Apparatus for PTP pocket formation

Details Apparatus for PTP pocket formation Apparatus for PTP pocket formation

1988-06-20

1990-03-20

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

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

Including both heating and cooling means

264322, 264522, 425398, 425407, 425416, 425423, B29C 5120

Patent

active

049097229

ABSTRACT:
A present invention is directed to an apparatus for PTP Pocket forming on a sheet which requires delicate care for handling. Combination of local and discriminate preparative heating of the pocket-regions of freshly unrolled sheets while leaving the rest of the sheet in a cooled state in a lattice structure, preliminarily expanding said regions up to about 70% of the volume of the recesses of the female die by pressing heated plugs to the region and supplying compressed-air to the expanded region. Details of the temperature control on various steps parts of the apparatus as well as a means for attaining virtually complete thermal equilibrium over the preparative heating station are also disclosed.

REFERENCES:
patent: 1942251 (1934-01-01), Mains
patent: 2521847 (1950-09-01), Harr
patent: 3256564 (1966-06-01), Welshon
patent: 3570064 (1971-03-01), De Groot
patent: 3642411 (1972-02-01), Desnick et al.
patent: 4048781 (1977-09-01), Johansen
patent: 4666394 (1987-05-01), Wakamiya et al.
Publication entitled "Blister-Pack, FBP-M2" by CKD Corporation, May, 1985.

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