Forming machines

Details Forming machines Forming machines

1981-10-23

1983-01-11

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Coacting shaping surfaces

425388, A23G 300

Patent

active

043680240

ABSTRACT:
Improvement for forming machine by preventing the softened thermoplastic material sheet from dangling and unevenly stretching between a pair of clamp chains, which are extended on a plurality of sprocket wheels to be intermittently driven so that the upper run thereof may receive and keep the sheet stationary in the waiting zone of the machine when the male and female die boxes are contacted for molding and then feeding the sheet between the separated die boxes. The improvement comprises a plurality of longitudinally elongated supporter means such as endless strings or a series of small discs arranged longitudinally close with each other in said waiting zone, and a plurality of bores formed in the lower die box for blowing air in the molding zone.

REFERENCES:
patent: 3561057 (1971-02-01), Butzko
patent: 3632273 (1972-01-01), Savickos
patent: 3647335 (1972-03-01), Brown
patent: 3867088 (1975-02-01), Brown et al.
patent: 3914103 (1975-10-01), Dean et al.
patent: 4043736 (1977-08-01), Andres et al.

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