Inflation film of ultrahigh molecular weight polyethylene

Details Inflation film of ultrahigh molecular weight polyethylene Inflation film of ultrahigh molecular weight polyethylene

1988-07-19

1991-01-22

Teskin, Fred

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

428 98, 428910, 5263481, 526352, 264563, 26417717, C08F 1002

Patent

active

049870254

ABSTRACT:
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/cm.sup.2 in a machine direction and at least 700 kg/cm.sup.2 in a transverse direction, an impact strength of at least 5000 kg.multidot.cm/cm, a permeability to water vapor of 0.45 g.multidot.mm/m.sup.2 .multidot.24 hr or less, a shrinkage factor in a transverse direction at 130.degree. C. of 10% or more, and a thickness of 10 to 1000 .mu.m, and a method and apparatus for producing the same.

REFERENCES:
patent: 3944536 (1976-03-01), Lupton et al.
patent: 4545950 (1985-10-01), Motooka et al.
Translation of Japanese Patent Application No. 1983-102713 to Yagi et al., laid open Dec. 20, 1984.
Schwartz et al., Plastics Materials and Processes, Van Nostrand Reinhold Co. Inc., N.Y., N.Y., 74, 1982.

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