JPS6122850Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a packaging material made of or containing a synthetic resin film, specifically, a packaging bag made of such a packaging material, which can be cut out and easily pasted onto paper, etc. The present invention relates to packaging materials that can be

Conventionally, packaging bags made using synthetic resin films have a synthetic resin film such as polyethylene, polypropylene, polyester, nylon, or polyvinyl chloride exposed on the outer surface. Therefore, if a part of such a packaging bag is provided with a printing section for prizes or other prizes, even if a consumer tries to cut out that section and attach it to a postcard for entry, it will not be possible for the consumer to cut out that section and attach it to a postcard for entry. Starch-based pastes cannot be used to attach synthetic resin films to paper. Therefore, it is necessary to use a special adhesive for synthetic resin or to mail the cut pieces in a sealed letter, which not only burdens consumers but also discourages them from applying.

The present invention solves these problems and provides a packaging material in which a cut-out printed part can be easily pasted onto paper such as a postcard, and in which at least one of the inner and outer surfaces of the synthetic resin film is attached. An adhesion auxiliary layer is provided on the outer surface of the synthetic resin film to cover the printed portion formed on the surface of the synthetic resin film, and the adhesion auxiliary layer itself does not have adhesive properties and is capable of adhesion with the hydrophilic glue. It is characterized by having a structure that has a sexual nature.

Next, an embodiment of the present invention will be described based on the drawings. In FIGS. 1 to 9, a synthetic resin film 1 is made of polyethylene, polypropylene, polyester, nylon, polyvinyl chloride, or vinylidene-coated cellophane with a thickness of about 5 to 50 μm. It is made of other stretched or unstretched film, and it does not matter whether or not it has thermal adhesive properties. The adhesion auxiliary layer 3 is made mainly of imine-acrylic-epoxy resin, polyvinyl alcohol resin, nitrocellulose resin, etc., dissolved in an appropriate solvent, or inocyanate adhesive of about 0.10 to 1.08% by weight. It is formed by applying an adhesion auxiliary agent mixed with an adhesion agent to the outer surface of the synthetic resin film 1 at a basis weight of about 0.1 to 0.5 g/m ² by an appropriate means and drying it. Such an adhesion auxiliary layer 3 can be adhered to the synthetic resin film 1 in a dissolved state before drying, and after drying, it itself has no adhesive properties and can be attached to a hydrophilic glue such as starch, polyvinyl alcohol, or gum arabic. It has adhesive properties with adhesives.

1 and 2, a printed portion 2 consisting of figures, symbols, characters, etc. is provided on the inner surface of a synthetic resin film 1, and an adhesion auxiliary layer 3 is provided on the outer surface of the synthetic resin film 1 so as to cover this printed portion 2. FIG. 3 shows a packaging material 7 in which a printed portion 2 similar to that described above is provided on the outer surface of a synthetic resin film 1, and an adhesion auxiliary layer 3 is provided thereon to cover the printed portion 2.
It is shown. In addition, in FIG. 4, printed parts 2 and 2' are provided on both the inner and outer surfaces of the synthetic resin film 1, and an adhesion auxiliary layer 3 is provided to cover the printed parts 2 on the outer surface. A packaging material 7 is shown in which the printed parts 2, 2' can be seen from both the inside and outside even if the resin film 1 is opaque.

The packaging materials 7 of the three embodiments described above are composed of a single layer of synthetic resin film 1, but the packaging materials 7 shown in FIGS. 5 and below are composed of two or more layers with synthetic resin film 1 as the outermost layer. That is, in FIGS. 5 and 6, a printed portion 2 is provided on the inner surface of a synthetic resin film 1 that does not have thermal adhesive properties or has a weak thermal adhesive strength, and an adhesion auxiliary layer 3 that covers the printed portion 2 is provided on the outer surface. A packaging material 7 is shown, which is constructed by covering the entire inner surface with a heat-adhesive synthetic resin film 4 made of polyethylene, polypropylene, etc. with a diameter of about 5 to 50 microns, and which can be made into bags by heat adhesion. In addition, in FIGS. 7 and 8, a printed part 2 is provided on the inner surface of the synthetic resin film 1, and an adhesion auxiliary layer 3 covering the printed part 2 is provided on the outer surface, and an adhesive layer 5 such as an extruded molten polyethylene film is attached to the aluminum. A protective layer 6 made of foil, nylon, polyester, etc. is laminated on the inner surface, and an adhesive synthetic resin film 4 is further coated on the inner surface of the protective layer 6 to prevent the aroma from evaporating from the contents and to protect against moisture from the outside. A packaging material 7 is shown which is gas- and light-blocking. Furthermore, in addition to those shown in FIGS. 7 and 8, FIG. 9 shows a structure in which a printed portion 2' is provided on the inner surface of the protective layer 6 to match the printed portion 2 on the outer surface, so that even if the protective layer 6 is opaque, Printing section 2, 2'
A packaging material 7 is shown that can be confirmed from both the inside and outside.

A consumer who obtains a product related to a packaging bag made of the packaging material of the present invention as shown in each of the above embodiments can cut out the printed part and use a starch-based or other commonly available packaging bag. Hydrophilic glue is applied to the outer adhesion auxiliary layer, which is pasted onto postcards and entered into prizes and other prizes.

That is, according to the present invention, an adhesion aid that has adhesiveness with hydrophilic glue is applied to a specific part of the synthetic resin film that does not have adhesiveness with hydrophilic glue, that is, on the outer surface of the area where the printing part is provided. By providing a layer, small pieces of packaging material that have been cut out can be easily pasted onto paper, etc., and therefore consumers are not burdened with the extra burden of using special adhesives or mailing small pieces in sealed letters. It's something that doesn't exist. Furthermore, since the adhesion auxiliary layer itself does not have adhesive properties, it is advantageous for handling since there is no inconvenience that the packaging materials or packaging bags made from the same can be stacked together due to moisture or the like.

[Brief explanation of the drawing]

Figure 1 is a partial plan view of the first embodiment of the present invention, Figure 2
The figures are an enlarged sectional view along line A-A in Figure 1, Figure 3,
Fig. 4 is a partial sectional view of the second and third embodiments, Fig. 5 is a partial plan view of the fourth embodiment, and Fig. 6 is Fig. 5B-
FIG. 7 is an enlarged sectional view taken along line B, FIG. 7 is a partial plan view of the fifth embodiment, FIG. 8 is an enlarged sectional view taken along line C-C in FIG. 7, and FIG. 9 is a partial sectional view of the sixth embodiment. It is. 1...Synthetic resin film, 2, 2'...Printed part, 3...Adhesion auxiliary layer.

Claims (1)

[Scope of utility model registration request] An adhesion auxiliary layer is provided on the outer surface of the synthetic resin film to cover the printed portion formed on at least one of the inner and outer surfaces of the synthetic resin film, and the adhesion auxiliary layer itself does not have adhesive properties. A packaging material that can be pasted and bonded, characterized by having adhesive properties with a hydrophilic glue.