Apparatus and method for film packaging

Package making – Methods – Skin packaging

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Details

53509, 264553, 271195, 425388, B65B 1152, B65B 6128

Patent

active

044185111

ABSTRACT:
A film packaging machine 20 has a vacuum platen 28 with a slidable air-permeable discharge plate 72 that is driven by air cylinders 112, 114 within the platen to eject a finished package by moving a leading edge of the package off the platen and into pinch rolls 62. A small plenum 96 beneath the platen surface at the discharge end, extending across the width of the platen, is supplied with air under pressure to relieve the vacuum beneath the leading portion of the package to facilitate ejection.

REFERENCES:
patent: 868317 (1907-10-01), Allen
patent: 2976658 (1961-03-01), Kostur
patent: 2984364 (1961-05-01), Lamb
patent: 3052339 (1962-09-01), Carter
patent: 3377770 (1968-04-01), Rorer
patent: 3387426 (1968-06-01), Kraut et al.
patent: 3501886 (1970-03-01), Watts et al.
patent: 3512335 (1970-05-01), Rorer
patent: 3553931 (1971-01-01), Rorer
patent: 3583129 (1971-06-01), Rorer
patent: 3945172 (1976-03-01), Johnson
patent: 4114758 (1978-09-01), Coleman
patent: 4188770 (1980-02-01), Tabur
U.S. Packaging Corp. Drawing No. AC-039-0843, Rev. A, 9/8/78.
Blueprint CT-3036, "Vacuum Box Discharge Pusher".

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