Rotary film blowhead for making tubular films of thermoplastic m

Details Rotary film blowhead for making tubular films of thermoplastic m Rotary film blowhead for making tubular films of thermoplastic m

1975-04-03

1976-03-30

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

425326R, B29F 300, B29D 2304

Patent

active

039471705

ABSTRACT:
A rotary blowhead for making tubular plastics film and comprising interior and exterior air cooling means is adapted to be centrally fed with plastics material from a stationary extruder and is connected to stationary air fans by means of segmented air distributing means.

REFERENCES:
patent: 3176347 (1965-04-01), Shaul
patent: 3445891 (1969-05-01), Thordarson
patent: 3450806 (1969-06-01), Matsuo et al.
patent: 3663133 (1972-05-01), Augustin et al.
patent: 3709290 (1973-01-01), Upmeier
patent: 3762853 (1973-10-01), Upmeier
patent: 3898028 (1975-08-01), Upmeier

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