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Machine translation
1. (WO2005062315) PROCESS FOR MANUFACTURING A SELF-EXTINGUISHING CABLE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2005/062315    International Application No.:    PCT/IT2003/000855
Publication Date: 07.07.2005 International Filing Date: 24.12.2003
IPC:
B29C 44/32 (2006.01)
Applicants: PRYSMIAN CAVI E SISTEMI ENERGIA S.R.L. [IT/IT]; Viale Sarca, 222, I-20126 Milano (IT) (For All Designated States Except US).
GRASSELLI, Gianbattista [IT/IT]; (IT) (For US Only).
BAREGGI, Alberto [IT/IT]; (IT) (For US Only).
SCELZA, Cristiana [IT/IT]; (IT) (For US Only).
FRIGERIO, Marco [IT/IT]; (IT) (For US Only).
VEGGETTI, Paolo [IT/IT]; (IT) (For US Only).
BELLI, Sergio [IT/IT]; (IT) (For US Only)
Inventors: GRASSELLI, Gianbattista; (IT).
BAREGGI, Alberto; (IT).
SCELZA, Cristiana; (IT).
FRIGERIO, Marco; (IT).
VEGGETTI, Paolo; (IT).
BELLI, Sergio; (IT)
Agent: CHECCACCI, Giorgio; Porta, Checcacci & Associati S.p.A., Via Trebbia, 20, I-20135 Milano (IT)
Priority Data:
Title (EN) PROCESS FOR MANUFACTURING A SELF-EXTINGUISHING CABLE
(FR) PROCÉDÉ DE FABRICATION DE CÂBLE AUTOEXTINGUIBLE
Abstract: front page image
(EN)The invention relates to a process for manufacturing a self-extinguishing cable comprising at least one transmissive element and at least one flame-retardant coating in a position radially external to said at least one transmissive element, wherein said at least one coating includes an expanded flame-retardant polymeric material comprising:(a) at least one expandable polymer; (b) at least one expanding agent; (c) at least one flame-retardant inorganic filler, in an amount of from 100 parts by weight to 250 parts by weight with respect to 100 parts by weight of said at least one expandable polymer; the process comprising the following steps: (i) feeding the flame-retardant polymeric material to an extruding apparatus, therein melting and mixing it; (ii) passing the flame-retardant polymeric material obtained in step (i) through at least one static mixer; (iii) depositing by extrusion the flame-retardant polymeric material obtained in step (ii) onto said at least one transmissive element conveyed to said extruding apparatus. The process of the invention allows to optimise the homogeneity and to maximize the expansion of said flame­retardant polymeric material. The cable so obtained is provided with both good mechanical and flame-retardant properties.
(FR)L'invention concerne un procédé de fabrication d'un câble autoextinguible qui comprend au moins un élément transmissif et au moins un revêtement ignifugé appliqué sur la partie radialement extérieure dudit élément transmissif, ledit revêtement contenant un matériau polymère ignifugé expansé qui renferme:(a) au moins un polymère expansé; (b) au moins un agent gonflant; (c) au moins une charge inorganique ignifugée, dans des proportions comprises entre 100 et 250 parties en poids par rapport à 100 parties en poids dudit polymère expansif. Ledit procédé consiste à: (a) introduire le matériau polymère ignifugé dans une extrudeuse, à des fins de fonte et de mélange; (b) passer le matériau polymère ignifugé obtenu en (a) dans au moins un mélangeur statique; et enfin, (c) déposer par extrusion le matériau polymère ignifugé obtenu en (b) sur ledit élément transmissif transféré à ladite extrudeuse. Le procédé de l'invention permet d'optimiser l'homogénéité dudit matériau polymère ignifugé et de maximiser son expansion. Il permet en outre d'obtenir un câble qui possède de bonnes propriétés mécaniques et d'ignifugation.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, 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, IT, LU, MC, NL, 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)