JPH1159702A - Pouch with spout - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent damage or breakage of a bag when it is dropped or stacked for keeping after it has been filled with the contents and completely take out the contents, by providing an extensible material which is flexible and deformable together with the bag body, in the bag body. SOLUTION: This spout 2 is constituted of a mouth metal block composed of a flange 4 and a mouth metal base 5, an extensible material 6 which is flexible and deformable together with the bag body and stretched in the bag body, and a plug body 7. The extensible material 6 is made of a plate which is bendable at the narrow parts 9 and deformable together with the flexible bag body. A pair of projections 10 are formed at the wide parts of the plate. In this way, the pouch can be prevented from being damaged or breakage when it is dropped or stacked for keeping after it has been filled with a beverage. And also the PP films of inner layer are prevented from closely sticking to each other when the beverage is poured. And even when the contents are almost little, the spout functions as a straw tube to easily and completely extract the contents.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a pouch with a spout used for beverages, seasonings, cosmetics, liquid detergents, etc., which is inexpensive to manufacture and easy to take out the contents.

[0002]

2. Description of the Related Art As a packaging bag used for beverages, seasonings, cosmetics, liquid detergents, etc., there is a packaging bag with a spout attached to an opening of a packaging bag body formed by heat-sealing a plastic film. Are known. In such a packaging bag, there is a problem that it becomes difficult to take out the contents to the end because the bags are bent when the amount of the contents is reduced or the inner layer is in close contact.
In order to solve such a problem, as shown in FIG. 5, the spout 2 fixed to the opening of the bag body 1 is extended to the inside of the bag body to form the conduit 13 and the bag body of the conduit 13 is formed. An opening 14 is provided near the opening seal part.
JP-A-1-137539), or a device in which an opening is formed over almost the entirety of a conduit extending to the inside of a bag body (Japanese Utility Model Laid-Open No. 63-76653), and a plate-like rib is extended inside the bag body. Installed (registered utility model No. 3038
No. 175) has been proposed.

[0003]

However, such a bag body in which a conduit or a plate-like rib is extended in such a bag body,
Due to the rigidity of the conduits and ribs, there is a problem that the bags are dropped after the contents are filled, or the bags are damaged or damaged when the bags are stacked and stored.

Accordingly, it is an object of the present invention to provide a method for storing bags by dropping bags after filling the contents or stacking bags.
An object of the present invention is to provide a pouch with a spout that can prevent the bag from being damaged or damaged and can easily take out the contents to the end.

[0005]

According to the present invention, in a packaging bag comprising a packaging bag body formed by heat-sealing a plastic film and a spout fixed to an opening of the bag body, the spout extends inside the bag. By providing a flexible and deformable extension together with the bag body,
An object of the present invention is to solve the above-mentioned problems of the prior art and to obtain a desired pouch with a spout.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The plastic film used for the packaging bag of the present invention is not particularly limited, and any plastic film usually used for a packaging bag can be used. Examples of a plastic material suitable for constituting a plastic film include crystalline polypropylene, crystalline propylene-ethylene copolymer, crystalline polybutene-1, crystalline poly-4-methylpentene-1, low-, medium-, Alternatively, high-density polyethylene, ethylene-vinyl acetate copolymer (EV
A), ethylene-ethyl acrylate copolymer (EE
A), ion-crosslinked olefin copolymer (ionomer)
Polyolefins such as polystyrene and styrene-butadiene copolymer; aromatic vinyl copolymers such as polyvinyl chloride and vinylidene chloride resin; acrylonitrile-styrene copolymer; acrylonitrile-styrene-butadiene copolymer Nitrile polymers such as polymers; polyamides such as nylon 6, nylon 66, para- or meta-xylylene adipamide; polyesters such as polyethylene terephthalate and polytetramethylene terephthalate; various polycarbonates; polyacetals such as polyoxymethylene Thermoplastic resin. Films made of these plastic materials are used as unstretched or uniaxially or biaxially stretched films.

[0007] The plastic film used in the packaging bag of the present invention can be constituted by a single layer of these plastic films or by laminating two or more of them, and one or two of these plastic films can be used. A metal foil such as aluminum or the like, paper, cellophane, or the like may be bonded to the above. Preferred plastic films are, for example, those having a two-layer structure in which a stretched nylon film is used as an outer layer and a polyolefin film such as low-density polyethylene or polypropylene (PP) as an inner layer, or a drawn polyester film as an outer layer and a polyolefin film as an inner layer. Examples thereof include those having a layered structure, and among these, those having a three-layered structure in which a metal foil such as aluminum is laminated between outer films. In the case of a packaging bag that is sterilized by heating after filling the contents, such as beverages and retort foods, for example, polyethylene terephthalate (PET)
It is preferable to use a multilayer film having a film as an outer layer, a nylon film layer and an aluminum foil layer provided inside, and a PP film or a linear low density polyethylene (LLDPE) film as an inner layer. When manufacturing these laminated films, an anchoring agent may be interposed between the layers as necessary.

Whether the plastic film is made into a single layer or what kind of layer structure may be selected according to the properties of the contents to be filled in the packaging bag. When low cost is required, use a two-layer laminated film, and when filling contents that require preservation, such as beverages, seasonings, and retort foods, use aluminum foil. What is necessary is just to use the laminated film of more than layers.

Hereinafter, the features of the packaging bag of the present invention will be further described with reference to the drawings. FIG. 1 is a partially sectional perspective view showing an example of a pouch with a spout of the present invention, and FIGS. 2 to 4 are enlarged views of a spout used in the present invention. 2 to 4, (A) is a front view of each spout, (B) is a side view of each spout, and (C) is a view of each spout viewed from above. 2D is a sectional view taken along line AA of FIG. 2A, and FIG. 3D is a sectional view taken along line BB of FIG. FIG. 5 is a partially sectional perspective view showing a conventional pouch with a spout. In these figures, reference numeral 1 denotes a packaging bag, reference numeral 2 denotes a spout constituting a spout, reference numeral 3 denotes a spout base portion, reference numeral 4 denotes a flange, reference numeral 5 denotes a base portion, reference numeral 6 denotes an extending portion, and reference numeral 7 denotes a spout. Represents a plug.

In the packaging bag of the present invention, a spout 2 constituting a spout is provided above the bag 1, and this spout 2 can be provided at a central portion above the bag as shown in FIG. It can be provided at any position such as a corner above the bag. In the present invention, the spout adhered to the opening of the bag body is made of a polyolefin resin such as polyethylene or polypropylene, a polyester resin, or a synthetic resin such as a polyamide resin, and the contents to be filled in the bag are retort foods. In that case, it is preferable to use polyolefins, especially polypropylene.

The spout 2 has a base 3 composed of a flange 4 and a base 5 fixed to the opening of the bag body, and a flexible part formed integrally with the base part 3 and extending inside the bag. It is composed of a deformable extension 6 and a plug 7 formed separately from the base 3. This extension 6
2 and 3, as shown in FIGS. 2 and 3, the wide-width portion 8 and the narrow-width portion 9 are alternately formed in a plate-like body so that the narrow-width portion 9 can be bent to have flexibility. It can be deformable with the body. By providing a pair of opposing convex portions 10 on each wide portion 8 of the plate-like body, even if the contents are reduced during drinking, the plastic films constituting the bag body can adhere to each other. In addition, the spout 2 can be provided with a straw function without impairing the flexibility of the extending portion, and the contents can be easily poured out. As shown in FIGS. 2 and 3B, the protrusions 10 can be provided on both sides of the plate-like body, or may be provided on only one side of the plate-like body.

As shown in FIG. 4, the extending portion 6 of the spout may be constituted by a bar-shaped body 11 having a spiral projection 12 formed thereon. In this case, it is necessary to reduce the thickness of the rod-shaped body 11 in order to make the extending portion 6 flexible so as to be deformable together with the bag body. The extending portion 6 has a straw function by forming the spiral convex portion 12 so that the contents can be easily poured out. The size and shape of the spout may be appropriately set according to the type of the content to be filled and the size of the packaging bag. The spout is fixed to the opening of the bag body by heat sealing at the mouthpiece base 5 to make a bag.

The shape of the packaging bag of the present invention is not particularly limited, and examples thereof include a three-sided or four-sided sealed flat bag, a gusset bag, and a standing pouch. The contents to be filled in the packaging bag include liquid beverages, seasonings, retort foods, cosmetics and detergents, etc., as well as dry powdery and granular seasonings, foods, cosmetics and detergents, and the like. Can be

[0014]

Next, the present invention will be described with reference to examples.
These examples do not limit the invention. (Example 1) A biaxially stretched PET film having a thickness of 12 μ as an outer layer when forming a bag, a nylon film having a thickness of 15 μ as an intermediate layer, and a PP film having a thickness of 70 μ as an inner layer were coated with a urethane anchor agent between each layer. The laminated film was used as a packaging material. When the packaging material was heat-sealed by a bag making machine, the polypropylene spout 2 shown in FIG. 2 was attached to produce the beverage pouch of FIG. The spout 2 has a length of 70 mm, a width of the wide portion 8 of 6 mm, a width of the narrow portion 9 of 4 mm, a thickness of 1 mm, and a portion provided with the protrusion 10 having a thickness of 3 mm. Length 3
mm, and an extension 6 having an interval of 3 mm between adjacent convex portions in the vertical direction.

The pouch can prevent the inner PP film from sticking when the beverage is poured out by the extending portion 6 of the spout 2. Further, when the body of the bag body is bent, the extending portion 6 of the spout 2 can be bent in accordance with the deformation of the body at the narrow portion 9, so that the pouch can be dropped after filling the beverage, When stacking and storing pouches,
The pouch can be prevented from being damaged or damaged. Furthermore, since the extending portion 6 of the spout 2 has a straw function by providing the convex portion 10, the beverage inside can be stably poured out to the end.

(Example 2) A film having a thickness of 7 μm was placed between a nylon film and a PP film via a urethane-based anchoring agent.
The laminated film having the same layer configuration as the laminated film of Example 1 was used as a packaging material except that the aluminum foil was interposed. Spout 2 made of polypropylene shown in FIG.
Was used to obtain the pouch for beverage of FIG. 1 in the same process as in Example 1. The spout 2 has a length of 70 mm, a width of the wide portion 8 of 6 mm, a width of the narrow portion 9 of 3 mm, and a thickness of 1 m.
m, the thickness of the portion where the protrusions 10 are provided is 3 mm, the length of each protrusion is 4 mm, and the interval between vertically adjacent protrusions is 3 mm.
Is provided. This pouch, like the pouch of Example 1, can prevent the pouch from being damaged or damaged when the pouch is dropped after filling the beverage or when the pouch is stacked and stored. It was possible to stably pour out until the end.

Example 3 A laminated film having the same layer structure as the laminated film of Example 2 was used as a packaging material, except that a linear low-density polyethylene (LLDPE) film having a thickness of 130 μm was used as the inner layer. LL shown in FIG.
Using the spout 2 made of DPE, the pouch for beverage of FIG. 1 was obtained in the same process as in Example 1. The spout 2 has a length of 70 mm, a rod-shaped body 11 having a diameter of 1.5 mm, and a spiral projection having a diameter of 4 mm. This pouch, like the pouch of Example 1, can prevent the pouch from being damaged or damaged when the pouch is dropped after filling the beverage or when the pouch is stacked and stored, and the internal beverage can be removed. Until the end, it could be poured stably.

The thickness, type, combination, and the like of each of the films constituting the plastic film used as the packaging material of the packaging bag of the present invention can be widely selected according to the properties of the desired contents. It goes without saying that the present invention is not limited to those described in the respective embodiments.

[0019]

According to the present invention, in a packaging bag body formed by heat-sealing a plastic film and a pouch with a spout fixed to an opening of the bag body, the spout can be extended inside the bag. By providing a flexible and deformable extension together with the bag body, it is possible to prevent the bag from being damaged or damaged when the bag is dropped after filling the contents or when the bags are stacked and stored. . Moreover, the pouch with a spout of the present invention can easily take out the contents to the end, and is of extremely high practical value.

[Brief description of the drawings]

FIG. 1 is a partially sectional perspective view showing an example of a pouch with a spout of the present invention.

FIG. 2 is a view showing one example of a spout attached to a pouch with a spout of the present invention.

FIG. 3 is a view showing another example of a spout attached to the pouch with a spout of the present invention.

FIG. 4 is a view showing another example of the spout attached to the pouch with the spout of the present invention.

FIG. 5 is a partially sectional perspective view showing a conventional pouch with a spout.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Spout 3 Spout base 4 Flange 5 Base 6 Extension 7 Plug 8 Wide part 9 Narrow part 10 Convex part 11 Bar-shaped body 12 Spiral convex part 13 Conduit 14 Opening

Claims (4)

[Claims] 1. A pouch with a spout comprising a packaging bag body formed by heat-sealing a plastic film and a spout fixed to an opening of the bag body. A pouch with a spout, comprising a deformable extending portion together with a main body. 2. The pouch with a spout according to claim 1, wherein the extending portion is a plate-like body in which a wide portion and a narrow portion are alternately formed. 3. The pouch with a spout according to claim 2, wherein a pair of convex portions facing each wide portion are provided. 4. The pouch with a spout according to claim 1, wherein the extending portion is formed by forming a spiral convex portion on the rod-shaped body.