Method and apparatus for pattern impregnation of a porous web

Details Method and apparatus for pattern impregnation of a porous web Method and apparatus for pattern impregnation of a porous web

1989-01-17

1990-11-06

Lawrence, Evan

Coating processes

Nonuniform coating

Mask or stencil utilized

427288, 427296, 427350, 118 50, 118406, 118410, 118415, B05D 500, B05D 132, B05D 312, B05C 320

Patent

active

049685341

ABSTRACT:
A method and apparatus for impregnating a porous web with a chemical. The impregnating method includes applying a vacuum to one side of the web sufficient to evacuate air from the web, applying impregnating chemical into the web in a selected pattern on the same side of the web, followed by drying the web. The apparatus includes a vacuum chamber for evacuating air from the web, a manifold for applying the impregnating chemical into the web located on the same side of the web as the vacuum chamber and a stencil for restricting the application of the chemical to selected areas of the web.

REFERENCES:
patent: 3084661 (1963-04-01), Roberts
patent: 3470848 (1969-10-01), Dreher

Affiliated with

Also associated with

Rating

Method and apparatus for pattern impregnation of a porous web does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for pattern impregnation of a porous web, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for pattern impregnation of a porous web will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1306146