-mentioned laminated film, ON
Film and PET film impart mechanical strength and printability to the bag as a base film, and the uniaxially stretched HDPE film and the uniaxially stretched PP film used for the intermediate layer open the spout of the bag in the stretching direction. By using the same direction as the tearing direction, the directionality of the tearing can be further stabilized. When a biaxially stretched HDPE film or a biaxially stretched PP film is used for the intermediate layer, the thickness of the laminated film can be increased, its rigidity and mechanical strength can be increased, and the steam barrier property can be improved. . An aluminum foil, a silica or alumina vapor-deposited layer, an EVOH film and the like are laminated to impart various gas barrier properties and enhance the storage stability of the content to be filled.

Further, as the innermost sealant layer, L
-Two examples of LDPE film and CPP film are given. L-LDPE film is excellent in heat seal stability and content resistance, such as stress cracking resistance to surfactants. CPP film is heat resistant. It has excellent properties and low odor, and is suitable for packaging of contents requiring these properties.

In the sealant layer, in addition to the above, depending on the content to be filled, ethylene / α-olefin copolymer, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / acrylic ester copolymer may be used. Polymers, ionomers, polyester resins and the like can also be appropriately selected and used.

In particular, an ethylene / α-olefin copolymer obtained by polymerization using a single-site catalyst such as a metallocene catalyst has a narrow molecular weight distribution and a stable copolymerization ratio. In addition, the sealant layer of a bag having a step due to a difference in film overlap in a heat-sealed portion, such as the self-supporting bag of the present invention, can prevent pinholes due to missing seals. Suitable in point. Furthermore, by using a blend of the copolymer and an olefin elastomer, the heat fluidity of the sealant layer is improved, and the generation of pinholes due to the steps can be more effectively prevented.

Next, a method for producing a self-supporting bag of the present invention produced using the above-described laminated film will be described. The self-supporting bag of the present invention has a form in which the bottom is formed in a gusset form to impart self-supporting properties. Therefore, the self-standing bag can be basically manufactured using a conventional standing pouch bag making machine.

However, it differs from a normal standing pouch in the following points. A point that a narrow width tapered spout formed by heat sealing the tip and both sides is provided at the upper corner of the bag. In the heat seal portion on both sides of the spout portion, a knob portion for facilitating opening of the spout portion is formed, and a cutout portion is provided to make the spout portion tapered. . The spout port is provided with an easy-opening means such as a notch, a half-cut line or the like as appropriate.

Accordingly, a processing device for providing the additional components described above, that is, a trimming device for providing a spout, a notch, an easy-opening means, etc.
Punching equipment, heat sealing equipment, laser light irradiation equipment, etc. are appropriately added to the standing pouch bag making machine,
Alternatively, it can be easily manufactured by partial modification.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below more specifically with reference to the drawings. However, the present invention is not limited to these drawings. 1 to 4 are front views each showing the configuration of an embodiment of the self-supporting bag of the present invention. Also, FIG.
FIG. 7 is a front view showing the configuration of a self-supporting bag of an application example in which the opening means provided at the spout of the self-supporting bag of the present invention is applied to the spout of another self-supporting bag.

FIG. 1 is a front view showing the structure of the first embodiment of the self-supporting bag of the present invention. The self-supporting bag 10 shown in FIG.
0, the bottom and the trunk are formed in the same manner as a normal standing pouch, and the bottom 2 is formed by folding the bottom film inward between the lower portions of the front and rear wall films 1, 1 '. In this case, near the lower ends on both sides of the bottom film folded inward, semi-circular bottom film cutouts 4, 4 are formed in the form having a gusset portion 6 inserted up to the bottom film folding portion 3. The gusset part 6 is formed by heat-sealing with a bottom seal part 5 in which a gusset part 6 has a shape in which the inside rises in a curved line on both sides from the center of the bottom, that is, the body part is formed on both front and rear sides. Of the wall films 1, 1 'are heat-sealed with side seal portions 7, 7.

At the upper corner portion (left corner portion in the figure) of the self-supporting bag 100, the tip end portion and both side portions are heat-sealed by a spout portion sealing portion 8 to form a tapered spout portion 10. Is provided, and the spout 10
The upper and lower seal lines A and B on the upper and lower sides of the liquid passage are formed linearly, and the upper seal line A is formed as a horizontal straight line. Are provided with notches 11a and 11b, and the upper notch 11a forms a knob 14 for opening the spout 10 and the notch 1 on the lateral side.
1b, the spout 10 is formed into a tapered shape. Further, the lower left corner of the upper cutout 11a is formed in a pointed shape to have a notch function, and the tip of the spout 10 is obliquely outwardly downward from the corner. Cut line 1 for cutting and opening
2, and a notch 13 is provided at the lower end thereof.

At the position of the cut line 12, a half-cut line by laser light irradiation or the like can be provided along the cut line 12 as an easy-opening means.
The opening property of the spout 10 can be further improved.
Also, the upper seal portion 9 at the upper edge of the self-supporting bag 100
In order to use this part as a filling port for contents, an unsealed opening is used before filling the contents, and the contents are sealed by heat sealing after filling the contents. These points also apply to the self-supporting bag shown in FIGS. 2 to 7 below.

In the configuration of the self-supporting bag 100, the lower left corner of the cutout portion 11a on the upper side of the spout 10 is formed into a pointed shape so as to have a notch function, and from the tip of the corner portion. The cutout line 12 is provided diagonally outward and downward, and the notch 13 is provided at the lower end of the cutout line 12. Notch 13 even from 11a side
Even from the side, it can be torn from any side and opened. However, in general, the sheet is often torn from the upper side. Therefore, the spout section 1 is formed by the upper cutout 11a.
A knob 14 is formed on the side of the tip of the zero. Therefore, the notch 13 at the lower end of the perforated line 12 is often not used, and may be omitted when unnecessary.

In the configuration of the self-supporting bag 100, the tapered shape of the spout port 10, that is, the angle α between the linear seal lines A and B on the upper and lower sides of the liquid passage is formed by a horizontal straight line. The angle of the lower seal line B is variably set with respect to the upper seal line A to be set, and the taper angle α of both is 35 ° to 85 °.
It is preferable to set so as to converge at an angle of °. In the self-supporting bag 100 shown in FIG. 1, the taper angle α is 70 °. The linear seal lines A and B on both the upper and lower sides of the liquid passage are not limited to straight lines but may be lines having some curvature or bend, as long as the control of the flow direction of the contents is not hindered. .

The position of the cut line 12 for opening the spout 10 and the cutouts 11 on both sides of the spout 10
The shape and size of a and 11b are not particularly limited, and may vary depending on the taper angle α of the seal lines on the upper and lower sides of the liquid passage, the viscosity of the contents, the size of the mouth of the container to be transferred, and the like. It can be set appropriately according to the situation.

The angle of the cut line 12 with respect to the direction of the top of the perpendicular of the cut line 12 is 4 degrees.
When it is smaller than 5 ° and as close to 0 ° (vertical) as possible, the horizontal straight portion of the seal line A on the upper side of the liquid passage at the spout can be used more effectively, and the content can be reduced. This is preferable in that the pouring direction can be easily controlled within a certain range in the horizontal direction in the figure.

By adopting such a configuration, the content of the self-supporting bag 100 can be easily filled from the unsealed upper seal portion 9 because the width of the unsealed upper seal portion 9 is wide. The bag 100 filled with the contents of the above and sealed by degassing and sealing the upper seal portion 9 is provided with autonomy by the configuration of the gusset portion 6 at the bottom portion, is easy to handle, and has excellent appearance. When the filled content is transferred to another container such as a bottle, the tip of the spout 10 is, for example, picked by the knob 14 and the upper cutout 1 is cut out.
Using the sharp corner at the lower left of 1a, cut line 1
By tearing along 2, the spout 10 can be easily opened.

The opened self-supporting bag 100 is provided with cutouts 11a and 11b on both sides of the spout port 10, and the liquid passage of the spout port 10 is formed by an upper horizontal seal. Since the line A and the lower sloping seal line B are formed to have a tapered shape at the above angle, the spout port 10 is easily opened, and the body of the self-supporting bag 100 is supported by hand. The opened spout 10 is tilted toward the outlet and opened.
For example, it is inserted into the mouth of the bottle and its notch 11a
, 11b can be transferred while being applied to the mouth of the bottle, so that the spout 10 is fixed to the mouth of the bottle in a stable state, and Upper seal line A of the liquid passage of the outlet 10
It is controlled in the direction of the extension of the line, and the flow rate is moderately moderated, so that even low-viscosity contents do not spill outside,
It can be safely and easily transferred.

In this case, the taper angles α of the seal lines A and B on both the upper and lower sides of the liquid passage of the pouring port 10 are 70 in this case.
°, but is set in the range of 35 ° to 85 °, so that when the internal pressure due to the contents is applied to the spout 10, the spout 10 automatically opens and does not close halfway. Also, even at the beginning of pouring or when the internal pressure is positively applied, the contents do not scatter, and the contents can be safely and easily transferred to the end.

FIG. 2 is a front view showing the structure of a second embodiment of the self-supporting bag of the present invention. The self-supporting bag 20 shown in FIG.
0 changes the seal pattern of the bottom seal portion 5 in the configuration of the self-supporting bag 100 shown in FIG. 1 to a ship bottom shape in which both sides rise outward in a straight line from the bottom having a fixed width and length. The bottom gusset 6 is heat-sealed, and the shape of the spout 10 provided at the upper corner is adjusted so that the taper angles α of the upper and lower seal lines A and B on the upper and lower sides of the liquid passage are 50 °. The notch 11b on the lower side of the spout 10 is changed into a shape that cuts deeply inward, and a cutting line 12 for opening the tip of the spout 10 is formed. Is changed to an angle closer to the vertical direction.

By adopting such a configuration, the self-supporting bag 200 is different from the self-supporting bag 100 of the configuration shown in FIG. 1 in that the seal pattern of the bottom seal portion 5 has a certain width and length. The shape of the lower part of the bag after filling the contents changes to a hexagonal column shape by changing to a ship bottom shape in which both sides rise outward in a straight line from the bottom of the bag, but the independence of the bag remains almost unchanged. As with the self-supporting bag 100 shown in FIG.
Excellent independence can be provided.

The shape of the spout 10 provided at the upper corner is reduced by reducing the taper angle α of the seal lines A and B on both the upper and lower sides of the liquid passage from 70 ° to 50 °.
Accordingly, the notch 11b on the lower side of the spout 10
Into a shape that cuts deeply into the inside.
By changing the angle of the cutout line 12 at the leading end of 0 to an angle closer to the vertical direction, the width of the base of the spout 10 is narrowed, and at the same time, the orientation of the spout 10 is more horizontal. Therefore, when the content is poured out by tilting the self-supporting bag 200, the flow of the content can be controlled in a further downward narrow range, and the content is transferred to a container such as a small-bore bottle. Even in this case, the transfer can be performed more safely and easily. And, except for the above changes,
Since the configuration is the same as that of the self-supporting bag 100 shown in FIG. 1, the same operation and effect as those described for the self-supporting bag 100 are achieved.

FIG. 3 is a front view showing the configuration of a third embodiment of the self-supporting bag of the present invention. The self-supporting bag 30 shown in FIG.
In the configuration of the self-supporting bag 100 shown in FIG. 1, 0 is an opening means provided in the spout portion 10, in this case, only the cutout line 12, the upper cutout portion 11a and the notch 13 are described in claim 4. As noted, at near-vertical angles,
In addition, the seal line B on the lower side of the seal line A on the upper and lower sides of the seal lines on the upper and lower sides of the liquid passage is changed so as to be cut longer. That is, the cutout 11a on the upper side of the spout 10 is provided in such a manner that the left end thereof in the drawing is further shifted to the left (the position closer to the tip of the spout 10). A cut line 12 is provided slightly downward from the sharp corner of the base, and a notch 13 is provided at the lower end thereof. Other configurations are the same as those of the self-supporting bag 100 shown in FIG. Thus, the self-supporting bag 300 is configured.

By adopting such a configuration, in addition to the operation and effect described for the self-supporting bag 100 having the configuration shown in FIG. By pulling the knob 14 and tearing it open along the perforated line 12 from the lower left pointed corner of the upper cutout 11a, the spout 10 is formed by the upper seal line A of the liquid passage. Since the shape is left longer than the lower seal line B, the control of the lateral discharge of the contents is more reliably performed, and the upper end of the tip of the spout 10 is sharper. Therefore, even for a small-diameter container, the spout port can be easily inserted into the opening of the container, and the contents can be transferred more safely and easily.

FIG. 4 is a front view showing the configuration of a fourth embodiment of the self-supporting bag of the present invention. The self-supporting bag 40 shown in FIG.
0 is an opening means provided in the spout 10 in the configuration of the self-supporting bag 200 shown in FIG. 2, and in this case also, the cutout line 12, the upper cutout 11a and the notch 13
As described in claim 4, only the lower seal line B is cut longer than the upper seal line A among the upper and lower seal lines on the upper and lower sides of the liquid passage, as described in claim 4. It is modified and configured. That is, the cutout 11a on the upper side of the spout 10 is provided in such a manner that the left end thereof in the drawing is further shifted to the left (the position closer to the tip of the spout 10). The cut line 12 is provided substantially vertically downward from the sharp corner of the lower end, and a notch 13 is provided at the lower end thereof.
And a self-supporting bag 400 is configured.

In the case where such a configuration is employed, the above-mentioned FIG.
In addition to the operation and effect described in the self-supporting bag 200 having the configuration shown in FIG. 5, when the contents are poured out, the spouting portion 10 is opened by the opening means, so that the spouting portion 10 Since the upper seal line A has a shape that is left longer than the lower seal line B, the control of the discharge of the contents in the lateral direction is more reliably performed, and the tip of the spout port 10 is formed. Since the upper end has a sharper shape, the spout 10 can be easily inserted into the mouth of the container even in a small-diameter container, and the contents can be transferred more safely and easily.

FIGS. 5, 6, and 7 are front views each showing the configuration of an application example in which the opening means provided at the spout of the self-supporting bag of the present invention is applied to another self-supporting bag. . The self-supporting bag 500 shown in FIG. 5 has a bottom 2 and a spout 1 such as a body.
Other than 0, it is configured in the same manner as the self-supporting bag 100 shown in FIG. 1, and the spout 10 is provided at one corner (the left corner in the figure) of the top of the bag 500, and the tip and both sides Are heat-sealed by the spout-portion sealing portion 8 and are provided in a tapered shape which faces obliquely outward and upward. Also, the inner lines of the heat seal portions on both sides of the spouting portion 10, that is, the upper seal line C and the lower seal line D of the liquid passage are formed substantially linearly in this case as well.

Notches 11a and 11b are provided in the heat seal sections on both sides of the spout section 10, respectively.
As an opening means for cutting and opening the tip of the spout 10, a notch-shaped notch facing downward is provided at the lower left corner of the cutout 11 a on the upper side of the spout 10, The seal line D, which is directed downward and at an angle close to the vertical, and which is lower than the upper seal line C among the upper and lower seal lines of the liquid passage.
Is provided so as to cut out a long line, and a notch 13 is provided at the lower end thereof.

By adopting such a configuration, the self-supporting bag 500 is provided so that the spout portion 10 is directed obliquely upward and upward. Does not have the function to control
By opening the spout port 10 with the opening means provided at 0, the upper seal line C of the liquid passage has a shape left longer than the lower seal line D, and
Since the seal lines on both sides are linear and formed at an appropriate taper angle, the spout port is easy to open, and the pouring direction of the contents is in the direction along the upper seal line C. Since the upper end side of the opening 10 has a pointed shape, the spout 10 can be easily inserted into the opening of the container even for a small-diameter container, and the contents can be safely and easily transferred. . In addition, when the above-described opening means is applied, the area of the opening can be increased, so that there is an advantage that the contents can be transferred in a short time even if the viscosity of the contents is relatively high.

The self-supporting bag 600 shown in FIG. 6 is different from the self-supporting bag 10 shown in FIG.
0, and the outlet 10 is a bag 600
The tip and both sides are heat-sealed at one corner (the left corner in the figure) of the upper part of the upper part by a spout seal part 8, and are provided in a tapered shape facing diagonally outward and upward. However, in the spout 10, of the heat seal portions on both sides, the heat seal portion on the side of the bag is formed in a vertical direction in a shape using the upper portion of the side seal portion 7 of the bag as it is, The other heat-seal portion (at the center of the bag) is formed in a slanted linear shape facing obliquely outward and upward, so that the spout 10 is tapered. Therefore, also in this case, the inner lines of the heat seal portions on both sides of the spout port 10, that is, the seal lines C and D on both sides of the liquid passage are formed linearly. The V-shaped notch 11a is provided only on the center side (right side in the figure) of the bag of the spout 10 in the cutout provided in the spout. A knob 14 is formed. In this case as well, in this case, a notch-shaped notch is provided on the side of the notch 11a near the tip of the spout 10, and the opening is slightly obliquely outward from the tip. At a downward angle close to the vertical, and among the seal lines on both sides of the liquid passage, the seal (the side of the bag) below the seal line C on the upper side (the center of the bag). A cut line 12 is provided so as to cut the line D long, and a notch 13 is provided at a lower end thereof.

Even in such a configuration, since the self-supporting bag 600 is provided so that the spouting portion 10 is directed obliquely outward and upward, the function of controlling the direction in which the contents are spouted horizontally is not provided. However, by opening the spout 10 by the opening means provided in the spout 10, the upper seal line C of the liquid passage is left longer than the lower seal line D. Since the seal lines on both sides are linear and formed at an appropriate taper angle, the spout port is easy to open, and the direction of pouring the contents is in the direction along the upper seal line C. At the same time, the spout 10 has a sharpened upper end side of the opening, so that the spout 10 can be easily inserted into the mouth of the container even in a small-diameter container, and the contents can be safely and easily transferred. Can be replaced.

The self-supporting bag 700 shown in FIG. 7 has the same structure as the self-supporting bag 100 shown in FIG. 1 except for the bottom 2 and the spout 10 such as the body. The spout 10 is formed at one corner (the left corner in the figure) of the upper portion of the bag 700 by heat-sealing the tip and both sides with the spout seal 8. In this case, the inner lines of the heat seal portions on both sides of the spout portion 10, that is, the upper seal line C and the lower seal line D of the liquid passage are formed by arc-shaped curves, and the tip portion is in the lateral direction. And is formed in a tapered shape.
Notch portions 11a and 11b are provided in the heat seal portions on both sides of the spout portion 10, and the upper cut portions 11a and 11b are provided.
As a result, a knob 14 is formed, and a notch shape pointing downward is formed at the lower left corner of the upper cutout 11a as an opening means for cutting off and opening the tip of the spout 10. And a seal line D that is lower than the upper seal line C among the upper and lower seal lines of the upper and lower sides of the liquid passage, at a substantially vertical angle from the tip thereof downward. A notch 13 is provided at the lower end of
Is provided.

By adopting such a configuration, the self-supporting bag 700 is formed by an arc-shaped upper seal line C and a lower seal line D on both sides of the liquid passage of the spout port 10. However, since the tip of the spout 10 is oriented in the lateral direction and is formed in a shape that is appropriately tapered, like the self-supporting bag of the present invention, the opening of the spout is good, The dispensing direction of the contents can be controlled within a certain range in the horizontal direction. Further, by opening the spout 10 by the opening means provided in the spout 10, the upper seal line C of the liquid passage is left longer than the lower seal line D. Therefore, the control of the spouting of the contents in the lateral direction is more securely performed, and the upper end of the tip end of the spout portion 10 has a more sharpened shape. The part 10 can be easily inserted into the mouth of the container, and the contents can be transferred more safely and easily.

[0056]

As described above, according to the present invention, there is no need for a separate spout made of a molded product or the like.
The product can be manufactured with good productivity in the same manufacturing process as a normal self-supporting bag, the contents can be easily filled, and the self-sufficiency, form stability and appearance of the bag after filling and sealing the contents are good. In use, the tip of the spout provided at the upper corner of the bag can be easily cut off and opened using the opening means provided at this portion, whereby the shape is retained. A good spout is opened. In addition to the high-viscosity contents, the low-viscosity contents can be controlled at an appropriate flow rate, and the pouring direction can be controlled in a downward constant range. It is said that it is easy to insert the spout into the mouth of the container, even for containers such as small bottles without blocking, and it is possible to transfer the contents safely and easily to the end without spilling the contents outside. The effect is that a self-supporting bag that is inexpensive and has excellent usability can be provided with high productivity.

[Brief description of the drawings]

FIG. 1 is a front view showing a configuration of a first embodiment of a self-supporting bag of the present invention.

FIG. 2 is a front view showing the configuration of a second embodiment of the self-supporting bag of the present invention.

FIG. 3 is a front view showing the configuration of a third embodiment of the self-supporting bag of the present invention.

FIG. 4 is a front view showing the configuration of a fourth embodiment of the self-supporting bag of the present invention.

FIG. 5 is a front view showing the configuration of a first application example in which the opening means provided at the spout of the self-supporting bag of the present invention is applied to another self-supporting bag.

FIG. 6 is a front view showing a configuration of a second application example in which the opening means provided at the spout of the self-supporting bag of the present invention is applied to another self-supporting bag.

FIG. 7 is a front view showing the configuration of a third application example in which the opening means provided at the spout of the self-supporting bag of the present invention is applied to another self-supporting bag.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1, 1 'Wall film 2 Bottom part 3 Bottom film folded part 4 Bottom film cutout part 5 Bottom seal part 6 Gusset part 7 Side seal part 8 Outlet part seal part 9 Upper seal part 10 Outlet parts 11a, 11b Notch Part 12 Cut-out line 13 Notch 14 Knob part A Upper seal line B Lower seal line C Upper seal line D Lower seal line α Tapering angle 100, 200, 300, 400, 500, 600, 7
00 Independence bag

Continued on the front page F term (reference) 3E064 AB25 AB26 BA17 BA27 BA28 BA29 BA30 BA36 BA55 BA60 BB03 BC01 BC08 BC18 BC20 EA03 EA04 EA08 EA12 EA23 FA04 FA06 GA01 HM01 HN06 HP01 HP02 HP03 HP04 HP05 HS05

Claims (5)

[Claims] 1. A bag which is formed by wall films on both front and rear sides and a bottom film and whose peripheral edges are heat-sealed in a bag shape, wherein the bottom of the bag is located between the lower portions of the front and rear wall films. The bottom film is formed in a form having a gusset part which is folded inward and inserted, and a notch is provided near the lower end on both sides of the bottom film folded inward, and the gusset part is formed such that the inner side is formed from both sides. The body is formed by heat sealing with a seal pattern that is concave toward the center, and the body is formed by heat sealing the edges of both sides of the front and rear wall films. And a tapered outlet formed by heat-sealing the both sides, and seal lines on both the upper and lower sides of the liquid passage of the outlet are formed linearly, and the upper seal is formed. Lines are formed transversely of the linear, further, self-supporting bag, wherein a is a notch heat-sealed portions on both sides of the infusion outlet portion. 2. The shape of the spouting portion is tapered so that the angle formed by the seal lines on both sides of the liquid passage is convergent at an angle of 35 ° to 85 °. Independence bag. 3. The self-supporting bag according to claim 1, wherein an opening means is provided at the spout. 4. An unsealing means is provided at said spout to cut off a seal line at a nearly vertical angle and a lower seal line than an upper seal line among upper and lower seal lines of said liquid passage. The self-supporting bag according to any one of claims 1 to 3, wherein the self-supporting bag is provided in a bag. 5. A notch provided on a heat seal portion on both sides of the spout portion, wherein an upper notch defines:
The knob portion at least at the time of opening the spout portion is formed, and the spout portion is formed in a tapered shape by a lateral cutout portion.
The self-supporting bag according to any one of the above.