High-density polyethylene plexifilamentary fiber nonwoven fabric

Details High-density polyethylene plexifilamentary fiber nonwoven fabric High-density polyethylene plexifilamentary fiber nonwoven fabric

1996-03-12

1998-11-24

Bell, James J.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

4253823, 425404, D01F 600

Patent

active

058402349

ABSTRACT:
A three-dimensional plexifilamentary fiber (26) of a high-density polyethylene group obtained by supplying a polymer to a dissolving area in a state such that the polymer is melted by a heated screw extruder (compressing zone 13, metering zone 14 to 16), supplying a solvent (CCl.sub.3 F) into the melted polymer (feed opening 18), mixing and dissolving the polymer and the solvent to make a polymer solution, and extruding the polymer solution from a nozzle (24 in FIG. 24) arranged in the dissolving area into a low pressure area. A nonwoven fabric is obtained through a process in which the fiber (26) is spread by striking the fiber against a skirt portion (33) having a fiber swinging face (34) and a cushioning face (35), and this nonwoven fabric has an excellent strength, covering property, and whiteness.

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