DE3714592C2 - - Google Patents
Info
- Publication number
- DE3714592C2 DE3714592C2 DE3714592A DE3714592A DE3714592C2 DE 3714592 C2 DE3714592 C2 DE 3714592C2 DE 3714592 A DE3714592 A DE 3714592A DE 3714592 A DE3714592 A DE 3714592A DE 3714592 C2 DE3714592 C2 DE 3714592C2
- Authority
- DE
- Germany
- Prior art keywords
- layers
- pipe
- impurities
- jacket
- uniform
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/133—Rigid pipes of plastics with or without reinforcement the walls consisting of two layers
-
- 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
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered 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
- B29C48/36—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3714592A DE3714592C3 (de) | 1987-05-01 | 1987-05-01 | Kraftfahrzeug-Sicherheitsrohr aus thermoplastischem Kunststoff |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3714592A DE3714592C3 (de) | 1987-05-01 | 1987-05-01 | Kraftfahrzeug-Sicherheitsrohr aus thermoplastischem Kunststoff |
Publications (3)
Publication Number | Publication Date |
---|---|
DE3714592A1 DE3714592A1 (de) | 1988-11-17 |
DE3714592C2 true DE3714592C2 (tr) | 1989-11-02 |
DE3714592C3 DE3714592C3 (de) | 1997-04-24 |
Family
ID=6326660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3714592A Expired - Lifetime DE3714592C3 (de) | 1987-05-01 | 1987-05-01 | Kraftfahrzeug-Sicherheitsrohr aus thermoplastischem Kunststoff |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3714592C3 (tr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3907106C2 (de) * | 1989-03-04 | 1997-07-17 | Friatec Keramik Kunststoff | Rohrleitung |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3102350A1 (de) * | 1981-01-24 | 1982-08-19 | Dipl.-Ing. Dr. Ernst Vogelsang Gmbh & Co Kg, 4352 Herten | Mehrlagiges rohr aus thermoplastischem kunststoff |
-
1987
- 1987-05-01 DE DE3714592A patent/DE3714592C3/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3714592C3 (de) | 1997-04-24 |
DE3714592A1 (de) | 1988-11-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8363 | Opposition against the patent | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: TECHNOFLOW TUBE-SYSTEMS GMBH, 34277 FULDABRUECK, D |
|
8366 | Restricted maintained after opposition proceedings | ||
8381 | Inventor (new situation) |
Free format text: BRUNNHOFER, ERWIN, 34277 FULDABRUECK, DE |
|
8305 | Restricted maintenance of patent after opposition | ||
D4 | Patent maintained restricted | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: TECHNOFLOW FUEL-SYSTEMS GMBH, 34277 FULDABRUECK, D |