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A method for fixing leather-wrapped borders

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, and achieve Fast curing speed, improved tension and adhesion, and improved coating effect

Active Publication Date: 2018-06-01
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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  • A method for fixing leather-wrapped borders

Examples

Experimental program
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Effect test

Embodiment 1

[0041] A method for fixing a leather-wrapped border, comprising the following steps:

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

[0043] (2) Fixing with nails: After covering the workpiece with leather, stretch the leather-covered 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 hot-melted or ultrasonically welded at the corners of the leather-covered border that are relatively easy to wrinkle, and the edges are fixed and trimmed.

[0045] The invention pre-cuts and opens the corners of the leather that are relatively easy to wrinkle, and uses hot-melt or ultrasonic welding technology to weld and fix the leather and the workpiece at the corners of the leather-covered boundary that are relatively easy to wrinkle, so as to solve the problem of lea...

Embodiment 2

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

[0066] In the present embodiment, described hot melt adhesive comprises the component of following parts by weight:

[0067] Polyesteramide 69.5 parts

[0068] Isotactic polypropylene 10 parts

[0069] 8 parts epoxy resin

[0070] Silicone 2 parts

[0071] 8 parts terpene resin

[0072] Acetyl tributyl citrate 2 parts

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

[0074] The preparation step of the polyester amide comprises: carrying out the esterification reaction of terephthalic acid, propylene glycol and triethylene glycol, and then adding isophthalic acid with a carbon number of C 12 The aliphatic dibasic acid, heptanediamine and caprolactam are subjected to 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 the present embodiment, described hot melt adhesive comprises the component of following parts by weight:

[0079] Polyesteramide 75 parts

[0080] Isotactic polypropylene 5 parts

[0081] 5 parts epoxy resin

[0082] Silicone 2 parts

[0083] 7 parts terpene resin

[0084] Acetyl tributyl citrate 5 parts

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

[0086] The preparation step of the polyester amide comprises: carrying out the esterification reaction of terephthalic acid, hexanediol and triethylene glycol, and then adding isophthalic acid with a carbon number of C 8 The fatty dibasic acid, pentamethylenediamine and caprolactam are subjected to esterification and amidation reactions, and polycondensation 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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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 invention relates to the technical field of leather wrapping, in particular to a method for fixing the border of leather wrapping. Background technique [0002] In industrial production and daily life, people usually cover the surface of products with leather. Leather coverings are durable, easy to wipe, high-end and beautiful, or improve the comfort of use. Needs 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 wrinkle and arch when it encounters the corner of the product. When the opponent workpiece is assembled, it will push against the opponent workpiece, resulting in an excessive assembly gap, which will affect the coating effect and product quality. Contents of the invention [0003] The object of the present invention is to address the above-mentioned deficiencies in the prior art, and provide a method for fixing t...

Claims

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Application Information

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Patent Type & Authority Patents(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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