Composite tubular film process and apparatus

Details Composite tubular film process and apparatus Composite tubular film process and apparatus

1971-08-09

1976-06-29

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264173, 264209, 264312, 4251335, B29F 310

Patent

active

039668614

ABSTRACT:
A method for producing extruded blown laminated film, wherein a plurality of layers of a molten thermplastic material are rotated about a common axis and combined during continuing rotation to form said film.

REFERENCES:
patent: 2944287 (1960-07-01), Moran
patent: 3008187 (1961-11-01), Slade
patent: 3099860 (1963-08-01), Schippers
patent: 3187982 (1965-06-01), Underwood et al.
patent: 3223761 (1965-12-01), Raley
patent: 3281897 (1966-11-01), Mercer
patent: 3349437 (1967-10-01), Quackenbush
patent: 3469282 (1969-09-01), Barnes
patent: 3520966 (1970-07-01), Soffiantini
patent: 3548042 (1970-12-01), Hinrichs

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