B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 33/00 (2006.01) B32B 5/18 (2006.01) D21F 1/00 (2006.01) D21F 7/08 (2006.01)
Patent
CA 2213841
A strip material (1) comprising a support (2) includes on at least one side a plastics layer (5, 6), which is plane on the outside and which is traversed by throughflow passages. In accordance with the invention, the outside (7, 8) of the plastics layer (5, 6) includes embossments (9) provided also between the orifices of the throughflow passages which at least in part inter-communicate and communicate with the throughflow passages. In the production of the strip material, during or after the production of the plastics layer (5, 6), soluble particles are applied onto the outside (7, 8) of the plastics layer (5, 6) and are then pressed into the plastics layer (5, 6), the soluble particles being leachable by a solvent of a type in respect of which the remainder of the strip material (1) is stable whereafter these soluble particles are dissolved out.
Une bande de matériau (1) comportant un support (2) présente sur au moins un côté une couche plastique (5, 6) plane du côté externe, traversée par des canaux de passage. Selon l'invention, le côté externe (7, 8) de la couche plastique (5, 6) comporte, même entre les orifices des canaux, des incrustations (9) qui communiquent au moins partiellement les unes avec les autres et avec les canaux. Lors de la fabrication du matériau, on recouvre le côté externe (7, 8) de la couche plastique (5, 6), pendant ou après la fabrication de cette dernière, avec des particules solubles, puis on enfonce celles-ci dans la couche plastique (5, 6). Ces particules sont ensuite extraites par un solvant auquel la bande de matériau (1) est résistant.
Conrad Munzinger & Cie Ag
Smart & Biggar
LandOfFree
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