Welded joint between plastic parts

Details Welded joint between plastic parts Welded joint between plastic parts

1988-01-04

1990-09-11

Kundrat, Andrew V.

Joints and connections

With indicator or inspection means

403270, 156276, B25G 300, F16B 100

Patent

active

049557408

ABSTRACT:
The invention relates to a welded joint between plastic parts, the welding quality of which can be checked in a non-destructive way. In particular, a coating of an X-ray contrast medium, of sharply set-off contour and of specific outline shape, is introduced, before welding, in the region of the welding gap. The coating is narrower or smaller than the zone to be welded. It can be a strip of specific width or a pattern comprising recurring contour parts. The coating can be printed on or take the form of an inserted auxiliary film. Coloring pigments based on heavy metal, metal powder, rock dust, powdered glass or ceramic powder come under consideration as X-ray contrast media.

REFERENCES:
patent: 3461014 (1969-08-01), James
patent: 3574031 (1971-04-01), Heller, Jr. et al.

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