| 摘要 |
<p>PROBLEM TO BE SOLVED: To make it light and easy to cut for easy work, and enable it to be manufactured at low cost in a short time with reused scrap plastic, by making a trough consist of a trough body molded of melted scrap plastic and a cover. SOLUTION: A trough body 1 and a cover 2 are ones which are molded by melting scrap plastic and casting it in a mold. A body coupling projection 3 and a body coupling recess 4 are made in the same shape and dimensions, and the body coupling recess 4 of other trough body 1 on the body coupling projection 3, and the body coupling projection 3 of the other trough body 1 in the body coupling recess 4, are set capably of engagement and break. Moreover, the cover coupling projection 5 and the cover coupling recess 6 are made in the same shape and dimensions, and the cover coupling recess 6 of the cover 2 on the cover coupling projection 5, and the cover coupling projection 5 of the other cover 2 in the cover coupling recess 6, are set capably of engagement and break. Accordingly, this trough becomes light, so this is easy of handling, and the cutting work becomes easy, too, and this can be manufactured in a short time.</p> |
