Mandrel for forming a bottom in a packaging container

Details Mandrel for forming a bottom in a packaging container Mandrel for forming a bottom in a packaging container

1988-12-21

1989-08-29

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

Tool or tool support

Adapted to be heated or cooled

493183, 493184, 493471, B31B 128

Patent

active

048613282

ABSTRACT:
A mandrel used in a packaging machine being in a tubular shape and provided with a cooling chamber at one end so as to cool a plain plate which is positioned at the top of the mandrel and contacts the heated, infolded and compressed bottom of a tubular package carton blank. Four projections are formed on the outer surface of the mandrel so as to contact each corner of the tubular package carton blank to leave it open. A pair of water cooling pipes are provided in the tubular mandrel with a space left between the internal wall of the tubular mandrel and connected to the cooling chamber so that only the bottom of the heat-sealed container made of a tubular package carton blank with thermoplastic coatings thereon is cooled and the side walls of the container are free from moisture condensation.

REFERENCES:
patent: 3196760 (1965-07-01), Terrg
patent: 3207049 (1965-09-01), Monroe et al.
patent: 3303761 (1967-02-01), Monroe et al.
patent: 3405505 (1968-10-01), Mistarz
patent: 3408906 (1968-11-01), Heffelfinger et al.

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