Hogskin suede vamp leather after-tanning wet finishing method

Abstract

The invention discloses a hogskin suede vamp leather after-tanning wet finishing method which comprises the following steps: squeezing of hogskin vamp blue wet leather, primary shaving (flesh side), secondary light shaving (grain surface), wet milling, weighing, rewetting, water washing, retanning, water washing, neutralizing, water washing, primary greasing, filling, water washing, bulging, primary drying, secondary drying, remoistening, softening by vibration, dry milling, weighing, tempering, water washing, dyeing, secondary greasing, top dyeing, water washing, bulging, drying, remoistening, softening by throwing, (other steps), scaling, and warehousing. The finished product has the advantages of thin and short fuzz and no obvious pores, and is basically uniform; and the leather is plump and soft, has the advantages of high thickness, favorable fastness and high yield.

Description

technical field

[0001] The invention belongs to the field of leather tanning, in particular to a post-tanning wet finishing method of pigskin nubuck upper leather. Background technique

[0002] Pigskin nubuck upper leather (also known as pig leather in the market) is processed through pigskin tannin. In the market, the requirements for high-quality pig leather are: no obvious pores, fine and dense hair, basically uniform; thickness above 0.9mm, generally 1.2-1.5mm; full and soft leather body, good fastness; small part difference, Less trimming, high leather yield.

[0003] The main structural characteristics of pigskin:

[0004] (1) The grain surface is rough, and there are generally three pig hairs on the leather surface, arranged in a font. The pores are trumpet-shaped at the exit of the leather surface and appear particularly thick. Grain papilla has obvious protrusions and deep grooves, so the grain surface appears rough;

[0005] (2) The position difference is larg...