JP2001049541A - Laminated yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminated yarn that can retain the antimicrobial activity, even after it repeatedly undergoes washing, and shows excellent heat accumulation prevention and antistatic properties. SOLUTION: A synthetic resin film 11 is metallized with an antimicrobial metal to form the metallized layer 12 and a pair of the metallized films are laminated so that the metallized layers 12 may come to the inner surface and the resultant laminated body of a sandwich structure is cut in the longitudinal direction into strips 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated yarn having a laminated structure, and more particularly to a laminated yarn excellent in various properties such as antibacterial property, washing resistance, antistatic property and anti-heat property.

[0002]

2. Description of the Related Art In recent years, products having antibacterial properties have been demanded due to the development of the concept of hygiene, and clothes and cloths having antibacterial properties have been demanded. These antibacterial clothes and cloths use antibacterial threads having antibacterial properties as their materials.

[0003] As such antibacterial yarn, conventionally, an ultrafine metal yarn formed by elongating silver or copper, a plated yarn obtained by plating silver or copper on the surface of a synthetic fiber or the like, or an antibacterial agent is kneaded. Antibacterial agent-containing yarn or the like obtained by swelling or coating is used.

On the other hand, from the viewpoint of reducing the discomfort of a wearer due to static electricity and preventing electrostatic damage to electronic products due to static electricity, various antistatic textile products are used. Conventionally, those containing carbon fiber yarns have been used.

[0005]

However, in the case where these conventional ultrafine metal yarns or carbon fibers are used for textile products and various properties such as antibacterial properties are to be imparted to the textile products, the following are mentioned. There was such a problem.

[0006] First, since the surface of ultrafine metal yarn or plated yarn is oxidized and blackened due to aging or bleaching agents, when these are used for textile products, the appearance of the textile product deteriorates, There is a problem that the property is reduced. In addition, since the metal parts of these ultrafine metal yarns and plated yarns are easily heated by infrared rays, etc., there is also a problem that low-temperature burns occur when wearing fiber products containing these as a material and performing infrared thermal treatment, for example. there were.

[0007] Further, since the antibacterial agent is eluted by washing with the antibacterial agent-containing yarn, the antibacterial property is reduced by repeated washing,
There was a problem that antibacterial properties were lost in a short period of time.

Further, since the carbon fiber yarn of the antistatic fiber is a black yarn, usable products are limited in view of the appearance of the product. Further, even when these plural yarns are combined, antibacterial properties and antistatic properties are obtained. It has been difficult to produce a fiber product having a plurality of properties such as heat-preventing property and aesthetic appearance of a product.

[0009] Therefore, an object of the present invention is to provide a laminated yarn which does not decrease its antibacterial activity even after repeated washing, has an excellent heat-preventing function and an antistatic function, and has an excellent appearance.

[0010]

That is, in the laminated yarn according to the present invention, an antibacterial metal is vapor-deposited on a synthetic resin film to form a vapor-deposited film. It is characterized in that it is formed by cutting the laminated body having a sandwich-like structure, which is adhered so as to be long and narrow, in the longitudinal direction.

Further, a coat layer may be provided on the surface opposite to the surface on which the deposited film of the synthetic resin film is formed.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a view schematically showing the structure of a laminated yarn 1 according to the present invention. As shown in FIG. 12 is a sandwich-shaped yarn sandwiching the pin 12, and is formed by the following procedure.

First, an antibacterial metal is vapor-deposited on the synthetic resin film 11 by a vacuum vapor deposition method, an ion vapor deposition method or the like, and a vapor-deposited film 12 is formed. The thickness of the deposited film 12 is about 500 to
It is about 1,000 angstroms, and is preferably 500 angstroms from the viewpoint of product cost. Next,
The synthetic resin films 11 on which the vapor-deposited films 12 are formed are adhered to each other with an adhesive such that the vapor-deposited films are on the inner side, thereby producing a laminate having a sandwich structure in which the antibacterial metal is sandwiched between the synthetic resin films. Finally, the laminated body is cut to a width of 0.1 to 1.0 mm in the longitudinal direction, and the laminated yarn 1 is completed.

Here, the synthetic resin film is a film having a thickness of about 10 to 100 microns made of polyester, polyethylene, polypropylene or the like. The antibacterial metal is a metal having ion exchangeable antibacterial property, such as silver, copper, and zinc. Among them, the use of silver is most suitable because of its high antibacterial performance, in which rust hardly occurs. Further, as the above-mentioned adhesive, various adhesives such as polyurethane-based and polyester-based adhesives can be used.

As described above, the laminated yarn 1 is a yarn having a sandwich-like structure in which the vapor-deposited film 12 made of the antibacterial metal is sandwiched between the synthetic resin films 11, and has a color of the antibacterial metal.

Here, since the side surface of the vapor-deposited film 12 is exposed to the outside, it is oxidized and chlorinated, but rubs against adjacent fibers, and the oxidized portion is removed. In addition, since the portion other than the side surface of the vapor-deposited film 12 is protected by the synthetic resin film 11, it is not oxidized or salified. For this reason, even if washing is repeatedly performed or a bleach is used, the antibacterial activity is reduced or the deposited film 12 is blackened,
The appearance of the textile does not deteriorate. Further, even when heat is applied from the outside, most of the metal vapor-deposited film 12 is covered with the synthetic resin film, so that the temperature of the laminated yarn 1 rises sharply and does not cause low-temperature burns. Furthermore, the laminated yarn 1
Even if static electricity occurs in clothes or the like in which woven fabric is woven, the deposited film 12
Since the static electricity moves to the outside through the device, the effect of not charging the static electricity is also exerted.

[0018]

Next, the laminated yarn according to the present invention will be manufactured and subjected to various tests, and the present invention will be described in more detail.

(1) Production of Laminated Yarn Silver ions are deposited on a polyester film having a thickness of 12 microns (manufactured by Toyobo Co., Ltd.) by an ion deposition method.
A 500 Å thick deposited film is formed. Next, the polyester film having the vapor-deposited film is adhered to each other with a polyester-based adhesive so that the vapor-deposited film is on the inner side, thereby producing a laminate having a sandwich structure. Finally, the laminate was cut into a length of 226 microns in the longitudinal direction to form a laminated yarn, which was subjected to the following various tests.

(2) Antibacterial test An antibacterial test was carried out by a shake flask method using a toweling fabric in which a laminated yarn was woven at an interval of 6 mm on a ground yarn.
In addition, Klebsiella pneumoniae was used as a test bacterium, and an unprocessed cloth (made of nylon) was used as an experimental control. Table 1 shows the results.

[0021]

[Table 1]

Next, an antibacterial test was conducted by a shake flask method using a toe portion of a sock in which a laminated yarn was woven at intervals of 5 mm. In addition, Klebsiella pneumoniae was used as a test bacterium, and an unprocessed cloth (made of nylon) was used as an experimental control. Table 2 shows the results.

[0023]

[Table 2]

Further, an antibacterial test was carried out by using a pantyhose in which the laminated yarn was woven at intervals of 2 mm by the SEK bacteria count method. Trichophyton was used as a test bacterium, and untreated cloth (made of nylon) was used as an experimental control. Table 3 shows the results.

[0025]

[Table 3]

As is clear from Tables 1, 2 and 3, when the same number of test bacteria were inoculated and the number of remaining bacteria after a certain period of time was compared, the antibacterial activity between the sample and the experimental control was lower. There was a sufficient difference, and it was recognized that the laminated yarn had a sufficient antibacterial effect. Also, the antibacterial spectrum of the laminated yarn,
From bacteria (prokaryotes) Klebsiella pneumoniae to fungi (eukaryotes)
It was found to be wide ranging from Trichophyton.

(3) Washing resistance test After washing the toweling in which the laminated yarn was woven at a spacing of 4 mm to the ground yarn a specified number of times, an antibacterial test was conducted by a shake flask method to examine the change in the antibacterial power due to the washing. In addition,
Klebsiella pneumoniae was used as a test bacterium. Table 4 shows the results.

[0028]

[Table 4]

Next, a food wrap cloth in which the laminated yarn was woven at intervals of 5 m was washed a specified number of times, and an antibacterial test was conducted by a shake flask method to examine a change in antibacterial power due to the washing. Escherichia coli was used as a test bacterium. Table 5 shows the results.

[0030]

[Table 5]

Further, after the food wrap cloth, in which the laminated yarn was woven at intervals of 5 m, was washed a specified number of times, an antibacterial test was conducted by the SEK unified test method, and the change in the antibacterial power due to the washing was examined. In addition, Escherichia coli O-157 was used as a test bacterium, and cotton gauze was used as an experimental control. Table 6 shows the results.

[0032]

[Table 6]

As is clear from Tables 4, 5 and 6, it was found that the antibacterial activity of the laminated yarn did not decrease even after repeated washing, but rather increased as the washing was repeated.

(4) Chlorine bleach resistance test Approximately 10 grams of the laminated yarn was bundled, and the color change after bleaching for a specified number of times was observed. The bleaching solution was prepared by adding 300 ml of kitchen bleach to 300 ml of distilled water, and the experiment was carried out at different temperatures in order to see the difference due to the temperature. Table 7 shows the results.

[0035]

[Table 7]

As is clear from Table 7, it was confirmed that the laminated yarn was not blackened even when the bundled laminated yarn was bleached, particularly under the harsh conditions of 50 ° C. for 30 minutes. .

(5) Heat-prevention function test A T-shirt is made from a sheet of jersey in which laminated yarns are knitted at intervals of 5 m, and heated from about 20 cm above the T-shirt with an infrared lamp, and the temperature change on the surface and in the fabric is examined. Was. The results are shown in the graph of FIG. As an experimental control, a T-shirt containing no laminated yarn was used.

As is apparent from FIG. 2, it was found that the wetting of the laminated yarn did not decrease the heat retention preventing function, and the temperature increased only to the same extent as the experimental control.

(6) Antistatic function test Using the T-shirt manufactured in (5), JIS 109
An antistatic function test was performed according to the method described in 4-5. The measurement conditions are 20 ° C. and 20% RH. Table 8 shows the results. As an experimental control, a T-shirt containing no laminated yarn was used.

[0040]

[Table 8]

As shown in Table 8, the capacity and voltage of the static electricity accumulated in the T-shirt were reduced, and it was found that the antistatic function was improved by weaving the laminated yarn.

The present invention is not limited to the above embodiments and examples, and various changes can be made within the technical scope described in the claims.

For example, as shown in FIG. 3, a coat layer 23 may be provided outside the synthetic resin film 21 constituting the laminated yarn 2. Examples of the material of the coat layer 23 include titanium oxide and a silicon compound having a photocatalytic function. When the titanium oxide is used for the coat layer 23, the bacteria killed by the antibacterial metal of the vapor-deposited film 22 is photocatalyzed. It can be decomposed and detoxified by active oxygen generated by (titanium oxide), and when a silicon compound is used for the coating layer 23, the heat retaining function of the laminated yarn 2 can be enhanced.

As shown in FIG. 4, a layer 3 of a pigment such as titanium oxide is interposed between the deposited film 32 and the synthetic resin film 31.
3 may be provided. As a result, the metal color of the antibacterial metal is erased, so that the antibacterial metal can be used for a textile product such as a white coat in which a metal-colored thread cannot be used.

Further, the laminated yarn may be twisted with nylon woolly or the like and used as a twisted yarn. Thereby, the touch of the laminated yarn can be improved.

Further, the laminated yarn can be used as a material for scouring products for toilets and the like by increasing the thickness of the synthetic resin film in addition to cloth products.

[0047]

As is clear from the above description, the laminated yarn according to the present invention has a sandwich-like structure in which both sides of a vapor-deposited film made of an antibacterial metal are sandwiched between synthetic resin films, and therefore has an external appearance. It is beautiful, has high antibacterial properties, does not decrease its antibacterial ability even after repeated washing, and has a heat retention function and an antistatic function. Further, by providing a coat layer on the outside of the synthetic resin film, a decomposition function by a photocatalyst and a heat retaining function could be provided.

[Brief description of the drawings]

FIG. 1 is a view schematically showing a structure of a laminated yarn.

FIG. 2 is a graph showing the results of a heat retention prevention function test.

FIG. 3 is a diagram schematically showing the structure of another laminated yarn.

FIG. 4 is a diagram schematically showing the structure of another laminated yarn.

[Explanation of symbols]

 Reference Signs List 1 laminated yarn 11 synthetic resin film 12 vapor-deposited coating

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Michiko Omori 18-18-517 Minamimiyacho, Ashiya-shi, Hyogo (72) Inventor Sataro Shimazaki 3-11-16-307 F, Tatsuminami, Ikuno-ku, Osaka-shi, Osaka F Terms (reference) 4L036 MA04 MA05 UA08 UA26

Claims (2)

[Claims] An antibacterial metal is vapor-deposited on a synthetic resin film to form a vapor-deposited film, and the formed synthetic resin films are adhered to each other so that the vapor-deposited film is on the inner side, and are bonded to form a sandwich-like structure. A laminated yarn formed by cutting a laminated body elongated in the longitudinal direction. 2. The laminated yarn according to claim 1, wherein a coat layer is provided on a surface of the synthetic resin film opposite to a surface on which the deposited film is formed.