JPS60137368A - Film for artifical anus bag - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a film suitable for use in a disposable bag for treating waste discharged from an ostomy.

Conventional colostomy bag films are made of low-density polyethylene,
Single films such as flexible polyvinyl chloride have been used. However, in order to prevent the odor of the contents from leaking outside, films with odor barrier properties are being used.

In order to form such a film into a bag, heat-sealing properties are important during the bag-making process and the installation of the inlet. The above-mentioned soft polyvinyl chloride cannot be heat-sealed, so high-frequency sealing must be used, and it is often avoided from the viewpoint of speed and cost. Therefore, even in films with odor banoyar,
It is preferable that heat sealability is imparted to both sides of the film. Further, more important points for a film for a colostomy bag are that it has low noise and flexibility.

Low noise refers to reducing the sound generated when the bag is rubbed. This bag is actually fixed around the colostomy with adhesive, but the bag moves as the body moves, and the film bends and rubs, causing noise. It is undesirable to make sounds that make other people realize that you are wearing a bag, or that remind you of the bag's existence. Furthermore, flexibility is necessary so that the film does not cause discomfort when it comes into contact with the skin.

The inventor of the present invention conducted studies to obtain a film having such deodorizing properties, low noise properties, and flexibility, and found that the most suitable material for obtaining deodorizing properties is vinylidene chloride resin, which has heat sealability, Moreover, the material that satisfies low noise and flexibility is a copolymer of ethylene and acrylic ester or methacrylic ester, and by laminating these materials, it is possible to obtain a film for colostomy bags that satisfies the above characteristics. The present invention was completed based on this knowledge.

That is, the gist of the present invention is characterized in that a vinylidene chloride resin is used as an intermediate layer, and copolymer layers with ethylene containing 10% by weight or more of acrylic acid ester or methacrylic acid ester as a comonomer are provided on both sides of the intermediate layer. This is a film for colostomy bags.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 shows an example of a film for an ostomy bag of the present invention formed by a coextrusion method.

A copolymer layer (2) with ethylene containing 10 weight or more of acrylic acid ester or methacrylic acid ester as a comonomer is provided on both sides of the intermediate layer (11) made of vinylidene chloride resin.

The vinylidene chloride resin in the present invention is mainly composed of vinylidene chloride, which is copolymerized with a comonomer such as vinyl chloride, acrylonitrile, acrylic ester, or acrylic acid.

Next, acrylic esters used as comonomers for ethylene include methyl acrylate and ethyl acrylate, and a copolymer of ethylene and methyl acrylate is Poly Ethy from Galfoil Chemical Company in the United States.
A copolymer of ethylene and ethyl acrylate is ERA resin from Nippon Unicar. The methacrylic acid ester used as a comonomer of ethylene is methyl methacrylate, and the copolymer of ethylene and methyl methacrylate is WA resin manufactured by Sumitomo Chemical Co., Ltd. The copolymer of ethylene and the above comonomer has a comonomer of 10
If it is less than % by weight, the low noise property and flexibility will not be good.

The thickness of the film of the present invention is usually about 30 to 150 microns. The obtained film is made into a bag by heat sealing from a tube or flat film, and an inlet is attached by heat sealing.

Next, for forming the film for an ostomy bag of the present invention by the above coextrusion method, either the T-die method or the inflation method may be employed as the coextrusion method. or,
When forming the film for an ostomy bag of the present invention by coextrusion, an adhesive layer is not required. This is because the vinylidene chloride resin has adhesive properties when coextruded with the ethylene-(meth)acrylate copolymer.

Although the film for a colostomy bag of the present invention has been described above using a coextrusion method, the film for a colostomy bag of the present invention may also be formed by a lamination method.

FIG. 2 shows the film for a colostomy bag of the present invention formed by a lamination method, and in the figure (3) shows the adhesive layer.

When obtaining the film for colostomy bags of the present invention, the lamination may be performed by laminating films of each layer material using a dry lamination method, extrusion laminating other materials on a partially filmed material, or laminating vinylidene chloride-based film. It may be coated with resin or by any known method. As the dry laminating adhesive and anchor coating agent used in these steps, various known compounds such as polyurethane, epoxy, acrylic, etc. are used.

As detailed above, the film for colostomy bags of the present invention has a vinylidene chloride resin as an intermediate layer and an acrylic ester or a methacrylic ester as a comonomer.
It is made by providing a copolymer layer with ethylene containing more than 100% of the weight on both sides, and has excellent advantages in terms of odor resistance, low noise, and flexibility.

Examples of the present invention will be shown below.

A mixture of 100 parts by weight of vinylidene chloride resin reacted with 100 parts by weight of vinylidene chloride resin and 8% by weight of dioctyl adipate as a plasticizer was used as a 20 μm intermediate layer, and 20 μm of ethylene-methyl acrylate copolymer (U.S. Galfoil) was formed on both sides of the intermediate layer. A film provided with a Poly Ethy 22Q 5 (methyl acrylate content 20% by weight) layer manufactured by Chemical Co., Ltd. was blown uH 100%). Figure 3 shows the results of the noise test. It was very good.

Comparative Example 1 A film was obtained in the same manner as in Example 1 except that the ethylene-methyl acrylate copolymer was replaced with low density polyethylene. Figure 3 shows the results of the noise test.

Comparative Example 2 A film similar to Example 1 was obtained by replacing the ethylene-methyl acrylate copolymer of Example 1 with an ethylene-vinyl acetate copolymer (vinyl acetate content: 13% by weight). Figure 3 shows the results of the noise test.

Example 2 100 parts by weight of a vinylidene chloride resin reacted at a molar ratio of 85 parts of vinylidene chloride and 15 parts of vinyl chloride was blended with 12 parts by weight of dioctyl adipate as a plasticizer to form a 20μ intermediate layer, and 20μ each on both sides. Ethylene-methyl methacrylate copolymer (manufactured by Sumitomo Chemical Co., Ltd.)
A film provided with a layer containing A resin 17o9 methyl methacrylate (1B weight %) was obtained by an in-place film molding method. The oxygen permeability of the obtained film was 15C
1y'rr? 24Hr (at 25℃RH100%
)Met. Figure 3 shows the results of the noise test. It was better than Comparative Example 1.2.

Example 3 The ethylene-methyl acrylate copolymer used in Example 1 was formed into a film with a thickness of 40 μm. A single layer film made of a vinylidene chloride resin was laminated on both sides of the film made of the ethylene-methyl acrylate copolymer.

Figure 3 shows the results of the noise test. Oxygen permeability is 30
■-24Hr (at 25°C RH 100%).

Comparative Example 3 The same vinylidene chloride resin composition as in Example 2 was
A film was obtained by inflation molding, with layers of ethylene-methyl methacrylate copolymer (manufactured by Sumitomo Chemical Co., Ltd., WA resin 3025, methyl methacrylate content: 5% by weight) each having a thickness of 20 μm provided on both sides as an intermediate layer.

Although the oxygen permeability of the obtained film was the same as in Example 2, the results of the noise test were not good as shown in FIG.

Noise test method: Cut a 20 mm diameter circle in the center of one of the films.
150X200 heat sealed with the other film
After fixing one end of the mg bag and bringing the other end close to the fixed end, it rotates 180 degrees 30 times/minute, and the sound generated is collected with a microphone, frequency converted, and recorded in decibels. (dB) - Record the frequency (kHz).

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the film for colostomy bags of the present invention produced by the coextrusion method, Fig. 2 is a cross-sectional view of the film for colostomy bags of the present invention produced by the lamination method, and Fig. 3 shows the results of noise last. This is a graph showing. (1) ...... Vinylidene chloride resin (2)
...... Copolymer layer with ethylene containing acrylic acid ester or methacrylic acid ester as a comonomer of 10 mm or more (3) ... Adhesive layer patent application Representative of Dai Nippon Printing Co., Ltd. Patent attorney Atsumi Konishi

Claims (1)

[Claims] 10 with vinylidene chloride resin as an intermediate layer and acrylic ester or methacrylic ester as a comonomer.
A film for a colostomy bag, characterized in that a copolymer layer with ethylene containing more than 100% of chlorine is provided on both sides of the film.