FI91374C - Method for continuous fabrication of a thermally insulated pipeline with a plastic sheath - Google Patents
Method for continuous fabrication of a thermally insulated pipeline with a plastic sheath Download PDFInfo
- Publication number
- FI91374C FI91374C FI863423A FI863423A FI91374C FI 91374 C FI91374 C FI 91374C FI 863423 A FI863423 A FI 863423A FI 863423 A FI863423 A FI 863423A FI 91374 C FI91374 C FI 91374C
- Authority
- FI
- Finland
- Prior art keywords
- pipeline
- plastic
- foamed
- foam
- belt device
- Prior art date
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Classifications
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- 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
- F16L59/143—Pre-insulated pipes
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- 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
- B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
- B29C31/002—Handling tubes, e.g. transferring between shaping stations, loading on mandrels
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- 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
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- 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
- B29C44/334—Filling the preformed spaces or cavities
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- 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
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- 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
- B29C48/157—Coating linked inserts, e.g. chains
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- 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
-
- 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
- B29C48/03—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
- B29L2023/225—Insulated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Robotics (AREA)
- Thermal Insulation (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
i 91374i 91374
Menetelmå muovisuojavaipalla varustetun låmpoeristetyn putki-johdon jatkuvaa valmistusta vårten.A method for the continuous manufacture of a thermally insulated pipe with a plastic sheath.
Esillå olevan keksinnon kohteena on menetelma muovisuojavai-5 palla varustetun låmpoeristetyn putkijohdon jatkuvaa valmistusta vårten nestemåisten aineiden siirtåmiseksi, jolloin ympåriinsa vaahdotettava putki.iohto syo- tetaan jatkuvasti putkimaiseen kaksoismuottiketjuhihnalait-teessa olevaan ontelotilaan suorittamalla samalla ympårivaah-10 dotus keskitetysti aksiaalisessa suunnassa, jolloin putkijoh-to kiinnitetåån paikoilleen vaahtoaineella ja varustetaan muovisuoj avaipalla.The present invention relates to a method for the continuous transfer of liquids for the continuous manufacture of a thermally insulated pipeline with a plastic protective jacket, wherein the pipe to be foamed around it is continuously fed fastened in place with foam and fitted with a plastic cover.
Menetelmåt ulkoisella muovisella suojavaipalla varus-tettujen låmpoeristettyjen putkijohtojen jatkuvaksi sekå myos 15 katkonaiseksi valmistamiseksi ovat tunnettuja.Methods for the continuous as well as intermittent fabrication of thermally insulated pipelines with an external plastic sheath are known.
Erilaiset tunnetut jatkuvat valmistusmenetelmåt kåsit-tåvåt vålikkeillå varustetun putkijohdon johtamisen yhdesså suojavaippana toimivan muovikalvoletkun kanssa kiinteån muottiputken kautta, jolloin muovinauhan reunojen liittåminen ja 20 hitsaus muoviletkuun tapahtuu hieman ennen kiinteåån muotti-putkeen asettamista. Vaahdotettava muoviseos levitetåån yleenså hieman ennen muoviletkuun muodostetun muovikal-vonauhan limittåisten reunojen yhteenliittåmistå ja -hitsaus-ta muovikalvonauhaan. Kiinteån muottiputken kauttakulun aika-25 na putkijohdon ja letkumaisen ulkoisen suojavaipan vålinen rengasmainen tila tåytetåån sitten vaahdolla. Tåmån menetel-mån yhteydesså voidaan mahdollisesti kåyttåå muovikalvoletkun asemasta molemmilta puolilta kopolymeereillå påållystettyå alumiinikalvoa, jolloin suojavaippa vaahdotetun putkijohdon 30 kiiljettua kiinteån muottiputken låpi suulakepuristetaan ekstruuderin avulla (DE-OS 33 07 865).Various known continuous manufacturing methods comprise passing a pipeline with intermediate bridges together with a plastic film hose acting as a shield through a fixed mold tube, whereby the joining of the plastic strip and welding to the plastic hose takes place shortly before the fixed mold tube is inserted. The foamable plastic mixture is usually applied shortly before the overlapping edges of the plastic film strip formed in the plastic hose are joined and welded to the plastic film tape. During the transit time of the fixed mold tube, the annular space between the pipeline and the tubular outer sheath is then filled with foam. In connection with this method, it is possible to use an aluminum foil coated with copolymers on both sides instead of a plastic film hose, whereby the protective sheath after the foamed pipeline 30 is polished through a fixed mold tube is extruded by a DE (DE).
Tåtå jatkuvaa menetelmåå ei kuitenkaan ole voitu kåyttåå låpimitaltaan suurempien putkijohtojen yhteydesså, koska esiintyvåstå vaahtopaineesta riippuvat kitkavoimat ulkovaipan 35 ja kiinteån muottiputken vålillå tulevat liian suuriksi putkijohdon nopeaa låpikulkua vårten kiinteån muottiputken kaut- 2 ta, vaikka ulkovaipan ja kiinteån muottiputken våliin lisåt-tåis iinkin vo iteluainetta.However, this continuous method has not been used in connection with larger diameter pipelines, because the frictional forces depending on the foam pressure present between the outer jacket 35 and the fixed mold pipe become too large even through the open pipe 2 of the fixed pipe. .
Naiden jatkuvien menetelmien sijasta onkin kåytetty erityisesti pituudeltaan 6-12 m ja låpimitaltaan 20-60 mm 5 olevlen putkijohtojen yhteydesså katkonaista menetelmåå, jos-sa putkijohto varustetaan ensin mååråtyin etåisyyksin vaahtoa lapåisevillå vålilevyillå ja påållystetåån suhteellisen paksul la muoviletkulla. Nain muodostettu johtorakenne vaahdote-taan sitten våhitellen kaltevassa asennossa. Muoviletkun pak-10 suus maåraytyy tåmån menetelmån yhteydesså esiintyvån vaahto-paineen mukaisesti, koska sen tarkoituksena el ole muodostaa vain ulkovalppaa, vaan toimia samalla myos "muottina". Lisaksi on muoviletkun on muoviletkun oltava niin luja, ettå se kykenee keståmåån esiintyvån vaahtopaineen. Tåmån menetelmån 15 haittana ei siten ole pelkåståån paksun muoviletkun kåyton vålttåmåttomyys, vaan myos se tosiasia, ettå kaltevassa asennossa tapahtuvan vaahdotuksen avulla ei saada aikaan tasaista vaahtoa ja lisåksi se, ettå tulokseksi saadun vaahdon omi-naispaino on suhteellisen korkea. Tållainen katkonainen mene-20 telmå ei myoskåån ole taloudellisesti edullinen.Instead of these continuous methods, a discontinuous method has been used, especially in the case of pipelines with a length of 6-12 m and a diameter of 20-60 mm 5, in which the pipeline is first provided at predetermined distances with foam-spaced gaps. The conductor structure thus formed is then gradually foamed in an inclined position. The thickness of the plastic hose is determined according to the foam pressure present in connection with this method, since its purpose is not only to form the outer sheath, but also to act as a "mold". In addition, the plastic hose must be strong enough to withstand the foam pressure. The disadvantage of this method 15 is therefore not only the necessity of using a thick plastic hose, but also the fact that flotation in an inclined position does not produce a uniform foam and, in addition, that the resulting foam has a specific gravity. Such an intermittent method is also not economically advantageous.
Esillå olevan keksinnon tarkoituksena on siten saada aikaan menetelmå, jonka avulla on mahdollista valmistaa myos låpimitaltaan suurempia putkijohtoja jatkuvalla ja taloudellisesti edullisella tavalla sååståmålla samalla ulkovaipan 25 materiaalia ja muodostamalla paksuudeltaan pienempi tasainen låmpoå eriståvå vaahtokerros.The object of the present invention is thus to provide a method by means of which it is also possible to produce pipelines with larger diameters in a continuous and economically advantageous manner while saving the material of the outer jacket 25 and forming a smaller layer of heat-insulating foam.
Tåmå keksinnon mukainen tarkoitus saavutetaan siten, ettå 30 a) låmpoeristettåvinå putkijohtoina kåytetåån jåykkiå, ei taipuisia putkijohtoja, joilla on suurehko låpimitta, edullisesti 20-60 mm ja pituus 6-18 m ja jotka ovat putkiliitoskappaleilla yhdistetyt toisiinsa ja jotka johdetaan nåennåisesti pååttymåttomånå johtona 35 kaksoismuottikfet jxftxihnalaitteen låpi, jolloin putkilii- toskappaleet ovat sylintereitå, jotka vastakkaisista på-iståån on veu*Btet*u aksiaalisilla tartuinporauksilla.The object of the present invention is achieved in that a) thermally insulated pipelines are used as rigid, non-flexible pipelines with a larger diameter, preferably 20-60 mm and a length of 6-18 m, which are connected to each other by means of pipe connections and which are connected through a belt device, wherein the pipe fittings are cylindrical, which at their opposite ends are veu * Btet * u with axial gripping bores.
91374 3 jolloin tartuinporausreikien låpimitta vastaa putkien ulkolåpimittaa ja sylinterien ulkolåpimitta kaksoismuot-tiketjuhihnalaitteen muottikanaalin sisålåpimittaa, ja 5 b) vaahdotettava muoviseos on tehty sellaiseksi, ettå se kovettuu ainakin niin paljon, ettå se kannattaa putkijoh toa viimeiståån silloin, kun putkijohto omapainonsa joh dosta taipuisi, ja 10 c) ympårivaahdotetun putkijohtoon sen låhdettyå kaksoismuot-tiketjuhihnalaitteesta suulakepuristetaan mahdollisesti jååhdytetyllå tyhjiokalibroidulla ekstruuderilla rengas suuttimen vålityksellå vaahdotettu, ominaispainoltaan korkea muovisuojavaippa.91374 3 wherein the diameter of the gripping boreholes corresponds to the outer diameter of the tubes and the outer diameter of the cylinders to the inner diameter of the mold channel of the double mold chain belt device, and 5 b) the foamable plastic mixture is made so that 10 c) an annular foamed, high specific gravity plastic sheath is extruded into the circumferentially foamed pipeline after it has left the double-molded chain belt device with a possibly cooled vacuum calibrated extruder.
1515
Keksinnon mukaisesti kåytettåvå kaksoismuottiketjuhihnalaite on sinånså tunnettu ja se on selostettu esimerkiksi patentti-julkaisun DE-AS 12 66 485 mukaisten pitkittåisesså suunnassa viillettyjen vaahtomuovieristeputkien jatkuvaa valmistusta 20 vårten kåytettåvånå laitteena tai patenttijulkaisun DE-PS 25 03 425 mukaiseh kahden, ulkokalvon avulla saranamaisesti yh-teenliitettåvån kokoonpantavan putkipuoliskon jatkuvaa valmistusta vårten kåytettåvånå laitteena.The double molded chain belt device used according to the invention is known per se and is described, for example, by the continuous production of longitudinally cut foam insulation pipes according to DE-AS 12 66 485 continuous manufacture of pipe halves as a device for use.
Erityisiå vaikeuksia aiheutti julkaisun DE-AS 12 66 25 485 mukaisten pitkittåisesså suunnassa viillettyjen vaahto muovieristeputkien jatkuvassa valmistuksessa valusydåmen kiinnipito, joka ulottuu molempien liikkuvien muottilohkoket-jujen muodostamån muottikanavan koko pituudelle ja jota tar-vitaan vaahtomuovieristeputken sisåtilan muodostamiseen. On 30 nimittåin osoittautunut, ettå vaikka sydån on molemmissa på-issåån lujasti kiinnitettynå, on vaahdon muottikanavaan aihe-uttama paine kuitenkin niin voimakas, ettå sydåntå ei voida 4 pitåa keskeisesti paikoillaan koko pituudellaan. Tål-laisten asentopoikkeamien vålttåmiseksi varustettiin sydån koko pituudeltaan lisåksi kantavalla kiinnitys-levylla, joka ulottuu sateen suuntaisesti muottikana-5 vassa vastakkaisten muottilohkojen valisså.Particular difficulties were caused in the continuous production of longitudinally slit foam plastic insulation pipes according to DE-AS 12 66 25 485 by holding the casting core over the entire length of the mold channel formed by both movable mold block chains and required for forming the foam insulation pipe. Namely, it has been found that although the core is firmly attached in both ends, the pressure exerted by the foam on the mold channel is so strong that the core cannot be held centrally in its entire length. In order to avoid such positional deviations, the core was additionally provided with a load-bearing fastening plate along its entire length, which extends in the direction of the rain in the mold channel between the opposite mold blocks.
Sama haitta valusydamen asentopoikkeaman suhteen esiintyy myos erååssa toisessa tunnetussa laitteessa, jossa sisaisena sydåmena kaytetaan kiinteåa karatappia, joka on kiinnitetty vain laitteen syottopaahan ja ulot-10 tuu vapaasti kiinteåan tai kiertåvåån ulkomuottiin. Mydskåån tålloin ei vain yksipuolisesti kiinnitetty karatappi kykene antamaan riittåvåa stabiliteettia vaahdon yhteydessa esiintyvån paineen vastaanottamiseksi ilman asentopoikkeamaa. Tasså yhteydessa viitataan edel-15 la mainitun julkaisun DE-PS 25 03 425 palsta 3, rivit 49 eteenpåin mukaisiin rakenteisiin. Mainitun karatapin poikkeamaan liittyvan ongelman johdosta on siten patent-tijulkaisun DE-AS 21 65 584 mukaisen toisen tunnetun laitteen yhteydessa ehdotettu karatapin poik-20 .keaman valvomista lasersåteen avulla ja korjauksen suo-rittamista såato- ja ohjauselementtien valityksellå.The same drawback with respect to the positional deviation of the casting core also occurs in another known device, in which a fixed spindle pin is used as the internal core, which is attached only to the feeding head of the device and protrudes freely into the fixed or rotating outer mold. In this case, only a one-sided spindle pin is not able to provide sufficient stability to receive the pressure associated with the foam without a positional deviation. In this connection, reference is made to the structures according to the above-mentioned publication DE-PS 25 03 425, column 3, lines 49. Due to said problem with the spindle pin deviation, it has thus been proposed in connection with another known device according to DE-AS 21 65 584 to monitor the spindle pin deviation by means of a laser beam and to carry out the correction by means of harvesting and control elements.
Taman apulaitteen avulla on kuitenkin vaikea suorittaa kiintean sisasydamen (karan) hairiotonta korjausta jo pelkastaan siitå johtuen, etta kyseinen laite on erit-25 tain monimutkainen ja hairioaltis.However, with the aid of this auxiliary device, it is difficult to carry out the trouble-free repair of the solid inner core (spindle) simply because the device in question is very complex and prone to disturbance.
Mainittujen kaksoismuottiketjuhihnalaitteiden pitkittais’essa suunnassa viillettyjen vaahtomuovieris-tysputkien valmistukseen liittyvan kayton yhteydessa saatujen kpkemuksien mukaisesti. on tehty se håmmåstytta-' 30 vå havainto, ettå keksinnon mukaisen menetelman yhteydessa sa'avutetaan kaksoismuottiketjuhihnalaitetta kaytta-malla vaahtomuovilla eristetyt johtoputket, jolloin la-pimitaltaan suuriinkin putkijohtoihin kiinnitetaån vaahtomuovi samakeskisesti myos valilevyja kayttamatta.In accordance with the experience gained in connection with the use associated with the manufacture of foam insulation pipes cut in the longitudinal direction of said double molded chain belt devices. It has been surprisingly found that in connection with the method according to the invention, foam pipes insulated with foam are obtained by using a double-molded chain belt device, whereby the foam is also attached to the pipes of the largest diameter without concentrating the foam.
35 5 9137435 5 91374
Kaksoismuottiketjuhihnalaitteen kaytto mahdol-listama jatkuvatoiminen menetelmå sallii putkijohtojen jatkuvan vaahdotuksen, joka sisåltaå sen edun, ettå vaahtomuovitayte kåsittaa koko pituudellaan samanlai-5 sen kennorakenteen ilman ominaispainoltaan pienempia kuplia, jolloin yhtalåisen mekaanisen keståvyyden li-såksi saavutetaan myos parempi låmmbneriståvyys.The continuous method made possible by the use of a double-molded chain belt device allows continuous flotation of the pipelines, which has the advantage that the foam filler comprises a similar cell structure along its entire length without better specific gravity bubbles, thus achieving uniform mechanical resistance.
Kaksoismuottiketjuhihnalaitteen jalkeen kytke-tyn ekstruuderin sekå siihen liittyvan kalibrointilait-10 teen avulla on lisaksi mahdollista saavuttaa taloudelli-sella tavalla ominaispainoltaan korkea ja ulkopinnal-taan silea mallin mukainen vaahtomuovivaippa. Vaahto-muovivaippa voidaan keksinnon mukaisen menetelman yhtey-desså tehdå myos huomattavasti ohuemmaksi edellå selos-15 tettuun katkonaiseen menetelmåån verrattuna, koska lampo-eriståvan vaahtomiiovikerroksen muodostamisen yhteydessa esiintyvaa painetta ei enåa tarvitse ottaa huomioon vaahtomuovivaipassa. Siten keksinnon mukaisen menetelman yhteydessa vaahtomuovivaipan vaikutus pienenee diffuu-20 siotiiviyden ja kuljetuksen ja asennuksen yhteydessa tapahtuvien vahinkojen estamiseksi annetun suojan suh-teen. Vaahdotettu suojavaippa vahentaa painoa ja hintaa sekå lisåå joustavuutta. Tama vaippa kåsittaa etupååsså vaahdotetun polyetyleenin, polypropyleenin, polyvinyy-25 likloridin tai vastaavan vaipan ominaispainon ollessa 3 sopivimmin 500-800 kg/m .In addition, by means of the extruder connected after the double mold chain belt device and the associated calibration device 10, it is possible to economically achieve a foam jacket according to a model with a high specific gravity and a smooth outer surface. In connection with the method according to the invention, the foam-plastic jacket can also be made considerably thinner compared to the intermittent method described above, since the pressure present in the formation of the heat-insulating foam layer no longer has to be taken into account in the foam jacket. Thus, in the case of the method according to the invention, the effect of the foam jacket is reduced in relation to the diffusion-tightness and the protection afforded to prevent damage during transport and installation. The foamed protective cover reduces weight and price as well as increases flexibility. This jacket mainly comprises foamed polyethylene, polypropylene, polyvinyl chloride or a similar jacket with a specific gravity of preferably 3 to 500-800 kg / m 3.
Koska'keksinnon mukaisessa menetelmåsså kåytettåva laite on asetettu siten, ettå putkijohdot sijoitetaan automaattisesti samakeskisesti - siis keskeisesti - ul- 30 kovaipan suhteen, voidaan vålttåå kaikkien valilevy.ien tai kes'kitystukien kaytto, jotka ovat vå 111åmå11omiå • n'ykyisin kaytbssa olevien menetelmien yhteydessa. Tållbin saavutetaan myos se lisåetu, ettå useat "kylmasillat" jååvåt pois, jolloin keksinnon mukaisella tavalla val-35 6 mistet tu låmpoeriståvå putkijohto tulee edelleen olennai-sesti paremmaksi ja halvemmaksi.Since the device used in the method according to the invention is arranged in such a way that the pipelines are automatically positioned concentrically - i.e. centrally - with respect to the outer jacket, the use of any baffles or centering supports which are only the most common in the present methods can be avoided. . In this way, the additional advantage is also achieved that several "cold bridges" are eliminated, whereby the thermally insulating pipeline prepared in accordance with the invention becomes further substantially better and cheaper.
Keksinnon mukainen menetelmå sopii kåytettåvåksi kaikkien lampoeristav/ien putkijohtoieri, ku ten kuDari-, 5 terås- tai muoviputkien yhteydessa. Kupari- ja muovi-putket voidaan lapimitaltaan pienempina, esimerkiksi 22 mm lapimittaisina, toimittaa kelattuina 50 m pi-tuisina tai pitempinå rullille, syottaå vastaavan suo-raviivaisen asennoinnin jalkeen kåytånnollisesti kat-10 soen pååttymattomana kaksoismuottiketjuhihnalaittee-seen ja kelata taas rullalle vaahdotuksen ja muovivai-pan kiinnittåmisen jalkeen.The method according to the invention is suitable for use in connection with all heat-insulating pipelines, such as copper, steel or plastic pipes. Copper and plastic pipes can be supplied in rolls with a smaller sheet size, for example 22 mm sheet length, wound on rolls 50 m long or longer, after attaching the pan.
Lapimitaltaan suurempien muoviputkien yhteydessa tamå saavutetaan parhaiten suoraan ennen keksinnon mu-15 kaisesti asetetun laitteen kåyttoå suulakepuristuksen avulla, jolloin putkien kåsittelyvaihe jåa pois. Lahdet-tyaan keksinnon mukaisesti asetetusta laitteesta leika-taan putkijohdot, joita ei enaå kelata rullalle, pituu-deltaan halutuiksi låmpoeristaviksi putkijohdoiksi.In the case of larger plastic pipes, this is best achieved by means of extrusion immediately before the use of the device according to the invention, whereby the treatment step of the pipes is omitted. After leaving the device according to the invention, the pipelines, which are no longer wound on a roll, are cut into thermally insulating pipelines of the desired length.
20 Jaykkia putkia, esimerkiksi teråsputkia tai muita metalliputkia, kaytetaan 12-18 m pituisina kappaleina, jotka hieman ennen syottoa keksinnon mukaisesti asetet-tuun laitteeseen liitetaan yhteen erityisten muovimuh-vien avulla "paattymattomaksi johdoksi" ja vaahdotetaan 25 sekå paållystetåån vaipalla myos kåytånnollisesti katsoen "pååttymattomåsti". Vaippapåållystyksen jalkeen putket sitten taas erotetaan toisistaan erikoissahan avulla muhvien eli siis putkien liitoskappaleiden alueel-la. Putkien liitoskappaleet on asetettu siten, ettå nii-den poistamisen jalkeen låmpberiståvien putkijohtojen asennuksen yhteydessa putkien pååt jååvåt liman uaahtn-muovieristystå, jolloin putkijohdot voidaan liittaå eristetylla tavalla tiiviisti ja keståvåsti toisiinsa tavanomaisten putkiliitoskappaleiden vålityksellå.20 Rigid pipes, for example steel pipes or other metal pipes, are used in pieces of 12-18 m in length, which are connected to the device according to the invention shortly before feeding by means of special plastic sleeves as an "uncoated wire" and foamed. ". After the jacket coating, the pipes are again separated from each other by means of a special saw in the area of the sleeves, i.e. the pipe fittings. The pipe fittings are arranged in such a way that, after their removal, the ends of the pipes remain in the mucous foam insulation during installation of the insulating pipes, so that the pipes can be connected in an insulated manner tightly and permanently to each other with conventional pipe fittings.
35 7 91374 Låmpoeriståvåå vaahtomuovikerrosta vårten voidaan kayttåa mita tahansa sopivaa paisutusaineella varustettua muovimateriaalia tax vastaavia kunkin muovimateriaalin muodostavia låhtokomponentteja kåyttåen.35 7 91374 Any suitable plastic material provided with a blowing agent can be used for the thermally insulating foam layer using the corresponding output components forming each plastic material.
5 Kåyttotarkoituksensa mukaisesti voi låmpoeriståvån kerroksen muovimateriaali olla joustavampaa tai jåykem-paå. Joustavien vaahtomuovien kåyttoå suositellaan esimerkiksi silloin, kun "pååttymåttomåt" lampoeristetyt putkijohdot låhdettyåån keksinnon mukaisesti asetetusta 10 laitteesta kelataan rullalle. Sitåvastoin voi jaykkien putkien yhteydessa olla edullista kayttaå kovaa vaahto-muovia.5 Depending on the intended use, the plastic material of the heat-insulating layer may be more flexible or stiffer. The use of flexible foams is recommended, for example, when "endless" thermally insulated pipelines are wound on a roll after leaving a device 10 according to the invention. In contrast, it may be advantageous to use hard foam in connection with rigid pipes.
Sopivia vaahtomuovimateriaaleja ovat paåasiassa polyuretaani-, polyisosyaaniuretaani-, polyolefiini- ja 15 erityisesti polyetyleeni- tai polypropyleenivaahdot tai niiden vastaavien kopolymerisaattien vaahdot seka poly-styreeniuaahtomuovit.Suitable foam materials are mainly polyurethane, polyisocyanurethane, polyolefin and in particular polyethylene or polypropylene foams or foams of their corresponding copolymers, as well as poly-styrene foam foams.
Polyuretaanivaahtojen, seka joustavampien ettå jay-kempien laatujen, yhteydessa tarvitaan erotuskalvoa, joka 20 yhdessa johtoputken kanssa syotetåan kaksoismuotti- ketjuhihnalaitteeseen siten, etta se tulee muottilohko-ien viereen. Erotuskalvon ja putkijohdon vålinen renoas-mainen tila vaahdotetaan sen jalkeen.Polyurethane foams, both more flexible and Jay-grade grades, require a separating film which, together with the conduit, is fed to the double mold chain belt device so that it comes next to the mold blocks. The reno-like space between the separating membrane and the pipeline is then foamed.
Erotuskalvona voidaan kayttaa millaista kalvolevya 25 tahansa, kuten paperi-, muovi- tai metallikalvoa. Erotus-vaikutuksen saavuttamiseksi on riittåvåå kayttåa paperi-tai muovikålvoa erotuskalvona. Jos taas toivotaan lisåvai-kutuksia, kuten esimerkiksi låmpoheijastusta tai hoyry-sulkua, on edullista kayttåa metallikalvoa, esimerkiksi 30 paperilla tai muovilla yhdeltå tai molemmilta puolilta påållystettyå alumiinikalvoa.As the separating film, any film sheet 25 can be used, such as a paper, plastic or metal film. To achieve the separating effect, it is sufficient to use a paper or plastic film as a separating film. If, on the other hand, additional effects are desired, such as thermal reflection or vapor barrier, it is preferable to use a metal film, for example an aluminum film coated on one or both sides with paper or plastic.
Toisaalta voidaan mååråttyjen vaahtomuovityyppien, kuten polyetyleenin tai polystyreenin, yhteydessa, olla kåyttåmåttå erotuskalvoa, koska voi olla riittåvåå, ettå 35 8 muottilohkoketjut kåsitellaan paluuliikkeen yhteydesså tavallisella muottierotusaineella. Jos nåmå muotti-lohkoketjut ovat lisåksi paluuliikkeen aikana jååhdyte-tyt, niin voidaan sopivan menetelmån yhteydessa saavuttaa 5 suhteellisen kiintea ja låhes homogeeninen pintapåållys, jolloin mahdollisesti voidaan luopua jopa ulommasta muo-visuojavaipasta.On the other hand, in the case of certain types of foam, such as polyethylene or polystyrene, it may not be necessary to use a separating film, since it may be sufficient for the mold block chains to be treated with a conventional mold release agent in connection with the return movement. If these mold-block chains are additionally cooled during the return movement, a relatively solid and almost homogeneous surface coating can be obtained in connection with a suitable method, in which case even the outer plastic sheath can possibly be dispensed with.
Vaahdotettavan seoksen sybtto johtoputken ja ero-tuskalvon tai muottilohkoketjujen valiseen rengasmaiseen 10 tilaan tapahtuu tavanomaisella tavalla, kuten esimerkiksi edella mainitussa patenttijulkaisussa DE-OS 33 07 865 on selostettu, jolloin vaahdotettava seos levitetåan erotus-kalvolle ennen kalvoletkuksi liittåmistå. Vaahdotettavan muovin, etupåassa polyuretaanivaahdon muodostamista var-15 ten tarkoitettujen komponenttien, asetus tapahtuu siten, etta jo hieman vaahdotettavalla seoksella varustetun let-kumaiseksi muodostetun erotuskalvon syoton jålkeen kak-soismuottiketjuhihnalaitteeseen, johtoputken ja erotuskalvon valinen rengasmainen tila taytetåån vaahtomuovilla 20 ja samanaikaisesti johtoputki pidetåån keskeisesså asen-nossa kantokykyiseksi tulleen vaahtomuovin avulla. Tata vårten tarvittavat toimenpiteet ovat alan ammattimiehelle tuttuja tai voidaan suorittaa vaikeuksitta.The placement of the foamable mixture in the annular space 10 between the guide tube and the separating film or the mold block chains takes place in a conventional manner, as described, for example, in the aforementioned DE-OS 33 07 865, whereby the foamable mixture is applied to the separating film before being connected to the film. The setting of the foamable plastic, in particular the components for forming the polyurethane foam, takes place in such a way that, after feeding the tubularly formed separating film with a slightly foamable mixture, the annular space between the guide tube and the separating film is simultaneously by means of a foam which has become load-bearing. The necessary measures are familiar to the person skilled in the art or can be carried out without difficulty.
Haluttaessa voidaan johtoputkea vaahdotettaessa 25- asettaa vaahtomuovin sisåan myos yksi tai useampia ilmai-sinjohtoja tietyn etaisyyden påahån johtoputkesta. Nåmå ilmaisinjohdot ilmoittavat ja paikantavat vaahtomuoviker-rokseen tunkeutuneen kosteuden.If desired, when foaming the conduit, one or more detector leads may also be placed inside the foam at a certain distance from the conduit. These detector wires indicate and locate the moisture that has penetrated the foam layer.
Keksinnon mukainen menetelmå sallii tietenkin myos 30 useampien toistensa suhteen eristettyjen johtoputkien vaahdotuksen, joita tålloin ympåroi yhteinen muovisuoja-vaippa. Suositeltavaa on tålloin asettaa kaksi johtoputkea yhteen muovivaippaan ja eriståå nåmå johdot toistensa suhteen, niin ettå tållaisen liitosrakenteen poikkileik-35 9 91374 kaus ei ole lahinnå pyorea, vaan soikion muotoinen. Tåta jårjestelya voidaan kåyttåå esimerkiksi påajohdosta ku-luttajille menevanå haarajohtona, jolloin syotto- ja paluuvesijohto on asetettu yhteen rakenneyksikkoon, 5 minka avulla voidaan våhentaå siirto- ja asennuskustan-nuksia.The method according to the invention, of course, also allows the foaming of a plurality of mutually insulated conduits, which are then surrounded by a common plastic sheath. In this case, it is recommended to place the two conduits in one plastic sheath and to insulate these conduits with respect to each other, so that the cross-section of such a connecting structure is not at least circular, but oval. This arrangement can be used, for example, as a branch line from the main line to the consumers, in which case the supply and return water line is placed in one structural unit, which can be used to reduce transmission and installation costs.
Esilla olevan keksinnon erityisen suositeltavia rajoittamattomassa mielesså annettuja sovellutusesimerk-keja selostetaan seuraavassa kuvioihin 1-4 viitaten.Particularly preferred non-limiting embodiments of the present invention will now be described with reference to Figures 1-4.
10 Kuvio 1 esittaa kaaviomaisesti paallyskuvaa kek sinnon mukaisen laitteen sydånosasta.Figure 1 schematically shows a bale view of a core part of a device according to the invention.
Kuvio 2 esittaa kaaviomaisesti poikkileikkausta hihnalaitteen (5) kaksoismuottiketjut muodostavis-ta muottilohkoista (5a, 5b, 5a/ ja 5b') kuvion 1 linjaa 15 A-A pitkin otettuna.Fig. 2 schematically shows a cross-section of the mold blocks (5a, 5b, 5a / and 5b ') forming the double mold chains of the belt device (5) taken along the line 15A-A in Fig. 1.
Kuvio 3 esittaa keksinnon mukaisen lampoeristetyn johtoputken 7 poikkileikkausta.Figure 3 shows a cross-section of a thermally insulated conduit 7 according to the invention.
Kuvio 4 esittaa poikkileikkausta putkiliitoskappa-leesta 12.Figure 4 shows a cross-section of the pipe connection piece 12.
20 Kuvioissa 1-4 ja myohemmin seuraavissa rakenteissa on viitenumeroilla seuraava merkitys: 1 johtoputki 2 erotuskalvon varastorulla 3 erotuskalvo 25 4 vaahdotuskone 5 kaksoismuottiketjuhihnalaite 5a, 5b, 5a' ja 5b' muottiketjun muodostavat muottilohkot 6 tyhjiokalibroitu ekstruuderi 30 7 lampoeristetty johtoputki 8 muottilohkojen 5a, 5b avulla muodostettu muottikanava 9 teline muottilohkoketjujen ohjausta vårten 10 lampoeristava vaahtomuovikerros 35 10 11 vaahdotettu muovisuojavaippa 12 putkiliitoskappaleIn Figures 1-4 and later, the following numerals have the following meanings: 1 guide tube 2 separating film storage roll 3 separating film 25 4 flotation machine 5 formed mold channel 9 rack for control of mold block chains 10 thermally insulating foam layer 35 10 11 foamed plastic protective sheath 12 pipe connection piece
Kuviossa 1 kaaviomaisesti esitetty kaksoismuotti-ketjuhihnalaite 5 sisaltaa kaksi muottipuoliskoa 5 jaettuina pituussuuntaisesti yksittåisiin muottilohkoihin 5af 5b, 5a' ja 5b'f nåiden muottipuoliskoiden liikkuessa suoraa linjaa pitkin yhtålåisellå nopeudella. Yksittåi-set muottilohkot 5a, 5b muodostavat tiukasti yhteenpuris-tettuina tarvittavan muottikanavan ja ne kåånnetaån ja 10 johdetaan valmistusalueen ulkopuolella erillisina muotti-lohkoina 5a', 5b# (ks. kuvio 2) ohjaustelineeseen 9 sinån-sa tunnetulla tavalla. Muottilohkot 5a, 5b voidaan johto-putken kulloiseenkin låpimittaan tai tulokseksi saatuun låmpoeriståvåån vaahtomuovivaippaan sovittamista vårten 15 vaihtaa.The double mold-chain belt device 5 schematically shown in Fig. 1 comprises two mold halves 5 divided longitudinally into individual mold blocks 5af 5b, 5a 'and 5b'f As these mold halves move in a straight line at a uniform speed. The individual mold blocks 5a, 5b form the required mold channel in a tightly compressed manner and are turned and guided outside the manufacturing area as separate mold blocks 5a ', 5b # (see Fig. 2) to the guide stand 9 in a manner known per se. The mold blocks 5a, 5b can be changed to accommodate the respective diameter of the conduit tube or the resulting thermal insulating foam jacket.
Esilla olevan keksinnon eråån suositeltavan sovel-lutusmuodon mukaisesti syotetaan esiroerkiksi taipuisa kupari- tai muoviputki varastorullalta ohjaus- ja pidå-tyslaitteen vålityksella kaksoismuottiketjuhihnalaitteen 20 5 suuntauslaitteeseen yhdessa varastorullalta 2 kelatun erotuskalvon 3 kanssa, jolloin erotuskalvo 3 ennen tu-loaan kaksoismuottiketjuhihnalaitteeseen 5 varustetaan vaahdotuskoneen 4 avulla vaahdotettavalla seoksella ja muodostetaan letkuksi. Låhdettyåan kaksoismuottiketju-25 hihnalaitteesta 5 johdetaan vaahtomuovikerroksella 10 varustettu johtoputki 1 tyhjiokalibrointilaitteen sisål-tåvåan ekstruuderiin 6, jossa erotuskalvolle 3 levitetåan varsinainen ominaispainoltaan korkea vaahdotettu vaahto-muovivaippa 11. Tallå tavoin valmistettu låmpoeriståvå 30 johtoputki 7 (ks. kuvio 3) kelataan sitten kuljetusrul-lalle ja tuodaan kåyttopaikalle, jossa se kelataan rul-lalta kåyttoon.According to a preferred embodiment of the present invention, a flexible copper or plastic pipe is fed as a pre-sensitive from the storage roll via a guide and holding device to the directing device mixture and formed into a tube. After leaving the double mold chain-25 belt device 5, a guide tube 1 with a foam layer 10 is fed to an extruder 6 inside a vacuum calibration device, where the actual high-density foamed foam jacket 11 and brought to the site of use where it is wound from a roll to use.
Esilla olevan keksinnon eråan toisen suositeltavan sovellutusmuodon mukaisesti syotetaan jåykåt, taipumatto-35 91374 11 mat låpimitaltaan suuremmat ja pituudeltaan 6 - 18 in, so-pivimmin 12 - 18 m, olevat johtoputket kuviossa 1 nåky-måttomåltå varastotelineeltå kuviossa myos nåkymåttdmån kaksoismuottiketjuhihnalaitteen 5 syotto- ja pidatys-5 laitteen valityksella yhdessa erotuskalvon 3 ja vaahdo-tettavan seoksen kanssa edellå selostetulla tavalla. Jat-kuvan toiminnan takaamiseksi liitetaån eristettåvat johtoputket 1 peråkkåin yhteen kuviossa 4 nåkyvien putki-liitoskappaleiden 12 avulla ja johdetaan nåennaisesti 10 pååttymåttomånå putkena kaksoismuottiketjuhihnalaitteen 5 låpi. Putkiliitoskappaleet on ulko- ja sisålåpimital-taan sovitettu kunkin johtoputken 1 ja halutun låmpo-eristavan vaahtomuovikerroksen 10 mukaisesti. Låhdettyåån tyhjiokalibrointilaitteella varustetusta ekstruuderista 15 6 ja muovisuojavaipan 11 kiinnittamisen jålkeen sahataan ulkoapain nåkymåttomat putkiliitoskappaleet 12 ohjatun sahan avulla keskeisesti poikittain pituusakselin suh-teen. Tållå tavoin uudelleen erotetut låmpoeriståvåt johtoputket johdetaan tukitelineen kautta pakkaus- tai 20 niputusyksikkoon. Låpileikatut putkiliitoskappaleet jåå-våt sopivimmin asennukseen asti liitetyiksi låmpoeristå-viin johtoputkiin ja ne poistetaan vasta hieman ennen johtoputkien asennusta.According to another preferred embodiment of the present invention, rigid, non-rigid, 35 91374 11 m in diameter and 6 to 18 in. by holding the holding-5 device together with the separating film 3 and the foamable mixture as described above. In order to guarantee the operation of the JAT image, the insulated conductor pipes 1 are connected in series together by means of the pipe fittings 12 shown in Fig. 4 and are passed as a seemingly endless pipe 10 through a double mold chain belt device 5. The outer and inner diameters of the pipe fittings are adapted to each conduit 1 and the desired heat-insulating foam layer 10. After leaving the extruder 15 6 equipped with the vacuum calibration device and attaching the plastic sheath 11, the invisible pipe fittings 12 are sawn by means of a guided saw transversely transversely to the longitudinal axis. The thermally insulated conduits thus re-separated are led via a support bracket to a packaging or bundling unit. The cut-through pipe fittings are preferably connected to the thermally insulated conduits until installation and are only removed shortly before the installation of the conduits.
Putkiliitoskappaleet 12 voidaan tietenkin ottaa 25 myos suoraan pois ekstruuderin 6 tyhjiokalibrointilait-teesta låhtevistå låmpoeriståvistå johtoputkista 7, jol-loin nåitå ehjiå putkiliitoskappaleita 12 voidaan niiden påållå olevan muovisuojavaipalla 11 varustetun erotuskalvon 3 irrottamisen jålkeen kåyttåå uudelleen. Ilman 30 putkiliitoskappaleita 12 olevat låmpoeriståvåt johtoputket 7 voidaan tålloin varustaa muunlaisilla suoja-vaipoilla kuljetusta vårten asennukseen asti, nåin halut-taessa.Of course, the pipe fittings 12 can also be removed directly from the thermally insulating conduits 7 leaving the vacuum calibration device of the extruder 6, whereby these intact pipe fittings 12 can be removed by a separator with a plastic protective jacket 11 on top of them. The thermally insulating conduits 7 without the pipe fittings 12 can then be provided with other types of protective sheaths until the installation of the transport handles, if desired.
Eråånå toisena keksinnon mukaisella tavalla kåy-35 12 tetyn putkiliitoskappaleen 12 tarjoamana etuna on se, ettå putkiliitoskappaleen 12 poistamisen jalkeen putki-johdon paat tulevat heti vapaiksi myohemrain tarvittavaa tavallista kestavaa ja tiivista putkimuhviliitåntåa 5 vårten.Another advantage provided by the pipe fitting 12 used in accordance with the invention is that, after removal of the pipe fitting 12, the ends of the pipeline are immediately free of the usual durable and tight pipe socket connection 5 required for myohemrain.
1010
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE3530187 | 1985-08-23 | ||
DE3530187A DE3530187C2 (en) | 1985-08-23 | 1985-08-23 | Method and device for producing thermally insulated conduits |
Publications (4)
Publication Number | Publication Date |
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FI863423A0 FI863423A0 (en) | 1986-08-22 |
FI863423A FI863423A (en) | 1987-02-24 |
FI91374B FI91374B (en) | 1994-03-15 |
FI91374C true FI91374C (en) | 1994-06-27 |
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Application Number | Title | Priority Date | Filing Date |
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FI863423A FI91374C (en) | 1985-08-23 | 1986-08-22 | Method for continuous fabrication of a thermally insulated pipeline with a plastic sheath |
Country Status (12)
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AT (1) | AT398053B (en) |
BE (1) | BE905325A (en) |
CH (1) | CH671543A5 (en) |
DE (1) | DE3530187C2 (en) |
DK (1) | DK165908C (en) |
FI (1) | FI91374C (en) |
FR (1) | FR2589981B1 (en) |
IT (1) | IT1197108B (en) |
LU (1) | LU86559A1 (en) |
NL (1) | NL8602141A (en) |
NO (1) | NO175625C (en) |
SE (1) | SE468827B (en) |
Families Citing this family (11)
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DK157409C (en) † | 1987-09-28 | 1990-05-28 | Moeller As I C | REMOVAL HEATING ELEMENT WITH COPPER CONDUCTING ROOMS, PIPING STRAIGHT WITH SUCH ITEMS AND PROCEDURE FOR INTERPRETING SUCH PIPES |
DE3744108A1 (en) * | 1987-12-24 | 1989-07-06 | Grohe Kg Hans | SHOWER HOSE AND METHOD FOR THE PRODUCTION THEREOF |
DE4142178C2 (en) * | 1991-12-20 | 1993-10-28 | Babcock Sonderbau Gmbh | Insulation of lines and a method for applying the insulating layer |
DE19629678A1 (en) * | 1996-07-23 | 1998-01-29 | Brugg Rohrsysteme Gmbh | Corrugated pipe with double walls enclosing foam insulation |
US7824595B2 (en) * | 2004-08-13 | 2010-11-02 | Perma-Pipe, Inc. | Method and system for cast molding a fluid conduit |
ITMI20091705A1 (en) | 2009-10-05 | 2011-04-06 | Afros Spa | METHOD AND EQUIPMENT TO COVER A PIPE WITH A THERMAL INSULATING FOAM. |
AT509229B1 (en) * | 2010-02-26 | 2011-07-15 | Isoplus Fernwaermetechnik Ges M B H | METHOD FOR PRODUCING A COMPOSITE TUBE |
EP2431158A1 (en) | 2010-09-16 | 2012-03-21 | MKM Mansfelder Kupfer und Messing GmbH | Method for producing thermally insulated tubes, in particular copper tubes |
US9421571B2 (en) | 2011-11-28 | 2016-08-23 | Basf Se | Process for producing insulated jacketed pipes by a continuous production process |
WO2013079455A1 (en) * | 2011-11-28 | 2013-06-06 | Basf Se | Method for producing insulated casing pipes in a continuous production process |
AT517431A1 (en) * | 2015-07-01 | 2017-01-15 | Radius-Kelit Infrastructure Gesmbh | Multilayer pipe |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1987451U (en) * | 1968-06-12 | Kabel und Metall w erke Gutehoffnungshutte Aktiengesellschaft 3000 Hannover | Warm and soundproof pipe | |
DE1704748C3 (en) * | 1951-01-28 | 1974-11-28 | Kabel Metallwerke Ghh | Process for the continuous production of thermally insulated pipes |
FR94389E (en) * | 1966-09-07 | 1969-08-08 | Ugine Kuhlmann | Process and device for the extrusion of expandable plastic materials. |
DE1266485C2 (en) * | 1966-11-21 | 1975-08-14 | Elastomer Ag, Chur (Schweiz) | DEVICE FOR THE CONTINUOUS PRODUCTION OF A FOAM INSULATION PIPE |
DE2141475A1 (en) * | 1971-08-19 | 1973-03-01 | Kabel Metallwerke Ghh | PROCESS FOR MANUFACTURING THERMAL AND SOUND INSULATED PIPES |
US3876355A (en) * | 1972-11-20 | 1975-04-08 | B & B Insulation Inc | Pipe insulating system and apparatus therefor |
DE2305348A1 (en) * | 1973-02-03 | 1974-08-08 | Kabel Metallwerke Ghh | METHOD FOR MANUFACTURING THERMAL INSULATED PIPES |
DE2458775A1 (en) * | 1974-12-12 | 1976-06-16 | Kabel Metallwerke Ghh | Insulated metal conduit with hot melt adhesive intermediate layer - contg. ethylene vinyl acetate copolymer, or polyamide or polyester, for use at high temps |
DE2803708C3 (en) * | 1978-01-28 | 1980-09-25 | Reifenhaeuser Kg, 5210 Troisdorf | Plant for the production of a flexible multilayer insulating pipe |
GB2046865B (en) * | 1979-03-15 | 1983-06-15 | Kendall & Co | Insulation of pipe by multi-stage application of foam |
JPS5624289A (en) * | 1979-07-31 | 1981-03-07 | Furukawa Electric Co Ltd | Adiabatic pipe and its manufacture |
IT1124499B (en) * | 1979-12-14 | 1986-05-07 | Severino Zecchin | PROCEDURE FOR THE CONTINUOUS COATING OF LONG-LINE PRODUCTS WITH EXPANDED TYPE MATERIAL, PARTICULARLY SUITABLE FOR PIPING THERMO-HYDRAULIC PLANTS |
DE3045198A1 (en) * | 1980-12-01 | 1982-07-22 | Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover | Flexible insulated pipe - has jacket of extruded foamed mixt. of polypropylene and rubber |
DE3307865A1 (en) * | 1983-03-05 | 1984-09-06 | kabelmetal electro GmbH, 3000 Hannover | HEAT-INSULATED PIPE AND METHOD FOR THE PRODUCTION THEREOF |
-
1985
- 1985-08-23 DE DE3530187A patent/DE3530187C2/en not_active Expired - Fee Related
-
1986
- 1986-08-11 FR FR868611583A patent/FR2589981B1/en not_active Expired - Fee Related
- 1986-08-21 CH CH3357/86A patent/CH671543A5/de not_active IP Right Cessation
- 1986-08-22 DK DK402186A patent/DK165908C/en not_active IP Right Cessation
- 1986-08-22 LU LU86559A patent/LU86559A1/en unknown
- 1986-08-22 AT AT0226986A patent/AT398053B/en not_active IP Right Cessation
- 1986-08-22 SE SE8603549A patent/SE468827B/en not_active IP Right Cessation
- 1986-08-22 IT IT21511/86A patent/IT1197108B/en active
- 1986-08-22 NO NO863378A patent/NO175625C/en unknown
- 1986-08-22 NL NL8602141A patent/NL8602141A/en not_active Application Discontinuation
- 1986-08-22 BE BE0/217079A patent/BE905325A/en not_active IP Right Cessation
- 1986-08-22 FI FI863423A patent/FI91374C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NO863378L (en) | 1987-02-24 |
IT1197108B (en) | 1988-11-25 |
SE8603549L (en) | 1987-02-24 |
DK402186D0 (en) | 1986-08-22 |
LU86559A1 (en) | 1986-12-02 |
SE8603549D0 (en) | 1986-08-22 |
NO175625C (en) | 1994-11-16 |
ATA226986A (en) | 1994-01-15 |
DE3530187C2 (en) | 1994-12-01 |
DK165908B (en) | 1993-02-08 |
FR2589981B1 (en) | 1990-04-06 |
FI863423A0 (en) | 1986-08-22 |
NL8602141A (en) | 1987-03-16 |
IT8621511A1 (en) | 1988-02-22 |
DK165908C (en) | 1993-06-28 |
NO175625B (en) | 1994-08-01 |
BE905325A (en) | 1986-12-16 |
FI863423A (en) | 1987-02-24 |
AT398053B (en) | 1994-09-26 |
NO863378D0 (en) | 1986-08-22 |
IT8621511A0 (en) | 1986-08-22 |
DK402186A (en) | 1987-02-24 |
FR2589981A1 (en) | 1987-05-15 |
SE468827B (en) | 1993-03-22 |
FI91374B (en) | 1994-03-15 |
DE3530187A1 (en) | 1987-03-05 |
CH671543A5 (en) | 1989-09-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB | Publication of examined application | ||
MM | Patent lapsed | ||
MM | Patent lapsed |
Owner name: NOEL, MARQUET & CIE. S.A. Owner name: LOGSTOR RORINDUSTRI A/S |