IT1158868B - Procedimento ed apparecchiatura per produrre tubi termoplastici a strati multipli - Google Patents
Procedimento ed apparecchiatura per produrre tubi termoplastici a strati multipliInfo
- Publication number
- IT1158868B IT1158868B IT25135/78A IT2513578A IT1158868B IT 1158868 B IT1158868 B IT 1158868B IT 25135/78 A IT25135/78 A IT 25135/78A IT 2513578 A IT2513578 A IT 2513578A IT 1158868 B IT1158868 B IT 1158868B
- Authority
- IT
- Italy
- Prior art keywords
- procedure
- equipment
- multiple layer
- layer thermoplastic
- thermoplastic pipes
- Prior art date
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
- B29C48/3363—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 layered die, e.g. stacked discs
-
- 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
- B29C48/16—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
- 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
- B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
- B29C48/327—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections with centering means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
- Laminated Bodies (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US81204177A | 1977-07-01 | 1977-07-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
IT7825135A0 IT7825135A0 (it) | 1978-06-29 |
IT1158868B true IT1158868B (it) | 1987-02-25 |
Family
ID=25208307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT25135/78A IT1158868B (it) | 1977-07-01 | 1978-06-29 | Procedimento ed apparecchiatura per produrre tubi termoplastici a strati multipli |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5439481A (it) |
BE (1) | BE868687A (it) |
FR (1) | FR2396230A1 (it) |
GB (1) | GB2000570A (it) |
IT (1) | IT1158868B (it) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3001705C2 (de) * | 1980-01-18 | 1984-10-18 | Wavin B.V., Zwolle | Zentriervorrichtung für Formwerkzeuge von Strangpressen |
US4465449A (en) * | 1982-12-06 | 1984-08-14 | Borg-Warner Chemicals, Inc. | Coextrusion feedblock for making lightweight, rigid thermoplastic pipe |
JPS6422541A (en) * | 1987-07-17 | 1989-01-25 | Idemitsu Petrochemical Co | Multi-layer material |
DE4135336C2 (de) * | 1991-10-26 | 1993-10-21 | Rehau Ag & Co | Verfahren zum Strangpressen von Mehrschichtrohren |
MXPA04010979A (es) * | 2002-05-07 | 2005-02-14 | Behr Systems Inc | Metodo y aparato para suministrar pintura a un aplicador y descargar el mismo. |
US7584771B2 (en) | 2002-05-07 | 2009-09-08 | Durr Systems, Inc. | Method and apparatus for delivering paint to an applicator and flushing same |
JP2013043412A (ja) * | 2011-08-26 | 2013-03-04 | Sekisui Chem Co Ltd | 多層管用金型 |
DE102013220746A1 (de) * | 2013-10-14 | 2015-04-16 | Battenfeld-Cincinnati Austria Gmbh | Vorrichtung und Verfahren zum Kühlen von Kunststoffprofilen |
-
1978
- 1978-06-29 IT IT25135/78A patent/IT1158868B/it active
- 1978-06-30 GB GB7828443A patent/GB2000570A/en not_active Withdrawn
- 1978-06-30 JP JP7876478A patent/JPS5439481A/ja active Pending
- 1978-07-03 FR FR7819751A patent/FR2396230A1/fr active Granted
- 1978-07-03 BE BE189031A patent/BE868687A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
BE868687A (fr) | 1978-11-03 |
GB2000570A (en) | 1979-01-10 |
FR2396230A1 (fr) | 1979-01-26 |
FR2396230B3 (it) | 1981-02-06 |
JPS5439481A (en) | 1979-03-26 |
IT7825135A0 (it) | 1978-06-29 |
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