IT1282563B1 - Metodo e testa di estrusione per realizzare tubi in materie plastiche aventi scarsa tolleranza alle pressioni di estrusione - Google Patents

Metodo e testa di estrusione per realizzare tubi in materie plastiche aventi scarsa tolleranza alle pressioni di estrusione

Info

Publication number
IT1282563B1
IT1282563B1 IT96MI000899A ITMI960899A IT1282563B1 IT 1282563 B1 IT1282563 B1 IT 1282563B1 IT 96MI000899 A IT96MI000899 A IT 96MI000899A IT MI960899 A ITMI960899 A IT MI960899A IT 1282563 B1 IT1282563 B1 IT 1282563B1
Authority
IT
Italy
Prior art keywords
extrusion
plastic pipes
make plastic
poor tolerance
pressures
Prior art date
Application number
IT96MI000899A
Other languages
English (en)
Inventor
Massimo Genoni
Original Assignee
Nupi Spa
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 Nupi Spa filed Critical Nupi Spa
Priority to IT96MI000899A priority Critical patent/IT1282563B1/it
Publication of ITMI960899A0 publication Critical patent/ITMI960899A0/it
Priority to EP97201354A priority patent/EP0806279A1/en
Publication of ITMI960899A1 publication Critical patent/ITMI960899A1/it
Application granted granted Critical
Publication of IT1282563B1 publication Critical patent/IT1282563B1/it

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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
    • B29C48/3366—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die using a die with concentric parts, e.g. rings, cylinders
    • 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
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/14—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
    • B29C48/147—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle
    • B29C48/1472—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle at the die nozzle exit zone
    • 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
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/007—Using fluid under pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
IT96MI000899A 1996-05-07 1996-05-07 Metodo e testa di estrusione per realizzare tubi in materie plastiche aventi scarsa tolleranza alle pressioni di estrusione IT1282563B1 (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT96MI000899A IT1282563B1 (it) 1996-05-07 1996-05-07 Metodo e testa di estrusione per realizzare tubi in materie plastiche aventi scarsa tolleranza alle pressioni di estrusione
EP97201354A EP0806279A1 (en) 1996-05-07 1997-05-06 Extrusion method and head for making pipes of pressure sensitive plastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT96MI000899A IT1282563B1 (it) 1996-05-07 1996-05-07 Metodo e testa di estrusione per realizzare tubi in materie plastiche aventi scarsa tolleranza alle pressioni di estrusione

Publications (3)

Publication Number Publication Date
ITMI960899A0 ITMI960899A0 (it) 1996-05-07
ITMI960899A1 ITMI960899A1 (it) 1997-11-07
IT1282563B1 true IT1282563B1 (it) 1998-03-27

Family

ID=11374211

Family Applications (1)

Application Number Title Priority Date Filing Date
IT96MI000899A IT1282563B1 (it) 1996-05-07 1996-05-07 Metodo e testa di estrusione per realizzare tubi in materie plastiche aventi scarsa tolleranza alle pressioni di estrusione

Country Status (2)

Country Link
EP (1) EP0806279A1 (it)
IT (1) IT1282563B1 (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19959482C2 (de) * 1999-12-10 2002-01-10 Fischer W Mueller Blasformtech Extrusionskopf für das Blasformen von Hohlkörpern aus thermoplastischem Kunststoff

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249875A (en) * 1978-09-15 1981-02-10 Cosden Technology, Inc. Co-extrusion apparatus and method for producing multiple-layered thermoplastic pipe
JPS62267120A (ja) * 1986-05-16 1987-11-19 Showa Denko Kk 多層インフレ−シヨンフイルム製造用ダイ
US5356282A (en) * 1992-01-21 1994-10-18 The Geon Company Blow molding extrustion head
GB9319973D0 (en) * 1993-09-28 1993-11-17 Bp Chem Int Ltd Adhesive blends
IT1274835B (it) * 1994-07-14 1997-07-25 Techne Spa Testa di coestrusione per macchine termoformatrici per soffiaggio, concambio rapido degli strati colorati della materia plastica estrusa.

Also Published As

Publication number Publication date
ITMI960899A1 (it) 1997-11-07
EP0806279A1 (en) 1997-11-12
ITMI960899A0 (it) 1996-05-07

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Legal Events

Date Code Title Description
0001 Granted