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Manufacturing method of backer-free synthetic leather

A manufacturing method and technology of synthetic leather, applied in the field of synthetic leather manufacturing, can solve problems such as environmental and human health hazards, excessive solvent content, energy consumption, etc., and achieve unique visual effects

Active Publication Date: 2012-01-18
HUALUN LEATHER & PLASTIC SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of organic solvents (dimethyl formamide, methyl ethyl ketone, toluene, etc.) are used in the production process, and the solvents still have to be removed in the end, which consumes a lot of energy; at the same time, the sewage discharged from production and the heated exhaust gas are all Contains a lot of solvents. Although a lot of money has been invested in recycling and treating the environment, and more than 90% of the waste water and waste gas have been treated, the solvent content is still seriously exceeding the standard; ~1000ppm solvent
The presence of solvents has caused great harm to the environment and human health

Method used

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  • Manufacturing method of backer-free synthetic leather
  • Manufacturing method of backer-free synthetic leather
  • Manufacturing method of backer-free synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: a kind of manufacture method of bottomless synthetic leather, as shown in the accompanying drawing. Follow the steps below in order:

[0020] (1) Put 1.5 parts (parts by weight, the same below) of polyester fiber and 1 part of polyurethane elastomer in a sealed mixer at 20-100 rpm, and heat to 80-300°C for 5-30 minutes , and then compressed to a 0.5 mm sheet-substrate on a tablet press;

[0021] (2) Mix 1 part of polyurethane elastomer, 0.2 part of color masterbatch (colorant) and 1 part of silicone oil (auxiliary) evenly, heat it through the extruder at 100-350 °C and melt it, then extrude it into a film from the die head and Composite on the substrate produced in (1) stage;

[0022] (3) Using the pressure of 0.8 MPa in the tablet press, squeeze the carrier with texture on the surface of the above-mentioned diaphragm, so that the surface of the diaphragm has an ideal pattern;

[0023] (4) After the product produced in the (3) stage is cooled and shaped...

Embodiment 2

[0025] Embodiment 2: a kind of manufacture method of bottomless synthetic leather, as shown in the accompanying drawing. Follow the steps below in order:

[0026] (1) Put 0.75 parts (parts by weight, the same below) of Niu fiber and 0.75 parts of polyurethane elastomer in a sealed mixer at 20 to 100 rpm, and heat to 80 to 300°C for 5 to 30 Minutes, and then compressed on a tablet machine to a sheet of 2 mm - the base;

[0027] (2) Mix 1 part of TPE (styrene-based elastomer), 0.1 part of color masterbatch (colorant), and 0.5 part of paraffin (auxiliary) evenly, heat it through the extruder at 100-350 ℃ and melt it, and then extrude it through the die head Produce a film and compound it on the substrate produced in the (1) stage;

[0028] (3) Using the pressure of 0.5 MPa in the tablet press, squeeze the textured carrier on the surface of the above-mentioned diaphragm, so that the surface of the diaphragm has an ideal pattern;

[0029] (4) After the product produced in the (3...

Embodiment 3

[0031] Embodiment 3: A kind of manufacture method of bottomless synthetic leather, as shown in the accompanying drawing. Follow the steps below in order:

[0032] (1) Put 0.3 parts (parts by weight, the same below) of viscose fiber and 0.5 parts of polyurethane elastomer in a sealed mixer at 20-100 rpm and heat to 80-300°C for 5-30 Minutes, and then compressed on a tablet machine to a sheet of 1.5 mm - the base;

[0033] (2) Mix 1 part of TPAE (polyamide thermoplastic elastomer), 0.05 part of color masterbatch (colorant), 0.25 part of EVA (vinyl acetate copolymer) (auxiliary), and heat through the extruder at 100-350 °C After melting, it is extruded into a film from the die and compounded on the substrate produced in the (1) stage;

[0034] (3) Using the pressure of 0.4 MPa in the tablet press, squeeze the textured carrier on the surface of the above-mentioned diaphragm, so that the surface of the diaphragm has an ideal pattern;

[0035] (4) After the product produced in th...

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Abstract

The invention relates to a manufacturing method of backer-free synthetic leather and relates to a manufacturing method of synthetic leather. The manufacturing method comprises the following steps of: mixing and heating a thermoplastic high polymer polyamino elastomer and fibers, preparing substrates in different thicknesses by adopting a compression roller; then heating and melting a mixed material composed of the thermoplastic high polymer elastomer material, a dyeing agent and an auxiliary into a membrane by virtue of an extruding machine, wherein the membrane is tightly and uniformly distributed on the substrates, and a carrier provided with a decorative pattern is extruded onto the membrane; and after cooling, mutually separating the carrier and the membrane to obtain a primary product of the synthetic leather. The manufacturing method provided by the invention thoroughly changes the traditional process in the synthetic leather industry, no pollution is produced in the production process, and synthetic leather products are not polluted. The synthetic leather product has the advantages of unique and excellent visual effect, good abrasion performance and good high and low temperature resistance.

Description

technical field [0001] The invention relates to a method for manufacturing synthetic leather, in particular to a method for manufacturing synthetic leather without base fabric. Background technique [0002] Today, leather products with a wide variety of designs and colors can be seen everywhere in daily life, and a considerable share of these leather products is occupied by artificial leather and synthetic leather. Artificial leather and synthetic leather are an important part of the plastic industry and are widely used in various industries of the national economy. The so-called artificial leather and synthetic leather generally refer to artificial leather (referred to as artificial leather) produced with PVC (polyvinyl chloride) resin as raw material; artificial leather (referred to as PU leather) produced with PU (polyurethane) resin as raw material; Artificial leather (referred to as synthetic leather) produced with non-woven fabrics as raw materials. Generally speakin...

Claims

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Application Information

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IPC IPC(8): D06N3/14B32B37/10
Inventor 高金岗王俊峰赵忠印
Owner HUALUN LEATHER & PLASTIC SUZHOU
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