Apparatus for gauge distribution in a tubular plastic film

Details Apparatus for gauge distribution in a tubular plastic film Apparatus for gauge distribution in a tubular plastic film

1995-05-05

1996-12-31

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

Continuous filament forming or film casting means with...

425327, B29C 5320

Patent

active

055892019

ABSTRACT:
Apparatus for effecting gauge distribution in flattened tubular plastic film has a collapsing device for collapsing upwardly vertically moving expanded tubular plastic film to a two layer flattened condition, a first motor for rotating the collapsing device through 180.degree. in each direction from a neutral position, a first horizontal film direction reverser secured to the collapsing device for rotation therewith a first horizontal turning bar located above the collapsing device and extending substantially through the central axis, a second horizontal film direction reverser, and a second horizontal turning bar located about the first turning bar. A second motor arrangement simultaneously rotates the first turning bar through 135.degree. in each direction from a neutral position, the second film direction reverser through 90.degree. in each direction from the neutral position and the second turning bar through 45.degree. in each direction from the neutral position simultaneously with the 180.degree. rotation of the collapsing device and first direction reverser by the first motor, and thereby distributes gauge variations in the two layer flattened film leaving the collapsing device across the width of the flattened film.

REFERENCES:
patent: 2844846 (1958-07-01), Kronholm
patent: 3804572 (1974-04-01), Upmeier
patent: 4643656 (1987-02-01), Karl
patent: 4650406 (1987-03-01), Peters
patent: 4676728 (1987-06-01), Planeta
patent: 4836744 (1989-06-01), Karl et al.
patent: 5437544 (1995-08-01), Achelpohl

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