Pig skin processing steps
Disease-free, scar-free and hair-free pig skin can be selected as raw material for drying. Soak the peeled pig skin in warm water for 30 minutes, then brush it with a bamboo brush or plastic brush. Scrape off the dirt on the epidermis with a knife, clean the dirt, and remove the miscellaneous hair. Do not try to use a sharp knife to shave to avoid affecting the quality of the finished product. Use a knife to repair the residual fat on the surface of the meat skin, and then cut and reshape the cleaned and fat-removed pork skin. Traditional processes in some areas require slitting after cooking. The size of the slit skin is between 5-10 square centimeters, and should not exceed 10 square centimeters, otherwise it will be difficult to pack after oil explodes. Cut the skin into small pieces and reshape it, otherwise it will easily cause broken pieces after packaging, transportation and sales. According to market demand, the pig skin can also be shredded, diced and make into other shapes to meet different customers’ needs. Put the sliced skin on the material grid tray, insert the material grid tray into the material trolley like a drawer, push the material trolley into the drying room, and the drying process can start.
Pig skin drying process
According to the 6P heat pump dryer with drying and dehumidification integrated host, it is equipped with a polyurethane thermal insulation drying room with a length of 5.8 meters, a width of 3 meters and a height of 2.2 meters. 8 material carts can be loaded at one time, and each material cart can be loaded with 100 kg of cooked pig skin, totaling 800 kg. The temperature is set at 45C- -60°C, and the drying process is divided into three stages.
At the first stage, the temperature is 45 ° C, the time is 5 hours, and should continuously dehumidify the moisture.
The temperature of the second stage is 55°C, the time is 5 hours, and should continuously dehumidify the moisture.
The temperature of the third stage is 60 ° C, the time is set for 8 hours, and should continuously dehumidify the moisture. The color of the dried pigskin is brownish yellow or tan, and it will be dried into curled shape. The drying process could be finished until no marks on the pigskin if you press it with fingers.