| 摘要 |
Method for winding textile threads to filter bobbins for filtration purposes of petrochemicals, by, in a first operation, winding 4 layers laid at 30 degrees both ways, in a second operation winding 5 layers laid at 40 degrees both ways, in a third operation winding 9 layers laid at 35 degrees both way s, in a fourth and last operation winding 12 layers laid at 15 degrees one way and just with 50 degree transfer back for each layer, and repeating the firs t, second, third and fourth operations, the threads used thereby comprising 58 % cotton, 16 % acryl, 11,5 % flax, 11,5 % polyester, 2 % polyamide, 0,6 % acetate and 0,4 % viscose.
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