| 摘要 |
<p>A process for forming plastic into a predetermined shape from a plastic particulate, a heat-activated expandable foam plastic filler, and first and second outer skin, comprises: (i) providing first and second complementary mould parts (lower, upper); (ii) heating the first and second mould parts at least on their faces to a temperature of 100-500 degrees centigrade to make the plastic particulate material and the outer skin materials molten or sinterable; (iii) contacting the first and second mould parts with outer skin materials; (iv) contacting at least one of the outer skin materials with plastic particulate (lower inner skin); (v) contacting the heat-activated expandable foam plastic filler (core) to the plastic particulate or an outer skin; (vi) melting or sintering at least a portion of the outer skin and the plastic particulate on each mould part into a moulded skin; (vii) bringing together the complementary face portions of the heated first and second mould parts to form a composite sandwich. Fibres may be incorporated into or between the layers and may comprise a mat. The outer skin layers may comprise particulate material. The method may be used to produce automotive components and modular housing panels.</p> |
