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Patent Searching and Data


Title:
CUP-TYPE MULTILAYERED CONTAINER
Document Type and Number:
WIPO Patent Application WO/2017/002931
Kind Code:
A1
Abstract:
The present invention relates to a multilayered container obtained by thermoforming a multilayered precursor comprising: inner and outer layers obtained from an ethylene terephthalate polyester resin; and at least one layer of an intermediate layer obtained from at least a low crystallinity ethylene terephthalate polyester resin and a gas barrier aromatic polyamide resin. The difference in refractive index (∆RI), which is represented by equation (1), for the low crystallinity ethylene terephthalate polyester resin and gas barrier aromatic polyamide resin ∆RI=│RIE-RIA│ (1) wherein RIE and RIA represent the respective refractive indices after injection molded sheets obtained from the low crystallinity ethylene terephthalate polyester resin and the gas barrier aromatic polyamide resin have been stretched three-fold in one axial direction, is 0.03 or less, and haze of the side surface of the container is 5% or less. As a result, the container has a multilayered structure obtained from inner and outer layers made of polyester resin and an intermediate layer made of a blend of a polyester resin and an aromatic polyamide resin, and satisfies requirements for excellent transparency, gas barrier properties and inter-layer adhesiveness.

Inventors:
HIRAYAMA, Yukiko (Corporate Research & Development, 22-4, Okazawa-cho, Hodogaya-ku, Yokohama-sh, Kanagawa 62, 〒2400062, JP)
YAMADA, Toshiki (Corporate Research & Development, 22-4, Okazawa-cho, Hodogaya-ku, Yokohama-sh, Kanagawa 62, 〒2400062, JP)
ISHIHARA, Takayuki (Corporate Research & Development, 22-4, Okazawa-cho, Hodogaya-ku, Yokohama-sh, Kanagawa 62, 〒2400062, JP)
TASHIRO, Yuuki (Corporate Research & Development, 22-4, Okazawa-cho, Hodogaya-ku, Yokohama-sh, Kanagawa 62, 〒2400062, JP)
Application Number:
JP2016/069480
Publication Date:
January 05, 2017
Filing Date:
June 30, 2016
Export Citation:
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Assignee:
TOYO SEIKAN GROUP HOLDINGS, LTD. (18-1, Higashi-Gotanda 2-chome Shinagawa-k, Tokyo 27, 〒1418627, JP)
International Classes:
B65D1/28; B32B27/36; B65D65/40; B65D81/24
Attorney, Agent or Firm:
ONO, Hisazumi et al. (Nishi-Shimbashi Daiichi Hoki bldg, 5-2 Nishi-Shimbashi 3-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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