Visibly transparent dyes for through-transmission laser welding

Details Visibly transparent dyes for through-transmission laser welding Visibly transparent dyes for through-transmission laser welding

2007-10-02

2007-10-02

Yao, Sam Chuan (Department: 1733)

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With means applying wave energy or electrical energy...

C156S272800, C428S411100, C428S543000, C428S913000, C219S121630

Reexamination Certificate

active

10888808

ABSTRACT:
Selection criteria for dyes that predicts efficiency and performance for plastics welding. A first stage quantitative calculation screens dyes that possess an absorption band that can be matched to a laser that is suitable for plastic welding. It also identifies absorption troughs in the visible spectrum and establishes relationships between the relative optical densities of the absorption band and trough. A second stage quantitative calculation screens dyes for their contribution to the transparency of the substrate. By combining these two stages, the usefulness of a candidate dye can be quickly, easily and inexpensively determined.

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