Process of making molecularly oriented polymer profiles

Details Process of making molecularly oriented polymer profiles Process of making molecularly oriented polymer profiles

1996-05-10

1998-09-15

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264237, B29C 4790

Patent

active

058075160

ABSTRACT:
A continuous process for the production of an oriented high modulus profile is provided together with the novel profiles produced thereby. A dry polymer feedstock is melted and extruded through a die to form a profile precursor having a constant cross-section and specific dimensions. Sequential passage of the profile precursor through roller dies reduces its thickness whilst imparting molecular orientation thereto. The profile is cooled under tension to freeze in the molecular orientation thereof.

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The Strength and Stiffness of Polymers, Anagnostis E. Zachariades and Roger S. Porter, "Plastics Engineering 4", Chapter 1 (Solid-State Extrusion of Thermoplastics), pp. 1-50 (Undated).

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