Trademark leather and preparation method thereof

A trademark leather and dry process technology, applied in the field of synthetic leather, can solve the problems of poor surface wear resistance and scratch resistance, poor pressure change effect, inconspicuous color change and pressure change texture, etc., and achieve good tensile strength and elongation. rate, to achieve natural luster, good effect of hot pressing

Inactive Publication Date: 2013-04-24
HANGZHOU RAINBOW PIGMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the high-quality label leather on the market adopts wet process, and uses expensive color-changing resin as the bottom

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0043] Example one

[0044] Trademark leather and its preparation method:

[0045] (1) Top coat: 100 parts by weight of weak solvent type dry PU resin with 200 modulus are fully dissolved in 50 parts by weight of DMF to prepare the top base slurry, and the base is coated on the release with a doctor blade On the paper, the coating thickness is 0.05mm, and then it is dried at 120°C and normal pressure for 3 minutes.

[0046] (2) Coating discoloration layer: Add the following parts by weight to the B90-2F mixer produced by Hangzhou Instrument Factory: 223 parts of aliphatic dry PU resin with 50 modulus, 24 parts of DMF, 18 parts of ethyl acetate, high modulus Measure 3 parts of PU resin particles, 6 parts of fumed silica and 34 parts of polypropylene wax powder. Stir evenly at 2000 rpm to make color-changing PU resin. Add 4 parts by weight of rainbow RP color paste and mix evenly. Use a doctor blade to coat the base slurry into the color-changing layer on the top layer with a coating...

Example Embodiment

[0048] Example two

[0049] Trademark leather and its preparation method:

[0050] (1) Top coat: 100 parts by weight of low-solvent dry PU resin with 200 modulus is fully dissolved in 60 parts by weight of DMF to prepare the top base slurry, and the base is coated on the release with a doctor blade On the paper, the coating thickness is 0.05mm, and then it is dried at 120°C under normal pressure for 3 minutes.

[0051] (2) Coating discoloration layer: Add the following parts by weight to the B90-2F mixer produced by Hangzhou Instrument Factory: 23 parts by weight of aliphatic dry PU resin with 50 modulus, 26 parts of DMF, 19 parts of ethyl acetate, high modulus Measure 4 parts of PU resin particles, 7 parts of fumed silica and 36 parts of polypropylene wax powder, stir evenly at 2000 rpm to make color-changing PU resin, add 6 parts by weight of rainbow RP color paste, stir evenly, configure Use a doctor blade to coat the base slurry into the color-changing layer on the top layer wi...

Example Embodiment

[0053] Example three

[0054] Trademark leather and its preparation method:

[0055] (1) Top coat: 100 parts by weight of weak solvent type dry PU resin with 200 modulus is fully dissolved in 70 parts by weight of acetone to prepare the top base slurry, and the base is coated on the release with a doctor blade. On the paper, the coating thickness is 0.05mm, and then it is dried at 120°C and normal pressure for 3 minutes.

[0056] (2) Coating discoloration layer: Add the following parts by weight to the B90-2F mixer produced by Hangzhou Instrument Factory: 21 parts of aliphatic dry PU resin with 50 modulus, 23 parts of DMF, 18 parts of ethyl acetate, high modulus Measure 3 parts of PU resin particles, 6 parts of fumed silica and 33 parts of polypropylene wax powder. Stir uniformly at 2000 rpm to make color-changing PU resin. Add 5 parts by weight of rainbow RP color paste and mix evenly. Use a doctor blade to coat the base slurry into the color-changing layer on the top layer with a...

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PUM

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Abstract

The invention belongs to the technical field of synthetic leather, and particularly relates to trademark leather and a preparation method thereof. The trademark leather provided by the invention comprises a top layer, a discoloration layer and a bonding layer, wherein the discoloration layer is prepared by the following raw materials in part by weight: 20 to 25 parts of aliphatic dry PU (Polyurethane) resin, 20 to 30 parts of DMF (Dimethyl Formamide), 17 to 20 parts of acetic ether, 3 to 5 parts of high-modulus PU resin particles, 5 to 8 parts of gaseous phase silica and 30 to 40 parts of polypropylene wax powder. The preparation method of the trademark leather is as follows: complying with the traditional dry method process, i.e., performing process procedures of coating a top layer, drying, coating a discoloration layer, drying, coating a bonding layer and drying; and the preparation method is characterized in that through adjusting the parameter setting of each coating, the trademark leather with low cost, clear patterns after rolling, obvious difference with base color, scratch resistance and abrasion resistance can be prepared, and can be used for stamping a branch LOGO, a character and a pattern and the like.

Description

technical field [0001] The invention belongs to the technical field of synthetic leather, and in particular relates to trademark leather and a preparation method thereof. Background technique [0002] Trademark leather, also known as pressure-change PU, after the trademark leather is subjected to external pressure, the color of the leather surface changes, and the pattern color after hot pressing is darker than the original background color, with obvious differences, which enhances the visual effect , beautify the appearance of the product, can be embossed brand LOGO, text, patterns, etc., mainly used in high-end notebooks, notepads, trademark production, universal manuals, award certificates, business card books, business card bags, check holders, key cases, silver bags, passport bags, manager bags, leather gifts, etc. [0003] The high-quality trademark leather currently on the market adopts a wet process, and uses expensive color-changing resin as the bottom layer of the...

Claims

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Application Information

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IPC IPC(8): D06N3/14B32B27/18
Inventor 李叶培韩莉华
Owner HANGZHOU RAINBOW PIGMENT CO LTD
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