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1. (WO2007006327) COUNTER-ROTATING TWIN SCREW EXTRUDER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/006327 International Application No.: PCT/EP2005/007555
Publication Date: 18.01.2007 International Filing Date: 12.07.2005
Chapter 2 Demand Filed: 24.04.2007
IPC:
B29B 7/46 (2006.01) ,B29C 47/38 (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
46
with more than one shaft
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
08
Component parts, details or accessories; Auxiliary operations
36
Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
38
using screws
Applicants:
BOREALIS TECHNOLOGY OY [FI/FI]; P.O. Box 330 FI-06101 Porvoo, FI (AllExceptUS)
JAPAN STEEL WORKS LTD. [JP/JP]; Hiroshima Plant 6-1, Funakoshi-Minami, I-Chome Aki-Ku, Hiroshima City, JP (AllExceptUS)
EK, Carl-Gustaf [SE/SE]; SE (UsOnly)
ÄÄRILÄ, Jari [FI/FI]; FI (UsOnly)
SYRE, Arne [NO/NO]; NO (UsOnly)
INOUE, Shigeki [JP/JP]; JP (UsOnly)
IWAI, Junichi [JP/JP]; JP (UsOnly)
YAMAZAWA, Takayuki [JP/JP]; JP (UsOnly)
MIZUTANI, Yutaka [JP/JP]; JP (UsOnly)
Inventors:
EK, Carl-Gustaf; SE
ÄÄRILÄ, Jari; FI
SYRE, Arne; NO
INOUE, Shigeki; JP
IWAI, Junichi; JP
YAMAZAWA, Takayuki; JP
MIZUTANI, Yutaka; JP
Agent:
KADOR & PARTNER; Corneliusstrasse 15 80469 Munich, DE
Priority Data:
Title (EN) COUNTER-ROTATING TWIN SCREW EXTRUDER
(FR) EXTRUDEUSE DE VIS DOUBLE DANS LE SENS ANTI-HORAIRE
Abstract:
(EN) A screw extruder having a body forming a chamber (2) of two barrels housing two counter-rotating axis-parallel rotors (5, 6) , a supply port (7) for the material to be mixed in the chamber at one end of the body, a discharge port (8) for discharging the mixed material at the other end of the body, a conveying section (34) with screws for feeding the material from the supply port (7) downstream to a mixing section (44) which comprises at least two mixing zones (45, 46) , each mixing zone having at least one forward-conveying wing (14, 15) and at least one backward-conveying (17, 18) wing downstream of the forward-conveying wing on each rotor characterized in that a throttle valve (40) is provided in the chamber downstream of the mixing section (44) , and downstream of the throttle valve (40) a second conveying section (47) with screws and a second mixing section are provided.
(FR) La présente invention concerne un extrudeuse de vis possédant un corps formant une chambre (2) de deux fourreaux accueillant deux rotors parallèles à l'axe de rotation anti-horaire (5, 6), un orifice d'alimentation (7) destiné au matériau à mélanger dans cette chambre à une extrémité du corps, un orifice d'évacuation (8) destiné à évacuer le matériau mélangé à l'autre extrémité du corps, une partie transport (34) avec des vis destinée à alimenter le matériau en provenance de l'orifice d'alimentation (7) en aval d'une partie mélange (44) qui comprend au moins deux zones de mélange (45, 46), chaque zone de mélange possédant au moins une aile de transport vers l'avant (14, 15) et au moins une aile de transport vers l'arrière (17, 18) en aval de l'aile de transport vers l'avant sur chaque rotor, caractérisée en ce qu'un clapet d'étranglement (40) est prévu dans la chambre en aval de la partie de mélange (44), et en aval de ce clapet d'étranglement (40) une deuxième partie de transport (47) avec des vis et une deuxième partie mélange.
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
JP2009501092US20090213681CN101247932AU2005334397IN148/KOLNP/2008