PL1897672T3 - Sposób i urządzenie do wytwarzania preform z tworzywa sztucznego o kształcie taśmy - Google Patents
Sposób i urządzenie do wytwarzania preform z tworzywa sztucznego o kształcie taśmyInfo
- Publication number
- PL1897672T3 PL1897672T3 PL07017388T PL07017388T PL1897672T3 PL 1897672 T3 PL1897672 T3 PL 1897672T3 PL 07017388 T PL07017388 T PL 07017388T PL 07017388 T PL07017388 T PL 07017388T PL 1897672 T3 PL1897672 T3 PL 1897672T3
- Authority
- PL
- Poland
- Prior art keywords
- mold
- preform
- thickness
- seen
- tubular preform
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 238000000465 moulding Methods 0.000 abstract 1
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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06905—Using combined techniques for making the preform
- B29C49/0691—Using combined techniques for making the preform using sheet like material, e.g. sheet blow-moulding from joined 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
- 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
- B29C48/25—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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
- B29C49/0411—Means for defining the wall or layer thickness
- B29C49/04112—Means for defining the wall or layer thickness for varying the thickness
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
-
- 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
- B29C2791/001—Shaping in several steps
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0063—Cutting longitudinally
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92619—Diameter or circumference
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92628—Width or height
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92647—Thickness
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92923—Calibration, after-treatment or cooling 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
- B29C48/001—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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006042065.9A DE102006042065B4 (de) | 2006-09-05 | 2006-09-05 | Verfahren und Vorrichtung zur Herstellung von bandförmigen Kunststoffvorformlingen |
| EP07017388.5A EP1897672B2 (de) | 2006-09-05 | 2007-09-05 | Verfahren und Vorrichtung zur Herstellung von bandförmigen Kunststoffvorformlingen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL1897672T3 true PL1897672T3 (pl) | 2009-12-31 |
Family
ID=38904663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL07017388T PL1897672T3 (pl) | 2006-09-05 | 2007-09-05 | Sposób i urządzenie do wytwarzania preform z tworzywa sztucznego o kształcie taśmy |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1897672B2 (pl) |
| AT (1) | ATE435109T1 (pl) |
| DE (2) | DE102006042065B4 (pl) |
| ES (1) | ES2329624T3 (pl) |
| PL (1) | PL1897672T3 (pl) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE496754T1 (de) | 2006-10-05 | 2011-02-15 | Inergy Automotive Systems Res | Verfahren zur herstellung eines kunststoffhohlkörpers aus einem vorformling |
| DE102010025006A1 (de) | 2010-06-24 | 2011-12-29 | Kautex Textron Gmbh & Co. Kg | Verfahren zur Herstellung von Hohlkörpern aus thermoplastischem Kunststoff sowie Vorrichtung zur Durchführung des Verfahrens |
| DE102011108026B4 (de) | 2011-07-20 | 2013-12-12 | Kautex Textron Gmbh & Co Kg | Verfahren zur Herstellung von Kunststoffbehältern |
| DE102012006043A1 (de) | 2012-03-27 | 2013-10-02 | Kautex Textron Gmbh & Co Kg | Verfahren zur Herstellung von Hohlkörpern aus thermolplastischem Kunststoff sowie Vorrichtung zur Durchführung des Verfahrens |
| DE102012012529B4 (de) | 2012-06-26 | 2014-01-09 | Kautex Textron Gmbh & Co. Kg | Verfahren zur Herstellung von Hohlkörpern aus thermoplastischem Kunststoff unter Verwendung eines wenigstens dreiteiligen Blasformwerkzeugs sowie Vorrichtung zur Durchführung des Verfahrens |
| DE102012023035B4 (de) | 2012-11-26 | 2017-02-16 | Kautex Textron Gmbh & Co. Kg | Verfahren zur Herstellung eines Hohlkörpers aus thermoplastischem Kunststoff |
| TWI723671B (zh) * | 2019-12-10 | 2021-04-01 | 英屬開曼群島商聯冠國際股份有限公司 | 用於聚氯乙烯發泡仿木葉片之成型模具 |
| DE102020102528A1 (de) | 2020-01-31 | 2021-08-05 | Uwe Rost und Jörg Neumann GbR (vertretungsberechtigte Gesellschafter: Uwe Rost, 53842 Troisdorf und Jörg Neumann, 53842 Troisdorf) | Formwerkzeug zum herstellen von kunststoffvorformlingen und werkzeuganordnung |
| CN114654696B (zh) * | 2022-04-13 | 2023-08-29 | 三杰节能新材料股份有限公司 | 一种大型聚乙烯保温外护弯管加工时的温控机构 |
| CN116748399A (zh) * | 2023-08-18 | 2023-09-15 | 安徽新江海包装材料有限公司 | 空调风道构件成型装置及vf空调风道构件 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2429008A1 (de) * | 1974-06-18 | 1976-01-08 | Gerhard H M May | Verfahren und duese zum herstellen von folienbahnen |
| JPS55101415A (en) * | 1979-01-30 | 1980-08-02 | Toyo Plast Kogyo Kk | Hollow molding method for synthetic resin |
| DE3117179A1 (de) † | 1981-04-30 | 1982-11-25 | Etimex Kunststoffwerke Gmbh, 7000 Stuttgart | Verfahren zum extrudieren mindestens einer kunststoffbahn und vorrichtung zur durchfuehrung eines derartigen verfahrens |
| JPS61261021A (ja) * | 1985-05-15 | 1986-11-19 | Kyoraku Co Ltd | 中空成形方法 |
| US5474734A (en) * | 1992-02-27 | 1995-12-12 | Kabushiki Kaisha Toyo Seat (Toyo Seat Ltd.) | Blow-molding method for resinous molding product and apparatus therefor |
| JPH0671644A (ja) † | 1992-08-28 | 1994-03-15 | Ishikawajima Harima Heavy Ind Co Ltd | 偏平パリソンの製造方法及び装置 |
| FI107321B (fi) * | 1998-04-07 | 2001-07-13 | Nextrom Holding Sa | Menetelmä ja laite muovikalvon valmistamiseksi |
| BE1013191A3 (fr) * | 1999-12-22 | 2001-10-02 | Solvay | Procede de fabrication de corps creux en matiere plastique. |
| DE10205524A1 (de) * | 2002-02-08 | 2003-08-21 | Sig Kautex Gmbh & Co Kg | Verfahren zur Herstellung von schalenförmigen Formteilen oder Hohlkörpern aus thermoplastischem Kunststoff |
| KR20090128510A (ko) * | 2002-07-12 | 2009-12-15 | 바젤 폴리올레핀 게엠베하 | 하프 쉘로부터 중공 플라스틱 물품을 제조하기 위한 다단계 방법 |
| DE10231866A1 (de) * | 2002-07-12 | 2004-01-22 | Basell Polyolefine Gmbh | Mehrstufiges Verfahren zur Herstellung von Kunststoffhohlkörpern aus Halbschalen |
| DE10355818A1 (de) * | 2003-11-28 | 2005-06-09 | Dieter Lampart | Extrusionsdüse mit Wanddickensteuerung |
| DE102004057974B4 (de) * | 2004-11-30 | 2009-05-07 | W. Müller GmbH | Extrusionskopf mit Düsenspalteinstellung |
| DE202006013751U1 (de) † | 2006-09-05 | 2006-11-02 | Saw Sonderanlagen Und Werkzeugbau Gmbh | Vorrichtung zur Herstellung von bandförmigen Kunststoffvorformlingen |
-
2006
- 2006-09-05 DE DE102006042065.9A patent/DE102006042065B4/de active Active
-
2007
- 2007-09-05 EP EP07017388.5A patent/EP1897672B2/de active Active
- 2007-09-05 ES ES07017388T patent/ES2329624T3/es active Active
- 2007-09-05 AT AT07017388T patent/ATE435109T1/de not_active IP Right Cessation
- 2007-09-05 PL PL07017388T patent/PL1897672T3/pl unknown
- 2007-09-05 DE DE502007000976T patent/DE502007000976D1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP1897672B1 (de) | 2009-07-01 |
| EP1897672B2 (de) | 2022-07-20 |
| DE502007000976D1 (de) | 2009-08-13 |
| EP1897672A3 (de) | 2008-07-30 |
| DE102006042065B4 (de) | 2021-05-12 |
| DE102006042065A1 (de) | 2008-03-27 |
| EP1897672A2 (de) | 2008-03-12 |
| ATE435109T1 (de) | 2009-07-15 |
| ES2329624T3 (es) | 2009-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| PL1897672T3 (pl) | Sposób i urządzenie do wytwarzania preform z tworzywa sztucznego o kształcie taśmy | |
| US8794948B2 (en) | Apparatus for the continuous production of a twin wall pipe with an integral socket | |
| AU5349299A (en) | Method for the continuous manufacture of a twin-wall pipe having a pipe socket and apparatus for putting the method into practice | |
| JP4759563B2 (ja) | ソケット付き二重壁管を連続的に製造する方法と、二重壁管と、その方法を実施し、その二重壁管を製造するための装置 | |
| CN100581783C (zh) | 导管成形装置 | |
| US6787092B2 (en) | Pipe extrusion die for multi-layer pipe | |
| DE60003163D1 (de) | Rohr aus thermoplastischem kunststoff | |
| EP2679379A3 (en) | Methods and devices for manufacturing biaxially oriented tubing | |
| CN105722658A (zh) | 用于冷却塑料型材的设备和方法 | |
| WO2009047454A3 (fr) | Machine d'injection d'un materiau thermodurcissable, en particulier de vulcanisation de caoutchouc, et procede de mise en oeuvre correspondant | |
| JP2021041703A (ja) | コルゲータ、押出システムおよび方法 | |
| WO2009037736A1 (ja) | ゴムストリップ材の成形装置及びゴムストリップ材の成形方法 | |
| ATE474710T1 (de) | Vorrichtung zun extrudieren von hohlsträngen | |
| CA2358249A1 (en) | Mold for suction/blowing system | |
| CN101605648A (zh) | 用于生产导管的方法和装置以及根据所述方法生产的导管 | |
| CN102481717B (zh) | 用于冷却塑料型材的装置和方法 | |
| ATE417721T1 (de) | Steuerbarer kühlgasring mit gleichrichtereinheit | |
| ATE415261T1 (de) | Werkzeug zur urformung eines hohlen formlings aus kunststoff | |
| AU2007219269A1 (en) | Device for extruding hollow strands | |
| JP4786288B2 (ja) | 押出機ヘッド用二重流路 | |
| WO2009035161A3 (en) | An extrusion die with manifold system and a method of extrusion | |
| WO2008014009A3 (en) | Method for manufacturing a hose | |
| US8783299B2 (en) | Method of and apparatus for continuously producing a twin-wall pipe comprising pipe socket and twin-wall pipe | |
| CA2658408C (en) | Method and apparatus for continuous manufacture of a compound pipe comprising a pipe socket | |
| US10583596B2 (en) | Injection head for an apparatus for the production of a twin-wall pipe |