JPH09175563A - Sealing bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform a tearing for unsealing without placing an incision (slit) and without using a tool such as scissors for a sealing bag made of a laminated sheet for which a plurality of synthetic resin films are laminated, or a synthetic resin film and aluminum foil, etc., are laminated. SOLUTION: For this sealing bag which is made by alternately bonding a drawn film 3 and a non-drawn film 4, a coating layer 5 on which glass beads 6 are included, on at least one edge of the sealing bag. If the sealing bag is torn at the part where the coating layer 5 is provided, the drawn film 3 is scratched by the glass beads 6 existing on the area to be torn, and the sealing bag 1 is easily torn apart, and an unsealing of the sealing bag can be easily performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed bag made of a synthetic resin film or a laminated sheet of a synthetic resin film and another film such as aluminum, which can be easily torn for opening. It is the one.

[0002]

2. Description of the Related Art Conventionally, various sealed bags made of a synthetic resin film or a laminated sheet of a synthetic resin film and another film such as aluminum have been known for containing liquid or powdered seasonings. .

[0003]

In such a sealed bag, scissors or the like should be used unless a cut (slit) is made in the heat-sealed portion of the sealed bag in order to facilitate opening when taking out the contents. There was a problem that it could not be opened without tools.

The present invention solves such a problem, and is a hermetically sealed bag made of a laminated sheet formed by laminating a plurality of synthetic resin films or a laminated sheet formed by laminating a synthetic resin film and aluminum foil. The object of the present invention is to allow tearing for opening without making a slit (slit) and without using tools such as scissors.

[0005]

In order to solve this problem, the present invention uses a laminated sheet formed by laminating a plurality of synthetic resin films or a laminated sheet formed by laminating a synthetic resin film and aluminum foil. It is a gist of the present invention to provide a coating layer in which particles such as ceramics and metals are mixed on at least one side of the sealed bag. Further, the gist of the present invention is that the coating layer is provided along at least one side of the sealed bag over the entire length. Further, the gist of the present invention is that the coating layer is provided on a part of at least one side of the sealed bag.

With this configuration, in a sealed bag made of a laminated sheet formed by laminating a plurality of synthetic resin films or a laminated sheet formed by laminating a synthetic resin film and aluminum foil, etc., at least one side of the sealed bag is provided. Since a coating layer in which particles such as ceramics and metal are mixed is provided, if the sealing bag is torn at the portion where the coating layer is provided, the sheet is formed by the glass beads present at the portion to be torn. The bag is damaged and the sealed bag is easily torn, and the sealed bag can be easily opened.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First, the first embodiment shown in FIG. 1 to FIG. 3 will be described. Reference numeral 1 is a sealed bag made of a synthetic resin film as a material and containing a liquid or powdered seasoning, and one sheet is folded in two. Then, the three sides other than the folded portion are closed by heat sealing. 2 is the heat seal part. As shown in FIG. 2, the sheet is made by joining a stretched film 3 made of nylon and an unstretched film 4 made of polyethylene to each other, and is manufactured on the entire surface of the stretched film 3 located on the front side. The coating layer 5 is provided in the process. The composition of the binder resin used in the coating layer 5 is composed of urethane resin, vinyl resin and wax when the stretched film 3 is the above-mentioned biaxially stretched nylon film, and the stretched film 3 is, for example, a biaxially stretched polyester film. In the case of (1), a myriad of glass beads having a particle diameter of 5 to 45 μm are mixed in a binder resin made of urethane resin and vinyl resin and wax or vinyl resin and wax, and selected by the stretched film 3 as a base material. Therefore, the glass beads 6 are formed on the coating layer 5 provided on the surface of the stretched film 3.
Exist at random. The coating layer 5 has a thickness of 2
The thickness of the glass beads 6 is about 3 μm, and the glass beads 6 are in contact with the surface of the stretched film 3 located on the front side.
Is provided so as to project from the surface of the. The sheet is folded in two with the coating layer 5 on the front side, and the three sides other than the folded portion are closed by heat sealing to form the sealed bag 1. The sealed bag 1 is heat-sealed on two sides, and then liquid or powdered seasoning is put therein, and finally the remaining one side is closed by heat-sealing.

In the above structure, since the coating layer 5 is provided on the entire surface of the stretched film 3, the coating layer 5 is also present in the heat seal portion 2 and the glass beads 6 are also present at random. The average distance between the glass beads 6 and 6 is about 44 μm.

When the contents are taken out from such a sealed bag 1, the heat seal portion 2 on any one side is torn as shown in FIG. 3, so that the glass present in the portion to be torn is present. The stretched film 3 is scratched by the beads 6, and the stretched film 3 and the unstretched film 4 joined to the stretched film 3 are easily torn. When the average distance between the glass beads 6 and 6 exceeds 200 μm, the glass beads 6 are less likely to be present at a point to which a force is applied when attempting to tear, and the sealed bag 1 is difficult to tear. Although the coating layer 5 and the glass beads 6 are present on the entire surface (both front and back surfaces) of the sealed bag 1 in the first embodiment, the coating layer 5 mixed with the glass beads 6 is heat-sealed on one side, for example. It may be provided only in the section 2. Further, the coating layer 5 may be provided on both sides of the sealed bag 1, or may be provided on only one side of the sealed bag 1. When the coating layer 5 is provided only on one side of the sealed bag 1, the coating layer 5 does not exist on the edge of the sealed bag 1 if it is slightly removed from the edge of the sealed bag 1, and therefore the sealed bag 1 can be used to take out the contents. 1 is less likely to tear, so it is necessary to provide the coating layer 5 along the edge of the sealed bag 1. Furthermore, the coating layer 5 in which the glass beads 6 are mixed does not need to be provided over the entire length of at least one side of the sealed bag 1, and may be provided as a cut portion of the sealed bag 1 only at a part of at least one side. . In addition, tearing of the sealed bag 1 is not limited to the heat seal portion 2,
It may be performed at the two-folded portion. In that case, as in the second embodiment shown in FIGS. 4 and 5, the coating layer 5 (shown by the hatched portion) is provided along the double-folded portion, and the appropriate portion of the double-folded portion is cut to take out the contents. By doing so, when the contents are taken out as shown in FIG. 5, the contents, especially the liquid contents, do not reach the bottom of the sealed bag 1 and flow down smoothly from the cut portion, so that the contents can be taken out easily. I can do it.

By the way, although the coating layer 5 is provided on the surface of the stretched film 3 in the first embodiment, the same applies if a coating layer is provided between the stretched film 3 and the unstretched film 4 which are joined to each other. The effect of is obtained. Further, it is possible to stack a plurality of coating layers provided on the surface of the stretched film 3 or between the stretched film 3 and the unstretched film 4, whereby the sealed bag 1 is provided.
When viewed from above, the glass beads 6 are densely present in the horizontal direction (lateral direction), so that the sealed bag 1 can be easily torn. The same effect can be obtained by providing the coating layer 5 on the surface of the stretched film 3 and between the stretched film 3 and the unstretched film 4 as in the third embodiment shown in FIG.

The sealed bag 1 is a four-sided seal type as in the fourth embodiment shown in FIG. 7, in addition to the first embodiment shown in FIGS. 1 to 3, and the fifth embodiment shown in FIG. 9, a stand-pack type like the sixth embodiment shown in FIG. 9, a tetra-pot type like the seventh embodiment shown in FIG. 10, an eighth embodiment shown in FIG. Other shapes such as a gusset type having four faces and having both ends in the length direction closed by heat sealing as in the case of the above are essential. A coating layer is provided.

Further, although glass beads are mixed in the coating layer in the above description, other particles such as ceramics or metal may be used in addition to glass beads. By the way, the shape of this grain may be a perfect circle,
A corner may be present on the surface as in the ninth embodiment shown in FIG. By selecting the granules 7 having the corners on the surface, the tear of the sealed bag 1 can be performed more easily.

The contents stored in the sealed bag 1 are not limited to the above liquid or powdered seasonings, and the film forming the sealed bag 1 can be selected according to the type of the contents. good. For example, a laminated sheet of a biaxially stretched nylon film (stretched film 3) and an unstretched polyethylene film (unstretched film 4) as in the first embodiment, or a laminated sheet of another synthetic resin film,
Alternatively, the sealed bag 1 may be formed by using a sheet in which a synthetic resin film is laminated with aluminum foil or the like as required.

[0014]

As described above, according to the present invention, a sealed bag made of a laminated sheet formed by laminating a plurality of synthetic resin films or a laminated sheet formed by laminating a synthetic resin film and aluminum foil Since at least one side of the sealing bag is provided with a coating layer in which particles of ceramics, metal, etc. are mixed, if the sealing bag is torn at the portion where the coating layer is provided, it will try to tear. The glass beads present on the part damage the sheet, and the sealed bag is easily torn, so that the sealed bag can be easily opened.

[Brief description of the drawings]

FIG. 1 is a perspective view of a sealed bag according to a first embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part of the sealed bag.

FIG. 3 is a perspective view showing a state in which the sealed bag is torn.

FIG. 4 is a perspective view of a sealing bag according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing a state in which contents are taken out from the sealed bag.

FIG. 6 is a sectional view of a sealing bag according to a third embodiment of the present invention.

FIG. 7 is a perspective view of a sealing bag according to a fourth embodiment of the present invention.

FIG. 8 is a perspective view of a sealing bag according to a fifth embodiment of the present invention.

FIG. 9 is a perspective view of a sealing bag according to a sixth embodiment of the present invention.

FIG. 10 is a perspective view of a sealed bag according to a seventh embodiment of the present invention.

FIG. 11 is a perspective view of a sealing bag according to an eighth embodiment of the present invention.

FIG. 12 is a perspective view of particles mixed in a coating layer according to a ninth embodiment of the present invention.

[Explanation of symbols]

 1 Sealing bag 2 Heat seal part 3 Stretched film 4 Unstretched film 5 Coating layer 6 Glass beads 7 Granules

Claims (3)

[Claims] 1. A hermetically sealed bag made of a laminated sheet formed by laminating a plurality of synthetic resin films or a laminated sheet formed by laminating a synthetic resin film and aluminum foil, etc., wherein at least one side of the sealed bag is made of ceramics. A sealed bag provided with a coating layer in which particles such as metal are mixed. 2. A coating layer for at least one of the sealed bags.
The sealed bag according to claim 1, wherein the sealed bag is provided along the entire length along the entire length. 3. A coating layer for at least one of the sealed bags.
The sealed bag according to claim 1, wherein the sealed bag is provided on a part of the side.