| abstract |
FIELD: construction. n SUBSTANCE: method to produce multi-layer foam plastic includes the following stages: preparation of at least two layers of composition capable of foaming, which contain a foaming agent, foaming of composition layers, connection of composition layers by means of welding, cooling of the produced multi-layer product. Besides, the initial composition is acrylimide polymer, besides, layers are connected simultaneously with foaming with the help of diffusion welding. n EFFECT: production of multi-layer foam plastic without density change, reduced hygroscopicity, simplified technological process, production of foamed material with increased strength characteristics. n 9 cl, 1 tbl, 6 ex |