JPH05305956A - Tear-tape zippered bag - Google Patents

Abstract

PURPOSE:To provide a bag capable of being opened easily from its upper surface and filled with a large amount of its contents such as cut pieces of laver by a method wherein the film outward of zipper tab is folded back to form two rows of fold-back faces and a tear tape is fused on the fold-back faces in such a manner that the zipper tabs are covered therewith and both tear tape ends are left unattached to such faces and the tear tape is further fused at right angle to the zipper tabs. CONSTITUTION:The film outward of the zippers provided on a zippered bag 1 is folded back to form two rows of fold-back faces 2. A tear tape 6 having a heat fusible layer on its inner surface is fused on the fold-back faces in such a manner that zipper tabs 4 and 5 are covered therewith and tab parts 8 are formed at both the ends thereof and left unattached thereto. Furthermore, a lateral tear part 10 is formed at right angle to the zippers. At this time, an unattached part 11 having a length of about 8mm is formed between film edge line and the lateral tear part 10. The tab part 8 outward of the lateral tear part 10 is pulled to peel off the tear tape 6 from the end part to open the bag.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to seaweed cut into small pieces,
The present invention relates to a sealed bag with a zipper claw that is suitable for storing wet napkins, foods for refrigerator storage, etc., can be easily opened, and can be filled with a large amount of contents.

[0002]

2. Description of the Related Art Conventionally, in a sealed bag with zipper claws, since the zipper claw portions are located at the vertical or horizontal ends of the bag, it is difficult to make a bag when a large amount of content is filled, and the bag tends to be broken. The gusset bag can be filled with a large amount without difficulty, but in this case, the zipper claw and the gusset folding part must be in different parts, and it was impossible to adopt the gusset folding in the bag with the zipper claw. ..

To provide a gusset folding portion, 1
A vertical fusion section of the book is provided in the center of one side of the bag, and the inner and inner surfaces of the film are fused together, so-called a joint-sealed bag or an envelope in which one edge is overlaid with the other edge. Bags were used.

There is also a tape sticking bag, which serves as a vertical fusion bonding portion, in which both edge portions of the film are brought into contact with each other, and a tape having a heat fusible layer on both sides is heat fused from the back surface.
It is a bag in which both ends orthogonal to the vertical fusion-bonded portion are horizontally fused. The tape sandwiched between the horizontal fusion-bonding parts needs both vertical fusion bonding and horizontal fusion-bonding functions, so that it is necessary to provide heat-fusible layers on both sides.

In the tape-sealed bag, the stress of breaking the bag is not the force for directly peeling off the fusion-bonded portion like the joint-sealed bag, but the displacement stress between the tape and the film, so that the fusion-bonding force is not so large. It has the advantage that there is no fear of bag breakage.

[0006]

However, the greatest advantage of the zipper claw bag is that it can be resealed after opening, and the need for resealing is based on the premise of dispensing. This means that you want to fill a large amount of contents. The inability to provide a gusset fold suitable for filling a large amount of contents in a zipper claw bag prevents the zipper claw bag from exerting its full advantage. Therefore, a bag with a zipper claw provided with a gusset fold has been demanded.

[0007]

An object of the present invention is to solve the above-mentioned problems, and the constitution thereof is a zipper comprising a film having a zipper claw engaged with one surface of a bag and an inner side of which is a heat-fusible layer. A sealed bag with claws, wherein the film on the outside of the zipper claws is folded back to form two rows of folded surfaces, the zipper claw portions of the two rows of folded surfaces are covered, and a fusion bonding layer is provided on the inner surface. The adhesive tape is fused with the unfused knob pieces left at the edges of both ends, and the horizontal fusion-bonded portions orthogonal to the zipper claws are also fused respectively, and gusset folds are applied to both ends of the horizontal fusion-bonded portion. It is characterized by having.

The material of the sealed bag in the present invention is made of various plastic films such as polypropylene, polyester, polyethylene, nylon and the like, or a laminated body of these materials or a laminated body of these materials and other materials and has a low melting point. And a heat-fusible layer such as a low-density polyethylene or an ethylene-vinyl acetate copolymer. Alternatively, if the base material is a heat-meltable film itself such as a polyethylene film or a polypropylene film, the heat-meltable layer is not particularly provided, and a single-layer film may be used.

The form of the bag is a so-called pillow type in which zipper male claws and zipper female claws provided separately at both ends of the film are engaged at approximately the center of one surface of the bag and the both ends are fused together. The film on the outside of the zipper claw is folded back to form a folding surface. Also, a gusset type bag having gusset folds on both sides can be used.
In this case, a large amount of contents can be filled, which is preferable.

Various known methods can be used to provide male and female zipper claws on the film. For example, a method of making a bag using a film in which a male nail and a female nail are fused and wound in advance on the end portion in the length direction of the film, and a tape in which the male nail and the female nail are fused are unwound. There are a method of making a bag while adhering to a film, a method of fusing a bag making machine and a zipper claw fusion machine, and making a bag while fusing a zipper claw to a film.

Prior to bag making, the zipper-sealed bag of the present invention is formed into a tubular shape by engaging male and female zipper claws at both ends of the raw material film, and the films outside the zipper claws are each folded back to form a folding surface. .. Both ends of one folding surface are a zipper claw and a folding surface edge line which is a cutting line of the film, and the width of the folding surface is preferably 15 mm to 30 mm.

A fusion tape is attached on the zipper claws that have been occluded. As the fusing tape, it is preferable to use a tape having a width narrower than the sum of the two folded surfaces. It suffices to provide the heat-fusible layer on one surface, that is, the inner surface from which the zipper claws are projected, but it may be provided on both surfaces.

When fusing the tape, the tape is fused so that the central portion in the length direction of the tape covers the periphery of the zipper claw portion. If the tape width is smaller than the sum of the two folded surfaces,
The tape does not overlap at both ends. Insert a finger from this part to open the package.

This portion may have a deviation for facilitating peeling of both films, and the deviation is 3 to 15 mm, preferably 5 to 10 mm. When using film materials that are easily peeled from each other, there is no problem even if the sum of the two folded surfaces and the tape width match, or the edge line of the tape is outside the edge line of the folded surface. ..

When fusing the tape, the entire surface of the tape is heated without heating, and the both ends have a length of 3 to 15 mm, preferably 5 to 5.
Fuse with 10 mm left. Therefore, one of the fused parts is 3 to 15 mm, preferably 5 to 10 mm, and 6 to 30 m in total.
m, preferably 12 to 20 mm.

Since the remaining portion of the tape that is not fused is floating, a finger is inserted between the tape and the folded surface to form a knob piece that can be pinched. Therefore, when the knob piece is pinched and pulled, the tape is peeled off and the zipper claw is exposed at the center of the bag. Therefore, it is preferable that the tab piece has a width that can be pinched by fingers, that is, 5 to 10 mm.

When the tape is fused, it is preferable not only to leave the knob piece, but also to leave the upper portion of the zipper claw in the central part without fusing in order to avoid the deformation of the zipper claw existing in the central part. Therefore, the shape of the fusing bar is preferably a shape in which there are two parallel protruding surfaces lacking the tab pieces at both ends and the zipper claws in the central portion.

When the zipper claw of the present invention is closed, both ends of the zipper claw are orthogonal to the horizontal fusion-bonded portion, so that it tends to be difficult to occlude. In particular, in a gusset folding bag, when the contents are filled, the bag becomes rectangular, and since both ends of the zipper claw are present on surfaces different from the central part, the tendency that the zipper claw is difficult to bite becomes more remarkable.

In such a case, it is preferable that the nail material is melted at both ends of the bag so as not to have a zipper function. Particularly, in the gusset-folded zipper bag, opening and closing is easy if the region having the zipper function is limited to one plane in the central portion.

In such a bag, after the zipper claws are occluded or tape fusion is performed, only the portion where the opening / closing function of the zipper claws is desired to be lost is intermittently pressed by a high temperature heat bar. Easily obtained.

The horizontal fusion-bonded portion may be provided at the most end portion orthogonal to the zipper claw, but the length between the horizontal fusion-bonded portion and the cutting line of the film, which is pinched with a finger, that is, 4 to 15 mm is left inside. Is preferably fused. Further, it is preferable that a gusset fold is provided on the side portion to perform fusion bonding.

With this fusion, it is easy to pinch the knob piece on the outside of the horizontal fusion bonding portion. Since this portion is close to the end of the vertical fusion bonding portion, the tape itself is a portion that easily peels off, The tape can be easily peeled off from the end portion, and the fusion tape is sequentially peeled from one horizontal fusion bonding portion toward the other horizontal fusion bonding portion.

[0023]

According to the present invention, the outside of the zipper claw of the film is folded back to provide two folding surfaces, and the tape is attached to cover the folding surfaces so that the tape is provided on the outside of the bag. Was successfully located at the center of one side of the bag. As a result, the tape can be peeled off from the outside, and by positioning the zipper claw at the center of one surface of the bag, gusset folds can be provided to increase the inner volume of the bag.

Further, in order to facilitate the unsealing, as the fusing tape, one having a small peel strength can be used. Cover
In the sealed bag, the bag breakage mainly starts from the vertical fusion portion, and when the tape application method of the present invention is used, the stress of the bag breakage acts as a displacement stress. Even if the parts are fused, there is no danger of breaking the bag.

[0025]

1 is a plan view of a surface provided with a zipper claw according to an embodiment of the present invention, FIG. 2 is an end view taken along line ii-ii of FIG. 1, and FIG. 3 is a broken line portion of FIG. FIG. 4 is an enlarged view, and FIG. 4 is a perspective view showing a state in which the zipper is opened and the zipper is opened.

Reference numeral 1 is a zipper bag, and 2 is a folded surface formed by folding the film outside the zipper. There are two folding surfaces 2, one end is a folding line 3 and the other end is a zipper female claw 4 which is occluded, the other end is a folding line 3 and the other end is a zipper male claw 5 which is occluded. Is. The width of each folded surface 2 was 20 mm, and the sum of both folded surfaces was 40 mm.

A fusion tape 6 is provided at the center of the two folded surfaces 2.
Fused. The width of the fusing tape 6 was 30 mm, and 16 mm in the central portion was heat-fused, leaving 7 mm on each edge. Furthermore,
The occlusal zipper nail was left unfused to avoid deformation of the zipper nail.

Reference numeral 7 is a fusion-bonded portion, and reference numeral 8 is a knob piece remaining without being fused. The width between the tape edge line 9 and the folding surface edge line 3 is 5 mm in the present embodiment, which is the folding surface 2
The gap is provided so that the knob piece 8 and the knob piece 8 can be easily separated. 14 is a gusset folding line.

In order to fuse the fusing tape 6, as shown in FIG. 3, the part of the zipper claw that has been engaged is depressed and two pressing surfaces 15 for pushing only the fusing part 7 of the fusing tape are provided. It was pressed by the heat bar 16 having. Only the fused portion 7 was fused, leaving the zipper claw portion at the center and the knob pieces 8 at both ends.

Reference numeral 10 is a horizontal fusion-bonded portion, and in this embodiment, an 8 mm non-fusion-bonded portion 11 was left between the film edge line and the horizontal fusion-bonded portion. The zipper bag of this embodiment is 600-1k
The peel strength was g, and the zipper claws were occluded on the lower surface, so that the bag could be easily opened without fear of breaking the bag. Reference numeral 12 is a heat-fusible layer, and 13 is a base material layer. In order to improve the resealing property of the zipper claw, both ends of the zipper claw that was occluded were melted to form a melted portion 18 and the unsealing property was lost.

When opening, the gripping piece 8 on the outer side of the horizontal fusion-bonding portion 10 is pinched and pulled, so that the peeling strength is relatively small. It has propagated to the other end of the zipper bag 1.
In this way, zipper claws 4 and 5 provided in the center of the bag
Could be exposed. 17 is the contents, as shown in FIG.
Shows a bag containing cut seasoned seaweed.

In the present embodiment, a sufficient non-fusing portion 11 is provided on the outer side of the horizontal fusion-bonding portion 10. However, if the non-fusing portion is too small to be pinched with fingers, or is not present at all, the horizontal fusion Optional knob piece 8 between the fused portion and the horizontal fused portion
It was possible to open it from an arbitrary site by pinching and pulling.

In this embodiment, since the gusset-folded bag was used, a relatively large amount of seasoned seaweed whose shape was easily collapsed could be safely stored. However, the present invention can store a larger amount of contents than the conventional bag with zipper claws even when used in a normal bag without gusset folding, and is convenient.

[0034]

According to the present invention, the occlusal part of the zipper claw is located at the center of one surface of the bag, and this part is fused from the outer surface with a fusion tape. Therefore, the contents of the zipper bag can be increased, and the advantages of the zipper claw bag can be fully enjoyed.

Therefore, it is possible to hermetically seal a large amount of articles whose interior is desired to be kept in a wet state or those whose desiccation is desired to be kept in a dry state, and to take out only a necessary amount from the central portion of the upper surface and keep the hermetically sealed state again. became.

[Brief description of drawings]

FIG. 1 is a plan view of a surface provided with a zipper claw according to an embodiment of the present invention.

FIG. 2 is an end view taken along the line ii-ii in FIG.

FIG. 3 is an enlarged view of a broken line portion of FIG.

FIG. 4 is a perspective view showing a state in which the zipper is opened and the zipper is opened.

[Explanation of symbols]

 1 zipper bag 2 folded surface 3 folded surface edge line 4 zipper female nail 5 zipper male nail 6 fusion tape 7 fusion part 8 knob piece 9 tape edge line 10 horizontal fusion part 11 non-fusion part 12 heat fusion Functional layer 13 Base material layer 14 Gusset fold line 15 Pressing surface 16 Heat bar 18 Melting part

Claims (3)

[Claims] 1. A sealed bag with a zipper claw which is provided with a zipper claw that is occluded on one surface of the bag and whose inside is a heat-fusible layer, wherein the film outside the zipper claw is folded back. A fusing tape having two rows of folded surfaces and a zipper claw portion of the two rows of folded surfaces and having a heat-fusible layer on the inner surface is used, leaving unfused knob pieces at both ends. A tape-attached zipper bag, which is fused and has horizontal fusion-bonding portions that are orthogonal to the zipper claws. 2. The tape-attached zipper bag according to claim 1, wherein the horizontal fusion-bonded portions are fused together with gusset folds at both ends of the horizontal fusion-bonded portions. 3. The tape-attached zipper bag according to claim 1 or 2, wherein the zipper claws are heat-fused while being occluded at both ends and lose the opening function.