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Stereoscopic knitwork

A knitted fabric and three-dimensional technology, applied in the field of three-dimensional knitted fabrics, can solve the problems of insufficient vibration absorption and insufficient shaking stability in the left and right directions, and achieve excellent vibration absorption, good stability, and the effect of preventing concentrated loads

Inactive Publication Date: 2009-03-11
ASAHI KASEI FIBERS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the three-dimensional knitted fabric disclosed in Patent Document 2 does not fully consider the spring constant under the load equivalent to seating and the shear stress of the front and back knitted layers, so the vibration absorption and the sense of stability against the shaking in the left and right directions are not sufficient.

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Using a double-needle bed Raschel knitting machine equipped with 6 guide bars (guide bar) with a gauge of 14 and a needle bed interval of 14.2mm, the 500 False-twisted processed yarn of polyethylene terephthalate fiber with dtex 144 monofilaments, 2 pulls, 1 wear (in) 1 empty (out) (L1) and 1 empty 1 wear (L2) Arrangement and supply of 440 decitex poly(1,3-trimethylene terephthalate fiber monofilaments (manufactured by Sorotex Co., Ltd.)) from the two combs (L3, L4) forming the connection part. Air (L3) and 1 empty 1 wear (L4) are supplied in an arrangement, and then 500 decitex 144 monofilaments are supplied in an all in arrangement from 1 bar (L5) forming the inner knitted layer Polyethylene terephthalate fiber false-twisted processed yarn is supplied with 440 decitex polyethylene terephthalate monofilament (Solotex( Co., Ltd.).

[0074] A gray fabric of a three-dimensional knitted fabric was knitted at a weft density of 12.8 courses / 2.54 cm using the (knitting stru...

Embodiment 2

[0083] A gray fabric of a three-dimensional knitted fabric was knitted in the same manner as in Example 1, except that 440 dtex polybutylene terephthalate fiber monofilaments were supplied from the two bars (L3, L4) forming the connecting portion. For the obtained gray cloth 4%, carry out dry heat setting under the condition of 170°C×2 minutes and 30 seconds with an overfeed rate of 1%, with 15.5 courses / 2.54cm, 14.2 wales / 2.54cm, and a thickness of 10.5mm , forming a part of one continuous connecting yarn into a triangular shape with the surface side knitted layer as the base, and obtaining a number ratio of 1:1 of connecting yarns forming a triangular shape and an oblique shape, the surface side knitted layer A three-dimensional knitted fabric in which reinforcing yarns are inserted into the mesh openings. The physical properties of the obtained three-dimensional knitted fabric are shown in Table 1.

Embodiment 3

[0085] Except that 440 dtex polyethylene terephthalate fiber monofilaments are supplied from the two bars (L3, L4) forming the connecting portion, and the weft density is 12.0 courses / 2.54cm, the same as in Example 1 The gray cloth of three-dimensional knitted fabric. 6% of the obtained gray cloth was dry heat-set with an overfeed rate of 1% at 155°C for 2 minutes and 30 seconds, with 14.5 courses / 2.54cm, 14.0 wales / 2.54cm, and a thickness of 10.4mm. , forming a part of one continuous connecting yarn into a triangular shape with the surface side knitted layer as the base, and obtaining a number ratio of 1:1 of connecting yarns forming a triangular shape and an oblique shape, the surface side knitted layer A three-dimensional knitted fabric in which reinforcing yarns are inserted into the mesh openings. The physical properties of the obtained three-dimensional knitted fabric are shown in Table 1.

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

A stereoscopic knitwork including two layers of knitting fabric respectively disposed on the front and back sides and a monofilament connecting yarn for connecting of the two layers of knitting fabric, characterized in that the compressive load at 2.6 mm compressive deformation of a compressed sheet of 5 to 25 mm thickness and 100 mm diameter from the stereoscopic knitwork is in the range of 100 to 250 N, and that the shearing stress at 5 mm lateral transition (transition along the course line) of the knitting fabric disposed on the front and back sides in parallel relationship is in the range of 15 to 35 N.

Description

technical field [0001] The present invention relates to a three-dimensional knitted fabric that can be placed on a polyurethane cushioning material of a seat pad for a vehicle, prevents concentrated loads from being bottomed out when seated, and can obtain excellent vibration absorption and stability against shaking in the left and right directions . Background technique [0002] In recent years, the three-dimensional knitted fabric composed of two layers of knitted layers inside and outside and the connecting yarn (yarn) connecting the two layers of knitted layers, compared with the polyurethane cushioning material covered with foamed polyurethane with skin material, has the advantages of circulation. Cushioning materials with functions such as utilization, air permeability, and vibration absorption are gradually being used in seat cushion materials and the like. [0003] Patent Document 1 discloses a knitted fabric having a spring constant (spring constant) of 100 N / below...

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 Applications(China)
IPC IPC(8): D04B21/14A47C27/00
CPCD04B21/16D10B2505/08D10B2403/021B60N2/70B60N2/58A47C27/00D04B21/14
Inventor 池永秀雄谷口幸仁
Owner ASAHI KASEI FIBERS CORPORATION
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