JPS6111264Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pile knitted fabric having high elongation. Conventionally, pile knitted fabrics having high elongation have been widely used not only for clothing applications but also for non-clothing applications. However, with conventional pile knitted fabrics,
When the knitted fabric is stretched, the pile loops deform, causing a phenomenon in which the ground structure is visible between the pile loops (ground cracking). This ground cracking is also a problem in pile knitted fabrics for clothing, but especially when the pile knitted fabric is used as fabric for forming vehicle interior materials, etc., the above-mentioned ground cracking may occur depending on the three-dimensional curved surface. This is a fatal defect that remains semi-permanently, and because of this defect, it is currently not widely used for vehicle interior materials.

The purpose of the present invention is to improve such drawbacks and to propose a high elongation pile knitted fabric with no ground splits in which the wale rows of the pile knitted fabric are conspicuous.

That is, the present invention provides a pile knitted fabric that is knitted with a ground weave yarn and a pile loop yarn and has a weft direction elongation of 50% or more, in which highly oriented undrawn yarn is used as the ground weft yarn. The pile loops are formed over two or more consecutive back stitches, and the pile loops are alternately formed at positions shifted by one to several wales, or at completely random positions. This provides a high elongation pile knitted fabric characterized in that all the boundaries between the purl stitches are covered by the pile loops.

The present invention will be explained in detail below.

The knitted fabric of the present invention is knitted with ground weave yarn and pile loop yarn, and has an elongation of 50 in the weft direction.
% or more. Knitted fabrics are naturally rich in stretchability and usually have high elongation, but in the present invention, it is particularly important to use highly oriented undrawn yarn as the ground weave yarn. In particular, those using highly oriented undrawn polyester yarns having excellent physical properties are preferably exemplified. Further, the highly oriented undrawn yarn can be used by itself, but it may also be used in combination with a high elongation yarn such as a crimped yarn or an elastic yarn such as spandex.

Next, the pile loop formed in the knitted fabric of the present invention needs to be formed so as to span two or more consecutive back stitches.

That is, FIG. 1 is a diagram schematically explaining the stitch formation of the knitted fabric of the present invention. FIG. 1A shows the knitted fabric in an unstretched state, and FIG. 1B shows the knitted fabric after stretching.

That is, as is clear from FIG. 1, the pile loop b is formed so as to extend over two or more consecutive back stitches a (two back stitches in the example shown in FIG. 1). c.
indicates a loop in the table. Such a pile loop may be made using a sinker knitting machine, or may be made by the knitting method shown in FIG. 2. Fig. 2 is a knitting method diagram showing a method of knitting a double-sided knitted fabric for making the knitted fabric of the present invention, and Fig. 2 A to F show the knitting method according to the yarn feeding order. .

In addition, in FIG. 2, 1 is a ground weaving yarn, 2 is a pile loop yarn, and 4 is a soluble yarn, and after knitting, the soluble yarn 4 is dissolved to make the stitches entwined with the soluble yarn 4. A method of forming pile loops, etc.

Further, in the knitted fabric of the present invention, as shown in FIG. 1, the boundary of the back stitch a (indicated by arrow A) must be covered by the pile loop b. In order to cover all the boundaries between back stitches with pile loop b,
When forming the pile loops, it is possible to form the pile loops by alternately shifting one wale to several wales or by forming the pile loops completely randomly.

The weave of the ground weave part is not particularly limited, but a knitted fabric with high elongation can be obtained by using a Tenkasa weave, or a weave that is a combination of knit knitting and miss knitting.

Since the knitted fabric of the present invention has the above-mentioned structure, there is no defect due to ground splitting even when the knitted fabric is stretched, and even when the fabric is stretched, it has a good knitted fabric surface uniformly covered with pile loops. You can get it.

That is, FIG. 3 is a diagram schematically explaining the stitch formation of a conventional pile knitted fabric. As shown in Fig. 3, in the conventional pile knitted fabric, pile loops b are formed in the rows of the back stitches a, so there are no pile loops at the back stitch boundary shown by arrow A, as shown in Fig. 3 b. As shown in Fig. 1B, when the knitted fabric is stretched, the back stitch boundary A creates a ground crack defect, but in the knitted fabric of the present invention, the back stitch boundary A is covered with pile loops, so that the stretch of the knitted fabric is prevented, as shown in Figure 1 B. Sometimes, the defects of ground cracks do not occur. In particular, this ground cracking is a serious problem when the knitted fabric is stretched by 50% or more, but this problem has been completely solved by the present invention.

In particular, when the elongation rate of the knitted fabric partially changes, such as when highly oriented undrawn yarn is used as the ground weaving yarn and the thermoplasticity of the highly oriented undrawn yarn is used for forming sheets, etc. However, there are no ground cracks at all.

Examples will be explained below.

Example Using a 28-gauge sinker pile knitting machine, a pile knitted fabric was knitted according to the knitting method shown in FIG. 4, Ro to Ho. Fig. 4 Ro to Ho are knitting method diagrams showing a knitting method for a pile knitted fabric which is an embodiment of the present invention (Ro to Ho show the yarn feeding order), and Fig. 4 A is a knitting method diagram showing the method of knitting a pile knitted fabric which is an embodiment of the present invention. FIG. 2 is a perspective view schematically showing a pile knitted fabric.
Note that a and a' indicate the back stitch courses knitted with the ground weave yarns 1 and 1', and b indicate the pile loops knitted with the pile loop yarn 2.

Reference numeral 1 shown in FIG. 4 is a yarn for the ground structure, which is a highly oriented undrawn polyester yarn (45de/12fil) with a birefringence index Δn of 0.05, and 1' is a yarn for the ground structure, which has birefringence. Highly oriented undrawn polyester yarn (115 de/36 fil) with a ratio Δn of 0.05, 2 is a pile loop yarn and is a polyester false twisted yarn (150 de/48 fil). In the obtained knitted fabric, as shown in Figure 4 A, the pile loops B are arranged in a zigzag pattern, and the boundary A of the back stitch is covered by one of the pile loops, so that the knitted fabric does not cause cracking even when stretched. is obtained.

[Brief explanation of the drawing]

Fig. 1 is a diagram schematically explaining the stitch formation of the knitted fabric of the present invention, Fig. 2 is a knitting method diagram showing the knitting method of the double-sided knitted fabric for making the knitted fabric of the present invention, and Fig. 3 is A diagram schematically explaining the stitch formation of a conventional pile knitted fabric,
Fig. 4 Ro to Ho are knitting method diagrams showing a method of knitting a pile knitted fabric which is an embodiment of the present invention, and Fig. 4 A is a model diagram of a pile knitted fabric according to the knitting method of Fig. 4 Ro to Ho. FIG. 1, 1'... Yarn for ground weave, 2... Thread for pile loop, a... Back stitch, b... Pile loop, A...
The boundary between backfire and backfire.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a pile knitted fabric that is knitted with a ground weave yarn and a pile loop yarn and has a weft direction elongation of 50% or more, the ground weave yarn contains highly oriented undrawn yarn. The pile loops are formed over two or more consecutive back stitches, and the pile loops are alternately formed at positions shifted by one to several wales, or at completely random positions. A high elongation pile knitted fabric characterized in that the boundaries between all purl stitches are covered by the pile loops by forming the pile loops. 2. The knitted fabric according to claim 1, wherein the ground texture yarn is a highly oriented undrawn polyester yarn.