Apparatus for heat forming a continuous web of plastic

Details Apparatus for heat forming a continuous web of plastic Apparatus for heat forming a continuous web of plastic

1974-11-25

1976-10-26

Baldwin, Robert D.

Plastic article or earthenware shaping or treating: apparatus

Means applying electrical or wave energy directly to work

Radiated energy

425388, 264 92, B29C 302

Patent

active

039880931

ABSTRACT:
A continuous web of heat-deformed plastic is drawn through apparatus wherein a succession of steps are performed in a repeated sequence to form blister or skin package elements. A segment of the web is clamped about a square periphery and heated to a moldable condition. A support is moved vertically to bring into contact with the softened segment either a mold surface for forming blister package segments, or articles of merchandise on supports to be skin packaged. The web clamping frame and vertically movable support are mounted on a horizontally reciprocating carriage which is moved to carry the molded segment of the web to a terminal position and bring a fresh segment into position for heating and forming. The molded segment of the web is cooled and thus assumes its final form as it is moved by the carriage, thereby reducing the overall cycle time.

REFERENCES:
patent: 3113345 (1963-12-01), Butzko
patent: 3317960 (1967-05-01), Kramer
patent: 3512335 (1970-05-01), Rorer
patent: 3562859 (1971-02-01), McIntyre
patent: 3608016 (1971-09-01), Holmstrom et al.
patent: 3619864 (1971-11-01), Birch
patent: 3814562 (1974-06-01), Diamond

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