DE102007049195A1 - Identification part e.g. emblem, manufacturing method, for motor vehicle, involves applying adhesive at rear side of foil or board, where foil or board is inserted into injection molding tool and molded to base body - Google Patents

Abstract

The method involves forming an identification part e.g. emblem, from thermoplastics, where a visible side of the identification part is partially covered with a foil i.e. aluminum foil, or board (2) from a material, which is stable with injection molding temperature. An adhesive (3) is applied at a rear side of the foil or board, where the foil or board is inserted into an injection molding tool and molded to a base body (1) that is made of the thermoplastics. The foil or board is made of melamine resin.

Description

The Invention relates to a method for producing an emblem, a badge or the like identification part, in particular for motor vehicles, wherein the identification part of urinformigem plastic injection molded and the visible side of the identification part at least partially is covered with a foil or board made of a material which in conventional Injection molding temperatures is stable.

It is known, corresponding identification parts as plastic injection molded part to manufacture, with the plastic injection molded part in the visible surface as well Contours, so surveys or depressions may have. The Plastic injection part is then then chromed at least on the visible surface and optionally printed. It is also known, a corresponding Identification part in the way to manufacture a base part is injected from plastic. This base part can, for example coated with a metal galvanically or by other means become. Further, a film, for example, an aluminum foil manufactured, the embossed structures, pictorial and / or brand-like markings and / or imprinted Has structures. This foil will be on the front of the base permanently applied. The connection between the base part and the film is achieved by gluing, for example by means of a Hot glue. additionally is the film, especially for the protection of screen-printed inks or the like, provided with a protective coating. To corrosion to avoid the edges of the aluminum foil and the entry of To prevent dirt or dust, the aluminum foil after the Glueing on the base part still provided with a protective coating on the edge. The so-made part can, for example, as a brand emblem on the Front, at the rear or on the side walls of an automobile body be attached. The previous production and the previous structure Such identification parts is very complicated, so that the production is expensive. In addition, you can through the diverse necessary manufacturing steps errors occur, resulting in a deficient Lead end product. It is also known, a corresponding film, the embossed or printed is to insert in the moving side of an injection mold. to Shaping of the base part then becomes appropriate plastic material sprayed behind the inserted foil and the film also on the Encased edges. As a result, the edge of the film through the Plastic compound protected and the film permanently connected to the base part. In such a Procedure, it is not necessary to apply hot glue or subsequently one Edge protection for to provide the film.

Especially then, if especially thin film is used, is the cohesion between the base part and the film only by the encapsulation of the marginal edges of the film unsatisfactory. For complicated parts, where, for example Grating structures or the like are formed in the visible surface, which is Production very complicated, because in each case the marginal edges of cutouts of Film must also be covered with plastic material.

outgoing From this prior art, the invention is based on the object a method of the generic kind to disposal to put it in a particularly easy and cost effective way allowed, a corresponding foil or board with a plastic to connect existing base part.

to solution this task strikes the invention that on the film or the back of the board a primer is applied, the so prepared foil or Board inserted in an injection mold and subsequently to those equipped with the primer back Plastic is sprayed on.

According to this Procedure is on the slide or board back, So on the side, later is covered by the plastic mass of the base part, a bonding agent applied. The prepared film or board is in a injection mold inserted and subsequently plastic in the cavity of the tool injected, so that the plastic compound with the adhesion promoter equipped back the film or board covered. By the bonding agent will be an excellent adhesion between the Plastic compound and made of other material film or board reached. A rework is not required but the part is ready to use.

Preferably It is intended that the back of the film or the board Melamine resin is applied.

melamine resin has proven itself as a bonding agent outstanding.

moreover it is provided that the adhesion promoter, in particular the melamine resin, is laminated.

In this procedure, it is very easy to the bonding agent the backside to apply the foil or board.

Prefers is also provided that the adhesion promoter by the temperature the applied injection molding compound is activated.

at In the manufacture of the emblem, the adhesion promoter becomes due to the temperature the applied injection molding compound activated, creating an intimate adhesion between the board or Slide and the plastic mass is achieved.

Especially It is also provided that the plastic material applied in such a way It will also cover the edges of the film or board.

By The corresponding order of the plastic compound will also be the edges the foil or circuit board is covered by plastic compound, leaving the edges against environmental influences protected are.

A Particularly advantageous development is seen in that the Sheet or board punched out to form visible structures is, for. B. in lattice form, then or before stamping adhesion promoter is applied and then the film or board only in the area formed by the punching Contours with plastic is injected behind or injected in total becomes.

in this connection the film or board is first punched, so that desired Structures are created, such as lattice forms, brand-like Markings or the like. Preferably, then, adhesion promoter applied and then the foil or circuit board is placed in an injection mold and the Foil or board back-molded with plastic. As desired of the customer, the film or board can only in the field of the punched outlines are back-molded with plastic, so that a total of an open emblem or the like is formed. Alternatively, the entire foil or circuit board can be back-injected so that a closed emblem is created. In any case is the secure adhesion and connection between foil or circuit board and plastic compound ensured.

A alternative procedure is seen in that a molded part a mold with a contoured surface is generated on the wall of this molding a foil or board is applied, the mold is closed and injection molding compound is injected into the cavity of the mold, so that the film or board with their visible on the finished product Side pressed by the spray mass against the contoured surface is and the board or foil according to the contour permanently deformed becomes.

According to this Procedure, the corresponding molding of the mold, to which the film or board is applied has a contoured surface, For example, the surveys and depressions to produce a has a certain appearance. The circuit board or foil will on this area of the mold hung up and the mold closed. As soon as injection molding material is then injected into the cavity of the casting mold not just the back will be the foil or board with plastic back-injected, but by the pressure of the spray mass is the foil or circuit board against the contoured surface the mold pressed and the board or foil according to the contour remaining deformed, in particular embossed. According to this procedure So can on a separate contouring of the film or board be omitted, since the corresponding contouring during the Injection process takes place in a single step.

In addition, can be provided that the film or board on the visible side after removal from the injection mold is printed.

Also can be provided that the film or board before inserting in the injection mold coated with a protective varnish on the visible side.

Provided provide the foil or circuit board with a protective varnish before spraying If the protective lacquer coating should be designed such that they are stable up to temperatures corresponding to the spray temperature.

When Material for The film or board may be metallic material, for example Be provided aluminum or stainless steel. Also a training of Foil or board made of laminated material is possible. Preferably, the corresponding board or foil has a thickness of about 0.25 mm. The back-injected plastic material has a material thickness of about 1.8 mm, so that the total thickness of the finished emblem or the like is about 2 mm. The contouring that may be generated during the injection process, Elevations and / or depressions of the film or board should have a maximum depth of about 2 mm, so that the material of the film or Do not tear the board during injection molding with plastic compound.

By the corresponding procedure, in particular when generating a contoured foil or plate, an exact mapping of the contours is achieved and it is ensured that the contours are completely behind with the back Plastic mass are backfilled.

When Plastic for the back-injection of the film or board is preferably thermoplastic material used.

The invention further relates to an identification part, in particular for motor vehicles, consisting of a basic body of thermo plastic plastic and a visible side at least partially forming board or foil made of metal or other material.

to solution The object described above is proposed that provided between the board or film and the body an adhesion promoter is.

Prefers it is provided that the bonding agent is a melamine resin.

Of Furthermore, it is preferably provided that the plastic mass of thermoplastic plastic covers the edges of the film or board.

A alternative development is seen in that the film or Board is formed grid-like with webs and clearances.

in this connection can be provided that the main body only in the area of the webs the film or board is formed.

alternative can be provided that the main body in the entire range of Foil or board, ie both in the area of the webs as well as in the area the open spaces is trained.

A alternative development is seen in that the film or Board has elevations, depressions or the like contours, where the main body with its mass filling the contours is trained.

moreover can be provided that the film or board on the visible side is printed.

Prefers is also provided that the film or board on the visible side provided with a protective varnish.

Also it can be provided that the identification part according to the method according to one of claims 1 to 9 is made.

embodiments The invention are illustrated in the drawing and in the following described in more detail.

It shows:

The sequence of figures 1 to 5 a first embodiment;

the sequence of figures 6 to 9 a second embodiment and, alternatively, the 10 to 12 another embodiment.

Based the embodiments Below, the procedure for producing such Emblems clarified.

The production of an emblem, a badge or a marking part, which is preferably intended for motor vehicles, is as follows. The marking part becomes a base body 1 made of injection-moldable plastic, such as thermoplastic, urgeformt. The visible side of the identification part is at least partially of a foil or circuit board 2 covered. The foil or circuit board 2 can for example consist of aluminum, stainless steel or composite materials. According to the invention, the film or circuit board 2 a bonding agent 3 applied. The prepared foil or circuit board 2 is placed in an injection mold and then on the with the bonding agent 3 equipped rear plastic compound sprayed. This plastic compound forms the base body 1 the emblem or the like. As a bonding agent 3 is preferably on the foil or circuit board 2 applied melamine resin on the back, wherein the order is preferably carried out in the form of a lamination. Preferably, an adhesion promoter 3 used, which is activated at the injection molding temperature. It is thus achieved excellent adhesion between the plastic material and the film. In particular, it is provided that the plastic material 1 is applied so that the edges of the film or board are covered, as in 4 for example in 5 is shown.

In the embodiments according to 6 to 12 will the foil or circuit board 2 punched out to form visible structures, so that virtually creates a stamped grid, as for example in 6 is shown. On the prepared board 2 will be on the back adhesion agent 3 applied. Subsequently, the foil or circuit board 2 either only in the area of the contours formed by the punching with plastic compound 1 injected in, as in 8th and 9 is clear. Thus, an open emblem is generated, which in the area, at 5 is indicated, is open. Alternatively, also the foil or circuit board 2 be back-injected in total by a closed plastic part, so that the plastic mass 1 forms a closed back, on which the front side in the region of webs or the like, the structured film or board is applied. The at 6 specified areas are closed by plastic compound, these areas preferably with respect to those with foil 2 covered areas lie behind. In the embodiment according to 1 to 5 is provided that the foil or circuit board 2 is placed on a contoured surface of a mold. If the mold is then closed and injection molding material is injected into the cavity of the mold, the film or board is 2 according to the contouring the shape is deformed or embossed because of the foil or circuit board 2 is pressed with its visible on the finished product side by the spray mass against the contoured surface. It thus creates a part, which on its surface, by the board or foil 2 is formed, contoured, the plastic mass 1 this part completely covered on the back. Areas with corresponding contours 7 are in 3 indicated and in the sectional view according to 4 seen. Also the enlarged representation of 5 shows such contours 7 ,

The foil or circuit board 2 can be printed on the visible side after removal from the injection mold, so that in the area 8th For example, prints are provided. The printing can take place in the form of a pad printing.

Preferably, the film or board 2 before spraying with a protective varnish 9 coated on the visible side.

The invention thus provides an identification part which has a main body 1 made of thermoplastic material and has a visible side through a board or foil 2 is formed, wherein the good connection of the plastic compound with the board or foil 2 a bonding agent 3 Applied to the back of the film or circuit board.

In 1 is a corresponding board 2 shown in plan view, wherein it is a circuit board in the embodiment 2 made of sheet metal with a thickness of at least 0.25 mm. In 2 Such a board is shown in side view, wherein the underside of the board 2 coated with primer and the top of the board 2 with a protective varnish 9 is provided.

In 3 a corresponding finished part is shown, in which case the film or board 2 with plastic compound 1 is injected behind. In 4 is a corresponding section IV-IV of 3 shown. In 5 is an enlargement of the detail VV the 3 shown.

6 again shows a board or foil 2 in plan view, which is punched like a lattice, wherein the board or foil 2 a circumferential flat edge region and the edge region connecting web or similar contours may have.

In the 7 is the foil or circuit board 2 shown in side view, in turn, the bottom with a bonding agent 3 and the top with a protective varnish 9 is provided.

In 8th an embodiment is shown in which the film or board 2 with plastic compound 1 is back injected, and only in the area of the remaining structures of the film or board 2 , The intervening areas 5 are openly trained.

In 10 and 11 is at a same board 2 a back injection with plastic compound 1 made in such a way that even between the webs of the board 2 remaining free space of plastic material 1 are back injected, so that a total of a closed emblem is generated. In the area of the webs of the board 2 lies the plastic mass 1 behind the front of the board back. This is in particular from the sectional view according to 11 seen. Also in the detail according to 12 It can be seen that the marginal edges of the film or board 2 through the plastic mass 1 are protected.

The Invention is not on the embodiment limited, but in the context of the Revelation often variable.

All new individual items disclosed in the description and / or drawing. and combination features are considered essential to the invention.

Claims (19)

Method for producing an emblem, a badge or the like marking part, in particular for motor vehicles, the marking part being made of injection-moldable plastic ( 1 ) is formed and the visible side of the marking part at least partially with a foil or board ( 2 ) is covered by a material which is stable at normal injection molding temperatures, characterized in that on the film or the board ( 2 ) on the back a bonding agent ( 3 ), the so prepared foil or circuit board ( 2 ) is inserted into an injection mold and subsequently to the with the bonding agent ( 3 ) equipped back plastic ( 1 ) is sprayed on. A method according to claim 1, characterized in that on the film or the board ( 2 ) is applied on the back melamine resin. Method according to claim 1 or 2, characterized in that the adhesion promoter ( 3 ), in particular the melamine resin, is laminated. Method according to one of claims 1 to 3, characterized in that the adhesion promoter ( 3 ) is activated by the temperature of the applied Spritzgießmasse. Method according to one of claims 1 to 4, characterized in that the plastic material ( 1 ) is applied in such a way that the edges ( 4 ) the foil or board ( 2 ) are covered. Method according to one of claims 1 to 5, characterized in that the film or board ( 2 ) is punched out to form visible structures, z. B. in lattice form, then or before stamping adhesion promoter ( 3 ) is applied and then the film or board ( 2 ) only in the area of the contours formed by the punching with plastic ( 1 ) is back-injected or injected in total. Method according to one of claims 1 to 5, characterized in that a molded part of a casting mold is produced with a contoured surface, on the wall of this molding a film or board ( 2 ) is applied, the mold is closed and sprayed mass ( 1 ) is injected into the cavity of the mold, so that the film or circuit board ( 2 ) with its side visible on the finished product by the injection molding compound ( 1 ) is pressed against the contoured surface and the board or foil ( 2 ) is permanently deformed according to the contour. Method according to one of claims 1 to 7, characterized in that the film or board ( 2 ) is printed on the visible side after removal from the injection mold. Method according to one of claims 1 to 8, characterized in that the film or board ( 2 ) before being placed in the injection mold with a protective varnish ( 9 ) is coated on the visible side. Identification part, in particular for motor vehicles, consisting of a base body made of thermoplastic material ( 1 ) and a visible side of the at least partially forming board or foil ( 2 ) of metal or other material, characterized in that between the board or foil ( 2 ) and the basic body ( 1 ) a bonding agent ( 3 ) is provided. Identification part according to claim 10, characterized in that the adhesion promoter ( 3 ) is a melamine resin. Identification part according to claim 10 or 11, characterized in that the plastic material ( 1 ) of the thermoplastic plastic the marginal edges ( 4 ) of the film or board ( 2 ) covers. Marking part according to claim 10 to 12, characterized in that the film or board ( 2 ) is formed like a grid with webs and clearances. Identification part according to claim 13, characterized in that the basic body ( 1 ) only in the region of the webs of the film or board ( 2 ) is trained. Identification part according to claim 13, characterized in that the basic body ( 1 ) in the entire area of the film or circuit board ( 2 ), ie both in the area of the webs and in the area of the free spaces ( 6 ) is trained. Identification part according to one of claims 10 to 15, characterized in that the film or circuit board ( 2 ) Elevations, depressions or similar contours ( 7 ), wherein the basic body ( 1 ) with its mass the contours ( 7 ) is formed filling. Identification part according to one of claims 10 to 16, characterized in that the film or circuit board ( 2 ) is printed on the visible side. Identification part according to one of claims 10 to 17, characterized in that the film or circuit board ( 2 ) on the visible side with a protective varnish ( 9 ) is provided. Identification part according to one of claims 10 to 17, characterized in that the identification part after the Method according to one the claims 1 to 9 is made.