Apparatus for forming accordion pleats in a thin-walled plastic

Plastic article or earthenware shaping or treating: apparatus – Press forming means – press reshaping means – or vulcanizing... – Means corrugating a preform

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Details

264339, 4253871, 425396, 425397, 425400, B29C 5322

Patent

active

047011203

ABSTRACT:
Apparatus for forming accordion pleats in and about the sidewall of a thin-walled plastic container. Said apparatus comprising a forming station, a gripping and transporting means for introducing unpleated containers to the forming station and for removing the same from the forming station. Hot air means renders the containers malleable at the forming station. A plurality of circumaxially arranged forming plates move radially inwardly to engage the container sidewall and to form accordion pleats therein. Thereafter the plates are retracted radially for the introduction of the next succeeding container. A ring cam is intermittently rotated to operate the forming plates with the forming "dwell" regulated by a small cam.

REFERENCES:
patent: 1281462 (1918-10-01), Wills
patent: 1794435 (1931-03-01), Barth
patent: 2068031 (1937-01-01), Mattinson
patent: 2265111 (1941-12-01), Brown
patent: 3012604 (1961-12-01), Zieg
patent: 4038011 (1977-07-01), Lemelson
patent: 4153665 (1979-05-01), Vecchiotti et al.
patent: 4170622 (1979-10-01), Uhlig
patent: 4594162 (1986-06-01), Berger

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