Manufacture method for PU embossed color-changing decoration leather

A manufacturing method and technology for decorative leather, applied in lamination devices, chemical instruments and methods, lamination and other directions, can solve the problems of long pressure change time, insufficient back surface cleanliness, insufficient bright colors, etc.

Active Publication Date: 2012-10-24
ZHEJIANG HEXIN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing embossed color-changing decorative leather on the market has poor surface flatness, loose and flat hand feeling, weak color contrast after hot pressing (the color depth before and after pressure change is generally below 10), and the color is not bright enough. , Unclear texture after pressure deformation, high pressure deformation temperature and long pressure deformation time (generally, the pressure deformation temperature is above 180°C, and the pressure deformation time is generally above 10 seconds) and other shortcomings; in addition, the cleanliness of the back is not enough, causing bonding performance Poor, seriously affect subsequent processing performance

Method used

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  • Manufacture method for PU embossed color-changing decoration leather

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (a) Prepare the spunlace nonwoven fabric (thickness 0.4mm, density 80g / m 2 , the fiber is viscose fiber), unwind and iron;

[0040] (b) Scrape-coat pressure-change polyurethane working slurry, the formula ratio of the working slurry is calculated as:

[0041] High modulus resin (HX-7240HV): 20 parts,

[0042] Low modulus resin (HX-7087): 80 parts,

[0043] Solvent (DMF): 100 parts,

[0044] Filler (FD600 / 30): 15 parts,

[0045] Organic color paste (BLPW-100): 2 parts,

[0046] Organic color paste (BLPW-200): 2 parts,

[0047] Organic color paste (BLPW-556): 2 parts,

[0048] Pore ​​conditioner (OT-70): 1 part,

[0049] Defoamer (SHY-7725): 0.2 parts,

[0050] Leveling agent (JFR-930): 0.3 parts;

[0051] The viscosity of the working slurry is 2500cps / 30°C, and the coating amount is 1.5kg / m; the time for the non-woven fabric to enter the coagulation bath after scraping the working slurry is 20s;

[0052] (c) coagulation and water washing, the mass fraction of D...

Embodiment 2

[0055] (a) Prepare the spunlace nonwoven fabric (thickness 0.4mm, density 65g / m 2 , the fiber is viscose polyester fiber), unwinding and ironing;

[0056] (b) Scrape-coat pressure-change polyurethane working slurry, the formula ratio of the working slurry is calculated as:

[0057] High modulus resin (HX-7185): 25 parts,

[0058] Low modulus resin (HX-7055): 75 parts,

[0059] Solvent (DMF): 110 parts,

[0060] Filler (ZCD-HAO-001): 20 parts,

[0061] Organic color paste (BLPW-100): 1 part,

[0062] Organic color paste (BLPW-300): 1 part;

[0063] Organic color paste (BLPW-556): 1 part,

[0064] Pore ​​conditioner (S-11): 2 parts,

[0065] Defoamer (DX-25): 0.1 parts,

[0066] Leveling agent (DX-ACR): 0.1 parts;

[0067] The viscosity of the working slurry is 4000cps / 30°C, and the coating amount is 1kg / m; the time for the non-woven fabric to enter the coagulation bath after scraping the working slurry is 45s;

[0068] (c) Coagulation and water washing, the mass fract...

Embodiment 3

[0071] (a) Prepare the spunlace nonwoven fabric (thickness 0.4mm, density 80g / m 2 , the fiber is viscose fiber), unwind and iron;

[0072] (b) Scrape-coat pressure-change polyurethane working slurry, the formula ratio of the working slurry is calculated as:

[0073] High modulus resin (HX-7300): 30 parts,

[0074] Low modulus resin (HX-7121): 70 parts,

[0075] Solvent (DMF): 90 parts,

[0076] Filler (DL-522): 15 parts,

[0077] Organic color paste (BLPW-200): 3 parts,

[0078] Organic color paste (BLPW-300): 3 parts,

[0079] Organic color paste (BLPW-556): 3 parts,

[0080] Pore ​​conditioner (OT-70): 1 part,

[0081] Pore ​​conditioner (SD-80): 2 parts,

[0082] Defoamer (DX-25): 0.4 parts,

[0083] Leveling agent (DX-ACR): 0.7 parts;

[0084] The viscosity of the working slurry is 3800cps / 30°C, and the coating amount is 2kg / m; the time for the non-woven fabric to enter the coagulation bath after scraping the working slurry is 43s;

[0085] (c) Coagulation and wat...

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Abstract

The invention provides a manufacture method for PU embossed color-changing decoration leather. According to the method, a layer of polyurethane work slurry prepared by using a wet method is coated onto a spunlaced non-woven fabric, and concrete steps of the method comprise: (a) preparing base cloth and unreeling and ironing the base cloth; (b) coating the polyurethane work slurry changeable at a pressure with a knife, wherein a formula for the work slurry comprises, by mass, 20 to 40 parts of high-modulus resin, 80 to 60 parts of low modulus resin, 90 to 200 parts of a solvent, 15 to 25 parts of a filling material, 3 to 15 parts of color paste, 0 to 4 parts of a microporous regulator, 0.1 to 1 part of an antifoaming agent and 0.1 to 1 part of a leveling agent; (c) carrying out solidification and rinsing; and (d) carrying out drying and reeling, wherein drying temperature is 120 to 155 DEG C. The prepared decoration leather has stiff and smooth touch, smooth surface and neat back; temperature for thermal changes of the decoration leather at a pressure is adjustable and is in a range of 165 to 180 DEG C; time for changes at a pressure is short; and the color of the decoration leather having undergone changes at a pressure is brilliant and full, presenting great contrast.

Description

technical field [0001] The invention relates to a method for manufacturing PU embossed color-changing decorative leather, that is, a method for manufacturing PU embossed color-changing decorative leather with adjustable pressure change temperature, short pressure change time, smooth surface, clean back, and strong pressure change color contrast . Background technique [0002] The hot-press discoloration of PU (polyurethane) leather products is mainly the process of re-melting and changing after the resin is softened at high temperature. When they come together, the thickness becomes thinner, and the thinner place becomes darker, brighter and fuller due to the higher concentration of pigment. [0003] The existing embossed color-changing decorative leather on the market has poor surface flatness, loose and thin hand feeling, weak color contrast after hot pressing (the color depth before and after pressure change is generally below 10), and the color is not bright enough. , ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00B32B27/12B32B27/40B32B37/15
Inventor 张玉洲王艳丽周志军澎文斌沈玉美
Owner ZHEJIANG HEXIN NEW MATERIAL CO LTD
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