JPH05106199A - Antimicrobial fiber - Google Patents

Abstract

PURPOSE:To obtain a fiber material showing an antimicrobial effect, a deodorizing effect and an adsorbing effect. CONSTITUTION:An inorganic silicon compound is supported in the inside of a fiber and the resultant inorganic silicon compound-containing fiber is immersed in an aqueous solution containing an aluminate. The fiber is subsequently immersed in an aqueous solution containing one or more compounds selected from water-soluble salts of copper, silver and zinc. Thereby, the objective fiber showing an antimicrobial effect, a deodorizing effect and an adsorbing effect can be obtained.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a fiber having antibacterial properties, deodorizing properties, adsorptivity, and the like.

[0002]

2. Description of the Related Art A technique for treating cellulosic fibers with an inorganic metal salt compound for the purpose of imparting antibacterial or deodorant properties is disclosed in JP-A-61-136436.
Technology for mixing hydrous magnesium silicate clay material with cellulose fibers, technology for adsorbing copper or / and zinc ions on carboxymethyl cellulose fibers disclosed in JP-A-63-270900, basicity disclosed in JP-A-63-235571. Technique for adsorbing powder of copper carbonate on cellulose fiber, copper hydroxide in JP-A-62-238866 or method for adsorbing copper oxide powder on cellulose fiber, antibacterial metal in JP-A-2-153723 A technique of containing silicate particles ion-exchanged with ions in a viscose sponge together with reinforcing fibers, at least one metal selected from the group consisting of silver, copper and zinc described in JP-A-2-175901 or a compound thereof, A technique for dispersing liquid polyester and a thermoplastic polymer and processing the spun fiber into socks. The zeolite which holds a metal having a bactericidal action in the 2-238900 on the surface of the paper, or making paper which contains therein technique, JP-A 3-121
There is a technique in which regenerated cellulose in 145 is mixed with a vinyl acetate-maleic acid copolymer so as to have an ion exchange property.

It is also known that fibers treated with a metal compound such as copper, silver and zinc show antibacterial properties and deodorizing properties (for example, Japanese Patent Laid-Open No. 2-153723). It has long been known that silicon compounds such as silica gel have an ion exchange property. It is also known that treating silica gel with an aqueous solution containing aluminate improves the ion exchange capacity (Iler, RH, The Chemistry of Si).
lica, p. 576, Wiley-Interscience, New York, 1979).

[0004]

[Problems to be Solved by the Invention] To provide a fiber filled with an inorganic substance having properties such as antibacterial property, deodorant property and adsorptive property.

[0005]

The antibacterial fiber of the present invention comprises:
An inorganic silicon compound is supported inside the fiber, and then this inorganic silicon compound-supported fiber is immersed in an aqueous solution containing an aluminate, and then an aqueous solution containing at least one selected from water-soluble salts of copper, silver, and zinc is used. Obtained by immersion treatment.

As a method for producing the inorganic silicon compound-supporting fiber, which is a raw material fiber of the antibacterial fiber of the present invention, for example, the method shown in Japanese Patent Application No. 2-121221 or Japanese Patent Application No. 2-162946 can be used. In the inorganic silicon compound-supported fiber produced by these methods, most of the inorganic silicon compound is present inside the fiber. The inside of the fiber referred to herein means the inside of the fiber, that is, the inside of the polymer substance constituting the fiber. It also includes the case where an inorganic silicon compound is present in the cell lumen (lumen) that is present in many lignocellulosic fibers.

The raw material fibers of the antibacterial fiber of the present invention are:
50 to 100% of silicon compound supported on fibers
However, it is desirable that they are present inside the fiber (inside the substance). If 50% or more of the supported amount of the inorganic silicon compound is supported on the outside of the fiber, a large amount of the inorganic silicon compound will fall off when the fiber is processed into a product or while the product is in use, and sufficient performance can be exhibited. Disappear. The proportion of the inorganic silicon compound supported on the fiber is preferably about 5 to 150% of the organic content of the fiber in terms of solid content.

When a substance is supported on the fiber in the form of powder or the like, a binder is often used for the purpose of preventing the substance from falling off, but in the case of an inorganic silicon compound having an adsorbing property such as silica gel, the use of the binder results in silica gel. However, there is a problem that the binder adheres to the fine pores of and the adsorption performance is deteriorated. The antibacterial fiber of the present invention solves these drawbacks.

The above inorganic silicon compound-supported fiber is immersed in an aqueous solution containing an aluminate. The water content of the fiber before soaking is preferably about 0 to 90%. As the aluminate, sodium aluminate, potassium aluminate and the like are preferable. The concentration of the aqueous solution of these aluminates is not particularly limited, but a concentration of about 0.1 to 10% is preferable. There is no particular limitation on the immersion temperature or time.
The fibers dipped in the aluminate are drained, washed with water, and dipped in a water-soluble metal salt selected from copper, silver and zinc. The water content of the fiber before soaking is preferably about 0 to 90%.
The concentration of the liquid is not particularly limited, but is 0.01 to 1 from the economical aspect.
A concentration of 0% is preferably used. There is no particular limitation on the immersion temperature or time.

[0010]

EXAMPLES The present invention will be described in more detail below with reference to examples. Example 1 Production of Inorganic Silicon Compound-Supporting Fiber 350 g of conifer bleached kraft pulp
C. S. It was beaten with F, dehydrated to a pulp concentration of 30%, and immersed in 5 liters of No. 3 sodium silicate (molar ratio 3.1, 42 Baume) for 3 hours. Dip pulp into pulp solids, 40
% By a press and then immersed in 5 L of 1N sulfuric acid at room temperature for 1 hour. Then, the pulp was drained and washed with water. The ash content of this pulp was 35%. Addition of antibacterial property This silica-supported pulp is dehydrated to a pulp concentration of 30%,
Immerse in 5 liters of 1% sodium aluminate aqueous solution for 1 hour at room temperature, wash with water, and then dehydrate again to a pulp concentration of 30%,
It was immersed in 5 l of a 0.5% copper sulfate aqueous solution for 1 hour. The pulp that had been soaked was washed with water and a hand-made sheet of 60 g / m ² was prepared by a conventional method.

Antibacterial Test This sheet was placed on L medium, Escherichia coli suspended in physiological saline was applied, and the cells were cultured at 37 ° C. for 24 hours. As a result, the growth of bacteria was observed on the sheet. Was not recognized. Deodorizing Test This sheet was subjected to an antifungal test according to JIS Z-2911 method. As a result, both the wet method and the dry method showed antifungal resistance of fungus resistance 1. This sheet was put in a 5 Tedlar bag, filled with 2 L of air, and 2 ml of ammonia gas was injected, and the ammonia gas concentration after a predetermined time was measured by a detector tube. The results are shown in Table 1.

[0012]

[Table 1]

[0013]

EFFECTS OF THE INVENTION According to the present invention, an antibacterial / deodorant fiber having a durable property, which retains an inorganic substance inside the fiber, does not drop off the components carried during processing and during use, was obtained. .. The fiber according to the present invention is less likely to drop off the inorganic substance than the fiber obtained by simply adhering the powdery inorganic substance to the fiber. Further, in the case of the fiber in which the powdered inorganic substance is simply attached to the fiber, an adhesive agent is often used when the inorganic substance is attached, and the performance of the product may be deteriorated in some cases. However, the fiber of the present invention does not have such a worry.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Internal reference number FI Technical display location D06M 23/00 D21H 17/67 27/00 7199-3B D06M 21/00 C 7199-3B D21H 5 / 00 D 7199-3B 3/78

Claims (1)

[Claims] 1. An inorganic silicon compound is supported inside the fiber, and then the inorganic silicon compound-supported fiber is immersed in an aqueous solution containing an aluminate, and then at least one selected from water-soluble salts of copper, silver and zinc. An antibacterial fiber characterized by being dipped in an aqueous solution containing various types.