JPS59163438A - Covering yarn and production thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a covering yarn that has appropriate elongation, feels good on the skin, and has high frictional resistance, and a method for manufacturing the same.

Conventionally, in order to prevent the opening of socks from slipping off,
Various methods have been proposed in which a rubber-like elastic yarn is woven into the perforation to provide a slip-preventing portion.

The first method is to knit polyurethane elastic yarn together with other yarns (see Japanese Patent Publication No. 83705/1983). However, although this method improves the knitting performance, it has the disadvantage that the expansion and contraction of the polyurethane elastic yarn is influenced by other yarns.

The second method is to double cover the rubber thread with a fine insoluble thread to stop its elongation and then knit it. However, the double covered yarn obtained by this method has low frictional resistance, and therefore the anti-slip effect is not as strong.

Thirdly, there is a method in which the rubber thread is directly threaded into the inner periphery of the perforation with an appropriate width and knitting structure (Japanese Patent Laid-Open No. 57-1
(See Publication No. 12403). However, although this method does have an abrasion-preventing effect, it does not feel good on the skin because it comes into direct contact with the skin, and it also has too much elongation, which may cause it to stick to the skin, reduce its strength, and cause discoloration, resulting in poor quality. I don't like it very much. Furthermore, direct thinning of rubber threads has drawbacks such as causing various operational troubles and requiring special equipment.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a covering yarn that has appropriate elongation, feels good on the skin, and has high frictional resistance, and is particularly effective in preventing the perforation of socks from slipping off, and a method for manufacturing the same. shall be.

The present invention has the following configuration to achieve the above object. That is, in the present invention, the fineness is 140 to 1200.
The number of coils (T/
A covering yarn characterized by being wound with M) and a synthetic rubber-like elastic yarn having a fineness of 140 to 1200 deniers are subjected to a specific non-draft while the inelastic fiber yarn is wrapped around the synthetic rubber-like elastic yarn. This is a method for producing ring yarn, which is characterized by wrapping it around a ring.

Here, the number of wound coils (T/M) is 50T/M≦the number of wound coils (T/M)≦50. OT/M is satisfied, and the number of wound coils (T/M) is an inelastic fiber yarn when a tension of 0.1F/denier is applied to the covering yarn based on the fineness (denier) of the synthetic rubber-like elastic yarn. This refers to the number of coils wound per meter of strip. The present invention will be explained in detail below. In the present invention, the fineness of the synthetic rubber-like elastic yarn used as the core yarn must be 140 to 1200 deniers. However, this is because, in combination with the structure in which the inelastic fiber threads are wound in one direction, an appropriate amount of frictional resistance is generated.

If it is less than 140 denier, the frictional resistance will be small, while if it exceeds 1200 denier, it will be difficult to obtain a suitable elongation and the skin will not be smooth. The term "synthetic rubber-like elastic yarn" refers to the exclusion of natural rubber elastic yarn, and is used to provide appropriate elongation and feel to the touch. An example of the synthetic rubber-like elastic thread is a polyurethane elastic thread. Among these, polyester threads and polyurethane elastic threads are preferred because they are less susceptible to aging and have better fit.

Next, the inelastic fiber yarn wound in one direction around the synthetic rubber-like elastic yarn refers to yarn other than natural rubber elastic yarn 1 synthetic rubber-like elastic yarn, among which 5
~50 denier thermoplastic fiber yarn is preferred;
Cotton yarn with a fine count of 0/1'S or more and worsted yarn with a fine count of 1/4σS or more are preferable. This is because by selecting inelastic fiber threads of appropriate thickness, covering threads that are extremely soft to the touch can be obtained. Among the above-mentioned thermoplastic fiber yarns, multifilament yarns of polyamide yarn fibers and multifilament yarns of polyester yarn fibers are preferred. This is to increase frictional resistance and provide appropriate elongation.

Among polyester war fibers, polyester thread fibers dyeable at normal pressure, particularly polyester thread fibers dyeable with normal pressure cation dyes, are preferred. This is because it can be dyed under normal pressure when it is exposed and dyed, so it does not adversely affect the synthetic rubber-like elastic thread. Here, the pressure-dyeable polyester fiber is a fiber obtained by spinning a polyester containing 80 mol or more of alkylene terephthalate repeating units such as ethylene terephthalate and butylene terephthalate. Examples of normal pressure dyeable polyester fibers include normal pressure fractional dye dyeable fibers obtained by ultra-high speed spinning of alkylene terephthalate polyesters, and 5-gold m-sulfoisophthalic acid components in proportion to 0.0% of the total acid components. Atmospheric pressure cation dye dyeable fiber obtained by normal spinning or high-speed spinning of a 5-6 mole copolymerized alkylene terephthalate polyester, containing other acid components such as isophthalic acid and adipic acid in addition to the 5-metal sulfoisophthalic acid component. , sebacic acid, etc., or by copolymerizing a glycol component in addition to the 5-metal sulfoisophthalic acid component, appropriately selected from diethylene glycol, neopentyl glycol, neopentyl glycol-alkylene oxide adduct, etc. Spinning polyester obtained by copolymerizing selected materials 1. Examples include fibers dyeable with normal pressure cationic dyes obtained in .

Furthermore, the reason why the inelastic fiber yarn is wound in one direction is to make the elongation appropriate.

By the way, one of the objects of the present invention is to provide a covering yarn that has appropriate elongation, feels good on the skin, and has high frictional resistance, and for this purpose, further ingenuity is required.

In the present invention, the number of coils to be wound (T/M) is kept within a certain range, that is, from 50 T/M to 500 T/M. Here, the number of coils to be wound (T/M) is the number of turns per meter of the inelastic fiber yarn when a tension of 0.14/denier is applied to the covering yarn, based on the fineness (denier) of the synthetic rubber-like elastic yarn. It refers to the number of coils attached, and the number of coils wound (T/M) is 50.
'If the T/M is less than 500
If T/M is exceeded, the slip-off prevention effect is lost, and the appropriate elongation, slip-off prevention effect, and good touch as defined in the present invention cannot be obtained. In the present invention, it is preferable to keep the elongation within the range of 10% to 80% by adjusting the relationship between the fineness of the synthetic rubber-like elastic yarn and the number of wound coils. Here, elongation is the length when the covering thread is stretched naturally to the extent that it does not wrinkle! 1. Elongation (%) when the point at which the inelastic fiber yarn itself begins to elongate when a load is applied, that is, the length to the elongation conversion point, is 12 - Next, the method of the present invention is calculated based on the diagram. I will explain. The figure is a front view of the covering yarn manufacturing device.
At one point, a synthetic rubber-like elastic yarn is unwound from the package 2 by the guide rollers 3.4, passed through the guides 5 and fed to the feed rollers 6. A synthetic rubber-elastic yarn 1, which has been subjected to a substantial non-draft, preferably a draft of 1.10 to 1.30 times, between the feed roller 6 and the delivery roller 7 is placed around the hollow spindle 8. The inelastic fiber thread 1o unwound from the package 9 is wound in one direction. The covering yarn Y thus obtained passes through a guide 11 and is wound into a package 1 by a winding roller 13.
It is wound up in 2. Winding feed rate is +50 to +90%
is preferred. This is to prevent the stretchability from being impaired.

According to the present invention, one in five has a suitable degree of elongation.

A covering yarn with good texture and high friction and low heat generation has been produced, and when used in the perforations of socks, this covering yarn has remarkable effects such as preventing slippage of socks.

Example Using the apparatus shown in the figure, a polyester polyurethane elastic yarn (300 denier/20 filaments) was used as the synthetic rubber-like elastic yarn 1, and a nylon filament yarn (15 denier 15 filaments) was used as the inelastic fiber yarn 9. Covering yarn was manufactured under the following conditions.

Conditions: Draft...1.25 times, rotation speed of hollow spindle 8...8000R/min, number of twists...200T/M, winding foot rate...+65.0%, winding density (apparent For = 0.
25? /crA The obtained covering yarn has a winding coil number (T/M) of 2.
50T/M, elongation was 50%, and frictional resistance was large. The tension when measuring the number of wound coils (T/M) was 0.1 F/denier x 300 denier.

This covering thread and synthetic rubber thread (90 count) were attached to the inner periphery of the perforation of separate socks (with a width of 3 cm).
) and compared the effect of preventing slipping off, it was found that the covering yarn of the present invention had a much greater effect on preventing slipping off. Furthermore, since the fabric of the present invention had appropriate elongation to the touch, it had a much better fit.

[Brief explanation of the drawing]

The figure is a front view of an apparatus for implementing the invention. 2...Package, 6...Feed roller, 7...
・Delivery roller, 8...Hollow spindle, Y...
covering thread. Patent applicant: Toyobo Co., Ltd.

Claims (1)

[Claims] 1. An inelastic fiber yarn is wound in one direction around a synthetic rubber-like elastic yarn with a fineness of 140 to 1200 deniers at a number of winding coils (T/M) that satisfies the following conditions: A covering yarn characterized by being coated. 2. The covering yarn according to claim 1, wherein the inelastic fiber yarn is a thermoplastic fiber yarn having a fineness of 5 to 50 deniers. 3. The covering yarn according to claim 2, wherein the thermoplastic fiber yarn is a pressure-dyeable polyester yarn fiber. 4. The covering yarn according to claim 2, wherein the thermoplastic fiber yarn is a polyamide fiber. 5. The covering yarn according to claim 1, 2, 3, or 4, wherein the synthetic rubber-like elastic yarn is a polyester-based polyurethane elastic yarn. 6. A covering yarn characterized in that an inelastic fiber yarn is wound around a synthetic rubber-like elastic yarn having a denier of 140 to 1200 deniers at 9 degrees while applying a necrotic non-draft. Manufacturing method. 7. The method for producing a covering yarn according to claim 6, wherein the inelastic fiber yarn is a thermoplastic fiber yarn having a fineness of 5 to 50 deniers. 8. The method for producing a covering yarn according to claim 7, wherein the thermoplastic fiber yarn is a pressure-dyable polyester fiber.