| 摘要 |
Formed bodies are obtained by thermoforming corrugated cardboard containing at least 30% by weight of thermoplastic fibrils of high specific surface area, the forming operations consisting in: (a) heating of the cardboard at temperatures equal to or greater than the melt temperature of the fibrils; (b) introducing the cardboard thus heated into a press or forming mold, and (c) allowing the cardboard thus heated to cool down in said press or mold at a temperature below the melt temperature of the fibrils. (c) cooling of the cardboard to a temperature below that of the fibril-forming polymer. 2) Process according to claim 1, characterized in that heating operation (a) is carried out at a temperature greater by 25 DEG C than the melt temperature of the fibril-forming polymer. 3) Process according to claims 1 and 2, characterized in that the fibril-forming polymer is an olefinic polymer. 4) Manufactured products based on corrugated cardboard obtained through the process according to claims from 1 to 3. |
