JP2011219134A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag can easily permit a liquid to permeate from a bottom and be separated from a solid in a standing state under such conditions that the solid and the liquid are mixed in a bag.SOLUTION: A bottom member made of a plastic mesh 12 two-folded inwardly via a crease 12a is held between a pair of films 11 and 11. A periphery of the plastic mesh 12 is sealed with one or both of the pair of films 11 and 11 via seals 12b and 12c. The pair of films 11 and 11 extend oppositely to the crease 12a of the plastic mesh 12, and the pair of films 11 and 11 are sealed together via a seal 14a on the extended part 14.

Description

  The present invention relates to a packaging bag that can easily separate a solid from a solid by allowing the liquid to permeate from a state where the solid and the liquid are mixed in the bag.

  When liquid is injected into a bag filled with solid or a mixture of solid and liquid is filled, it may be desirable to drain only the liquid from the bag and separate it from the solid.

  For example, in Patent Document 1, a permeable inner bottom member such as a filter paper is installed over the entire width of the bag body on the inner surface of the bag body that is kept airtight, and the inside of the bag body is divided into two parts. A packaging bag is described which is provided with a planned opening at the lower part of the bag body below the bag body, and for example, when filled with powdered coffee, the bottom part can be opened and then the hot water can be poured to make coffee. .

  In Patent Document 2, a liquid draining seal portion is provided on at least one side or a part of the side of the packaging bag to have a liquid separation and discharge function. For example, contents containing solids such as pickles and liquids are mixed. In the case of packaging, a packaging bag is described in which only solid matter can be easily taken out.

Japanese Utility Model Publication No. 57-188666 JP 2008-285190 A

However, when a flexible material such as filter paper is used as in the packaging bag described in Patent Document 1, there is a problem in that it easily contains water and is poor in drainage.
Moreover, when only a liquid can be discharged | emitted from between liquid drain seal parts like the packaging bag described in patent document 2, the self-supporting property at the time of liquid discharge | emission cannot be provided to a packaging bag.

  The present invention has been made in view of the above circumstances, and is a packaging bag that can be easily separated from a solid by allowing the liquid to easily permeate from the bottom in a state where the solid and the liquid are mixed in the bag. It is an issue to provide.

In order to solve the above-mentioned problems, the present invention is characterized in that a bottom member made of a plastic mesh folded inward by the fold line is sandwiched between a pair of films, and the periphery of the plastic mesh is between the pair of films. The packaging is characterized in that the pair of films are sealed on one side or both sides, and the pair of films are extended on the side opposite to the fold line of the plastic mesh, and the pair of films are sealed in the extended portion. Provide a bag.
The pair of films preferably include an easy-open portion in the extended portion.
It is preferable that an oblique seal portion is provided from both ends of the fold line toward the seal portion with the pair of films on the opposite side to the fold line.

  According to the present invention, the plastic bag can be spread and used as the bottom member by opening the packaging bag at the extending portion, and the liquid can be easily permeated and separated from the solid in a self-supporting state. Is possible.

It is a top view which shows the 1st form example of the packaging bag of this invention. It is a longitudinal cross-sectional view of the packaging bag shown in FIG. It is a top view which shows the state which sealed the upper part of the packaging bag shown in FIG. It is a top view which shows the 2nd form example of the packaging bag of this invention. It is a top view which shows the 3rd example of a packaging bag of this invention.

The present invention will be described below based on preferred embodiments with reference to the drawings.
FIG. 1 shows a packaging bag 10 according to a first embodiment of the present invention.
The packaging bag 10 shown in FIG. 1 is sandwiched between two body films 11, 11 having the same planar shape and a pair of films 11, 11, and is folded in two with a fold line 12a as a center line. It is comprised from the bottom member 12 made into.

As shown in FIG. 2, the bottom member 12 is folded so that the fold line 12a is inward with respect to the space 10a in which the contents are accommodated.
Further, as shown in FIG. 1, side edge seal portions 11 a and 11 b are formed on both side edges of the packaging bag 10, respectively. At the price point where the side portion of the bottom member 12 is sandwiched between the films 11 and 11, the bottom member 12 and the film 11 are sealed by the side edge seal portions 11a and 11b. Further, the side of the bottom member 12 opposite to the folding line 12a is sealed with the body film 11 by the seal portion 12b.

  As shown in FIG. 2, the seal portion 12b seals the outer surface of the bottom member 12 with respect to the fold line 12a only with one film 11, and the bottom members 12 can be separated from each other. Moreover, the film 11 is extended beyond the seal part 12b, and the films 11 and 11 are sealed in this extended part 14 without the bottom member 12 interposing. Thereby, the space 10b between the extended portion 14 and the bottom member 12 is sealed by the seal portion 14a.

The bottom member 12 of this embodiment is made of a plastic mesh. Examples of the plastic mesh (plastic net) include a plastic wire formed in a lattice shape. For example, when it consists of thermoplastics which have heat sealability like polyolefin resin, such as polyethylene (PE) and polypropylene (PP), since it can seal with the film 11 by heat seal, it is preferable.
A plastic mesh is preferable because it has high tensile strength and excellent deformability by using a stretched wire as compared with a nonwoven fabric or a perforated film. In order to improve drainage, it is preferable to use a wire having a low liquid absorbency.

The plastic mesh 12 is preferably a woven fabric in which vertical and horizontal wires are woven so as to cross vertically by a plain weave or twill weave. As the wire, a filament or fiber obtained by forming plastic into a linear shape by extrusion or stretching, or a multifilament or a twisted yarn manufactured by combining a plurality of these can be used.
When a monofilament woven fabric is used, the shape when the bottom is widened is preferable because of its rigidity.

  The mesh shape of the plastic mesh 12 may be a rectangle such as a square or a rectangle, or a polygon such as a rhombus, a triangle, or a hexagon. If the crossing points (crossing points) of the vertical and horizontal wires are fixed by heat sealing or knotting, they can be bonded more firmly.

  The mesh size (opening) and wire diameter of the plastic mesh 12 are appropriately set according to the size and weight of the solid material (contents and input after opening) that needs to be separated from the liquid. It is possible. Examples of the size of the eyes include about 0.1 to 10 mm, and examples of the wire diameter include about 0.01 to 1.0 mm.

In order to facilitate opening, the extending portion 14 includes an opening auxiliary line made of a half cut groove 15a formed by, for example, a laser so as to cross the packaging bag 10, and one or both side edge seal portions 11a, The easy-opening part 15 which consists of opening start means etc., such as the notch 15b which can be formed by punching etc. on 11b, can also be provided. In the case of this embodiment, when opening is started from the notch 15b and tearing along the half-cut groove 15a, the bottom is opened.
When the opening assist line includes the half-cut groove 15a, there is no possibility of leaking out of the film 11 even if the liquid-containing contents are filled and the liquid is leached into the space 10b below the bottom member 12.

When the extending portion 14 is opened, the packaging bag 10 according to the present embodiment can provide the self-supporting property by expanding the bottom member 12 that is folded inward by the folding line 12a.
The bottom member 12 is at the corner between the side edge seal portions 11a and 11b and the seal portion 12b. An oblique seal portion 12c extending obliquely from both ends of the fold line 12a toward the seal portion 12b and sealed with the body film 11 is provided. Thereby, it can prevent that the content interposes between the trunk | drum film 11 and the bottom member 12 of the said corner, and can suppress that the bottom member 12 becomes difficult to spread.

  The bottom member 12 is made of a plastic mesh, and the periphery thereof is sealed to one or both of the pair of body films 11 and 11 over the entire circumference. Therefore, when the bottom portion of the packaging bag 10 is expanded, the plastic mesh 12 is interposed. Liquid can be permeated. Further, the liquid does not leak through the portion where the bottom member 12 is sealed with the body film 11 and the body film 11 thereabove.

  As a film used for constituting the bag body such as the body film 11, a conventionally used film such as a biaxially stretched polypropylene, a biaxially stretched polyamide, a biaxially stretched polyester or the like is used as a base film. And a laminate in which a polyolefin resin such as low density polyethylene, linear low density polyethylene, ethylene-vinyl acetate copolymer, and polypropylene is laminated as a sealant layer on these base films. Examples of the method for producing the laminated film include a dry laminating method, an extrusion laminating method, and a coextrusion method. An adhesive or an anchoring agent can be provided between the base film layer and the sealant layer in order to improve the adhesive strength. In this case, a plurality of substrate films may be laminated to increase the strength of the bag. Alternatively, a metal foil such as an aluminum foil, a metal vapor-deposited layer, an inorganic vapor-deposited layer such as ceramic, an ethylene-vinyl alcohol copolymer film, or the like may be laminated in order to improve the barrier property against gas or ultraviolet rays.

The size of the bag is not particularly limited. For example, the height of the bag is about 100 to 500 mm, and the width of the bag (maximum width between both side edges) is about 70 to 300 mm. The amount is about 100 to 5000 cm ³ .

  In the upper part of the packaging bag 10, the space between the side edge seal parts 11 a and 11 b is opened as a filling port, and the contents (liquid, solid, or mixture) are filled into the packaging bag 10 through the upper opening part 13. Is possible. In addition, after filling with the contents, the upper seal portion 13 </ b> A (see FIG. 3) is formed by heat-sealing the body film 11, 11 at the periphery of the upper opening portion 13, and the upper opening portion 13 is closed. Thereby, the flat bag type packaging bag 10A shown in FIG. 3 is obtained.

In order to open the packaging bags 10 and 10A filled with the contents (not shown), by using the half-cut groove 15a or the notch 15b of the easy-opening portion 15, the extension portion without using tools such as scissors 14 can be opened easily.
When the extended portion 14 is opened, the bottom member 12 folded inward by the fold line 12a can be spread to provide self-supporting property. And since the bottom member 12 consists of a plastic mesh, it can permeate | transmit a liquid from the bottom part of a bag in the self-supporting state, and can isolate | separate with a solid. Moreover, in order to open the upper part easily, the easy opening part (not shown) which consists of opening auxiliary | assistance lines, such as a half cut groove | channel, opening opening means, such as a notch, is provided in the packaging bag 10A which sealed the upper part. Is preferred.

  There are no particular limitations on the types and uses of the contents to which the packaging bags 10 and 10A of the present embodiment can be applied, but (1) a solid and liquid filled in a mixed state, (2) There are various modes such as a case where a solid is filled and a liquid is added at the time of use, and (3) a case where a liquid is filled and a solid is added at the time of use.

(1) The content in which the solid and the liquid are filled in a mixed state is not particularly limited, and examples thereof include foods, industrial products, medical supplies, and cosmetics. Examples of food include boiled water (maiko, bamboo shoots, konjac, wild vegetables, menma (sina bamboo), etc.), pickles (ginger, Chinese cabbage, eggplant, cucumbers, etc.), and processed products (boiled eggs, etc.). It is done. In the case of these contents, after the bottom extended portion 14 is opened and unnecessary liquid is discharged from the plastic mesh 12 of the bottom member, the separated solid can be taken out from the upper opening 13.

(2) Contents to be filled with solid and liquid to be added at the time of use are not particularly limited. For example, solid detergent for dishwashers, dried foods (salted wakame, vermicelli, kanpyo, bonito, tea leaves) Etc.), vegetables and fruits (sprouts, cut vegetables, cherries, mushrooms, etc.), noodles (dry noodles such as pasta, buckwheat noodles, raw noodles, Chinese noodles, instant noodles, frozen noodles, etc.), meat, seafood, laundry detergent And soap. In the case of these contents, after opening the extended portion 14 at the bottom and supplying liquid such as hot water from the outside to the inside of the bag through the plastic mesh 12, unnecessary liquid is discharged or the upper opening of the bag After the liquid is supplied from 13, the extended portion 14 at the bottom is opened, and unnecessary liquid can be discharged from the plastic mesh 12. Thereby, draining can be performed without preparing a colander or a ball.

When foods that require cooking such as noodles and vegetables are used as the contents, the bag can be boiled in the pan with the bottom of the packaging bag of this embodiment opened. In this case, after cooking, hot water can be drained from the plastic mesh 12 of the bottom member by removing the bag as it is from the pan.
In the case of dry foods or instant noodles, hot water can be poured into the container for cooking (hot water reconstitution).
It can also be used for draining when the noodles are boiled using a pan or microwave oven and then cooled by passing through cold water or running tap water.

  Further, when the contents such as a desiccant, a humectant, and a hygroscopic agent are used as contents, the plastic mesh of the bottom member 12 can be used to discharge the water accumulated during the use of the packaging bag of this embodiment. .

(3) Contents to be filled with liquid and solids added at the time of use are not particularly limited. For example, seasoning liquid (pickled soup for pickles such as shallow pickles and kimchi), cleaning liquid, dye liquid And various treatment liquids. In the case of these contents, after the solid material is charged from the upper opening 13 of the packaging bag 10, 10 </ b> A according to the present embodiment, the bottom extending portion 14 is opened to remove unnecessary liquid from the plastic mesh of the bottom member 12. Can be discharged.

  FIG. 4 shows a packaging bag 10B according to a second embodiment of the present invention. The packaging bag 10B is formed by folding a plastic mesh 12 folded in half and a film 16 folded in half between a pair of trunk films 11, 11 having the same planar shape. The body film 11 is extended beyond the seal part 12b with the plastic mesh 12, and the body films 11 and 11 are sealed with each other in the extended part 14. .

  In the case of the packaging bag 10B having such a configuration, when the extended portion 14 is opened at the time of use, the liquid can be easily permeated from the plastic mesh of the bottom member 12 to be separated from the solid. Further, the capacity can be increased by expanding the bi-fold film 16, and self-supporting property can be imparted by using the expanded bi-fold film 16 as the bottom when not in use, that is, before opening the extended portion.

  FIG. 5 shows a packaging bag 10C according to a third embodiment of the present invention. This packaging bag 10C has a plastic chuck 17 attached to the upper opening 13 of the packaging bag 10 shown in FIG. As the plastic chuck 17, when a fitting part is formed on a belt-like sheet (tape) 17 a and opposed to each other between the pair of body films 11, 11, the original film of the body film 11 is It is preferable because a separate chuck can be prepared and fixed to the inner surface of the film 11 with a seal or the like.

  In the case of the packaging bag 10 </ b> C having such a configuration, when the extended portion 14 is opened at the time of use, the liquid can be easily permeated from the plastic mesh of the bottom member 12 to be separated from the solid. Moreover, after opening the upper opening part 13, it can be easily resealed. When the contents include liquid, a heat seal or an easy peel seal (not shown) is provided outside or inside the chuck 17 in order to prevent leakage of the liquid from the upper opening 13 even if the chuck 17 is detached. Is preferably provided in a strip shape over the entire width of the packaging bag 10C (between the side edge seal portion 11a and the side edge seal portion 11b).

As mentioned above, although this invention has been demonstrated based on suitable embodiment, this invention is not limited to the above-mentioned example, Various modifications are possible in the range which does not deviate from the summary of this invention.
The form of the packaging bag in the present invention is not particularly limited, and can be applied to various packaging bags such as a flat bag such as a three-side seal and a four-side seal, a self-standing bag such as a standing pouch and a square bottom bag, and a gusset bag. It is.
The contents after filling the packaging bag can be sterilized with a boil or a retort.

10, 10A, 10B, 10C ... packaging bag, 11 ... film (body member), 11a, 11b ... side edge seal part, 12 ... plastic mesh (bottom member), 12a ... folding line, 12b ... seal part, 12c ... diagonally Seal part, 13 ... Upper opening part, 13A ... Upper seal part, 14 ... Extension part, 14a ... Sealing seal part, 15 ... Easy opening part, 15a ... Half cut groove, 15b ... Notch, 16 ... Folded film, 16a ... folding line, 16b ... seal part, 17 ... chuck, 17a ... belt-like sheet (tape).

Claims (3)

  A bottom member made of a plastic mesh folded inward by a fold line is sandwiched between a pair of films, and the periphery of the plastic mesh is sealed to one or both of the pair of films. The packaging bag is characterized in that the plastic mesh extends on the side opposite to the fold line, and the pair of films are sealed in the extended portion.   The packaging bag according to claim 1, wherein the pair of films includes an easy-opening portion in the extending portion.   The packaging bag according to claim 1, further comprising an oblique seal portion from both ends of the fold line toward a seal portion between the pair of films on the side opposite to the fold line.

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