| 摘要 |
PURPOSE:To fix uniformly the lapping parts of a thermoshrinkable sheet without occurrence of separation by a method in which the thermoshrinkable sheet is wound on the connecting parts and the end parts of steel pipes or cables for protecting from corrosion and leakage of water and is sealed by a fixing sheet and then heated simultaneously. CONSTITUTION:A thermoshrinkable sheet 2 is wound on steel pipes 1 such that its adhesive layer 3 is positioned at its inside and both ends thereof are mutually lapped. Next, a fixing sheet 4 in which one surface of said sheet 4 is embossed and another surface thereof has the adhesive lapped layer 5 of hot melt type, coats the lapping part 21 of said thermoshrinkable sheet 2. Then, the fixing sheet 4 is stuck to the vicinity of both ends of the thermoshrinkable sheet 2 by heating the fixing sheet by means of a burner, etc. until the emboss pattern of said sheet 4 has disappeared. Next, the thermocontractive sheet 2 is totally heated by a burner, etc. and is caused to contract. |
