| 摘要 |
Baffle precursors are provided which comprise a sandwich of cellular plates (1,2) with a foamable material (13) therebetween these precursors overcome the problem of the flow of the foamable material as it is heated up to cause foaming which can result in non-homogeneous foam. The baffle precursors (1,2,13) also enable uniform baffle properties to be established on both sides of the baffle and provide improved performance for a reduction in the amount of foamable material required. The hinged (5,6) cellular plate is also an aspect of the invention. <IMAGE> <IMAGE> <IMAGE> |
