Abstract: A plurality of unidirectional sheets (30a, 30b, 30c) are superposed in different directions and they are bonded together. At least one of the unidirectional sheets is made by spreading a tow so as to obtain uniform thickness, width not less than 5 cm, and a weight of no more than 300 g/m2, cohesion being imparted to the sheet so as to enable it to be handled prior to being superposed with other sheets. Advantageously, the unidirectional sheets are made of carbon fibers and are obtained by spreading out large tows.
Type:
Grant
Filed:
September 27, 1999
Date of Patent:
July 1, 2003
Assignees:
Societe Nationale d'Etude et de Construction de Moteurs
d'Aviation (SNECMA), Hexcel Fabrics
Inventors:
Bruno Bompard, Pierre Olry, Renaud Duval, Alain Bruyere, Dominique Coupe, Jean Aucagne
Abstract: A bias fabric is provided in that it is in the form of a cloth of length (L) and of finite width (l), being constructed by interlaced yarns (2, 3) extending in respective directions (D and d) that are oblique relative to the length (L), and each of which presents no knotting. The invention is applicable to engineering fabrics based on flat yarns.
Type:
Grant
Filed:
September 19, 2001
Date of Patent:
December 17, 2002
Assignee:
Hexcel Fabrics (societe anonyme)
Inventors:
Alain Bruyere, Christian Debaille, Franck Perret
Abstract: A mesh web is characterized in that it has interlaced threads providing meshes that define locally a zone (5a or 5b) having a mesh void factor that is different from that of the remainder of the web. It is applicable to make light-attenuating binds.
Abstract: A reinforcing web constituted by substantially parallel and spaced-apart warp threads and by pairs of reinforcing threads, each shaped in the form of successive half-loops alternating in a weft direction. The successive half-loops of the reinforcing threads in each pair extend in opposite directions, and the pairs of threads are spaced apart from one another in such manner that the half-loops of the threads corresponding to two successive pairs overlap and together define closed loops which are set by means of flexible binding stitches formed in the overlap zones between the two half-loops and the warp threads. At least some of the reinforcing threads are constituted by metal tows. The reinforcing web is suitable for application to the seats of public transport vehicles.