DE19900632A1 - Making heat-resistant plastic products from melt adhesive, including electrical components, is achieved by e.g. molding with cross-linking using peroxides and radiation - Google Patents
Making heat-resistant plastic products from melt adhesive, including electrical components, is achieved by e.g. molding with cross-linking using peroxides and radiationInfo
- Publication number
- DE19900632A1 DE19900632A1 DE1999100632 DE19900632A DE19900632A1 DE 19900632 A1 DE19900632 A1 DE 19900632A1 DE 1999100632 DE1999100632 DE 1999100632 DE 19900632 A DE19900632 A DE 19900632A DE 19900632 A1 DE19900632 A1 DE 19900632A1
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- Prior art keywords
- melt adhesive
- hot melt
- shaping
- crosslinking
- article
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Classifications
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- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14639—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles for obtaining an insulating effect, e.g. for electrical components
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
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- 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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles
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- 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
- C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
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- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
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- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/085—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using gamma-ray
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0097—Glues or adhesives, e.g. hot melts or thermofusible adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/16—Fillers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3055—Cars
- B29L2031/3061—Number plates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
- H01R43/24—Assembling by moulding on contact members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
Die Erfindung betrifft die Herstellung beliebig geformter Ge genstände aus Schmelzklebstoff. Insbesondere sollen dabei zum Beispiel elektrische Anschlüsse umhüllt und abgedichtet wer den. Nach der Formgebung soll der Gegenstand hitzebeständig sein.The invention relates to the production of any shape Ge objects made of hot melt adhesive. In particular, Example electrical connections enveloped and sealed who the. After shaping, the object should be heat resistant his.
Zu diesem Zweck bisher verwendete Verfahren basieren auf meh reren Verfahrensschritten und werden unter Verwendung ver schiedener Werkstoffe ausgeführt. Z. B. dient ein meist ther moplastischer Werkstoff dabei zur Formgebung, während ein nachfolgender Vergießprozeß mit einem duromeren Material dazu verwendet wird, die Dichtigkeit und die Hitzebeständigkeit des geformten Gegenstandes zu erreichen. Eine weitere Mög lichkeit liegt in der Anwendung von thermoplastischen "hart- weich Systemen", die z. B. in der Zweikomponenten-Spritzgieß echnik hergestellt werden. Hierbei werden durch die "Hartkom ponente" die Funktionsflächen (z. B. Gehäuse) erzeugt und die "Weichkomponente" (z. B. thermoplastisches Elastomer) über nimmt die Dichtfunktion nach dem O-Ring Prinzip. Es sind wei terhin Verfahren bekannt, bei denen durch Aufbringen von Haftvermittlern auf metallische Durchführungen oder die Akti vierung von Kunststoff- oder Metalloberflächen (z. B. Plasma behandlung) eine Dichtfunktion zu erreichen versucht wird.Methods used to date for this purpose are based on meh rere procedural steps and are using ver made of different materials. For example, a mostly serves ther Moplastic material for shaping while a subsequent casting process with a thermoset material is used, the tightness and heat resistance of the shaped object. Another possibility possibility lies in the use of thermoplastic "hard soft systems ", for example, in two-component injection molding echnik. The "Hartkom component "generates the functional surfaces (e.g. housing) and the "Soft component" (e.g. thermoplastic elastomer) over takes the sealing function according to the O-ring principle. It's white terhin known processes in which by applying Adhesion promoters on metallic bushings or the Akti crossing of plastic or metal surfaces (e.g. plasma treatment) an attempt is made to achieve a sealing function.
Der Nachteil dieser Vorgehensweisen besteht zum einen in dem hohen, in der Vielzahl der Verfahrensschritte begründeten, Prozeßaufwand. Zum anderen bedingt die Verwendung unter schiedlicher Werkstoffe eine nicht unerhebliche Sortenviel falt, was mit hohen Kosten für Material (z. B. für Beschaf fung, Lagerung) und Entsorgung einhergeht. Trotz dieses er heblichen Aufwands werden oft nur unzureichende Ergebnisse bezüglich der Dichtheit erreicht. The disadvantage of these approaches is that high, due to the multitude of procedural steps, Process effort. On the other hand, the use requires a wide variety of different materials folds, which entails high costs for material (e.g. for procurement treatment, storage) and disposal. Despite this he Significant effort often leads to inadequate results achieved in terms of tightness.
Ziel muß es demnach sein, die Zahl der Verfahrensschritte oder die Zahl der Materialien zu reduzieren. Idealerweise er reicht man durch geeignete Maßnahmen gleichzeitig auf der Ma terial- und auf der Prozeßseite eine Vereinfachung mit ent sprechend hohem Einsparpotential.The goal must therefore be the number of procedural steps or reduce the number of materials. Ideally, he is reached by suitable measures at the same time on the Ma material and on the process side a simplification with ent high savings potential.
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren be reitzustellen, mit dem beliebig geformte und hitzebeständige Gegenstände aus einem einzigen Material hergestellt werden können.The object of the present invention is to provide a method with the arbitrarily shaped and heat-resistant Objects can be made from a single material can.
Diese Aufgabe wird erfindungsgemäß durch ein Verfahren nach Patentanspruch 1 gelöst. Vorteilhafte Ausgestaltungen der Er findung sowie daraus hergestellte Gegenstände sind den weite ren Ansprüchen zu entnehmen.According to the invention, this object is achieved by a method Claim 1 solved. Advantageous embodiments of the Er invention and objects made from it are vast see their claims.
Die Erfindung geht von der Verwendung eines Schmelzklebstoffs aus. Unter Schmelzklebstoff ist ein Kunststoff zu verstehen, der sich bei Erwärmung verformt und der vorteilhafterweise zusätzlich gegenüber einem oder mehreren Werkstoffen Haftei genschaften besitzt. Dies kann ein Schmelzklebstoff auf der Basis von Polyamid, Polyurethan, Polyester, Polyolefinen oder auch ein anderer, insbesondere auch Mischungen daraus, sein.The invention is based on the use of a hot melt adhesive out. Hot melt adhesive means a plastic, which deforms when heated and which advantageously in addition to one or more materials adhesive owns properties. This can be a hot melt adhesive on the Based on polyamide, polyurethane, polyester, polyolefins or also another, in particular also mixtures thereof.
Allein die Verwendung eines solchen Schmelzklebstoffes reicht jedoch nicht aus, um die gestellte Aufgabe zu lösen. Insbe sondere wäre ein so hergestellter Gegenstand nicht hitzebe ständig. Es bedarf also weiterer Maßnahmen zur Herbeiführung genau dieser Eigenschaft. Erfindungsgemäß wird daher der Schmelzklebstoff während oder nach der Formgebung durch che mische Modifikation hitzebeständig gemacht.The use of such a hot melt adhesive alone is sufficient but not enough to solve the task. In particular in particular, an article produced in this way would not be heat-sensitive constantly. So further measures are needed to achieve this exactly this property. According to the invention Hot melt adhesive during or after shaping by che mix modification made heat resistant.
Dabei ist es besonders vorteilhaft, den Schmelzklebstoff durch Vernetzung zu modifizieren, weil z. B. durch Schaffung zusätzlicher Molekülbindungen die Temperaturstabilität erhöht wird. Diese Vernetzung kann beispielsweise durch Vernetzungs zusätze oder Vernetzungsverstärker erfolgen, die dem Schmelz klebstoff beigemengt werden. Die Vernetzungszusätze erfüllen die Funktion von Radikalstartern. Als Vernetzungsverstärker kommen vorzugsweise kleine Moleküle zum Einsatz, die mehrere Bindungen zu anderen Molekülen ausbilden können und dabei zur Vernetzung führen.It is particularly advantageous to use the hot melt adhesive to modify through networking, because z. B. by creation additional molecular bonds increases the temperature stability becomes. This networking can be done, for example, by networking additives or crosslinking enhancers are made to the enamel glue can be added. Meet the networking additions the function of radical starters. As a networking amplifier small molecules are preferably used, the multiple Can form bonds to other molecules and thereby to Lead networking.
Diese Radikalstarter werden beispielsweise durch erhöhte Tem peraturen aktiviert, so daß die Vernetzung erstens nach oder, zweitens, bereits während der Formgebung erfolgen kann. Im zweiten Fall kann ein zusätzlicher Prozeßschritt entfallen. Als Radikalstarter können Peroxide (z. B. Dibenzoylperoxide, Di(tert.amyl)peroxide, Di(tert.butyl)peroxide, tert.Butyl eroxybenzoate oder tert.Butylperoxy-2-ethylhexanoate) verwen det werden.These radical starters are caused, for example, by increased temperatures temperatures activated so that the networking firstly after or secondly, can already take place during the shaping. in the in the second case, an additional process step can be omitted. Peroxides (e.g. dibenzoyl peroxides, Di (tert.amyl) peroxides, di (tert.butyl) peroxides, tert.butyl eroxybenzoate or tert.butylperoxy-2-ethylhexanoate) be det.
Eine von mehreren weiteren, neben der Erhitzung bestehenden Möglichkeiten zur Aktivierung der Radikalstarter ist die Ver wendung radioaktiver bzw. elektromagnetischer Strahlung nach der Formgebung. Beispielsweise ist UV-Strahlung eine gängige Möglichkeit, um eine Vernetzung auszulösen. Die Verwendung von Gammastrahlung ist wegen der hohen Energien besonders vorteilhaft. Diese sind zum Aufbrechen chemischer Bindungen in strahlungslabilen Stoffen besonders geeignet, wobei sich eine Vernetzung durch Neubildung von Bindungen an anderer Stelle bzw. mit anderen Molekülen ergibt.One of several others that exist besides the heating Ways to activate the radical starter is Ver radioactive or electromagnetic radiation the shape. For example, UV radiation is a common one Possibility to trigger networking. The usage of gamma radiation is special because of the high energies advantageous. These are for breaking chemical bonds Particularly suitable in radiation-unstable substances, whereby networking through the formation of new bonds with others Site or with other molecules.
Je nachdem, welche zusätzliche Materialkomponente in den her zustellenden Gegenstand einzubinden ist (zum Beispiel metal lische Kontaktstifte), kann ein dazu passender Schmelzkleb stoff ausgewählt werden.Depending on which additional material component in the forth the object to be delivered must be integrated (e.g. metal contact pins), a matching hot melt adhesive can be used selected fabric.
Die Formgebung kann u. a. durch Spritzgießen erfolgen. Die beim Spritzgießen verwendeten Werkzeugformen werden während der Formgebung beheizt. Die dafür notwendigen Temperaturen hängen vom jeweils verwendeten Schmelzklebstoff ab, sind je doch nicht geringer als 100°C. The shape can u. a. done by injection molding. The Molds used in injection molding are used during the shape heated. The temperatures required for this depend on the hot melt adhesive used in each case but not less than 100 ° C.
Aufgrund der Haftungseigenschaft des Schmelzklebstoffes ist es, besonders im Fall der Verwendung von Metallen, aus denen üblicherweise auch Formgebungswerkzeuge hergestellt werden, zu einfachen Entformung des fertigen Gegenstandes vorteil haft, die Werkzeuge mit Antihaftmitteln zu beschichten. Dafür kann beispielsweise Teflon verwendet werden.Due to the adhesive property of the hot melt adhesive it, especially in the case of using metals from which shaping tools are usually also produced, advantage for easy demolding of the finished object adhesive to coat the tools with non-stick agents. Therefore For example, Teflon can be used.
Für die beliebige Formung des herzustellenden Gegenstandes nutzt man die Eigenschaft des Schmelzklebstoffes, sich unter Erhitzung zu verformen. Dies kann beispielsweise bei Polyamid und Polyester zwischen 260 und 280°C und bei Polyolefinen zwischen 190 und 240°C der Fall sein.For any shape of the object to be manufactured if one uses the property of the hot melt adhesive, under Deform heating. This can be the case with polyamide, for example and polyester between 260 and 280 ° C and for polyolefins between 190 and 240 ° C.
Erfindungsgemäß hergestellte und beliebig geformte Gegenstän de weisen zusätzliche Eigenschaften auf, die sich nicht zwin gend aus dem Verfahren selbst herleiten. Die Gegenstände kön nen Funktionsteile sein, wie beispielsweise Haken oder Käst chen, die in Bauelementen, wie beispielsweise Relais, Schal ter oder Sensoren eingesetzt werden.Objects produced according to the invention and of any shape de have additional properties that are not mutually exclusive derive from the procedure itself. The objects can NEN functional parts, such as hooks or boxes chen that in components such as relays, scarf ter or sensors are used.
Im Hinblick auf die Art des Gegenstandes werden die mechani schen Eigenschaften, insbesondere Festigkeit und Verwindungs steifigkeit vorgegeben. Diese Eigenschaften erreicht man durch Zusätze, die dem Schmelzklebstoff beigefügt werden. Diese Zusätze können zum Beispiel anorganische Füll- und Ver stärkungsstoffe oder Glasfasern oder Mischungen daraus sein. Als anorganische Füll- und Verstärkungsstoffe kommen insbe sondere in Betracht: Talkum, Kaolin, Calciumcarbonat, Glim mer, Wollastonit Bariumsulfat, Glaskugeln, Ruß, Graphit, Me tallpulver, Metallflakes, Metallfasern, Kohlenstoffasern und metallisierte Polymerfasern.With regard to the type of object, the mechani properties, in particular strength and torsion stiffness specified. You achieve these properties by additives that are added to the hot melt adhesive. These additives can, for example, inorganic filling and Ver be reinforcing materials or glass fibers or mixtures thereof. In particular, inorganic fillers and reinforcing materials special considerations: talc, kaolin, calcium carbonate, glim mer, wollastonite barium sulfate, glass balls, soot, graphite, me tall powder, metal flakes, metal fibers, carbon fibers and metallized polymer fibers.
Um die Eigenschaften des Schmelzklebstoffs nicht über die Ma ßen zu verändern, ist es besonders vorteilhaft, dem Gewichts anteil dieser Zusätze gewisse Grenzen zu setzen. Üblicherwei se liegt dieser bei 0 bis 60%, vorzugsweise bei 15 bis 40%. To the properties of the hot melt adhesive does not have the Ma It is particularly beneficial to change the weight limit certain proportions of these additives. Usually This is 0 to 60%, preferably 15 to 40%.
Wie man bereits seiner Bezeichnung entnimmt, ist ein Schmelz klebstoff nicht nur unter Erwärmung leicht formbar, sondern er haftet vorteilhafterweise auch gut auf den verschiedensten Werkstoffen, vorausgesetzt, man wählt die geeignete Kombina tion aus Schmelzklebstoff und Materialkomponente. Diese Hafteigenschaft bleibt auch nach der erfindungsgemäßen chemi schen Modifikation erhalten. Der nach dem Klebevorgang zwi schen dem Schmelzklebstoff und dem Werkstoff bestehende Stoffschluß kann das Vordringen von Flüssigkeiten und/oder Gasen zur Grenzfläche Schmelzklebstoff/Werkstoff verhindern. In diesem Fall erfüllt der Schmelzklebstoff zusätzlich eine Dichtfunktion.As one can already see from its name, it is an enamel Adhesive not only easy to shape when heated, but also it advantageously also adheres well to a wide variety of different types Materials, provided you choose the right combination tion of hot melt adhesive and material component. This Adhesive property remains even after the chemi according to the invention received modification. The after the gluing process between existing hot melt adhesive and the material Cohesion can be the penetration of liquids and / or Prevent gases to the hot melt / material interface. In this case, the hot melt adhesive also fulfills one Sealing function.
Diese Dichtfunktion nutzt man besonders vorteilhafterweise aus zur Umhüllung und gleichzeitigen Abdichtung elektrischer Anschlüsse unter Verwendung des erfindungsgemäßen Verfahrens, wobei zusätzlich die elektrische Isolierfunktion des Schmelz klebstoffs zum Tragen kommt, insbesondere dann, wenn mehrere mit verschiedenen elektrischen Potentialen beaufschlagbare elektrische Kontakte umhüllt werden. Ein klassisches Beispiel dafür wäre die einfache, kostengünstige und schnelle Herstel lung eines Steckers.This sealing function is used particularly advantageously off for wrapping and at the same time sealing electrical Connections using the method according to the invention, with the additional electrical insulation function of the enamel adhesive comes into play, especially if there are several with different electrical potentials electrical contacts are encased. A classic example for that would be the simple, inexpensive and quick production a connector.
Im folgenden wird die Erfindung anhand eines Ausführungsbei spiels und der dazugehörigen Figur näher erläutert.In the following, the invention is illustrated by means of an embodiment game and the associated figure explained in more detail.
Fig. 1 zeigt einen erfindungsgemäß hergestellten Stecker im schematischen Querschnitt. Fig. 1 shows a connector manufactured according to the invention in a schematic cross section.
Bei der erfindungsgemäßen Herstellung eines Steckers werden zwei elektrische Kontaktstifte 1 mit Anschlußelementen 6 und daran befindlichen elektrischen Leitungen 5 mit Schmelzkleb stoff umspritzt, der das Gehäuse 2 bildet. Die Formgebung er folgt unter Erwärmung 8, z. B. in einer Werkzeugform, die Vernetzung im selben Schritt oder anschließend durch Gamma strahlung 7. Das Gehäuse 2 weist nach außen hin geformte Rast elemente 3 auf. Wenn auch nicht unbedingt das ganze Gehäu se, so müssen wenigstens diese eine bestimmte mechanische Mindestfestigkeit aufweisen, die durch dem Schmelzklebstoff beigefügte, geeignete und an sich bekannte Zusatzstoffe er reicht wird.In the manufacture of a plug according to the invention, two electrical contact pins 1 with connection elements 6 and electrical lines 5 located thereon are extrusion-coated with hot-melt adhesive, which forms the housing 2 . The shape he follows under heating 8 , z. B. in a mold, networking in the same step or subsequently by gamma radiation 7th The housing 2 has outwardly shaped locking elements 3 . If not necessarily the whole housing, then at least these must have a certain minimum mechanical strength, which is achieved by the hot melt adhesive added, suitable and known additives.
Zur weiteren Verschaltung des Steckers befinden sich am unte ren Ende der elektrischen Leitungen 5 Lötösen 4, an die wei tere Leitungen angeschlossen werden können. Aufgrund der aus der Vernetzung resultierenden Hitzebeständigkeit des gesamten Gehäuses kann dies schnell und rationell mittels eines Lötba des geschehen, in das der gesamte untere Teil des Steckers eingetaucht wird. Der zwischen dem geeignet zu wählenden Schmelzklebstoff und den elektrischen Kontaktstiften 1 bzw. den elektrischen Leitungen 5 und den Anschlußelementen 6 be stehende Stoffschluß dichtet den Stecker gegen von außen ein dringende Flüssigkeiten und Gase ab und verhindert so insbe sondere eine Korrosion der metallischen Teile oder gar einen aus eindringender Feuchtigkeit resultierenden elektrischen Kriechstrom.For further interconnection of the plug are 5 loops 4 at the lower end of the electrical lines, to which further lines can be connected. Due to the heat resistance of the entire housing resulting from the cross-linking, this can be done quickly and efficiently by means of a soldering wire into which the entire lower part of the plug is immersed. The standing between the suitable hot melt adhesive and the electrical contact pins 1 or the electrical lines 5 and the connection elements 6 be standing material seal the connector against an outside of urgent liquids and gases and thus prevents in particular special corrosion of the metallic parts or even one electrical leakage current resulting from penetrating moisture.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999100632 DE19900632A1 (en) | 1999-01-11 | 1999-01-11 | Making heat-resistant plastic products from melt adhesive, including electrical components, is achieved by e.g. molding with cross-linking using peroxides and radiation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999100632 DE19900632A1 (en) | 1999-01-11 | 1999-01-11 | Making heat-resistant plastic products from melt adhesive, including electrical components, is achieved by e.g. molding with cross-linking using peroxides and radiation |
Publications (1)
Publication Number | Publication Date |
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DE19900632A1 true DE19900632A1 (en) | 2000-07-13 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE1999100632 Ceased DE19900632A1 (en) | 1999-01-11 | 1999-01-11 | Making heat-resistant plastic products from melt adhesive, including electrical components, is achieved by e.g. molding with cross-linking using peroxides and radiation |
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DE (1) | DE19900632A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1123792A1 (en) * | 2000-02-11 | 2001-08-16 | Vip -Virant D.O.O. | Electric and/or electronic component encapsulated by an overmoulding shaped by injection and method for producing |
DE10336189A1 (en) * | 2003-08-07 | 2005-03-10 | Daimler Chrysler Ag | Connection between two components and associated connection method |
EP1967346A1 (en) * | 2007-03-06 | 2008-09-10 | Nordson Corporation | Method for manufacturing a packaging comprising an adhesive coating |
EP2826613A4 (en) * | 2012-03-12 | 2015-11-11 | Omron Tateisi Electronics Co | Metal insert-molded article having sealability, electronic component having sealability and provided with said metal insert-molded article, and method for producing metal insert-molded article having sealability |
DE102017115201A1 (en) * | 2017-07-07 | 2018-07-19 | Schaeffler Technologies AG & Co. KG | Hot melt adhesive and method of applying a hot melt adhesive to a surface of an electronic component |
-
1999
- 1999-01-11 DE DE1999100632 patent/DE19900632A1/en not_active Ceased
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1123792A1 (en) * | 2000-02-11 | 2001-08-16 | Vip -Virant D.O.O. | Electric and/or electronic component encapsulated by an overmoulding shaped by injection and method for producing |
DE10336189A1 (en) * | 2003-08-07 | 2005-03-10 | Daimler Chrysler Ag | Connection between two components and associated connection method |
EP1967346A1 (en) * | 2007-03-06 | 2008-09-10 | Nordson Corporation | Method for manufacturing a packaging comprising an adhesive coating |
EP2826613A4 (en) * | 2012-03-12 | 2015-11-11 | Omron Tateisi Electronics Co | Metal insert-molded article having sealability, electronic component having sealability and provided with said metal insert-molded article, and method for producing metal insert-molded article having sealability |
US9452555B2 (en) | 2012-03-12 | 2016-09-27 | Omron Corporation | Metal insert-molded article, a method for producing the same, and an electronic component |
DE102017115201A1 (en) * | 2017-07-07 | 2018-07-19 | Schaeffler Technologies AG & Co. KG | Hot melt adhesive and method of applying a hot melt adhesive to a surface of an electronic component |
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