JPH0482965A - Antimicrobial textured yarn, knit or woven fabric and clothes' comprising the same yarn - Google Patents

Abstract

PURPOSE:To provide an antimicrobial textured yarn capable of giving an excel lent antimicrobial property to a specific site of a sport wear, etc., by coating with a chitosan at least the surface of the textured yarn before knitted or woven. CONSTITUTION:At least the surface of a textured yarn before knitted or woven is coated with a chitosan to provide an antimicrobial textured yarn. The chitosan is prepared by deacetylating chitin and has a deacetylation degree of >=50%, preferably >=80%. The antimicrobial textured yarn is preferably employed only in the prescribed site of a garment comprising plural sites.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an antibacterial processed yarn, an antibacterial knitted fabric made of the antibacterial processed yarn, and antibacterial clothing made of the antibacterial knitted fabric.

[Conventional technology]

Because sportswear, innerwear, arakuwear, socks, etc. come into direct contact with the body, they are often contaminated with sweat, sebum, etc., and also generate odors. Most of these odors are generated by mold, bacteria, etc., and therefore, in order to suppress the generation of these odors, it has become necessary to impart so-called antibacterial properties to clothing.

There are two main types of antibacterial agents used to impart antibacterial properties: one is chemically synthesized drugs such as quaternary ammonium salts, metal compounds, and halogen compounds, and the other is natural drugs such as chitosan-based polymers. It is a refined product.

These antibacterial agents are made into a solution or dispersion treatment liquid,
The treatment solution is applied to the fabric by immersing the fabric in this treatment liquid and performing a fixing treatment such as heating as necessary.

In addition, when using a chemically synthesized drug as an antibacterial agent, for example, it is possible to knead the antibacterial agent into a molten polymer of synthetic fibers such as polyamide fibers and melt-spun them to obtain fibers that have antibacterial properties in the fiber itself. Are known. It is also known to blend the obtained fibers with antibacterial properties with other fibers.

[Problem to be solved by the invention]

As mentioned above, there are various antibacterial agents, but chitosan-based polymers (chitosan obtained by deacetylating chitin, hereinafter referred to as chitosans) are natural products and are preferred for their safety. It also has good antibacterial properties and is considered the most preferred antibacterial agent for use in clothing. However, chitosan cannot be kneaded into a polymer like the above-mentioned polyamide fiber for reasons such as heat resistance and yellowing.

Therefore, conventionally, when using chitosan as an antibacterial agent for clothing, a method has been adopted in which chitosan is used as a treatment liquid in the form of a solution or dispersion and the entire fabric, such as a knitted fabric, is treated with the chitosan.

On the other hand, for clothing that requires antibacterial properties, antibacterial properties are not required for the entire garment, but for the toes of socks, the back side that comes into contact with the skin, and the back side of underwear. Other areas do not secrete much sweat or sebum, and do not generate much odor, so it is meaningless and uneconomical to provide antibacterial properties to these areas. However, when chitosan is used, as mentioned above, the chitosan is applied to the entire fabric such as knitted fabric, so there was waste in the conventional production of antibacterial clothing using chitosan. .

The present invention solves the above-mentioned problems that have been an obstacle to economically obtaining clothing that has antibacterial properties, and provides an antibacterial property that makes it possible to produce clothing that has excellent antibacterial properties and is economical. The object of the present invention is to provide a processed yarn, an antibacterial knitted fabric made of such an antibacterial processed yarn, and antibacterial clothing made of such an antibacterial knitted fabric.

[Failure to solve the problem]

The antibacterial processed yarn according to the present invention is an antibacterial processed yarn obtained by post-processing the yarn before it is knitted or woven, and chitosan is added to at least the surface of the processed yarn. It is characterized by The chitosans mentioned here are chitosan obtained by deacetylating chitin, and the degree of deacetylation is 50% or more, preferably 80%.
It is good if it is above. By using chitosans, which are natural products, antibacterial processed yarns with excellent safety and biocompatibility, as well as antibacterial clothing, can be obtained.

When applying chitosan to threads, first, a treatment solution is prepared in which chitosan is dissolved in an acid or a special solvent, or an emulsion liquid is prepared in which chitosan is finely dispersed. Various additives may be added to this treatment liquid to improve product performance such as fixation, texture, water absorption, and antistatic properties. For example, chitosan is dissolved in water in an acidic atmosphere and mixed with resin such as acrylic resin or epoxy resin to improve adhesion, or chitosan is pulverized using a sand grinder or the like. A processing agent can be prepared by removing large particles from the resulting powder, emulsifying it using a surfactant, and then using the above-mentioned resin in combination. However, the method for producing the treatment liquid of the present invention is not limited to the above method.

The method of applying the treatment liquid to the yarn may be any method as long as it can apply chitosan to at least the surface of the yarn, such as A, continuously supplying the yarn to the treatment liquid tank. After soaking, heat treatment is usually performed at about 100°C to fix the chitosan.

B. A method in which the thread is made into a thread, immersed whole in a treatment liquid bath, and then heat-treated.

A method of knitting into a C9 knitted fabric, applying a treatment liquid to the knitted fabric, heat-treating it to produce a knitted fabric to which chitosan has been applied, and unraveling this knitted fabric to produce a yarn to which chitosan has been applied.

D. A method of applying chitosan to yarn using a cheese dyeing method, etc. can be adopted.

The amount of chitosan added to the yarn varies depending on the type of clothing intended, but is approximately 0.01% to 1.0% by weight.
If it is less than 0.01%, the antibacterial effect will be insufficient, and if it is more than 1.0%, there will be disadvantages such as poor hand feel, and it is economically undesirable.

The yarns used to obtain the antibacterial processed yarn of the present invention include yarns made of synthetic fibers such as polyamide fibers and polyester fibers.2. Threads made of recycled fibers such as guplar and viscose rayon, and threads made of natural fibers such as cotton, wool, and silk can be used.

These yarns can be used not only as raw yarns but also as covered yarns with elastic fibers, crimped yarns, or twisted yarns with the same or other types of yarns.

The antibacterial knitted fabric which is the second object of the present invention is characterized in that the antibacterial processed yarn according to claim 1 is used for at least a part of the constituent yarns.

If the antibacterial knitted fabric is socks, as mentioned above, if only the toes and the soles of the feet that require antibacterial properties are knitted with antibacterial processed yarn, socks with high antibacterial properties and high practicality can be economically produced. be able to.

When the antibacterial knitted fabric is used as underwear, antibacterial processed yarn may be used only on the back side that comes into contact with the skin, and ordinary polyamide fiber yarn or cotton yarn may be used on the front side.

In the case of antibacterial textiles, antibacterial processed threads may be used only in the parts of clothing made from the textiles that are desired to have antibacterial properties. For example, use antibacterial treated yarn for only the appropriate number of the total warp yarns or the appropriate number of the total weft yarns, and use ordinary yarn (various yarns that are not antibacterial treated) for the other yarns. By weaving using this method, a fabric partially imparted with antibacterial properties can be obtained. Furthermore, antibacterial textured yarn may be used only in either the warp or the weft.

Antibacterial processed yarn may be used for all of the yarns constituting the antibacterial knitted fabric. In this way, when the entire knitted fabric is made of antibacterial processed yarn, it is better to make the knitted fabric using antibacterial processed yarn than to apply antibacterial treatment to the knitted fabric, which results in a smaller lot size of the final product. This is preferable because it can be quickly commercialized.

Antibacterial clothing, which is the third object of the present invention, is characterized in that the antibacterial knitted fabric according to claim 2 is used only in a predetermined part of the clothing, which is composed of a plurality of parts.

Clothing here refers not only to sportswear, innerwear, outerwear, etc., but also to everything that is manufactured from knitted fabrics through joining methods such as sewing, and does not include just clothing. This includes hats, shoes, etc.

When the clothing is sportswear, the knitted fabric according to claim 2, which is knitted only with the antibacterial processed yarn according to claim 1, is used for the front body and the back body, and the knitted fabric according to claim 2, which is knitted only with the antibacterial processed yarn according to claim 1, is used for the sleeves and other parts. Alternatively, a sports shirt may be sewn using a knitted fabric using the antibacterial processed yarn according to claim 1 only on the back side of the upper part of the front body and the back body. Good too. The placement location of the antibacterial processed yarn may be appropriately selected depending on the intended garment, and such selection can be easily made as long as the antibacterial processed yarn of the present invention is used.

In addition, when the clothing is a woven product, antibacterial properties can be similarly imparted to necessary parts.

Thus, according to the present invention, it is possible to economically provide clothing that has excellent antibacterial properties using chitosans only in the necessary areas.

〔Example〕

The present invention will be described in detail below based on examples shown as examples of the present invention. Although the following examples are all knitted products, it goes without saying that the present invention can also be applied to woven products.

◎ Preparation of treatment solution 5 g of deacetylated chitin of 80% or more (daichitosan manufactured by Dainichiseika Chemical Co., Ltd.) was dissolved in a solution containing 20 g of acetic acid and 75 g of water.

7 parts of the solution, 4 parts of acrylic resin (Riken Resin RJ-36 manufactured by Miki Riken Co., Ltd.), and a silicone compound (
4 parts of Parasolve 272) (manufactured by Ohara Palladium Co., Ltd.) and 0.4 part of Baracara P (manufactured by Ohara Palladium Co., Ltd.), an amine compound (manufactured by Ohara Palladium Co., Ltd.) were used, and water was added to make 100 parts.

The chitosan concentration in the treatment liquid was 0.35%.

◎ The following six types of antibacterial processed yarns were made using the above treatment solution.

(2) A crimped yarn of 70 denier 24 filament polyamide fiber is passed continuously through the above treatment solution and then squeezed with a mangle. Thereafter, heat treatment was continuously performed for 20 seconds using a heat setting machine adjusted to 110°C to obtain an antibacterial processed yarn.

The pick-up of the processing liquid was 100%.

The amount of chitosan attached was 0.35%.

■ Take the elastic yarn made by covering the 20 denier spandex yarn with the crimped yarn of 40 denier 34 filament polyamide fiber into a skein, soak the skein in the above treatment solution, squeeze it, and heat it at 120°C. was dried for 5 minutes.

The pick-up of the treatment liquid was 120%.

The amount of chitosan attached was 0.42%.

(2) Polyamide fiber 15 denier 5 filament was treated in the same process as in (2) above.

The pick-up of the treatment liquid was 50%.

The amount of chitosan attached was 0.175%.

(2) A 50-denier 24-filament polyester fiber was knitted into a tube, treated with steam at 100°C for 10 minutes, immersed in the above treatment solution, squeezed with a mangle, and dried with dry heat at 100°C for 5 minutes. This knitted fabric was unwound to obtain an antibacterial processed yarn.

The pick-up of the processing liquid was 60%.

The amount of chitosan attached was 0.21%.

■ An 80/2 cotton thread was placed in a skein, and an antibacterial treated system was obtained in the same manner as in (■) using the skein dyeing procedure.

The pick-up of the treatment liquid was 150%.

The amount of chitosan attached was 0.525%.

■ A crimped yarn of 70 denier 24 filament polyamide fiber was wound onto a hollow bobbin, treated with the treatment liquid of the present application in the manner of commonly used so-called cheese dyeing, and then dried at 100°C. As a result, antibacterial processed yarn was obtained.

The pick-up of the processing liquid was 100%.

The amount of chitosan deposited was 0.35%.

◎ Using the above-mentioned antibacterial processed yarns ■ to ■, the final products shown in Table 1 were made in combination with the mating yarns, and the antibacterial effect of the antibacterial parts was evaluated by the bacterial count method, and the obtained results were It is shown in Table 1.

As shown in Table 1 below, antibacterial clothing obtained using the antibacterial processed yarn to which chitosan of the present invention has been added exhibits excellent antibacterial properties in practical use. Furthermore, since the usage ratio of antibacterial processed yarn in the product is 50% or less, although it varies depending on the product, it is possible to economically provide clothing with practically valuable antibacterial properties.

〔Effect of the invention〕

Since the antibacterial processed yarn of the present invention uses chitosan, which is a natural product, it has excellent antibacterial properties, safety, and biocompatibility. Furthermore, since it can be obtained by applying antibacterial treatment to yarn available on the market, it has the advantage of being able to be produced in extremely small lots. Moreover, since antibacterial properties can be imparted only to the parts necessary for the textiles or clothing, it is extremely advantageous economically.

Claims (1)

[Scope of Claims] 1. Antibacterial processed yarn obtained by post-processing yarn, characterized in that chitosan is added to at least the surface of the processed yarn. thread. 2. An antibacterial knitted fabric characterized in that the antibacterial processed yarn according to claim 1 is used for at least a part of the constituent yarns. 3. Antibacterial clothing, characterized in that the antibacterial knitted fabric according to claim 2 is used only in a predetermined part of the clothing, which is composed of a plurality of parts.