Laminated cover material - for floor covering, tennis courts etc
Реферат: Composite layer for covering flat or shaped surfaces consists of (I) an external or upper layer of a natural and/or synthetic rubber and (II) a cobonded supporting or base layer consisting of a bitumen and/or tar mixt. a polyalkene pref. atactic polypropylene and/or an elastomer and opt. a filler consisting of a granular synthetic or org. material. The layer (I) possesses a geometrical shape by means of which layer (II) is retained mechanically. An additional layer is placed between layers (I) and (II) by spraying. Layer (I) consists of PVC with a thickness of 0.1-10mm and layer (II) consists of a mixt. of bitumen and atactic polypropylene with a thickness of 1-20mm. Layer (I) may also consist of a polyurethane. Used as floor covering e.g. for tennis courts and athletic tracks, and for covering underground pipelines. The layer has a low cost, is easily applied and maintains its original properties for long periods.
Process for manufacturing elastic floor covering boards
Номер патента: CA939251A. Автор: Gunther Wellensiek. Владелец: Verton and Wellensiek. Дата публикации: 1974-01-01.