Stretching means for braking a web of plastic sheet which is pul

Details Stretching means for braking a web of plastic sheet which is pul Stretching means for braking a web of plastic sheet which is pul

1988-05-13

1989-06-27

Sipos, John

Package making

Apparatus for contraction of cover by stretching or shrinking

53587, 53588, 53389, B65B 1104

Patent

active

048417165

ABSTRACT:
The invention relates to a stretching means for braking a web of plastic sheet which is pulled off a reel. The stretching means comprises an arm (4) which is mounted to be slewable about an axis (5) extending in parallel with the axis (3) of said plastic sheet reel, a first roller (6) which is pivotally mounted on arm (4) and is intended to be made to rest against reel (2). Furthermore, the stretching means comprises a second roller (7) which is pivotally mounted on arm (4) to receive a loop of plastic sheet web (12) which is pulled off said reel (2) to cause said second roller (7) to be pulled towards said reel (2), and a drive connection (8) between said two rollers (6,7) causing the plastic sheet web to be stretched in zone (13) between the plastic sheet reel and the looped roller (7) when said web is pulled off the reel.

REFERENCES:
patent: 933439 (1909-09-01), Harrington
patent: 4281500 (1981-08-01), Mueller

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