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US 5,433,991 AGranted
Reinforcement system for mastic intumescent fire protection coatings comprising a hybrid mesh fabric
AssigneeAvco Corporation
InventorsGeorge P. Boyd, Jr., George K. Castle
Life of this patent
Estimating the term…
Abstract
A reinforcement system for mastic intumescent fire protection coatings. Free floating hybrid mesh embedded in the coating is used to reinforce the coating. The hybrid mesh is made from a combination of high temperature and low temperature yarns.
Claims15
A mesh fabric comprising:
- a) a first plurality of fibers retaining in excess of 80% of their room temperature tensile strength at 343.degree. C. running in the warp and weft directions defining major cells bounded by the first plurality of fibers and having major dimensions, with corners spaced apart in each direction by less than four inches;
- and
- b) a second plurality of fibers which retain less than 80% of their room temperature tensile strength at 343.degree. C. intermeshed with the first plurality of fibers to define minor cells having minor dimensions, with corners spaced apart in each direction by less than two inches, each said major cell being filled with said minor cells, to provide a mesh fabric having appropriate handleability properties and sufficient tensile strength at 343.degree. C. for use as a reinforcement system for mastic fire protection coatings.
In a substrate coated with a fire protective material, a mesh embedded in the fire protective material comprising:
- a) a first plurality of fibers retaining in excess of 80% of their room temperature tensile strength at 343.degree. C. running in the warp and weft directions defining major cells bounded by the first plurality of fibers and having major dimensions, with corners spaced apart in each direction by less than four inches;
- and
- b) a second plurality of fibers which retain less than 80% of their room temperature tensile strength at 343.degree. C. intermeshed with the first plurality of fibers to define minor cells having minor dimensions, with corners spaced apart in each direction by less than two inches, each said major cell being filled with said minor cells, to provide a mesh fabric having appropriate handleability properties and sufficient tensile strength at 343.degree. C. for use as a reinforcement system for mastic fire protection coatings.
Dependencies are inferred from the claim text.