| 摘要 |
A vacuum press of the kind comprising an open topped chamber (7) in which a substrate article (9) may be placed, sealing means to engage a peripheral margin of a thermoplastics lamina (11) so that the lamina extends across the chamber as a sealed closure for the open top thereof, heating means (14) above the lamina to heat and soften the lamina, and vacuum inducing means (15, 18, 19) to evacuate a space below the lamina between it and the substrate article and thereby cause or allow the heated lamina to be pressed into conformation with the substrate article, is characterised in that the chamber is provided with a lid (8) able to seal with a peripheral margin of the lamina, in that the lid is adapted to withstand evacuation of a space above the lamina between it and the lid, in that the vacuum inducing means may operate to withdraw air from the space above and the space below the lamina, and in that vent means (20) are provided to break the vacuum in the space above the lamina when it is to be pressed into conformity with the substrate article. A method is also claimed. |
