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1. US20020083721 - Method for circulating pressurized fluids to improve gas channel cooling

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États-Unis d'Amérique
Numéro de la demande 09683177
Date de la demande 29.11.2001
Numéro de publication 20020083721
Date de publication 04.07.2002
Numéro de délivrance 6680011
Date de délivrance 20.01.2004
Type de publication B2
CIB
B29C 49/66
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
49Moulage par soufflage, c. à d. en soufflant une préforme ou une paraison dans un moule pour obtenir la forme désirée; Appareils à cet effet
42Eléments constitutifs, détails ou accessoires; Opérations auxiliaires
64Chauffage ou refroidissement des préformes, des paraisons ou des objets soufflés
66Refroidissement par introduction d'un réfrigérant dans l'objet soufflé
B29D 23/00
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
29TRAVAIL DES MATIÈRES PLASTIQUES; TRAVAIL DES SUBSTANCES À L'ÉTAT PLASTIQUE EN GÉNÉRAL
DFABRICATION D'OBJETS PARTICULIERS, À PARTIR DE MATIÈRES PLASTIQUES OU DE SUBSTANCES À L'ÉTAT PLASTIQUE
23Fabrication d'objets tubulaires
B29C 45/17
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 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
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
Déposants Infiltrator Systems, Inc.
Inventeurs Moore, Jr., Roy E.
Swistak, Daniel J.
Mandataires Cantor Colburn LLP
Données relatives à la priorité 09683177 29.11.2001 US
60250914 01.12.2000 US
Titre
(EN) Method for circulating pressurized fluids to improve gas channel cooling
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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 of a mold, injecting a first portion of fluid into the mold cavity, creating a gas channel within the molding material, and forming the molded article within the mold cavity. At least a portion of the first portion of fluid is exhausted through a gas port, 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.
Documents de brevet associés
WO/2002/060670
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