| 摘要 |
METHOD OF COATING LIQUID PENETRABLE ARTICLES WITH POLYMERIC DISPERSIONS A liquid penetrable material such as a compactible gasket material is coated with a liquid dispersion of polymer or polymers, by first preheating the liquid penetrable material to a temperature sufficient to prevent any substantial penetration of liquid into the material when the material at the preheated temperature is coated with the liquid dispersion of polymer or polymers. The preheated material is then coated with the liquid dispersion of polymer or polymers in an amount sufficient to form a fluid-impermeable barrier over the material and the coated material is supported on a plurality of pointed projections through a drying section until the coating is in a tack-free condition. After drying the material to a tack-free condition, it is supported on a conveyor through a curing station to cure the coating. Thereafter the material is delivered by suitable conveyors to an inspection and packaging station, but may be passed en route through another coating station, this time to receive a suitable release coating. |
