US 10,648,065 B2 · Systems and methods for manufacturing prepreg tapes

Abstract

Systems and methods for manufacturing unidirectional fiber prepreg tapes for CMC articles are provided. In one exemplary aspect, the method includes casting a matrix material on a carrier film to form a matrix film. The matrix material of the matrix film is then allowed to dry for a predetermined time. The matrix film is then wrapped on a drum and the matrix material is wet to a predetermined viscosity with a solvent. Thereafter, a fiber tow that includes of a plurality of fibers is wound about the drum so that the fiber tow penetrates into the matrix material and the matrix material impregnates the fiber tow to form the prepreg tape.

Claims18

Dependent claims

A method for manufacturing a prepreg tape, the method comprising:

winding a fiber tow comprised of a plurality of fibers about a drum so that the fiber tow penetrates into a matrix material of a matrix film disposed on the drum and so that the matrix material impregnates the fiber tow to form the prepreg tape, wherein during winding, the matrix material has a predetermined viscosity.

Dependencies are inferred from the claim text.

Facts

Application

15/829,484Filed 1 Dec 2017

Published

US 2019/0169724 A16 Jun 2019

Granted

12 May 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification27 codes

C22C 47/064
From wires or filaments only: winding wires
B28B 1/42
By wrapping, e.g. winding: using mixtures containing fibres, e.g. for making sheets by slitting the wound layer
B29B 15/12
Coating or impregnating independently of the moulding or shaping step: of reinforcements of indefinite length
B29C 70/443
Using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding: and…

Systems and methods for manufacturing prepreg tapes

Life of this patent

Systems and methods for manufacturing prepreg tapes

Life of this patent

Abstract

Claims18