Ahlstrom-munksjo Oyj

Vitrulan Composites Oy

Ulla Kosonen

Rainer Bergstrom

Rami Haakana

Maija Hoikkanen

Maija Fjällström

A unidirectional reinforcement and a method of producing a unidirectional reinforcement that may be used in applications where high quality and strength is required. The unidirectional reinforcement includes transversely arranged discrete Z-direction resin flow facilitating means running back and forth between the longitudinal edges of the sheets, and traveling between the groups of rovings and between the top and bottom surfaces of the unitary web.

Unidirectional reinforcement, a method of producing a reinforcement and the use thereof

A unidirectional reinforcement and a method of producing a unidirectional reinforcement for use in applications where high quality and strength is required. The unidirectional reinforcement includes transversely arranged thin discrete flow passage formed to ensure resin flow properties in a direction transverse to the direction of the unidirectional rovings. Thin discrete flow passage forming means are secured on the unidirectional rovings by means of additional yarns running on the thin discrete flow passage forming means and transverse thereto.

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Mikkeli, Finland

Ulla Kosonen