JP3145209B2 - Anti-snagging three-layer knitted fabric - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a three-layer knitted fabric in which the front and back ground structures are tacked with a binding yarn.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a three-layer knitted fabric in which a ground structure 11 formed by a cylinder-side loop and a ground structure 12 formed by a dial-side loop are tacked with a binding thread 13 is used. It is known and widely used for various purposes.

In such a conventional three-layer knitted fabric, both the ground structures 1 and 2 and the binding yarn 3 are all made of ordinary natural fibers or synthetic fibers, that is, inelastic yarns.

[0004]

In such a conventional three-layered knitted fabric, there is a problem that the binding yarn 13 jumps out on the surfaces of the two ground structures 11 and 12 and snagging easily occurs. This tendency is remarkable when long fibers having a large number of single fibers are used.

An object of the present invention is to solve such a problem of the conventional three-layer structure knitted fabric and to provide a three-layer structure knitted fabric excellent in anti-snagging property.

[0006]

Means for Solving the Problems The present inventors have made various studies to achieve the above object, and as a result, have found that it is only necessary to mix elastic yarns with the ground structure, and have completed the present invention. .

That is, the present invention provides a three-layer structure knitted fabric obtained by tacking a ground structure formed by a cylinder-side loop and a ground structure formed by a dial-side loop with a binding yarn, wherein the two ground structures are Inelastic yarn and elongation at break of 250% or more
Knitting while aligning with the inelastic yarn in a stretched state
And an anti-snaggi of the knitted fabric.
The anti-snagging three-layer structure knitted fabric is characterized in that the elasticity is 4 or higher, and the content of the elastic yarn is preferably 10% by weight or more.

FIG. 1 is a side view showing an example of a three-layer structure knitted fabric of the present invention, wherein a ground structure 1 formed by a cylinder side loop and a ground structure 2 formed by a dial side loop.
Are ground with a binding yarn 3, and the ground structures 1 and 2 are both composed of an inelastic yarn 4 and an elastic yarn 5.

As the inelastic yarn 4, any commonly used natural fiber or synthetic fiber can be used. For example, nylon and polyester filament yarns and wooly yarns are often used.

The elastic yarn 5 used in the present invention has a breaking elongation of 250% or more, and examples thereof include a polyurethane elastic yarn and a polyetherester elastic yarn. If the elongation at break is less than 250%, sufficient elasticity cannot be expected, and it is difficult to achieve the object of the present invention.

The content of the elastic yarn 5 in the two ground structures 1 and 2 is preferably not less than 10% by weight. Elastic thread 5
Is too small, the effect of preventing snagging becomes small.

[0012] The binding yarn 3 may be any commonly used fiber, and is not particularly limited.

In order to manufacture the three-layer knitted fabric of the present invention, the elastic yarn 5 is stretched and aligned with the inelastic yarn 4 and supplied from the cylinder side and the dial side of the circular knitting machine. Knitting while tacking.

[0014]

When the stress is removed after knitting the three-layer structure knitted fabric of the present invention, the elastic yarn 5 shrinks as shown in FIG. Jumping out of the weft 3 from the two ground structures 1 and 2 is prevented. As a result, the occurrence of snagging is prevented, and the knitted fabric is excellent in grade 4 or higher.
It will exhibit anti-snagging properties .

In addition, the elastic yarn 5 mixed in the two ground structures 1 and 2 shrinks, thereby increasing the feeling of the ground thickness of the knitted fabric and improving the heat retention.

Further, since the elastic yarn 5 is used, the knitted fabric is given a stretch property.

[0017]

The present invention will be described in more detail with reference to the following examples.

Using a circular knitting machine, a three-layer knitted fabric was knitted with the following inelastic yarn, elastic yarn and binding yarn.

Inelastic yarn: Polyethylene terephthalate wooly processed yarn (80 denier / 72 filament)

Elastic yarn: polyetherester elastic yarn (40 denier / 1 filament) produced by the following method: 167.3 parts by weight of dimethyl terephthalate, 105 parts by weight of tetramethylene glycol, number average molecular weight: 2,000
In a reactor, 275 parts by weight of polytetramethylene glycol and 0.2 parts by weight of tetrabutyl titanate were subjected to a transesterification reaction at an internal temperature of 190 ° C. to obtain 70% of the theoretical amount.
When the methanol of the above distills out, the internal temperature is raised to 220 ° C., and the reaction is carried out under a weak vacuum for 60 minutes and then under a high vacuum for 200 minutes. Here, Irganox 1010 is used as a stabilizer.
3.5 parts by weight (manufactured by Ciba-Geigy), Tinuvin 327
0.21 part by weight (manufactured by Ciba Geigy) is added, and the reaction is terminated after stirring for 20 minutes. The resulting block copolymerized polyetherester is pelletized, and the pellet is dried and melt-spun at 265 ° C. to obtain a block copolymerized polyetherester elastic yarn.

Binding yarn: polyethylene terephthalate wooly-processed yarn (80 denier / 72 filaments) First, the elastic yarn is stretched 2.0 times and aligned with the non-elastic yarn. Each of the yarns was supplied and knitted while tacking the front and back ground structures with a binding yarn to obtain a three-layer knitted fabric having a structure diagram shown in FIG.

This knitted fabric has no binding yarn protruding from the ground structure, has a good anti-snagging property of 4 to 5 class measured according to JIS L1058-83, is rich in ground thickness, and has a warmth. It had excellent stretchability and further had stretchability.

On the other hand, for comparison, a three-layer knitted fabric was knitted in the same manner as in the above Example, except that the polyetherester elastic yarn was not used.

In the obtained knitted fabric, the binding yarn jumped out of the ground structure, the anti-snagging property was poor as grades 2 and 3, and the feeling of ground thickness and heat retention were poor, and the stretchability was small.

[0025]

According to the present invention, there is provided a three-layer knitted fabric having excellent anti-snagging properties, rich in ground thickness, excellent heat insulation properties, and stretch properties.

The three-layer knitted fabric of the present invention is used for various uses such as outer garments, and is particularly suitably used for sports uniforms and the like.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of an anti-snugging three-layer structure knitted fabric of the present invention.

FIG. 2 is a side view for explaining the operation of the knitted fabric shown in FIG.

FIG. 3 is an example of an organization chart of the anti-snagging three-layer structure knitted fabric of the present invention.

FIG. 4 is a side view showing an example of a conventional three-layer structure knitted fabric.

[Explanation of symbols]

 Reference Signs List 1 ground texture formed by cylinder side loop 2 ground texture formed by dial side loop 3 binding yarn 4 inelastic yarn 5 elastic yarn

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-51-17373 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D04B 1/00 D04B 1/18

Claims (2)

(57) [Claims] 1. A three-layer structure knitted fabric obtained by tacking a ground structure formed by a cylinder-side loop and a ground structure formed by a dial-side loop with a binding yarn, wherein the two ground structures are inelastic yarns. Having a breaking elongation of 250% or more;
Elastic yarn knitted while being aligned with the inelastic yarn in the extended state
And the anti-snagging property of the knitted fabric is class 4.
An anti-snugging three-layer structure knitted fabric characterized by the above . 2. The anti-snagging three-layer structure knitted fabric according to claim 1, wherein the content of the elastic yarn in the two-layer structure is 10% by weight or more.