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1. (WO2010072955) ANNULAR EXTRUSION HEAD
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/072955 International Application No.: PCT/FR2009/052614
Publication Date: 01.07.2010 International Filing Date: 18.12.2009
IPC:
B29C 47/20 (2006.01) ,B29C 47/70 (2006.01) ,B29C 47/36 (2006.01) ,B29C 47/28 (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
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
12
Extrusion nozzles or dies
20
with annular opening, e.g. for tubular 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
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
58
Details
70
Flow dividers
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
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
12
Extrusion nozzles or dies
20
with annular opening, e.g. for tubular articles
28
Cross-head annular extrusion nozzles
Applicants:
TECHNIP FRANCE [FR/FR]; 6-8, Allée de l'Arche Faubourg de l'Arche- ZAC Danton F-92400 Courbevoie, FR (AllExceptUS)
DEMANZE, Frédéric [FR/FR]; FR (UsOnly)
GUIGNON, Mickael [FR/FR]; FR (UsOnly)
Inventors:
DEMANZE, Frédéric; FR
GUIGNON, Mickael; FR
Agent:
RIPAULT, Damien; c/o S.A FEDIT-LORIOT 38, avenue Hoche F-75008 Paris, FR
Priority Data:
080742823.12.2008FR
Title (EN) ANNULAR EXTRUSION HEAD
(FR) TETE D'EXTRUSION ANNULAIRE
Abstract:
(EN) The invention relates to an extrusion head (10) including a cylinder (18) and a mandrel (12), said cylinder coaxially covering said mandrel so as to form an annular chamber (20), said annular chamber having an upstream portion (22) and, opposite said portion, a downstream portion (24) extended by a pair of circular lips (26), said extrusion head (10) including an inlet opening (34) for injecting said soft plastic material which flows into said upstream portion forming a plurality of flows of soft plastic material, said flows being suitable for joining together so as to preform a sleeve of a soft plastic material. Said head includes at least one dispersion grating (32) extending circumferentially between said mandrel (12) and said cylinder (18), and radially from said mandrel to said cylinder; and said sleeve of soft plastic material is forced through said at least one dispersion grating (32) so as to fragment and disperse said soft plastic material.
(FR) L'invention concerne une tête d'extrusion (10) comprenant un fourreau (18) et un mandrin (12), ledit fourreau coiffant coaxialement ledit mandrin pour former une chambre annulaire (20), ladite chambre annulaire présentant une partie amont (22) et à l'opposé, une partie aval (24) prolongée par une paire de lèvres circulaires (26), ladite tête d'extrusion (10) comprenant une ouverture d'entrée (34), pour injecter ledit matériau plastique ramolli qui s'écoule dans ladite partie amont en formant une pluralité d'écoulements de matériau plastique ramolli, lesdits écoulements étant aptes à se rejoindre de manière à préformer une manche de matériau plastique ramolli. Elle comprend au moins une grille de dispersion (32) s'étendant circonférentiellement entre ledit mandrin (12) et ledit fourreau (18), et radialement, dudit mandrin audit fourreau; et ladite manche de matériau plastique ramolli est entraînée à force à travers ladite au moins une grille de dispersion (32) de manière à fragmenter et disperser ledit matériau plastique ramolli.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, 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, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
GB2478219BRPI0922470FR2940170DKPR 178636DK201170322MYPI 2011002464