Machines for treating filaments of plastics materials

Details Machines for treating filaments of plastics materials Machines for treating filaments of plastics materials

1975-05-07

1976-10-26

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Press forming means, press reshaping means, or vulcanizing...

425335, B29C 1700, B29D 700, B29C 2500

Patent

active

039881016

ABSTRACT:
There is disclosed apparatus for the treatment of films of plastics material which comprises at least a basic unit having, in one section, grooved and heated roll means, and in another, following section, godet rolls. In use, films of fibrillatable plastics material, such as of polypropylene, which have been profiled to exhibit a plurality of parallel longitudinal enlarged portions, can be conveniently heated and hot-stretched, the grooved roll means being very effective for heating and traction purposes. The apparatus may include other units, and there may be additional sections in the basic unit, all preferably constructed on a modular system for cheapness and ease of assembly.

REFERENCES:
patent: 2928124 (1960-03-01), Hugger
patent: 3499185 (1970-03-01), Schmidt et al.
patent: 3531827 (1970-10-01), Drogonette
patent: 3565730 (1971-02-01), Weisshuhn
patent: 3570052 (1971-03-01), Reode
patent: 3581340 (1971-06-01), Thieme

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