Patent ID: 9744714
Date: 2017-08-29
CPC Classifications: B29C,B29K,C08F,C08J

Claim:
1. An UHMWPE film having a tensile strength of at least 2.0 GPa, a tensile energy to break of at least 30 J/g, an Mw of at least 500,000 gram/mole, and a Mw/Mn ratio of at most 6, and a film width of at least 5 mm, wherein the UHMWPE film is made from an UHMWPE particle having an elastic shear modulus determined directly after melting at 160° C. of at most 1.0 MPa, wherein the UHMWPE film is made by a solid state process under such conditions that at no point during the solid state process is a temperature of the UHMWPE raised above an equilibrium melting point of the UHMWPE, and wherein the UHMWPE is produced in the presence of a single-site polymerization catalyst that is present at a concentration of less than 1×10 −4 mol catalyst per liter reaction medium.