| 摘要 |
A laminate item is made by providing polymer composite layers 2 and a perforated 6, resistive heater sheet layer 4, applying an electric current to the sheet 4, so as to generate heat, and thereby heat the material, so as to render the polymer layers 2 into a formable condition. The heater sheet 4 may be applied in a lay-up, or comprise electrically resistive components embedded within a polymer matrix bag 10 or sandwiched between polymer layers 2. The bag 10 is preferably a flexible film, applied (directly or indirectly) against a material to be formed. The polymer layers 2 may be resin impregnated fibre materials, containing carbon, composite, aramid, basalt or glass fibres. The formed items may be wind turbine blades, saddle trees or something in the field of orthotics. Below the forming temperature, the item may be involved in dicing. |
