MULTILAYER FILM AND BAG FORMED FROM MULTILAYER FILM

WIPO Patent Application WO/2011/152387

A1

Disclosed is a multilayer film comprising an upper layer (A), one or more middle layers (B), and a lower layer (C), laminated in that order. The multilayer film is characterized in that: the middle layer (B) comprises the composition (b1) mentioned below, or a composition (b2); the upper layer (A) and the lower layer (C) each independently contain an ethylene polymer and/or a propylene polymer. Composition (b1) is a composition comprising: a propylene polymer (p1) having a melting point of 140 to 165°C according to differential scanning calorimetry, and a melt flow rate (MFR; ASTM D 1238, 230°C, 2.16 kg load) of 0.1 to 20 g/10 minutes; a random copolymer of propylene and α-olefin (r1) having a molecular weight distribution of 1.0 to 3.5, as measured by gel permeation chromatography (GPC), and a melting point of 90 to 125°C, as measured by differential scanning calorimetry; and 30 wt% to 60 wt% ethylene-based elastomer (however, the sum of the blending quantities of the propylene polymer (p1), the random copolymer of propylene and α-olefin (r1), and the ethylene-based elastomer is 100 wt%). (If the middle layer (B) is the composition (b1), the ratio of the blending quantity of the propylene polymer (p1) in the whole multilayer film to the sum of the blending quantities of the propylene polymer (p1) and the random copolymer of propylene and α-olefin (r1) in the whole multilayer film is 0.1 to 0.35.)

IGARASHI, Koichi (3, Chigusakaigan, Ichihara-sh, Chiba 08, 〒2990108, JP)
五十嵐　康一 (〒08 千葉県市原市千種海岸３　株式会社プライムポリマー内 Chiba, 〒2990108, JP)
SAITO, Tetsuya (3, Chigusakaigan, Ichihara-sh, Chiba 08, 〒2990108, JP)
斎藤　哲也 (〒08 千葉県市原市千種海岸３　株式会社プライムポリマー内 Chiba, 〒2990108, JP)

JP2011/062465

December 08, 2011

May 31, 2011

Click for automatic bibliography generation  

MITSUI CHEMICALS, INC. (5-2 Higashi-Shimbashi 1-chome, Minato-ku Tokyo, 17, 〒1057117, JP)
三井化学株式会社 (〒17 東京都港区東新橋一丁目５番２号 Tokyo, 〒1057117, JP)
OTSUKA PHARMACEUTICAL FACTORY, INC. (115 Aza-Kuguhara, Tateiwa Muya-cho, Naruto-sh, Tokushima 01, 〒7728601, JP)
株式会社大塚製薬工場 (〒01 徳島県鳴門市撫養町立岩字芥原１１５ Tokushima, 〒7728601, JP)
IGARASHI, Koichi (3, Chigusakaigan, Ichihara-sh, Chiba 08, 〒2990108, JP)
五十嵐　康一 (〒08 千葉県市原市千種海岸３　株式会社プライムポリマー内 Chiba, 〒2990108, JP)

B32B27/32; A61J1/10; B32B25/08; B65D30/02; B65D65/40

SSINPAT PATENT FIRM (Gotanda Yamazaki Bldg. 6F, 13-6 Nishigotanda 7-chome, Shinagawa-k, Tokyo 31, 〒1410031, JP)

View/Download PDF      PDF Help

Previous Patent: SEARCH DEVICE, SEARCH CONDITION GENERATION METHOD AND PROGRAM

Next Patent: BIOLOGICAL FUNCTION DIAGNOSIS DEVICE AND PROGRAM