Inflation film of ultrahigh molecular weight polyethylene

摘要

Disclosed are an inflation film of ultra-high-molecular-weight polyethylene having an intrinsic viscosity [ eta ] of at least 5 dl/g, a tensile strength at break of at least 800 kg/cm2 in a machine direction and at least 700 kg/cm2 in a transverse direction, an impact strength of at least 5000 kgxcm/cm, a permeability to water vapor of 0.45 gxmm/m2x24 hr or less, a shrinkage factor in a transverse direction at 130 DEG C. of 10% or more, and a thickness of 10 to 1000 mu m, and a method and apparatus for producing the same.