DE1234286B - Foam tape for insulation purposes in electrical engineering, especially for cables, or in refrigeration engineering - Google Patents

Foam tape for insulation purposes in electrical engineering, especially for cables, or in refrigeration engineering

Info

Publication number
DE1234286B
DE1234286B DES79982A DES0079982A DE1234286B DE 1234286 B DE1234286 B DE 1234286B DE S79982 A DES79982 A DE S79982A DE S0079982 A DES0079982 A DE S0079982A DE 1234286 B DE1234286 B DE 1234286B
Authority
DE
Germany
Prior art keywords
foam tape
foam
folded
engineering
cables
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DES79982A
Other languages
German (de)
Inventor
Dr Otto Cords
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUEDDEUTSCHE KABELWERKE
ZWEIGNIEDERLASSUNG DER VEREINI
Original Assignee
SUEDDEUTSCHE KABELWERKE
ZWEIGNIEDERLASSUNG DER VEREINI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL280788D priority Critical patent/NL280788A/xx
Application filed by SUEDDEUTSCHE KABELWERKE, ZWEIGNIEDERLASSUNG DER VEREINI filed Critical SUEDDEUTSCHE KABELWERKE
Priority to DES79982A priority patent/DE1234286B/en
Priority to FR903136A priority patent/FR1335135A/en
Publication of DE1234286B publication Critical patent/DE1234286B/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • 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
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/04—Bending or folding of plates or sheets
    • B29C53/06—Forming folding lines by pressing or scoring
    • B29C53/063—Forming folding lines by pressing or scoring combined with folding
    • 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • 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
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/027—Bands, cords, strips or the like for helically winding around a cylindrical object
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/001—Thermal insulation specially adapted for cryogenic vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0063—Cutting longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0053—Moulding articles characterised by the shape of the surface, e.g. ribs, high polish
    • B29C37/0057—Moulding single grooves or ribs, e.g. tear lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0329—Foam

Description

Aus Schaumstoff bestehendes Band für Isolierzwecke in der Elektrotechnik, insbesondere für Kabel, oder in der Käitetechnik Zusatz zum Patent: 1142395 Die Erfindung betrifft ein aus Schaumstoff bestehendes Band für Isolierzwecke in der Elektrotechnik, insbesondere für Kabel, oder in der Kältetechnik und bezweckt eine weitere Ausbildung des Erfindungsgegenstandes nach dem Hauptpatent 1 142395 und/oder nach dem Zusatzpatent 1 186921 und/oder nach dem Zusatzpatent 1 213 019.Foam tape for insulating purposes in electrical engineering, in particular for cables, or in the field of technology, addition to the patent: 1142395 Die The invention relates to a foam tape for insulating purposes in the Electrical engineering, in particular for cables, or in refrigeration technology, and aims at a further development of the subject matter of the invention according to the main patent 1 142395 and / or according to the additional patent 1 186921 and / or according to the additional patent 1 213 019.

Die in den letzteren angegebene Schaumstoffisolierung wird von einem Schaumstoffband gebildet, das einfach oder mehrfach aus einer Schaumstoffolie in Längsrichtung gefaltet und an der offenen Längskante durch Verschweißen verschlossen ist. Außerdem können nach dem Zusatzpatent 1 186921 in das Schaumstoffband nach dem Hauptpatent 1142395 ein oder mehrere Verstärkungsfäden, vorzugsweise Glasseidefäden, eingelegt sein, um einmal die Zugfestigkeit in Längsrichtung der Schaumstoffisolierung zu erhöhen, zum andern das Einreißen der Kante des Schaumstoffbandes zu verhindern. Da der Schweißvorgang beim Verschließen der offenen Längskante der Schaumstoffisolierung das Schaumstoffband unmittelbar in der Schweißnaht versprödet, wird nach dem Zusatzpatent 1 213 019 vorgeschlagen, das Schaumstoffband nach dem Verschweißen seiner offenen Längskante einem Walzvorgang zu beiden Seiten der Schweißnaht zu unterziehen. The foam insulation specified in the latter is made by a Foam tape formed, which is single or multiple from a foam sheet in Folded lengthways and sealed at the open lengthwise edge by welding is. In addition, according to the additional patent 1 186921 in the foam tape after the main patent 1142395 one or more reinforcing threads, preferably fiberglass threads, Be inserted to once the tensile strength in the longitudinal direction of the foam insulation on the other hand, to prevent the edge of the foam tape from tearing. Because the welding process occurs when the open longitudinal edge of the foam insulation is closed the foam tape becomes brittle directly in the weld seam, according to the additional patent 1 213 019 proposed that the foam tape after welding its open To subject the longitudinal edge to a rolling process on both sides of the weld seam.

Es hat sich nun gezeigt, daß die Faltung der Schaumstoffbänder insbesondere dann, wenn diese aus dickem Folienmaterial bestehen, dadurch Schwierigkeiten bereitet, daß bei dem Faltvorgang die Folie nicht in den gewünschten, der Seitenkante parallelen Linien faltbar ist. Die Kanten der gefalteten Folie haben vielmehr ungleichen Abstand von der Faltlinie. Dadurch wird das Verschweißen der Kanten zum Verschließen des Schaumstoffbandes erschwert oder unmöglich gemacht. Das Verlaufen der Kanten des Schaumstoffbandes kann eintreten, weil diese nach Austritt aus dem Faltgerät beim Verschweißen nicht mehr durch an diesem vorgesehene Kantenführungen gehalten werden. Das Verlaufen ist insbesondere dann zu befürchten, wenn die Schaumstofffolien eine Dicke von 0,5 mm oder mehr aufweisen. It has now been shown that the folding of the foam strips in particular when these are made of thick film material, causing difficulties that during the folding process, the film does not parallel the side edge in the desired direction Lines is foldable. Rather, the edges of the folded film are unevenly spaced from the fold line. This causes the welding of the edges to close the Foam tape made difficult or impossible. The running of the edges of the Foam tape can occur because it is after exiting the folder Welding can no longer be held by edge guides provided on this. The running is particularly to be feared if the foam sheets have a Have a thickness of 0.5 mm or more.

Bei solchen Schaumstoffolien ist es schwierig, die Faltung an den gewünschten Faltlinien zu erhalten.In the case of such foam sheets, it is difficult to maintain the fold at the desired fold lines.

Dies gilt sowohl für einfache als auch für mehrfach gefaltete Schaumstoffbänder. Außerdem ist auch bei den stärkeren Folien zu befürchten, daß diese bei der Faltung um 3600 in den Außenschichten einreißen und dann in der Faltlinie brechen.This applies to both single and multiple folded foam tapes. In addition, it is to be feared that the thicker foils will fold Tear around 3600 in the outer layers and then break in the fold line.

Es wurde nun gefunden, daß die genannten Schwierigkeiten mit Sicherheit gemäß der Erfindung dadurch vermieden werden, wenn das zu faltende Band vor dem Einlaufen in das Faltgerät entlang der zu faltenden Längslinien eingekerbt wird, was beispielsweise durch am Faltgerät angebrachte Druckbolzen erreicht werden kann. Durch die Längskerben, deren Tiefe auf einen passenden Teil der Dicke der Schaumstoffolie eingestellt wird, und die überall dort parallel zur Längskante eingedrückt werden, wo die Schaumstoffolie gefaltet werden soll, wird erreicht, daß die Kanten derselben nach dem Austritt aus dem Faltgerät nicht voneinander abweichen, sondern ihre Lage zueinander beibehalten, so daß sie miteinander verschweißt werden können. It has now been found that the aforementioned difficulties are certain be avoided according to the invention when the to be folded Tape before running in is notched in the folding device along the longitudinal lines to be folded, which for example can be reached by pressure bolts attached to the folding device. Through the longitudinal notches, the depth of which is set to a suitable part of the thickness of the foam sheet, and which are pressed in parallel to the long edge wherever the foam sheet is to be folded, it is achieved that the edges of the same after the exit from the folding device do not deviate from each other, but maintain their position to each other, so that they can be welded together.

Die Abbildungen veranschaulichen den Erfindungsgedanken. The figures illustrate the idea of the invention.

In A b b. 1 ist schematisch dargestellt, wie das Schaumstoffband 1 mittels Druckbolzen 2 eingekerbt wird. Die Druckbolzen 2 sind zu diesem Zweck bei 3 entsprechend der gewünschten Kerbform ausgebildet. In A b b. 1 is shown schematically how the foam tape 1 is notched by means of pressure pin 2. The pressure pins 2 are for this purpose formed at 3 according to the desired notch shape.

Die Kerben 4, 5 und 6 verlaufen parallel zu den Längskanten des Schaumstoffbandes 1.The notches 4, 5 and 6 run parallel to the longitudinal edges of the foam tape 1.

Abt. 2 zeigt in den Darstellungena und b, wie das Schaumstoffband 1 längs der Kerben 4 und 5 gefaltet wird, während nach c noch die letzte Faltung um die Kerbe 6 erfolgt. Den Abschlußvorgang veranschaulicht die Darstellung d, wonach die zunächst noch offene Kante des gefalteten Schaumstoffbandes 1 bei 7 verschweißt ist. Section 2 shows in the representations a and b how the foam tape 1 is folded along the notches 4 and 5, while the last fold is still after c around the notch 6 takes place. The final process is illustrated by representation d, after which the edge of the folded foam strip 1, which is initially still open, is welded at 7 is.

Claims (1)

Patentanspruch: Aus Schaumstoff bestehendes Band für Isolierzwecke in der Elektrotechnik, insbesondere für Kabel, oder in der Kältetechnik nach dem Hauptpatent 1142395, gemäß dem das Schaumstoffband einfach oder mehrfach aus einer Schaumstoffolie, die in ihrer Längsrichtung gefaltet ist, besteht und an der offenen Längskante durch Verschweißen geschlossen ist, und/oder nach dem Zusatzpatent 1 921, nach dem vor dem Ver- schweißen des Schaumstoffbandes in dieses ein oder mehrere Verstärkungsfäden, beispielsweise Glasseidefäden, eingelegt sind, und/oder nach dem Zusatzpatent 1213 019, nach dem das Schaumstoffband nach dem Verschweißen seiner offenen Längskante zu beiden Seiten der Schweißnaht gewalzt worden ist, dadurch gekennzeichnet, daß die einfach oder mehrfach zu faltende Schaumstoffolie (1) vor Eintritt in das Faltgerät entlang der zu faltenden Linien (4, 5, 6) eingekerbt ist. Claim: Foam tape for insulating purposes in electrical engineering, especially for cables, or in refrigeration according to the Main patent 1142395, according to which the foam tape single or multiple from one Foam sheet, which is folded in its longitudinal direction, is made and attached to the open Long edge is closed by welding, and / or according to the additional patent 1 921, after the weld the foam tape into this one or more Reinforcing threads, for example glass fiber threads, are inserted, and / or after the additional patent 1213 019, according to which the foam tape after welding his open longitudinal edge has been rolled on both sides of the weld seam, thereby characterized in that the single or multiple fold to be folded foam sheet (1) before Entry into the folding device is notched along the lines to be folded (4, 5, 6).
DES79982A 1961-07-13 1962-06-19 Foam tape for insulation purposes in electrical engineering, especially for cables, or in refrigeration engineering Pending DE1234286B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL280788D NL280788A (en) 1962-06-19
DES79982A DE1234286B (en) 1962-06-19 1962-06-19 Foam tape for insulation purposes in electrical engineering, especially for cables, or in refrigeration engineering
FR903136A FR1335135A (en) 1961-07-13 1962-07-06 Foam tape for insulation in electrical engineering, particularly for cables, or in refrigeration technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES79982A DE1234286B (en) 1962-06-19 1962-06-19 Foam tape for insulation purposes in electrical engineering, especially for cables, or in refrigeration engineering

Publications (1)

Publication Number Publication Date
DE1234286B true DE1234286B (en) 1967-02-16

Family

ID=7508584

Family Applications (1)

Application Number Title Priority Date Filing Date
DES79982A Pending DE1234286B (en) 1961-07-13 1962-06-19 Foam tape for insulation purposes in electrical engineering, especially for cables, or in refrigeration engineering

Country Status (2)

Country Link
DE (1) DE1234286B (en)
NL (1) NL280788A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997034556A2 (en) * 1996-03-22 1997-09-25 The Procter & Gamble Company Method of folding and using static charge to align and retain folded material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997034556A2 (en) * 1996-03-22 1997-09-25 The Procter & Gamble Company Method of folding and using static charge to align and retain folded material
WO1997034556A3 (en) * 1996-03-22 1997-10-23 Method of folding and using static charge to align and retain folded material

Also Published As

Publication number Publication date
NL280788A (en) 1900-01-01

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