DE937254C - Foam in the form of tapes, profile cores or the like, in particular for insulating electrical lines - Google Patents

Foam in the form of tapes, profile cores or the like, in particular for insulating electrical lines

Info

Publication number
DE937254C
DE937254C DES24679A DES0024679A DE937254C DE 937254 C DE937254 C DE 937254C DE S24679 A DES24679 A DE S24679A DE S0024679 A DES0024679 A DE S0024679A DE 937254 C DE937254 C DE 937254C
Authority
DE
Germany
Prior art keywords
foam
tapes
electrical lines
profile cores
cores
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.)
Expired
Application number
DES24679A
Other languages
German (de)
Inventor
Albrecht Dipl-Ing Boehse
Paul Thomas
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.)
Siemens AG
Original Assignee
Siemens AG
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
Application filed by Siemens AG filed Critical Siemens AG
Priority to DES24679A priority Critical patent/DE937254C/en
Application granted granted Critical
Publication of DE937254C publication Critical patent/DE937254C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/006—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting blocs of plastic material
    • 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
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insulated Conductors (AREA)

Description

Schaumstoff in Form von Bändern, Profilkernen od. dgl., insbesondere zur Isolierung elektrischer Leitungen Die bisher bekannten Schaumstoffe liegen meist in schon verschäumten Platten oder Blöcken vor, aus denen Bänder oder Profilkerne geschnitten werden.Foam in the form of tapes, profile cores or the like, in particular for insulation of electrical lines The foams known up to now are mostly lying in already foamed sheets or blocks, from which strips or profile cores get cut.

Bei der NTerarbelitung dieses Schaumistoffes ergeben sich infolge der geringen Dehnung und Festigkeit wesentliche Schwierigkeiten. Bei scharfen Biegungen bricht der Schaumstoff auf und das Band reißt an dieser Stelle.With the NTerarbelitung this foam result as a result the low elongation and strength significant difficulties. With sharp bends the foam breaks open and the tape tears at this point.

Gemäß der Erfindung sollen diese Nachteile dadurch vermieden werden, daß der Schaumstoff an der Oberfläche einer Schicht aus gerecktem Schaumstoff versehen ist. Diese Schicht an der Oberfläche des Schaumstoffeis kann beispielsweise beim Schneiden des Schaumstoffes erzeugt werden. Um dies zu erreichen, wird der Schaumstoff, der in Form von Platten oder Blöcken vorliegt und aus dem die Bänder gesch,nitten werden, gegen das mit hoher Geschwindigkeit vorbeilaufende Messer gedrückt. Durch die hierbei bewirkte Reibung entsteht Wärme, welche die Oberfläche des Schaumstoffes erweicht, wobei durch die Bewegung des Messers die Oberfläche des Schaumstoffes gereckt wird. Die hierbei entstehende Schicht ermöglicht eine scharfe Biegebeanspruchung und gibt dem Schaumstoff bei seiner Weiterverarbeitung eine große Festigkeit. According to the invention, these disadvantages are to be avoided by that the foam is provided on the surface of a layer of expanded foam is. This layer on the surface of the foam can, for example, when Cutting the foam can be generated. To achieve this, the foam, which is in the form of plates or blocks and from which the ribbons are cut are pressed against the knife moving at high speed. By the friction caused in this way creates heat, which the surface of the foam softens, with the movement of the knife the surface of the foam is stretched. The resulting layer enables a sharp bending stress and gives the foam great strength during its further processing.

Die geschnittenen Schaumstoffbänder bzw. The cut foam strips or

Profilkerne können auch durch ein vorzugsweise geheiztes Rollenwerkzeug gezogen werden. Zweckmäßig werden hierbei die Rollen entgegengesetzt zur Durchzugsrichtung des Schhaumstoffbandes angetrieben. Das Rollenwerkzeug kann sich in einem geheizten Behälter befinden oder es können auch geheizte Rollen benutzt werden. Soll nur die eine Seite des Schaumstoffbandes mit einer Schicht aus gerecktem Schaumstoff versehen werden, so läßt man nur eine Rolle entgegengesetzt zum Banddurchzug laufen, während die zweite in Richtung des Banddurchzuges läuft. Für Schaumstoffkerne mit rechteckigem oder quadraüschem Querschnitt verwendet man zweckmäßig ein Werkzeug mit vier Rollen, so daß auf allen Seiten eine Schicht aus gerecktem Material vorhanden ist.Profile cores can also be produced using a preferably heated roller tool to be pulled. In this case, the roles are expediently opposite to the pulling direction driven by the foam belt. The roller tool can be in a heated Containers are located or heated rollers can also be used. Should only that one side of the foam tape is provided with a layer of expanded foam are only allowed to run a roller opposite to the tape passage while the second runs in the direction of the belt passage. For foam cores with rectangular or square cross-section, it is advisable to use a tool with four rollers, so that there is a layer of stretched material on all sides.

Werden die Schaumstoffbänder bzw. -kerne zur Isolierung elektrischer Leiter verwandt, ist es zweckmäßig, die dem Leiter zugekehrte Fläche nicht mit einer Schicht aus gerecktem Material zu versehen. If the foam strips or cores are used for electrical insulation Head related, it is useful that the surface facing the head not with a To provide a layer of stretched material.

Claims (4)

PATENTANSPRÜCHE: I. Schaumstoff in Form von Bändern, Profilkernen od. dgl., insbesondere zur Isolierung elektrischer Leitungen und Kabel, dadurch gekennzeichnet, daß der Schaumstoff nur an der Oberfläche eine gereckte Schicht aufweist. PATENT CLAIMS: I. Foam in the form of tapes, profile cores Od. Like., In particular for the insulation of electrical lines and cables, thereby characterized in that the foam has a stretched layer only on the surface having. 2. Verfahren zur Herstellung von Schaumstoff nach Anspruch I, dadurch gekennzeichnet, daß die Schicht aus gerecktem Schaumstoff beim Schneiden des Schaumstoffes erzeugt wird, z. B. durch Andrücken des Schaumstoffes an das Schneidwerkzeug. 2. Process for the production of foam according to claim I, characterized in that characterized in that the layer of expanded foam when cutting the foam is generated, e.g. B. by pressing the foam against the cutting tool. 3. Verfahren nach Anspruch I, dadurch gekennzeichnet, daß die geschnitterien Schaumstoffbänder bzw. -Profilkerne durch ein vorzugsweise beheiztes Rollenwerkzeug gezogen werden. 3. The method according to claim I, characterized in that the cut Foam strips or profile cores through a preferably heated roller tool to be pulled. 4. Verfahren nach Anspruch 3, dadurch ge kennzeSchnet, daß alle oder ein Teil der Rollen des Werkzeuges entgegengesetzt zur Durchzugsrichtung des Schaumstoffbandes angetrieben werden. 4. The method according to claim 3, characterized in that all or part of the rollers of the tool opposite to the direction in which the foam tape is pulled through are driven. Angezogene Druckschriften: Deutsche Patentschriften Nr. 6sI 385, 917 930. Attached publications: German patent specifications No. 6sI 385, 917 930.
DES24679A 1951-09-04 1951-09-04 Foam in the form of tapes, profile cores or the like, in particular for insulating electrical lines Expired DE937254C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES24679A DE937254C (en) 1951-09-04 1951-09-04 Foam in the form of tapes, profile cores or the like, in particular for insulating electrical lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES24679A DE937254C (en) 1951-09-04 1951-09-04 Foam in the form of tapes, profile cores or the like, in particular for insulating electrical lines

Publications (1)

Publication Number Publication Date
DE937254C true DE937254C (en) 1955-12-29

Family

ID=7477983

Family Applications (1)

Application Number Title Priority Date Filing Date
DES24679A Expired DE937254C (en) 1951-09-04 1951-09-04 Foam in the form of tapes, profile cores or the like, in particular for insulating electrical lines

Country Status (1)

Country Link
DE (1) DE937254C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141439B (en) * 1955-02-24 1962-12-20 Jungfer Akkumulatoren Process for the production of porous, corrugated or grained plastic sheets or plastic films
DE1284622B (en) * 1962-02-26 1968-12-05 Agricola Reg Trust Handelsgese Process for coating foam sheets with sheets made of other materials

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE681385C (en) * 1936-03-10 1939-09-21 Siemens & Halske Akt Ges Process for the production of flexible electrical insulating bodies from polyvinyl compounds
DE917930C (en) * 1950-09-14 1954-09-16 Sueddeutsche Kabelwerke Zweign Process for the production of tapes or foils from porous thermoplastics

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE681385C (en) * 1936-03-10 1939-09-21 Siemens & Halske Akt Ges Process for the production of flexible electrical insulating bodies from polyvinyl compounds
DE917930C (en) * 1950-09-14 1954-09-16 Sueddeutsche Kabelwerke Zweign Process for the production of tapes or foils from porous thermoplastics

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141439B (en) * 1955-02-24 1962-12-20 Jungfer Akkumulatoren Process for the production of porous, corrugated or grained plastic sheets or plastic films
DE1284622B (en) * 1962-02-26 1968-12-05 Agricola Reg Trust Handelsgese Process for coating foam sheets with sheets made of other materials

Similar Documents

Publication Publication Date Title
DE654299C (en) Production of flexible strips or foils made of polystyrene o.
DE1479677C3 (en) Process for producing an open network in plastic films
DE715733C (en) Process for the production of foils and tapes from organic thermoplastic masses
DE1504890A1 (en) Process for the production of abrasion-resistant items from polypropylene
DE937254C (en) Foam in the form of tapes, profile cores or the like, in particular for insulating electrical lines
DE2251985A1 (en) Hard or soft foamed block cutter - using heat generated by friction of eg nylon threads
DE2408319C3 (en) Cutting device for chipless cutting of rigid foam bodies
DE628969C (en) Machine for the production of panels of any cross-section from synthetic resin and synthetic resin-like compounds
DE955330C (en) Stripping pliers
DE561506C (en) Device for cutting threads from metal webs
DE1268817B (en) Method and device for embedding wires or the like between thermoplastic layers
DE911079C (en) Drive belts, ropes, transport belts, etc. like
DE2651127A1 (en) PROCESS FOR REFORMING SPLIT WIRE
DE508936C (en) Method and device for the manufacture of products similar to corrugated board
DE930682C (en) Device for rolling up and unrolling a metal strip
DE69003242T2 (en) METHOD FOR STRAIGHTING TAPES BY STRETCHING AND BENDING.
DE954530C (en) Process for the production of the insulation of a high voltage electrical cable
DE1174493B (en) Device for manufacturing belts for pneumatic motor vehicle tires
DE952945C (en) Process for the series production of mechanically scannable sound bands and equipment for practicing this process
DE1288548B (en) Process for the production of metallic hollow bodies with multilayer walls and device for carrying out this process
DE8113C (en) Method for representing wire
DE536138C (en) Method of creasing thick cardboard
DE2410578A1 (en) METHOD OF MANUFACTURING TIN PANELS FROM METAL STRIP
DE397180C (en) Manufacture of steel belts for solid rubber tires
AT94381B (en) Tape cutting machine for cutting wide webs into a plurality of tapes at the same time.