Glass fibre branches mfr. - in which at least 2 fibres are prepd. and positioned adjacently and welded to each other by heating parts using arc between electrodes

摘要

The method is for mfg. glass fibre branch and has first two or more glass fibres prepared and positioned next to each other over a part of their length. The fibres are welded to each other by heating the parts against each other after which they are further heated with the aid of arc-welding electrodes. The electrodes over that part where they are welded together are subjected to a tensile force so that the core of the fibre is constricted and the finally obtained branch is attached inside a housing. The arc flame extends in the length direction of the fibres and the fibres need heating before welding and takes place by an arc between the same direction as or transverse to the electrodes. The electrodes are provided in a pair and movable along the welded section, in an Argon or Nitrogen gas atmosphere, or a mixt. of the two gases.