Manufacturing method for antifouling and doodle-preventing polyurethane (PU) synthetic leather

A manufacturing method and anti-graffiti technology, applied in the field of synthetic leather manufacturing, can solve the problems of poor stain resistance and low surface energy

Inactive Publication Date: 2013-10-23
慈文传媒股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Resins containing organic silicon and organic fluorine compounds have extremely low surface energy after film formation, so they can resist staining and graffiti from water-based inks (after staining, they can be wiped clean with a damp cloth), but for widely used oil-based inks Poor stain resistance, requires solvents to wipe clean

Method used

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  • Manufacturing method for antifouling and doodle-preventing polyurethane (PU) synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (a) Prepare synthetic leather dry-laid semi-finished products (using twill weave wet-laid base, using AP-T D90 release paper pattern), unwinding;

[0041] (b) Use the printing process to treat a layer of anti-fouling and anti-graffiti polyurethane working paste on the surface of the semi-finished product. The formula of the working paste is calculated as:

[0042] Ordinary polyurethane finishing resin (HT-109): 50 parts,

[0043] Antifouling and antigraffiti polyurethane resin (LS-91-077): 50 parts,

[0044] Antifouling and antigraffiti crosslinking agent (MA-2491): 5 parts,

[0045] Solvent (DMF): 50 parts,

[0046] Color paste: 5 parts,

[0047] The viscosity of the working slurry is 2000cps / 25℃, and the coating amount is 60g / m 2 ;

[0048] (c) drying and curing, the drying and curing temperature is 130°C, and the drying and curing time is 3 minutes;

[0049] (d) cooling and winding to obtain high anti-fouling and anti-graffiti polyurethane synthetic leather.

Embodiment 2

[0051] (a) Prepare synthetic leather cold-pressed semi-finished products (using plain weave wet-laid bottom blank, BN9 cold-pressed roller pattern), and unwind;

[0052] (b) Apply a roller coating process to treat a layer of anti-fouling and anti-graffiti polyurethane working paste on the surface of the semi-finished product. The formula of the working paste is calculated by mass as follows:

[0053] Antifouling and antigraffiti polyurethane resin (CF-113): 100 parts,

[0054] Antifouling and antigraffiti crosslinking agent (CA-263): 20 parts,

[0055] Solvent (MEK): 10 parts,

[0056] Color paste: 6 parts,

[0057] Other additives (JN3-018): 1 part;

[0058] The viscosity of the working slurry is 4000cps / 25℃, and the coating amount is 70g / m 2 ;

[0059] (c) Drying and curing, the drying and curing temperature is 150°C, and the drying and curing time is 4 minutes;

[0060] (d) Cooling and winding to obtain oily and waxy polyurethane synthetic leather with high anti-fouli...

Embodiment 3

[0062] (a) Prepare synthetic leather cold-pressing-finishing semi-finished products (use plain weave wet-laid bottom blank, BN9 cold-pressing roller pattern, print AN0 cloud color), and unwind;

[0063] (b) Apply a spraying process to treat a layer of anti-fouling and anti-graffiti polyurethane working slurry on the surface of the semi-finished product. The formula of the working slurry is calculated by mass as follows:

[0064] Ordinary polyurethane finishing resin (BLLK-7048N): 40 parts,

[0065] Antifouling and antigraffiti polyurethane resin (HH-LACK8008): 60 parts,

[0066] Antifouling and antigraffiti crosslinking agent (HH-LACK505): 3 parts,

[0067] Anti-fouling and anti-graffiti accelerator (HH-LACK303): 6 parts,

[0068] Solvent (EA): 100 parts,

[0069]Color paste: 10 parts,

[0070] Other additives (JN3-056): 0.5 parts;

[0071] The viscosity of the working slurry is 100cps / 25℃, and the coating amount is 150g / m 2 ;

[0072] (c) Drying and curing, the drying ...

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Abstract

The invention relates to a manufacturing method for antifouling and doodle-preventing polyurethane (PU) synthetic leather. The manufacturing method comprises the steps of (a) preparing a synthetic leather semi-product and unwinding the semi-product; (b) coating a layer of antifouling and doodle-preventing polyurethane work slurry on the surface of the semi-product by a post-finishing coating process; (c) drying the work slurry at a temperature of 130 DEG C-160 DEG C, wherein a drying and curing time is 1 min-5 min; and (d) cooling and winding to get the high antifouling and doodle-preventing polyurethane synthetic leather. By using a reactive organic fluorinated polyurethane resin or organic silicone polyurethane resin and curing and clinking at a high temperature after the post-finishing process, extremely low surface energy is given to the PU synthetic leather, so that the PU synthetic leather has excellent antifouling property and doodle-preventing property, and particularly can endure doodles by oil-based ink. The manufacturing method is simple in implementation process, and a finished product has excellent physical properties and hand feel.

Description

technical field [0001] The invention belongs to the field of synthetic leather manufacture, and relates to a method for manufacturing PU synthetic leather, and a method for manufacturing antifouling and anti-graffiti PU synthetic leather. Background technique [0002] In recent years, PU synthetic leather has been used more and more in home sofas and wall decorations, among which the application and demand for light-colored products have grown the fastest. Choosing bright and vivid colors for home decoration has become a future development trend. However, light-colored sofas and wall decoration products are not resistant to stains and graffiti. The existence of this problem has seriously affected the market demand and acceptance of this type of product. [0003] Resins containing organic silicon and organic fluorine compounds have extremely low surface energy after film formation, so they can resist staining and graffiti from water-based inks (after staining, they can be wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14B32B37/02B32B27/06
Inventor 夏宁秦江波陈永张玉洲
Owner 慈文传媒股份有限公司
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