Control of tubular film size

Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Control means responsive to product weight or dimension

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Details

264 402, 264564, 425 72R, 425163, 425172, 4253261, B29D 2304

Patent

active

044026560

ABSTRACT:
An internally-cooled blown-film system, for producing plastic tubing, in which the flow rate of the continuous flow of internal cooling air, by non-contacting, energy beam sensor means, is made directly dependent upon the deviation in position of the tube wall.

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