| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a polyolefinic resin tube allowing easy determination on whether the depth of a cut made on the tube is within an acceptable standard value. <P>SOLUTION: In one case, the tube consists of two layers with different colors, and the thickness of an outer layer 2 or inner layer 4 is about 10% of the thickness of the tube. In another case, the tube consists of the outer layer 2, an intermediate layer, and the inner layer 4; the thickness of both the outer layer 2 and the inner layer 4 is about 10% of the thickness of the tube, and the colors of the outer layer 2 and the inner layer 4 are different from the color of the intermediate layer. <P>COPYRIGHT: (C)2003,JPO</p> |
