DE1100938B - Process for producing a pipe combination made of plastic that is stressed by internal pressure - Google Patents
Process for producing a pipe combination made of plastic that is stressed by internal pressureInfo
- Publication number
- DE1100938B DE1100938B DEM28478A DEM0028478A DE1100938B DE 1100938 B DE1100938 B DE 1100938B DE M28478 A DEM28478 A DE M28478A DE M0028478 A DEM0028478 A DE M0028478A DE 1100938 B DE1100938 B DE 1100938B
- Authority
- DE
- Germany
- Prior art keywords
- plastic
- core tube
- tube
- internal pressure
- producing
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/36—Bending and joining, e.g. for making hollow articles
- B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
- B29C53/382—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges using laminated sheets
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/581—Winding and joining, e.g. winding spirally helically using sheets or strips consisting principally of plastics material
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/36—Bending and joining, e.g. for making hollow articles
- B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
Verfahren zum Herstellen einer durch Innendruck beanspruchten Rohrkombination aus Kunststoff Die Erfindung betrifft ein Verfahren zum Herstel-]en einer durch Innendruck beanspruchten Rohrkombination aus Kunststoff, wonach um ein Rohr als Kernrohr aus thermoplastischem Kunststoff ein Band aus ebensolchem Werkstoff schraubenlinienförmig gewickelt wird. Zweck der Erfindung ist rdie Erhöhung der Festigkeit einer derartigen Rohrkombination. Process for producing a pipe combination stressed by internal pressure made of plastic The invention relates to a method for producing a by Internal pressure stressed pipe combination made of plastic, according to which a pipe as Core tube made of thermoplastic material, a band made of the same material in a helical shape is wrapped. The purpose of the invention is to increase the strength of such Pipe combination.
Es ist bereits vorgeschlagen worden, innendruckbeanspruchte Rohre aus Polyäthylen zwecks Erhöhung der Festigkeit einer Verstreckung in der Umfangs richtung und gegebenenfalls auch einer Verstreckung in der Längsrichtung zu unterwerfen. It has already been proposed to use internal pressure pipes Made of polyethylene to increase the strength of a stretching in the circumference direction and, if necessary, also a stretching in the longitudinal direction.
Erfindungsgemäß wird für die Herstellung einer Rohrkomobinvation durch das eingangs bezeichnete Verfahren als Kunststoff Polyäthylen verwendet, und es werden vor dem Wickelprozeß sowohl das Kern rohr als auch das Band in an sich bekannter Weise in Längsrichtung verstreckt. Hierbei können die Verstreckungsgrade den unterschiedlichen Beanspruchungen des Rohres in der Umfangs richtung und in der Längsrichtung in einfacher Weise angepaßt werden. According to the invention for the production of a Rohrkomobinvation polyethylene is used as plastic by the method described above, and there are both the core tube and the tape in itself before the winding process stretched in a known manner in the longitudinal direction. The degrees of stretching can be used here the different stresses on the pipe in the circumferential direction and in be adapted to the longitudinal direction in a simple manner.
Das längsverstreckte Kernrohr dient in der Hauptsache zur Aufnahme der in Längsrichtung der Rohrkombination auftreteniden Beanspruchungen, während die Beanspruchungen in der Umfangs richtung vorwiegend durch das schraubenförmig auf das Kernrohr gewickelte Kunststoffband aufgenommen werden. Das Kernrohr kann ein stranggepreßtes Kunststoffrohr sein. Stattdessen kann auch das Kernrohr in an sich bekannter Weise aus einem zu einem Rohrlgebogenen Streifen, dessen Längskanten miteinander verschweißt werden, hergestellt wenden. Dieser Streifen kann vor der Verarbeitung zu einem Rohr der Verstreckung unterworfen werden.The longitudinally stretched core tube is mainly used for receiving the stresses occurring in the longitudinal direction of the pipe combination, while the stresses in the circumferential direction mainly due to the helical shape plastic tape wound on the core tube. The core tube can be an extruded plastic pipe. Instead, the core tube can also be connected to known way from a strip bent into a tube, the longitudinal edges of which are welded together, turn produced. This strip can be in front of the Processing to form a tube are subjected to stretching.
Auf das Kernrohr können auch mehrere verstreckte Kunststoffbänder aufgewickelt werden. Several stretched plastic strips can also be placed on the core tube be wound up.
Ein Ausführungsbeispiel eines nach dem neuen Verfahren hergestellten Rohres ist in der Zeichnung teilweise im Längsschnitt, teilweise in Ansicht dargestellt. An embodiment of a manufactured according to the new method Rohres is shown in the drawing partly in longitudinal section, partly in view.
Auf ein Kernrohr 1 aus Polyäthylen ist ein Band 2 aus dem gleichen Kunststoff schraubenförmig aufgewickelt. Die Windungen dieses Kunststoffbandes können untereinander durch Schweißen verbunden sein. A tape 2 of the same is attached to a core tube 1 made of polyethylene Plastic wound in a helical shape. The turns of this plastic tape can be connected to one another by welding.
Gegebenenfalls können die Windungen auch überlappt sein. Ferner kann das aufgewickelte Kunststoffband mit dem Kernrohr in der ganzen Ausdehnung oder punktweise durch Kleben oder Schweißen verbunden sein.If necessary, the turns can also be overlapped. Furthermore can the rolled up plastic tape with the core tube in the whole extension or be connected at points by gluing or welding.
Das Kernrohr ist aus einem Kunststoffband als längsnahtgeschweiß tes Rohr hergestellt. Die Längs -naht ist bei 3 angedeutet. Dieses Kunststoffband ist erfindungsgemäß vor der Verarbeitung zu dem längsnahtgeschweißten Kernrohr zur Erhöhung der Festig- keit in Längsrichtung verstreckt. Stattdessen kann auch das fertige Kern rohr durch Längs'dehnung verstreckt werden. Das schraubenförmige aufgewickelte Kunststoffband 2 wird vor dem Aufwickeln auf das Kernrohr ebenfalls zur Erhöhung seiner Festigkeit in Längsrichtung verstreckt. The core tube is made of a plastic strip as a longitudinal seam welded tes pipe produced. The longitudinal seam is indicated at 3. This plastic tape is according to the invention before processing to the longitudinally welded core tube for Increase in strength stretched lengthways. Instead, that too finished core tube can be stretched by longitudinal stretching. The helical coiled Plastic tape 2 is also used to increase before being wound onto the core tube stretched its strength in the longitudinal direction.
Die Idurch einen Innendruck verursachten B eansp ruchungen des zusammengesetzten Rohres werden in Längsrichtung des Rohres in der Hauptsache durch das Kernrohr 1 und in der Umfangsrichtung des Rohres vorwiegend durch das schraubenförmige aufgewickelte Band 2 aufgenommen. The stresses on the composite material caused by internal pressure Tube are mainly through the core tube 1 in the longitudinal direction of the tube and in the circumferential direction of the pipe mainly wound by the helical one Volume 2 recorded.
Natürlich können auch mehrere Kunststoffbänder 1> gegebenenfalls mit gegenläufiger Steigungsrichtung, übereinander auf das Kernrohr aufgewickelt werden. Of course, several plastic straps 1> can also be used if necessary with opposite pitch direction, wound one above the other onto the core tube will.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM28478A DE1100938B (en) | 1955-10-14 | 1955-10-14 | Process for producing a pipe combination made of plastic that is stressed by internal pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM28478A DE1100938B (en) | 1955-10-14 | 1955-10-14 | Process for producing a pipe combination made of plastic that is stressed by internal pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1100938B true DE1100938B (en) | 1961-03-02 |
Family
ID=7300413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEM28478A Pending DE1100938B (en) | 1955-10-14 | 1955-10-14 | Process for producing a pipe combination made of plastic that is stressed by internal pressure |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1100938B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1985997A (en) * | 1932-06-29 | 1935-01-01 | Dupont Viscoloid Company | Celluloid article and method of making same |
| US2502638A (en) * | 1945-07-31 | 1950-04-04 | Owens Illinois Glass Co | Method of extruding plastics in tubular form and wrapping the tubing |
| DE878847C (en) * | 1944-04-28 | 1953-06-08 | S Lavorazione Materie Plastich | Process for the production of hoses provided with reinforcing coils from thermoplastic material |
-
1955
- 1955-10-14 DE DEM28478A patent/DE1100938B/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1985997A (en) * | 1932-06-29 | 1935-01-01 | Dupont Viscoloid Company | Celluloid article and method of making same |
| DE878847C (en) * | 1944-04-28 | 1953-06-08 | S Lavorazione Materie Plastich | Process for the production of hoses provided with reinforcing coils from thermoplastic material |
| US2502638A (en) * | 1945-07-31 | 1950-04-04 | Owens Illinois Glass Co | Method of extruding plastics in tubular form and wrapping the tubing |
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