Coating apparatus – Solid applicator contacting work – With work-handling or work-supporting
Patent
1995-06-07
1997-05-20
Czaja, Donald E.
Coating apparatus
Solid applicator contacting work
With work-handling or work-supporting
156184, B05C 108
Patent
active
056308744
ABSTRACT:
Apparatus and process are described for impregnating a fibrous substrate with a thermosettable resin. The process involves the use of resin application means comprising a moving surface on which is positioned a liquid-form thermosettable resin in essentially uncured state, passing a fibrous web in countercurrent contact with the thermosettable resin so as to transfer the thermosettable resin into the fibrous web, and passing the resin-containing fibrous web to a heating zone to partially cure the resin and form a prepreg. The process is particularly suited for application of a solventless resin formulation to a glass web in the preparation of a prepreg for an electrical laminate. The apparatus includes resin application means comprising a movable surface; means for applying a liquid-form thermosettable resin onto the movable surface; means for advancing, in a countercurrent direction with respect to the direction of motion of the movable surface, a fibrous web to the movable surface and in contact with the thermosettable resin thereon and thence to a resin cure zone; and means not in contact with the opposite side of the fibrous web at the point of resin transfer for maintaining tension in the glass web sufficient to promote transfer of the liquid resin film from the movable surface into the interior of the glass web.
REFERENCES:
patent: 2199228 (1940-04-01), Obenshain et al.
patent: 2792324 (1957-05-01), Daley et al.
patent: 3826703 (1974-07-01), Russell
patent: 3881445 (1975-05-01), Nothiger
patent: 3908042 (1975-09-01), Heissler et al.
patent: 4139591 (1979-02-01), Jurisich
patent: 4185133 (1980-01-01), Woerner et al.
patent: 4244990 (1981-01-01), Mayerhoffer
patent: 4327143 (1982-04-01), Alvino et al.
patent: 4561377 (1985-12-01), Youngkeit
patent: 4628861 (1986-12-01), Mitchell
patent: 4767643 (1988-08-01), Westervelt et al.
patent: 4774107 (1988-09-01), Kwiatkowski et al.
patent: 4804509 (1989-02-01), Angell et al.
patent: 4886684 (1989-12-01), Schnell et al.
Ullmanns Encyclopedia of Indus. Chemistry, 4th Ed., vol. 14, pp. 244-247 (1977).
Encyclopedia of Polymer Science & Engineering, vol. 3, pp. 552-562 (1985).
"Units for the Manufacture of Prepregs", Plastics , vol. 79, pp. 221-224 (1989).
"Coating Process", Encylopedia Chemical Technology, 3rd Ed., pp. 386-426.
"Formulating With Dow Epoxy Resins: Electrical Laminates", Dow Chemical Co. (1990) (Also Exhibit A to Amendment).
Chevako Donald M.
Hartley John J.
Stelling Walter R.
Tait Robert A.
Czaja Donald E.
Padgett Calvin
Shell Oil Company
LandOfFree
Apparatus for resin impregnation of a fibrous substrate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for resin impregnation of a fibrous substrate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for resin impregnation of a fibrous substrate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1721366