Reinforcing fibres and a method of producing the same
AssigneeDanaklon A/S
InventorAnders S. Hansen
Life of this patent
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Abstract
Reinforcing fibres made from polyolefin and polyolefin derivatives, the fibres having a thickness of 10-100 .mu.m and containing inorganic particles of a size of 1-10 .mu.m in an amount of at least 12% by weight, calculated on the total fibre weight, the particles being embedded in the polyolefin or polyolefin derivative, substantially none of the particles being exposed at fibre surfaces. The inorganic particles are preferably chalk or barium sulphate. The fibres are prepared from a fibrillated, stretched, blown or cast film, which may have been subjected to a surface treatment such as a corona treatment or application of avivage. The reinforcing fibers are useful in composite materials comprising an inorganic binder such as cement and puzzolane.
Claims20
A fiber-reinforced composite material comprising an inorganic cement-based binder and reinforcing fibers, wherein the reinforcing fibers have been prepared by fibrillation of a film made from a polyolefin or polyolefin derivative, the film having been stretched in a ratio of at least 1:15, the fibers having a thickness of 10-100 .mu.m and containing inorganic particles selected from the group consisting of chalk, talc, silica, mica, barium sulphate, glass, and a dyeing agent, the particles having a size of 1-10 .mu.m and being present in the fibers in an amount of 12-20% by weight, calculated based on the total fiber weight, the particles being embedded in the polyolefin or polyolefin derivative and substantially homogeneously distributed within the fibers, substantially none of the particles being exposed at fiber surfaces.
Dependencies are inferred from the claim text.