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Manufacturing method of high physical property embossable dry process environmental protection sofa leather

A manufacturing method and technology of sofa leather, which are applied in textile and paper making, fabric surface trimming, thorn pattern, etc., can solve the problems of hollow, low grade and dry hand feeling.

Active Publication Date: 2017-12-08
ZHEJIANG HEXIN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional dry sofa leather coating is too thin (no wet coating), and the natural leather texture cannot be obtained through the embossing process. The grade is low, the hand feels dry, hollow, and the leather feels poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Manufacturing method of high physical property embossable dry process environmental protection sofa leather
  • Manufacturing method of high physical property embossable dry process environmental protection sofa leather
  • Manufacturing method of high physical property embossable dry process environmental protection sofa leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (a) Prepare sofa leather base fabric: A base fabric - 0.6mm, 190g / m 2 Woven fabric and B base fabric - 0.7mm, 180g / m 2 Raised knitted fabric on the back;

[0037] (b) Choose water-based polyurethane adhesive resin, and apply 40g / m on the back of A base fabric 2 The adhesive resin is bonded to the front of the B base fabric (the A base fabric is on the top, and the B base fabric is on the bottom), and the composite base fabric is obtained after drying;

[0038] The polyurethane adhesive slurry formula is:

[0039] Waterborne PU resin (Leasys 3458, solid content 50%): 100g

[0040] Microsphere foaming powder (FN 100D): 10g

[0041] Solvent: 0g

[0042] The maximum drying temperature is 140 degrees Celsius.

[0043] (c) drying after coating HX-6051 on the release paper;

[0044] (d) Coating 0.1mm middle layer HX-8028 on the surface layer slurry obtained in step c and then drying;

[0045] (e) After coating HX-930G on the intermediate layer slurry obtained in step d...

Embodiment 2

[0048] (a) Prepare sofa leather base fabric: A base fabric - 0.4mm, high tear paper, 150g / m 2 And B base fabric - 0.5mm, 200g / m 2 Microfiber synthetic leather base cloth;

[0049] (b) Choose a solvent-based adhesive resin, and coat 60g / m on the front of the B base fabric 2 Adhesive resin is bonded to the back of A base fabric (A base fabric is on top, B base fabric is below), and a composite base fabric is obtained after drying;

[0050] The polyurethane adhesive slurry formula is:

[0051] Solvent-based PU resin (HX-9530, solid content 35%): 100g

[0052] Microsphere foaming powder (461DU20): 20g

[0053] Solvent DMF: 20g

[0054] The maximum drying temperature is 150 degrees Celsius.

[0055] (c) drying after coating HX-6081 on the release paper;

[0056] (d) drying after coating 1.8mm HX-9530 on the surface layer slurry obtained in step c;

[0057] (e) After coating HX-9530 on the intermediate layer slurry obtained in step d, attach the base cloth, peel off the releas...

Embodiment 3

[0060] (a) Prepare sofa leather base fabric: A base fabric - 0.2mm, 100g / m 2 Knitted fabric and B base fabric - 0.9mm, 250g / m 2 Raised plain woven fabric on the back;

[0061] (b) Choose water-based adhesive resin and apply 80g / m on the back of A base fabric 2 The adhesive resin is bonded to the front of the B base fabric (the A base fabric is on the top, and the B base fabric is on the bottom), and the composite base fabric is obtained after drying;

[0062] The polyurethane adhesive slurry formula is:

[0063] Waterborne PU resin (Impranil LP RSC 1537, solid content 60%): 100g

[0064] Microsphere foaming powder (551DU40): 40g

[0065] Solvent: 0g

[0066] The maximum drying temperature is 130 degrees Celsius.

[0067] (c) drying after coating Leasys 3458 on the release paper;

[0068] (d) drying after coating 1.0mm Impranil LP RSC 1537 on the surface layer slurry obtained in step c;

[0069] (e) After coating HX-9530 on the middle layer slurry obtained in step d, se...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

A method for manufacturing high physical property embossable dry-process environment-friendly sofa leather, comprising (a) preparing a sofa leather base fabric: A base fabric and B base fabric; (b) laminating A base fabric and B base fabric through an adhesive resin (A base cloth is on the top, B base cloth is below), the adhesive resin is added with microsphere foaming powder, and the composite base cloth is obtained after drying and foaming; (c) after coating the surface layer slurry on the release paper Drying; (d) drying after coating the middle layer slurry; (e) after coating the adhesive layer resin, laminating the composite base cloth, peeling off the release paper after drying; (f) embossing, post-processing, Get the finished product. In this method, the base fabrics with different weaving densities are laminated by adhesive resin, and a structure similar to natural leather with a density gradient is obtained, and the product has a strong sense of genuine leather; with the help of high-temperature melting and deformation of the microsphere foaming layer, adhesive layer and dry layer Function, excellent embossability is obtained; no wet coating is used, the hydrolysis resistance is improved, and the residual amount of DMF is reduced.

Description

technical field [0001] The invention belongs to the field of synthetic leather manufacturing, and relates to a manufacturing method of PU synthetic leather and a manufacturing method of embossable dry-process environmental protection sofa leather. Background technique [0002] The problem of solvent residue (especially DMF residue) in traditional solvent-based synthetic leather products has always been a difficult problem for traditional synthetic leather. At present, the DMF residue in leather products stipulated by EU REACH regulations is below 1000mg / kg, and there is a tendency to be further strict. Traditional solvent-based synthetic leather has been unable to meet this trend, and it is urgent to find a production method that can effectively reduce DMF residues. [0003] The traditional sofa leather coating is generally composed of a wet layer and a dry layer. The wet coating manufacturing process requires the use of a large amount of DMF (polyurethane slurry and coagul...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/14D06C23/04
CPCD06C23/04D06N3/00D06N3/14D06N3/145
Inventor 周志军夏宁秦江波张玉洲陈永
Owner ZHEJIANG HEXIN NEW MATERIAL CO LTD