Title:
DOUBLE WALLED CONTAINER AND MANUFACTURING METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2017/098867
Kind Code:
A1
Abstract:
The purpose of the invention is to provide a double walled container that can be manufactured easily with molding materials and a molding device that do not differ substantially from conventional ones and for which the bottom of an inner container does not rise and separate from the bottom of an outer container even when the interior volume of a flexible inner container is reduced by the contents being depleted by the contents being consumed, and to provide a manufacturing method for same. A double walled container has a container bottom that is blow molded after an intermediate portion of a parison in the vertical direction is sandwiched by a split mold from the horizontal direction; at least a portion of the container bottom is the portion that is sandwiched by the split mold; the container bottom has a bottom projection on the underside of the container bottom made of the outer layer of a rigid outer layer container and the outer layer of a flexible inner layer container; in the bottom projection, an extended portion of the rigid outer layer container and an extended portion of the flexible inner layer container have protrusions and recesses of different heights in the horizontal direction; and the protrusions and recesses are combined so that the extended portion of the rigid outer layer container and the extended portion of the flexible inner layer container do not shift vertically with respect to each other.
Inventors:
HATAKEYAMA KAZUYUKI (JP)
HATAKEYAMA HARUMASA (JP)
HATAKEYAMA HARUMASA (JP)
Application Number:
PCT/JP2016/083824
Publication Date:
June 15, 2017
Filing Date:
November 15, 2016
Export Citation:
Assignee:
HEIWA KAGAKU IND CO LTD (JP)
International Classes:
B65D1/02
Foreign References:
| JP2015101397A | 2015-06-04 | |||
| JP2004231273A | 2004-08-19 | |||
| JP2004231280A | 2004-08-19 | |||
| JPH08216238A | 1996-08-27 | |||
| JP2006103692A | 2006-04-20 | |||
| EP0532873A1 | 1993-03-24 | |||
| JPS5745035A | 1982-03-13 |
Other References:
See also references of EP 3388351A4
Attorney, Agent or Firm:
NISHIJIMA Takaki et al. (JP)
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