Replaceable wiping insert for slot die head

Details Replaceable wiping insert for slot die head Replaceable wiping insert for slot die head

1990-05-23

1991-11-26

Hoag, Willard E.

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

118419, 425461, B05C 318

Patent

active

050674323

ABSTRACT:
A slot die head for emitting a coating fluid onto a moving web has a slot orifice, the exit end of which is defined by replaceable inserts, the downstream one of which, relative to the direction of web movement, has a wiping flange cantilevered from a hinge portion thereof. The flange is disposed in use in facing relationship with the web and extends downstream from the slot orifice, so as to be resiliently hingedly movable in directions substantially normal to the web surface for maintaining constant shear levels across the coated area.

REFERENCES:
patent: 3813204 (1974-05-01), Gregory
patent: 4023971 (1977-05-01), Vested
patent: 4076864 (1978-02-01), Wallsten
patent: 4143187 (1979-03-01), Pilgrim et al.
patent: 4246335 (1981-01-01), Keogh et al.
patent: 4643127 (1987-02-01), Wanke
patent: 4679524 (1987-07-01), Eklund
patent: 4728539 (1988-03-01), Gane
patent: 4943451 (1990-07-01), Zimmer

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