Energy-saving and environment-friendly fine deep processing method for beaver rabbit skin

Abstract

The invention discloses an energy-saving and environment-friendly fine deep processing method for beaver rabbit skin, which comprises the following steps: 1) shunting and grouping; 2) soaking water; 3) secondarily soaking water; 4) removing meat; 5) softening and soaking acid; 6) tanning; and 7) post finishing, wherein the soaking water solution contains Supralan 80, Actival OLN and Fulguran APC; the secondary soaking water solution contains anhydrous sodium sulfate, formic acid, Supralan 80 and Wetter HAC; the softening and soaking acid solution contains Super lotan A, salt, lactic acid, acetic acid and Wetter HAC, and is added with Pelgrassol LP and Eskatan GLS; and the tanning solution contains edible ammonium alum, salt, mirabilite and Wetter HAC, and is added with Novaltan PF, Novaltan AL, Prinol M31 Spezial and edible sodium bicarbonate. The method simplifies the process, saves the using amount of chemical materials and water, reduces the manpower and energy consumption, reduces sewage production and discharge, greatly reduces the residual quantity of harmful chemical substances on the skin, and remarkably improves the quality of the skin.

Description

Technical field [0001] The invention belongs to a deep processing method of animal skin, in particular to a deep processing method of rex rabbit skin. Background technique [0002] In the prior art, the traditional deep processing method of rex rabbit skin includes the following steps: 1. Separate batches: divide the rex rabbit skins into batches according to old, medium and tender, and separate them into batches, and pick out skins without processing value for further processing; 2. Soak in water : Put the skin into a container containing chemical formaldehyde and industrial salt, put water until the skin is completely submerged, and immerse in water for 16 to 24 hours; 3. Degreasing: Put a degreasing agent and soda ash in the container to prepare a degreasing solution. Under the condition of 36-38 ℃, cast the skin and wash it, rinse it with clean water at the specified time, and dry it with a dryer to remove the skin; 4. Re-soaking: put Glauber’s salt, sulfuric acid, and J...

AI Technical Summary

Problems solved by technology

There are following deficiencies in the above-mentioned technology: 1. The liquid used in the five processes of immersion, degreasing, re-immersion, washing and neutralization (referring to the solution of chemical material and water, the same below) is all disposed after processing a batch. The cycle of liquid recycling in the three processes of softening, pickling and tanning is also relatively short. After processing three to four batches, the liquid needs to be replaced, and the utilization efficiency of the liquid is relatively low.

2. The number of skins in each batch is small, the liquid ratio is relatively large, and the amount of chemical materials and water is large, resulting in waste of chemical materials and water. The water consumption of each skin is 40-60L

3. There are many processes, the process is cumbersome, and the consumption of manpower and energy is large

4. The amount of sewage generated is large, about 30-50L of sewage will be generated after each hide is tanned

5. There are a certain amount of harmful chemical substances left in the tanned hide, which is easy to cause harm to the human body

The discharged sewage contains a large amount of harmful residues and is difficult to purify

6. After tanning, the leather board is not soft, lacks fullness, the wool is not flexible, and the color is not bright

The load elongation of the skin is small, and the tensile strength is relatively low