ES2074199T3 - Procedimiento y dispositivo para la extrusion de placas de camara hueca de materia sintetica termoplastica. - Google Patents

Procedimiento y dispositivo para la extrusion de placas de camara hueca de materia sintetica termoplastica.

Info

Publication number
ES2074199T3
ES2074199T3 ES91117894T ES91117894T ES2074199T3 ES 2074199 T3 ES2074199 T3 ES 2074199T3 ES 91117894 T ES91117894 T ES 91117894T ES 91117894 T ES91117894 T ES 91117894T ES 2074199 T3 ES2074199 T3 ES 2074199T3
Authority
ES
Spain
Prior art keywords
webs
extrusion
procedure
hollow chamber
synthetic thermoplastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES91117894T
Other languages
English (en)
Inventor
Heinz Dr-Ing Gross
Andreas Fetzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roehm GmbH Darmstadt
Original Assignee
Roehm GmbH Darmstadt
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roehm GmbH Darmstadt filed Critical Roehm GmbH Darmstadt
Application granted granted Critical
Publication of ES2074199T3 publication Critical patent/ES2074199T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
    • B29C48/0014—Extrusion moulding in several steps, i.e. components merging outside the die producing flat articles having components brought in contact outside the extrusion die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/302—Extrusion nozzles or dies being adjustable, i.e. having adjustable exit sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/31—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections
    • B29C48/313—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections by positioning the die lips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/35—Extrusion nozzles or dies with rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

UNA PLACA DE CAMARA HUECA QUE CONTIENE DOS PAREDES PLANAS ALISADAS UNILATERALES O BILATERALES, Y ESTOS MALLETES COMBINADOS SE OBTIENEN MEDIANTE EXTRUSION DE DOS DE LA PAREDES EXTERIORES DE LOS CARRILES CONSTRUIDOS DE MATERIAL TERMOPLASTICO DE DOS SOPORTES INTERMEDIOS CALENTADOS A UNA TEMPERATURA EN CAMPO DE CONSTITUCION TERMOPLASTICO, ESPECIALMENTE PARA CINTA SIN FIN TRANSCURRIDA CON UNA SUPERFICIE ALISADA, Y EXTRUSION SIMULTANEA DE UNA MAYORIA DE BRAZOS EN FORMA DE RAMALES DE MATERIAL TERMOPLASTICO. LOS CANTOS DE LOS BRAZOS SON TRANSPORTADOS EN ESTADO DE CORRIENTE DE FUSION CON AMBOS CARRILES PEGADOS A LOS SOPORTES INTERMEDIOS CALENTADOS EN TANGENCIA Y SOLDADOS CON ESTOS A UNA PLACA DE CAMARA HUECA. FINALMENTE, EL RAMAL DE LA CAMARA HUECA ES ENFRIADO BAJO LA TEMPERATURA DE REBLANDECIMIENTO Y RELEVADOS DEL SOPORTE INTERMEDIO.
ES91117894T 1990-10-30 1991-10-21 Procedimiento y dispositivo para la extrusion de placas de camara hueca de materia sintetica termoplastica. Expired - Lifetime ES2074199T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9014968U DE9014968U1 (de) 1990-10-30 1990-10-30 Vorrichtung zur Extrusion von Hohlkammerplatten aus thermoplastischem Kunststoff

Publications (1)

Publication Number Publication Date
ES2074199T3 true ES2074199T3 (es) 1995-09-01

Family

ID=6858883

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91117894T Expired - Lifetime ES2074199T3 (es) 1990-10-30 1991-10-21 Procedimiento y dispositivo para la extrusion de placas de camara hueca de materia sintetica termoplastica.

Country Status (5)

Country Link
EP (1) EP0484721B1 (es)
AT (1) ATE121988T1 (es)
DE (2) DE9014968U1 (es)
DK (1) DK0484721T3 (es)
ES (1) ES2074199T3 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4226837A1 (de) * 1992-04-22 1994-02-17 Schnause Rolf Dipl Ing Anlage zur Herstellung von Platten aus Thermoplast- und Papierabfällen
DE19543324A1 (de) * 1995-11-21 1997-05-22 Bayer Ag Vorrichtung und Verfahren zur Herstellung von Kunststoff-/Metall-Verbundplatten
US6109592A (en) * 1997-06-16 2000-08-29 Extrusion Dies, Inc. Flow control device and apparatus for mounting same
US6206680B1 (en) 1998-03-17 2001-03-27 Extrusion Dies, Inc. Extrusion die membrane
US6367776B1 (en) 1999-04-21 2002-04-09 Extrusion Dies, Inc. Flow control device and apparatus for mounting same
US6352424B1 (en) 1999-12-30 2002-03-05 Extrusion Dies, Inc. Extrusion die membrane assembly
DE10331670A1 (de) * 2003-07-14 2005-03-03 Bayer Materialscience Ag Mehrschichtiges Erzeugnis mit verbesserter Erkennbarkeit der coextrudierten Seite
DE102007011461A1 (de) 2007-03-07 2008-09-11 Breyer Gmbh Maschinenfabrik Extrusionsdüse zur Herstellung von Hohlkammerprofilen
DE102007011396A1 (de) 2007-03-07 2008-09-11 Breyer Gmbh Maschinenfabrik Verfahren und Einrichtung zur Herstellung von Hohlkammerprofilen
US9085104B2 (en) 2011-07-20 2015-07-21 Nordson Corporation Sculpted extrusion die
WO2024214124A1 (en) * 2023-04-14 2024-10-17 Omipa S.P.A. Device for stabilising extruded products

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235439A (en) * 1959-05-04 1966-02-15 Union Carbide Corp Ribbed structural board
FR1489312A (es) * 1965-08-06 1967-11-17
JPS4829768B1 (es) * 1970-03-16 1973-09-13
US3764245A (en) * 1971-05-10 1973-10-09 F Miyamoto Apparatus for producing light structural board of thermoplastic resin
FR2142752A1 (en) * 1971-06-24 1973-02-02 Aquitaine Total Organico Partially corrugated board mfr - by continuous extrusion of plastic material through a novel die
IT1075216B (it) * 1975-12-02 1985-04-22 Polycarton Bv Perfezionamento nei materiali laminati in particolare per recipienti per liquidi
DE2639512C3 (de) * 1976-09-02 1984-07-19 Reifenhäuser KG, 5210 Troisdorf Vorrichtung zum Herstellen eines dicken Tafelstranges aus thermoplastischem Kunststoff
DE3223344C2 (de) * 1982-06-23 1995-07-06 Ensinger Wilfried Vorrichtung zur Herstellung eines Verbundprofils
DE3526752A1 (de) * 1985-07-26 1987-01-29 Roehm Gmbh Verfahren zur herstellung einer hohlkammerplatte aus kunststoff

Also Published As

Publication number Publication date
DE9014968U1 (de) 1992-02-27
ATE121988T1 (de) 1995-05-15
EP0484721B1 (de) 1995-05-03
EP0484721A3 (en) 1992-05-20
DK0484721T3 (da) 1995-07-17
EP0484721A2 (de) 1992-05-13
DE59105380D1 (de) 1995-06-08

Similar Documents

Publication Publication Date Title
US4267223A (en) Corrugated plasticboard
ES2074199T3 (es) Procedimiento y dispositivo para la extrusion de placas de camara hueca de materia sintetica termoplastica.
DK0461488T3 (da) Fremgangsmåde til fremstilling af glatte ekstruderede fuldplader eller folier af termoplastisk formstof
US4132581A (en) Method for the fabrication of plasticboard
ES529005A0 (es) Procedimiento para la fabricacion de panales higienicos en ciclos continuo.
AU3868899A (en) Method for forming apertured laminate web
JPH0626852B2 (ja) デボス／多孔化熱可塑性フイルムのウエブの高速製造法
FR2704179B1 (fr) Materiau plan composite comportant un film perfore et des fibres thermoplastiques, utilisation et procede de fabrication.
BR7901535A (pt) Meios para orientacao continua e transferencia de uma tela continua de material termoplastico,meios para a formacao de interface de uma tela continua,meios para a fabricacao continua de artigos termoplasticos moldados,processo de formacao de produtos orientados biaxialmente de material termoplastico,processo continuo para a fabricacao de artigos termoplasticos moldados e processo de orientacao rapida e continua de uma tela extrudada
US2614288A (en) Apparatus and method for producing thermoplastic fibers
IE43788L (en) Sealing tubular plastics webs
IT8320131A0 (it) Gruppo elettrotermico, per il riscaldamento controllato di cilindri di estrusori e di presse ad iniezione per materie plastiche, trafilatrici per gomma ed apparecchi similari, provvisto didue intercapedini coassiali, per la circolazione di aria di ventilazione.
ES290734Y (es) Hilera multicapa perfeccionada para la produccion de peliculas, hojas o placas de materia plastica multicolor.
ES2125917T3 (es) Procedimiento para la fabricacion de un elemento constructivo para sistemas intercambiadores de calor, sistemas intercambiadores de material y/o sistemas biorreactores y dispositivo para la realizacion del procedimiento.
US4188253A (en) Machine for the fabrication of plasticboard
US4661186A (en) Process and apparatus for joining protective plastic films to an extruded plastic sheet, with the aid of an auxiliary plastic film
US4713134A (en) Double belt bonding of fibrous web comprising thermoplastic fibers on steam cans
JPS56159039A (en) Manufacture of transparent television screen
US3849050A (en) Apparatus for embossing plastic material
DE1504481C3 (de) Verfahren und Vorrichtung zur Herstellung biaxial verstreckter Flachfolien aus thermoplastischem Kunststoff
ATE19995T1 (de) Apparat zum querstrecken einer folie aus kunststoff.
EP0281339A3 (en) A process for laminating a thermoplastic resin film onto a metal sheet
GB2051663B (en) Process for producing extruded rigid thermoplastic sheet having optically smooth surfaces
KR940018202A (ko) 열수축 부재의 모서리 제조방법 및 장치
JPS648041A (en) Manufacture of conductive sheet

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 484721

Country of ref document: ES