| 摘要 |
948,959. Laminates. SAMMON RULLA OY. Nov. 17, 1961 [Nov. 19, 1960], No. 41256/61. Drawings to Specification. Heading B5N. [Also in Division D2] Porous fibre board which is compressed for a short period of time between pressing rollers to reduce the adhesion of the individual fibres therein may have a layer of material such as paper, cloth or metal applied to one or both sides as it passes through the rollers. To this end glue is previously applied to the board and at least one of the rollers is heated. |
