Package making – With means responsive to a sensed condition
Patent
1977-06-03
1979-01-09
McGehee, Travis S.
Package making
With means responsive to a sensed condition
53141, 53511, B65B 3102, B65B 1152
Patent
active
041331630
ABSTRACT:
A skin packaging machine for the continuous production of air-free skin packages comprising a suction box, a perforated conveyor for traversing over the suction box an imperforate lower web of thermoplastic material carrying spaced articles to be packaged, means for feeding a heated imperforate upper web of thermoplastic material towards the lower web and guiding its edges into contact with the upper surface of the lower web as the latter travels over the suction box and a thermoforming unit, disposed between a supply reel for the lower web and the conveyor, which is operative to impose a dimpled upper surface on the lower web, said thermoforming unit being constituted by a heated drum and an adjoining thermoforming drum around both of which the lower web is passed, and the thermoforming drum having an air-permeable and dimpled peripheral surface and including means for applying suction to the interior thereof.
REFERENCES:
patent: 3072961 (1963-01-01), Gilbert
patent: 3314110 (1967-04-01), Missbach
patent: 3897675 (1975-08-01), Wilson
patent: 3910008 (1975-10-01), Johnson
Baker Perkins Holdings Limited
McGehee Travis S.
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