Fur tanning, dyeing, fatliquoring by wet processing, be diverted into fur drying and finishing stage. The main processes are: drying, moisture regain, soft, soft, rolling mill, the hook plate degreasing, rinsing, carding, dust, refurbishment, scale, and acceptance. The processing of the object and the different processing methods, process, order, or number of repetitions to adjust. Through the action of the plate to light, thin, soft, hair was loose, flexible, bright, clean, without glochids, no quicksand.
1 dry tanned, fatliquoring of fur, in which the water content in general more than 60%, and fur product requirement for the moisture content in 12% ~ 18%. Wet skin plasticity, bast fiber unformed, unable to operate machinery, dry skin fiber tissue typing, to beautify. There are 4 kinds of commonly used methods of drying.
( L ) the natural drying fur flat on the ground or the skin hanging rod or rope, by the natural flow of the air, so that the skin is dry.
( 2) drying room and oven drying in the drying room or bake with plus cooked heat, blast, ventilation facilities, is not affected by environment climate impact, has fast drying speed, high efficiency characteristics.
( 3) fixed dry fur is fixed to the board or frame, and then drying. Prior to drying skin moisture control in 30% ~ 40%.
( 4) drum drying in a rotary drum through the air, rotate and drying, both rolling soft effect, and achieve the purpose of drying.
Regardless of which method to use dry, it is necessary to make the skin moisture distribution is uniform, the dried bark are piled up more than 12 hours, in order to balance skin moisture.
The 2 revival had dry skin, because the processing needs, the need to make it absorb water, called the resurgence or soft back.
Wet skin in dry, fiber in the bonding state, area contraction, skin appears plate rigid body. The resurgence of the purpose is to make the dried fur receive adequate moisture, softness, in order to shovel soft procedure for. Correct resurgence, require skin is too dry or floating, the skins moisture uniformity, the resurgence after percutaneous plate can be opened, and a white advisable. Water is a 18% ~ 20%. Optional moisture regain method, direct spray humidifying drum method
The 3 hook and shovel soft after resurgence of fur with the shovel, shovel hook soft machine, soft machine and grinding machine for plate with certain mechanical operation, so that the leather fiber loose, stretching, and removed the leather board meat residue, by staking, mill operation so that the skin to become soft, thinner, lighter, skin clean, taking care not to make the hair root exposed, not Diaomao
4 skin plate degreasing and rinse for some grease containing large fur sheep brick mink, rely on tanning preparation defatting is not enough, because the preparation stage, only remove the grease on the surface, within the dermis and much oil, if not removed net, will affect the use of fur. The finishing stage of percutaneous plate degreasing, used at present dry cleaner dry cleaning method.
The pi plate out of the skin after washing into the detergent solution, to further remove fur on the dirt, impurities and greasy, make the product soft, plump, improve the extensibility and air permeability, increased hair is shiny. Rinse the main equipment for the designated slot. Technical condition: liquid ratio is 30 litres / Zhang, detergent and 4 grams / liter, soda 0.5 grams / liter, temperature 50, time of 1 hours, pH 9.5 ~ 10.
5 roll, drawing in order to make the skin soft, hair is loose, flexible, bright, clean, remove floating color dyeing fur, increased hair is shiny, need for fur in roll.
Roll, stretching operation can be repeated many times. In order to enhance roll effect, in the sawdust can be added in the wash of fine sand and the amount of light gasoline or turpentine and other organic solvents.
6 dozen of hairs in roughing machine, removing dust, indumentum of sawdust.
7 general in carding machine carding on bonding, Mao Shukai, making Mao Zhao a certain direction, simultaneous removal of residues in wool in the sawdust, dust, floating hair, make the product looks beautiful. Required to operate carefully, try to lose hair, not to hurt the skin.
The 8 shearers in shearing machine, used in some low-grade leather imitation high-grade leather. After shearing, wool was leveled, and meet the requirements of long hair.
9 dust dust is removed by fur dust. Requirements of fur in the sun jitter, not dust as well. Dust can be used to cage. Precious flix preferably using vacuum cleaner dust.
10 scale by the quality inspection, measurement of skin area, to provide basis for tailoring workshop. Measuring, the area of error of no more than + 2%.
