JPH0439879B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to bedding such as wool cotton futons and wool pads, which are made by spraying and impregnating wool cotton filling with antibacterial agents and fungicides to provide sanitary treatment. [Prior art] For example, wool sprayed with antibacterial agents is
Wool treated with formaldehyde is known, as described in Publication No. 34-698. However, these techniques have had problems in that the woolen cotton turns yellowish brown and the odor of the drug itself remains on the woolen cotton, causing discomfort. Therefore, from pages 330 to 330 of the Antibacterial and Antibacterial Handbook (Gihodo, 1986, 5, 25), edited by the Japan Antibacterial and Antibacterial Society,
As shown on page 339, a technique has also been proposed that uses thiabendazole and the like to solve problems such as discoloration while also providing antibacterial and antifungal properties. By the way, as a result of various experiments and studies for the purpose of enhancing the effects of drugs such as thiabendazole, the present invention has found that the antibacterial effects of these drugs can be significantly enhanced by pulverizing these drugs into as fine particles as possible. I found out what I can do. [Problems to be Solved by the Invention] The present invention has been made based on the above-mentioned knowledge, and an object of the present invention is to provide bedding with significantly enhanced antibacterial and antifungal effects. [Means for Solving the Problems] The sanitary-treated bedding according to the present invention is provided by adding acrylic acid containing one or both of the above-mentioned antibacterial agent and fungicidal agent to the wool cotton filling. It is sprayed and impregnated with an aqueous ester copolymer resin emulsion to permanently suppress the growth of bacteria and fungi. In this invention, it is desirable that the bacteriostatic agent used has the following characteristics, depending on the type of batting and its purpose. (b) It has high resistance to bacteria and fungi, that is, it has a broad spectrum of antibacterial and antifungal properties. (b) Do not embrittle or damage fibers such as wool and cotton. (c) The drug does not leak out due to repeated washing or sweat. (d) No discoloration will occur due to the drug itself. (e) Extremely low skin irritation and oral toxicity. Due to the above characteristics, triclosan (2,4,4'-Trichloro-
2′-Hydroxydiphenyl Ether (for example, trade name Irgasan DP-300), and as a fungicide, thiabendazole [2-(4-thiazolyl)-
benzimidazole]. By the way, the above-mentioned triclosan and thiabendazole have very low solubility in water. Therefore, by pulverizing the particle size to as fine a particle as possible, it was possible to increase the dispersibility and significantly increase the resistance to bacteria and fungi. As a result, the particle size of the above drug has a maximum particle size of 12
micron (μm), minimum particle size 0.001 micron,
The average particle size is 2 microns to 0.01 micron, preferably the maximum particle size is 5 microns, and the minimum particle size is preferably 5 microns.
0.001 micron, average particle size 0.5 micron ~ 0.01
It is micron. On the other hand, an aqueous emulsion of an acrylic acid ester copolymer resin is mixed with the bacteriostatic agent in order to bond the bacteriostatic agent uniformly and firmly to the woolen cotton. The aqueous acrylic ester copolymer resin emulsion is self-crosslinking, has a much higher elongation than other film resins, and has appropriate film strength. Therefore, the breathability, bulkiness, and
The flexibility is not impaired, and when a futon or pad is manufactured using treated wool cotton as the filling, the blowing of the wool cotton from the side fabric, such as a smooth knit cotton fabric, can be completely suppressed. A particularly effective acrylic ester is a copolymer resin of ethyl and butyl ester, and an aqueous emulsion containing an ethyl acrylate copolymer resin as a main component is most suitable. In addition, the particle size of the aqueous acrylic ester copolymer resin emulsion should be as small as possible in terms of dispersibility of the drug, ease of dispersion from a spray gun, and elongation and strength of the formed film to produce better results. . For this reason, the average particle size of the emulsion is in the range of 0.5 micron to 0.001 micron, preferably 0.3 micron to 0.01 micron. In addition, various emulsifiers such as anionic emulsifiers and sucrose esters can be used to help disperse the aqueous emulsion of triclosan, thiabendazole or acrylic acid ester copolymer resin in water and to prevent separation or precipitation before spraying. In addition, agents that increase the added value of finished wool cotton futons and wool pads, such as anti-aging agents (e.g. dl-α-Tocopherol Acetate), moisturizers (e.g. cream ingredients such as cetanol), natural plant extracts (e.g. chamomile), etc. or yuzu oil, etc.), natural or synthetic fragrances, etc. can be added. [Examples] Examples of the present invention will be described below. Example 1 The sanitary-treated bedding according to Example 1 was
It is manufactured by using a woolen futon with wool cotton stuffed inside the side fabric (smooth knit made of cotton) and spraying an antibacterial agent on this filling.We will explain the manufacturing method and the results of its antibacterial properties. do. 0.2 parts by weight of triclosan (maximum particle size 3 microns, average particle size 0.2 microns) as an antibacterial agent and 22.0 parts ethyl acrylate and butyl copolymer resin (average particle size
0.1 micron) and 87.8 parts of water,
200 ml of the aqueous solution obtained by stirring was applied to the front and back surfaces of a batting (size: 2.2 m long x 1.1 m wide x 5 cm thick) made of multiple layers of thin film-like wool cotton that came out of a card machine. It was sprayed using a nozzle equipped with a filter. The antibacterial effect immediately after the treatment in the above example, the antibacterial effect after 3 months, the presence or absence of bad odor after 3 months, and the results of comparison by halo test (according to the AATCC description method) with those without sanitary processing. Shown in Table 1. However, A: Staphylococcus aureus (S. aureus) B: Escherichia coli (E. coli).

[Table] Furthermore, a portion of this antibacterial-treated wool cotton was cut, placed in a mesh bag, and washed using a household electric washing machine.
Table 2 shows the results of repeated washing 10 times and measurement of antibacterial activity against Staphylococcus aureus along with samples before washing.

[Table] As a result, it was found that there was no change in antibacterial properties even after repeated washing. In addition, although the cotton smooth knit used for the side fabric does not inherently have antibacterial properties, the side fabric of this cotton smooth knit was stuffed with antibacterial treated wool cotton as filling, and the results were measured 12 hours later. It was discovered that the side fabric also has antibacterial properties. The cause was found to be sublimation and adsorption of the antibacterial agent from the batting. As a result, it was found that the side fabric could be made antibacterial by simply filling it with antibacterial filling, without having to specifically apply antibacterial treatment to the side fabric. Further, as a result of testing the difference in antibacterial properties depending on the particle size of the sanitary finishing agent in Example 1 [halo test (mm)], it was found that as the particle size increases, the effect significantly decreases. That is, the maximum particle size is 3 microns, the average particle size
For 0.2 microns, Staphylococcus aureus (A)
The maximum particle size was 30 microns and the average particle size was 10.
In the case of microns, the results were 5 for Staphylococcus aureus (A) and 5 for E. coli (B). Next, a second embodiment of the present invention will be described. Example 2 The sanitary-treated bedding according to Example 2 is
It is a wool-cotton futon with wool cotton stuffed inside the side fabric (smooth knit made of cotton), and it is manufactured by spraying an antibacterial agent on this filling.I will explain the manufacturing method and the results of its antibacterial properties. . 0.1 parts by weight of triclosan as an antibacterial agent (maximum particle size 10 microns, average particle size 2 microns) and 0.2 parts thiabendazole (maximum particle size 10 microns, average particle size 2 microns) as a fungicide. 300 ml of an aqueous solution obtained by thoroughly mixing and stirring 25.0 parts of ethyl acrylate copolymer resin (average particle size: 0.2 microns) and 74.7 parts of water at room temperature as an emulsion was released from the card machine. A nozzle equipped with a 50-mesh filter was used to uniformly spray the front and back surfaces of a batting (size: 2.2 m long x 1.1 m wide x 5 cm thick), which was made by stacking thin membrane-like wool cotton in multiple layers, and heated to 140°C. 5 in a dryer heated to
It was allowed to self-crosslink for minutes and then dried. The antibacterial effect and antifungal effect immediately after the treatment in the above example, the antibacterial effect and antifungal effect after 3 months, the presence or absence of bad odor after 3 months, and the halo test ( AATCC
Table 3 shows the comparison results according to the description method. However, A: S. aureus B: E. coli C: T. mentagrophytes D: P. citrinum E: A. niger .

[Table] In addition, as a result of testing the difference in antibacterial properties depending on the particle size of the sanitary finishing agent in Example 2 [halo test (mm)], it was found that as the particle size increases, its effectiveness decreases significantly. . Table 4 shows the results after the processing.

[Table] [Effects of the Invention] As explained above, the bedding according to the present invention is made by spraying and impregnating the wool cotton filling with an antibacterial agent, and containing triclosan as an antibacterial agent to prevent mildew. Since the agent contained thiabendazole and the average particle diameter of triclosan and thiabendazole was 2 microns or less, it was possible to significantly improve the antibacterial and antifungal effects in bedding.

Claims (1)

[Claims] 1. Bedding that has undergone sanitary processing by spraying and impregnating wool cotton filling with an antibacterial agent, wherein the antibacterial agent contains triclosan as an antibacterial agent and thiabendazole as a fungicide, and the above-mentioned Bedding characterized in that the average particle diameter of triclosan and thiabendazole is 2 microns or less.