Finishing method of non-permeable cattle corrected grain leather
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A kind of finishing leather and finishing technology, which is applied in the finishing field of non-transparent yellow buffalo leather. It can solve the problems of rough base, discontinuous film formation, and thick fluff, so as to achieve soft, plump and elastic bones, and cover the disabled. The effect of good resistance and uniform surface gloss
Active Publication Date: 2014-03-26
JIHUA 3514 LEATHER & FOOTWARE
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Problems solved by technology
In the prior art, when processing non-transparent and defective yellow cattle shaved leather, the crust leather is only surface dyed, and the leather heart is extremely light blue. After grinding, the surface of the crust leather is whitish, and the fibers are brittle and hard, and the fluff is thick. In the process of coating, there will be poor leveling of the coating, discontinuous film formation, often causing coating astigmatism, cracking, and bottom exposure. When used in shoemaking, it is easy to cause coating peeling and substrate roughness. Not only can it not be used It is used in the production of shoes, and the processing process is labor-intensive and material-intensive, so it can only be scrapped, resulting in huge losses.
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Embodiment １
[0085] Example 1 A kind of finishing method of non-transparent yellow cattle repaired leather
[0086] The method comprises the steps of:
[0087] (1) Grinding surface
[0088] Put 240-mesh sandpaper into the leather grinding machine, grind the dry uncoated crust leather, remove the grain layer, make the length of the piles consistent, and the depth of defects become shallower, forming crust A;
[0089] (2) Dust removal
[0090] Clean the surface of the crust A by using a dedusting machine to remove the grinding dust on the surface of the crust A to form the ground crust B;
[0091] (3) Primer
[0092] Dip the primer solution, brush evenly on the surface of the ground leather B, and fill the fiber gaps of the leather at the same time, so that the surface color is basically the same, forming the base leather C;
[0093] Wherein, the active ingredient of described primer comprises:
[0148] The finishing method of the impervious dyed yellow cattle trimmed leather used in embodiment 2-4 is similar to the finishing method of embodiment 1, and the difference is only that the parameters used therein are different, specifically as follows:
[0149]
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Abstract
The invention provides a finishing method of non-permeable cattle corrected grain leather, which comprises the following steps: grinding the surface, removing dust, precoating, carrying out vacuum drying, carrying out secondary surface grinding, carrying out secondary dust removal, cleaning the surface, brushing a bottom coat, embossing, spraying a surface coat, spraying gloss oil, carrying out secondary embossing, ironing and the like. According to the corrected grain leather prepared by the finishing method provided by the invention, the grain has similar flatness and fineness to the whole grain as well as favorable defect covering power, and the leather body is flat, soft, full and resilient, and has the advantages of even surface gloss, uniform color and no greasiness; and the leather body also has the advantages of high smoothness, no crease, no loose grain, no crack grain, no decolorization and no slurry cracking. The invention solves the problems of diffused coating, slurry cracking, exposed ground, crude and creased grain and the like in the non-permeable defective cattle corrected grain leather, and is suitable for finishing corrected grain leather.
Description
technical field [0001] The invention belongs to a leather finishing method, in particular to a finishing method for imperviously dyed yellow cattle trimmed leather. Background technique [0002] As a natural material, leather has some congenital defects in its grain layer, and leather that has been trimmed can fully improve its utilization efficiency. For the crust leather that is dyed through the whole body, the processing will be easier because the color of the inside and outside of the pre-treatment is basically the same. In the prior art, when processing non-transparent and defective yellow cattle shaved leather, the crust leather is only surface dyed, and the leather heart is extremely light blue. After grinding, the surface of the crust leather is whitish, and the fibers are brittle and hard, and the fluff is thick. In the process of coating, there will be poor leveling of the coating, discontinuous film formation, often causing coating astigmatism, cracking, and bott...
Claims
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Application Information
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