JP2000318752A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refilling packaging bag which is adaptable not only to the liquid but also powder and a granular material, excellent in pouring functionality, improved in openability in unsealing a spout and pouring property, and low in manufacturing cost. SOLUTION: In the packaging bag formed of a synthetic resin film having a bottom seal portion 11 and two side seal portions 12, 12, a top seal portion is formed orthogonal to the bottom seal portion by expanding two front and rear synthetic resin films so that two side seal portions are brought into contact with each other. The top seal portion 13 is formed so that one corner angle 14 is projected upward, and the corner angle 14 is diagonally cut to form a spout 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag provided with a spout for facilitating pouring of contents, and more particularly to a liquid bag having a high viscosity such as liquids, powders, granules and the like. The present invention relates to a packaging bag for storing articles that can be poured out from an outlet and suitable for refilling.

[0002]

2. Description of the Related Art Conventionally, pump-type containers that discharge a suitable amount of liquid such as shampoo and dishwashing detergent with a pump have been frequently used. And in recent years, even if the contents of the pump-type container are exhausted due to resource saving, the contents filled in the packing bag dedicated for refilling are refilled into empty pump-type containers without discarding the container, It has been practiced to reuse the pump-type container many times.

[0005] As a packaging bag for storing the liquid for refilling, for example, as shown in FIG. A seal 51 is formed on the periphery of the front and back synthetic resin films as shown in FIG. 6, and a part of the periphery is provided between the front and back synthetic resin films. A packaging bag or the like in which a hollow cylindrical plug body 56 made of synthetic resin is buried and provided with a protruding pouring portion is used.

In the former packaging bag, since the packaging bag is swelled by the liquid at the time of pouring, a force in a direction in which the spout passage is pulled and closed acts, so that the inner surfaces of the spout passages come into close contact with each other and the spout. Since the passage tends to be easily blocked, it is difficult to discharge the liquid, and if the liquid is not pressed and squeezed continuously, the liquid cannot be efficiently discharged.If the remaining amount is small, it is difficult to discharge the liquid from the packaging bag. There is a problem in the pouring function, such as a large amount of residual liquid adhering to the packaging bag and waste of contents.

[0005] In the latter packaging bag, although the above-mentioned pouring function is improved, a molded product made of a synthetic resin is attached to a soft synthetic resin film. Must be adjusted to an appropriate diameter,
Problems such as labor, cost, and shape restrictions remain.

[0006] Recently, a method of performing three-dimensional molding at a place to be a spout passage of a soft synthetic resin film has been studied. However, this method also requires a molding step, which is a problem from the viewpoint of productivity. Is mentioned.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned problems relating to refill packaging bags, and has been made in consideration of liquids (body soaps, shampoos, fabric softeners, kitchen detergents, sauces, etc.). ) As well as powder (soap powder, bleaching powder, etc.) and granules, with good pouring function, improving the openability and ease of pouring when opening the spout, and An object of the present invention is to provide a refillable packaging bag which is inexpensive to manufacture.

[0008]

Means for Solving the Problems A first invention of the present invention is:
In the packaging bag made of a synthetic resin film having a bottom seal portion and two side seal portions, the front and back two synthetic resin films are pushed out so that the two side seal portions contact each other, and are orthogonal to the bottom seal portion. A packaging bag having a top seal portion formed thereon, wherein the top seal portion is formed such that one corner protrudes upward, and the corner is cut obliquely to form a spout. A packaging bag characterized by the above.

In a second aspect of the present invention, there is provided a packaging bag made of a synthetic resin film having a bottom seal portion and two side seal portions, wherein the two side seal portions are in contact with each other so that the two side seal portions contact each other. A packaging bag in which a film is pushed out to form a top seal portion orthogonal to the bottom seal portion, wherein the top seal portion is provided with a concave portion between one corner and a center side seal portion. A packaging bag characterized in that the packaging bag is formed and the corner is cut obliquely to form a spout.

A third aspect of the present invention is the packaging bag according to the first or second aspect, wherein a fold line is formed downward from an edge of the top seal portion of the packaging bag.

A fourth aspect of the present invention is a packaging bag according to any one of the first to third aspects, wherein the shape of the packaging bag is a standing pouch.

As described above, according to the present invention, the top seal portion is formed such that one corner protrudes upward, and the corner is cut obliquely to form a spout. Since the corner has a spout shape and one side is not sealed, the spout is opened when the contents are poured out, so that the contents can be easily poured.

Further, the top seal portion is formed so as to provide a concave portion between one corner and the central side seal portion, and the corner is cut obliquely to form a spout. A recess is formed in the vicinity, and the spout is opened when the contents are poured out, so that the contents can be easily poured. Furthermore, when a fold line is formed at the edge of the packaging bag, the fold line serves as a guide line, facilitating the pouring of the contents.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The packaging bag of the present invention is, for example, shown in FIG.
As shown in (a) and (b), two side seal portions 12, 12 of a packaging bag made of a synthetic resin film having a bottom seal portion 11 and two side seal portions 12, 12, come into contact with each other. Is a packaging bag in which a top seal portion 13 is formed orthogonally to a bottom seal portion 11 by pushing and spreading two front and back synthetic resin films, and one corner angle 14 of the top seal portion 13 protrudes upward. The spout 15 is formed by cutting the corner diagonally.

As the synthetic resin film used for the packaging bag, biaxially stretched nylon film (ONy) / linear low density polyethylene (L-LDPE), ONy / aluminum foil (Al) / L-LDPE, polyethylene terephthalate film ( PET) / Al / L-LDPE, PET /
Although a generally known composite film such as Al / ONy / L-LDPE is used, it may be determined by comprehensively considering heat sealing suitability, content resistance, opening property, and the like.

A method for forming the top seal portion 13 is, for example, to fill the contents into a packaging bag prepared by projecting a center portion of one synthetic resin film on the top seal portion side in advance, and then orthogonally intersect the bottom seal. When the top seal is formed,
A top seal portion having one corner protruding upward is formed.

In order to pour out the filled contents, the protruding corner is cut obliquely, and the cut portion becomes a spout so that the contents can be poured out.

Further, the packaging bag of the present invention can be produced by the method described below. That is, for example, as shown in FIG. 2, the two side seal portions 12, 12 of the packaging bag made of a synthetic resin film having the bottom seal portion 11 and the two side seal portions 12, 12, are in contact with each other. Is a packaging bag in which a top seal portion 13 is formed orthogonally to the bottom seal portion 11 by spreading two front and back synthetic resin films. A recess 16 is formed between the portions 12, and the corner is cut obliquely to form a spout 15.

In this case, the top seal is formed by trimming the top edge of the top part symmetrically, for example, into a semi-spherical shape, leaving only the synthetic resin film on either the front or back, leaving both sides and the center part. After preparing a packaging bag having a bottom seal portion and a side seal portion in which the concave portion 16 is formed, filling the contents, and then forming a top seal portion orthogonal to the bottom seal,
A top seal portion in which the corner of the top seal in which the recess 16 is formed protrudes upward is formed.

In order to pour out the filled contents, the protruding corner is cut obliquely, and the cut portion becomes a spout so that the contents can be poured out.

Also, a fold line (not shown) is formed downward from both edges of the top seal portion of the packaging bag having the top seal formed thereon.
Is provided, when the content is poured out from the spout 15 formed by cutting the protruding corner diagonally, the fold line serves as a guide line, and the content can be easily poured out.

Further, when the shape of the packaging bag is formed as a standing pouch, the packaging bag becomes self-supporting, thereby giving displayability.

When the spout is formed by diagonally cutting the corners of the packaging bag, a perforation or the like may be applied to the cut point without using cutting tools such as scissors. Can be cut.

[0024]

EXAMPLES Examples of the present invention will be described below more specifically. <Example 1> A 7 µm-thick Al was dry-laminated on a surface provided with a 12 µm-thick PET print layer provided with a print layer on necessary portions via a two-liquid reaction type polyester adhesive. Separately, ONy having a thickness of 15 μm and L-LDPE having a thickness of 100 μm were dry-laminated via a two-component polyester adhesive. Al of two composite films
Surface and the ONy surface are opposed to each other, and dry-laminated via a two-component reactive type polyester adhesive, and the outer surface is made of PET.
(12 μm) (print layer) / Al (7 μm) / ONy (1
5 [mu] m) / L-LDPE (100 [mu] m) [inner surface] to prepare a synthetic resin film.

From this synthetic resin film, windings for the body member and the bottom member are made, and the contents are set in a filling and sealing machine for making a vertical standing pouch so that the L-LDPEs face each other. A packaging bag of the present invention shown in FIG. 1 and filled with a certain liquid detergent was produced.

When the body member is manufactured, a standing pouch is manufactured by projecting the central portion of one of the synthetic resin films on the top seal portion side symmetrically in advance, and thereafter, the contents are filled and the pouch is perpendicular to the bottom seal. When the top seal is applied, a top seal portion having one corner protruding upward is formed, and when this corner is cut off, it becomes a spout (FIG. 3).
(See (a) and (b)).

When the protruding corner of the packaging bag filled with the liquid detergent is cut obliquely in this manner, the cut portion is opened so that the synthetic resin films repel each other to form a spout. The liquid detergent could be easily transferred and discharged to a container or the like.

<Embodiment 2> The ceiling seal is shown in FIG.
A packaging bag of Example 2 was produced using the same material and filling and sealing machine as in Example 1 except for the shape shown in (b).

When the protruding corner of the packaging bag of Example 2 thus produced is cut obliquely, the cut portion is opened so that the synthetic resin films repel each other and becomes a spout, and the liquid detergent is poured. It could be easily discharged to a transfer container.

[0030]

As described above, according to the present invention, the top seal is performed in the direction orthogonal to the bottom seal, and only one of the corners protrudes from the top seal, so that the seal portion is provided only at one of the openings. A spout having a spout can be produced, and the ease of opening and the ease of pouring can be improved. Further, since a molded product is not required to be attached or a molding step is not required, a relatively inexpensive packaging bag can be manufactured.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a packaging bag according to the present invention. FIG. 1 (a) is an explanatory view showing a state where contents such as a liquid are filled and sealed.
FIG. 2B is an explanatory cross-sectional view taken along line AA ′ of FIG.

FIG. 2 shows another embodiment of the packaging bag of the present invention. FIG. 2 (a) is an explanatory view showing a state where contents such as a liquid are filled and sealed, and FIG. 2 (b) is an AA ′ of (a). FIG.

FIGS. 3A and 3B show an example of a top seal portion. FIG. 3A is an explanatory view of a main part showing a state of a packaging bag before filling with contents such as liquid, and FIG. It is a principal part explanatory view which shows the state which carried out the top seal after filling the contents, such as a liquid.

4A and 4B show another example of a top seal portion, in which FIG. 4A is a main part explanatory view showing a state of a packaging bag before filling with contents such as a liquid, and FIG. 4B is a packaging diagram of FIG. It is a principal part explanatory view which shows the state which filled up the contents, such as a liquid, in the bag and sealed it.

FIG. 5 is an explanatory view showing a conventional example of a packaging bag.

FIG. 6 is an explanatory view showing another conventional example of a packaging bag.

[Explanation of symbols]

 10 ‥‥ Packing bag 11 ‥‥ Bottom seal part 12 ‥‥ Side seal part 13 ‥‥ Top seal part 14 ‥‥ Corner angle 15 ‥‥ Pouring port 16 ‥‥ Recess 51 Seal part 53 ‥‥ Inlet outlet passage 56 ‥ ‥ Mouth plug a ‥‥ Cutting line

Claims (4)

[Claims] 1. A plastic bag comprising a synthetic resin film having a bottom seal portion and two side seal portions, the two front and back synthetic resin films are pushed open so that the two side seal portions contact each other, A packaging bag in which a top seal portion is formed perpendicular to the bottom seal portion, wherein the top seal portion is formed such that one corner protrudes upward, and the corner is cut obliquely and poured. A packaging bag having a mouth formed. 2. A plastic bag comprising a synthetic resin film having a bottom seal portion and two side seal portions, wherein the two front and back synthetic resin films are pushed open so that the two side seal portions contact each other. A packaging bag in which a top seal portion is formed orthogonal to a bottom seal portion, wherein the top seal portion is formed so as to provide a concave portion between one corner and a central side seal portion. Characterized in that the packaging bag is cut obliquely to form a spout. 3. The packaging bag according to claim 1, wherein a fold line is formed downward from both ends of the top seal portion of the packaging bag. 4. A packaging bag according to claim 1, wherein the packaging bag is a standing pouch.