Protected conductive foil and procedure for protecting an electr

Details Protected conductive foil and procedure for protecting an electr Protected conductive foil and procedure for protecting an electr

1991-01-04

1992-06-09

Ryan, Patrick J.

Stock material or miscellaneous articles

Sheet including cover or casing

Complete cover or casing

428192, 428198, 428457, 428461, 428480, 428516, 428212, 428332, 428334, 428335, 428 40, 428 42, 428901, 428906, 156148, 156150, 156233, 1562751, B32B 302

Patent

active

051205904

ABSTRACT:
A conductive copper foil for use in preparing printed circuit boards is protected from damage during storage, shipment and further processing by covering one side of the foil with a sheet of polyethylene film. The film is removably joined with the foil by an adhesive material placed between the film and the foil in a marginal area of the latter. The film is selected to be sufficiently resistant to laminating temperature and pressure conditions so as to remain in its covering, protecting relationship to the foil and avoid sticking to the laminating press plate and retain its removability from the foil after lamination.

REFERENCES:
patent: 2350247 (1967-10-01), Steinberg
patent: 2668348 (1954-02-01), Hubbell
patent: 2706165 (1955-04-01), Korsgaard
patent: 2864755 (1958-12-01), Rothacker
patent: 3589975 (1971-06-01), Andrews
patent: 3647592 (1972-03-01), Woodberry
patent: 3755043 (1973-08-01), Igarashi
patent: 4022648 (1977-05-01), Woodberry
patent: 4179324 (1979-12-01), Kirkpatrick
patent: 4446188 (1984-05-01), Patel
DuPont Trade Bulletitn, Mylar 920B, High-Performance Films Division Nov. 1986.

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