| 摘要 |
PROBLEM TO BE SOLVED: To provide an adhesive strength measuring method of a multiple layer tube capable of measuring adhesive strength easily and in a short period of time within a short term after starting manufacture of the multiple layer tube. SOLUTION: This adhesive strength simple measuring method is practiced in a production process of the multiple layer tube 1 on which a plurality of resin layers are laminated. Test piece 5 is formed by cutting the multiple layer tube formed by extrusion molding in specified width and in specified length by using a simple cutting device 10 set in a production process. Thereafter, peel-strength of the test piece is measured by pulling one layer and the other layers peeled on one end side of the test piece within a short term immediately after production by using a peeling measuring device 30 set in the production process. COPYRIGHT: (C)2005,JPO&NCIPI
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