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1. (WO1997016295) PROCESS FOR PRODUCING SANDWICH-LIKE SYNTHETIC RESIN MOLDED ARTICLE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/016295 International Application No.: PCT/JP1996/003225
Publication Date: 09.05.1997 International Filing Date: 05.11.1996
Chapter 2 Demand Filed: 16.05.1997
IPC:
B29C 45/16 (2006.01) ,B29C 45/77 (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
16
Making multilayered or multicoloured 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
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
76
Measuring, controlling or regulating
77
of velocity or pressure of moulding material
Applicants:
HONDA GIKEN KOGYO KABUSHIKI KAISHA [JP/JP]; 1-1, Minami Aoyama 2-chome Minato-ku Tokyo 107, JP (AllExceptUS)
TAKEUCHI, Atsushi [JP/JP]; JP (UsOnly)
Inventors:
TAKEUCHI, Atsushi; JP
Agent:
OCHIAI, Takeshi ; Nomura Fudosan Shinbashi 5-chome Building 9-1, Shinbashi 5-chome Minato-ku Tokyo 105, JP
Priority Data:
7/28620402.11.1995JP
Title (EN) PROCESS FOR PRODUCING SANDWICH-LIKE SYNTHETIC RESIN MOLDED ARTICLE
(FR) PROCEDE DE FABRICATION D'UN ARTICLE MOULE EN RESINE SYNTHETIQUE DE TYPE SANDWICH
Abstract:
(EN) A high quality sandwich-like synthetic resin molded article comprising a core and an outer layer covering the core is produced by a method comprising the first step of injecting an outer layer forming material into a cavity of a mold at an injection speed V1 through a gate; the second step of injecting a core forming material, while the outer layer forming material is being injected, at an injection speed V2 higher than the injection speed V1 into the gate and the outer layer forming material inside the cavity so as to allow the outer layer forming material and the core forming material to flow inside the cavity; and the third step of injecting the outer layer forming material at an injection speed V3 lower than the final injection speed of the outer layer forming material at the second step and extruding the outer layer- and core-forming materials of a double structure existing inside the gate into the cavity to thereby form the core and the outer layer.
(FR) On fabrique un article moulé en résine synthétique de type sandwich, constitué d'un noyau et d'une couche externe recouvrant ledit noyau au moyen d'un procédé qui consiste, premièrement, à injecter une matière destinée à former la couche externe à l'intérieur de la cavité d'un moule, à une vitesse d'injection V1, à travers une entrée, deuxièmement à injecter, parallèlement au processus d'injection de la matière destinée à former la couche externe, une matière destinée à former le noyau à une vitesse V2 supérieure à la vitesse d'injection V1, dans l'entrée et la matière destinée à former la couche externe se trouvant à l'intérieur de la cavité, de manière à permettre à la matière destinée à former la couche externe et à la matière destinée à former le noyau de s'écouler à l'intérieur de la cavité, et troisièmement, à injecter la matière destinée à former la couche externe à une vitesse d'injection V3 inférieure à la vitesse d'injection finale de la matière destinée à former la couche externe au cours de la deuxième étape et à extruder les matières de formation du noyau et de la couche externe d'une double structure existant au sein de l'entrée vers l'intérieur de la cavité de façon à constituer le noyau et la couche externe.
Designated States: US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
EP0865894US6030567