Method and apparatus for impregnating a fibrous web

Details Method and apparatus for impregnating a fibrous web Method and apparatus for impregnating a fibrous web

1979-10-22

1981-09-08

Lusignan, Michael R.

Coating processes

Vacuum utilized prior to or during coating

118 50, 427373, 4273898, C23C 1308, B05D 300, B05D 302

Patent

active

042884756

ABSTRACT:
A method and apparatus for impregnating a fibrous web is disclosed having a conveyor for advancing the fibrous web. The fibrous web having a first surface and a second surface. An applicator is provided for applying a foamed binder to the first surface of the fibrous web and the foamed binder seals the first surface of the web. A vacuum chamber is positioned adjacent the second surface of the web. The vacuum chamber contains a narrow slot adjacent the second surface of the web for applying a vacuum to the web. The vacuum acts upon the web to reduce the thickness of the web and to draw the foamed binder material into the web to impregnate the web.

REFERENCES:
patent: 3042573 (1962-07-01), Roberts
patent: 3084661 (1963-04-01), Roberts
patent: 3234041 (1966-02-01), Rosecrans
patent: 3348989 (1967-10-01), Roberts
patent: 3473511 (1969-10-01), Metz et al.
patent: 3480499 (1969-11-01), Paul
patent: 3533834 (1970-10-01), Marzocchi
patent: 3653174 (1972-04-01), Violleau et al.
patent: 3680528 (1972-08-01), Sanders
patent: 3793138 (1974-02-01), Rohrer
patent: 3857657 (1974-12-01), Teed
patent: 3865540 (1975-02-01), Loeffler
patent: 3871952 (1975-03-01), Robertson
patent: 3889024 (1975-06-01), Drelich et al.
patent: 3900621 (1975-08-01), Muck et al.
patent: 3906893 (1975-09-01), Scales
patent: 3953623 (1976-04-01), Das
patent: 3969780 (1976-07-01), Henderson
patent: 3980045 (1976-09-01), Zollner
patent: 4158076 (1979-06-01), Wallstin

Affiliated with

Also associated with

Rating

Method and apparatus for impregnating a fibrous 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 impregnating a fibrous web, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for impregnating a fibrous web will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1192363