49318 ⎘
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles; Joining articles or parts of a single article; Injecting material between coaxial articles, e.g. between a core and an outside sleeve for making a roll making rolls