Preparation method of polyurethane synthetic leather for soft-suede high-elasticity leather-imitated sofa furniture

A high-elasticity, artificial leather technology, applied in furniture parts, home appliances, applications, etc., can solve the problems of obvious incision wet material layer, poor leather feeling, poor drape feeling, etc., to achieve a delicate, soft and plump touch and strong drape feeling. , the effect of small wrinkles

Inactive Publication Date: 2016-11-09
ANHUI ANLI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional synthetic leather for polyurethane sofas is veneered by wet method, but there are problems such as obvious incision wet material layer and relatively poor leather feeling.
The cloth base is directly veneered, the finished cloth feels stronger, the wrinkles are larger, the drape is poor, and the overall touch is far from that of real leather.

Method used

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  • Preparation method of polyurethane synthetic leather for soft-suede high-elasticity leather-imitated sofa furniture
  • Preparation method of polyurethane synthetic leather for soft-suede high-elasticity leather-imitated sofa furniture
  • Preparation method of polyurethane synthetic leather for soft-suede high-elasticity leather-imitated sofa furniture

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Experimental program
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Effect test

preparation example Construction

[0035] A preparation method of polyurethane synthetic leather for soft suede high elasticity imitation leather sofa furniture, comprising the following steps:

[0036] (1) Use suede elastic fiber synthetic cloth base as raw material, the plush side of suede elastic fiber synthetic cloth base as the front, and the short-pile suede side of suede elastic fiber synthetic cloth base as the back, using wet process, impregnated and water-resistant Depolyether polyurethane impregnating slurry is formed at one time. The wet process is to impregnate the cloth base with hydrolysis-resistant polyether polyurethane impregnating slurry. Use a scraper to trim the excess slurry on the long-pile surface, and then use a sharp knife to modify the short-pile surface before condensing in water. Finally, water coagulation, water washing, and drying. The wet method adopts a one-time molding process of knife-scraping and impregnating polyether-type hydrolysis-resistant polyurethane slurry. Before wate...

Embodiment 1

[0060] The raw materials of polyether polyurethane impregnating slurry are composed as follows by mass:

[0061]

[0062]

[0063] In the three-knife slurry of dry veneer:

[0064] Flour: 180kg of polyester polyurethane resin ST-2066, 0.5kg of anti-wear additive 3238 solution, 2kg of PU white;

[0065] Two-knife slurry: polyester polyurethane resin ST-2066 180kg, PU white 2kg

[0066] Adhesive paste: polyester polyurethane resin SA-36 90kg, solvent ETAC 30kg, curing agent 2681kg

[0067] The viscosity of the polyether polyurethane impregnation slurry is 600cps, the temperature is 25°C, the scraping gap is 0.15mm, the sharp knife is scraped and modified before entering the water, and the angle between the sharp knife and the leather surface is 90°. The solidification condition is that the temperature is 30°C, and the concentration of the DMF solution is 26wt%,

[0068] In step (1), the washing temperature is 40°C-50°C, and the temperature is 120°C-140°C when drying in ...

Embodiment 2

[0073] The raw materials of polyether polyurethane impregnating slurry are composed as follows by mass:

[0074]

[0075] In the three-knife slurry of dry veneer:

[0076] Flour: 150kg polyester polyurethane resin ST-2066, 0.5kg anti-wear additive 3238 solution, PU white 2kg;

[0077] Two-knife slurry: polyester polyurethane resin ST-2066 150kg, PU white 2kg

[0078] Adhesive paste: polyester polyurethane resin SA-36 100kg, solvent ETAC 30kg, curing agent 2681kg

[0079] Other processing conditions are as embodiment 1.

[0080] The peeling strength of polyurethane synthetic leather for artificial leather sofa furniture produced in the above examples reaches 40N / 3cm, the durability reaches 3 years, and the bending at room temperature reaches 100,000 times without breaking. Plump, with a strong granular feel on the back, a delicate, soft and plump touch, a strong leather feel, and a very high cost performance.

[0081] Remarks: Accelerator SF-7 is Jiande Shunfa Chemical A...

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Abstract

The invention discloses a preparation method of polyurethane synthetic leather for soft-suede high-elasticity leather-imitated sofa furniture. According to the preparation method, a suede elastic fiber synthetic cloth base with good elasticity and toughness is adopted, a plush surface is taken as a front surface during wet process processing, and a knife-scraping and impregnation once forming process is adopted, so that the impregnation volume of slurry of the cloth base can be increased, the combination between polyurethane resin and suede fiber cloth base is relatively tight, and the bonding strength is relatively high; meanwhile, a buffing machine is utilized for carrying out buffing-galling process processing, so that the flatness and the bonding strength are relatively high during dry method veneering; soaking and line-rubbing aftertreatment is carried out. The finished polyurethane synthetic leather for the leather-imitated sofa furniture is not provided with a wet process layer and is more approximate to leather, surface patterns are more plump, the granular sensation on the back is strong, the touch feel is fine, flexible and plump, and the leather sense is strong; meanwhile, the polyurethane synthetic leather has the characteristics that the peel strength is high, the wear resistance is high, the normal-temperature deflection is good, the tear strength is high, the hydrolysis resistance can reach 3 years, and the cost performance is very high.

Description

technical field [0001] The invention relates to the field of preparation methods of polyurethane synthetic leather, in particular to a preparation method of polyurethane synthetic leather for soft suede and high elasticity imitation leather sofa furniture. Background technique [0002] At present, synthetic leather products are gradually becoming a popular trend in the future, and polyurethane synthetic leather is widely used in the production of various sofa furniture products. Traditional synthetic leather for polyurethane sofas is veneered by wet method, but there are problems such as obvious incision wet material layer and relatively poor leather feeling. Through the direct veneer of the cloth base, the finished cloth has a strong sense of cloth, large wrinkles, poor drape, and the overall touch is far from that of real leather. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing polyurethane synthetic leather f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/14C08L75/08C08L75/06
CPCC08L75/06C08L75/08C08L2205/025D06N3/0027D06N3/0059D06N3/0061D06N3/0075D06N3/0088D06N3/145D06N2209/103D06N2209/143D06N2209/1635D06N2209/1642D06N2209/1664D06N2209/1685D06N2211/14D06N2211/28D06N2213/02
Inventor 邢高瞻徐学权钟元成赵伟栋杜东旭程艳西黄万里
Owner ANHUI ANLI MATERIAL TECH
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