Multilayer dry-film positive-acting laminable photoresist with two photoresist layers wherein one layer includes thermal adhesive

摘要

Dry-film, positive-acting photoresist layers are used in the formation of many articles such as circuit boards, printing plates and the like. Laminable monolayers of photoresist suffer from slow speeds, brittleness, and narrow latitude during development and exposure. The use of a laminable positive-acting photoresist integral adhesive layer on the dry- film, positive-acting photoresist layer improves the properties and performance of the photoresist.