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Manufacturing method of high-physical-property embossing dry-method environment-friendly sofa leather

A manufacturing method and technology of sofa leather, which is applied in textiles and papermaking, fabric surface trimming, thorn patterns, etc., can solve the problems of dry hand feeling, low grade, and poor genuine leather feeling

Active Publication Date: 2016-03-09
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 embossing dry-method environment-friendly sofa leather
  • Manufacturing method of high-physical-property embossing dry-method environment-friendly sofa leather
  • Manufacturing method of high-physical-property embossing dry-method environment-friendly sofa leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (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;

[0035] (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;

[0036] The polyurethane adhesive slurry formula is:

[0037] Waterborne PU resin (Leasys3458, solid content 50%): 100g

[0038] Microsphere foaming powder (FN100D): 10g

[0039] Solvent: 0g

[0040] The maximum drying temperature is 140 degrees Celsius.

[0041] (c) drying after coating HX-6051 on the release paper;

[0042] (d) Coating 0.1mm middle layer HX-8028 on the surface layer slurry obtained in step c and then drying;

[0043] (e) After coating HX-930G on the intermediate layer slurry obtained in step d, ...

Embodiment 2

[0046] (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;

[0047] (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;

[0048] The polyurethane adhesive slurry formula is:

[0049] Solvent-based PU resin (HX-9530, solid content 35%): 100g

[0050] Microsphere foaming powder (461DU20): 20g

[0051] Solvent DMF: 20g

[0052] The maximum drying temperature is 150 degrees Celsius.

[0053] (c) drying after coating HX-6081 on the release paper;

[0054] (d) drying after coating 1.8mmHX-9530 on the surface layer slurry obtained in step c;

[0055](e) After coating HX-9530 on the intermediate layer slurry obtained in step d, attach the base cloth, peel off the releas...

Embodiment 3

[0058] (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;

[0059] (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;

[0060] The polyurethane adhesive slurry formula is:

[0061] Waterborne PU resin (ImpranilLPRSC1537, solid content 60%): 100g

[0062] Microsphere foaming powder (551DU40): 40g

[0063] Solvent: 0g

[0064] The maximum drying temperature is 130 degrees Celsius.

[0065] (c) drying after coating Leasys3458 on the release paper;

[0066] (d) drying after coating 1.0mmImpranilLPRSC1537 on the surface layer slurry of c step gained;

[0067] (e) After coating HX-9530 on the middle layer slurry obtained in step d, semi-dryly p...

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

The invention provides a manufacturing method of high-physical-property embossing dry-method environment-friendly sofa leather. The manufacturing method includes the steps that 1, sofa leather base fabric including base fabric A and base fabric B is prepared; 2, the base fabric A is attached to the base fabric B through adhesive resin, the base fabric A is arranged on the base fabric B, microspheres foaming powder is added to the adhesive resin, and the composite base fabric is obtained after drying and foaming are conducted; 3, a piece of release paper is coated with a surface-layer sizing agent and then dried; 4, the release paper is coated with a middle-layer sizing agent and dried; 5, after the release paper is coated with bonding-layer resin, the composite base fabric is attached to the release paper, and the release paper is stripped after drying is conducted; 6, embossing and posttreatment are conducted, and a finished product is obtained. According to the method, base fabric of different knitting tightness is attached to one another through the adhesive resin, a tissue structure which is similar to natural leather and has a density gradient is obtained, and a product is high in genuine leather feeling; the excellent embossing property is obtained through the high-temperature molten deformation functions of a microspheres foaming layer, an adhesive layer and a dry-method layer; a wet-method coating is not used, hydrolysis resistance is improved, and residues of DMF are lowered.

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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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
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