Control of tubular film size

Details Control of tubular film size Control of tubular film size

1981-04-03

1983-09-06

Thurlow, Jeffery R.

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

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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