DK154484B - PROCEDURE FOR APPLICATION OF CLOTHING COATS ON PIPES - Google Patents
PROCEDURE FOR APPLICATION OF CLOTHING COATS ON PIPES Download PDFInfo
- Publication number
- DK154484B DK154484B DK518378AA DK518378A DK154484B DK 154484 B DK154484 B DK 154484B DK 518378A A DK518378A A DK 518378AA DK 518378 A DK518378 A DK 518378A DK 154484 B DK154484 B DK 154484B
- Authority
- DK
- Denmark
- Prior art keywords
- pipes
- extrusion
- helical
- procedure
- application
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- 239000010410 layer Substances 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 2
- 230000000750 progressive effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- 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
-
- 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
- B29C48/07—Flat, e.g. panels
-
- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/17—Articles comprising two or more components, e.g. co-extruded layers the components having different colours
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Closures For Containers (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Description
-1 --1 -
DK 154484BDK 154484B
Opfindelsen angår en fremgangsmåde til anbringelse af et beklædningslag på rør.The invention relates to a method for applying a coating layer to pipes.
laget er beregnet på beskyttelse af rør ved hjælp af en beskyttelsesbeklægning omfattende midler med skærmene, 5 kemisk, dielektrisk eller mekanisk virkning.the layer is intended for the protection of pipes by means of a protective covering comprising means with screens, chemical, dielectric or mechanical effect.
Ved kendte beskyttelseslag har man benyttet apparater og produkter, som fås ved hjælp af blandinger, som i de fleste tilfælde berøver midlerne en del af deres egenskaber. Mr man har benyttet polyethylen med lav, middel eller høj 10 vægtfylde, har det således været nødvendigt at foretage en beskyttelse mod den fremskyndede ældning, som skyldes lysets stråler, navnlig ultraviolet lys. Derfor har man blandet polyethylen med kønrøg, som fratager harpiksen en del af dens ønskværdige egenskaber, navnlig klæbeevne og mod-15 standsdygtighed,Known protective layers have used apparatus and products obtained by means of mixtures which in most cases rob the agents of some of their properties. Thus, having used low, medium or high density polyethylene, it has been necessary to provide protection against the accelerated aging caused by the rays of light, in particular ultraviolet light. Therefore, polyethylene has been blended with carbon black, which deprives the resin of some of its desirable properties, in particular adhesiveness and resistance,
Fremgangsmåden ifølge opfindelsen afhjælper disse ulemper og gør det muligt under bevarelse af overtræksmaterialet at bibeholde dettes klæbeegenskaber og i en eneste operation at sikre et beskyttende overtræk på et rør, der 20 har et yderligere behandlet eller ubehandlet lag.The method according to the invention eliminates these disadvantages and enables the coating material to retain its adhesive properties and in a single operation to provide a protective coating on a tube having a further treated or untreated layer.
Opfindelsen angår en fremgangsmåde til ekstrudering af materiale, som gør det muligt ud fra en eneste ekstrude-ringsdyse at benytte flere materialer med forskellig kvalitet og farve, uden at der sker nogen blanding af dem og 25 under bibeholdelse af materialernes egenskaber uafhængigt af hinanden.The invention relates to a method of extrusion of material which allows from a single extrusion die to use several materials of different quality and color without mixing them and maintaining the properties of the materials independently of one another.
I mange tekniske forbindelser, navnlig beklædning af nedgravede rør foretager man ifølge den kendte teknik en beklædning med forskellige materialelag, f.eks.: polyethy-30 len eller ethvert andet materiale med lav, middelstor eller høj vægtfylde til på hinanden følgende beklædninger til opnåelse af en passende tykkelse.In many technical compounds, in particular the coating of buried pipes, according to the prior art, a coating is made with various layers of material, for example: polyethylene or any other material of low, medium or high density for successive coatings to obtain a suitable thickness.
Disse beklædninger kan fasthæftes til rørene ved hjælp af et basislag, som kan være ekstruderet eller elek-35 trostatisk påført eller anbragt på enhver anden måde.These linings may be attached to the tubes by a base layer which may be extruded or electrostatically applied or affixed in any other manner.
Ved de benyttede materialer, især polyethylen, er det nødvendigt at beskytte materialet selv mod fremskyn-In the materials used, especially polyethylene, it is necessary to protect the material even from acceleration.
_2_ DK 154484B_2_ DK 154484B
det ældning på grund af navnlig ultraviolet lys.the aging due in particular to ultraviolet light.
Hidtil har man benyttet polyethylen tilsat kønrøg i varierende mængde. Tilsætningen af kønrøg berøver imidlertid polyethylenet en del af dets smidighed og den lethed, 5 hvormed det forbinder sig med andre lag ved varmepåvirk ning.So far, polyethylene added carbon black has been used in varying amounts. However, the addition of carbon black deprives the polyethylene part of its agility and the ease with which it joins other layers by heat effect.
Gennem den foreliggende opfindelse bliver det muligt at påføre rør en beklædning ved ekstrudering fra to eller flere ved siden af hinanden anbragte dyser af materialer 10 ud fra granulater af forskellig karakter, som derpå passerer en eneste dyse til dannelse af et bånd med ensartet tykkelse og med parallelle længdeorienterede sektorer, anbragt ved siden af hinanden og bestående af forskellige stoffer, som tjener til beklædningen.Through the present invention, it is possible to apply tubing to a coating by extrusion from two or more adjacent nozzles of materials 10 from different granules which then pass a single nozzle to form a strip of uniform thickness and with parallel longitudinally oriented sectors, arranged side by side and made up of various fabrics serving to the garment.
15 Ved denne operation foretages der samtidig en skrue- linieformet forløbende pårulning på røret, som udføres på den måde, at et indre lag af samme karakter i en eller flere tykkelser anbringes på røret tillige med et ydre lag af en derfra forskellig karakter. Man undgår således blandin-20 gen af endnu halvflydende produkter, og man muliggør en udvælgelse af lagene.In this operation, at the same time, a helical rolling roll is made on the tube, which is carried out in such a way that an inner layer of the same character is applied to the tube in one or more thicknesses, together with an outer layer of a different character therefrom. Thus, the mixing of still semi-liquid products is avoided and a selection of the layers is possible.
Opfindelsen skal' forklares nærmere i forbindelse med tegningen, hvor fig. 1 viser et ekstruderingsapparat, som omfatter 2 25 dyser, som fører til en enkelt dyse, hvorved der fås et fler lagsbånd, og fig. 2 det resultat, som fås ved skruelinieformet pårulning.The invention will be explained in more detail in connection with the drawing, in which fig. 1 shows an extrusion apparatus comprising 25 nozzles leading to a single nozzle, thereby providing a plurality of layers of tape, and FIG. 2 is the result obtained by helical rolling.
På tegningen udpresser ekstruderingsapparaterne 1 og 1' 30 materiale til en ledning 2, som derpå leder til en enkelt ledning, som fører til dysen eller ekstruderingshovedet 3, som danner det sammensatte bånd, som omfatter materialerne 5 og 6, som hæfter til hinanden ved 7.In the drawing, the extrusion apparatus 1 and 1 '30 extrude material into a conduit 2 which then leads to a single conduit leading to the nozzle or extrusion head 3 forming the composite band comprising the materials 5 and 6 which adhere to each other at 7 .
Der er således to parallelle bånd, som passerer en 35 eneste dyse. Som følge af anbringelsen side om side undgår man enhver blanding af de endnu halvflydende eller pasta-agtige produkter. Pårulningen sker på et rør 11, som bevæger sig i en ensartet rotations- og translationsbevægelse. De ved siden af hinanden anbragte og sammensvejsede bånd føres på 40 skrå eller i skruelinieform under en vis vinkel. Der fåsThus, there are two parallel bands passing through a single nozzle. Due to the side-by-side arrangement, any mixture of the still semi-liquid or paste-like products is avoided. The rolling roll occurs on a tube 11 which moves in a uniform rotational and translational motion. The adjacent and welded strips are guided at 40 angles or in helical form at a certain angle. There are available
_3_ DK 154484 B_3_ DK 154484 B
da en pårulning med overlejring og med den ønskede tykkelse.then a roll with overlay and with the desired thickness.
Pårulni.ngen er skruelinieformet, hvilket vil sige, at den sker under en vis vinkel. Der er således en ganske svag sideforskydning, som tillader overlejringen af lagene med 5 forskellig karakter. Man undgår således ulemperne ved på hinanden følgende overlejringer, medens det bliver muligt i en eneste pårulning at udvælge de parallelle lag i lodret retning.The frame is helical, which means that it occurs at a certain angle. Thus there is a rather weak lateral displacement which allows the overlay of the layers of 5 different character. Thus, the disadvantages of successive overlays are avoided, while it is possible in a single roll to select the parallel layers in the vertical direction.
Det er således kombinationen af de to foranstaltninger 10 bestående i ved siden af hinanden anbragte ekstruderings-apparater og skruelinieformet pårulning, som karakteriserer opfindelsen.Thus, it is the combination of the two measures 10 consisting of adjacent extrusion devices and helical rollers that characterize the invention.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7736199 | 1977-11-22 | ||
| FR7736199A FR2409145A1 (en) | 1977-11-22 | 1977-11-22 | PROCESS AND DEVICE FOR MAKING A COMPLEX PROTECTIVE COATING |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK518378A DK518378A (en) | 1979-05-23 |
| DK154484B true DK154484B (en) | 1988-11-21 |
| DK154484C DK154484C (en) | 1989-04-17 |
Family
ID=9198323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK518378A DK154484C (en) | 1977-11-22 | 1978-11-21 | PROCEDURE FOR APPLICATION OF CLOTHING COATS ON PIPES |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0002167B1 (en) |
| JP (1) | JPS5480364A (en) |
| CA (1) | CA1120678A (en) |
| DE (1) | DE2860788D1 (en) |
| DK (1) | DK154484C (en) |
| ES (1) | ES475278A1 (en) |
| FR (1) | FR2409145A1 (en) |
| IE (1) | IE47672B1 (en) |
| IT (1) | IT1104496B (en) |
| NO (1) | NO783825L (en) |
| YU (1) | YU258978A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1140219B (en) * | 1981-10-13 | 1986-09-24 | Fae Full Anticorrosion Eng | WHITE OR OTHER LIGHT COLOR OR METALLIC PROTECTIVE COATING, TO IMPROVE COMPLETION OF THERMOPLASTIC ANTI-CORROSION COATINGS EXTRUDED DIRECTLY ON THE EXTERNAL SURFACE OF THE CYLINDRICAL TUBES AND BODIES |
| US4657499A (en) * | 1985-05-30 | 1987-04-14 | Shell Oil Company | Screw extruder apparatus adapted for mixing additive fluids |
| US6702195B2 (en) * | 2002-07-15 | 2004-03-09 | Xerox Corporation | Multi-layer slot coating die with selective ultrasonic assist |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR566870A (en) * | 1922-05-31 | 1924-02-22 | Improvements to presses and machines for upsetting rubber and similar materials | |
| FR1469667A (en) * | 1966-02-08 | 1967-02-17 | Dow Chemical Co | Composite article based on thermoplastic materials and method and apparatus for obtaining it |
| US3333050A (en) * | 1965-11-26 | 1967-07-25 | Union Carbide Corp | Alkali metal electrical conductors with reactive polymer insulation |
| FR1495368A (en) * | 1966-09-30 | 1967-09-15 | Crown Zellerbach Corp | Multi-layer thermoplastic films |
| FR2152137A5 (en) * | 1971-09-06 | 1973-04-20 | Sumitomo Metal Ind |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1090162A (en) * | 1952-10-08 | 1955-03-28 | Lavorazione Mat Plastiche Sas | Process for coating objects with superimposed layers of coating and apparatus for carrying out this process |
-
1977
- 1977-11-22 FR FR7736199A patent/FR2409145A1/en active Granted
-
1978
- 1978-10-19 EP EP78430017A patent/EP0002167B1/en not_active Expired
- 1978-10-19 DE DE7878430017T patent/DE2860788D1/en not_active Expired
- 1978-10-30 CA CA000314875A patent/CA1120678A/en not_active Expired
- 1978-11-07 YU YU02589/78A patent/YU258978A/en unknown
- 1978-11-14 NO NO783825A patent/NO783825L/en unknown
- 1978-11-14 IT IT12865/78A patent/IT1104496B/en active
- 1978-11-21 IE IE2291/78A patent/IE47672B1/en unknown
- 1978-11-21 DK DK518378A patent/DK154484C/en active
- 1978-11-21 JP JP14291678A patent/JPS5480364A/en active Pending
- 1978-11-21 ES ES475278A patent/ES475278A1/en not_active Expired
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR566870A (en) * | 1922-05-31 | 1924-02-22 | Improvements to presses and machines for upsetting rubber and similar materials | |
| US3333050A (en) * | 1965-11-26 | 1967-07-25 | Union Carbide Corp | Alkali metal electrical conductors with reactive polymer insulation |
| FR1469667A (en) * | 1966-02-08 | 1967-02-17 | Dow Chemical Co | Composite article based on thermoplastic materials and method and apparatus for obtaining it |
| FR1495368A (en) * | 1966-09-30 | 1967-09-15 | Crown Zellerbach Corp | Multi-layer thermoplastic films |
| FR2152137A5 (en) * | 1971-09-06 | 1973-04-20 | Sumitomo Metal Ind |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2409145A1 (en) | 1979-06-15 |
| IE782291L (en) | 1979-05-22 |
| ES475278A1 (en) | 1980-02-01 |
| IT7812865A0 (en) | 1978-11-14 |
| EP0002167B1 (en) | 1981-06-17 |
| IE47672B1 (en) | 1984-05-16 |
| CA1120678A (en) | 1982-03-30 |
| NO783825L (en) | 1979-05-23 |
| EP0002167A1 (en) | 1979-05-30 |
| JPS5480364A (en) | 1979-06-27 |
| DE2860788D1 (en) | 1981-09-24 |
| DK154484C (en) | 1989-04-17 |
| DK518378A (en) | 1979-05-23 |
| YU258978A (en) | 1983-01-21 |
| IT1104496B (en) | 1985-10-21 |
| FR2409145B1 (en) | 1980-08-22 |
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