Superfine suede fiber leather and preparation method thereof

A microfiber leather, microfiber technology, applied in chemical instruments and methods, synthetic resin layered products, textiles and papermaking, etc., can solve the problem of low tear strength and peel strength, uneven surface, transfer film Insufficient bonding and other problems, to achieve the effect of high peel strength, high tear resistance and rich color layers

Inactive Publication Date: 2013-03-20
浙江元新实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some problems in the process of preparing suede microfiber leather products, such as when the transfer film is attached, the transfer film is not bonded firmly, the surface is uneven after the transfer film is attached, and the obtained suede microfiber leather has poor wear resistance. , low tear strength and peel strength

Method used

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  • Superfine suede fiber leather and preparation method thereof

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preparation example Construction

[0016] The invention provides a method for preparing suede superfine fiber leather, which comprises the following steps: setting a suede superfine fiber base; printing layer; and laminating the high-solid pattern, peeling off after cooling to obtain suede microfiber leather; wherein, the solid content of the polyurethane resin slurry used to form the high-solid printing layer is 42% to 50%, The viscosity is 3000pa·s~6000pa·s.

[0017] In the prior art, in order to obtain suede microfiber leather with high tear and peel strength, researchers have made various choices in the selection of suede microfiber base and transfer film, hoping to find more suitable materials; Or various adjustments are made to the temperature, pressure or time of printing when forming the bonding layer, in order to expect to obtain suede microfiber leather with better wear resistance, high tear and peel strength. The present invention creatively uses polyurethane resin slurry with a solid content of 42%...

Embodiment 1

[0032] Set a 0.8mm thick suede ultra-fine bottom blank, use polyurethane resin with a solid content of 50% and a viscosity of 6000pa·s for pulping, use acetone as a solvent, and add leather pigment color chips during the pulping process to obtain Polyurethane resin slurry with a solid content of 44% and a viscosity of 3500pa·s.

[0033] Adjust the gap between the high-solid printing wheel and the rubber roller to make it 0.1mm smaller than the thickness of the suede microfiber bottom blank, transfer the polyurethane resin slurry to the suede superfine fiber bottom blank through the high-solid printing wheel, and Pass through an oven at 100° C. at a speed of 7 m / min to obtain a high-solid printing layer with patterns or patterns.

[0034] Adjust the pressure of the laminating mirror roller to 3MPa, and the temperature is 100°C. The gap between the laminating mirror roller and the rubber roller is 0.1mm smaller than the thickness of the suede microfiber bottom blank. After the l...

Embodiment 2

[0036] Set a 1.1mm thick suede ultra-fine bottom blank, use polyurethane resin with a solid content of 55% and a viscosity of 7000pa·s for pulping, use acetone as a solvent, and add leather pigment color chips during the pulping process according to customer needs , to obtain a polyurethane resin slurry with a solid content of 46% and a viscosity of 4500 Pa·s.

[0037] Adjust the gap between the high-solid printing wheel and the rubber roller to make it 0.15mm smaller than the thickness of the suede microfiber bottom blank, transfer the polyurethane resin slurry to the suede superfine fiber bottom blank through the high-solid printing wheel, and Pass through an oven at 110° C. at a speed of 7 m / min to obtain a high-solid printing layer with patterns or patterns.

[0038] Adjust the pressure of the laminating mirror roller to 4MPa, and the temperature is 110°C. The gap between the laminating mirror roller and the rubber roller is 0.15mm smaller than the thickness of the suede m...

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Abstract

The invention discloses superfine suede fiber leather and a preparation method thereof. The method comprises the following steps: setting a superfine suede fiber base blank; forming a high solid printed layer with set patterns on the superfine suede fiber base blank in accordance with the set patterns; carrying out adhesion transfer membrane treatment on the high solid printed layer; and peeling after being cooled down so as to obtain the superfine suede fiber leather, wherein the solid content of polyurethane resin size used for forming the high solid printed layer is 42-50 percent, and the viscosity is 3,000 pa.s to 6,000 pa.s. By adopting the polyurethane resin size with such viscosity and solid content as the high solid printing size, the high solid printed layer obtained from the printing sufficiently warps the villus of the superfine suede fiber, so that better caking property is maintained, and the superfine suede fiber with good abrasion resistance, tearing and peeling strength is obtained; and meanwhile the physical property of the superfine suede fiber self is reserved with rich color gradation, and the color and the suede feeling have diversity in different angles.

Description

technical field [0001] The invention relates to the technical field of ultrafine fibers, in particular to a suede ultrafine fiber leather and a preparation method thereof. Background technique [0002] At present, the common film leather on the market is generally genuine leather film and synthetic leather film, which are mainly used in the production of women's shoes and handbags. However, the price of using the whole leather as a genuine leather film is too high and the waste is serious; while the physical properties of a synthetic leather film are too low to be practical. In view of the above reasons, suede microfiber hot film leather products have become a popular new variety. However, there are some problems in the process of preparing suede microfiber leather products, such as when the transfer film is attached, the transfer film is not bonded firmly, the surface is uneven after the transfer film is attached, and the obtained suede microfiber leather has poor wear res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/12B32B27/06B32B37/26B32B38/14
Inventor 黄自存钱国庆
Owner 浙江元新实业有限公司
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