EP1814728A1 - Stamped product used to seal holes in a durable manner, in particular in sheet steel or in plastic pieces on car bodies - Google Patents

Stamped product used to seal holes in a durable manner, in particular in sheet steel or in plastic pieces on car bodies

Info

Publication number
EP1814728A1
EP1814728A1 EP05801705A EP05801705A EP1814728A1 EP 1814728 A1 EP1814728 A1 EP 1814728A1 EP 05801705 A EP05801705 A EP 05801705A EP 05801705 A EP05801705 A EP 05801705A EP 1814728 A1 EP1814728 A1 EP 1814728A1
Authority
EP
European Patent Office
Prior art keywords
hole
heat
closed
adhesive film
base layer
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.)
Withdrawn
Application number
EP05801705A
Other languages
German (de)
French (fr)
Inventor
Frank Kolmorgen
Torben Quednau
Andreas Meier
Patrick Gehringer
Audrey BÖHMER
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.)
Tesa SE
Original Assignee
Tesa SE
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 Tesa SE filed Critical Tesa SE
Publication of EP1814728A1 publication Critical patent/EP1814728A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/04—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/06—Sealing strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0815—Acoustic or thermal insulation of passenger compartments
    • B60R13/083—Acoustic or thermal insulation of passenger compartments for fire walls or floors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0846—Insulating elements, e.g. for sound insulation for duct, cable or rod passages, e.g. between engine and passenger compartments
    • B60R13/0853—Insulating elements, e.g. for sound insulation for duct, cable or rod passages, e.g. between engine and passenger compartments specially adapted for movable parts, e.g. gears levers, pedals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/24—Superstructure sub-units with access or drainage openings having movable or removable closures; Sealing means therefor
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/44—Number of layers variable across the laminate
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • 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
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • 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
    • B32B2274/00—Thermoplastic elastomer material
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2405/00—Adhesive articles, e.g. adhesive tapes
    • 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
    • B32B2605/00—Vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree

Definitions

  • the present invention relates to a stamped product for the permanent closing of holes, in particular in sheets or in plastic parts of automobile bodies.
  • the diameters of the holes are between 10 and 50 mm. Many of these holes need to be re-air and water-tight in the later process to prevent corrosion attacks by water or water vapor penetrating through the uncovered holes in the body. In addition, there is a requirement to significantly improve the noise insulation of the passenger compartment by closing the holes.
  • plastic plugs are usually used for closing body extensions that on the one hand in a particular case are not sure to close the hole and on the other hand are comparatively complex and expensive to produce.
  • a special, adapted to the hole size plug is required for each hole size. This means high logistical and administrative effort for the customer of the plug.
  • the object of the present invention is to provide a stamped article which is suitable for the permanent closing of holes, in particular in sheets or in plastic parts of automobile bodies. Furthermore, it should be ensured that said holes are closed in such a way that passage of moisture is excluded, the noise insulation is improved, and the holes are reliably closed even in the case of rockfall on the subfloor or mechanical stresses in the interior, in particular in the floor area.
  • the invention relates to a die for permanently sealing holes, in particular in sheets or in plastic parts of automobile bodies, with a at least partially self-adhesive coated base layer made of a heat-resistant support whose area is greater than the surface of the hole to be closed and in particular centrally on the adhesive side is provided with a first portion of a heat-activated adhesive film.
  • the area of the first portion is larger than the area of the hole to be closed and smaller than the area of the base layer, and the die is applied over the hole to be closed so that the hole is substantially covered by the first portion.
  • a second section of a heat-activatable thermoplastic adhesive film is present on the first section of the heat-activatable adhesive film, specifically on the side facing the hole, whose area is larger than the area of the hole to be closed and smaller as the surface of the base layer, in turn, the diecut in such a way over the hole to be closed is applied, that the hole is substantially covered by the second section.
  • the two sections of the heat-activatable film have the same dimensions.
  • the adhesive films are used to connect the diecut after activation by means of heat permanently and safely to the substrate (usually the vehicle body).
  • the preferred second adhesive sheet portion ensures that a good, stable and moisture-impermeable connection between the first portion and the substrate is made without the application of pressure.
  • a layered body is present between the base layer and the first portion of the heat-activatable adhesive film, which is particularly advantageously made of metal.
  • the layered body has one of high density or strength to increase the noise attenuation or strength of the entire diecut.
  • the carrier which in an advantageous development of the invention consists of an aluminum foil, a textile carrier or a plastic foil (for example PVC, PP, PET, PU), preferably has a thickness
  • cotton fabric is used, which in particular has a mesh count of 140 to 160, preferably 148 (means a warp count of warp 74 and weft 74) ) exhibit. More preferably, the number of shots 70 to 80 and / or the chain number 70 to 80.
  • all known textile supports such as woven, knitted or nonwoven fabrics can be used, whereby under "nonwoven” at least textile fabrics according to EN 29092 (1988) as well as stitchbonded nonwovens and similar systems to be understood. Also, lamination fabrics and knitted fabrics can be used.
  • the textile carrier in particular polyester, polypropylene, viscose, cotton wool or cotton fibers are provided.
  • the present invention is not limited to the materials mentioned, but it can, recognizable to those skilled to work without having to be inventive, a variety of other fibers for the production of the web can be used. It is important that the materials used have the required heat resistance.
  • a non-fogging diecut comprising a fogging-free support on which a fogging-free, pressure-sensitive adhesive is applied at least on one side.
  • various polymer systems can be selected as adhesives on the support, natural or synthetic rubber systems and acrylate systems in particular having proven advantageous if their adhesive properties and temperature resistance meet the requirements.
  • the adhesion to steel is at least 5 N / 25 mm.
  • an adhesive such an Acr ⁇ lathotmelt base is suitable which has a K value of at least 20, in particular greater than 30 (measured in each case in 1 wt .-% solution in toluene, 25 "C), obtainable by concentrating a solution of such Mass to a hotmelt processable system.
  • An adhesive can then be used which consists of the group of natural rubbers or synthetic rubbers or of any blend of natural rubbers and / or synthetic rubbers, the natural rubber or natural rubbers basically being made of all available qualities such as crepe, RSS, ADS, TSR or CV grades, depending on the required level of purity and viscosity, and the synthetic rubber or synthetic rubbers from the group of random copolymerized styrene-butadiene rubbers (SBR), butadiene rubbers (BR), synthetic polyisoprenes (IR), butyl rubbers (MR), halogenated butyl rubbers (XIIR), acrylate rubbers (ACM), ethylene vinyl acetate copolymers (EVA) and polyurethanes and / or blends thereof , Further, it is preferable to add to the rubbers, for the purpose of improving the processability, thermoplastic elastomers having a weight proportion of 10 to 50% by weight, based on the total elastomer content.
  • SIS styrene-isoprene-styrene
  • SBS styrene-butadiene-styrene
  • tackifying resins all previously known adhesive resins described in the literature can be used without exception. Mention may be made representatively of the rosins, their disproportionated, hydrogenated, polymerized, esterified derivatives and salts, the aliphatic and aromatic hydrocarbon resins, terpene resins and terpene phenolic resins. Any combination of these and other resins can be used to adjust the properties of the resulting adhesive as desired.
  • the presentation of the state of knowledge in the "Handbook of Pressure Sensitive Adhesive Technology" by Donatas Satas (van Nostrand, 1989) is expressly pointed out.
  • the heat-activatable adhesive films preferably have the following composition: i) a polymer in an amount of at least 30% by weight, wherein the first portion of the heat-activatable adhesive film is particularly preferably based on reactive polyurethane, polyamide, nitrile rubber with reactive phenolic resins or reactive epoxy resins and / or the second section on thermoplastic, non-reactive polyamides or
  • Epoxides ii) one or more tackifying resins in a proportion of 5 to 50% by weight and / or iii) epoxy resins with hardeners, if appropriate also accelerators, in a proportion of
  • the adhesive films preferably have a thickness of 10 to 500 ⁇ m.
  • the reactive adhesive film is a mixture of reactive resins which crosslink at temperatures above 120 ° C. and form a three-dimensional, high-strength polymer network, and of permanently elastic elastomers which counteract embrittlement of the product and thus permanent loads (compressions, strains). allow the Pro ⁇ product.
  • the elastomer is preferably selected from the group of polyolefins, polyesters, polyurethanes or polyamides or may be a modified rubber such as nitrile rubber or polyvinyl butyral, polyvinyl formal, polyvinyl acetate, carboxylated or epoxylated SEBS polymer. Above each of the elastomers are given, in which the diecut develops particularly advantageous properties. Due to the chemical crosslinking reaction (based on epoxides or phenolic resin condensation) of the resins at elevated temperature, high strengths are achieved between the adhesive film and the surface to be bonded and a high internal strength of the product is achieved.
  • the addition of the reactive resin / hardener systems also leads to a lowering of the softening temperature of the abovementioned polymers, which advantageously lowers their processing temperature and speed.
  • the suitable product is a self-adhesive product at room temperature or slightly elevated temperatures. When the product is heated, it also reduces the viscosity in the short term, allowing the product to wet even rough surfaces.
  • compositions for the adhesive film can be widely varied by changing the nature and proportion of the raw material.
  • further product properties such as, for example, color, thermal or electrical conductivity, can be achieved by specific additions of dyes, mineral or organic fillers, for example silicon dioxide, and / or carbon or metal powders.
  • the stamped body is permanently connected to the bodywork by briefly acting on the stamped high temperatures that lead to the activation of one or both adhesive films.
  • Particularly advantageous temperatures have been found to over 120 ° C and 200 0 C, which should act for thereby min for about twentieth
  • the stamped product according to the invention is superior to the known from the prior art solutions, especially at elevated mechanical stress. The same is true when considering the noise attenuation. Noise attenuation and strength are massively improved by the combination of base layer / adhesive film (s) / layered body. Furthermore, a single embodiment of the stamped product can cover a plurality of holes of different sizes.
  • the stamping is characterized by: • a very high load capacity / dielectric strength
  • punched article is intended to be explained in more detail with reference to a figure for the permanent closing of holes, in particular in metal sheets or in plastic parts of automobile bodies, without being intended to be limiting in any way.
  • FIG. 1 shows the state after the hole to be closed is closed by the action of heat.
  • a hole 6 is structurally present, it applies to be closed.
  • the area of the punched product is larger than the area of the hole 6 to be closed.
  • a second section 4 of a heat-activatable film is present, which has the same dimensions as the first section 3.
  • the stamped body is permanently connected to the body 5 by briefly acting on the stamped high temperatures that lead to the activation of the adhesive films 3,4.

Abstract

The invention relates to a stamped product which is used to seal holes in a durable manner, in particular in sheet steel or in plastic parts on car bodies. Said stamped product comprises a base layer with adhesive at least partially on one side and which comprises a heat-resistant layer, whereby the surface thereof is larger than the surface the surface of the hole which is to be sealed and which comprises a first section of a thermoactivable adhesive film, in particular in the centre of the side which is adhesive, wherby the suface thereof is larger than the surface of the hole which is to be sealed and smaller than the surface of the base layer. The stamped product is applied to the hole which is to be sealed in such a manner that said hole is covered, essentially, by the first section.

Description

Beschreibung description
Stanzling zum dauerhaften Verschließen von Löchern insbesondere in Blechen oder in Kunststoffteilen von AutomobilkarosserienPunch for permanent sealing of holes, especially in sheet metal or in plastic parts of car bodies
Die vorliegende Erfindung betrifft einen Stanzling zum dauerhaften Verschließen von Löchern insbesondere in Blechen oder in Kunststoffteilen von Automobilkarosserien.The present invention relates to a stamped product for the permanent closing of holes, in particular in sheets or in plastic parts of automobile bodies.
Bei der Produktion von modernen Automobilen ist es unumgänglich, dass während des Zusammenbaus in vielen einzelnen Teilen wie Blechen oder Kunststoffteilen unterschiedlich große Löcher konstruktiv bedingt entstehen. Üblicherweise liegen die Durchmesser der Löcher zwischen 10 und 50 mm. Viele dieser Löcher müssen im späteren Prozess wieder luft- und insbesondere wasserdicht verschlossen werden, um Korrossionsangriffe zu unterbinden, indem Wasser oder Wasserdampf durch die nicht abgedeckten Löcher in die Karosserie eindringt. Daneben besteht die Anforderung, durch das Verschließen der Löcher die Geräuschdämmung des Passagierinnenraums erheblich zu verbessern.In the production of modern automobiles, it is inevitable that arise during assembly in many individual parts such as sheets or plastic parts different sized holes constructive. Usually, the diameters of the holes are between 10 and 50 mm. Many of these holes need to be re-air and water-tight in the later process to prevent corrosion attacks by water or water vapor penetrating through the uncovered holes in the body. In addition, there is a requirement to significantly improve the noise insulation of the passenger compartment by closing the holes.
Momentan werden zum Verschließen von Karroserielöchem in der Regel Kunststoffstöpsel verwendet, die zum einen im Einzelfall nicht sicher das Loch verschließen und zum anderen vergleichsweise aufwändig und teuer herzustellen sind. Für jede Lochgröße ist ein spezieller, auf die Lochgröße angepaßter Stöpsel erforderlich. Die bedeutet hohen logistischen und verwaltungstechnischen Aufwand für den Abnehmer der Stöpsel.Currently, plastic plugs are usually used for closing body extensions that on the one hand in a particular case are not sure to close the hole and on the other hand are comparatively complex and expensive to produce. For each hole size a special, adapted to the hole size plug is required. This means high logistical and administrative effort for the customer of the plug.
Somit müssen an der Produktionslinie eine große Anzahl von Stöpseln verschiedener Größen in jeweils zugeordneten Lagerkästen vorgehalten werden. Des weiteren eignen sich zu diesem Zweck Klebebänder, die angepaßt auf die Lochgröße abgelängt oder gestanzt werden. Aber auch Klebebänder werden den im Markt steigenden Anforderungen nicht immer gerecht.Thus, a large number of plugs of different sizes must be kept in each assigned storage boxes on the production line. Furthermore, adhesive tapes are suitable for this purpose, which are cut to length or punched adapted to the hole size. But also tapes do not always meet the increasing demands in the market.
Aufgabe der vorliegenden Erfindung ist, einen Stanzling zur Verfügung zu stellen, der zum dauerhaften Verschließen von Löchern insbesondere in Blechen oder in Kunststoff¬ teilen von Automobilkarosserien geeignet ist. Des weiteren soll gewährleistet sein, dass besagte Löcher derart verschlossen sind, dass ein Durchtritt von Feuchtigkeit ausge- schlössen ist, die Geräuschdämmung verbessert wird, die Löcher auch bei Steinschlag am Unterboden beziehungsweise bei mechanischen Beanspruchungen im Innenraum, insbesondere im Bodenbereich, sicher verschlossen sind.The object of the present invention is to provide a stamped article which is suitable for the permanent closing of holes, in particular in sheets or in plastic parts of automobile bodies. Furthermore, it should be ensured that said holes are closed in such a way that passage of moisture is excluded, the noise insulation is improved, and the holes are reliably closed even in the case of rockfall on the subfloor or mechanical stresses in the interior, in particular in the floor area.
Gelöst wird diese Aufgabe durch einen Stanzling, wie er im Hauptanspruch niedergelegt ist. Gegenstand der Unteransprüche sind vorteilhafte Weiterentwicklungen des Erfin¬ dungsgegenstandes.This problem is solved by a diecut, as laid down in the main claim. Subject of the dependent claims are advantageous developments of the subject invention.
Demgemäß betrifft die Erfindung einen Stanzling zum dauerhaften Verschließen von Löchern insbesondere in Blechen oder in Kunststoffteilen von Automobilkarosserien, mit einer zumindest partiell einseitig selbstklebend ausgerüsteter Basisschicht aus einem hitzebeständigen Träger, dessen Fläche größer als die Fläche des zu verschließenden Loches ist und der insbesondere mittig auf der klebend ausgerüsteten Seite mit einem ersten Abschnitt einer hitzeaktivierbaren Klebfolie versehen ist. Die Fläche des ersten Abschnitts ist größer als die Fläche des zu verschließenden Loches und kleiner als die Fläche der Basisschicht, wobei der Stanzling derart über dem zu verschließenden Loch aufgebracht wird, dass das Loch im Wesentlichen vom dem ersten Abschnitt abgedeckt ist.Accordingly, the invention relates to a die for permanently sealing holes, in particular in sheets or in plastic parts of automobile bodies, with a at least partially self-adhesive coated base layer made of a heat-resistant support whose area is greater than the surface of the hole to be closed and in particular centrally on the adhesive side is provided with a first portion of a heat-activated adhesive film. The area of the first portion is larger than the area of the hole to be closed and smaller than the area of the base layer, and the die is applied over the hole to be closed so that the hole is substantially covered by the first portion.
In einer vorteilhaften Ausgestaltung der Erfindung ist auf dem ersten Abschnitt der hitze¬ aktivierbaren Klebfolie, und zwar auf der Seite, die dem Loch zugewandt ist, ein zweiter Abschnitt einer hitzeaktivierbaren thermoplastischen Klebfolie vorhanden, dessen Fläche größer als die Fläche des zu verschließenden Loches und kleiner als die Fläche der Basisschicht ist, wobei wiederum der Stanzling derart über dem zu verschließenden Loch aufgebracht wird, dass das Loch im Wesentlichen vom dem zweiten Abschnitt abgedeckt ist.In an advantageous embodiment of the invention, a second section of a heat-activatable thermoplastic adhesive film is present on the first section of the heat-activatable adhesive film, specifically on the side facing the hole, whose area is larger than the area of the hole to be closed and smaller as the surface of the base layer, in turn, the diecut in such a way over the hole to be closed is applied, that the hole is substantially covered by the second section.
Vorzugsweise weisen die beiden Abschnitte der hitzeaktivierbaren Folie die gleichen Abmessungen auf.Preferably, the two sections of the heat-activatable film have the same dimensions.
Die Klebfolien dienen dazu, den Stanzling nach Aktivierung mittels Wärme dauerhaft und sicher mit dem Untergrund (zumeist der Kfz-Karosserie) zu verbinden. Der bevorzugte zweite Klebfolienabschnitt stellt dabei sicher, dass ohne Anwendung von Druck eine gute, stabile und feuchtigkeitsundurchlässige Verbindung zwischen dem ersten Abschnitt und dem Untergrund hergestellt wird.The adhesive films are used to connect the diecut after activation by means of heat permanently and safely to the substrate (usually the vehicle body). The preferred second adhesive sheet portion ensures that a good, stable and moisture-impermeable connection between the first portion and the substrate is made without the application of pressure.
Weiter vorzugsweise ist zwischen der Basisschicht und dem ersten Abschnitt der hitze¬ aktivierbaren Klebfolie ein schichtförmiger Körper vorhanden, der besonders vorteilhaft aus Metall besteht. Der schichtförmige Körper weist eine mit hohe Dichte oder Festigkeit auf, um die Geräuschdämpfung oder die Festigkeit des gesamten Stanzlings zu erhöhen.Further preferably, a layered body is present between the base layer and the first portion of the heat-activatable adhesive film, which is particularly advantageously made of metal. The layered body has one of high density or strength to increase the noise attenuation or strength of the entire diecut.
Der Träger, der in einer vorteilhaften Weiterbildung der Erfindung aus einer Aluminium¬ folie, einem textilen Träger oder einer Kunststofffolie (beispielsweise PVC, PP, PET, PU) besteht, weist vorzugsweise eine Dicke aufThe carrier, which in an advantageous development of the invention consists of an aluminum foil, a textile carrier or a plastic foil (for example PVC, PP, PET, PU), preferably has a thickness
• zwischen 30 und 120 μm bei der Aluminiumfolie,Between 30 and 120 μm for the aluminum foil,
• zwischen 180 und 300 μm bei einem textilen Träger undBetween 180 and 300 μm in a textile carrier and
• zwischen 30 und 300 μm bei einer Folie.• between 30 and 300 μm for one foil.
Als Trägermaterial für den Stanzling werden in einer besonders vorteilhaften Weiterfüh¬ rung der Erfindung Baumwollgewebe verwendet, die insbesondere eine mesh-Zahl von 140 bis 160, bevorzugt 148 (bedeutet eine Fadenzahl in Kette (warp) von 74 und in Schuss (wreft) von 74) aufweisen. Weiter vorzugsweise betragen die Schusszahl 70 bis 80 und/oder die Kettenzahl 70 bis 80.As a carrier material for the diecut, in a particularly advantageous continuation of the invention, cotton fabric is used, which in particular has a mesh count of 140 to 160, preferably 148 (means a warp count of warp 74 and weft 74) ) exhibit. More preferably, the number of shots 70 to 80 and / or the chain number 70 to 80.
Als Trägermaterial für den Stanzling können des Weiteren alle bekannten textilen Träger wie Gewebe, Gewirke oder Vliese verwendet werden, wobei unter „Vlies" zumindest tex- tile Flächengebilde gemäß EN 29092 (1988) sowie Nähwirkvliese und ähnliche Systeme zu verstehen sind. Ebenfalls können Abstandsgewebe und -gewirke mit Kaschierung verwendet werden.As a carrier material for the diecut, furthermore, all known textile supports such as woven, knitted or nonwoven fabrics can be used, whereby under "nonwoven" at least textile fabrics according to EN 29092 (1988) as well as stitchbonded nonwovens and similar systems to be understood. Also, lamination fabrics and knitted fabrics can be used.
Als Ausgangsmaterialien für den textilen Träger sind insbesondere Polyester-, Polypro¬ pylen-, Viskose-, Zellwoll- oder Baumwollfasern vorgesehen. Die vorliegende Erfindung ist aber nicht auf die genannten Materialien beschränkt, sondern es können, für den Fachmann erkenntlich ohne erfinderisch tätig werden zu müssen, eine Vielzahl weiterer Fasern zur Herstellung des Vlieses eingesetzt werden. Wichtig ist, dass die eingesetzten Materialien die erforderliche Hitze bestand ig keit aufweisen.As starting materials for the textile carrier in particular polyester, polypropylene, viscose, cotton wool or cotton fibers are provided. However, the present invention is not limited to the materials mentioned, but it can, recognizable to those skilled to work without having to be inventive, a variety of other fibers for the production of the web can be used. It is important that the materials used have the required heat resistance.
Insbesondere vorteilhaft für den erfindungsgemäßen Gedanken ist ein foggingfreier Stanzling, umfassend einen foggingfreien Träger auf den zumindest einseitig eine fog- gingfreie, druckempfindliche Klebemasse aufgetragen ist.Particularly advantageous for the inventive concept is a non-fogging diecut, comprising a fogging-free support on which a fogging-free, pressure-sensitive adhesive is applied at least on one side.
Als Klebemassen auf dem Träger können prinzipiell verschiedene Polymersysteme gewählt werden, wobei sich besonders Natur- oder Synthesekautschuk- sowie Acrylat- systeme als vorteilhaft erwiesen haben, wenn ihre Klebeigenschaften und Temperatur¬ beständigkeiten den Anforderungen entsprechen. Weiter vorzugsweise beträgt die Kleb¬ kraft auf Stahl mindestens 5 N/25 mm. Als Klebemasse ist eine solche auf Acrγlathotmelt-Basis geeignet, die einen K-Wert von mindestens 20 aufweist, insbesondere größer 30 (gemessen jeweils in 1 Gew.-%iger Lösung in Toluol, 25 "C), erhältlich durch Aufkonzentrieren einer Lösung einer solchen Masse zu einem als Hotmelt verarbeitbaren System.In principle, various polymer systems can be selected as adhesives on the support, natural or synthetic rubber systems and acrylate systems in particular having proven advantageous if their adhesive properties and temperature resistance meet the requirements. More preferably, the adhesion to steel is at least 5 N / 25 mm. As an adhesive, such an Acrγlathotmelt base is suitable which has a K value of at least 20, in particular greater than 30 (measured in each case in 1 wt .-% solution in toluene, 25 "C), obtainable by concentrating a solution of such Mass to a hotmelt processable system.
Dann kann eine Klebemasse verwendet werden, die aus der Gruppe der Natur¬ kautschuke oder der Synthesekautschuke oder aus einem beliebigen Blend aus Natur- kautschuken und/oder Synthesekautschuken besteht, wobei der Naturkautschuk oder die Naturkautschuke grundsätzlich aus allen erhältlichen Qualitäten wie zum Beispiel Crepe-, RSS-, ADS-, TSR- oder CV-Typen, je nach benötigtem Reinheits- und Viskositätsniveau, und der Synthesekautschuk oder die Synthesekautschuke aus der Gruppe der statistisch copolymerisierten Styrol-Butadien-Kautschuke (SBR), der Butadien-Kautschuke (BR), der synthetischen Polyisoprene (IR), der Butyl-Kautschuke (MR), der halogenierten Butyl- Kautschuke (XIIR), der Acrylatkautschuke (ACM), der Etylen-Vinylacetat-Copolymeren (EVA) und der Polyurethane und/oder deren Blends gewählt werden können. Weiterhin vorzugsweise können den Kautschuken zur Verbesserung der Verarbeitbarkeit thermoplastische Elastomere mit einem Gewichtsanteil von 10 bis 50 Gew.-% zugesetzt werden, und zwar bezogen auf den Gesamtelastomeranteil. Stellvertretend genannt seien an dieser Stelle vor allem die besonders verträglichen Sty- rol-lsopren-Styrol- (SIS) und Styrol-Butadien-Styrol (SBS) -Typen. Als klebrig machende Harze sind ausnahmslos alle vorbekannten und in der Literatur beschriebenen Klebharze einsetzbar. Genannt seien stellvertretend die Kolophonium- harze, deren disproportionierte, hydrierte, polymerisierte, veresterte Derivate und Salze, die aliphatischen und aromatischen Kohlenwasserstoffharze, Terpenharze und Terpen- phenolharze. Beliebige Kombinationen dieser und weiterer Harze können eingesetzt werden, um die Eigenschaften der resultierenden Klebmasse wunschgemäß einzustellen. Auf die Darstellung des Wissensstandes im „Handbook of Pressure Sensitive Adhesive Technology" von Donatas Satas (van Nostrand, 1989) sei ausdrücklich hingewiesen.An adhesive can then be used which consists of the group of natural rubbers or synthetic rubbers or of any blend of natural rubbers and / or synthetic rubbers, the natural rubber or natural rubbers basically being made of all available qualities such as crepe, RSS, ADS, TSR or CV grades, depending on the required level of purity and viscosity, and the synthetic rubber or synthetic rubbers from the group of random copolymerized styrene-butadiene rubbers (SBR), butadiene rubbers (BR), synthetic polyisoprenes (IR), butyl rubbers (MR), halogenated butyl rubbers (XIIR), acrylate rubbers (ACM), ethylene vinyl acetate copolymers (EVA) and polyurethanes and / or blends thereof , Further, it is preferable to add to the rubbers, for the purpose of improving the processability, thermoplastic elastomers having a weight proportion of 10 to 50% by weight, based on the total elastomer content. By way of example, the particularly compatible styrene-isoprene-styrene (SIS) and styrene-butadiene-styrene (SBS) types may be mentioned as examples. As tackifying resins, all previously known adhesive resins described in the literature can be used without exception. Mention may be made representatively of the rosins, their disproportionated, hydrogenated, polymerized, esterified derivatives and salts, the aliphatic and aromatic hydrocarbon resins, terpene resins and terpene phenolic resins. Any combination of these and other resins can be used to adjust the properties of the resulting adhesive as desired. The presentation of the state of knowledge in the "Handbook of Pressure Sensitive Adhesive Technology" by Donatas Satas (van Nostrand, 1989) is expressly pointed out.
Die hitzeaktivierbaren Klebfolien weisen vorzugsweise folgende Zusammensetzung auf: i) ein Polymer mit einem Anteil von zumindest 30 Gew.-%, wobei der erste Abschnitt der hitzeaktivierbaren Klebfolie besonders bevorzugt auf reaktiven Polyurethan, Polyamid, Nitrilkautschuk mit reaktiven Phenolharzen oder reaktiven Epoxidharzen basiert und/oder der zweite Abschnitt auf thermoplastischer, nichtreaktiver Polyamide oderThe heat-activatable adhesive films preferably have the following composition: i) a polymer in an amount of at least 30% by weight, wherein the first portion of the heat-activatable adhesive film is particularly preferably based on reactive polyurethane, polyamide, nitrile rubber with reactive phenolic resins or reactive epoxy resins and / or the second section on thermoplastic, non-reactive polyamides or
Epoxide. ii) ein oder mehrere klebrig machende Harze mit einem Anteil von 5 bis 50 Gew.-% und/oder iii) Epoxydharze mit Härtern, gegebenenfalls auch Beschleunigern, mit einem Anteil vonEpoxides. ii) one or more tackifying resins in a proportion of 5 to 50% by weight and / or iii) epoxy resins with hardeners, if appropriate also accelerators, in a proportion of
5 bis 40 Gew.-%,From 5 to 40% by weight,
Vorzugsweise weisen die Klebfolien eine Dicke von 10 bis 500 μm auf.The adhesive films preferably have a thickness of 10 to 500 μm.
Die reaktive Klebfolie ist eine Mischung von reaktiven Harzen, die bei Temperaturen oberhalb 120 °C vernetzen und ein dreidimensionales, hochfestes Polymernetzwerk bil¬ den, und von dauerelastischen Elastomeren, die einer Versprödung des Produktes ent¬ gegenwirken und somit dauerhafte Belastungen (Stauchungen, Dehnungen) des Pro¬ duktes ermöglichen. Das Elastomer stammt bevorzugt aus der Gruppe der Polyolefine, Polyester, Poly¬ urethane oder Polyamide oder kann ein modifizierter Kautschuk sein wie zum Beispiel Nitrilkautschuk oder auch Polyvinylbutyral, Polyvinylformal, Polyvinylacetat, carboxylier- tes oder epoxyliertes SEBS-Polymer. Oben sind die jeweils die Elastomere angegeben, bei denen der Stanzling besonders vorteilhafte Eigenschaften entwickelt. Durch die chemische Vernetzungsreaktion (auf Basis von Epoxyden oder Phenolharz¬ kondensation) der Harze bei erhöhter Temperatur werden große Festigkeiten zwischen dem Klebefilm und der zu verklebenden Oberfläche erzielt und eine hohe innere Festig- keit des Produktes erreicht.The reactive adhesive film is a mixture of reactive resins which crosslink at temperatures above 120 ° C. and form a three-dimensional, high-strength polymer network, and of permanently elastic elastomers which counteract embrittlement of the product and thus permanent loads (compressions, strains). allow the Pro¬ product. The elastomer is preferably selected from the group of polyolefins, polyesters, polyurethanes or polyamides or may be a modified rubber such as nitrile rubber or polyvinyl butyral, polyvinyl formal, polyvinyl acetate, carboxylated or epoxylated SEBS polymer. Above each of the elastomers are given, in which the diecut develops particularly advantageous properties. Due to the chemical crosslinking reaction (based on epoxides or phenolic resin condensation) of the resins at elevated temperature, high strengths are achieved between the adhesive film and the surface to be bonded and a high internal strength of the product is achieved.
Die Zugabe der reaktiven Harz/Härtersystemen führt auch zu einer Erniedrigung der Erweichungstemperatur der oben genannten Polymere, was ihre Verarbeitungstempera¬ tur und -geschwindigkeit vorteilhaft senkt. Das geeignete Produkt ist ein bei Raumtempe- ratur oder leicht erhöhten Temperaturen selbsthaftendes Produkt. Beim Erhitzen des Produktes kommt es kurzfristig auch zu einer Erniedrigung der Viskosität wodurch das Produkt auch raue Oberflächen benetzen kann.The addition of the reactive resin / hardener systems also leads to a lowering of the softening temperature of the abovementioned polymers, which advantageously lowers their processing temperature and speed. The suitable product is a self-adhesive product at room temperature or slightly elevated temperatures. When the product is heated, it also reduces the viscosity in the short term, allowing the product to wet even rough surfaces.
Die Zusammensetzungen für die Klebfolie lassen sich durch Veränderung von Rohstoff- art und -anteil in weitem Rahmen variieren. Ebenso können weitere Produkteigenschaf¬ ten wie beispielsweise Farbe, thermische oder elektrische Leitfähigkeit durch gezielte Zusätze von Farbstoffen, mineralischen bzw. organischen Füllstoffen, beispielsweise Siliziumdioxid, und/oder Kohlenstoff- bzw. Metallpulvern erzielt werden.The compositions for the adhesive film can be widely varied by changing the nature and proportion of the raw material. Likewise, further product properties, such as, for example, color, thermal or electrical conductivity, can be achieved by specific additions of dyes, mineral or organic fillers, for example silicon dioxide, and / or carbon or metal powders.
Die Klebfolien zeichnen sich somit durch eine Reihe von Vorteilen aus:The adhesive films are thus characterized by a number of advantages:
• Sie besitzen eine hohe Kohäsion und Elastizität bei Raumtemperatur.• They have high cohesion and elasticity at room temperature.
• Sie zeigen eine hohe Adhäsion auf den üblichen Untergründen im Automobilbau.• They show a high adhesion on the usual substrates in the automotive industry.
Der Stanzling wird mit der Karosserie dauerhaft verbunden, indem auf den Stanzling kurzzeitig hohe Temperaturen einwirken, die zur Aktivierung der einen oder beiden Klebfolien führen. Als besonders vorteilhaft haben sich Temperaturen über 120 °C und unter 200 0C erwiesen, die für dabei für ungefähr 20 min einwirken sollten.The stamped body is permanently connected to the bodywork by briefly acting on the stamped high temperatures that lead to the activation of one or both adhesive films. Particularly advantageous temperatures have been found to over 120 ° C and 200 0 C, which should act for thereby min for about twentieth
Der erfindungsgemäße Stanzling ist besonders bei erhöhter mechanischer Beanspruchung den aus dem Stand der Technik bekannten Lösungen überlegen. Das gleiche gilt bei Betrachtung der Geräuschdämpfung. Die Geräuschdämpfung und die Festigkeit werden durch die Kombination Basisschicht/Klebfolie(n)/schichtförmiger Körper massiv verbessert. Des weiteren kann eine einzige Ausführungsform des Stanzlings eine Vielzahl von Löchern unterschiedlicher Größe abdecken.The stamped product according to the invention is superior to the known from the prior art solutions, especially at elevated mechanical stress. The same is true when considering the noise attenuation. Noise attenuation and strength are massively improved by the combination of base layer / adhesive film (s) / layered body. Furthermore, a single embodiment of the stamped product can cover a plurality of holes of different sizes.
Der Stanzling zeichnet sich aus durch: • eine sehr hohe Belastbarkeit/DurchschlagfestigkeitThe stamping is characterized by: • a very high load capacity / dielectric strength
• sehr gute Abdichtung gegen Feuchtigkeit/Feuchtigkeitsbarriere• very good seal against moisture / moisture barrier
• gute Abdichtung gegen Geräusche/Lärmdämpfung• good seal against noise / noise reduction
• einfache und kostengünstige Möglichkeit durch Einkaschieren von schweren Materialien, zum Beispiel Metallplättchen, um eine zusätzliche hohe Festigkeit des Verbundes und eine Geräuschdämpfung zu erzielen.• Easy and cost-effective way by laminating heavy materials, such as metal plates, to achieve additional high strength of the composite and noise attenuation.
Im Folgenden soll anhand einer Figur der Stanzling zum dauerhaften Verschließen von Löchern insbesondere in Blechen oder in Kunststoffteilen von Automobilkarosserien näher erläutert werden, ohne in irgendeiner Form einschränkend wirken zu sollen.In the following, the punched article is intended to be explained in more detail with reference to a figure for the permanent closing of holes, in particular in metal sheets or in plastic parts of automobile bodies, without being intended to be limiting in any way.
Es zeigtIt shows
Figur 1 den Zustand, nachdem durch Wärmeeinwirkung das zu ver¬ schließende Loch verschlossen ist.FIG. 1 shows the state after the hole to be closed is closed by the action of heat.
In der Karosserie 5 ist ein Loch 6 konstruktiv bedingt vorhanden, das es zu verschließen gilt.In the body 5, a hole 6 is structurally present, it applies to be closed.
Hierzu wird ein Stanzling mit einer Basisschicht 1, die einen textilen Träger aus Gewebe aufweist, der mit einer Klebeschicht ausgerüstet ist, derart auf dem Loch 6 fixiert, dass das Loch 6 vollständig vom Stanzling abgedeckt ist.For this purpose, a stamped product with a base layer 1, which has a fabric carrier made of tissue, which is equipped with an adhesive layer, fixed on the hole 6, that the hole 6 is completely covered by the blank.
Die Fläche des Stanzlings ist größer als die Fläche des zu verschließenden Loches 6.The area of the punched product is larger than the area of the hole 6 to be closed.
Mittig auf der Basisschicht 1 , und zwar auf der klebend ausgerüsteten Seite, befindet sich ein schichtförmiger Körper 2 aus Metall. Auf dem Metallplättchen 2 ist ein erster Abschnitt 3 einer hitzeaktivierbaren Klebfolie vor¬ handen, dessen Fläche größer als die Fläche des zu verschließenden Loches 6 und klei¬ ner als die Fläche der Basisschicht 1 , aber größer als der schichtförmige Körper 2 ist.Centered on the base layer 1, on the adhesive side, is a layered metal body 2. A first section 3 of a heat-activatable adhesive film whose surface is larger than the surface of the hole 6 to be closed and smaller than the surface of the base layer 1 but larger than the layered body 2 is present on the metal plate 2.
Auf dem ersten Abschnitt 3 der hitzeaktivierbaren Klebfolie ist ein zweiter Abschnitt 4 einer hitzeaktivierbaren Folie vorhanden, der die gleichen Abmessungen wie der erste Abschnitt 3 aufweist.On the first section 3 of the heat-activatable adhesive film, a second section 4 of a heat-activatable film is present, which has the same dimensions as the first section 3.
Der Stanzling wird mit der Karosserie 5 dauerhaft verbunden, indem auf den Stanzling kurzzeitig hohe Temperaturen einwirken, die zur Aktivierung der Klebfolien 3,4 führen. The stamped body is permanently connected to the body 5 by briefly acting on the stamped high temperatures that lead to the activation of the adhesive films 3,4.

Claims

Patentansprüche claims
1. Stanzling zum dauerhaften Verschließen von Löchern insbesondere in Blechen oder in Kunststoffteilen von Automobilkarosserien, mit einer zumindest partiell einseitig selbstklebend ausgerüsteter Basisschicht aus einem hitze bestand igen Träger, dessen Fläche größer als die Fläche des zu ver¬ schließenden Loches ist und der insbesondere mittig auf der klebend ausgerüsteten Seite mit einem ersten Abschnitt einer hitzeaktivierbaren Klebfolie versehen ist, des- sen Fläche größer als die Fläche des zu verschließenden Loches und kleiner als die1. punched for permanent sealing holes in particular in sheets or in plastic parts of automobile bodies, with a self-adhesive at least partially on one side base layer of a heat-resistant carrier whose surface is larger than the surface of the closing ver¬ to be closed and the particular center the adhesive-equipped side is provided with a first portion of a heat-activatable adhesive film whose area is greater than the area of the hole to be closed and smaller than that
Fläche der Basisschicht ist, wobei der Stanzling derart über dem zu verschließenden Loch aufgebracht wird, dass das Loch im wesentlichen vom dem ersten Abschnitt abgedeckt ist.Surface of the base layer is, wherein the punched product is applied over the hole to be closed, that the hole is substantially covered by the first portion.
2. Stanzling nach Anspruch 1 , dadurch gekennzeichnet, dass auf dem ersten Abschnitt der hitzeaktivierbaren Klebfolie, und zwar auf der Seite, die dem Loch zugewandt ist, ein zweiter Abschnitt einer thermoplastischen hitzeaktivierbaren Klebfolie versehen ist, dessen Fläche größer als die Fläche des zu verschließenden Loches und kleiner als die Fläche der Basisschicht ist, wobei der Stanzling derart über dem zu ver- schließenden Loch aufgebracht wird, dass das Loch im wesentlichen vom dem zwei¬ ten Abschnitt abgedeckt ist.2. punched product according to claim 1, characterized in that on the first portion of the heat-activatable adhesive film, on the side facing the hole, a second portion of a thermoplastic heat-activated adhesive film is provided, whose area is greater than the surface of the to be closed Hole and smaller than the surface of the base layer, wherein the punched product is applied over the hole to be closed in such a way that the hole is substantially covered by the zwei¬ th section.
3. Stanzling nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, dass zwischen der Basisschicht und dem ersten Abschnitt der hitzeaktivierbaren Klebfolie ein schichtförmiger Körper vorhanden ist.3. punched product according to claims 1 or 2, characterized in that between the base layer and the first portion of the heat-activated adhesive film, a layered body is present.
4. Stanzling nach zumindest einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die hitzeaktivierbaren Klebfolien vorzugsweise folgende Zusammensetzung aufweisen: ein Polymer mit einem Anteil von zumindest 30 Gew.-%, wobei der erste Abschnitt der hitzeaktivierbaren Klebfolie besonders bevorzugt reaktiven Polyurethan, Poly¬ amid, Nitrilkautschuk mit reaktiven Phenolharzen oder reaktiven Epoxidharzen basiert und/oder der zweite Abschnitt auf thermoplastischen Polyamid oder Epoxid, ein oder mehrere klebrig machende Harze mit einem Anteil von 5 bis 50 Gew.-% und/oder Epoxidharze mit Härtern, gegebenenfalls auch Beschleunigern, mit einem Anteil von 5 bis 40 Gew.-%.4. Punch according to at least one of claims 1 to 3, characterized in that the heat-activatable adhesive films preferably have the following composition: a polymer having a content of at least 30 wt .-%, wherein the first portion of the heat-activatable adhesive film particularly preferably reactive polyurethane, poly ¬ amide, nitrile rubber with reactive phenolic resins or reactive epoxy resins based and / or the second section on thermoplastic polyamide or epoxy, one or more tackifying resins in a proportion of 5 to 50 wt .-% and / or Epoxy resins with hardeners, optionally also accelerators, in a proportion of 5 to 40 wt .-%.
5. Stanzling nach zumindest einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Klebfolien eine Dicke von 10 bis 500 μm aufweisen.5. punched product according to at least one of the preceding claims, characterized in that the adhesive films have a thickness of 10 to 500 microns.
6. Stanzling nach zumindest einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass als Trägermaterial eine Aluminiumfolie, ein textiler Träger oder eine Kunststoff¬ folie (beispielsweise PVC, PP, PET, PU) verwendet werden, insbesondere ein Baumwollgewebe, das eine Schusszahl von 70 bis 80 und/oder eine Kettenzahl von6. Punch according to at least one of the preceding claims, characterized in that the carrier material used is an aluminum foil, a textile carrier or a plastic foil (for example PVC, PP, PET, PU), in particular a cotton fabric having a number of shots from 70 to 80 and / or a chain number of
70 bis 80 aufweist.70 to 80 has.
7. Stanzling nach zumindest einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der schichtförmige Körper aus Metall besteht. 7. punched product according to at least one of the preceding claims, characterized in that the layered body consists of metal.
EP05801705A 2004-11-16 2005-11-01 Stamped product used to seal holes in a durable manner, in particular in sheet steel or in plastic pieces on car bodies Withdrawn EP1814728A1 (en)

Applications Claiming Priority (2)

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DE102004055324A DE102004055324A1 (en) 2004-11-16 2004-11-16 Punch for permanent sealing of holes, especially in sheet metal or in plastic parts of car bodies
PCT/EP2005/055679 WO2006053827A1 (en) 2004-11-16 2005-11-01 Stamped product used to seal holes in a durable manner, in particular in sheet steel or in plastic pieces on car bodies

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EP1814728A1 true EP1814728A1 (en) 2007-08-08

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EP (1) EP1814728A1 (en)
JP (1) JP2008520453A (en)
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CN101056762A (en) 2007-10-17
JP2008520453A (en) 2008-06-19
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KR20070088670A (en) 2007-08-29
DE102004055324A1 (en) 2006-05-18

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