Withdrawal device for a blown tubular film

Details Withdrawal device for a blown tubular film Withdrawal device for a blown tubular film

1995-11-07

1997-10-07

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

2642093, 264564, 4253261, 425377, 4253871, 425392, 4254031, B29C 5320

Patent

active

056745400

ABSTRACT:
A withdrawal device for a plastic tubular film is manufactured in a blowing method by an extruder. To prevent the formation of center wrinkles in the withdrawal of plastic tubular film, at least one deflection cylinder and/or angle bar has a differing diameter across its length.

REFERENCES:
patent: 2844846 (1958-07-01), Kronholm
patent: 3804571 (1974-04-01), Upmeier
patent: 4246212 (1981-01-01), Upmeier et al.
patent: 4634358 (1987-01-01), Dellbrugge
patent: 4643656 (1987-02-01), Karl
patent: 4676728 (1987-06-01), Planeta
patent: 5013234 (1991-05-01), Reinhold
patent: 5106281 (1992-04-01), Achelpohl
patent: 5437544 (1995-08-01), Achelpohl
patent: 5529470 (1996-06-01), Kahlen

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