G - Physics – 03 – F
Patent
G - Physics
03
F
G03F 7/004 (2006.01) G03F 7/11 (2006.01) H05K 3/34 (2006.01)
Patent
CA 2089822
In a dry film laminate useful in the printed circuit industry comprising a support sheet, a photoimageable composition layer and a protective sheet, a dual intermediate layer is interposed between the photoimageable composition layer and the support sheet. The intermediate layer consists of a water-soluble tie coat in contact with the photoimageable composition layer and a top coat in contact with the support sheet, the top coat being insoluble in neutral or acidic aqueous solution but soluble in dilute alkaline aqueous solution.
Dans un laminé de film sec utile dans l'industrie des circuits imprimés comprenant une feuille d'appui, une couche de composition photoimageable et une feuille protectrice, une couche intermédiaire double est interposée entre la couche de composition photoimageable et la feuille d'appui. La couche intermédiaire consiste en une couche d'accrochage soluble dans l'eau et en contact avec la couche de composition photoimageable et une couche supérieure en contact avec la feuille protectrice, la couche supérieure étant insoluble dans les solutions aqueuses neutres ou acides, mais soluble dans une solution aqueuse alcaline diluée.
Eternal Technology Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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