Drying method for polyglycollide warp-knitted support meshes for artificial skin

A drying method for polyglycollide warp-knitted support meshes for artificial skin, specifically comprising:

• pre-drying, deep drying, and fabric stress relaxation, which are performed sequentially, the pre-drying being completed in a vacuum drying oven A, and the deep drying and the fabric stress relaxation being completed in a vacuum drying oven B, wherein:
• the process of pre-drying comprises:
• placing a polyglycollide warp-knitted support mesh, which is aired after being cleaned, in the vacuum drying oven A which is connected to a water-circulation vacuum pump, and setting a temperature in the vacuum drying oven A as T1;
• starting the water-circulation vacuum pump, keeping the vacuum drying oven running to treat the polyglycollide warp-knitted support mesh in the vacuum drying oven A under a vacuum degree P1 for a time t1, and then stopping the water-circulation vacuum pump;
• and slowly introducing air into the vacuum drying oven A to enable the vacuum drying oven A to return to normal pressure;
• the process of deep drying comprises:
• (1) placing the polyglycollide warp-knitted support mesh in the vacuum drying oven B which is connected to a sliding-vane rotary vacuum pump and an inert gas connecting tube;
• (2) at normal temperature, starting the sliding-vane rotary vacuum pump to decrease a vacuum degree of the vacuum drying oven B to P2, then stopping the sliding-vane rotary vacuum pump, and introducing an inert gas into the vacuum drying oven B to enable the vacuum drying oven B to return to normal pressure;
• (3) performing Step (2) multiple times;
• (4) starting the sliding-vane rotary vacuum pump, keeping the sliding-vane rotary vacuum pump running to perform drying treatment on the polyglycollide warp-knitted support mesh in the vacuum drying oven B under a vacuum degree P2 and a temperature T2 for a time t2;
• and (5) under the condition where the vacuum degree of the vacuum drying oven B is maintained at P2, increasing the temperature in the vacuum drying oven B to T3 at a heating rate T, maintaining the temperature in the vacuum drying oven B at T3 to treat the polyglycollide warp-knitted support mesh for a time t3, and stopping the sliding-vane rotary vacuum pump;
• the process of fabric stress relaxation comprises:
• introducing an inert gas into the vacuum drying oven B at a rate V, increasing the temperature in the vacuum drying box B to T4, treating the polyglycollide warp-knitted support mesh at the temperature T4 for a time t4, and then cooling the vacuum drying box B to normal temperature.