Film coater and smoothing method and apparatus

Details Film coater and smoothing method and apparatus Film coater and smoothing method and apparatus

2005-03-22

2005-03-22

Bareford, Katherine (Department: 1762)

Coating processes

Application to opposite sides of sheet, web, or strip

Roller applicator utilized

C427S335000, C427S336000, C427S356000, C427S359000, C427S361000, C427S428010, C118S123000, C118S126000

Reexamination Certificate

active

06869639

ABSTRACT:
An improved film coater which utilizes one or more coater or applicators to transfer coating to the outer surfaces of at least one more rolls, which in turn transfers the coating from the roll surface to one or more sides of the web for coating paper is disclosed. The coater or applicator includes a smoothing doctor on the web and downstream of the one or more rolls, and may also utilize humidity from one of steam showers or a humidity enclosure to assist smoothing. The web may run in any direction, but preferably runs upwardly from the roll toward the doctor to reduce “film split” droplets effect. The present invention also reduces the fiber rise and arrange peel pattern on the coated web, resulting in a smooth uniform coated paper.

REFERENCES:
patent: 2237068 (1941-04-01), Bradner
patent: 3152918 (1964-10-01), Kraus
patent: 5219618 (1993-06-01), Daniels
patent: 6126750 (2000-10-01), Seiz et al.

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