Doctor blade cap

Details Doctor blade cap Doctor blade cap

1990-04-17

1992-03-31

Burr, Edgar S.

Coating apparatus

Solid applicator contacting work

With work-handling or work-supporting

118406, 101119, 101120, 101123, 101124, B05C 100

Patent

active

050997831

ABSTRACT:
A doctor blade for use in an adhesive screen printing apparatus is formed of a main blade member of spring steel along with a U-shaped cap. The cap is ideally formed of a filled nylon material and is attached to the blade member with a silicon RTV compound. The use of this construction results in much more even laydown of adhesive from pattern to pattern and from the left and right hand sides of the screen. Use of the invention also serves to increase screen life.

REFERENCES:
patent: 3592132 (1971-07-01), Weber
patent: 3735730 (1973-05-01), Mitter
patent: 3848992 (1974-11-01), Smith
patent: 4048919 (1977-09-01), Woods
patent: 4232601 (1980-11-01), Mitter
patent: 4393775 (1983-07-01), Cappel et al.
patent: 4503700 (1985-03-01), Kishikawa et al.
patent: 4627345 (1986-12-01), Watts
patent: 4693179 (1987-09-01), Watts
patent: 4870899 (1989-10-01), Bowden
patent: 5001979 (1991-03-01), Kurten
Microprint TM Brochure, "Revolutionary New Hot Melt Application Technology," (1987), 4 pp.

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