Method for continuous preparation of polyethylene material havin

Details Method for continuous preparation of polyethylene material havin Method for continuous preparation of polyethylene material havin

1990-04-27

1992-04-21

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

With reshaping or surface embossing of formed article

264120, 264126, B29C 4322

Patent

active

051065584

ABSTRACT:
A method for the continuous preparation of a polyethylene having high strength and high modulus of elasticity is here disclosed which comprises the steps of mixing 100 parts by weight of an ultra-high-molecular-weight polyethylene powder having an intrinsic viscosity of 5 to 50 dl/g in decalin at 135.degree. C. with 2 to 50 parts by weight of a liquid organic compound having a boiling point higher than the melting point of the polyethylene, feeding the resulting mixture to between a pair of upper and lower endless belts facing each other, continuously compression-molding the mixture at a temperature less than the melting point of the mixture by pressing means disposed inside the endless belts, and rolling and then drawing the same.

REFERENCES:
patent: 3387073 (1968-06-01), Larsen
patent: 3492310 (1970-01-01), Carrow
patent: 3923947 (1975-12-01), Cook
patent: 4612148 (1986-09-01), Motooka et al.
patent: 4879076 (1989-11-01), Sano et al.
patent: 4996011 (1991-02-01), Sano et al.
patent: 5002714 (1991-03-01), Sano et al.

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