Method of improving melt spinning of linear ethylene polymers

Details Method of improving melt spinning of linear ethylene polymers Method of improving melt spinning of linear ethylene polymers

1991-08-27

1993-10-19

Thurlow, Jeffrey

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

264169, 2641761, 2642108, 425198, 425199, 425464, D01D 110

Patent

active

052542998

ABSTRACT:
An improved method of melt spinning linear polyethylene into fiber, especially fine denier fiber, with minimal fiber breakage is disclosed. The method includes imparting high shear into the polyethylene just prior to extrusion through the spinneret die and also results in lower die swell. The high shear can be imparted by use of sintered metal filter media, multiple stacks of fine mesh screens or similar shear inducing media. The method is especially effective when the linear polyethylene contains a relatively high molecular weight species, as determined using gel permeation chromatography with a low angle laser light scattering detector.

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