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Preparation method of dry-sheepskin-imitated polyurethane sofa leather

A technology of polyurethane and sofa leather, which is applied in the direction of textiles and papermaking, etc., which can solve the problems of unfavorable animal protection, heavy metal content easily exceeding the standard, and low yield of genuine leather products, etc., to achieve close tactile and visual effects, improve formula and process, and color uniform effect

Active Publication Date: 2016-06-15
马鞍山瑞高科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the environment of genuine leather is seriously polluted in its own production process, and the content of heavy metals is likely to exceed the standard, and the use of a large number of genuine leather products is not conducive to animal protection
In addition, the low yield of genuine leather in the process of processing makes its price high, which is difficult to be accepted by the working class.

Method used

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  • Preparation method of dry-sheepskin-imitated polyurethane sofa leather
  • Preparation method of dry-sheepskin-imitated polyurethane sofa leather
  • Preparation method of dry-sheepskin-imitated polyurethane sofa leather

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preparation example Construction

[0025] refer to figure 1 , the preparation method of imitation dry sheepskin polyurethane sofa leather provided by the invention comprises the following steps:

[0026] 1) Mix 40-60 parts by weight of 7010 polyurethane resin with a modulus of 80 and 40-60 parts by weight of RX220 cracking resin with a modulus of 80 in a ratio of 1:1, and add 40-70 parts by weight of dimethyl The combination of formamide, 30-50 parts by weight of ethyl acetate, 5-15 parts by weight of 6637 brown color paste and 2RN yellow color paste is mixed into slurry one by a mixer with a speed of 1000 rpm, and the slurry is coated with Form the first coating on the release paper, the thickness of the first coating is 0.12-0.15 mm; temperature gradient heating and drying: the oven temperature is set in steps from 80 degrees to 90 degrees to 100 degrees to 110 degrees, and the drying The drying time is 3 minutes, and the production speed is controlled at 15 m / min; the dry sheepskin surface layer with two-co...

Embodiment 1

[0037] 1) Mix 50 parts by weight of 7010 polyurethane resin with a modulus of 80 and 50 parts by weight of RX220 cracking resin with a modulus of 80 in a ratio of 1:1, add 50 parts by weight of dimethylformamide, 40 parts by weight ethyl acetate, the 6637 brown color paste of 5 parts by weight and the 2RN yellow color paste of 5 parts by weight are mixed into a slurry one by a stirrer at a speed of 1000 rpm, and the slurry is coated on the release paper to form the second One coating, the thickness of the first coating is 0.135 mm; temperature gradient heating and drying: the oven temperature is set in steps from 80 degrees to 90 degrees to 100 degrees to 110 degrees, the drying time is 3 minutes, and the production speed is controlled at 15 meters / minute; make the dry sheepskin surface layer of two-color pattern;

[0038] 2) Apply scraping slurry on the dry sheepskin surface layer prepared in step 1) to form an adhesive layer with a thickness of 0.14 mm, attach 120 grams of...

Embodiment 2

[0047] 1) Mix 40 parts by weight of 7010 polyurethane resin with a modulus of 80 and 40 parts by weight of RX220 cracking resin with a modulus of 80 in a ratio of 1:1, add 40 parts by weight of dimethylformamide, 30 parts by weight ethyl acetate, the 6637 brown color paste of 3 weight parts and the 2RN yellow color paste of 2 weight parts are mixed into a slurry one by a stirrer rotating at 1000 rpm, and the slurry is coated on the release paper to form the second One coating, the thickness of the first coating is 0.12 mm; temperature gradient heating and drying: the oven temperature is set in steps from 80 degrees to 90 degrees to 100 degrees to 110 degrees, the drying time is 3 minutes, and the production speed is controlled at 15 meters / minute; make the dry sheepskin surface layer of two-color pattern;

[0048] 2) Apply scraping slurry on the dry sheepskin surface layer prepared in step 1) to form an adhesive layer with a thickness of 0.12 mm, attach 110 grams of suede to...

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Abstract

The invention provides a preparation method of dry-sheepskin-imitated polyurethane sofa leather. The preparation method comprises the following steps: preparing a dry sheepskin surface layer with double-colored patterns through a dry method; scraping and coating a bonding layer on the surface layer, and fitting chamois leather fluff on the bonding agent; after carrying out gradient drying and curing, wetly bonding single-faced fluff and cotton-imitated fluff to prepare a semi-finished product; carrying out rear-phase treatment; and after rubbing lines and carrying out surface finishing on a coating, carrying out the gradient drying to obtain a finished product. According to the polyurethane sofa leather manufactured by using the method for manufacturing the dry-sheepskin-imitated polyurethane sofa leather, the touch feeling and the visual effect are similar with those of real sheepskin, the post-processing of the polyurethane sofa leather is easy and physical performances meet international leather utilization requirements.

Description

technical field [0001] The invention relates to a preparation method of polyurethane sofa leather, in particular to a preparation method of dry sheepskin imitation polyurethane sofa leather. Background technique [0002] Imitation dry sheep leather has been widely used in the use of sofas, office equipment and furniture. With the improvement of living standards, people have higher and higher requirements for the quality, environmental protection and comfort of sofa leather. The best choice for furniture leather in the market is real leather. However, the environment of genuine leather is seriously polluted in its own production process, and the content of heavy metals is easy to exceed the standard, and a large number of using genuine leather products is not conducive to animal protection. In addition, the low yield of genuine leather in the process of processing makes its price high and difficult to be accepted by the working class. Therefore, it has become a research an...

Claims

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Application Information

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IPC IPC(8): D06N3/00D06N3/14
CPCD06N3/0059D06N3/0065D06N3/0077D06N3/0097D06N3/145D06N2211/28
Inventor 高金岗高国华孙凤云高义辉
Owner 马鞍山瑞高科技有限公司
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