Abstract: The invention is based on an injection unit for the processing of fusible materials, for example thermoplastics, ceramic or metallic compositions or the like, in which at least two melt streams are fed via a channel system to one or more mould cavities in a sequence which changes with time. In accordance with the invention, only one rotating valve element is provided for each channel system which leads to the mould cavity (cavities) and consists of at least two feed channels (6; 7). The valve element consists of a hollow spindle (11), which is connected to the pressure channel (20) of the melt and has, in the plane of the feed channels (6; 7) leading to the mould cavity (cavities), at least one distribution channel (21) which runs radially outwards and is likewise connected to the pressure channel (20).

Abstract: The invention relates to a method and an installation for processing thermoplastic synthetic materials. According to the invention, the melt strands or the like are displaced in oscillation or pulsation in order to indent or penetrate the joint lines between at least two injection strands.

Abstract: The invention relates to a method and an installation for processing thermoplastic synthetic materials. According to the invention, the melt strands or the like are displaced in oscillation or pulsation in order to indent or penetrate the joint lines between at least two injection strands.