D - Textiles – Paper – 06 – N
Patent
D - Textiles, Paper
06
N
204/91.4
D06N 3/08 (2006.01) B05D 3/10 (2006.01)
Patent
CA 1101795
WGT:SLW 12-21-77 5827 METHOD FOR MANUFACTURING AN EMBOSSES VINYL SURFACE COVER ING HAVING A CLEAR PHOTOPOLYMERIZED COATING ABSTRACT OF THE DISCLOSURE An improved method for manufacturing an embossed thermoplastic surface covering having a clear, durable, tough, mar-resistant photo- polymerized wear layer is described. One conventional method for forming such a surface covering involves passing an embossed substrate beneath a curtain coater containing a 100% reactive photopolymerizable coating to apply about 2 to 5 mils of coating and then curing the coated substrate by passing it beneath a source of ultraviolet radiation. A disadvantage in this method resides in the fact that, in those areas deeply embossed, the coating being applied by the curtain coater, which is highly viscous, traps air bubbles beneath the surface of the coating adjacent the leading edges of the valleys which first pass beneath the curtain coater. We have overcome this difficulty by prewetting the valleys of the em- bossed substrate with a liquid consisting essentially of an acrylate or mixtures of acrylates together with sufficient photoinitiator to initiate polymerization when the coated substrate is subjected to ultraviolet radiation.
312443
Bagley George E.
Byers Robert H.
Armstrong World Industries Inc.
Gowling Lafleur Henderson Llp
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