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1. (WO2013112783) INJECTION MOLDING APPARATUS AND METHOD OF MAKING FOAMED INJECTION MOLDED PRODUCT
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2013/112783 International Application No.: PCT/US2013/023053
Publication Date: 01.08.2013 International Filing Date: 25.01.2013
Chapter 2 Demand Filed: 22.11.2013
IPC:
B29C 45/17 (2006.01) ,B29C 44/10 (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
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17
Component parts, details or accessories; Auxiliary operations
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
44
Shaping by internal pressure generated in the material, e.g. swelling, foaming
02
for articles of definite length, i.e. discrete articles
10
Applying counter-pressure during expanding
Applicants:
AINE, Kevin Bradley [US/US]; US
Inventors:
AINE, Kevin Bradley; US
VEREECKEN, David; US
Agent:
WENDOLOWSKI, Michael P.; RENNER, OTTO, BOISSELLE & SKLAR, LLP 1621 Euclid Avenue Nineteenth Floor Cleveland, Ohio 44115, US
Priority Data:
61/590,42725.01.2012US
Title (EN) INJECTION MOLDING APPARATUS AND METHOD OF MAKING FOAMED INJECTION MOLDED PRODUCT
(FR) APPAREIL DE MOULAGE PAR INJECTION ET PROCÉDÉ DE FABRICATION DE PRODUIT EXPANSÉ MOULÉ PAR INJECTION
Abstract:
(EN) A method and apparatus for injection molding a foamed product. A short shot of formable resin is injected into a cavity (124) defined by respective inner surfaces (134,136) of a plurality of molding plates (120,122) at an amount less than a volume of the cavity (124), the resin comprising a chemical foaming agent. The injected resin is allowed to foam for a predetermined period of time, during which the injected foamable resin foams and expands to substantially fill the cavity (124) and a portion of an outer surface of the foamable resin contacts the respective inner surfaces (134,136) of the molding plates (120,122). Pressurized gas is injected into the cavity (124) after the predetermined time has elapsed to urge the skinned outer surface of the foamed resin against the inner surfaces (134,136) of the molding plates (120,122).
(FR) L'invention concerne un procédé et un appareil permettant de mouler par injection un produit en mousse. Une courte injection de résine expansible est injectée dans une cavité (124) définie par les surfaces internes respectives (134,136) d'une pluralité de plaques de moulage (120,122) à une quantité inférieure à un volume de la cavité (124).La résine comprend un agent d'expansion chimique. La résine injectée est autorisée à produire de la mousse pour une période de temps prédéterminée, au cours duquel la résine expansible injectée mousse et se dilate pour remplir sensiblement la cavité (124) et une partie d'une surface extérieure de la résine expansible entre en contact avec les surfaces internes respectives (134,136) des plaques de moulage (120,122). Un gaz sous pression est injecté dans la cavité (124) après que le temps prédéterminé se soit écoulé pour pousser la surface externe pelée de la résine expansée contre les surfaces internes (134,136) des plaques de moulage (120,122).
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, 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, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, 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, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, 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, RS, 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)