JPH07101454A - Medicine sealing sheet - Google Patents

Abstract

PURPOSE:To provide a medicine sealing sheet which has a large absorbing capacity for moisture or the like is a high absorbing speed for the same, and is easily decomposed in soil when discarded since a biodegradable material is used, ad occurrence of dust is prevented by sealing medicine in a nonwoven fabric matrix made of boidegradable fiber. CONSTITUTION:Two or more layers of nonwoven fabric made of biodegradable fiber are laminated, medicine of 200 to 2000g/1m<2> is sealed between the layers, and the layers are subjected to heat and pressure to mold a sheet having a thickness of 1 to 10mm. Medicine to be sealed may include hygroscopic desiccant such as silica gel and calcium chloride, stabilizer such as deoxidizer, deodorant such as activated carbon, deodorant such as chlorophyl and insecticide. The sheet mold can be cut into an optional shape while cut surfaces are fused or applied with resin solution to be sealed, thereby preventing dust from occurring from an end face. The biodegradable fiber is preferably aliphatic polyester fiber.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to the drying and stabilizing of medicines and food packages; the drying of packaging for electronic devices and the like; the drying of storage furniture, deodorization and insect control; the drying and deodorization of shoes; and the refrigerator. The present invention relates to a chemical-containing sheet used for deodorizing inside.

[0002]

2. Description of the Related Art Conventionally, as a sheet-shaped desiccant,
There are sheets in which silica gel is encapsulated in polyethylene, plate-shaped molded products of zeolite, and sheets in which natural pulp and desiccant powder are wet-processed. However, the ones do not have sufficient adsorption capacity and adsorption speed, and the ones are easily broken,
The ones have insufficient adsorption capacity, the sheets have insufficient strength and are easily cracked, and dust is generated from the edges, and the other ones have the drawback of becoming a pollution factor when discarded. there were.

[0003]

DISCLOSURE OF THE INVENTION The present invention has a large adsorption capacity for moisture and the like, a high adsorption rate, and is durable.
Also provided is a drug-containing sheet that has high strength, does not generate dust, and has various characteristics that biodegrade even when discarded.

[0004]

The present invention is a drug-containing sheet in which a drug is encapsulated in a nonwoven fabric matrix made of biodegradable fibers and formed into a sheet. The biodegradable fiber, which is stable in the dry state in the air, has a property of decomposing in compost, wet soil, water, etc., for example, aliphatic polyester, polyvinyl alcohol, polyvinyl acetate, Examples thereof include fibrous substances such as polyvinylpyrrolidone, polyhydroxybutyrate, polyacrylate, water-soluble cellulose derivative, protein, starch, and copolymers thereof, and aliphatic polyester fibers are preferable. These biodegradable fibers are used as a nonwoven fabric. The nonwoven lap two or more layers, and encapsulating the drug 1 m ² per 200~2,000g between the layers, is formed into a sheet of heat pressurizing thickness 1~10mm this.

The agents to be enclosed are silica gel, alumina gel, zeolite, hygroscopic desiccants such as calcium chloride, sodium chloride, magnesium chloride, lithium chloride, stabilizers such as oxygen absorbers, acid clay, activated carbon, etc. And deodorants such as chlorophyll, and insect repellents such as pyrethroids and parasols. The sheet-shaped product is cut into an arbitrary shape, and the cut surface is welded, or the cut surface is sealed by a method such as applying a resin solution, thereby preventing the generation of dust from the end surface. it can.

[0006]

[Example] A fiber made of biodegradable aliphatic polyester resin (trade name "Bionore") manufactured by Showa Highpolymer Co., Ltd., made into fibers, fiber denier 6 denier, basis weight 30 g / m ² , length 1 A total of 1,000 g of A-type silica gel (40 mesh or less) was sandwiched between eight layers of non-woven fabric of 1,000 mm in width and 1,000 mm in width. This one
While heating at 20 ° C to 160 ° C, it was pressed at a pressure of 15 to 20 kg / cm ² for several tens of seconds to several minutes. Thereby, a sheet having a thickness of 3.5 mm was obtained. Next, this sheet 120-1
A punching die heated to 60 ° C. was used to cut a sheet having a side of 10 mm. As a result, the cut surface was sealed by heat fusion and dust leakage was prevented. The sheet-shaped desiccant thus produced (desiccating agent content 2.5 g / sheet) is used for PT of pharmaceuticals and the like.
It can be automatically put into P packaging, is plate-shaped, does not have unnecessary protrusions, and does not break the packaging material film, making it ideal for quality maintaining packaging of pharmaceuticals and the like.

[0007]

Industrial Applicability The chemical-containing sheet of the present invention thus produced has the following features. (1) A large amount of a drug can be injected into the nonwoven fabric matrix, and since it is a fiber, it has a large adsorption capacity and a high adsorption rate. (2) Since it is made of biodegradable material, it will not easily cause environmental pollution even if it is discarded, because it is easily decomposed in the soil. (3) It can be heat-sealed and can be easily adhered to a base material such as aluminum. (4) Since the end faces are sealed, no dust is generated and the stored items are not contaminated.

The sheet of the present invention makes use of the above characteristics,
It is used for preservation of the packaging environment such as drying and stabilization of medicines and food packages, and in particular, it is used by inserting it into PTP packaging. It can also be used for storage by inserting it into a package such as electronic equipment, precision equipment, precision chemicals, magnetic tape, photographic film, etc., whose performance is easily affected by moisture. In addition, moisture protection inside closets, chests, etc .; drying of dried flowers, etc .; drying of shoes etc., deodorization; deodorization in the refrigerator, etc. It can be widely applied to the fields used.

Claims (4)

[Claims] 1. A drug encapsulating sheet obtained by encapsulating a drug in a non-woven fabric matrix made of biodegradable fibers and molding the same into a sheet. 2. The sheet according to claim 1, wherein the drug is a desiccant. 3. The sheet according to claim 1, wherein the biodegradable fiber is an aliphatic polyester fiber. 4. The sheet according to claim 1, wherein the edges of the sheet are sealed.
A sheet according to any one of 3 to 3.