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Tanning method for fish skin and after finishing method for fish skin leather

A post-finishing and fish skin technology, which is applied in small raw hide/big raw hide/leather/fur treatment, small raw hide/big raw hide/leather skin/fur chemical treatment, special leather manufacturing, etc. It can solve the problems affecting the quality of fish skin tanning, Unable to enter into commercial industrial production and other problems, to achieve the effect of being conducive to development and utilization, low tanning cost, and good hand feeling

Inactive Publication Date: 2004-04-28
沈玉良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the adhesion, softening and elastic properties of the fish scale holes in the reticular layer cannot be well solved, it will not only directly affect the tanning quality of the fish skin, but also cannot enter the commercial industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: black fish skin tanning method, pretreatment: fresh fish skin is packed in the rotating drum, injects normal temperature water, the weight ratio of fish skin and water is 1: 1, adds 3% salt (NaCl) by fish weight, Start the drum to rotate for 1 hour, take out the fish skin, remove the remaining fish meat on the skin, then add salt water according to the same proportion to the drum, cast the skin and wash for half an hour; deashing: pour water into the groove, the liquid ratio 1, add 3% boric acid (H 3 BO 3 ), put into the wet bare hide, stir and soak for 4 hours, then wash with water for 5 minutes; softening: pour water into the scratching groove, the liquid ratio is 0.8, the water temperature is 30°C, add 0.2% compound protease, 0.4% neutral protease, ammonium sulfate 6%, put the wet skin preheated at 30°C into the above solution and stir it with a wooden stick for 1 hour, squeeze the bare skin with your fingers, and when fingerprints can be left, the sof...

Embodiment 2

[0011] Embodiment 2: black fish skin tanning method, pretreatment: fresh fish skin is packed in the rotating drum, injects normal temperature water, the weight ratio of fish skin and water is 1: 1, adds 4% salt (NaCl) by fish weight, Start the drum to rotate for 1 hour, take out the fish skin, remove the remaining fish meat on the skin, then add salt water according to the same proportion to the drum, cast the skin and wash for half an hour; deashing: pour water into the groove, the liquid ratio 1, add 2% boric acid (H 3 BO 3 ), put into the wet bare hide, stir and soak for 5 hours, then wash with water for 10 minutes; softening: pour water into the scratch groove, liquid ratio 1, water temperature 35°C, add 0.1% compound protease, 0.6% neutral protease, ammonium sulfate 5%, put the wet skin preheated at 35°C into the above solution and stir it with a wooden stick for 2 hours, squeeze the bare skin with your fingers, and when fingerprints can be left, the softening is complet...

Embodiment 3

[0012] Embodiment 3: black fish skin tanning method, pretreatment: fresh fish skin is packed in the rotating drum, injects normal temperature water, the weight ratio of fish skin and water is 1: 1, adds 3.5% salt (NaCl) by fish weight, Start the drum to rotate for 1 hour, take out the fish skin, remove the remaining fish meat on the skin, then add salt water according to the same proportion to the drum, cast the skin and wash for half an hour; deashing: pour water into the groove, the liquid ratio 1. Add 2-3% boric acid (H 3 BO 3 ), put into the wet bare hide and stir and soak for 4.5 hours, then wash with water for 7.5 minutes; 5.5%, put the wet skin preheated at 32.5 ℃ into the above solution and stir with a wooden stick for 1.5 hours, squeeze the bare skin with your fingers, and when fingerprints can be left, the softening is completed; pickling: pour normal temperature water into the groove, The liquid ratio is 1, add 6.5% salt (NaCl), 0.5% formic acid (HCHO), the measur...

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PUM

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Abstract

The fish skin leather processing method includes painting acrylic resin onto tanned fish skin, the first ironing and shaping in leather ironing machine after drying, spraying the mixture of polyurethane and acrylic resin onto the fish skin, the second ironing and shaping in leather ironing machine after drying, spraying the mixture of nitrocellulose brightener and slip agent onto the fish skin, the third ironing and shaping in leather ironing machine after drying, and spraying the mixture of feeling agent and waterproof agent onto the fish skin. The advantages include good feeling, high tensile strength, cold resistance, water proofing, no delaminating, high penetrating and beautiful grain of the processed fish leather; low processing cost, less pollution, etc. The skin leather is suitable for making various leather products.

Description

[0001] Field technology field: [0002] The invention relates to a method for processing fish skin leather, which is mainly used for tanning and finishing of black fish and herring skin leather. Background technique: [0003] 1. Authorized announcement number CN1046551C, name "Tanning of plateau naked carp skin and its products", the production method includes pretreatment of fresh fish skin; re-immersion in aqueous solution of salt and sodium bisulfite; immersion in soda ash solution Soaking in alkali; softening and pickling in an aqueous solution containing salt, nitric acid, sulfuric acid, and 3350 acid protease; Rinsing, neutralization; dyeing; washing and fatliquoring; grinding; softening; dust removal, finishing, hanging and other processes. The tanning of this kind of fish skin is only suitable for the processing and production of plateau naked fish, not for the tanning of fish skin with fish scales. [0004] 2. Approval number CN1004078B, title "Method for preparing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/00C14C13/00
Inventor 沈玉良
Owner 沈玉良
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