Coating apparatus – With stretching or tensioning – Transverse
Patent
1977-04-25
1978-09-26
Kaplan, Morris
Coating apparatus
With stretching or tensioning
Transverse
118405, B05C 312
Patent
active
041161599
ABSTRACT:
Method and apparatus for coating a moving porous web with viscous coating material, particularly for coating bias-cut, woven fabric with a tacky neoprene composition, to fill the interstices and uniformly coat the faces thereof, comprising a tenter frame for moving the fabric in a horizontal path of travel while maintaining it in dimensional stretched configuration. A pair of coating heads having opposed discharge manifolds positioned above and below the path of movement of the fabric on the tenter frame are supplied with viscous coating material which is applied to the moving fabric. The fabric is dried after each coating application and subsequently collected for use as reinforcement in the rubber cores of V-belt contructions. Each manifold of the first coating head includes a central vertical wall having edges which are in opposed relation to contact the coated fabric and force the coating material into the fabric interstices and fiber bundles of the yarns, thereby ensuring full penetration of the coating into the interior portions of the fabric. The first coating head also applies a uniform surface coating to upper and lower faces of the fabric. The manifolds of the second coating head provide a second uniform surface coating on upper and lower faces of the fabric and exceptional weight pick-up of the tacky neoprene elastomer is obtained. Depending on the characteristics of the fabric and the coating composition, the coating heads as well as the supply of coating material thereto may be adjusted to obtain desired results.
REFERENCES:
patent: 2193861 (1940-03-01), Crowley
patent: 2905522 (1959-09-01), Fahringer
patent: 3503371 (1970-03-01), Meyers et al.
patent: 3559619 (1971-02-01), Johnson
patent: 3722899 (1973-03-01), Sedwell
Kaplan Morris
M. Lowenstein & Sons, Inc.
Manning, Jr. W. M.
Wilburn, Jr. L. J.
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