US 12,111,279 B2
Insulating material, method for inspecting the weld and control system for quality control of the weld
Ivan Misar, Vestec (CZ); Marek Novotný, Prague (CZ); and Marcel Pelech, Roztoky (CZ)
Assigned to A.W.A.L. S.R.O., Prague (CZ)
Appl. No. 17/601,286
Filed by A.W.A.L. S.R.O., Prague (CZ)
PCT Filed Apr. 2, 2020, PCT No. PCT/CZ2020/000014
§ 371(c)(1), (2) Date Oct. 4, 2021,
PCT Pub. No. WO2020/200333, PCT Pub. Date Oct. 8, 2020.
Prior Publication US 2022/0214297 A1, Jul. 7, 2022
Int. Cl. G01N 27/24 (2006.01); B23K 31/02 (2006.01); B23K 31/12 (2006.01); B32B 5/02 (2006.01); B32B 7/12 (2006.01); B32B 15/085 (2006.01); B32B 15/09 (2006.01); B32B 15/14 (2006.01); B32B 15/20 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); E02D 31/02 (2006.01); E21D 11/38 (2006.01); G01N 27/02 (2006.01)
CPC G01N 27/24 (2013.01) [B23K 31/02 (2013.01); B23K 31/125 (2013.01); B32B 5/02 (2013.01); B32B 7/12 (2013.01); B32B 15/085 (2013.01); B32B 15/09 (2013.01); B32B 15/14 (2013.01); B32B 15/20 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); E02D 31/02 (2013.01); E21D 11/385 (2013.01); G01N 27/02 (2013.01); B32B 2262/0276 (2013.01); B32B 2262/103 (2013.01); B32B 2307/202 (2013.01); B32B 2307/7265 (2013.01); B32B 2307/732 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A composite comprising:
(a) a strip comprising an insulating material that is electrically non-conductive, the strip comprising opposed first and second sides, each of the first and second sides having opposed first and second ends; and
(b) a film comprising a combustible or thermally destructible and electrically conductive material disposed on at least the first side of the strip and on at least a portion of the first end of the first side, the thermally destructible and electrically conductive material being combustible or thermally destructible under conditions of fusion or welding of the strip such that, when the first end of the first side of the strip with the film disposed thereon is fused or welded to an end of a second insulating material that is electrically non-conductive to form a connecting joint, the connecting joint will not be electrically conductive unless at least a remnant of the combustible or thermally destructible element is not destroyed in the fusing or welding, the remnant being detectable to show that an imperfection is present in the connecting joint.