Method for making liquid crystalline tube having a point

Details Method for making liquid crystalline tube having a point Method for making liquid crystalline tube having a point

1991-09-26

1992-09-29

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Orienting or aligning solid particles in fluent matrix material

264162, 2642093, 264296, 264323, 26432812, 26433121, B29C 4720

Patent

active

051512319

ABSTRACT:
A catheter assembly includes a tubing portion and a needle portion, at least one of which is a thermoplastic liquid crystalline polymer. The tubing and needle may be integral or unitary. The invention includes a method to make the assembly in which a melt of the liquid crystalline polymer is shear thinned by passing through an orifice such as an extrusion die to make tubing. The shear thinned melt may be directed into a mold having a point to make a liquid crystalline needle.

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patent: 4867174 (1989-09-01), Skribiski
patent: 4904433 (1990-02-01), Williamitis

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