Molding element for producing thermoplastic film

Details Molding element for producing thermoplastic film Molding element for producing thermoplastic film

1978-07-10

1979-06-05

Schulz, William E.

Plastic article or earthenware shaping or treating: apparatus

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

264509, 425290, 425328, 425388, A01J 2100

Patent

active

041572378

ABSTRACT:
A rotatable perforated molding element for embossing and/or perforating thermoplastic sheet or film, the molding element including a series of perforated strips having two parallel sides and two parallel ends, the strips being wrapped about a supporting drum in a manner such that the ends of the molding strips lie in a plane generally perpendicular to the axis of rotation of the molding element and the sides of the adjacent strips contact each other, and a method for connecting the rotatable perforated molding element to a supporting drum including wrapping a series of perforated strips having two parallel sides and two parallel ends about the supporting drum in a manner such that the ends of the molding element lie in a plane generally perpendicular to the axis of rotation of the molding element and the sides of the adjacent strips contact each other, and securing the ends of the strips to the drum.

REFERENCES:
patent: 3054148 (1962-09-01), Zimmerli
patent: 3546742 (1970-12-01), Kugler
patent: 3708647 (1973-01-01), Barnhart
patent: 3814101 (1974-06-01), Kozak
patent: 4116594 (1978-09-01), Leanna et al.

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