JPS63258770A - Method for manufacturing packaging material containing drug solution - 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 [Industrial Field of Application] The present invention relates to a method for producing packaging materials containing medical solutions at high production rates.

[Prior Art] Recently, various chemical-containing films and chemical-containing compositions, such as stain-resistant films, rust-proof films, and fragrance-containing pellets, have been proposed, and are processed into packaging materials, stain-resistant laminates, and used in posters, postcards, bookmarks, etc. It is used as labels, wall materials, etc.

For example, as a stain-resistant laminate, a stain-resistant film and paper are
There are four-layered ones, and ones in which a stain-resistant film and a barrier film are laminated.

However, these conventional stain-resistant laminates usually have a stain-resistant film interposed between them, and paper or barrier resin is laminated on both sides of the stain-resistant film, so they have the problem that the laminate peels off during storage. Not only that, but because the lamination process is carried out at high temperatures, there are many problems such as escaping or deterioration of chemicals such as fragrances.

[Problems to be Solved by the Invention] An object of the present invention is to provide a method for manufacturing a packaging material made of a laminated structure containing a chemical solution without delamination and at a high production rate.

[Means for Solving the Problems] As a result of intensive studies to solve the above problems, the inventors have completed the present invention.

That is, in the present invention, a chemical liquid impermeable sheet that is wider than the sheet and has holes is superimposed on both sides of a chemical liquid impregnated sheet, and the chemical liquid impermeable sheet protrudes from the edge of the chemical liquid impregnated sheet. This is a method for manufacturing a packaging material containing a chemical solution, which is characterized by immersing and impregnating a laminated sheet obtained by heat-sealing two layers in a chemical solution.

The chemical liquid-impregnated sheet used in the present invention is a chemical liquid-impregnated sheet such as paper, cloth, nonwoven fabric, open cell material, or a plastic sheet that is compatible with the chemical liquid, and is impregnated with a chemical liquid.

In addition, as the above-mentioned chemical solutions, chemicals such as fragrances, repellents, deodorants, bactericides, fungicides, insect repellents, rust preventives, and rat repellents can be used as they are, or powders, tablets, etc. of chemicals can be used with alcohol. It is used by dissolving it in a solution or aqueous solution. The chemical liquid is preferably a vaporizable chemical liquid.

1) There are natural fragrances and artificial fragrances, and natural fragrances include Jacora, Civet,
Vegetable fragrances consisting of animal fragrances such as kasdol and ambergris, and plant essential oils such as lavender oil, peppermint oil, lemon oil, orange oil, rose oil, camphor oil, sandalwood oil, and cypress oil. There is.

Artificial fragrances include synthetic fragrances made of terpene compounds or aromatic compounds, isolated fragrances whose components are separated from essential oils mainly through fractional distillation, and mixtures of various other isolated fragrances, synthetic fragrances, natural fragrances, etc. Examples include blended fragrances prepared to be suitable for practical use, and at least one of these is used.

In addition, as specific examples of the other chemical solutions mentioned above, 2> Fresh Shiraimatsu (product name: Shiraimatsu Shinyaku Co., Ltd.), Biodash (product name: Osaka Soda Co., Ltd., Tokyo Seikagaku Kenkyushin Co., Ltd.), Deodorants such as Anico (product name: Minato Sangyo Co., Ltd.); 3) Antifungal agents such as thiabendazole, vinazine, and α-bromucinnamaldehyde; 4) Alcohols, formalin, salicylic acid, creosote, and phenol. , nitrofurazone, nitrofuryl acrylamide, and other fungicides; 5) Pyrethroid repellents such as synthetic pyrethrin-like compounds such as natural pyrethrin, binamine: vermethrin: Baberthrin: (all product names: manufactured by Sumitomo Chemical ■): 6) DDT agent, BHC agent, drin agent, barathion agent, D
Insect repellents and insecticides such as DVP agents and PGP agents; 1) Naramycin (product name: manufactured by Tanabe Seiyaku ■), ramtaline (product name:
Matsushita Electric Works Ltd.), cotomycin (product name: Osaka Kasei Ltd.)
8) Dog and cat repellents such as lemongrass oil and tobacco tar; 9) Organic amine salts such as dicyclohexylammonium nitrite, and compound ropes such as benzotriazole and methylbenzotriazole. Volatile rust inhibitors such as cyclic amines; 10) Food preservatives such as sorbic acid and dehydroacetic acid; 11) Antifouling agents such as phenylmercury acetate, phenylmercury oleate, steel naphthenate, copper oleate, etc. etc. are mentioned,
Two or more of these drugs may be used in combination depending on the purpose, use, etc.

The chemical impermeable sheet used in the present invention includes polyamide resin, polynylidene chloride resin, polyvinyl chloride resin, saponified ethylene-vinyl acetate copolymer, polyester resin, cellophane, metal foil, Examples include metal-deposited films.

Among these sheets, transparent plastic sheets are preferably used.

Hereinafter, the manufacturing method of the present invention will be further explained in detail based on the drawings.

FIG. 1 is a schematic process diagram for manufacturing the packaging material of the present invention. In this process diagram, a chemical liquid impregnated sheet 2 is fed from the center, and a chemical liquid impermeable sheet 3 is fed from both sides thereof.

Before the chemical liquid impermeable sheet 3 is superimposed on the chemical liquid impregnated sheet 2, holes are made in advance for impregnating or volatilizing the chemical liquid with a roller 10 having heated needles, and the sheet 3 is introduced by a guide roll 11 and impregnated with the chemical liquid. After being superimposed on the sheet 2, it is side-sealed by a heating roll 12, and a laminated sheet 1a consisting of a laminated structure is created.

Further, the laminated sheet 1a is immersed in a chemical liquid dipping tank 15 to sufficiently impregnate the chemical liquid impregnated sheet 2 with the chemical liquid, and then wound up to produce a packaging material 1b containing the chemical liquid.

FIG. 2 shows a perspective view of the packaging material 1b obtained according to the present invention, and FIG. 3 shows a sectional view thereof. The packaging material 1b consists of a liquid-impermeable sheet 2 and a wide chemical liquid-impermeable sheet 3 with holes 5 formed on both sides, and the chemical liquid-impermeable sheets 3 are heat-sealed together at both edges 4. ing. The above-mentioned packaging material Fllb may be cut into an appropriate length 6 in the longitudinal direction.

FIG. 4 shows a packaging material 1b obtained according to the present invention, in which a drug solution impregnated sheet 2 is wound around a drug solution impermeable sheet 3 and one end 4 is sealed.

In addition, the holes 5 provided in the chemical liquid impermeable sheet 3 may be opened as many holes as are suitable for the vaporization of the chemical liquid, but in some cases, it may take time for the chemical liquid to penetrate through the holes 5. , chemical solution immersion tank 15 according to the required production speed.
It is a good idea to adjust the length accordingly.

Note that if the chemical liquid impermeable sheet 3 is made of plastic, the fusion bonding is performed by thermocompression bonding, but in the case of materials that cannot be directly fused, such as aluminum foil, the inner surface may be coated with plastic in advance. It is best to use a thermocompression bonder.

[Examples] Hereinafter, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto.

After extruding and laminating 0.015 #lI thick low density polyethylene on one side of a 1L 0.025 g thick polyethylene terephthalate film, use a hot needle to drill approximately 10,000 11I11 diameter holes evenly per 1TIt. 6
Two 6m wide perforated chemical liquid impermeable sheets are rolled out so that the low density polyethylene layers face each other, and between the two sheets, basis weight 500g/TIt1 thickness 3#I11, width 60aw
A chemical liquid-impregnated sheet made of + dry paper was rolled out, and after stacking these three sheets, they were passed through a pair of heated rolls at a temperature of 150°C and pressed with a linear pressure of 0.5 ka/i to obtain a laminated sheet. Ta. This laminated sheet was immediately immersed in a 1 m long ethyl alcohol bath to be impregnated with ethyl alcohol, and then cut into 80 mm lengths to obtain a packaging material containing a chemical solution.

This packaging material contained 6 g of ethyl alcohol, which is approximately 1.5 times the weight of the laminated sheet. Further, since the chemical liquid impermeable sheets protruding from both ends of the chemical liquid impregnated sheet are heat-sealed together, there was no delamination of the laminated sheet not only during manufacture but also during use. Furthermore, although this series of production was carried out at a high speed of 10 m/win, the impregnation of ethyl alcohol into the chemical solution impregnated sheet was good.

A packaging material was obtained in the same manner as in Example 1, except that the width of the drug impermeable sheet was 60 jlsl.

In this packaging material, the adhesion between the chemical liquid-impregnated sheet and the chemical liquid-impermeable sheet was good to some extent, but the chemical liquid-impregnated sheet itself was destroyed within its layers by ethyl alcohol, and the packaging material remained intact even during the manufacturing process and when cutting. It peeled and separated into two pieces approximately in the middle of the thickness, making it unusable.

1iL Instead of the chemical liquid impermeable sheet 2B in Example 1,
Same as Example 1 except that a single layer of polyethylene terephthalate film impermeable to chemicals was used, a rubber adhesive was applied instead of extrusion lamination of low density polyethylene, and the hot roll was used without heating. In this way, packaging material was obtained.

This packaging material had the same problems as Comparative Example 1 because the layers peeled off due to ethyl alcohol.

[Effects of the Invention] As described above, the packaging material containing the chemical solution produced by the method of the present invention is free from delamination unlike conventional packaging materials and can be produced at a high production rate.

[Brief explanation of the drawing]

FIG. 1 is a schematic process diagram for manufacturing the packaging material of the present invention, FIGS. 2 and 3 are a perspective view and a cross-sectional view, respectively, of the packaging material obtained by the present invention, and FIG. 4 is a schematic process diagram for manufacturing the packaging material of the present invention. FIG. 3 is a cross-sectional view of another packaging material. 1a... Laminated sheet, 1b... Packaging material containing a chemical liquid, 2... Chemical liquid impregnated sheet, 3... Chemical liquid impermeable sheet, 4... Peripheral part, 5... Hole, 6 ...cutting line, 1
0... Hot needle roll, 11.13.14... Guide roll, 12... Heating roll, 15... Chemical solution immersion tank.

Claims (1)

[Claims] 1. Both sides of the chemical solution impregnated sheet have a width wider than that of the sheet,
A laminated sheet obtained by stacking perforated chemical liquid impermeable sheets and thermally fusing the chemical liquid impermeable sheets protruding from the edges of the chemical liquid impregnated sheet, is immersed in a chemical liquid,
A method for producing a packaging material containing a chemical solution, characterized by impregnation. 2. The chemical liquid impregnated sheet is paper, nonwoven fabric, open cell material,
A method for producing a packaging material containing a chemical solution according to claim 1, which is any plastic sheet that is compatible with the drug solution. 3. The method for producing a packaging material containing a drug solution according to claim 1 or 2, wherein the drug solution impermeable sheet is a plastic sheet. 4. A method for producing a packaging material containing a chemical solution according to claim 1, 2 or 3, wherein the chemical solution is a vaporizable chemical solution. 5. The vaporizable chemical solution is at least one selected from fragrances, repellents, deodorants, bactericides, fungicides, insect repellents, and rust preventives.
A method for producing a packaging material containing the liquid medicine according to claim 4, which is a type of medicine.