Polyolefin fiber reinforced rubber
AssigneeHoneywell International Inc.
InventorsAshok Bhatnagar, David S. Cordova
Life of this patent
Estimating the term…
Abstract
Rubberized polyolefin fabrics, particularly rubberized polyolefin fiber containing fabrics and a method for vulcanizing rubber without melting or lowering the performance of the fibers. A plurality of fibrous layers are molded and rubberized under high pressures, producing fabrics having customized stiffness properties.
Claims55
A rubberized, molded ballistic resistant fabric comprising a plurality of woven fibrous layers comprising polyolefin fibers or a plurality of non-woven fibrous layers comprising polyolefin fibers, or a combination of at least one woven fibrous layer and at least one non-woven fibrous layer of polyolefin fibers;
- said fabric having a stiffness of at least about 10 ksi as measured by ASTM D790;
- and said polyolefin fibers having a tenacity of about 7 g/denier or more and a tensile modulus of about 150 g/denier or more;
- said fabric having a rubber composition on at least one surface thereof.
A method of forming a rubberized, ballistic resistant fabric comprising:
- i) applying a layer of an unvulcanized rubber composition onto at least one surface of a ballistic resistant fabric, said fabric comprising a plurality of woven fibrous layers comprising polyolefin fibers or a plurality of non-woven fibrous layers comprising polyolefin fibers, or a combination of at least one woven fibrous layer and at least one non-woven fibrous layer of polyolefin fibers;
- said polyolefin fibers having a tenacity of about 7 g/denier or more and a tensile modulus of about 150 g/denier or more;
- ii) molding said fabric under sufficient heat and pressure to vulcanize said rubber composition and to produce a rubberized fabric having a stiffness of at least about 10 ksi as measured by ASTM D790.
A method of forming a rubberized, ballistic resistant fabric comprising:
- i) positioning a vulcanized rubber layer onto at least one surface of a ballistic resistant fabric, said fabric comprising a plurality of woven fibrous layers comprising polyolefin fibers or a plurality of non-woven fibrous layers comprising polyolefin fibers, or a combination of at least one woven fibrous layer and at least one non-woven fibrous layer of polyolefin fibers;
- said polyolefin fibers having a tenacity of about 7 g/denier or more and a tensile modulus of about 150 g/denier or more;
- and
- ii) molding said fabric under sufficient heat and pressure to attach said vulcanized rubber layer to said ballistic resistant fabric and to thereby produce a rubberized fabric having a stiffness of at least about 10 ksi as measured by ASTM D790.
A method of forming a rubberized, ballistic resistant fabric comprising:
- positioning a vulcanized rubber layer onto at least one surface of a molded ballistic resistant fabric, said fabric comprising a plurality of woven fibrous layers comprising polyolefin fibers or a plurality of non-woven fibrous layers comprising polyolefin fibers, or a combination of at least one woven fibrous layer and at least one non-woven fibrous layer of polyolefin fibers;
- said polyolefin fibers having a tenacity of about 7 g/denier or more and a tensile modulus of about 150 g/denier or more;
- and wherein said rubberized, molded fabric has a stiffness of at least about 10 ksi as measured by ASTM D790.
Dependencies are inferred from the claim text.