Production process of warp-knitting automobile interior trim composite material for film bonding

A technology for automobile interior and composite materials, applied in the field of automobile interior parts materials, can solve the problems of excess around the profile structure, the separation of the fabric and the base material, affecting the appearance, etc., to achieve full adhesion fastness and full style. , the effect of strong layering

Active Publication Date: 2012-07-11
HONGDA HIGH TECH HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the interior parts are taken out of the mold, during the cooling process (at this time, the maximum bonding fastness has not yet been formed), because the interior parts have many uneven surface structures, if the fabric does not have sufficient elongation at this time, the fabric The internal stress of the surface structure will pull out the deep part of the surface structure, causing the fabric to be separated from the base material, resulting in unqualified; but if the elongation rate is too large, that is, the tensile force is too small, it is easy to bring the excess fabric with it during pressing. Into the mold, resulting in excess around the place where the surface structure is deep, forming wrinkles, affecting the appearance, so it cannot meet the requirements

Method used

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  • Production process of warp-knitting automobile interior trim composite material for film bonding
  • Production process of warp-knitting automobile interior trim composite material for film bonding
  • Production process of warp-knitting automobile interior trim composite material for film bonding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: GM LaCrosse crown composite material production process.

[0028] (1) Choose PET low-elastic yarn 85dtex / 36f and PET filament 44dtex / 24f with crimp shrinkage rate of 20%, crimp shrinkage coefficient of variation ≤7%, and crimp stability ≥78% as raw materials.

[0029] ⑵Adopt the high-speed warping machine to arrange the raw material yarn into a pan head, the number of yarns GB1: 275 × 4 (1100), using PET filament 44dtex / 24f; GB2: 275 × 4 (1100), Use PET filament 44dtex / 24f; GB3: 550 pieces x 4 pieces (2200 pieces), use PET low-elasticity yarn 85dtex / 36f; the line speed is controlled at 430 m / min during finishing, and the tension of each yarn is controlled at 18g / piece , Strictly control the tension deviation between silk and silk to ensure uniform warping tension.

[0030] ⑶ Install the prepared pan heads on the warp beam, each warp beam covers 4 pan heads, and then install it on the Tricot warp knitting machine for three-comb composite weaving. By adjusti...

Embodiment 2

[0036] Example 2: The invention discloses a production process of a general top decoration composite material.

[0037] (1) Choose PET low elastic yarn 85dtex / 36f and PET filament 44dtex / 24f with crimp shrinkage rate of 18%, crimp shrinkage coefficient of variation ≤7%, and crimp stability ≥78% as raw materials.

[0038] ⑵Adopt the high-speed warping machine to arrange the raw yarn into a pan head, the number of yarns GB1: 262 × 4 (1048), using PET filament 44dtex / 24f; GB2: 262 × 4 (1048), Use PET filament 44dtex / 24f; GB3: 525 pieces x 4 pieces (2100 pieces), use PET low-elasticity yarn 85dtex / 36f; the line speed is controlled at 410m / min during finishing, and the tension of each thread is controlled at 15g / piece. Strictly control the tension deviation between silk and silk to ensure uniform warping tension.

[0039] ⑶ Install the finished warp heads on the warp beam, each warp beam covers 4 pan heads, and then install it on the Tricot warp knitting machine for three-comb c...

Embodiment 3

[0045] Example 3: Another production process for general purpose crown composites.

[0046] (1) Choose PET low-elastic yarn 85dtex / 36f and PET filament 44dtex / 24f with crimp shrinkage rate of 21%, crimp shrinkage coefficient of variation ≤7%, and crimp stability ≥78% as raw materials.

[0047] ⑵Adopt the high-speed warping machine to arrange the raw material yarn into a pan head, the number of yarns GB1: 287 × 4 (1148), using PET filament 44dtex / 24f; GB2: 287 × 4 (1148), PET filament 44dtex / 24f is used; GB3: 575 pieces × 4 pieces (2300 pieces), PET filament 85dtex / 36f is used; the line speed is controlled at 450m / min during finishing, and the tension of each filament is controlled at 20g / piece, strictly Control the tension deviation between yarns to ensure uniform warping tension.

[0048] ⑶ Install the finished warp heads on the warp beam, each warp beam covers 4 pan heads, and then install it on the Tricot warp knitting machine for three-comb composite weaving, adjust the...

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Abstract

The invention relates to a production process of a warp-knitting automobile interior trim composite material for film bonding. The production process comprises the steps of raw material selection, warping, weaving, preshrinking, dyeing, shaping and compounding. The fabric tissue structure is characterized in that: GB1 is 10/12 and 23/21, GB2 is 23/21 and 10/12, and GB3 is 10/34; in the weaving step, the positions of a sinking sheet and a knitting needle are controlled to be 2.5 to 3.5mm through regulating the eccentric position of a sinking sheet shaft, so a circle pillar of a wire circle is increased during the knitting into circles, the wire circle has enough retraction space, and the elasticity is increased; and in the compounding step, fabrics are sequentially compounded with poly urethane (PU) foam and diaphragms. Products produced by the process have the proper elongtation, the requirements of interior trims in various molded surface structures produced through film bonding are met, the manufactured interior trims have flat surface, fullness and high bonding firmness, and the production process conforms to the requirements of individuation, diversification, environment protection and energy saving of the automobile interior trims.

Description

technical field [0001] The invention relates to a production process for warp-knitted automobile interior trim composite materials suitable for film bonding, in particular to interior parts that can be used for film bonding to produce various surface structures, with delicate pattern structures and full-bodied styles. The invention relates to a production process of a warp-knitted composite material, which belongs to the field of automotive interior trim materials. Background technique [0002] Car interior parts are generally installed inside the car to play the role of heat insulation, sound insulation and beauty. In the era of more and more pursuit of high performance, environmental protection, energy saving and personalization, the interior parts of cars are the same as the appearance of cars , become an important factor for people to buy cars, and novel interior parts can give people a refreshing feeling and improve the grade of the car. Complicated interior structures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/06B32B37/10D04B21/00D06B1/02D06C7/02
Inventor 张建福沈国甫马月娟刘红旗许彩仙
Owner HONGDA HIGH TECH HLDG CO LTD
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