| 摘要 |
Multiple colour injection moulding with axial component feed. G1-. With phased feed of the components through separate feed passages to the injection nozzle with a non-return valve in the first passage and a second passage to introduce the second component, with final simultaneous injection of the components into a mould. The non-return valve is located in a longitudinally bored torpedo element located in the main cylinder of the injection machine and consists of an interchangeable longitudinally bored sliding bolt element, one end of which forms a valve face, the other end protrudes into the conically formed hollow injection head, the configuration being such that a reservoir is formed between the nozzle head and the head of the sliding bolt check valve.
|
