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Hot-melt adhesive and leather composite material and preparation process thereof

A composite material and preparation technology, applied in the field of leather materials, can solve problems such as irregular cutting, edge tearing, and affecting processing and application, and achieve the effects of easy control, improved internal viscosity, and difficult separation between layers

Inactive Publication Date: 2021-02-19
陈伟忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Currently on the market, few leather materials are used to prepare labels. Due to the fiber material inside the leather, in the process of pressing and cutting, it is easy to cause problems such as tearing and irregular cutting on the cut edges, which will affect its quality. post processing application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation process of a composite material of hot melt adhesive and leather, comprising the following steps:

[0021] A, hot pressing treatment: take a leather material, lay it on the surface of the lower mold, then lay a release paper with a hot melt adhesive film on the surface of the leather material, cover the upper mold, and carry out hot pressing treatment;

[0022] B, cold pressing treatment: after the hot pressing treatment in step A, open the upper mold, tear off the release paper, then lay the release paper with hot melt adhesive film on the surface, cover the upper mold, and carry out cold pressing treatment;

[0023] C. Fusing treatment: After the cold pressing treatment in step B, place the mold in a fusing device for fusing treatment, and finally open the upper mold and demould to obtain a composite material of hot melt adhesive and leather.

[0024] In the step A, the temperature of the upper mold for thermocompression bonding is 95°C, and the temperat...

Embodiment 2

[0034] The difference between this embodiment and above-mentioned embodiment 1 is:

[0035] In the step A, the temperature of the upper mold for thermocompression bonding is 98°C, and the temperature of the lower mold is 108°C.

[0036] In the step A, the temperature of thermocompression bonding is 103°C.

[0037] In the step A, the time for thermocompression bonding is 185s.

[0038] In the step A, the pressure of thermocompression bonding is 75kg.

[0039] In the step B, the temperature of the cold pressing treatment is normal temperature.

[0040] In the step B, the cold pressing time is 1555s.

[0041] In described step B, the pressure of cold pressing is 105kg.

[0042] In the step C, the fusing processing time is 1s.

[0043] In the step C, the pressure of the fusing treatment is 155kg.

Embodiment 3

[0045] The difference between this embodiment and above-mentioned embodiment 1 is:

[0046] In the step A, the temperature of the upper mold for thermocompression bonding is 100°C, and the temperature of the lower mold is 110°C.

[0047] In the step A, the temperature of thermocompression bonding is 105°C.

[0048] In the step A, the time for thermocompression bonding is 180s.

[0049] In the step A, the pressure of thermocompression bonding is 80kg.

[0050] In the step B, the temperature of the cold pressing treatment is normal temperature.

[0051] In the step B, the cold pressing time is 160s.

[0052] In said step B, the pressure of cold pressing is 100kg.

[0053] In the step C, the fusing processing time is 1s.

[0054] In the step C, the pressure of the fusing treatment is 150kg.

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Abstract

The invention relates to the technical field of leather materials, in particular to a hot-melt adhesive and leather composite material and a preparation process thereof. The preparation process comprises the following steps that A, a leather material is taken and laid on the surface of a lower mold, then release paper with a hot-melt adhesive film is laid on the surface of the leather material, anupper mold is closed, and thermocompression bonding treatment is conducted; B, the upper mold is opened, the release paper is torn off, release paper with a hot-melt adhesive film is laid on the surface, the upper mold is closed, and cold compression treatment is conducted; and C, the whole mold is placed in a fusing device for fusing treatment, finally, the upper mold is opened, demolding is conducted, and the hot-melt adhesive and leather composite material is obtained. The preparation process is simple in operation and easy to control; and the hot-melt adhesive laid in the step A is subjected to thermocompression bonding treatment, so that the hot-melt adhesive is heated to melt and permeate into the leather layer, the internal viscosity of the leather is improved, fibers in the leather are protected, fusing is neat, interlayer bonding is firm, and the quality is stable.

Description

technical field [0001] The invention relates to the technical field of leather materials, in particular to a composite material of hot melt adhesive and leather and a preparation process thereof. Background technique [0002] Currently on the market, few leather materials are used to prepare labels. Due to the fiber material inside the leather, in the process of pressing and cutting, it is easy to cause problems such as tearing and irregular cutting on the cut edges, which will affect its quality. post-processing applications. Contents of the invention [0003] In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provide a composite material of hot melt adhesive and leather and its preparation process. [0004] The object of the present invention is achieved through the following technical solutions: a preparation process of a composite material of hot melt adhesive and leather, comprising the following steps: ...

Claims

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Application Information

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IPC IPC(8): B29C65/02B29C65/48B29C65/52B29C65/74
CPCB29C65/004B29C65/02B29C65/4815B29C65/526B29C65/747B29C66/91421B29C66/9241B29C66/944
Inventor 陈伟忠
Owner 陈伟忠
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