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1. (WO2013121450) IMPROVEMENTS IN THE MANUFACTURING OF STACKS OF MULTIPLAYER PLASTIC LAMINATES FOR PRINTED CIRCUITS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2013/121450 International Application No.: PCT/IT2012/000066
Publication Date: 22.08.2013 International Filing Date: 09.03.2012
IPC:
H05K 3/02 (2006.01) ,B32B 31/20 ,B32B 31/00
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
K
PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
3
Apparatus or processes for manufacturing printed circuits
02
in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
31
Making layered products
14
characterised by treatment of assembled layers
16
mechanically
20
by pressing, with or without heat
(Deprecated)
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
31
Making layered products
Applicants: CERASO, Bruno[IT/IT]; IT (UsOnly)
CEDAL EQUIPMENT SRL[IT/IT]; Via Cascina Mojetta, 38 I-20148 Milano (MI), IT (AllExceptUS)
Inventors: CERASO, Bruno; IT
Agent: GUELLA, Paolo dell'Ufficio; Brevetti Dott. Ing. Digiovanni Schmiedt S.r.l. Via Aldrovandi, 7 I-20129 Milano (MI), IT
Priority Data:
MI2012A00019413.02.2012IT
Title (EN) IMPROVEMENTS IN THE MANUFACTURING OF STACKS OF MULTIPLAYER PLASTIC LAMINATES FOR PRINTED CIRCUITS
(FR) AMÉLIORATIONS DANS LA FABRICATION DE PILES DE STRATIFIÉS EN MATIÈRE PLASTIQUE MULTICOUCHE POUR CIRCUITS IMPRIMÉS
Abstract:
(EN) In manufacturing multilayer plastic laminates for printed circuits, a press with two surfaces exerts pressure under vacuum on a stack of laminates, the packs, alternated with separator plates made of anodized aluminum. The packs include prepreg layers. The metalizations present on the two sides of each pack are portions of a copper strip repeatedly folded 180° around each pack and each separator plate. A strong current circulates in the copper strip which heats the strip with resistive behavior: the heat causes the close fixing of the various layers. An auxiliary heater is applied to each surface of the press by means of an interposed insulating plate. This comprises an aluminum plate with equidistant longitudinal holes containing the same number of armored candle-like resistors, connected in parallel. A main power supply provides direct current to the copper strip, two secondary power supplies provide alternating current to the two auxiliary heaters. A PLC is connected to three thermal probes, respectively present at the center of the stack and in the two auxiliary heaters. The PLC assisted by a PC controls the three power supplies in order to increase the measured temperatures according to a pre-established gradualness, consequently obtaining about the same temperature in all the packs of the stack.
(FR) En fabriquant des stratifiés en plastique pour les circuits imprimés multicouche, une presse avec deux surfaces exerce une pression sous vide sur une pile de stratifiés, les paquets, alternent avec des plaques de séparation constituées d'aluminium anodisé. Ces paquets comprennent des couches de pré-imprégné. Les métallisations présentes sur les deux côtés de chaque paquet sont des parties de bande de cuivre pliées à plusieurs reprises à 180° autour de chaque paquet et de chaque plaque de séparation. Un courant fort circule dans la bande de cuivre qui chauffe la bande avec un comportement résistif : la chaleur fixe solidement les différentes couches. Un dispositif de chauffage auxiliaire est appliqué sur chaque surface de la presse au moyen d'interposition d'une plaque isolante. Ce dispositif comprend une plaque d'aluminium avec des trous longitudinaux équidistants contenant le même nombre de résistances, similaires à une bougie blindée connectées en parallèle. Une alimentation électrique principale fournit un courant continu sur la bande de cuivre, deux alimentations secondaires fournissent un courant alternatif pour les deux dispositifs de chauffage auxiliaire. Un contrôleur logique programmable (PLC) est relié à trois sondes thermiques respectivement présentes au niveau du centre de l'empilement et dans les deux dispositifs de chauffage auxiliaire. Le PLC assisté par un PC commande les trois alimentations électriques selon une gradualité préétablie, obtenant ainsi environ la même température dans tous les paquets de la pile.
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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, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, 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, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AL, 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, RS, 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: English (EN)
Filing Language: English (EN)