Fixed method of leather coating border

A fixing method and leather technology, applied in the surface pretreatment bonding method, adhesive heating bonding method, epoxy resin glue, etc., can solve the problems of easy arching and wrinkling of leather, etc., to achieve Fast curing speed, improved tension and adhesion, and high viscosity strength

Active Publication Date: 2016-05-18
DONGGUAN HIROSAWA AUTOMOTIVE TRIM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, and provide a method for fixing the leather-wrapped boundary, so as to solve the problem that the leather is easy to wrinkle and bulge, and improve the wrapping effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for fixing leather-coated borders includes the following steps:

[0042] (1) Pre-cutting treatment: before the leather covers the workpiece, pre-cut and open the corners of the leather that are relatively easy to wrinkle;

[0043] (2) Nail fixation: After the leather wraps the workpiece, stretch the leather wrap boundary to the back of the workpiece, and fix the non-corner parts that are not easy to wrinkle;

[0044] (3) Welding and fixing: The leather and the workpiece are welded by heat or ultrasonic at the corners where the leather covering boundary is relatively easy to wrinkle, and then fixed and trimmed.

[0045] In the present invention, the corner parts of the leather that are relatively easy to wrinkle are cut and opened in advance, and hot melt or ultrasonic welding technology is used to weld and fix the leather and the workpiece at the corner parts of the leather covering boundary that are relatively easy to wrinkle, so as to solve the problem of leather Eas...

Embodiment 2

[0065] The difference between this embodiment and Embodiment 1 is:

[0066] In this embodiment, the hot melt adhesive includes the following components by weight:

[0067] 69.5 parts of polyester amide

[0068] 10 parts of isotactic polypropylene

[0069] Epoxy resin 8 parts

[0070] 2 parts of silicone

[0071] 8 parts of terpene resin

[0072] 2 parts of acetyl tributyl citrate

[0073] 0.5 part of 2,6-di-tert-butyl-4-methylphenol.

[0074] The preparation steps of the polyester amide include: esterifying terephthalic acid, propylene glycol and triethylene glycol first, and then adding isophthalic acid, the number of carbon atoms is C 12 Fatty dibasic acid, heptanediamine and caprolactam are used for esterification and amidation reactions, and polycondensation to obtain polyester amide.

[0075] The rest of the content of this embodiment is the same as that of Embodiment 1, and will not be repeated here.

Embodiment 3

[0077] The difference between this embodiment and Embodiment 1 is:

[0078] In this embodiment, the hot melt adhesive includes the following components by weight:

[0079] 75 parts of polyester amide

[0080] 5 parts of isotactic polypropylene

[0081] Epoxy resin 5 parts

[0082] 2 parts of silicone

[0083] 7 parts of terpene resin

[0084] 5 parts of acetyl tributyl citrate

[0085] 1 part of 2,6-di-tert-butyl-4-methylphenol.

[0086] The preparation steps of the polyester amide include: subjecting terephthalic acid, hexanediol and triethylene glycol to esterification reaction first, and then adding isophthalic acid, the number of carbon atoms is C 8 Fatty dibasic acid, pentane diamine and caprolactam, undergo esterification and amidation reactions, and polycondensate to obtain polyester amide.

[0087] The rest of the content of this embodiment is the same as that of Embodiment 1, and will not be repeated here.

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PUM

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Abstract

The invention relates to the technical field of leather coating and particularly relates to a fixed method of a leather coating border. The fixed method comprises the following steps: (1) precutting: carrying out opening cutting treatment on corner parts which easily wrinkle on leather in advance before a workpiece is coated with the leather; (2) nailing fixation: after the workpiece is coated with the leather, drawing the leather coating border to the back surface of the workpiece, and carrying out nailing fixation on non-corner parts which do not easily wrinkle; and (3) melting fixation: carrying out hot melting or ultrasonic melting on the leather and the workpiece at the corner parts which easily wrinkle on the leather coating border, carrying out fixation and trimming. By virtue of the fixed method, the problems that the leather coated workpiece easily wrinkles and arches can be solved, the coating effect is improved, the excessive assembling clearance between the leather and the workpiece is prevented, and the product yield is increased.

Description

Technical field [0001] The present invention relates to the technical field of leather covering, in particular to a method for fixing leather covering boundaries. Background technique [0002] In industrial production and daily life, people usually cover the surface of the product with leather. The leather cover has the characteristics of durability, easy to wipe, high-end beauty or improved comfort in use. After the product is covered with leather, the remaining amount of the boundary is often Need to be fixed. In the prior art, the leather border is mostly fixed by nailing the back of the product. When the leather is pulled to the back of the product, the leather will fold and arch where it meets the corner of the product. When the opponent's workpiece is assembled, it will hit the opponent's workpiece and cause the assembly gap to be too large, which affects the coating effect and product quality. Summary of the invention [0003] The purpose of the present invention is to so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J5/06C09J5/02C09J177/12C09J123/12C09J163/00C09J145/00C09J11/06
CPCC08L2201/08C08L2205/035C09J5/02C09J5/06C09J11/06C09J177/12C09J2301/304C09J2301/50C08L23/12C08L63/00C08L45/00C08K5/11C08K5/13
Inventor 李叔明涂明煌
Owner DONGGUAN HIROSAWA AUTOMOTIVE TRIM
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