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1. (WO2010084423) PROCESS FOR REDUCING WRINKLES IN COMPOSITE LAMINATED STRUCTURES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/084423 International Application No.: PCT/IB2010/000218
Publication Date: 29.07.2010 International Filing Date: 21.01.2010
IPC:
B29C 63/06 (2006.01) ,B29C 71/00 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
63
Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
02
using sheet or web-like material
04
by folding, winding, bending or the like
06
around tubular articles
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
71
After-treatment of articles without altering their shape; Apparatus therefor
Applicants:
COMPOSITES ATLANTIC LIMITED; 71 Hall Street Lunenburg, Nova Scotia BOJ2CO, CA (AllExceptUS)
STECK, Kevin, P. [US/US]; US
Inventors:
STECK, Kevin, P.; US
BARIL, Claude; CA
SAUNDERS, Scolt; CA
DAVISON, Michael; CA
GUILTON, Maurice; CA
MYRA, Mike; CA
BRAKE, Troy; CA
Agent:
CRAINE, Dean, A.; 9 Lake Bellevue Dr., Suite 208 Bellevue, WA 98005, US
Priority Data:
12/356,55621.01.2009US
Title (EN) PROCESS FOR REDUCING WRINKLES IN COMPOSITE LAMINATED STRUCTURES
(FR) PROCÉDÉ DE RÉDUCTION DES RIDES DE STRUCTURES COMPOSITES STRATIFIÉES
Abstract:
(EN) A wrinkle control process for manufacturing a closed cross-sectional, composite laminate structure on a male tool cured under temperature and pressure. The process includes the step of creating a plurality of filled or unfilled depressions at strategic locations in the laminate prior to curing. The depressions are created by depression forming elements that have a predetermined size designed to create a depression in under plies 12-18, alone or combined with intensification techniques. The depressions may be left unfilled or be partially or completely filled. Depression forming elements are removed after cure or remain part of the structure. The number of elements being determined by the following equation: N = (OPL - OPC) ÷ (Li - Lj), where OPL is the outside perimeter of the composite structure after lay-up and prior to curing, OPC is the outside perimeter of the composite structure after lay-up and after curing, Li is the linear length of the composite segment formed by a depression forming element and Lj is the theoretical linear length of the corresponding composite segment without a depression.
(FR) L'invention concerne un procédé de contrôle des rides pour fabriquer une structure composite stratifiée à sections transversales fermée sur un outil mâle, durcie sous l'action de la température et de la pression. Le procédé comprend l'étape consistant à créer une pluralité de dépressions remplies ou non remplies à des emplacements stratégiques sur le stratifié avant le durcissement. Les dépressions sont créées par des éléments formant des dépressions possédant une taille prédéterminée et capables de créer une dépression dans les couches sous-jacentes 12 à 18, seuls ou en combinaison avec des techniques d'intensification. Les dépressions peuvent être non remplies ou être partiellement ou totalement remplies. Les éléments formant des dépressions sont retirés après le durcissement ou continuent à faire partie de la structure. Le nombre d'éléments est déterminé par l'équation suivante : N = (OPL - OPC) ÷ (Li - Lj), où OPL est le périmètre externe de la structure composite après empilage et avant durcissement, OPC est le périmètre externe de la structure composite après empilage et après durcissement, Li est la longueur linéaire du segment composite formé par un élément formant une dépression et Lj est la longueur linéaire théorique du segment composite correspondant sans dépression.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
CA2734470