Title:
POLYETHYLENE RESIN MATERIAL AND HOLLOW MOLDED ARTICLE MADE THEREOF
Document Type and Number:
Japanese Patent JP2006193671
Kind Code:
A
Abstract:
To provide a polyethylene resin material having excellent long-life durability such as environmental stress cracking resistance (ESCR) as well as excellent moldability such as swell ratio and draw-down resistance and provide a hollow molded article made of the resin material.
The polyethylene resin material satisfies the requirements (a) to (d): (a) the density is 0.940-0.965 g/cm3, (b) the high-load melt flow rate (HLMFR) measured at 190°C under a load of 21.6 kgf is 4.0-10.0 g/10 min, (c) the swell ratio (HLMFR-SR) measured at 190°C under a load of 21.6 kgf satisfies the formula HLMFR-SR(%)>13.2-ln(HLMFR)+15.5, and (d) the strain hardening value in elongational viscosity measurement is ≤0.35.
Inventors:
AOKI MASARU
SAITO SHIGEKI
TONEAKI NOBUHIRO
SAITO SHIGEKI
TONEAKI NOBUHIRO
Application Number:
JP2005008492A
Publication Date:
July 27, 2006
Filing Date:
January 17, 2005
Export Citation:
Assignee:
NIPPON POLYETHYLENE KK
International Classes:
C08L23/04
Domestic Patent References:
| JP2003212924A | 2003-07-30 | |||
| JPS58225105A | 1983-12-27 | |||
| JPS61221245A | 1986-10-01 | |||
| JPH10195261A | 1998-07-28 | |||
| JP2000313425A | 2000-11-14 | |||
| JPH07258327A | 1995-10-09 | |||
| JPH10195135A | 1998-07-28 | |||
| JPH11189602A | 1999-07-13 |
Attorney, Agent or Firm:
Takashi Kojima