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Title:
POLYETHYLENE RESIN MOLDING MATERIAL FOR CONTAINER LID
Document Type and Number:
WIPO Patent Application WO/2011/126029
Kind Code:
A1
Abstract:
A polyethylene resin molding material for a lid of a container for carbonated beverages and the like, which has excellent high speed moldability, high fluidity, stiffness, impact resistance, durability, heat resistance, lubricity, low smelling properties and safety for foods, having good opening properties and sealing properties, and also having improved stress cracking resistance and FNCT fracture properties upon being handled at higher temperatures, and which contains, as the main component, a polyethylene polymer that fulfills the following characteristic properties: (1) the melt flow rate (MFR) at a temperature of 190˚C·and a load of 2.16 Kg is not less than 0.8 g/10 minutes and less than 5.0 g/10 minutes, the high-load melt flow rate (HLMFR) at a temperature of 190˚C and a load of 21.6 Kg is 180 to 400 g/10 minutes inclusive, and the HLMFR/MFR ratio is 80 to 200; (2) the density is 0.955 to 0.970 g/cm3 inclusive; and (3) a CSD value of a component having a molecular weight of 105 or more is 0.0 to 3.0 as determined based on a measurement value obtained by 13C-NMR spectrometry.

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Inventors:
IBAYASHI KUNIHIKO
KAGAYA IPPEI
HIRAMOTO TOMOMI
YOSHIMOTO KEIICHI
Application Number:
PCT/JP2011/058651
Publication Date:
October 13, 2011
Filing Date:
April 05, 2011
Export Citation:
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Assignee:
JAPAN POLYETHYLENE CORP (JP)
IBAYASHI KUNIHIKO
KAGAYA IPPEI
HIRAMOTO TOMOMI
YOSHIMOTO KEIICHI
International Classes:
B65D41/00; C08F4/646; C08F10/02; C08L23/04
Foreign References:
JP2000248125A2000-09-12
JP2002060559A2002-02-26
JP2003212918A2003-07-30
JP2003212924A2003-07-30
JP2000159250A2000-06-13
JP2007284667A2007-11-01
JP2005320526A2005-11-17
JP2004123995A2004-04-22
JP2008525275A2008-07-17
JPS61246209A1986-11-01
JPS5661406A1981-05-26
Attorney, Agent or Firm:
HAMADA Yuriko et al. (JP)
Yuriko Hamada (JP)
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Claims:



 
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