Process for injection moulding multilayered articles
AssigneeStamicarbon B.V.
InventorsJozef J. F. M. Kersemakers, Henricus E. H. Meijer, Gerardus Martens
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Abstract
The invention relates to a process for injection molding articles having a number of layers of different plastic materials that are sequentially and/or coaxially injected, in plasticized form, into a mould. Prior to injection, the different plastic materials are brought into a hollow chamber in a preselected order and amounts, with the aid of separate injection units or by means of a distributor, which is made of elementary modules, each of which is capable of creating a certain combination and configuration of plastic materials in the chamber. The contents of the chamber are then injected into the mould.
Claims4
An injection molding process for producing a multilayered article comprising the steps of:
- (a) sequentially or coaxially filling a single hollow chamber with a combination of mouldable material from a plurality of plasticising units through a distributor comprising a number of movable disc shaped elements provided with radially extending borings, and
- (b) subsequently injecting said combination of mouldable material from said chamber through a boring in said distributor and into a mold.
A process for injection moulding an object consisting of a number of layers of different materials, comprising the steps of:
- (a) sequentially or coaxially injecting a plasticized material from separate injection units into a distributor, wherein said distributor is capable of creating a certain combination and configuration of materials and
- (b) axially injecting the combination and configuration of materials through a hollow chamber which is positioned between a feed channel and said distributor in a desired order and amounts into a mould.
Dependencies are inferred from the claim text.