JPS6123394Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a laminate material for aroma deodorizing containers.

In recent years, a large number of gel-like aromatic deodorants have appeared on the market, but most of the containers for these are made of plastic, such as injection molded products made of polypropylene.

Furthermore, these containers often need to have the functionality and appearance not only as containers for distribution but also as containers during use.

However, those made of plastic have problems such as waste pollution and are difficult to print beautifully. A container made mainly of paper can easily solve the above problems.

However, the requirements in this case include that the end surface of the paper is not exposed inside the container, that a certain degree of strength is required, and that the inner surface of the container is not attacked by the fragrance. In order to satisfy these functions, it is extremely effective to use a composite container in which sheet materials are integrally joined together by injection molding resin at the same time as injection molding.

This proposal is for using a composite container as an aroma deodorant container based on the above-mentioned viewpoints.
The object of the present invention is to provide a laminated material that is not affected by the fragrance, gel components, etc. contained therein and is capable of adhering to injection molded resin.

That is, the laminated material of the present invention is formed by sequentially laminating a paper layer, an aluminum foil layer, an ethylene-vinyl acetate copolymer (hereinafter simply referred to as "EVA") layer, and/or a polyvinylidene chloride layer and a stretched polypropylene layer. It is something.

The main ingredients of gel-like fragrance deodorant are water, gelatin,
It consists of fragrance, and the fragrance is usually in an oily state. Therefore, in order to provide the container with sufficient resistance to these components, polypropylene is used as the molding resin of the present invention. In addition, the laminated material uses a paper layer to provide a printing effect and container rigidity, and an aluminum foil to provide a gas barrier property against fragrances or a barrier property against moisture (steam). Furthermore, vinylidene chloride and/or EVA are used to impart chemical resistance to oils and fragrances. Furthermore, the above-mentioned polypropylene is provided as the outermost layer for adhesion to the injection molding resin, and this layer is used as the innermost surface.

The laminated material according to the present invention basically has a structure in which a paper layer 1, an aluminum foil layer 2, an EVA layer 3, a polyvinyl chloride layer 4, and a stretched polypropylene layer are laminated in this order, as shown in FIG. Either the EVA layer or the polyvinylidene chloride layer can be omitted, but it is preferable to use both.They can also be three or more layers, and the order of lamination is arbitrary. Furthermore, an adhesive layer may be interposed between each of the above layers, if necessary.

Generally, the structure of a composite container is to first print on a base paper, then laminate the surface, then punch out a blank to match the shape of the container, and feed it to an injection mold to form a male mold and a female mold. The plastic is then injected into a mold hole made up of a blank and a mold to form the product, and then the mold is opened and the product is taken out.

As a container using the laminated material of the present invention, for example, as shown in FIG. 2, a blank 8 consisting of a bottom plate 6 and a wall plate 7 is used, and the wall plate 7 is provided with a window-shaped cut 9. Using this, a container body 10 as shown in FIG. 3 is molded, and a bottom lid 11 is fitted or adhered thereto to form a container for an aromatic deodorant.

The fragrance is filled through the filling port 12 at the top, the filling port 12 is sealed after filling, and when in use, a finger is placed on the notch 9 to create an opening, from which the fragrance is released.

Note that instead of using the bottom cover 11 that fits with the main body, the molded product may be adhered by ultrasonic sealing, or a sheet similar to the blank laminate may be heat-sealed for sealing.

Next, preferred examples of the laminated material according to the present invention used in the above-described composite container will be described.

This laminated material has a nine-layer structure as shown in Figure 4, where 13 to 21 are 260g/ ^m2 paper, 20μ polyethylene, 7μ aluminum foil, unstretched polypropylene, EVA, vinyldene chloride,
This indicates EVA, unstretched polypropylene, and oriented polypropylene.

The polyethylene layer 14 of the above-mentioned laminate is formed by extrusion coating and is an adhesive layer between the paper layer 13 and the aluminum foil layer 15, and other adhesives may be used for this.

Of the six layers 16 to 21, 16 to 20 are bonded together by coextrusion, and 21 is bonded to 20 by thermal bonding.

This is because each layer of 16 to 21 can be made very thin (3 to 5 μm each) by co-extrusion, but since the thickness of polypropylene is too thin for adhesion with the injection resin, it is necessary to bond layers 21 with thermal adhesive. Because there is.

In any case, when adhering these films, the polypropylene on the inner surface is permeable to oils, fragrances, water vapor, etc. In normal lamination methods, there is an adhesive layer and there is a risk that the adhesive will be attacked by them. According to the above-mentioned laminated material, relatively strong lamination strength can be obtained without using an adhesive, and the bonded portion will not peel off. Further, since oil is difficult to reach the adhesive layer between 15 and 16 due to the layers 17 and 19, there is no problem.

As described above, this project uses a paper layer to provide a printing effect and container rigidity, an aluminum foil to provide a gas barrier property against fragrances and a barrier property to moisture (steam), and a chloride layer to provide chemical resistance. Since vinyldene and/or EVA are used, and a stretched polypropylene film is used as the outer layer for adhesion to the injection molding resin, it has appropriate performance when used in containers for aromatic deodorants.

Therefore, since the composite container formed using the laminated material of the present invention does not expose the end surface of the paper, it is particularly suitable as a container for aromatic deodorants.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the laminated material according to the present invention, Fig. 2 is a developed view of a blank, Fig. 3 is a perspective view of a container for aroma deodorant, and Fig. 4 is an example of the laminated material according to the present invention. A cross-sectional view of the figure is shown. 1...paper, 2...aluminum foil, 3...ethylene-
vinyl acetate copolymer layer, 4... vinyldene chloride,
5...Stretched polypropylene.

Claims (1)

[Scope of utility model registration request] A blank in which the wall plate is partially connected to the bottom plate is sandwiched between male and female molds, synthetic resin is injected between the edges of the blank, and the edges are joined together to form a composite container blank.Used for blanks for composite containers. A laminate material for an aroma deodorant container, which is a laminate material and is made of a paper layer, an aluminum foil layer, an ethylene-vinyl acetate copolymer layer, and/or a polyvinylidene chloride layer and a stretched polypropylene layer.