Plastic article or earthenware shaping or treating: apparatus – Diverse distinct type shaping means – Shaping orifice and either a downstream preform reshaping...
Patent
1974-11-14
1976-01-06
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Diverse distinct type shaping means
Shaping orifice and either a downstream preform reshaping...
425 72, 425445, B29D 722
Patent
active
039307816
ABSTRACT:
Apparatus for air-cooling blown tubular thermoplastic film downstream of a position where the film has already solidified comprises a ring having air outlets directed onto the tubular film, the ring comprising a plurality of blow pipes which are pivotally interconnected in pairs at adjacent ends and hinged at their other ends to holding elements which are radially adjustable with respect to the tubular film. The hinge axes at the holding elements are disposed so that the blow pipes form a uniform polygon and the lengths of the individual pipes is such that, when the holding elements are at their radially outermost adjustment, the pipes extend in an obtuse angled zig-zag line circumferentially of the tubular film.
REFERENCES:
patent: 3355770 (1967-12-01), Augustin
patent: 3596321 (1971-08-01), Upmeier
patent: 3726743 (1973-04-01), Reifenhauser et al.
patent: 3749540 (1973-07-01), Upmeier
patent: 3775523 (1973-11-01), Haley
patent: 3804571 (1974-04-01), Upmeier
patent: 3804572 (1974-04-01), Upmeier
patent: 3867083 (1975-02-01), Herrington
Flint, Jr. J. Howard
Windmoller & Holscher
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