| 摘要 |
The procedure consists of placing the insert (1), which has a series of apertures (2), inside the cavity of an over-moulding machine. A sleeve (4) of a supple material is then placed inside the insert, so that when the over-moulding plastic (5) is injected into the cavity round a core (6) it forces the film through the apertures in the insert and against the cavity wall, which can have recesses (7) opposite some of the apertures. Both the insert and the sleeve are tubular in shape, and the sleeve can be made from a plastic which is compatible with the injected plastic to form a skin which adheres to it, or it can be non-compatible to form a non-adhering skin. The sleeve can be coloured, opaque or translucent, or have a design such as marbling. |
