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1. WO2002055282 - FORMING DEVICE FOR THERMOPLASTIC RESIN FORMED PART

Publication Number WO/2002/055282
Publication Date 18.07.2002
International Application No. PCT/JP2002/000051
International Filing Date 09.01.2002
IPC
B29C 45/60 2006.1
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
46Means for plasticising or homogenising the moulding material or forcing it into the mould
58Details
60Screws
CPC
B29C 2045/1722
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
1722injecting fluids containing plastic material
B29C 45/60
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
46Means for plasticising or homogenising the moulding material or forcing it into the mould
58Details
60Screws
Y10S 425/228
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
425Plastic article or earthenware shaping or treating: apparatus
228Injection plunger or ram: transfer molding type
Applicants
  • SEKISUI CHEMICAL CO., LTD. [JP]/[JP] (AllExceptUS)
  • SHIMURA, Satoshi [JP]/[JP] (UsOnly)
  • KAWAUCHI, Hitoshi [JP]/[JP] (UsOnly)
  • HIRANO, Hiroyuki [JP]/[JP] (UsOnly)
Inventors
  • SHIMURA, Satoshi
  • KAWAUCHI, Hitoshi
  • HIRANO, Hiroyuki
Agents
  • KISHIMOTO, Einosuke
Priority Data
2001-378011.01.2001JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) FORMING DEVICE FOR THERMOPLASTIC RESIN FORMED PART
(FR) DISPOSITIF DE FORMATION POUR PIECE FORMEE EN RESINE THERMOPLASTIQUE
Abstract
(EN) A forming device capable of providing a gas impregnating process while holding the overall length of a screw at such a length that the cylinder of an existing forming machine can be used for the screw without modification, comprising the screw (3) used in the gas impregnating process having a molten resin part (C) positioned on the upstream side thereof and used to bring resin into molten state, a molten resin unfilled part (E) continued to the downstream side of the molten resin part (C) and used to reduce a resin pressure less than the inert gas pressure at a gas feed port (5), and a gas impregnating part (D) continued to the downstream side of the molten resin unfilled part (E) and used to impregnate the molten resin with inert gas fed thereto.
(FR) Cette invention se rapporte à un dispositif de formation capable de produire une opération d'imprégnation au gaz, tout en maintenant la longueur totale d'une vis à une dimension telle que le cylindre d'une machine de formage existante peut être utilisée pour la vis sans aucune modification. A cet effet, ce dispositif comprend la vis (3) utilisée dans l'opération d'imprégnation au gaz, cette vis comprenant une partie en résine moulée (C) placée sur son côté amont et servant à amener la résine à l'état fondu, une partie non remplie de résine moulée (E) se prolongeant jusqu'au côté aval de la partie en résine moulée (C) et servant à réduire la pression de la résine jusqu'à un niveau inférieur à la pression du gaz inerte au niveau d'un orifice d'amenée de gaz (5), et une partie d'imprégnation au gaz (D) se prolongeant jusqu'au côté aval de la partie non remplie de résine moulée (E) et servant à imprégner la résine moulée du gaz inerte amené jusqu'à elle.
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