Stock material or miscellaneous articles – Composite – Of polycarbonate
Patent
1989-03-22
1991-10-15
Herbert, Jr., Thomas J.
Stock material or miscellaneous articles
Composite
Of polycarbonate
428461, 4284769, 428483, 428516, 428901, B32B 2736, B32B 1508
Patent
active
050573721
ABSTRACT:
A multilayer film having as one surface layer thereof a support layer containing a thermoplastic resin able to withstand temperatures up to 200 degrees C. without softening and the other surface layer an adhesive layer containing a thermoplastic resin having a melting point ranging from about 100 to 200 degrees C. Optionally, a tie layer may be employed between the support layer and the adhesive layer. The multilayer film is useful as a protective carrier sheet for a cladding metal foil used in the production of printed circuit boards. The carrier sheet provides temporary, peelable surface protection for the cladding metal foil preventing contamination and physical damage to the foil both before and during printed circuit board formation. Adhesion of the carrier sheet to the cladding metal foil, measured using a 180 degree peel test is less than 0.4 pounds/in-width and greater than 0.005 pounds/in-width, and preferably less than 0.1 pounds/in-width and greater than 0.01 pounds/in-width.
REFERENCES:
patent: 3544662 (1970-12-01), Polestak et al.
patent: 3892900 (1975-07-01), Shima et al.
patent: 4182457 (1980-01-01), Yamada et al.
patent: 4241129 (1980-12-01), Marton et al.
patent: 4302501 (1981-11-01), Nagashima
patent: 4386991 (1983-06-01), Shiomi et al.
patent: 4410388 (1983-10-01), Oizumi et al.
patent: 4455181 (1984-06-01), Lifshin et al.
patent: 4501634 (1985-02-01), Yoshimura et al.
patent: 4546150 (1985-10-01), Shigemoto
patent: 4604324 (1986-08-01), Nahmias et al.
patent: 4617207 (1986-10-01), Ueki et al.
patent: 4690845 (1987-09-01), Kloss, Jr.
patent: 4753847 (1988-06-01), Wilheim et al.
patent: 4857400 (1989-08-01), Kloss, Jr.
patent: 4861648 (1989-08-01), Kleinschmidt et al.
patent: 4883718 (1989-11-01), Ohta et al.
Imfeld Stephen M.
Shipley Randall S.
Herbert, Jr. Thomas J.
The Dow Chemical Company
LandOfFree
Multilayer film and laminate for use in producing printed circui does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multilayer film and laminate for use in producing printed circui, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multilayer film and laminate for use in producing printed circui will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-990150