| 摘要 |
<p>1296613 Soldering; jointing LIBBEYOWENS-FORD CO 18 May 1970 [23 May 1969] 23902/70 Headings B3R and B3V [Also in Division C7] An electrically conducting frit containing stripe fused on a glass surface is repaired by silver containing soft solder or by silver flake in a binder. A break or thinning 33, Fig. 7, in a metal-frit stripe on a curved vehicle rear window, the stripe having been produced by firing a paste containing 50-85% silver, 1-10% glass frit and 5-50% organic binders and solvents, is repaired by burnishing the area with a fine emery cloth or ink eraser, preferably applying rosin flux and then by a pencil type soldering iron 36 applying solder 35 comprising 3% Ag, 61À5% Sn, 35À5% Pb or 2% Ag, 36% Sn, 62% Pb. In a modification a long break is repaired by placing strips 54, 55 Fig. 11 of masking material adjacent the gap and then brushing on a two part epoxy-silver flake paint or an air drying composition containing 43% Ag (in flake form) and 57% lacquer binder, at 58. After removal of the masking material the edges of the dried painted area are trimmed by a razor blade.</p> |
