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1. (WO2018028820) METHOD FOR PRODUCING A CLOSURE IN A CONTAINER MADE OF PLASTIC

Pub. No.:    WO/2018/028820    International Application No.:    PCT/EP2017/000929
Publication Date: Fri Feb 16 00:59:59 CET 2018 International Filing Date: Tue Aug 01 01:59:59 CEST 2017
IPC: B29C 65/10
B29C 65/00
A61J 1/14
B65D 41/02
B65D 53/04
B29C 49/42
B29L 31/00
Applicants: KOCHER-PLASTIK MASCHINENBAU GMBH
Inventors: GESER, Johannes
SPALLEK, Michael
SPRENG, Philipp
Title: METHOD FOR PRODUCING A CLOSURE IN A CONTAINER MADE OF PLASTIC
Abstract:
The invention relates to a method for producing a closure in a container made of plastic in a blow moulding method, wherein a joining process is carried out in order to form an inseparable connection between a region (8) of the container wall (6) - provided for a removal process and preferably forming an insertion site - and a sealing material (28) made of a joinable plastic, such as a thermoplastic elastomer, wherein the joining partners (28, 6) are heated to a joining temperature that is significantly below the welding temperature thereof and are pressed against one another with slowly increasing pressure in order to integrally join same, characterised in that the joining process is carried out between the sealing material (28) and a flexible membrane (8) of the container wall (6) forming the removal region in such a way that the joining partners (28, 8) are slowly heated in an autoclaving process, and that a joining contact pressure pressing together the joining partners (28, 8) is generated by the internal pressure of the container acting on the membrane (8) during the autoclaving process, and this simultaneously brings about a bacterial count reduction in the space (34) between the closure cap (12) and the end wall (6).