| 摘要 |
<p>PROBLEM TO BE SOLVED: To recycle the pieces left after protecting plastic pipes for electric wire coating are cut into required lengths, and to reuse them as protecting pipes for electric wire coatings. SOLUTION: For reusing a piece 14, it is necessary to make it 14 insertable and linkable to an existing connecting pipe 3 for connecting protecting pipes for electric wire coatings, preventing its coming off. To enable that, the cut end (14c) of the piece 14 is heated and softened, and a folded-back part 15 is formed in this end (14c). It is possible to insert and link the folded-back part 15 to a come-off-preventing holding stepped part 11 inside the connecting pipe 3 preventing the pipe 14 from coming off, and to reuse it as a protecting pipe for electric wire coatings.</p> |
