| 摘要 |
A sandwich construction comprises two preformed laminates on respective sides of a core material. The laminates are each formed from a synthetic resin and the core material is formed from an inorganic aggregate and a bonding agent, the latter being the same synthetic resin as the preformed laminates. The laminates are moulded to a desired shape and are then used as part of the formwork for moulding of the core material. A strong bond is formed between the laminates and the core material by the use of the same resin, and the method of manufature provides a saving in manufacturing time and no restriction on varying the thickness of the core material.
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