Teijin Aramid B.v.

Hendrik Tjaden

Sanjay Rastogi

Sara Ronca

Joris Van Der Eem

Giuseppe Forte

Jules Harings

Gerardus Janse

A ballistic-resistant molded article includes a compressed stack of sheets made up of reinforcing tapes having a tensile strength of at least 1.0 GPa, a tensile modulus of at least 40 GPa, and a tensile energy-to-break of at least 15 J/g, the direction of the tapes within the compressed stack being not unidirectional. The stack includes a first layer of sheets including reinforcing tapes and a high-density polyethylene (HDPE) as matrix material and a further layer of sheets including reinforcing tapes and a thermoplastic elastomer as matrix material, wherein the further layer includes 0.2-8 wt. % matrix material.

Ballistic resistant articles comprising tapes

The present invention pertains to a polyethylene polymer characterized by the following properties: A number average molecular weight Mn of at least 2.0*10g/mol, a weight average molecular weight of at least 2.0*10g/mol, a Mw/Mn ratio of above 6, and a strain hardening slope of below 0.10 N/mm at 135&#xb0; C. It has been found that a polymer with these properties have be converted through solid state processing into films and fibers with good properties. A solid state processing process, films and fibers, and their use are also claimed.

High molecular weight polyethylene

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Deventer, Netherlands

Hendrik Tjaden