Prepreg material having increased surface tack

Details Prepreg material having increased surface tack Prepreg material having increased surface tack

1979-09-17

1982-05-11

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428212, 428218, 428225, 428245, 428260, 428268, 428408, 428902, B32B 300, B32B 2714

Patent

active

043293875

ABSTRACT:
A prepreg having substantially no excess resin while at the same time having an aggressive tack. Small discrete amounts of additional resin are selectively applied to a surface of the prepreg sheets in a regular array. The resin is applied at a sufficient viscosity that it does not sink into the prepreg fabric. The additional resin typically covers less than 25% of the surface and constitutes between 0.1% and 3% of the prepreg weight. The additional resin may be applied by a gravure roller having a surface etched with an appropriate array of indentations. A doctor blade partially defines a reservoir of resin in contact with a portion of the gravure roller and wipes the surface, thereby leaving resin only in the indentations. The doctor blade may be oscillated parallel to the roller axis to prevent accumulations of short fibers from impairing the wiping action.

REFERENCES:
patent: 2855327 (1958-10-01), Gilchrist et al.
patent: 3117053 (1964-01-01), Lawrence et al.
patent: 3186866 (1965-06-01), Claeys
patent: 3737368 (1973-06-01), Such et al.
patent: 3808088 (1974-04-01), Knechtges et al.
patent: 3908058 (1975-09-01), Russell
patent: 3964952 (1976-06-01), Brie et al.
patent: 3971669 (1976-07-01), Wrzesien et al.
patent: 3972765 (1976-08-01), Kondo et al.
patent: 4024305 (1977-05-01), Alpaugh et al.
patent: 4076881 (1978-02-01), Sato

Affiliated with

Also associated with

Rating

Prepreg material having increased surface tack does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Prepreg material having increased surface tack, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Prepreg material having increased surface tack will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-756280