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US 4,044,716 AGranted
Vacuum slot coating apparatus
AssigneeMilliken Research Corporation
InventorDennis L. Riddle
Life of this patent
Estimating the term…
Abstract
This invention relates to an apparatus to apply a coating to a fabric which employs vacuum pressure to enhance the penetration of the coating into the fabric. The vacuum pressure source has a continuously moving surface to prevent build-up of the coating material at the outlet of the vacuum source.
Claims3
In a apparatus to provide a coated fabric having means to coat a fabric, suction conduit means having an elongated opening thereon to apply suction pressure to the fabric to impregnate the coating into the fabric and means to cure the coated fabric the movement comprising:
- guide means mounted inside said conduit means to guide a web material across one side of said elongated opening into said suction conduit means and out across the other side of said elongated opening to clean the surface of said opening, said opening being lined with a friction resistant material.
Dependencies are inferred from the claim text.