Compression moulding apparatuses and methods

摘要

An apparatus includes a first mold part suitable for receiving an object, a die arrangement arranged for surrounding a zone of the object and a second mold part cooperating with the die arrangement and with the first mold part in order to compression-mold plastics on the object in the zone.

主权项

1. A molding method, comprising the steps of
(a) delivering an object to a first mold portion, wherein said object comprises a container portion provided with a dispensing element and said container portion comprises a dome including a connecting region for connection with a container body and from which said dispensing element extends, said object including a concave portion and being delivered to said first mold portion with its concave portion facing downwardly; (b) placing a dose of plastics material on said object which has been delivered to said first mold portion, said dose placing step including removing said dose from a continuous flow of plastics material in a pasty state dispensed from an extruder and transferring said dose on said object while in the pasty state; (c) moving said first mold portion bearing said object and a second mold portion toward each other, said dose adhering to said object; (d) at least partially surrounding said object with a die so that said second mold portion and said die define a cavity around said object; and (e) compression-molding said dose around said object in said cavity to form said dose into a container neck element on said dispensing element, said container neck element including a threaded portion.