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US 9,174,394 B2Granted
Prepregs
AssigneeHexcel Composites Limited
InventorsMartin Simmons, John Cawse
Life of this patent
Estimating the term…
Abstract
The invention provides a prepreg comprising matrix and fibers, having deposited thereon a plurality of regions raised at least 5 micrometers relative to the surface of the matrix, a method of preparing such a prepreg, a method of curing a laminate of a plurality of such preprags and the cured laminate produced by such a method.
Claims20
A modified prepreg wherein regions of cured ink are located on uncured thermosetting resin that forms the uncured surface of a prepreg in order to reduce the porosity of laminates made from said prepreg, said prepreg comprising:
- a prepreg comprising a layer of fibers and an uncured matrix, said uncured matrix comprising uncured thermosetting resin wherein said prepreg comprises an outer uncured fibre-free surface that is formed by said uncured thermosetting resin;
- and
- a plurality of hardened fibre-free raised regions of cured ink that are located on top of said outer uncured fibre-free surface, said regions of cured ink having a thickness that extends a height above said outer uncured fibre-free surface wherein the thickness of said regions of cured ink is from 10 to 100 micrometers.
Dependencies are inferred from the claim text.