Title:
PROCESS FOR PRODUCTION OF MULTILAYERED STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2011/136287
Kind Code:
A1
Abstract:
Disclosed is a process for producing a multilayered structure, which comprises a step of grinding a multilayered structure (B) having a layer of a resin composition (A) and sieving the resultant ground product to produce a collected material (C) and a step of producing a multilayered structure (F) having a layer of a resin composition (E) produced by melt-kneading the collected material (C) and a polyolefin (D), wherein the resin composition (A) comprises a polyolefin (G), a saponified ethylene-vinyl acetate copolymer (H) having an ethylene content of 20 to 65 mol% and having a sapofinication degree of a vinyl acetate unit of 96% or more, a saponified ethylene-vinyl acetate copolymer (I) having an ethylene content of 68 to 98 mol% and having a sapofinication degree of a vinyl acetate unit of 20% or more, and an antistatic agent (J), and wherein the H/I ratio is 0.1 to 10 by mass. The process can produce a multilayered structure in which the occurrence of uneven cloudiness and the deterioration of cloudiness are prevented, using a material collected from a multilayer structure having a layer of a resin composition comprising a polyolefin and EVOH.
Inventors:
IGARASHI, Takeyuki (7471, Tamashimaotoshima, Kurashiki-sh, Okayama 50, 〒7138550, JP)
五十嵐 武之 (〒50 岡山県倉敷市玉島乙島７４７１番地 株式会社クラレ内 Okayama, 〒7138550, JP)
HANEDA, Yasuhiko (1-1-3 Otemachi, Chiyoda-k, Tokyo 15, 〒1008115, JP)
五十嵐 武之 (〒50 岡山県倉敷市玉島乙島７４７１番地 株式会社クラレ内 Okayama, 〒7138550, JP)
HANEDA, Yasuhiko (1-1-3 Otemachi, Chiyoda-k, Tokyo 15, 〒1008115, JP)
Application Number:
JP2011/060297
Publication Date:
November 03, 2011
Filing Date:
April 27, 2011
Export Citation:
Assignee:
KURARAY CO., LTD. (1621, Sakazu Kurashiki-sh, Okayama 01, 〒7100801, JP)
株式会社クラレ (〒01 岡山県倉敷市酒津１６２１番地 Okayama, 〒7100801, JP)
IGARASHI, Takeyuki (7471, Tamashimaotoshima, Kurashiki-sh, Okayama 50, 〒7138550, JP)
五十嵐 武之 (〒50 岡山県倉敷市玉島乙島７４７１番地 株式会社クラレ内 Okayama, 〒7138550, JP)
株式会社クラレ (〒01 岡山県倉敷市酒津１６２１番地 Okayama, 〒7100801, JP)
IGARASHI, Takeyuki (7471, Tamashimaotoshima, Kurashiki-sh, Okayama 50, 〒7138550, JP)
五十嵐 武之 (〒50 岡山県倉敷市玉島乙島７４７１番地 株式会社クラレ内 Okayama, 〒7138550, JP)
International Classes:
B32B27/28; B32B27/18; B32B27/32
Attorney, Agent or Firm:
NAKATSUKASA, Shigeki (Setouchi International Patent Firm, Growth-2 Building 4-9-1, Ima, Kita-ku, Okayama-sh, Okayama 75, 〒7000975, JP)
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Claims: