PROCESS FOR PRODUCING PREFORMS WITH APPLICATION OF A BINDER TO DRY FIBRE FORMED FROM A PLURALITY OF INITIAL FIBRES

The invention relates to a process for producing preforms, comprising the application of a binder to a continuous dry fibre (9) formed from at least two initial fibres, and the layup of said fibre using a layup head in order to form a preform. Binder is applied by means of a fiberisation nozzle (50)...

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Bibliographische Detailangaben
Hauptverfasser:	JOB, Sophie, CAFFIAU, Johann
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention relates to a process for producing preforms, comprising the application of a binder to a continuous dry fibre (9) formed from at least two initial fibres, and the layup of said fibre using a layup head in order to form a preform. Binder is applied by means of a fiberisation nozzle (50) comprising a discharge orifice (53) supplied with liquid or pasty binder, and one or more injection orifices (57) supplied with pressurised gas, so as to deliver the binder in the form of a spiral strand (92), the coils being deposited on the fibre running past a nozzle in order to obtain a fibre provided with strands (93) of binder, said strands bonding the initial fibres together.