DK157098B - PROCEDURE FOR MAKING A HEAT-INSULATED CONNECTOR - Google Patents
PROCEDURE FOR MAKING A HEAT-INSULATED CONNECTOR Download PDFInfo
- Publication number
- DK157098B DK157098B DK101183A DK101183A DK157098B DK 157098 B DK157098 B DK 157098B DK 101183 A DK101183 A DK 101183A DK 101183 A DK101183 A DK 101183A DK 157098 B DK157098 B DK 157098B
- Authority
- DK
- Denmark
- Prior art keywords
- sheath
- tape
- coil
- foam
- jacket
- 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
- F16L59/06—Arrangements using an air layer or vacuum
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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
- 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
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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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- 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 which is added to the object to be insulated by pouring, spreading, spraying or the like
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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
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)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
DK 157098 BDK 157098 B
Den foreliggende opfindelse angâr en fremgangsmâde til frem-stilling af et varmeisoleret ledningsr0r, der bestâr af et metalr0r, et dette omgivende skumstoflag og en over laget be-liggende kappe af termoplastisk plast, hvor kappen ved hjælp 5 af en ekstruder under friholdelse af et ringformet mellemrum ekstruderes rundt om metalreret, ved hvilken samtidigt et bând-formet bæreorgan, hvorpâ der befinder sig en opskummelig plaststofblanding til at frembringe et skumstoflag, kontinu-erligt indf0res i mellemrummet, ved hvilken der endvidere, f0r 10 kappen ekstruderes pâ metalr0ret, kontinuerligt pâf0res en spiral af skumstof, og ved hvilken kappen afk0les efter ekstrusionen, hvilken fremgangsmâde sâledes er af den fra DE-OS nr. 27 00 478 kendte art.BACKGROUND OF THE INVENTION The present invention relates to a method of manufacturing a heat insulated conduit consisting of a metal tube, this surrounding foam layer and a thermoplastic plastic overcoat, wherein the jacket is supported by an extruder while retaining an annular spacers are extruded around the metal tube, at which at the same time a tape-shaped carrier on which is a foamable plastic composition to produce a foam layer is continuously inserted into the space, whereby, before the jacket is extruded on the metal tube, a continuous tube a foam of spiral, and by which the jacket is cooled after the extrusion, which is thus of the kind known from DE-OS No. 27 00 478.
Sâdanne ledningsr0r benyttes f,eks. til varmt- og koldtvands-15 installationer og især til opvarmningsanlæg. Det metalr0ret omgivende skumstoflag danrier i forbindelse med den ydre glatte kappe en god beskyttelse mod varmetab, svedevand og instal-lationsst0j. Den ydre kappe beskytter det f0lsomme skumstoflag mod mekanisk beskadigelser og mod fugt. Desuden forbedres 20 ledningsr0rets æstetiske udseende ved hjælp af den udvendige glatte kappe. Generelt er sâdanne ledningsr0r særlig nemme at montere, da de er godt b0jelige, og de kan uden store om-kostninger ved en enkel forbindelsesteknik forbindes med an-dre r0rledninger til et r0rnet.Such wiring is used e.g. for hot and cold water installations and especially for heating systems. The metal-stirred foam layer surrounds, in connection with the outer smooth jacket, good protection against heat loss, sweat and installation noise. The outer sheath protects the sensitive foam layer against mechanical damage and moisture. In addition, the aesthetic appearance of the 20 conduit is enhanced by the outer smooth sheath. Generally, such conduits are particularly easy to assemble, since they are well flexible and can be connected to other conduits without a large cost by a simple connecting technique.
25 Fra DE-OS 27 00 478 kendes en fremgangsmâde af den ovenfor omtalte art. Ved denne kendte fremgangsmâde afk01es kappen kraftigt umiddelbart efter spr0jtningen,for at kappen fâr en tilstrækkelig styrke i forhold til det skumstof, der spreder sig inden i denne. Ved rigtig materialevalg og tilstrækkeligt 30 hurtig afk0ling af kappen er denne fremgangsmâde godt gennem-f0rlig. Man kan herved ogsâ fremstille ledningsr0r, der er tilstrækkelige til at overholde de stillede mekaniske krav.25 From DE-OS 27 00 478 a method of the kind mentioned above is known. In this known method, the sheath is strongly decocted immediately after spraying in order to obtain a sufficient strength relative to the foam which spreads within it. With proper material selection and sufficient quick cooling of the jacket, this process is well-practicable. It is also possible herewith to produce conduits sufficient to meet the mechanical requirements.
Nâr man under fremstillingens forl0b ikke overholder aile paramétré inden for forholdsvis snævre grænser, kan det imid-35 lertid nemt ske, at kappen pâ ukontrolleret mâde déformeresHowever, if during the manufacturing process, all parameters are not complied with within relatively narrow limits, it can easily happen that the jacket is deformed in an uncontrolled manner.
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2 af det indefra trykkende skumstof. I denne forbindelse kan de.t især komme til blæredannelse i kappen, og det kan i sâ fald heller ikke udelukkes, at kappen punkterer, sâledes at ledningsr0ret bliver ubrugeligt.2 of the foam pressurized from the inside. In this connection, they may in particular cause blistering in the sheath, and in this case it cannot be excluded that the sheath is punctured, so that the conduit becomes unusable.
5 Det er den foreliggende opfindelses formai at anvise en frem-gangsmâde af den indledningsvis beskrevne art, ved hvilken det pâ en enkel mâde sikres, at den 0nskede cirkelrunde form for kappen bevares hen over hele iedningsr0rets længde, uden at man beh0ver at frygte for en punktering af kappen.It is the object of the present invention to provide a method of the kind described in the introduction, in which it is simply ensured that the desired circular shape of the jacket is maintained over the entire length of the irrigation tube without having to fear a puncture of the sheath.
10 Dette formâl tilgodeses if0lge opfindelsen ved, at den indledningsvis omtalte fremgangsmâde er ejendommelig ved - at et i længderetningen indl0bende bând kontinuerligt formes til et om kappen lagt r0r, der lukkes tæt ved sit i læng- 15 deretningen forl0bende overlapningssted, og - at bândet, efter at ledningsr0ret har genneml0bet en til-strækkelig strækning til fuldstændig opskumning af plast-blandingen, igen aftages fra kappen.This object is met in accordance with the invention in that the method mentioned in the introduction is characterized in that - a longitudinally extending tape is continuously formed into a casing which is closed close to its longitudinal overlap location, and - the tape, after the conduit has undergone a sufficient stretch to completely foam the plastic mixture, again be removed from the sheath.
Til at gennemf0re denne fremgangsmâde kan man fortsat uden 20 ændringer benytte de hidtil almindelige fremstillingsindret-ninger for varmeisolerede ledningsr0r. Ved at bândet kontinuerligt formes som et fast r0r om kappen, fâr màn en rundt-gâende fast underst0tning af kappen. Kappen, der efter at hâve forladt ekstruderen endnu er forholdsvis bl0d, beh0ver 25 derfor kun at blive afk0let et 0jeblik, for at den fâr en noget bedre mekanisk stabilitet. Den underst0ttes ved hjælp af det i tilslutning hertil som fast r0r derom formede bând mekanisk pâ en sâdan mâde, at den opskummende plastblandings indvendigt virkende kræfter opfanges. Det pâ bândet dannede 30 r0r beh0ver i denne forbindelse ved sin formning pâ ingen mâde at ligge tæt an mod kappen. R0ret giver tværtimod kappen dens endelige mâl, hvorved kappen ogsâ kan udvides liât ved hjælp af den opskummende plastblanding. Efter at hâve* 3In order to carry out this process, it is still possible to use, without 20 modifications, the hitherto common manufacturing devices for heat insulated conduits. By continuously forming the tape as a solid tube around the sheath, one gets a circumferential solid support of the sheath. The jacket, which after leaving the extruder is still relatively soft, therefore needs only to be cooled for a moment in order to obtain a somewhat better mechanical stability. It is supported mechanically by means of the tape which is attached thereto as a fixed tube in such a way that the internally acting forces of the foaming plastic mixture are absorbed. The 30 tubes formed on the tape need, in this connection, by its shaping in no way abut close to the sheath. On the contrary, the tube provides its final dimensions, whereby the sheath can also be extended by means of the foaming plastic mixture. After raising * 3
DK 157098 BDK 157098 B
genneml0bet den efterf0lgende fremstillingsvej kan kappen afk0les yderligere.Through the subsequent manufacturing path, the jacket can be cooled further.
Efter at hâve passeret fremstillingsvejen, inden for hvilken plastblandingens opskumningsproces er afsluttet, kan det om 5 r0ret formede bând igen fjernes. Pâ denne mâde sikres det, at ledningsr0ret opnâr et cirkulært tværsnit, hvorved især kappens cirkelrunde form kan garanteres hen over hele læng-den. Man har med sikkerhed undgâet den risiko, at der ved den opskummende plastblanding indtræder en deformering af 10 kappen, eller at denne punkterer eller revner.After passing the manufacturing path, within which the foam mixing process of the plastic mixture is completed, the tape may be removed in 5 tubes. In this way, it is ensured that the conduit achieves a circular cross section, whereby in particular the circular shape of the sheath can be guaranteed over its entire length. The risk has been avoided that the foamy plastic mixture will deform the casing or that it will puncture or crack.
Fremgangsmâden if0lge opfindelsen forklares nedenfor i form af et udf0relseseksempel pâ grundlag af tegningen, hvor fig. 1 er en skematisk gengivelse af et udsnit af en indret-ning til at gennemf0re fremgangsmâden og 15 fig. 2-5 tværsnit gennem fig. 1 langs linierne II-II til V-V.The method according to the invention is explained below in the form of an embodiment according to the drawing, in which fig. 1 is a schematic representation of a section of a device for carrying out the method; and FIG. 2-5 cross section through FIG. 1 along lines II-II to V-V.
Pâ tegningen ses et metallisk r0r 1, der ved fremgangsmâden if0lge opfindelsen skal forarbejdes til et varmeisoleret ledningsr0r. Ved et sâdant metalr0r drejer det sig fortrins-vis om et kobberr0r, der ved en speciel gl0debehandling har 20 fâet indstillet de mekaniske egenskaber pâ en sâdan mâde, at det er godt b0jeligt. Rundt om metalr0ret 1 er der viklet en spiral 2 af skumstof, hvilken spiral kan være udformet trækfast ved hjælp af et som bærer fungerende, gennemgâende papirbând. Spiralen kan med sædvanlige viklingsmaskiner vik-25 les om metalr0ret 1. Som skumstof kan man her f.eks. benyt-te en opskummet polyurethan.The drawing shows a metallic pipe 1, which in the process according to the invention is to be processed into a heat insulated conduit. In such a metal pipe it is preferably a copper pipe which, by a special annealing treatment, has had the mechanical properties adjusted in such a way that it is well flexible. Around the metal tube 1 a foam 2 coil 2 is wound, which coil can be designed tensile with the aid of a continuous paper tape which acts as a carrier. With the usual winding machines, the coil can be wound around the metal tube 1. As a foam material, for example, it can be used here. used a foamed polyurethane.
Metalr0ret 1 forskydes videre sammen med spiralen 2 i retning af pilen 3. Ad denne vej nâr r0ret ind i en ekstruder 4, ved hvilken der om metalr0ret 1 henholdsvis spiralen 2 ekstruderes 30 en kappe 5 af termoplastisk plast. Denne kappe ligger an imod spiralen 2.The metal tube 1 is further displaced together with the coil 2 in the direction of the arrow 3. On this path, when the tube enters an extruder 4, by which about the metal tube 1 and the coil 2, respectively, a jacket 5 of thermoplastic plastic is extruded. This sheath abuts the coil 2.
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44
Samtidig med metalr0ret 1 k0res en bândformet bærer 6, der afvikles fra en spole 7, kontinuerligt med ind i ekstruderen 4. Denne bândformede bærer b0jes i en formningsindretning 8 noget i tværretningen. Ved hjælp af en doseringsindretning 5 9 spr0jtes en opskummelig plastblanding 10 pâ bæreren 6.At the same time as the metal tube 1, a tape-shaped carrier 6, unwound from a coil 7, is continuously driven into the extruder 4. This tape-shaped carrier is bent slightly in the transverse direction in a forming device 8. By means of a dosing device 49, a foamable plastic mixture 10 is sprayed onto the carrier 6.
Denne plastblanding indstilles fortrinsvis sâledes, at det afhængig af fremstillingshastigheden f0rst efter en forholds-vis lang tid begynder at skumme op. Som materiale kan man ogsâ her benytte en blanding pâ polyurethanbasis. Den op-10 skummelige plastblanding 10 transporteres af den som "transportbând" tjenende bærer6 kontinuerligt ind i det mel-lem metalr0ret 1 henholdsvis spiralen 2 og kappen 5 resteren-de ringformede mellemrum.This plastic mixture is preferably adjusted so that, depending on the manufacturing speed, it starts to foam up only after a relatively long time. As a material one can also use a mixture on a polyurethane basis. The foamy plastic mixture 10 is transported continuously by the carrier "as a conveyor belt" 6 into the intermediate metal tube 1 and spiral 2, respectively, of the annular spacing remaining.
Kappen 5 bestâr af et termoplastisk isolationsmateriale.The jacket 5 consists of a thermoplastic insulating material.
15 Her benyttes fortrinsvis polyvinylchlorid, hvis egenskaber er indstillet sâledes, at ogsâ den færdige,k0lede kappe 5 sta-digvæk er godt b0jelig. Som materiale til bæreren 6 er f.eks. papir, især crepepapir, egnet.Here, polyvinyl chloride is preferably used, the properties of which are adjusted such that the finished cooled jacket 5 is permanently flexible. As material for the carrier 6, e.g. paper, especially crepe paper, suitable.
Kappen afk0les efter at hâve forladt ekstruderen 4 i en kun 20 skematisk antydet k0leindretning 11 i et kort tidsrum, sâledes at den opnâr en tilstrækkelig mekanisk stabilitet. Bag ved k0leindretningen 11 formes der om kappen 5 et tyndt bând 12, der ligger fast an imod kappen 5's overflade. Dette bând trækkes af en spole 13. Det formes omkring kappen 5, idet 25 det l0ber ind i længderetningen, hvorunder det fâr sin r0r-formede form ved hjælp af en formningsindretning 14. Ved denne formning omkring kappen fremkommer der for bândet 12 et i længderetningen forl0bende overlapningssted 15 (fig. 5), ved hvilket bândet ved hjælp af et klæbemiddel kan sammen-30 klæbes til et fast r0r, der har en tilstrækkelig mekanisk styrke. Det hertil n0dvendige klæbemiddel kan f.eks. pâf0-res overlapningsstedet 15 ved hjælp af en indretning 16.The jacket is cooled after leaving the extruder 4 in a only 20 schematically indicated cooling device 11 for a short period of time so as to obtain sufficient mechanical stability. Behind the cooling device 11, a thin band 12 is formed around the jacket 5, which adheres firmly to the surface of the jacket 5. This band is pulled by a coil 13. It is formed around the sheath 5 as it runs longitudinally, under which it takes its tube-shaped shape by means of a forming device 14. This formation around the sheath 12 results in a longitudinal direction. extending overlap site 15 (Fig. 5), by which the tape can be bonded to a fixed tube having a sufficient mechanical strength by means of an adhesive. The adhesive required for this may e.g. the overlap point 15 is applied by means of a device 16.
Ved denne procès er bândet 15 sâ lukket fast til et r0r, sâledes at det kan tjene som en fast underst0tning for kappen 35 5, nâr denne stâr under det indefra virkende tryk af den op- 5In this process, the tape 15 is so tightly closed to a tube so that it can serve as a fixed support for the sheath 35 5 when it is under the inside pressure of the tube.
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skummende plastblanding 10.foamy plastic mixture 10.
Den opskummelige plastblanding 101 s komponenter er indstillet sâledes, at det ganske vist kan begynde at skumme op inden for ekstruderen 4, men at den end.eli.ge opskumning f0rst sker 5 senere. Denne opskumning skal f0rst være fuldt virksom, nâr bândet 12 er sammenklæbet til et fuldstændigt fast r0r. Der-efter kan opskumningsproceduren gennemf0res fuldstændigt.The foamable plastic blend 101's components are set so that it may start to foam up within the extruder 4, but that the final foaming will only occur 5 later. This foaming must first be fully effective when the tape 12 is glued to a completely solid tube. Thereafter, the foaming procedure can be carried out completely.
Den kan være afsluttet efter en produktionsvej pâ f.eks. 50 m. Efter denne produktionsvejs genneml0b ud0ves der ikke mere 10 noget indre tryk mod kappen 5, sâledes at bândet 12 igen kan fjernes fra denne. Det derpâ færdige, varmeisolerede led-ningsr0r kan opvikles pâ en spole.It may be completed following a production path of e.g. 50 m. After the passage of this production route, no more internal pressure is exerted on the sheath 5, so that the belt 12 can again be removed from it. The finished, heat-insulated conduit can be wound on a coil.
For at bândet 12 ved opskumningsvejens afslutning forholds-vis enkelt igen kan aftages fra kappen, er det hensigtsmæs-15 sigt at lade en i fig. 5 antydet rivefast trâd 17 l0be med, hvilken trâd kontinuerligt indf0res under bândet 12 og der-efter kan benyttes til at rive dette op, nâr bândet ved opskumning svej ens ende igen skal aftages. For at der ikke skal ske nogen indtrykninger i kappen 5 pâ grund af trâden 20 17, er det hensigtsmæssigt at indbygge den i overlapnings- stedet 15, jf. det i fig. 5 viste.In order that the band 12 at the end of the foam path can be relatively easily removed from the sheath, it is appropriate to allow one in FIG. 5, the tear-resistant wire 17 is indicated to run, which wire is continuously inserted under the tape 12 and can then be used to tear it up when the tape has to be welded off again at the end of the foam. In order not to make any impressions in the casing 5 due to the thread 20 17, it is appropriate to incorporate it in the overlap location 15, cf. 5.
Til bândet 12 kan man benytte ethvert egnet, tilstrækkeligt fast materiale, der ogsâ kan sammenklæbes pâ enkel mâde.For the tape 12, any suitable, sufficiently solid material may be used which may also be adhered in a simple manner.
Særlig hensigtsmæssigt benyttes et mekanisk fast papir.Particularly suitable is a mechanical solid paper.
25 Kappen 5 kan pâspr0jtes metalr0ret 1 henholdsvis spiralen 2 som et glat r0r henholdsvis en glat slange. Det er imidler-tid ogsâ muligt at profilere kappen 5 indvendigt, sâledes at den pâ indersiden har fremspring 18, der er indbyrdes ad-skilt ved hjælp af i længderetningen forl0bende kanaler. En 30 sâdan udf0relsesform er vist i fig. 4 og 5. Fremspringene 18 har fortrinsvis en trekantet form, sâledes at der fremkommer indad visende spidser. En sâdan kappe har i forhold til en glat slange henholdsvis et glat r0r de fordele, at den i sinThe sheath 5 can be sprayed onto the metal tube 1 and the spiral 2, respectively, as a smooth tube and a smooth tube, respectively. However, it is also possible to profile the sheath 5 internally, so that it has on the inside projections 18 which are spaced apart by longitudinal channels. One such embodiment is shown in FIG. 4 and 5. The projections 18 preferably have a triangular shape so that inwardly projecting tips appear. Such a sheath has, relative to a smooth hose or a smooth tube, the advantages that it has in its
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3208724A DE3208724A1 (en) | 1982-03-11 | 1982-03-11 | Process for producing a thermally insulated conduit pipe |
| DE3208724 | 1982-03-11 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| DK101183D0 DK101183D0 (en) | 1983-02-28 |
| DK101183A DK101183A (en) | 1983-09-12 |
| DK157098B true DK157098B (en) | 1989-11-06 |
| DK157098C DK157098C (en) | 1990-04-02 |
Family
ID=6157879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK101183A DK157098C (en) | 1982-03-11 | 1983-02-28 | PROCEDURE FOR MAKING A HEAT-INSULATED CONNECTOR |
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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997048942A1 (en) * | 1996-06-20 | 1997-12-24 | Rockwool International A/S | A process for continuous preparation of pipe sections with foil |
Families Citing this family (5)
| 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. |
| EP2586602B1 (en) | 2010-06-28 | 2018-10-17 | Obschestvo S Ogranichennoy Otvetstvennostiyu "Smit-Yartsevo" | Method for manufacturing a thermally insulated flexible tube |
| WO2012039638A1 (en) | 2010-09-20 | 2012-03-29 | Общество С Ограниченной Ответственностью "Cmиt-Яpцebo" | Line for manufacturing a 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 JP JP58038405A patent/JPS58185234A/en active Granted
- 1983-03-10 SE SE8301293A patent/SE447014B/en not_active IP Right Cessation
- 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
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997048942A1 (en) * | 1996-06-20 | 1997-12-24 | Rockwool International A/S | A process for continuous preparation of pipe sections with foil |
Also Published As
| Publication number | Publication date |
|---|---|
| BE896124A (en) | 1983-09-12 |
| DE3208724A1 (en) | 1983-09-22 |
| IT1197599B (en) | 1988-12-06 |
| DK157098C (en) | 1990-04-02 |
| DE3208724C2 (en) | 1991-05-29 |
| SE8301293L (en) | 1983-09-12 |
| JPS58185234A (en) | 1983-10-28 |
| DK101183D0 (en) | 1983-02-28 |
| FR2523264B1 (en) | 1987-07-24 |
| SE447014B (en) | 1986-10-20 |
| DK101183A (en) | 1983-09-12 |
| FR2523264A1 (en) | 1983-09-16 |
| IT8347869A0 (en) | 1983-03-08 |
| JPH0346301B2 (en) | 1991-07-15 |
| SE8301293D0 (en) | 1983-03-10 |
| SU1449025A3 (en) | 1988-12-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUP | Patent expired |