Method for producing water-proof salmon leather

Abstract

The invention provides a production method for a waterproof salmon leather, which performs waterproof treatment to the leather during the tanning process with a specific waterproof tanning agent, the waterproof tanning agent is got by mainly mixing acrylic acid multi-chain alkyl ester, unsaturated anhydride ester and N-hydroxymethyl benzamide in weight proportion of 8-12: 5-7:6-10, emulsifying with water, and then dipping formic acid to adjust the pH value to about 1.4-1.6. After the leather is tanned by the waterproof tanning agent, water-repellent group forms between fibers, the waterproof ability of the leather and the final leather product has improved, and the contractibility of the leather and the structure stability of the fiber can also be increased. The production method of the invention also has special treatment to the surface pattern of the leather, which makes the leather both beautiful and waterproof.

Description

technical field [0001] The invention relates to a production process of waterproof fish leather, in particular to a production method for producing waterproof salmon leather by tanning and finishing processes on salmon skin. Background technique [0002] Salmon (or salmon, rainbow trout, Salmon) is abundant in my country, and it is usually processed into refined meat products for export in large quantities to earn foreign exchange. The leftover fish skin that is eliminated during the processing process is too strong due to the fishy smell. People don't like to eat it and are abandoned, so they can't earn foreign exchange. If these fish skins can be utilized and turned into wealth, it will have very practical significance. [0003] Because salmon skin has a unique natural and beautiful appearance and natural patterns, if it is processed into leather, it is used to make leather products such as clothing, belts, ties, bags, wallets, or other decorations. It not only has use val...

AI Technical Summary

Problems solved by technology

In 1998, Shi Xuelin and others studied the structural characteristics of salmon skin, and introduced the processing technology of salmon leather ("Research on the development of salmon leather", "China Leather" 1998 No. 04), according to this technology. The salmon leather produced has no special waterproof treatment, which cannot meet the waterproof and washable properties of leather products, so the practicability and durability are not good

In 2005, people such as Zhang Jingbin also proposed a kind of technique that utilizes salmon skin to make full-bodied leather ("Study on the process of making full-bodied leather with salmon skin", "China Leather" 2005 No. 21), although in this process It is mentioned that after retanning, fatliquoring is used to endow salmon leather with a certain degree of water resistance. However, since the fiber layer of the leather itself has not been waterproofed, the waterproof effect is not long-lasting, and the purpose of making the leather truly waterproof cannot be achieved.

However, in the existing salmon leather preparation process, the fish skin pattern has not been specially arranged, and the aesthetic effect cannot be achieved; even in some processes, the fish skin is usually pressed by a scalding machine for many times, and the natural texture on the fish leather The fish scale pattern is crushed to death, coupled with the coating, it is impossible to achieve the natural beauty of the fish scale pattern, and the characteristics of opening and closing freely, but the grade of the fish leather is lowered.