METHOD FOR PRODUCING CONTINUOUS COMPOSITE SANDWICH STRUCTURES BY PULTRUSION
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United States of America Patent
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Oct 26, 2017
app pub date -
Apr 20, 2017
filing date -
Apr 20, 2016
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Abstract
The present relates to a composite sandwich structure comprising a central core made of pultruded lightweight yarns and outer composite skin of pultruded reinforcement fiber rovings. It is provided a method of producing a composite sandwich structure comprising providing pultruded lightweight and co-impregnated yarns, and a co-pultruded reinforcement fiber rovings; and guiding the pultruded lightweight yarns to form a central core and the pultruded reinforcement fiber rovings forming an outer composite skin within at least one heated pultrusion die producing a composite sandwich structure.
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