FORMATION OF RUBBER, PLASTIC CABLE JOINTING

摘要

PURPOSE:To detect chips or fine powder of an auxiliary insulating tape mixed into insulating layer through X-ray inspection, by composing the auxiliary insulating tape of such material as can be detected through X-ray. CONSTITUTION:PVC adhesive tapes of various colors are previously mixed into a sample identical with an inspection object then X-ray inspection is performed, where PVC adhesive tapes having only such colors as can be inspected easily through a photograph film are employed. Consequently, the PVC tape can be inspected reliably through X-ray even if there are mixed chips or fine powder mentioned above in the insulating layer at a joint and they can be removed.