| 摘要 |
A heating strip (30) for heating a separate joining tape with heat softenable adhesive thereon but without integral heating means. The heating strip (30) includes a strip of metal foil (33) or a pair of laterally spaced strips secured to a strip of backing material (32) such as fibreglass mesh. The metal foil (33) is able to be heated to a temperature to soften the heat softenable adhesive. The heating strip is secured to the backing material (32) by a bonding means which is extensible at the heated temperature such that the thermal expansion of the foil (33) is not constrained. A layer of insulating material (34) may also be provided to control the rate of heating or cooling and thereby control the rate of thermal expansion/contraction of the foil. An improved joining tape (10) having integral heating means (14, 15) is also disclosed. |
