Controlled nucleation of polypropylene in biaxially oriented fil

Details Controlled nucleation of polypropylene in biaxially oriented fil Controlled nucleation of polypropylene in biaxially oriented fil

1997-06-23

1998-11-17

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

264141, 264142, 2642106, B29B 906, B29C 4700, B29C 5514

Patent

active

058371770

ABSTRACT:
A method of making a polypropylene product for use in making biaxially oriented films. The method includes the addition of an improved nucleating system that allows for even distribution of a nucleating agent in the polymer material. The improved nucleating system comprises a nucleating agent and a liquid miscible with the nucleating agent. The solution is combined with the polypropylene material, and the miscible liquid is removed during processing. The resulting films possess superior processing and material characteristics.

REFERENCES:
patent: 5658514 (1997-08-01), Fujii et al.
patent: 5716570 (1998-02-01), Peiffer et al.

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