Process and system for fabricating a reinforcing preform
First Claim
1. A process for fabricating a multidirectional fibrous reinforcement designed to be a porous preform for producing a part made of a composite material, said process comprising the steps of:
- depositing at least one reinforcing thread in at least two successive layers on a support surface;
providing a binder in association with said reinforcing thread so as to adhere said reinforcing thread to said support surface wherein said binder also provides a bond between said successive layers; and
pressing said reinforcing thread against the support surface during said depositing step in a manner that exerts a pressure substantially perpendicular to said support surface at the point where the thread is deposited.
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Accused Products
Abstract
Process and system for fabricating a multidirectional fibrous reinforcement designed to be a porous preform for producing a part made of a composite material. Reinforcing thread is deposited in successive layers on a support surface. A binder is provided in association with the reinforcing thread so as to adhere the reinforcing thread to the support surface and the successive layers of thread. The reinforcing thread is pressed against the support surface in a manner that exerts a pressure substantially perpendicular to the support surface at the point where the thread is deposited. The binder may be pre-applied to the support surface or it can be applied simultaneously with the reinforcement thread.
25 Citations
39 Claims
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1. A process for fabricating a multidirectional fibrous reinforcement designed to be a porous preform for producing a part made of a composite material, said process comprising the steps of:
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depositing at least one reinforcing thread in at least two successive layers on a support surface;
providing a binder in association with said reinforcing thread so as to adhere said reinforcing thread to said support surface wherein said binder also provides a bond between said successive layers; and
pressing said reinforcing thread against the support surface during said depositing step in a manner that exerts a pressure substantially perpendicular to said support surface at the point where the thread is deposited. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for fabricating a multidirectional fibrous reinforcement, said system comprising:
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a support comprising a surface that has the form of the fibrous reinforcement to be fabricated;
means for providing at least one reinforcing thread, at least one deposit head which includes a presser surface for pressing the reinforcing thread against the surface of said support;
means for guiding the reinforcing thread to the presser surface of said deposit head;
means for moving said deposit head in relation to the surface of said support such that the reinforcing thread is pressed against the surface of said support and wherein said presser surface is maintained substantially tangent to the surface of said support so that the pressure exerted by said deposit head is substantially perpendicular to the surface of said support. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification