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1. (WO1998052736) SCREW AND APPARATUS FOR PLASTICIZING FIBER-REINFORCED THERMOPLASTIC RESINS, AND METHOD AND PRODUCT OF MOLDING THE RESINS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/052736 International Application No.: PCT/JP1998/002265
Publication Date: 26.11.1998 International Filing Date: 22.05.1998
IPC:
B29B 7/42 (2006.01) ,B29C 45/00 (2006.01) ,B29C 45/60 (2006.01) ,B29C 47/00 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B
PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7
Mixing; Kneading
30
continuous, with mechanical mixing or kneading devices
34
with movable mixing or kneading devices
38
rotary
40
with single shaft
42
with screw or helix
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
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
46
Means for plasticising or homogenising the moulding material or forcing it into the mould
58
Details
60
Screws
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
47
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
Applicants:
KAWASAKI STEEL CORPORATION [JP/JP]; 1-28, Kitahonmachi-Dori 1-chome Chuo-ku Kobe-shi Hyogo 651-0075, JP (AllExceptUS)
HITACHI METALS, LTD. [JP/JP]; 1-2, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8351, JP (AllExceptUS)
UEHARA, Kenichi [JP/JP]; JP (UsOnly)
TAKANO, Shigeru [JP/JP]; JP (UsOnly)
ASANO, Yoshikazu [JP/JP]; JP (UsOnly)
AMANO, Masanori [JP/JP]; JP (UsOnly)
Inventors:
UEHARA, Kenichi; JP
TAKANO, Shigeru; JP
ASANO, Yoshikazu; JP
AMANO, Masanori; JP
Agent:
WATANABE, Mochitoshi ; Hayakawa-tonakai Building, 3F 12-5, Iwamoto-cho 2-chome Chiyoda-ku Tokyo 101-0032, JP
Priority Data:
10/12479907.05.1998JP
9/13191922.05.1997JP
Title (EN) SCREW AND APPARATUS FOR PLASTICIZING FIBER-REINFORCED THERMOPLASTIC RESINS, AND METHOD AND PRODUCT OF MOLDING THE RESINS
(FR) VIS ET DISPOSITIF SERVANT A PLASTIFIER DES RESINES THERMOPLASTIQUES RENFORCEES DE FIBRES, PROCEDE ET PRODUIT DE MOULAGE DE CES RESINES
Abstract:
(EN) A screw suitable for use in plasticization of fiber-reinforced thermoplastic resins, whose screw lead length (the advancing distance of resin in the axial direction per turn of the screw, provided that the resin fills the screw groove wholly) in the compressing part of the screw is gradually decreased toward the tip of the screw; a plasticizing apparatus fitted with this screw; a method for molding fiber-reinforced thermoplastic resins with this apparatus; and a product of molding fiber-reinforced thermoplastic resins by this method. As sufficient shearing force is obtained, the product is free from clamping and, as reinforcing fibers are not broken, fibers remaining in the molded product are longer than otherwise and excellent in mechanical characteristics. The product is highly suitable as a material for automotive parts and the like.
(FR) Vis conçue pour être utilisée pour la plastification de résines thermoplastiques renforcées de fibres et dont la longueur d'avance (la distance d'avance de la résine dans le sens axial par tour de vis, à condition que la résine remplisse totalement la gorge de la vis) dans la partie compression de la vis est diminuée progressivement vers la pointe de la vis; dispositif de plastification équipé de cette vis; procédé de moulage de résines thermoplastiques renforcées au moyen de ce dispositif; produit obtenu par le moulage de résines thermoplastiques renforcées de fibres au moyen de ce procédé. Etant donné qu'on obtient une force de cisaillement suffisante, le produit est exempt de serrage, et les fibres de renforcement n'étant pas cassées, les fibres restant dans le produit moulé sont plus longues qu'habituellement et présentent des caractéristiques mécaniques excellentes. Ce produit est tout à fait approprié en tant que matériau de pièces, telles que des pièces automobiles.
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Designated States: CA, MX, US
European Patent Office (DE, ES, FR, GB, IT, NL)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
MXPA/a/1999/000841EP0920971US6228308CA2261584