| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a composite container wherein even if an expansion portion of a parison is expanded, a sufficient strength can be obtained, and the end of an opening of an outer container can be prevented from being damaged, while an improved design and usability is provided. SOLUTION: The composite container includes a pulp-molded outside container 2 made of paper and an inside container 3 made of a thermoplastic resin and blow-molded in the container 2. The container 2 has a shoulder 21 tapering off toward the end 20 of its opening, while an expansion portion 31 of the parison 30 made of a thermoplastic resin and placed at the end 20 is expanded so that the container 3 is made integral to the container 2, thereby providing the composite container. The parison 30 has a flange 30a covering the end 20 of the opening so that the container 2 is held by the flange 30a and the shoulder 21, while the thickness of the expansion portion 31 is 30-300μm.</p> |
