US 12,064,788 B2
Method of manufacturing a contamination control sheet
Mark Dalziel, Bristol (GB)
Assigned to DYCEM LIMITED, Bristol (GB)
Appl. No. 17/594,674
Filed by DYCEM LIMITED, Bristol (GB)
PCT Filed May 20, 2019, PCT No. PCT/GB2019/051387
§ 371(c)(1), (2) Date Oct. 26, 2021,
PCT Pub. No. WO2020/234552, PCT Pub. Date Nov. 26, 2020.
Prior Publication US 2022/0212228 A1, Jul. 7, 2022
Int. Cl. B05D 3/12 (2006.01); B05D 3/00 (2006.01); B05D 3/02 (2006.01); B05D 7/04 (2006.01)
CPC B05D 3/12 (2013.01) [B05D 3/007 (2013.01); B05D 3/0254 (2013.01); B05D 7/04 (2013.01)] 14 Claims
OG exemplary drawing
 
1. 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 microns Ra, and
wherein the cooling roller is sized to give the coated support material no less than 2 minutes of contact time on the cooling roller.