A kind of clean production method of tpo modified tpu synthetic leather

A clean production and synthetic leather technology, applied in textiles and papermaking, etc., can solve the problems of TPU synthetic leather product promotion difficulties, high TPU resin price, no TPU resin, etc., to overcome the small hardness adjustment range and hydrolysis resistance And feel good, the production process and products are completely environmentally friendly

Active Publication Date: 2018-12-21
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current TPU synthetic leather has the following problems: First, the optional hardness range of TPU used for synthetic leather production is usually between 65A and 95A (measured by Shore A durometer), and there is no industrialized TPU resin lower than 65A, nor That is to say, there is no optional TPU resin for the production of soft TPU synthetic leather; second, the high price of TPU resin makes it difficult to promote TPU synthetic leather products; third, a single TPU is prone to sticking to rollers during calendering , making it difficult to produce

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A clean production method of TPO modified TPU synthetic leather, comprising the following steps:

[0035] (1) Using a calendering production line, add the material of the foam layer to the high-speed kneader, stir in the high-speed kneader for 5 minutes, and when the temperature of the material reaches 95°C, discharge the material; The heating rate is raised to 110°C for 5 minutes and then enters the plastic mixer, and the temperature is raised to 130°C for 10 minutes at a heating rate of 15°C / min, then enters the calender, and is rolled into a foam layer film. The thickness is 0.5mm, and the calendering temperature is 130°C; then the foam layer film is bonded to the non-woven fabric, and the bass is obtained after coiling;

[0036] Wherein, the foaming layer material includes 100 parts of TPO modified TPU, 20 parts of powdered calcium carbonate, 1 part of toner, 1 part of foaming agent, 0.06 parts of pentaerythritol phosphite and polycarbonated 0.25 parts of diimine; ...

Embodiment 2

[0040] A clean production method of TPO modified TPU synthetic leather, comprising the following steps:

[0041] (1) Using a calendering production line, add the material of the foaming layer to the high-speed kneader, stir in the high-speed kneader for 6 minutes, and discharge the material when the material temperature reaches 90°C; The heating rate is raised to 170°C for 3 minutes and then enters the plastic mixer, and the temperature is raised to 140°C for 5 minutes at a heating rate of 18°C / min, then enters the calender, and is rolled into a foam layer film. The thickness is 0.1mm, and the calendering temperature is 175°C; then the foam layer film is laminated with the knitted fabric, and the bass is obtained after coiling;

[0042] Wherein, the foaming layer material includes 100 parts of TPO modified TPU, 100 parts of powdered calcium carbonate, 2 parts of toner, 3 parts of foaming agent, 0.05 parts of pentaerythritol phosphite and polycarbonated 0.5 parts of diimine; w...

Embodiment 3

[0046] A clean production method of TPO modified TPU synthetic leather, comprising the following steps:

[0047] (1) Using a calendering production line, add the foamed layer material into a high-speed kneader, stir in the high-speed kneader for 8 minutes, and discharge when the temperature of the material reaches 100°C; The heating rate is raised to 140°C for 4 minutes and then enters the plastic mixer, and the temperature is raised to 150°C for 8 minutes at a heating rate of 17°C / min, then enters the calender, and is rolled into a foam layer film. The thickness is 1mm, and the calendering temperature is 150°C; then the foam layer film is laminated with the woven fabric, and the bass is obtained after coiling;

[0048] Wherein, the foaming layer material includes 100 parts of TPO modified TPU, 50 parts of powdered calcium carbonate, 5 parts of toner, 2 parts of foaming agent, 0.08 parts of pentaerythritol phosphite and polycarbonated 0.1 part of diimine; wherein, the TPO-mod...

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Abstract

The invention relates to a clean production method of TPO modified TPU synthetic leather. The cleaning production method includes: using a calendaring production line to add foaming-layer materials into a kneading machine, kneading, feeding the kneaded foaming-layer materials into an internal mixer, performing internal mixing, feeding the mixed materials into a plasticator, plasticating, feeding the plasticated materials into a calendaring machine, calendaring into a forming-layer thin film, allowing the foaming-layer thin film to attach to base cloth, and reeling to obtain a base; adding surface-layer materials into the kneading machine, kneading, feeding the kneaded surface-layer materials into an internal mixer, performing internal mixing, feeding the mixed materials into a plasticator, plasticating, feeding the plasticated materials into a calendaring machine, calendaring into a surface-layer thin film, allowing the surface-layer thin film to attach to the base, foaming in a foaming drying box, performing knurling or pattern sucking, cooling, and reeling to obtain the TPO modified TPU synthetic leather. The clean production method has the advantages that no organic solvents are used in the method, so that solvent pollution is avoided; the method is simple to operate and stable in process; the produced TPO modified TPU synthetic leather is excellent in mechanical performance, good in quality, wide in hardness regulating range and low in cost.

Description

technical field [0001] The invention relates to a production method of synthetic leather, in particular to a clean production method of TPO modified TPU synthetic leather. Background technique [0002] The main products of the synthetic leather industry include artificial leather, synthetic leather and microfiber synthetic leather. These products are composite materials that simulate the tissue structure and performance of natural leather and can be used as natural leather substitutes. Usually, polyurethane (PU) and polyvinyl chloride (PVC) microporous coatings are mostly used to simulate the grain layer of natural leather, and non-woven or woven fabrics are used as the base material to simulate the mesh layer of natural leather. In the usual classification, those based on woven fabrics are called artificial leather, those based on non-woven fabrics are called synthetic leather, and those based on superfine fiber base cloth are called superfine fiber synthetic leather. Used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/0006D06N3/0009D06N3/0011D06N3/0045D06N3/0059D06N3/143D06N2209/16D06N2211/28
Inventor 马兴元赵昭段月丁博刘帅张铭芮
Owner SHAANXI UNIV OF SCI & TECH
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