| 摘要 |
<p>One piece shaped plastics panels are produced in a two part mould one part of which defines the outside of the panel and the other part the inside, and the parting line of the two parts extends away from the edges of the mould cavity initially as flat surfaces substantially at right angles to an angles to an edge of the panel, and finally as surface sloping towards the exterior of the tool. Particularly moulding plastics guard panels for machine parts. Closing and assembling construction is completely tight and able to absorb the outward forces occurring during moulding, and the tool can be smaller and used in smaller injection machines, therefore the moulding appts. inexpensive and the price of the panels low.</p> |
