JP2001058653A - Packaging body with zipper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging body with a zipper advantageous in production cost and inventory control and easy to reseal. SOLUTION: This relates to a packaging body 1. The inner faces of two compound films whose innermost layer is made of a sealant layer 12 are fitted, right and left edges and top and bottom edges arc heat sealed, and with an interval for an intended cut off area 26 at the bottom of a top edge heat seal part 22, an adhesive tape 30 having on its inner face an adhesive layer 34 and comprising a base material 32 and the adhesive layer 34 is heat sealed on the inner face of one side or the inner face of both sides of the films. In this case, the adhesive layer 34 is a urethane adhesive agent and the base material 32 is polypropylene resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resealable zipper-containing package containing foods or cataplasms.

[0002]

2. Description of the Related Art Conventionally, for example, as a packaging bag that contains a haptic agent (sheet) and needs to be resealed after each use,
It is known that a zipper is provided in the opening, and as shown in the schematic cross-sectional view of FIG.
There is a so-called poly zipper (or linear zipper) (60) having a female tape (62) on one inner surface and a male tape (64) on the other inner surface. Are also used as resealable packages.

[0003]

However, the conventional polychuck requires two types of tapes, a female tape (62) and a male tape (64), so that it is difficult to control the manufacturing cost and the stock amount. was there. Also, when resealing the package, it is difficult to fit the irregularities of the male tape (64) and the female tape (62), especially when the packaging material is thin, and it is difficult to seal. Had the drawback of becoming

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a zippered package which is superior in management of production cost and inventory and is easy to reseal. It is in.

[0005]

In order to achieve the above-mentioned object in the present invention, first, in the invention of claim 1, an adhesive tape having an adhesive as an inner surface is adhered to the inner surface of the upper edge opening. And a zipper-equipped package.

According to a second aspect of the present invention, there is provided the package with a zipper according to the first aspect, wherein an area to be cut is provided at an upper edge of the adhesive tape.

According to a third aspect of the present invention, the pressure-sensitive adhesive tape comprises a substrate and a pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer is formed of a urethane-based pressure-sensitive adhesive, and the substrate is formed of a polypropylene resin. A package with a zipper according to claim 1 or 2.

[0008]

Embodiments of the present invention will be described below. As shown in the front view of FIG. 1, for example, as shown in the front view of FIG. 1, two sheets of square film are joined on the inner surface, and heat seal portions (22) are provided on the left and right edges and the lower edge. A package with a zipper (1) in which an adhesive tape (30) is heat-sealed on the inner surface of the part (24).

The opening of the zipper package (1) can be easily opened by hand at the opening (24) with the adhesive tape (30). The tape (30) can be easily sealed only by pressing from above.

Further, for example, as shown in the front view of FIG.
The two rectangular films are joined together on the inner surface, heat seal portions (22) are provided on the left and right edges and the upper and lower edges, and the lower portion of the heat seal portion (22) on the upper edge is cut into the area to be cut (2).
In 6), a zippered package (1) in which an adhesive tape (30) is heat-sealed on the lower inner surface can also be used.

The zipper-equipped package (1) can be opened by cutting an area (26) to be cut between the upper edge sealing portion (22) and the adhesive tape (30) attachment portion with scissors or the like. Alternatively, a half-cut (not shown) using a laser or a rotary blade provided in the cut-scheduled area (26) can be cut with a finger, and the adhesive tape (30) can be easily opened by hand. (1) Resealing, adhesive tape (30)
The part can be easily sealed only by pressing from above.

The sticking of the adhesive tape (30) by heat sealing is performed by, for example, a zipper package (1) shown in FIG.
As shown in FIG. 3 as a BB cross-sectional view of FIG. 3, an adhesive tape (30) composed of a base material (32) and an adhesive layer (34) is adhered to one inner surface of two composite films (10). Layer (3
Heat-sealed with 4) as the inner surface.

The adhesive tape (30) is attached by heat sealing, for example, as shown in FIG. 4 as a BB sectional view of the package (1) with zipper shown in FIG. The heat seal is performed with the adhesive layer (34) as the inner surface so that the two adhesive tapes (30) coincide with the inner surface on both sides of (10).

That is, even if one adhesive tape (30) as shown in FIG. 3 is used, two adhesive tapes (3) as shown in FIG.
0) may be used. In particular, in the case of resealing in the case of one piece, the sealing can be easily performed only by pressing from above without much relation to the slippage of the adhesive. Even in the case of two pieces, the width of the adhesive tape (30) can be easily sealed. If they match, sealing can be easily performed even if there is a slight shift.

As shown in FIG. 5, the position where the pressure-sensitive adhesive tape (30) is adhered is the heat seal portion (2) on the left and right edges.
It can also be applied to the part 2). By sticking the adhesive tape (30) at this position, the contents can be completely sealed, and the films can be heat-sealed.

The square film may be a single-layer polyethylene film having excellent heat-sealing properties or, as shown in FIG. 3, a composite film (10) in which the innermost layer is a sealant layer (12). (12)
Is a polyethylene-based film made of low-density polyethylene, medium-density polyethylene or high-density polyethylene resin, or a non-oriented polypropylene film.

According to a third aspect of the present invention, as shown in FIG. 3, the adhesive tape (30) is composed of a base material (32) and an adhesive layer (34), and the adhesive layer (34) is made of urethane. The base material (32) is formed of a polypropylene resin.

As described above, the adhesive layer (34) is first made of a urethane-based adhesive, so that when the package (1) is resealed, the package (1) with a zipper having the configuration shown in FIG. Having an adhesive (sealing) effect between the adhesive layers (34) of
Alternatively, the adhesive layer (34) and the sealant layer (12) of the composite film (10) have an adhesive (sealing) effect in the case of the package with a zipper having the configuration shown in FIG. 3, and can be easily resealed. However, at the stage of heat-sealing the adhesive tape (30), the adhesive layers (34) may be mutually bonded or the adhesive layer (34).
And the sealant layer (12) are adhered to each other to make opening difficult. That is, the urethane-based adhesive does not cause a change in the adhesive (sealing) effect in the heat sealing step of the adhesive tape (30), and the heat of the adhesive tape (30) is not used in other rubber-based adhesives and acrylic-based adhesives. In the sealing step, the adhesive layers (30) are completely adhered to each other or to the sealant layer (12), so that opening is impossible.

Further, by using a heat-sealable polypropylene resin, particularly a non-stretched polypropylene film, for the base material (32) constituting the pressure-sensitive adhesive tape (30), the heat-sealing step of the pressure-sensitive adhesive tape (30) can be achieved. The adhesive tape (30) is sealed flat without curling inside. For example, as shown in the schematic side sectional view of FIG. 6, when a polyethylene film is used for the substrate (32), a square film (single-layer or composite film)
Although it has good heat sealability with (50) and good sealing, it has a problem that it is curled inward due to poor heat resistance and loses the adhesive (sealing) effect. Therefore, a polypropylene resin having both heat resistance and heat sealing properties, particularly a non-stretched polypropylene film, is used as the base material (3) of the adhesive tape (30).
It is suitable as 2).

The production of the pressure-sensitive adhesive tape (30) has a thickness of 5
A non-solvent type solvent such as polyol or polyoxyalkylated diol is applied to a wide substrate (32) made of a non-stretched polypropylene film having a thickness of up to 30 μm, for example, silfan (manufactured by Gunze Co., Ltd.) by knife coating or reverse roll coating. A urethane-based adhesive is applied and cured to a thickness of about 4 μm, and then slit into a width of about 7 mm. It can be easily manufactured in large quantities, and since there is only one type, inventory management is easy. Adhesive tape (3
0).

The package with a zipper having the above structure is as follows.
It can be suitably used as a packaging bag for a haptic agent (cooling / heating shipping agent or the like) provided with a reseal function, a packaging bag for foods or clothing.

The example of the shape of the package with a zipper according to the present invention has been described as a four-sided seal bag, but is not limited thereto.
A three-side seal bag may be used in which one composite film (10) having a sealant layer (12) on the inner surface is folded back at the lower edge to seal the left and right edges and the upper edge. Also, an adhesive tape (30) is adhered to the inner surface of the upper edge opening of the three-side seal bag, or an adhesive tape (30) is adhered to the inner surface of the lower edge to be cut between the lower edge and the adhesive tape (30). A structure in which the region (26) is provided may be employed.

[0023]

As described above, the present invention has the following effects. That is, the inner surface of the upper edge opening portion is adhered with an adhesive tape having an adhesive as an inner surface, and a package with a zipper is provided in which an area to be cut is provided on the upper edge of the adhesive tape, and particularly, this packaging is used. The resealing of the body can be easily performed only by pressing, and the sealing can be easily performed even with two adhesive tapes even if there is a slight shift.

Further, since the pressure-sensitive adhesive tape has a pressure-sensitive adhesive layer formed of a urethane-based pressure-sensitive adhesive and a base material of a polypropylene resin, the heat-sealed pressure-sensitive adhesive tape has no distortion or the like. And a zippered package that is easy to open without adhering to the inner surface of the packaging film.

The pressure-sensitive adhesive tape having the above functions is
Compared to conventional poly chucks, it is superior in manufacturing cost, and because there is only one type, it is easy to manage inventory, etc., and because it is a thin tape, it is also superior in transportation cost and storage space, etc. As a result, with zipper that contributes to cost reduction It can be a package.

Therefore, the present invention exerts an excellent practical effect in uses such as a zipper-containing package for accommodating a cataplasm, food, clothing and the like.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a front view of one embodiment of a package with a zipper of the present invention.

FIG. 2 is an explanatory view showing another embodiment of the package with a zipper of the present invention in a front view.

FIG. 3 is an explanatory view schematically showing an outline of an embodiment of the package with a zipper of the present invention in a BB section.

FIG. 4 is an explanatory view schematically showing another embodiment of the package with a zipper of the present invention in a BB section.

FIG. 5 is an explanatory view showing an embodiment of the package with a zipper of the present invention in a front view.

FIG. 6 is a schematic side sectional view illustrating an example of a heat-sealed state of an adhesive tape according to the package with a zipper of the present invention.

FIG. 7 is a schematic side sectional view illustrating an example of a conventional package with a zipper.

[Description of Signs] 1 {Package with zipper 10} Composite film 12} Sealant layer 22 {Heat seal part 24} Opening 26} Area to be cut 30} Adhesive tape 32} Base material 34 ‥‥ Adhesive layer 50 ‥‥ Heat-sealing film 60 ‥‥ Polychuck 62 ‥‥ Female tape 64 ‥‥ Male tape

Claims (3)

[Claims] 1. A package with a zipper, wherein an adhesive tape having an adhesive as an inner surface is adhered to an inner surface of the upper edge opening. 2. A package with a zipper according to claim 1, wherein an area to be cut is provided on an upper edge of said adhesive tape. 3. The pressure-sensitive adhesive tape according to claim 1, wherein the pressure-sensitive adhesive tape is composed of a substrate and a pressure-sensitive adhesive layer, the pressure-sensitive adhesive layer being formed of a urethane-based pressure-sensitive adhesive, and the substrate being formed of a polypropylene resin. Zipper package.