Plastic article or earthenware shaping or treating: apparatus – Preform severing means – Cutter guided by or cooperating with peripheral edge of...
Patent
1987-03-09
1988-07-05
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Preform severing means
Cutter guided by or cooperating with peripheral edge of...
83225, 264160, 264163, 425298, 425306, 425398, B29C 5132
Patent
active
047551291
ABSTRACT:
An arrangement for the thermoforming of molded plastic articles from a continuous web of a thermoplastic material, and more particularly, a trim in place thermoforming arrangement in which the plastic articles are simultaneously molded and at least substantially or completely separated from the remaining thermoplastic web material. A high degree of alignment and precision is obtained between cooperating cutting blades employed in the trimming of the thermoformed articles, because of a unique self-aligning or floating support structure of at least one of the cutting blades operating in conjunction with the thermoforming apparatus. The self-aligning action provided for between the slidingly contacting cutting blades allows for an automatic compensation for any temperature changes and blade wear encountered during operation, and with only one movable part being required for the trim in place device.
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Baker Philip S.
De May Roland
Goulette Stephen L.
Gross Jonathan
Chiesa Richard L.
Gilman Michael G.
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
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