| 摘要 |
<p>PURPOSE:To make it possible to form heat-resistant structural material by one shot by a method wherein specified reactive hot-melt adhesive is employed as the adhesive used between respective layers in lightweight interior trim structural material, which is prepared by laminating respectively a plurality of glass mat layers and of skin material layers on both sides of core material layer in the order named. CONSTITUTION:In order to manufacture the lightweight interior trim structural material concerned, firstly, core material layer 1 made of thermoplastic polyurethane foamed sheet, which is obtained by reacting polyol component and isocyanate component with the each other in the presence of water and/or organic foaming agent, is brought into contact with water and/or water vapor. Next, a plurality of glass mat layers 2 and 2 and of skin material layers 3 and 4 are laminated to both the sides of core material layer 1 in the order named, the resultant laminate is formed under heat and pressure. In this case, as the adhesive employed between the respective layers 1-4, reactive hot melt adhesive containing polyurethane polymer having unreacted NCO group at its terminal is employed. Finally, all the laminate is integrally formed by being pressurized simultaneously.</p> |
