US 4,565,052 AGranted

Process and installation for packaging a product

AssigneeSociete a Responsabilite Limitee dite

InventorJean-Claude Hautemont

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Abstract

The invention relates to a process for packaging a product, particularly a liquid or pasty product, comprising thermoforming, filling, sealing and cutting out recipients of thermoplastics material, in which the path of advance of the recipients in the forming and sealing stations is cleared by lowering the mobile part of the moulding unit and that of the lower sealing support; a lower cutting tool is used in the cut-out station, comprising a fixed longitudinal part and a mobile transverse part which is lowered to clear the path of advance the recipients; sections of supporting and guiding rail are used both in the sealing and cut-out stations and at the outlet of the cut-out station. In the sealing station, the corresponding sections of rail are used as fixed parts of sealing support, and, in the cut-out station, the corresponding sections of rail are used for longitudinally cutting out the recipients and for supporting and longitudinally guiding the latter.

Claims13

Dependent claims

A process for packaging a product comprising the steps of:

longitudinally advancing a thermoplastic base web downstream, step by step, through a plurality of work stations;
heating successive zones of the base web to soften the base web;
forming a row of receptacles in each successive zone of the base web in a forming station having a mobile transverse part;
filling a row of receptacles with a product through openings in the receptacles;
covering the openings of filled receptacles with a covering web;
sealing the covering web to the base web in a sealing station including a lower sealing support having a mobile transverse part;
cutting out the filled and sealed receptacles from the base and covering webs in a cutting station including a lower cutting tool having a mobile transverse part;
supporting the receptacles and corresponding zones of the base web between the different work stations by support and guide rails extending parallel to the direction of advance of the base web and the receptacles;
lowering the mobile parts of the forming station, the sealing station, and the cutting station to clear the path of advance of the receptacles;
using sections of the support and guide rails in the sealing station as fixed parts of the lower sealing support;
and
using other sections of the support and guide rails in the cutting station as fixed parts of the lower cutting tool, and to support the cut-out receptacles.

9 more elements

Dependencies are inferred from the claim text.