JP2576490Y2 - Boilable packaging material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a packaging material, and more particularly, to a packaging material having a good feeling, a high-class feel, and a boilable shape.

<Prior Art> Conventionally, as a material for packaging foods requiring boil processing such as side dishes and pickles, a laminated material having a water-resistant and heat-resistant plastic film as a base material has been used. This packaging material was printed on the surface as needed, then formed into a bag shape, stored and sealed with food, and boiled.

On the other hand, as a packing material having a feeling and high quality, there is a material in which a plastic film is used as a base material and a material capable of giving a feeling such as Japanese paper and nonwoven fabric is laminated on the outermost layer. This packaging material has been used for packaging high-grade Japanese confectionery, laver, tea and the like.

<Issues to be solved by the invention> In recent years, for the purpose of differentiating products, various ideas have been devised for packaging materials. There is a desire to use materials. Then, when a product obtained by laminating Japanese paper, nonwoven fabric, etc. on the outermost layer of the conventional boilable packaging material was produced, it was found that there was a serious drawback. That is,
Water adheres to the surface of the packaging material after boiling, and if a water-retaining material such as Japanese paper or nonwoven fabric is used for the outermost layer,
Cooling water after boil treatment and microorganisms present in the atmosphere
They adhere to the surface of the packaging material and multiply due to the presence of moisture. In order to prevent this, it is conceivable to use a fungicide or the like. However, general fungicides are mainly used for industry and cannot be applied to food packaging materials. On the other hand, as a preservative for food, some chemicals such as orthophenylphenol and benzoic acid as a disinfectant have been approved for use, but their effects are weak, and when applied to the above-mentioned packaging materials, boiled Almost no effect is obtained, coupled with the outflow of chemicals during processing.

In view of the above-mentioned problems, the present invention provides a boilable packaging material having a good feeling and a high-grade feel, and in which microorganisms do not grow on the surface. .

<Means for Solving the Problems> That is, the present invention provides, in this order, a sealant layer made of a resin having heat sealability, a base material having heat resistance and water resistance, and a feeling imparting layer made of Japanese paper or nonwoven fabric.
A part of the zeolite ion-exchangeable metal is replaced with at least one metal selected from silver, copper, and zinc on the texture-imparting layer of the laminated material obtained by laminating through the adhesive layer as necessary. A boilable packaging material comprising a coating layer containing an antibacterial zeolite obtained by the above method, and a pattern printing layer provided on the coating layer.

<Function> The packaging material of the present invention having the above-described configuration can be boiled by using a heat-resistant and water-resistant base material.
The texture is imparted by the texture imparting layer and has a luxurious feeling. The antimicrobial zeolite contained in the coating layer activates oxygen in contact with the active layer, and the active oxygen prevents the growth of microorganisms attached to the surface of the packaging material.

<Example> Next, this invention is demonstrated based on drawing. FIG. 1 is a sectional view showing an embodiment of the present invention.

The packaging material of the present invention includes a sealant layer (1) made of a heat-sealable resin, a heat-resistant and water-resistant base material (2), and a texture-imparting layer (3) made of Japanese paper or nonwoven fabric in this order. Further, a coating layer (5) containing an antibacterial zeolite (4) is provided on the feeling imparting layer (3), and a picture printing layer (6) is provided on the coating layer (5). Note that the layers may be laminated via an adhesive layer (7) as necessary.

The sealant layer (1) is made of a resin such as polyethylene or vinyl acetate, and enables the packaging material to be heat-sealed.

As the base material (2), a film, such as polyester or polyamide, which withstands the heat and moisture of the boil treatment is used.

As the texture imparting layer (3), Japanese paper or nonwoven fabric is used. Selection of Japanese paper or non-woven fabric uses a material having an appropriate basis weight and smoothness in consideration of a desired feeling, printing suitability, processing suitability, and the like.

The coating layer (5) is formed by coating a coating composition obtained by mixing an antibacterial zeolite (4) having a solid content ratio of about 1 to 5% by weight with an adhesive resin such as vinyl acetate as a binder. By the method, the feeling imparting layer (3)
It is provided above. The antibacterial zeolite (4) referred to in the present invention is obtained by substituting a part, substantially all, of the ion-exchangeable metal of zeolite with at least one metal selected from silver, copper and zinc. For example, those disclosed in JP-A-60-100504 and JP-A-60-181002 can be used. Coating layer (5)
Is preferably provided on the entire surface on the texture imparting layer (3).

The above-mentioned packaging material of the present invention may be provided with another layer as required. Specifically, a metal foil layer or a metal vapor-deposited layer for enhancing the protection of the contents, a strength-imparting layer for increasing the strength of the packaging material, and the like.

 Next, an example of preparing the packaging material of the present invention will be described.

One side of Japanese paper having a basis weight of 20 g / m ² was extrusion-coated with a polyethylene having a thickness of 20 μm as an adhesive layer. Next, using a gravure plate having a depth of 60 μm, a coating solution containing a vinyl acetate resin as a binder and an antibacterial zeolite at a solid content ratio of 3% by weight was applied to the surface of the aforementioned Japanese paper at a coating amount of 1-2 g / m ² . Was applied. After drying the solvent of the coating solution, a pattern is printed on the coating layer by gravure printing, and then a vinylidene chloride-coated stretched polyamide film (KONy, # 1)
5) A polyethylene film (thickness: 60 μm) was sequentially laminated to obtain a packaging material of the present invention (Example 1).

Example 2 was obtained in the same procedure using a rayon non-woven fabric having a basis weight of 30 Hg / m ² instead of the aforementioned washi paper.

<Test Example> Using the above-described packaging material of the present invention, a fungicidal effect was tested. For comparison, those of Example 1 and Example 2 without a coating layer were prepared, and Comparative Examples 1 and 2 were obtained.

After making the packaging material into a 200 x 300m / m 3-side sealed bag, seasoned chopped radish (solid content 25%, pickling solution 75%) 1kg
Was sealed and then boiled at 85 ° C. for 20 minutes. Next, the content was allowed to cool in cooling water at 25 ° C. for 1 hour, and the content was cooled to 40 ° C. or less. Thereafter, water droplets on the surface of the packaging material were removed (to the extent that water droplets did not drop) and stored in a room at 25 ° C. The surface condition of the packaging material was observed at regular intervals. The results are shown in the table below.

As is clear from the above results, the packaging material of the present invention is:
It was confirmed that it had antifungal properties.

<Effect of the Invention> Since the packaging material of the present invention has the above-described configuration, it is a packaging material that can be boiled, has a good feeling, and has a high-quality feel. It is an excellent packaging material with no generation of mold or the like.

[Brief description of the drawings]

 FIG. 1 is a sectional view showing an embodiment of the present invention. (1) ... sealant layer, (2) ... substrate (3) ... texture imparting layer (4) ... antibacterial zeolite (5) ... coating layer (6) ... picture printing layer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B32B 1/00-35/00 B65D 81/00-81/38

Claims (1)

(57) [Scope of request for utility model registration] 1. A sealant layer made of a resin having a heat sealing property, a base material having heat resistance and water resistance, and a feeling imparting layer made of Japanese paper or a nonwoven fabric are laminated in this order via an adhesive layer, if necessary. A part of the zeolite ion-exchangeable metal is placed on the texture-imparting layer of
Copper, provided with a coating layer containing an antibacterial zeolite obtained by replacing with at least one metal selected from zinc, provided with a pattern printing layer on the coating layer,
Boilable packaging material.