发明名称 Polypropylene film and multilayered laminate
摘要 The polypropylene film of the present invention satisfies the relationship: TM>=12.5xHST-900, wherein TM is a tensile modulus (MPa) and HST is a heat seal temperature (° C.), and is well-balanced between the tensile modulus and the heat seal temperature, less tacky, and excellent in processability, transparency and impact resistance. The polypropylene film may be produced from a propylene polymer (A) having: (1) a melting point (Tm) of from 120 to 135° C. as measured by differential scanning calorimeter (DSC); (2) a melting endotherm DeltaH (J/g) as measured by the DSC, satisfying the following formula: DeltaH>=0.45xTm+22; (3) a peak top half-width (Th) of 5° C. or lower when measured on an elution curve by temperature rising fractionation; and (4) an intrinsic viscosity [eta] of from 1 to 3 dl/g as measured at 135° C. in tetralin. A multilayered polyolefin resin laminate of the present invention comprises at least one outermost layer made of the above polypropylene film, and is well-balanced between a tensile modulus and a heat seal temperature, less tacky and excellent in slipping and anti-blocking properties.
申请公布号 US6770355(B1) 申请公布日期 2004.08.03
申请号 US20020110204 申请日期 2002.04.17
申请人 IDEMITSU PETROCHEMICAL CO., LTD. 发明人 MINAMI YUTAKA;KANAMARU MASAMI;FUNABASHI HIDEO
分类号 B29D7/01;B32B27/32;C08F4/645;C08F10/06;C08F110/06;C08J5/18;(IPC1-7):B32B27/32 主分类号 B29D7/01
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