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1. WO2002060670 - PROCEDE PERMETTANT DE FAIRE CIRCULER DES FLUIDES SOUS PRESSION DE MANIERE A AMELIORER LE REFROIDISSEMENT PAR CANAL DE GAZ

Numéro de publication WO/2002/060670
Date de publication 08.08.2002
N° de la demande internationale PCT/US2001/044593
Date du dépôt international 05.11.2001
CIB
B29C 45/17 2006.1
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
29TRAVAIL DES MATIÈRES PLASTIQUES; TRAVAIL DES SUBSTANCES À L'ÉTAT PLASTIQUE EN GÉNÉRAL
CFAÇONNAGE OU ASSEMBLAGE DES MATIÈRES PLASTIQUES; FAÇONNAGE DES MATIÈRES À L'ÉTAT PLASTIQUE NON PRÉVU AILLEURS; POST-TRAITEMENT DES PRODUITS FAÇONNÉS, p.ex. RÉPARATION
45Moulage par injection, c. à d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule fermé; Appareils à cet effet
17Eléments constitutifs, détails ou accessoires; Opérations auxiliaires
CPC
B29C 2045/1709
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
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17Component parts, details or accessories; Auxiliary operations
1703Introducing an auxiliary fluid into the mould
1704the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
1706using particular fluids or fluid generating substances
1709using a cooling fluid
B29C 2045/1726
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
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17Component parts, details or accessories; Auxiliary operations
1703Introducing an auxiliary fluid into the mould
1704the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
1726moving the fluid through the hollow using a fluid inlet and a fluid outlet
B29C 2045/1729
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
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17Component parts, details or accessories; Auxiliary operations
1703Introducing an auxiliary fluid into the mould
1704the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
1729fluid venting means
B29C 45/1704
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
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17Component parts, details or accessories; Auxiliary operations
1703Introducing an auxiliary fluid into the mould
1704the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
Déposants
  • INFILTRATOR SYSTEMS, INC. [US]/[US]
Inventeurs
  • SWISTAK, Daniel, J.
  • MOORE, Roy, E., Jr.
  • BROCHU, Ronald
Mandataires
  • CURBELO, Pamela, J.
Données relatives à la priorité
60/250,91401.12.2000US
Langue de publication Anglais (en)
Langue de dépôt anglais (EN)
États désignés
Titre
(EN) METHOD FOR CIRCULATING PRESSURIZED FLUIDS TO IMPROVE GAS CHANNEL COOLING
(FR) PROCEDE PERMETTANT DE FAIRE CIRCULER DES FLUIDES SOUS PRESSION DE MANIERE A AMELIORER LE REFROIDISSEMENT PAR CANAL DE GAZ
Abrégé
(EN) A method for manufacturing a molded article comprises injecting a quantity of molding material sufficient for the preparation of the molded article into a cavity (22) of a mold, injecting a first portion of fluid into the mold cavity (22), creating a gas channel (25) within the molding material, and forming the molded article within the mold activity. At least a portion of the first portion of fluid is exhausted through a gas port (26), a second portion of fluid is injected into the mold material, and the molded article is cooled within the mold cavity to a temperature beneath a softening point of the molding material.
(FR) La présente invention concerne un procédé de fabrication d'un article moulé. Ledit procédé consiste à injecter une quantité de matière de moulage suffisante pour la préparation de l'article moulé dans une cavité (22) d'un moule, à injecter une première partie de fluide dans la cavité du moule (22), à créer un canal de gaz (25) dans la matière de moulage, et à former l'article moulé dans la cavité du moule. Au moins une partie de la première partie de fluide est évacuée à travers un évent (26), une seconde partie de fluide est injectée dans la matière de moulage et l'article moulé est refroidit dans la cavité du moule à une température inférieure à un point de ramollissement de la matière de moulage.
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