Title:
MULTILAYERED STRETCHED HOLLOW MATERIAL
Document Type and Number:
WIPO Patent Application WO/2008/029809
Kind Code:
A1
Abstract:
Disclosed is a multilayered stretched hollow material having excellent transparency and an excellent gas barrier property. The multilayered stretched hollow material comprises: two surface layers each comprising a propylene polymer composition containing a propylene polymer (in an amount of A by weight) and a modified propylene polymer graft-modified with an unsaturated carboxylic acid or a derivative thereof (in an amount of B by weight) (provided that the amounts A and B satisfy the requirement represented by the formula: B/(A+B) ≥ 0.15); and an intermediate layer comprising a modified ethylene-vinyl compound copolymer having a melt flow rate (ASTM D1238, 210˚C, 2.16 kg of loading) of 8 g/10 min. or greater and the crystallization temperature (Tc) of 138˚C or higher, wherein the amount (C; by weight) of the ethylene-vinyl compound copolymer in the multilayered stretched hollow material satisfies the requirement represented by the following formula: C/(A+B+C) ≥ 0.05.
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Inventors:
WADA, Isao (580-32, Nagaura, Sodegaura-sh, Chiba 65, 2990265, JP)
和田 功 (〒65 千葉県袖ヶ浦市長浦５８０－３２ 株式会社プライムポリマー内 Chiba, 2990265, JP)
和田 功 (〒65 千葉県袖ヶ浦市長浦５８０－３２ 株式会社プライムポリマー内 Chiba, 2990265, JP)
Application Number:
JP2007/067232
Publication Date:
March 13, 2008
Filing Date:
September 04, 2007
Export Citation:
Assignee:
PRIME POLYMER CO., LTD. (5-2 Higashi-Shimbashi 1-chome, Minato-ku Tokyo, 17, 1057117, JP)
株式会社プライムポリマー (〒17 東京都港区東新橋一丁目５番２号 Tokyo, 1057117, JP)
WADA, Isao (580-32, Nagaura, Sodegaura-sh, Chiba 65, 2990265, JP)
株式会社プライムポリマー (〒17 東京都港区東新橋一丁目５番２号 Tokyo, 1057117, JP)
WADA, Isao (580-32, Nagaura, Sodegaura-sh, Chiba 65, 2990265, JP)
International Classes:
B32B27/32; B32B1/02; B32B27/28; B32B27/32; B32B1/00; B32B27/28
Attorney, Agent or Firm:
SUZUKI, Shunichiro (S.SUZUKI & ASSOCIATES, Gotanda Yamazaki Bldg. 6F13-6, Nishigotanda 7-chom, Shinagawa-ku Tokyo, 141-0031, JP)
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