Apparatus for forming a cross-oriented film

Details Apparatus for forming a cross-oriented film Apparatus for forming a cross-oriented film

1975-07-17

1977-03-08

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With casting, plastic molding, or extruding means

156244, 264 95, 264177R, 425325, 425326R, 425328, 425391, 425393, B29D 2304

Patent

active

040111288

ABSTRACT:
An apparatus for forming a cross-oriented film which apparatus includes a device for maintaining the temperature of a thermoplastic synthetic resin tubular film below the melting point, and above the secondary transition temperature thereof, a twist-preventing device for pressing and feeding the tubular film in the film-forming direction, a cross-orientation device for holding the tubular film and for rotating the same, while vertically disposed, relative to the film-forming direction at a peripheral speed two or more times as fast as the feeding speed of the twist-preventing device, and a take-up device for successively flattening the tubular film into two layers.

REFERENCES:
patent: 3142092 (1964-07-01), Ralston
patent: 3296343 (1967-01-01), Buttolph
patent: 3635634 (1972-01-01), Nagano et al.
patent: 3807076 (1974-04-01), Bridge
patent: 3891374 (1975-06-01), Ninomiya et al.

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