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1. WO2020197707 - SYSTEM AND METHOD FOR IN-SITU IMPREGNATION OF CONTINUOUS FIBER TOWS WITH THERMOPLASTIC RESIN

Publication Number WO/2020/197707
Publication Date 01.10.2020
International Application No. PCT/US2020/020601
International Filing Date 02.03.2020
IPC
B29C 70/40 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
40Shaping or impregnating by compression
B29C 70/50 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
40Shaping or impregnating by compression
50for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds or cross moulding compounds
B29C 70/28 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
D06M 15/00 2006.01
DTEXTILES; PAPER
06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0664
15Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compounds; Such treatment combined with mechanical treatment
D06M 15/37 2006.01
DTEXTILES; PAPER
06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0664
15Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compounds; Such treatment combined with mechanical treatment
19with synthetic macromolecular compounds
37Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
D06M 15/39 2006.01
DTEXTILES; PAPER
06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0664
15Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compounds; Such treatment combined with mechanical treatment
19with synthetic macromolecular compounds
37Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
39Aldehyde resins; Ketone resins; Polyacetals
Applicants
  • RENSSELAER POLYTECHNIC INSTITUTE [US]/[US]
Inventors
  • GAROFALO, James, John
  • WALCZYK, Daniel, F.
Agents
  • GANGEMI, Antony, P.
Priority Data
62/812,59601.03.2019US
62/981,24225.02.2020US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM AND METHOD FOR IN-SITU IMPREGNATION OF CONTINUOUS FIBER TOWS WITH THERMOPLASTIC RESIN
(FR) SYSTÈME ET PROCÉDÉ D'IMPRÉGNATION IN SITU DE CÂBLES DE FILAMENTS DE FIBRES CONTINUS AVEC DE LA RÉSINE THERMOPLASTIQUE
Abstract
(EN)
A method and system for impregnating a source of fiber tow is provided. A stream of fiber tow is drawn through a tow guide to align the fiber tow with a predetermined path. The stream is drawn in tension across a series of tow spreader pins, that include convex spreading surface aligned with the predetermined tow path. As the fiber tow is drawn over spreading surfaces, the fibers tend to spread and/or fan out along that surface. The stream of fiber tow now being spread to a greater width and reduced thickness, the spread fiber tow is drawn through an impregnation die that includes a plurality of resin supply conduits. Resin melt is applied to the spread fiber tow from one or more directions to fully impregnate the fiber tow. The prepreg fiber tow is then drawn to a converging die which removes excess resin and converge to a fiber tow product. An angled drive roller is utilized to pull the fiber tow with sufficient force to overcome dry and viscous friction in the system components.
(FR)
La présente invention concerne un procédé et un système d'imprégnation d'une source de câble de filaments de fibres. Un flux de câble de filaments de fibres est étiré à travers un guide de câble de filaments pour aligner le câble de filaments de fibres sur un trajet prédéterminé. Le flux est étiré sous tension à travers une série de broches d'étalement de câble de filaments, qui comprennent une surface d'étalement convexe alignée sur le trajet de câble de filaments prédéterminé. Lorsque le câble de filaments de fibres est étiré sur les surfaces d'étalement, les fibres tendent à s'étaler et/ou à s'échapper le long de cette surface. Le flux de câble de filaments de fibres étant maintenant étalé sur une plus grande largeur et une épaisseur réduite, le câble de filaments de fibres étalé est étiré à travers une filière d'imprégnation qui comprend une pluralité de conduites d'alimentation de résine. La masse fondue de résine est appliquée au câble de filaments de fibres étalé depuis un ou plusieurs sens pour imprégner entièrement le câble de filaments de fibres. Le câble de filaments de fibres préimprégné est ensuite étiré vers une filière de convergence qui retire la résine en excès et fait converger vers un produit de câble de filaments de fibres. Un rouleau d'entraînement incliné est utilisé pour tirer le câble de filaments de fibres avec une force suffisante pour surmonter le frottement sec et visqueux dans les composants du système.
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