SE447014B - PROCEDURE FOR MANUFACTURING A PREMIUALLY INSULATED PIPE - Google Patents
PROCEDURE FOR MANUFACTURING A PREMIUALLY INSULATED PIPEInfo
- Publication number
- SE447014B SE447014B SE8301293A SE8301293A SE447014B SE 447014 B SE447014 B SE 447014B SE 8301293 A SE8301293 A SE 8301293A SE 8301293 A SE8301293 A SE 8301293A SE 447014 B SE447014 B SE 447014B
- Authority
- SE
- Sweden
- Prior art keywords
- jacket
- strip
- pipe
- around
- belt
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000004033 plastic Substances 0.000 claims description 16
- 229920003023 plastic Polymers 0.000 claims description 16
- 238000005187 foaming Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 8
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims 1
- 238000009751 slip forming Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
- B29C44/322—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables
- B29C44/324—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables the preformed parts being tubular or folded to a tubular shape
-
- 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
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/151—Coating hollow articles
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/04—Arrangements using dry fillers, e.g. using slag wool
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Molding Of Porous Articles (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
-10 15 20 25 30 35 447 014 2 alla parametrar hàlles inom relativt snäva gränser kan det emellertid lätt hända att manteln okontrollerat de- formeras av innifrån pâtryckande skumplast. Det kan där- vid speciellt komma till blåsbildning i manteln, och då kan heller inte uteslutas att manteln spricker så att ieaningsröret blir obrukbarc. i Uppfinningen har fått till uppgift att åstadkomma ett förfarande av det inledningsvis omnämnda slaget, me- delst vilket på enkelt sätt kan säkerställas att mantelns önskade cirkelrunda form erhålles över ledningsrörets hela längd utan att man behöver befara en uppsprickning av manteln. , Denna uppgift löses enligt uppfinningen därigenom - att ett i längdriktning inlöpande tunt band for- mas kontinuerligt kring manteln till ett rör, som fast tillslutes vid sin i länqdriktning förlöpande överlapp- ningsskarv, A - och att bandet, efter det att ledningsröret pas- serat en för fullständig uppskumning av plastblandningen tillräckligt lång sträcka, åter borttages från manteln. -10 15 20 25 30 35 447 014 2 all parameters are kept within relatively narrow limits, however, it can easily happen that the jacket is deformed uncontrollably by foam pressing from the inside. In this case, blistering can especially occur in the jacket, and then it can also not be ruled out that the jacket will crack so that the inlet pipe becomes unusable. The invention has been given the object of providing a method of the kind mentioned in the introduction, by means of which it can be easily ensured that the desired circular shape of the jacket is obtained over the entire length of the pipe without having to fear a cracking of the jacket. This object is solved according to the invention in that - that a thin strip running in longitudinally is formed continuously around the jacket to a pipe which is fixedly closed at its longitudinally extending overlapping joint, A - and that the strip, after the conduit has passed a distance long enough for complete foaming of the plastic mixture is again removed from the jacket.
För utövande av detta förfarande kan hittills bruk- liga tillverkningsanordningar för värmeisolerade led- ningsrör oförändrat komma till anliggning. Genom att bandet formas kontinuerligt kring manteln som fast rör erhålles för manteln en fast och runtom förlöpande fast- hållning. Den vid extruderns lämnande ännu fortfarande relativt mjuka manteln behöver således endast kylas un- der kort tid för att erhålla en något bättre mekanisk stabilitet. Den fixeras mekaniskt genom det därpå som fast rör runt densamma formade bandet, att den uppskum- mande plastblandningens i det inre verksamma krafter kan uppfângas. Det av bandet bildade röret behöver därvid vid sin formning ingalunda ligga tätt an mot manteln.To carry out this procedure, hitherto customary manufacturing devices for heat-insulated pipelines can remain unchanged. By forming the strip continuously around the jacket as a fixed pipe, a fixed and extending holding is obtained for the jacket. The sheath, which is still relatively soft when leaving the extruder, thus only needs to be cooled for a short time to obtain a slightly better mechanical stability. It is mechanically fixed by the strip which is fixedly fixed thereon around the same strip, so that the forces of action of the foaming plastic mixture can be captured. The tube formed by the strip does not have to lie close to the jacket during its formation.
Röret ger manteln i stället dess slutgiltiga dimensio- ner, varvid den även i ringa utsträckning kan utvidgas genom den skummande plastblandningen. Manteln kan ytter- ligare kylas vid passerande av den efterföljande produk- tionssträckan. u» ÉÖÉSÉ ÖUALITY l0 l5 25 30 35 447 014 3 Efter passage av produktionssträckan, inom vilken plastblandningens uppskumning fullbordas, kan det som rör kringformade bandet åter avlägsnas. På detta sätt säkerställes att ledningsröret behåller ett cirkelrunt tvärsnitt, varvid speciellt mantelns cirkelrunda form utmed hela längden kan säkerställas. Risk för att man- teln deformeras eller t o m spricker på grund av den uppskummande plastblandningen har tillförlitligt elimi- nerats.The pipe instead gives the jacket its final dimensions, whereby it can also be expanded to a small extent by the foaming plastic mixture. The jacket can be further cooled when passing the subsequent production line. u »ÉÖÉSÉ ÖUALITY l0 l5 25 30 35 447 014 3 After passing the production line, within which the foaming of the plastic mixture is completed, that which concerns the round-shaped strip can be removed again. In this way it is ensured that the conduit retains a circular cross-section, whereby in particular the circular shape of the jacket along the entire length can be ensured. The risk of the jacket deforming or even cracking due to the foaming plastic mixture has been reliably eliminated.
Förfarandet enligt uppfinningen beskrives i det följande i anslutning till bifogade ritningar såsom ut- föringsexempel. Därvid visar fig 1 i schematisk återgivning ett avsnitt av en anordning för utövande av förfarandet, fig 2_- 5 olika tvärsnitt utmed linjerna II-II, III-III, IV-IV Och V-V i fiq 1.The method according to the invention is described in the following in connection with the accompanying drawings as exemplary embodiments. Fig. 1 shows in schematic representation a section of a device for carrying out the method, Fig. 2 shows different cross-sections along the lines II-II, III-III, IV-IV and V-V in Fig. 1.
Med 1 har betecknats ett metalliskt rör som medelst förfarandet enligt uppfinningen skall bearbetas till ett värmeisolerat ledningsrör. Detta metallrör utgöres fö- roträdesvis av ett kopparrör, vilket genom speciell glödgningsbehandling beträffande sina mekaniska egenska- per inställts så att röret är väl böjbart. Kring metall- röret 1 har skruvlinjeformigt lindats ett skumplastband 2, i det följande även kallat spiral, vilken genom ett såsom bärare tjänstgörande, genomgående pappersband kan vara dragfast utförd. Lindningen kring metallröret 1 kan ske på konventionella lindningsmaskiner. Såsom skumplast kan här exempelvis användas skummad polyuretan.Denoted by 1 is a metallic pipe which, by means of the method according to the invention, is to be processed into a heat-insulated pipe. This metal tube preferably consists of a copper tube, which is set by special annealing treatment with respect to its mechanical properties so that the tube is well bendable. A foam plastic strip 2, hereinafter also called a spiral, is helically wound around the metal tube 1, which can be drawn in a tensile manner by means of a continuous strip of paper serving as a carrier. The winding around the metal tube 1 can take place on conventional winding machines. For example, foamed polyurethane can be used as foam plastic.
Metallröret 1 frammatas tillsammans med spiralen 2 i pilens 3 riktning. På denna väg hamnar båda i en strängspruta 4, i vilken kring metallröret 1 resp spi- ralen 2 sprutas en mantel 5 av termoplastisk plast. Den- na mantel ligger på spiralen.The metal tube 1 is advanced together with the spiral 2 in the direction of the arrow 3. In this way, both end up in an extruder 4, in which a sheath 5 of thermoplastic plastic is injected around the metal tube 1 and the spiral 2, respectively. This mantle lies on the spiral.
Tillsammans med metallröret 1 inmatas i strängsprutan 4 kontinuerligt en bandformig bärare 6, vilken avlindas från en rulle 7. Denna bandformade bärare böjes medelst en formningsanordning 8 något i tvärriktningen. Medelst en PQ@ß_ @UAL1TY l0 15 20 '25 30 35 4117 014 r 4 dispenseringsanordning 9 sprutas en uppskumbar plast- blandning 10 på bäraren 6. Denna plastblandning instäl- les företrädesvis så att den i beroende av tillverknings- hastigheten först efter relativt lång tid börjar att skumma upp. Såsom material kan även här användas en bland- ning på polyuretanbas. Den uppskumbara plastblandningen 10 medbringas av den såsom “transportband“ tjänstgöran- de bäraren 6 kontinuerligt till det mellan metallröret 1 resp spiralen 2 och manteln 5 kvarstående ringformade mellanrummet.Together with the metal tube 1, a strip-shaped carrier 6 is continuously fed into the extruder 4, which is unwound from a roll 7. This strip-shaped carrier is bent by means of a forming device 8 slightly in the transverse direction. By means of a PQ @ ß_ @ UAL1TY l0 15 20 '25 30 35 4117 014 r 4 dispensing device 9 a foamable plastic mixture 10 is sprayed on the carrier 6. This plastic mixture is preferably adjusted so that, depending on the production speed, it only time begins to foam up. A polyurethane-based mixture can also be used as the material here. The foamable plastic mixture 10 is carried by the carrier 6 serving as a "conveyor belt" continuously to the annular space remaining between the metal tube 1 and the spiral 2 and the jacket 5, respectively.
Manteln 5 består av något termoplastiskt isolerma- terial. Här användes företrädesvis polyvinylklorid, vars egenskaper inställcs så att även den färdiga nedkylda manteln 5 fortfarande är väl böjlíg. Såsom material för bäraren 6 lämpar sig exempelvis papper, speciellt krep- pat papper.The jacket 5 consists of some thermoplastic insulating material. Here, polyvinyl chloride is preferably used, the properties of which are adjusted so that even the finished cooled jacket 5 is still well flexible. Suitable materials for the carrier 6 are, for example, paper, especially crepe paper.
När manteln 5 lämnar strängsprutan 4 avkyles den kortvarigt i en endast schematiskt antydd kylanordning 11 så att manteln får tillräcklig mekanisk stabilitet.When the jacket 5 leaves the extruder 4, it is cooled briefly in a cooling device 11 only schematically indicated so that the jacket has sufficient mechanical stability.
Efter kylanordningen 11 formas kring manteln 5 ett tunt band 12, vilket tätt ligger an mot mantelns 5 yta. Det- ta band avrullas från en rulle 13 och formas i längd- riktning pälöpande kring manteln 5, varvid bandet får sin rörform i en formningsanordning 14. Genom denna kringformninq bildar bandet 12 en i längdriktning för- löpande överlappningsskarv 15 (fig 5), där bandet me- delst något lim kan sammanklistras till ett fast rör som har tillfredsställande mekanisk hállfasthet. Det därtill erforderliga limmet kan exempelvis medelst en anordning 16 appliceras på skarven 15. Bandet 12 har då genom detta arbetsmoment rörformigt fast tillslutits, så att det kan tjänstgöra som ett fast stöd för manteln 5 när densamma står under den skummande plastbland- ningens 10 inifrån verksamma tryck.After the cooling device 11, a thin band 12 is formed around the jacket 5, which abuts closely against the surface of the jacket 5. This strip is unrolled from a roll 13 and formed in the longitudinal direction piling around the jacket 5, the strip having its tubular shape in a forming device 14. Through this shaping the strip 12 forms a longitudinally extending overlapping joint 15 (Fig. 5), where the strip can be glued together by means of some glue to a solid pipe which has satisfactory mechanical strength. The adhesive required for this purpose can, for example, be applied to the joint 15 by means of a device 16. The strip 12 has then been tubularly closed by this working step, so that it can serve as a fixed support for the jacket 5 when it is under the foam of the foaming plastic mixture 10. print.
Den uppskummande plastblandningen 10 har med sina .komponenter inställts så att den visserligen redan kan börja skumningen inuti strängsprutan 4 men att den slut- »- Qflfflïf-Iïïs s: 10 f... (11 20 25 35 447 014 5 giltiga uppskumningen först sker senare. Detta uppskum- ningsförlopp skall bli fullt verksamt först när bandet 12 hopklistrats till ett fullständigt fast rör. Därefter kan skumningsförloppet fullbordas och kan vara avslutad efter en tillverkningssträcka på exempelvis 50 m. Efter det att denna tillverkningssträcka passerats utövas inte längre något invändigt tryck på manteln 5 så att bandet 12 äter kan avlägsnas från densamma. Det nu färdiga, värmeisolerade ledningsröret kan lindas upp pà en trumma.The foaming plastic mixture 10 has been set with its components so that it can indeed already start foaming inside the extruder 4, but that the final foaming is first effected (11 20 25 35 447 014). This foaming process must become fully effective only when the belt 12 has been glued together into a completely solid tube, after which the foaming process can be completed and can be completed after a production distance of, for example, 50 m. the jacket 5 so that the belt 12 eats can be removed from it.The now finished, heat-insulated conduit can be wound up on a drum.
För att bandet 12 i slutet~av uppskumningssträckan relativt enkelt åter skall kunna tas bort från manteln 5, är det ändamålsenligt att låta en i fig 5 antydd stark tråd 17 löpa in kontinuerligt under bandet 12, vilken tråd senare kan användas för att riva upp bandet 12 när detta sedan i uppskumningssträckans slut åter skall ta- gas bort. För att genom träden 17 inte skall uppkomma nägra tryckmärken i manteln 5 är det ändamålsenligt att, såsom visas i fig 5, ilägga träden 17 i skarven 15.In order that the belt 12 can be removed from the jacket 5 relatively easily at the end of the foaming section, it is expedient to let a strong wire 17 indicated in Fig. 5 run in continuously under the belt 12, which wire can later be used to tear up the belt 12 when this is then to be removed again at the end of the foaming section. In order that no pressure marks appear in the mantle 5 through the trees 17, it is expedient to, as shown in Fig. 5, insert the trees 17 into the joint 15.
För bandet 12 kan varje lämpligt, tillräckligt håll- fast material användas, som även kan limmas på enkelt sätt. Speciellt ändamålsenlig är användning av en meka- niskt hàllfast papperssort.For the strip 12, any suitable, sufficiently durable material can be used, which can also be glued in a simple manner. The use of a mechanically resistant type of paper is particularly expedient.
Manteln 5 kan pàsprutas såsom slätt rör resp slät slang pà metallröret 1 resp spiralen 2. Det är emeller- tid även möjligt att invändigt profilera manteln 5 så att den på sin insida uppvisar utspràng 18, som är skil- da från varandra genom längsgående kanaler. En sådan ut- föringsform visas i fig 4 och 5. Utsprången 18 har före- trädesvis triangulär tvärsnittsform på sådant sätt att de uppvisar inàtvända spetsar. En sådan mantel har, jäm- fört med en slät slang resp ett slätt rör, fördelen att den totalt sett blir böjligare och således på detta sätt ytterligare främjar ledningsrörets goda böjningsegenska- per, samt att slangen samtidigt är mindre känslig mot slagpâverkan än en invändigt icke profilerad mantel.The jacket 5 can be sprayed as a smooth pipe or smooth hose on the metal pipe 1 or the spiral 2. However, it is also possible to profile the jacket 5 internally so that it has projections 18 on its inside, which are separated from each other by longitudinal channels. Such an embodiment is shown in Figures 4 and 5. The projections 18 preferably have a triangular cross-sectional shape in such a way that they have inverted tips. Compared with a smooth hose or a smooth pipe, such a jacket has the advantage that it becomes more flexible overall and thus in this way further promotes the good bending properties of the pipe, and that the hose is at the same time less sensitive to impact than an internal non. profiled jacket.
FDOOLLQUALIT-YFDOOLLQUALIT-Y
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3208724A DE3208724A1 (en) | 1982-03-11 | 1982-03-11 | Process for producing a thermally insulated conduit pipe |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8301293D0 SE8301293D0 (en) | 1983-03-10 |
| SE8301293L SE8301293L (en) | 1983-09-12 |
| SE447014B true SE447014B (en) | 1986-10-20 |
Family
ID=6157879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8301293A SE447014B (en) | 1982-03-11 | 1983-03-10 | PROCEDURE FOR MANUFACTURING A PREMIUALLY INSULATED PIPE |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS58185234A (en) |
| BE (1) | BE896124A (en) |
| DE (1) | DE3208724A1 (en) |
| DK (1) | DK157098C (en) |
| FR (1) | FR2523264B1 (en) |
| IT (1) | IT1197599B (en) |
| SE (1) | SE447014B (en) |
| SU (1) | SU1449025A3 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3503787A1 (en) * | 1985-02-05 | 1986-08-07 | Winkler GmbH, 6900 Heidelberg | Tubular connection element |
| SE8501212D0 (en) * | 1985-03-12 | 1985-03-12 | Uponor Ab | SET FOR MANUFACTURE OF PREMIUATED PIPES |
| NO892736L (en) * | 1989-07-03 | 1991-01-04 | Hagtvedt Finn | FOAM FILLED STRUCTURAL ELEMENTS PRODUCED IN A CONTINUOUS PROCESS. |
| EP0906538B1 (en) * | 1996-06-20 | 2000-05-17 | Rockwool International A/S | A process for continuous preparation of pipe sections with foil |
| RU2170381C1 (en) * | 2000-07-10 | 2001-07-10 | Открытое акционерное общество "Спецнефтегазстрой" | Form for applying foamed polymeric insulation onto tube |
| RU2185565C2 (en) * | 2000-07-10 | 2002-07-20 | Открытое акционерное общество "Спецнефтегазстрой" | Device for application of protective coat on pipe |
| RU2170383C1 (en) * | 2000-07-10 | 2001-07-10 | Открытое акционерное общество "Спецнефтегазстрой" | Method for applying protective coating onto tube |
| RU2170384C1 (en) * | 2000-07-13 | 2001-07-10 | Открытое акционерное общество "Спецнефтегазстрой" | Apparatus for applying foamed polymeric insulation onto tube |
| LT2586602T (en) | 2010-06-28 | 2018-12-27 | Obschestvo S Ogranichennoy Otvetstvennostiyu "Smit-Yartsevo" | Method for manufacturing a thermally insulated flexible tube |
| RU2494870C1 (en) | 2010-09-20 | 2013-10-10 | Общество С Ограниченной Ответственностью "Смит-Ярцево" | Line for production of heat-insulated flexible pipe |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1704748C3 (en) * | 1951-01-28 | 1974-11-28 | Kabel Metallwerke Ghh | Process for the continuous production of thermally insulated pipes |
| DE1175423B (en) * | 1954-11-18 | 1964-08-06 | Collo Rheincollodium Koeln G M | Method and device for continuously wrapping elongated objects with foams |
| FR1420449A (en) * | 1964-10-16 | 1965-12-10 | Liaison S A | Method and device for coating elements such as tubes with synthetic or natural cellular material |
| DE1704842A1 (en) * | 1967-07-31 | 1969-05-29 | Hennecke Gmbh Maschf | Method and device for the production of foamable materials, in particular hollow bodies enveloped with polyurethane |
| DE1779406B1 (en) * | 1968-08-08 | 1972-04-27 | Kabel Metallwerke Ghh | METHOD FOR MANUFACTURING THERMAL INSULATED PIPES |
| DE1902400A1 (en) * | 1969-01-18 | 1970-10-01 | Kabel Metallwerke Ghh | Process for the production of thermally insulated line pipes |
| BE758125A (en) * | 1969-12-04 | 1971-04-01 | Kabel Metallwerke Ghh | PROCESS FOR MANUFACTURING THERMAL AND SOUND ISOLATED DUCTS |
| DE2224314A1 (en) * | 1972-05-18 | 1973-11-29 | Kabel Metallwerke Ghh | Acoustic insulated ventilation ducting - with foamed plastic layer between metal outer and plastic liner tubes |
| GB1482661A (en) * | 1974-07-25 | 1977-08-10 | Rakennusmuovi Oy | Method of manufacturing an insulated conduit |
| DE2613741A1 (en) * | 1976-03-31 | 1977-10-13 | Kabel Metallwerke Ghh | PROCESS FOR THE CONTINUOUS MANUFACTURING OF THERMAL AND SOUND INSULATED PIPES |
| DE2700478C2 (en) * | 1977-01-07 | 1986-07-10 | Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover | Process for the production of a heat and sound insulated pipe |
| DE2841934A1 (en) * | 1978-09-27 | 1980-04-17 | Kabel Metallwerke Ghh | HEAT-INSULATED PIPE AND METHOD FOR THE PRODUCTION THEREOF |
-
1982
- 1982-03-11 DE DE3208724A patent/DE3208724A1/en active Granted
-
1983
- 1983-02-28 DK DK101183A patent/DK157098C/en not_active IP Right Cessation
- 1983-03-08 IT IT47869/83A patent/IT1197599B/en active
- 1983-03-10 SE SE8301293A patent/SE447014B/en not_active IP Right Cessation
- 1983-03-10 JP JP58038405A patent/JPS58185234A/en active Granted
- 1983-03-10 SU SU833567938A patent/SU1449025A3/en active
- 1983-03-10 BE BE0/210289A patent/BE896124A/en not_active IP Right Cessation
- 1983-03-11 FR FR8304003A patent/FR2523264B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3208724A1 (en) | 1983-09-22 |
| SE8301293D0 (en) | 1983-03-10 |
| DK101183A (en) | 1983-09-12 |
| SE8301293L (en) | 1983-09-12 |
| IT8347869A0 (en) | 1983-03-08 |
| IT1197599B (en) | 1988-12-06 |
| DK101183D0 (en) | 1983-02-28 |
| FR2523264A1 (en) | 1983-09-16 |
| DK157098C (en) | 1990-04-02 |
| JPH0346301B2 (en) | 1991-07-15 |
| BE896124A (en) | 1983-09-12 |
| JPS58185234A (en) | 1983-10-28 |
| SU1449025A3 (en) | 1988-12-30 |
| DK157098B (en) | 1989-11-06 |
| DE3208724C2 (en) | 1991-05-29 |
| FR2523264B1 (en) | 1987-07-24 |
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