Elastic knitting fabric having multilayer structure and method for producing the fabric

A multi-layer structure, knitted fabric technology, applied in the direction of knitting, weft knitting, warp knitting, etc., can solve the problems of unsatisfactory balance, uncontrolled curl, troublesome and so on

Inactive Publication Date: 2009-12-16
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, flat bed knitting machines have a wider row spacing and therefore require several yarn strands with larger dimensions, such as thick woolen yarn or long processed yarns of highly crimped thick synthetic fibers, to be arranged for weaving such that The formed knitted fabric is a sweater etc. with thick stitches, and the dense and light knitted fabric as desired by the present invention cannot be obtained.
In addition, due to the wide line spacing, even if the thickness of the combined yarn is increased, the stable shape cannot be maintained, and the warp and weft stretch balance of this knitwear is not satisfactory.
In addition, the prior art adopts the technical idea of ​​three-dimensionally knitting knitted fabric along the contour of the human body, but does not have the concept of making the knitted fabric itself have a three-dimensional structure including air gaps
Moreover, the platform knitting machine has a fatal problem: the yarn inlet and the carriage reciprocate together, the yarn is fed from the yarn inlet, and the knitting motion is repeated continuously, but when weaving elastic yarn, if bare silk is used, the pull Stretch ratio varies across width, making uniform stitches impossible
Therefore, in a knitted fabric having such a structure, curling cannot be suppressed, and it is troublesome to make the knitted fabric into clothing
[0008] In addition, traditionally, when circular knitting machines are used to weave bare polyurethane-based elastic fibers, all polyurethane-based elastic fibers on the knitting machine can only be fed to the knitting machine at the same speed due to the limitations of related machines. Weaving polyurethane-based elastic fibers in different weaves can only be done at feed speeds that are relatively close to each other
As a result, when the fibers are woven, polyurethane-based elastic fibers suffer from yarn breakage due to excessive drawing from the fiber roll due to insufficient drawing and wrong drawing
Therefore, the weaving method is obviously limited, and the weaving conditions are also limited, causing the knitted fabric to become too tight and not achieve sufficient stretchability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Elastic knitting fabric having multilayer structure and method for producing the fabric
  • Elastic knitting fabric having multilayer structure and method for producing the fabric
  • Elastic knitting fabric having multilayer structure and method for producing the fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0127] A kind of polyester fiber false twist processing yarn (Technofine Manufactured by Asahi Kasei Co., Ltd.) is used as the yarn of the front and back bottom knitting fabrics of three-dimensional knitted fabrics to make the knitted fabrics form jersey stitches. A bare filament of 155 dtex polyurethane-based elastic fibers (by Roica Manufactured by Asahi Kasei Co., Ltd.) is used as the yarn that connects the front and back bottom knitted fabrics.

[0128] Link knitting was performed with all the needle operations of a 60-hole double-sided double-needle circular knitting machine (V-LEV6 type, manufactured by Fukuhar Works Co., Ltd.) with a row pitch of 28 and a diameter of 30 inches to obtain a unit Circular knitted fabric with the distance between patterns set to 4 mm. At this time, the loop length of the bare polyurethane-based elastic fiber was 800 cm, and the loop length of the knitted fabric constituting the front and back bottom knitted fabric was 827 cm. As a result...

Embodiment 2

[0132] The inner and outer bottom knitted fabrics of the three-dimensional knitted fabric are knitted in the same manner as in Example 1. A kind of bare silk (Roica Manufactured by Asahi Kasei Co., Ltd.) is used as the yarn that connects the front and back bottom knitted fabrics. At this point, link knitting is done by all knitting needles. The obtained knitted fabric is processed in the same operation flow as in Example 1. In this case, the technical parameters and weaving characteristics of weaving are shown in Table 1 and Table 2.

[0133] The obtained three-dimensional knitted fabric had a thickness of 3.12 mm, a compressibility of 55%, a recovery rate of 99.4%, an air permeability of 0.41, and a good touch. This three-dimensional knitted fabric is ideal for interior linings such as shoes, as well as materials such as bed linens.

Embodiment 3

[0135] Knitting was performed in the same manner as in Example 2, except that connection was performed using 1 / 2 of the knitting needles as connection knitting. In this case, the technical parameters and weaving characteristics of weaving are shown in Table 1 and Table 2.

[0136] The obtained three-dimensional knitted fabric had a thickness of 3.00 mm, a compressibility of 60%, a recovery rate of 97.4%, an air permeability of 0.55, and a good touch. This three-dimensional knitted fabric is ideal for interior linings such as shoes, as well as materials such as bed linens.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

An elastic knitted fabric having a multilayer structure, made by binding separate front and back two-layer ground knitted fabrics together, wherein the above described two-layer ground knitted fabrics are bound together with only a bare string(s) of polyurethane based elastic fibers of 17 to 3000 decitexes. <IMAGE>

Description

technical field [0001] The invention relates to a circular elastic knitted fabric with multi-layer structure composed of inner and outer bottom knitted fabrics and combined yarns, a warp-knitted elastic knitted fabric, a method for knitting the above knitted fabric, and a knitting method for the knitted fabric. Invention of equipment for circular elastic knitted fabrics. More specifically, the present invention relates to an elastic knitted fabric having a three-layer structure composed of connected front and back bottom knitted fabrics, and an elastic knitted fabric with a three-dimensional structure having an air gap between the front and back bottom knitted fabrics . That is, the present invention relates to a fabric having excellent stretchability, being dense, light and ultra-stable in shape, hardly being crushed even under repeated loads in the case of a three-dimensional elastic knitted fabric, having excellent compressibility and compressibility An elastic knitted fa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04B1/00D04B1/18D04B15/48D04B15/50D04B21/18
CPCD04B1/18D04B15/50D10B2403/021D04B21/18D04B15/48D10B2403/0114D04B1/22
Inventor 近藤敏之吉田友昭古家一雄
Owner ASAHI KASEI KK
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