| abstract |
In the double release fiber and a method for producing the same, the double melt fiber is produced by measuring the spinning melt, extruding the compound spinneret, cooling, oiling, drawing, heat setting, and winding, and the fiber material is modified polyester, Has a matting agent dispersed therein, and the molecular chain of the modified polyester includes a terephthalic acid chain segment, an ethylene glycol chain segment and a diol chain segment having a branched chain, and the diol structure having the branched chain is HO-R 1 -C (R 3 ) (R 4 ) -R 2 -OH, R 1 and R 2 are independently selected from linear alkylene groups having 1 to 3 carbon atoms, R 3 are selected from alkyl groups having 1 to 5 carbon atoms, R 4 is selected from alkyl groups having 2 to 5 carbon atoms. The matting agent is a mixture of amorphous titanium dioxide and amorphous silicon dioxide or a mixture of calcium carbonate and silicon dioxide. |