CA2312467A1 - Flexible low bulk pre-impregnated tow - Google Patents

Flexible low bulk pre-impregnated tow Download PDF

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Publication number
CA2312467A1
CA2312467A1 CA002312467A CA2312467A CA2312467A1 CA 2312467 A1 CA2312467 A1 CA 2312467A1 CA 002312467 A CA002312467 A CA 002312467A CA 2312467 A CA2312467 A CA 2312467A CA 2312467 A1 CA2312467 A1 CA 2312467A1
Authority
CA
Canada
Prior art keywords
towpreg
fibers
resin
core
resulting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002312467A
Other languages
French (fr)
Other versions
CA2312467C (en
Inventor
Robert M. Davies
Alagirusamy Ramasamy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hexcel Composites GmbH and Co KG
Original Assignee
Applied Fiber Systems, Ltd.
Robert M. Davies
Alagirusamy Ramasamy
Custom Composite Materials, Inc.
Hexcel Composites Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/404,872 external-priority patent/US5756206A/en
Application filed by Applied Fiber Systems, Ltd., Robert M. Davies, Alagirusamy Ramasamy, Custom Composite Materials, Inc., Hexcel Composites Gmbh filed Critical Applied Fiber Systems, Ltd.
Publication of CA2312467A1 publication Critical patent/CA2312467A1/en
Application granted granted Critical
Publication of CA2312467C publication Critical patent/CA2312467C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

A method for producing flexible, low-bulk towpreg which involves powder coating a bundle of unspread fiber tows (35) arranged in a predetermined cross-sectional shape, and the resulting towpreg. During the powder coating process, the resin powder particles do not enter into the fiber bundle, but rather only coat the surface fibers comprising the tows, resulting in dry fibers in the core of the towpreg and outer fibers which are coated with a discontinuous sheath of resin on the surface of the towpreg surrounding the core of dry fibers. The resin layer on the surface of the towpreg is formed by a partial melting of the powder particles. A post-treatment process can be used to convert flat ribbon towpreg produced in accordance with the present invention into flexible unidirectional tape.
CA002312467A 1995-03-15 1996-03-11 Flexible low bulk pre-impregnated tow Expired - Fee Related CA2312467C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/404,872 US5756206A (en) 1995-03-15 1995-03-15 Flexible low bulk pre-impregnated tow
US08/404,872 1995-03-15
CA002218907A CA2218907C (en) 1995-03-15 1996-03-11 Flexible low bulk pre-impregnated tow

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002218907A Division CA2218907C (en) 1995-03-15 1996-03-11 Flexible low bulk pre-impregnated tow

Publications (2)

Publication Number Publication Date
CA2312467A1 true CA2312467A1 (en) 1996-09-19
CA2312467C CA2312467C (en) 2004-02-03

Family

ID=25679749

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002312467A Expired - Fee Related CA2312467C (en) 1995-03-15 1996-03-11 Flexible low bulk pre-impregnated tow

Country Status (1)

Country Link
CA (1) CA2312467C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3000783A1 (en) * 2014-09-23 2016-03-30 The Boeing Company Polymer nanoparticles for controlling permeability and fiber volume fraction in composites
EP3000922A1 (en) * 2014-09-23 2016-03-30 The Boeing Company Printing patterns onto composite laminates
US10538015B2 (en) 2014-10-24 2020-01-21 Porcher Industries Strands powdered by electrostatic method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3000783A1 (en) * 2014-09-23 2016-03-30 The Boeing Company Polymer nanoparticles for controlling permeability and fiber volume fraction in composites
EP3000922A1 (en) * 2014-09-23 2016-03-30 The Boeing Company Printing patterns onto composite laminates
US9845556B2 (en) 2014-09-23 2017-12-19 The Boeing Company Printing patterns onto composite laminates
US10160840B2 (en) 2014-09-23 2018-12-25 The Boeing Company Polymer nanoparticles for controlling permeability and fiber volume fraction in composites
US10538015B2 (en) 2014-10-24 2020-01-21 Porcher Industries Strands powdered by electrostatic method

Also Published As

Publication number Publication date
CA2312467C (en) 2004-02-03

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Effective date: 20140311