Abstract: The present invention related to a method of manufacturing of a contamination control sheet, the method comprising the steps of: passing a web of support material from a supply roller to a coating station, and applying a coating of polymeric material to one surface of the support material; passing the coated support material through an oven to cure the polymeric material; and passing the coated support material around a cooling roller to a take up roller; characterised in that a nip roller is provided adjacent to the cooling roller so that the coated surface of the support material is pressed onto the cooling roller by the nip roller, and further characterised in that the cooling roller has a surface roughness of 0.2 to 1 Ra.

Abstract: A contamination control mat 10 comprising a support layer 16 which is coated on a top surface with a polymeric contamination control layer 17, wherein the support layer 16 comprises a glass fiber reinforced polymer that is printed on a top surface, the polymeric contamination control layer 17 is transparent or translucent, and the printed surface is visible through the polymeric contamination control layer. This provides a thin yet rigid and stable mat 10 that can also display printed information that is protected from damage. The mat 10 is primarily used to meet contamination control needs.

Abstract: A composition comprising 99.5 to 75% by weight of highly plasticized polyvinylchloride (PVC) which consists of 15 to 45% by weight of polyvinylchloride (as herein defined) and 55 to 85% by weight of a plasticizer, and from 0.5 to 25% by weight of carbon fibers.

Abstract: A composite material comprising a layer of highly-plasticised polyvinylchloride, comprising 15 to 45% of polyvinylchloride and 55 to 85% by weight of a plasticiser, a fibrous backing, and an intermediate layer of a polymeric material between the polyvinylchloride layer and the backing, which material at least reduces the migration of plasticiser from the highly-plasticised polyvinylchloride layer to or through the backing.This material can be bonded using an adhesive to the walls, floor, and/or ceiling of a room which is to be kept free of dust and/or bacteria, e.g. an operating theatre or computer room. The dust and/or bacteria adhere to the exposed surface of the highly plasticised PVC layer, from which they can be removed by washing. The highly plasticised PVC layer also has valuable anti-slip properties.