DE1297232B - Process for improving the adhesive strength of thin insulating foils that are painted or laminated onto a carrier foil that is previously impregnated - Google Patents

Process for improving the adhesive strength of thin insulating foils that are painted or laminated onto a carrier foil that is previously impregnated

Info

Publication number
DE1297232B
DE1297232B DES68596A DES0068596A DE1297232B DE 1297232 B DE1297232 B DE 1297232B DE S68596 A DES68596 A DE S68596A DE S0068596 A DES0068596 A DE S0068596A DE 1297232 B DE1297232 B DE 1297232B
Authority
DE
Germany
Prior art keywords
molecular weight
polybutylene
thin insulating
painted
adhesive strength
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
DES68596A
Other languages
German (de)
Inventor
Dipl-Phys Friedrich
Gaenge
Dr Rer Nat Hermann
Schill
Voelkl
Dr Rer Nat Walter
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
Priority to NL265007D priority Critical patent/NL265007A/xx
Priority to NL131131D priority patent/NL131131C/xx
Application filed by Siemens AG filed Critical Siemens AG
Priority to DES68596A priority patent/DE1297232B/en
Priority to FR861124A priority patent/FR1288661A/en
Priority to GB18372/61A priority patent/GB910370A/en
Publication of DE1297232B publication Critical patent/DE1297232B/en
Pending legal-status Critical Current

Links

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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • B05D7/26—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials synthetic lacquers or varnishes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/35—Polyalkenes, e.g. polystyrene
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/36—Polyalkenyalcohols; Polyalkenylethers; Polyalkenylesters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/60—Waxes
    • 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
    • H01B3/185—Substances or derivates of cellulose
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/32—Wound capacitors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
    • C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Insulating Materials (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Insulating Bodies (AREA)
  • Laminated Bodies (AREA)

Description

Die Erfindung bezieht sich auf ein Verfahren zur HerstellungvonelektrischenDünnfolienkondensatoren, wobei dünne Isolierstoffolien auf mit hochschmelzenden Kohlenwasserstoffen, denen klebende Eigenschaften aufweisende Zusätze auf der Basis von polymerisierten Kohlenwasserstoffen wie niedermolekulares Polyisobutylen oder Polybutylen, oder von polymerisierten Vinyläthern wie Polyvinylisobutyläther zugefügt wurden, imprägnierte Trägerfolien durch Auflackieren oder Aufkaschieren aufgebracht werden und den zur Herstellung elektrischer Kondensatoren erforderlichen Arbeitsgängen unterworfen werden, nach Patent 1250 001.The invention relates to a method for the production of electrical thin film capacitors, being thin insulating foils on with high-melting hydrocarbons, which Additives with adhesive properties based on polymerized hydrocarbons such as low molecular weight polyisobutylene or polybutylene, or of polymerized Vinyl ethers such as polyvinyl isobutyl ether were added, impregnated carrier films be applied by lacquering or laminating and the production electrical capacitors are subjected to necessary operations, according to Patent 1250 001.

Bei der Herstellung von Dünnfolien mit einer Dicke unter 6 #t wird auf eine Trägerfolie aus einer Lacklösung ein Film gegebenenfalls in mehreren Schritten auflackiert. Die Trägerfolie darf dabei von dem Lösungsmittel nicht angegriffen werden. Die auflackierte dünne Folie muß ferner auf der Trägerfolie so stark haften, daß sie sich während der folgenden Verarbeitungsschritte nicht abhebt und sich dennoch anschließend beim Wickeln ohne mechanische Beschädigung ablösen läßt.When producing thin films with a thickness below 6 #t a film on a carrier film from a lacquer solution, optionally in several steps painted on. The carrier film must not be attacked by the solvent will. The coated thin film must also adhere so strongly to the carrier film that that it does not stand out during the following processing steps and still does can then be removed during winding without mechanical damage.

Um den Ablösevorgang der dünnen Folien von den Trägerfolien zu erleichtern, ist es aus der französischen Patentschrift 1159 811 bekannt, die Oberfläche der Trägerfolien, z. B. aus Papier, mit Kohlenwasserstoffen zu überziehen.In order to facilitate the process of removing the thin foils from the carrier foils, it is known from French patent specification 1159 811, the surface of the Carrier foils, e.g. B. made of paper, to be coated with hydrocarbons.

Als besonders geeignet hat sich als Trägerfolie eine Papierfolie erwiesen, die mit einem Gemisch aus hochschmelzenden Kohlenwasserstoffen überzogen ist. Da jedoch die dadurch erreichte Haftfestigkeit zwischen den dünnen Folien und der Überzugsschicht nicht völlig ausreichte, wurde im Hauptpatent 1250 001 vorgeschlagen, daß den hochschmelzenden Kohlenwasserstoffen klebende Eigenschaften aufweisende Zusätze auf der Basis von polymerisierten Kohlenwasserstoffen oder polymerisierten Vinyläthern mit guten dielektrischen Eigenschaften und mit derart niedrigem Dampfdruck, daß die Metallbedampfung im Vakuum nicht störend beeinflußt wird, in solcher Konzentration zugefügt `werden, daß einerseits kein selbständiges Ablösen der Dünnfolien von den Trägerfolien während der Verarbeitung eintritt und andererseits die Dünnfolien, ohne zu zerreißen, von den Trägerfolien abgelöst werden können.A paper film has proven to be particularly suitable as the carrier film, which is coated with a mixture of high-melting hydrocarbons. There however, the adhesive strength achieved thereby between the thin films and the coating layer was not completely sufficient, it was suggested in the main patent 1250 001 that the high-melting point Additives based on hydrocarbons having adhesive properties polymerized hydrocarbons or polymerized vinyl ethers with good dielectric properties Properties and with such a low vapor pressure that the metal vapor deposition in a vacuum is not adversely affected, are added in such a concentration that on the one hand no independent detachment of the thin films from the carrier films during processing occurs and on the other hand the thin films, without tearing, from the carrier films can be replaced.

Die weiteren Untersuchungen haben gezeigt, daß die Haftfestigkeit stark von der Zusammensetzung des Imprägniermittels beeinflußt wird. Um zu optimalen Bedingungen zu gelangen, wird vorgeschlagen, erfindungsgemäß ein Imprägniermittel aus 20 bis 60111, Polyäthylen oder Polypropylen mit einem Molekulargewicht von etwa 1000 bis 3000, 20 bis 75 °/o Hartwachs und 5 bis 20 °/o Polybutylen, Polyisobutylen oder Polyvinylisobutyläther mit einem Molekulargewicht von etwa 1000 bis 3000 zu benutzen. Zu besonders günstigen Verhältnissen kommt man, wenn man eine Zusammensetzung aus 400/0 Polyäthylen oder Polypropylen mit einem Molekulargewicht von etwa 1000 bis 3000, 45 bis 48 °/o Hartwachs und 12 bis 1501, Polybutylen oder Polyvinylisobutyläther mit einem Molekulargewicht von etwa 1000 bis 3000 verwendet. Ein solches Dreikomponentengemisch erfüllt bezüglich Verarbeitungsbedingungen, Lösungsmittelbeständigkeit, Temperaturbeständigkeit, Glättungseigenschaften und Klebefähigkeit die an ein Imprägniergemisch für Trägerfolien gestellten Forderungen ideal. Durch den Zusatz von Polyäthylen oder Polypropylen werden glatte glänzende Überzüge erhalten. Da Polyäthylen aber in flüssigem Zustand bei 120°C im Vergleich zu Hartwachs eine wesentlich höhere Viskosität besitzt, tritt bei höheren Zusätzen ein so starker Anstieg der Viskosität des Gemisches auf, daß eine einwandfreie Durchimprägnierung der Trägerfolien nicht mehr möglich ist. Der Polyäthylenanteil darf daher, z. B. bei einem Molekulargewicht von etwa 1000 bis 3000, 600/, nicht übersteigen. Mit abnehmendem Polyäthylenanteil wird hingegen der Wachsüberzug matt und bleibt teilweise an der abgelösten Dünnfolie haften.Further investigations have shown that the adhesive strength is strongly influenced by the composition of the impregnating agent. In order to achieve optimal conditions, it is proposed according to the invention to use an impregnating agent made from 20 to 60111, polyethylene or polypropylene with a molecular weight of about 1000 to 3000, 20 to 75% hard wax and 5 to 20% polybutylene, polyisobutylene or polyvinyl isobutyl ether a molecular weight of about 1000 to 3000 to use. Particularly favorable ratios are obtained if a composition of 400/0 polyethylene or polypropylene with a molecular weight of about 1000 to 3000, 45 to 48% hard wax and 12 to 1501, polybutylene or polyvinyl isobutyl ether with a molecular weight of about 1000 to 3000 used. Such a three-component mixture ideally fulfills the requirements placed on an impregnation mixture for carrier foils in terms of processing conditions, solvent resistance, temperature resistance, smoothing properties and adhesiveness. By adding polyethylene or polypropylene, smooth, glossy coatings are obtained. However, since polyethylene has a much higher viscosity in the liquid state at 120 ° C compared to hard wax, the viscosity of the mixture rises so sharply with higher additions that proper impregnation of the carrier films is no longer possible. The polyethylene content may therefore, for. B. at a molecular weight of about 1000 to 3000, 600 /, not exceed. As the proportion of polyethylene decreases, however, the wax coating becomes matt and partially sticks to the detached thin film.

Die Haftung der Dünnfolien auf den Trägern während der Verarbeitung wird durch den Kleberanteil (Polyisobutylen, Polybutylen, Polyvinylisobutyläther) bestimmt. Bei zu geringem Kleberanteil ist die Haftung nicht äüsreichend. Ein Kleberanteil über 20 °/o wirkt sich störend auf die Weiterverarbeitung aus.The adhesion of the thin films to the carrier during processing is determined by the amount of adhesive (polyisobutylene, polybutylene, polyvinyl isobutyl ether) certainly. If the amount of adhesive is too low, the adhesion is not sufficient. A glue portion over 20% has a disruptive effect on further processing.

Es hat sich als zweckmäßig erwiesen, je nach der Stärke der auf die Trägerfolie aufgebrachten Dünnfolien verschiedene Zusammensetzungen des Imprägniermittels zu verwenden. So ist z. B. für eine etwa 2,5 #t dicke Dünnfolie ein Imprägniermittelgemisch folgender Zusammensetzung besonders geeignet: 400/, niedermolekulares Polyäthylen oder Polypropylen (Molekulargewicht etwa 1000 bis 3000, Schmelzgewicht etwa 105°C), 4811/0 Superhartwachs (Molekulargewicht etwa 700, Schmelzpunkt etwa 110°C), 120/0 Polybutylen (Molekulargewicht etwa 1000 bis 3000).It has been found to be appropriate depending on the strength of the Thin films applied to the carrier film have different compositions of the impregnating agent to use. So is z. B. an impregnating agent mixture for an approximately 2.5 #t thick thin film the following composition is particularly suitable: 400 /, low molecular weight polyethylene or polypropylene (molecular weight about 1000 to 3000, melt weight about 105 ° C), 4811/0 super hard wax (molecular weight about 700, melting point about 110 ° C), 120/0 Polybutylene (molecular weight about 1000 to 3000).

Bei etwa 4 #L dicken Folien wird zweckmäßigerweise ein höherer Kleberanteil verwendet. Das Imprägniergemisch erhält dann folgende Zusammensetzung: 40°/o niedermolekulares Polyäthylen oder Polypropylen, 45 °/o Superhartwachs, 15 °/o Polybutylen.With foils around 4 #L thick, it is advisable to use a higher proportion of adhesive used. The impregnation mixture then has the following composition: 40% low molecular weight Polyethylene or polypropylene, 45% super hard wax, 15% polybutylene.

Claims (2)

Patentansprüche: 1. Verfahren zur Herstellung von elektrischen Dünnfolienkondensatoren, wobei dünne Isolierstoffolien auf mit hochschmelzenden Kohlenwasserstoffen, denen klebende Eigenschaften aufweisende Zusätze auf der Basis von polymerisierten Kohlenwasserstoffen wie niedermolekulares Polyisobutylen oder Polybutylen oder von polymerisierten Vinyläthern wie Polyvinylisobutyläther zugefügt wurden, imprägnierte Trägerfolien durch Auflackieren oder Aufkaschieren aufgebracht werden und den zur Herstellung elektrischer Kondensatoren erforderlichen Arbeitsgängen unterworfen werden, nach Patent 1250 001, d a d u r c h gekennzeichnet, daß als Imprägniermittel ein Gemisch aus 20 bis 600/, Polyäthylen oder Polypropylen mit einem Molekulargewicht von etwa 1000 bis 3000, 20 bis 75 °/o Hartwachs und 5 bis 2001, Polybutylen, Polyisobutylen oder Polyvinylisobutyläther mit einem Molekulargewicht von etwa 1000 bis 3000 verwendet wird. Claims: 1. Process for the production of electrical thin film capacitors, being thin insulating foils on with high-melting hydrocarbons, which Additives with adhesive properties based on polymerized hydrocarbons such as low molecular weight polyisobutylene or polybutylene or of polymerized vinyl ethers how polyvinyl isobutyl ether were added, impregnated carrier films by painting on or lamination can be applied and used for the production of electrical capacitors are subjected to necessary operations, according to patent 1250 001, d a d u r c h characterized that a mixture of 20 to 600 /, polyethylene as the impregnating agent or polypropylene with a molecular weight of about 1000 to 3000, 20th up to 75% hard wax and 5 to 2001, polybutylene, polyisobutylene or polyvinyl isobutyl ether having a molecular weight of about 1,000 to 3,000 is used. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Imprägniermittel eine Mischung aus 40°/o Polyäthylen oder Polypropylen mit einem Molekulargewicht von etwa 1000 bis 3000, 45 bis 48 °/o Hartwachs und 12 bis 15010 Polybutylen, Polyisobutylen oder Polyvinylisobutyläther mit einem Molekulargewicht von etwa 1000 bis 3000 verwendet wird.
2. The method according to claim 1, characterized in that a mixture of impregnating agents 40 ° / o polyethylene or polypropylene with a molecular weight of about 1000 to 3000, 45 to 48 per cent hard wax and 12 to 15010 polybutylene, polyisobutylene or Polyvinyl isobutyl ether with a Molecular weight of about 1000 up to 3000 is used.
DES68596A 1960-05-20 1960-05-20 Process for improving the adhesive strength of thin insulating foils that are painted or laminated onto a carrier foil that is previously impregnated Pending DE1297232B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL265007D NL265007A (en) 1960-05-20
NL131131D NL131131C (en) 1960-05-20
DES68596A DE1297232B (en) 1960-05-20 1960-05-20 Process for improving the adhesive strength of thin insulating foils that are painted or laminated onto a carrier foil that is previously impregnated
FR861124A FR1288661A (en) 1960-05-20 1961-05-08 Process for preparing thin insulating sheets, using an impregnated support and sheets conforming to those obtained
GB18372/61A GB910370A (en) 1960-05-20 1961-05-19 Improvements in or relating to methods of making supported films and films made by such methods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES68596A DE1297232B (en) 1960-05-20 1960-05-20 Process for improving the adhesive strength of thin insulating foils that are painted or laminated onto a carrier foil that is previously impregnated

Publications (1)

Publication Number Publication Date
DE1297232B true DE1297232B (en) 1969-06-12

Family

ID=7500406

Family Applications (1)

Application Number Title Priority Date Filing Date
DES68596A Pending DE1297232B (en) 1960-05-20 1960-05-20 Process for improving the adhesive strength of thin insulating foils that are painted or laminated onto a carrier foil that is previously impregnated

Country Status (3)

Country Link
DE (1) DE1297232B (en)
GB (1) GB910370A (en)
NL (2) NL131131C (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1159811A (en) * 1955-09-15 1958-07-02 Hunt Capacitors Ltd A Improvements to electric capacitors

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1159811A (en) * 1955-09-15 1958-07-02 Hunt Capacitors Ltd A Improvements to electric capacitors

Also Published As

Publication number Publication date
NL265007A (en) 1900-01-01
NL131131C (en) 1900-01-01
GB910370A (en) 1962-11-14

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