| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite cup container which can exhibit an excellent heat insulation property and also can correspond to resource conservation with a simple structure. SOLUTION: A blank forming an outer tube has an extension at the upper part of a fan-shaped body corresponding to the body size of a cup body 1, and several ear parts 3 parted by a cut are formed in the extension. The outer tube 2, all ear parts 3 of which are folded into the inside of the tube part of the outer tube 2, is attached on the outside of the trunk of the cup body 1. Adjacent ear parts 3, parts of which are overlapped to each other, are placed between the trunk of the cup body 1 and the tube part of the outer tube 2. A large insulating cavity is formed by use of the extension provided at the upper part of the blank without inserting a foreign member between the cup body 1 and the outer tube 2. COPYRIGHT: (C)2010,JPO&INPIT
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