| 摘要 |
PROBLEM TO BE SOLVED: To improve the flexibility of a laminate sheet formed by joining an aluminum foil with first and second synthetic resin films, to increase the joining strength, and to easily extrude a non-cured hardening agent inside when a laminate tube is formed. SOLUTION: The flexibility of a laminate sheet is improved by joining first and second synthetic resin films 1, 2 with an aluminum foil 3 to be laminated therebetween using thermoplastic adhesive resins 4, 4 to be extended by pressing the films and the aluminum foil, and a non-cured hardening agent inside is easily extruded when a laminate tube is formed.
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