POLYESTER HOT-MELT BINDER FIBER
PURPOSE:To titled fibers, consisting of a polyester having a specific softening point and melt viscosity, having a high crimpness, bondable to a material without reducing the bulkiness of base fibers in a small amount without melting by washing with hot water, and useful for preparing wadding, etc....
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To titled fibers, consisting of a polyester having a specific softening point and melt viscosity, having a high crimpness, bondable to a material without reducing the bulkiness of base fibers in a small amount without melting by washing with hot water, and useful for preparing wadding, etc. CONSTITUTION:A mixture of terephthalic acid with isophthalic acid, etc. as an acid component is esterified with ethylene glycol, etc. as a glycol component and then polycondensed under heating and under reduced pressure in an autoclave to give a polyester polymer having a softening point in the range of 100-150 deg.C and a melt viscosity =1,000 poises at 190 deg.C. The resultant polymer is then melt spun to afford the aimed binder fibers having a precentage crimp >=8%. |
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