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A kind of production process of using two-layer cowhide embryo to prepare leather

A two-layer cowhide and production process technology, which is applied in small raw hide/big raw hide/leather/fur treatment, leather manufacturing, small raw hide/big raw hide/leather/fur mechanical treatment, etc., can solve the problem of low economic benefit of leather materials, The two-layer cowhide has problems such as insufficient fineness and limited application range to achieve the effect of facilitating large-scale industrial production, good high and low temperature resistance, and low process and equipment requirements.

Active Publication Date: 2019-11-01
DONGGUAN TIANYI LEATHER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the insufficient fineness and poor gloss of the existing two-layer cowhide, it can only be used to make the inner lining of the leather material, and cannot be used as the surface layer material of the product. The application range is limited, and the economic benefit of the obtained leather material is not high.

Method used

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  • A kind of production process of using two-layer cowhide embryo to prepare leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of production technology that utilizes two-layer cowhide embryo to prepare leather, comprises the following steps:

[0041] (1) Material selection: Two-layer cowhide embryos are used;

[0042] (2) Pieces: Divide the two-layer cowhide embryos into two layers through a leather peeling machine to obtain two pieces of leather;

[0043] (3) Spraying: Spray a layer of glue on the surface of each layered leather;

[0044] (4) Lamination: Lay a layer of super fiber on the surface of the leather.

[0045] In the step (2), the thickness of the second layer of cowhide is 0.13 cm, and the thickness of the leather material after peeling is 0.06 cm.

[0046] In the step (3), the sprayed glue is hot melt adhesive, and the hot melt adhesive is composed of the following raw materials in parts by weight:

[0047] 40 parts of oleoresin

[0048] High acid value resin 20 parts

[0049] Thermoplastic polymer 10 parts

[0050] Polytetrahydrofuran diol 10 parts

[0051] Polymethy...

Embodiment 2

[0062] The difference between this embodiment and above-mentioned embodiment 1 is:

[0063] In the step (2), the thickness of the second layer of cowhide is 0.14 cm, and the thickness of the skin after peeling is 0.065 cm.

[0064] In the step (3), the sprayed glue is hot melt adhesive, and the hot melt adhesive is composed of the following raw materials in parts by weight:

[0065] 60 parts of oleoresin

[0066] High acid value resin 30 parts

[0067] Thermoplastic polymer 20 parts

[0068] Polytetrahydrofuran diol 5 parts

[0069] 10 parts of polymethyl methacrylate

[0070] Talc powder 10 parts

[0071] 3 parts plasticizer

[0072] 2 parts of coupling agent

[0073] Antioxidant 1 part.

[0074] The oily resin is methylphenyl polysiloxane resin or organic silicon resin.

[0075] The high acid value resin is alkyd resin or modified phenolic resin.

[0076] The thermoplastic high polymer is SEPS, SBR or EVA.

[0077] The plasticizer is polyisobutylene, polybutadiene o...

Embodiment 3

[0080] The difference between this embodiment and above-mentioned embodiment 1 is:

[0081] In the step (2), the thickness of the second layer of cowhide is 0.15 cm, and the thickness of the leather material after peeling is 0.07 cm.

[0082] In the step (3), the sprayed glue is hot melt adhesive, and the hot melt adhesive is composed of the following raw materials in parts by weight:

[0083] 80 parts of oleoresin

[0084] High acid value resin 40 parts

[0085] Thermoplastic polymer 30 parts

[0086] Polytetrahydrofuran diol 20 parts

[0087] 15 parts of polymethyl methacrylate

[0088] Talc powder 12 parts

[0089] 4 parts plasticizer

[0090] 3 parts of coupling agent

[0091] Antioxidant 1.5 parts.

[0092] The oily resin is silicone resin, terpene tackifying resin or hydrogenated petroleum resin.

[0093] The high acid value resin is modified phenolic resin or modified terpene resin.

[0094] The thermoplastic high polymer is POE, TPU or APAO.

[0095] The pla...

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Abstract

The invention relates to the technical field of leather processing, and in particular relates to a production technology for preparing leather by using scytoblastema of genuine leather. The production technology comprises the following steps of (1) material selection, namely adopting scytoblastema of genuine leather; (2) leather splitting, namely splitting the scytoblastema of the genuine leather into two layers through a splitting machine to form two pieces of leather; (3) spraying, namely spraying a layer of glue on the surface of each piece of layered leather; and (4) lamination, namely laminating a layer of super-fiber on the surface of the leather. The production technology is simple in step, convenient to operate and control, stable in quality, high in production efficiency, cheap and available in raw materials, high in leather utilization rate and low in production cost; massive industrialized production can be carried out; the quality of the prepared product leather is similar to that of top layer leather; the additional value of the product leather is greatly improved; and the production technology is wide in application and high in economic benefits.

Description

technical field [0001] The invention relates to the technical field of leather processing, in particular to a production process for preparing leather by using two-layer cowhide embryos. Background technique [0002] Leather is widely used on the surface of daily necessities, such as tables and chairs, sofas, shoe materials, clothing, etc., to add texture, beauty or durability to daily necessities. Leather can be broadly classified into artificial leather and natural leather. Natural leather refers to taking animal fur and drying, cleaning, softening, dyeing, trimming, cutting and other production processes to form a smooth surface and tough texture. [0003] Due to the insufficient fineness and poor gloss of the existing two-layer cowhide, it can only be used to make the inner lining of the leather material, and cannot be used as the surface layer material of the product. The application range is limited, and the economic benefit of the obtained leather material is not hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14B7/04C14B1/02C14C11/00C14C9/00
CPCC14B1/02C14B7/04C14C9/00C14C11/00
Inventor 陈承涛
Owner DONGGUAN TIANYI LEATHER TECH CO LTD
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