Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • 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
  • B29C45/14467—Joining articles or parts of a single article
• • 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
  • B29C45/14467—Joining articles or parts of a single article
  • B29C45/14508—Joining juxtaposed sheet-like articles, e.g. for making trim panels
• • 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
  • B29C45/14778—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 the article consisting of a material with particular properties, e.g. porous, brittle
• • 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
  • B29C45/14778—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 the article consisting of a material with particular properties, e.g. porous, brittle
  • B29C45/14811—Multilayered articles
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F23/00—Advertising on or in specific articles, e.g. ashtrays, letter-boxes
  • G09F23/0058—Advertising on or in specific articles, e.g. ashtrays, letter-boxes on electrical household appliances, e.g. on a dishwasher, a washing machine or a refrigerator
• • 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
  • B29C45/14467—Joining articles or parts of a single article
  • B29C2045/14532—Joining articles or parts of a single article injecting between two sheets
• • 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
  • B29C45/14836—Preventing damage of inserts during injection, e.g. collapse of hollow inserts, breakage
  • B29C2045/14844—Layers protecting the insert from injected material
• • 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
  • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
  • B29K2101/12—Thermoplastic materials
• • 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
  • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
  • B29L2031/3475—Displays, monitors, TV-sets, computer screens

Definitions

• the invention relates to a plastic molding and a method for its
• Nail polish remover and the like to be resistant and also withstand mechanical stresses as far as possible without scratching. Likewise, high optical demands are made on the surfaces of such moldings, the surface should therefore look visually high quality and / or attractive.
• Such a method for producing a plastic molded part comprises the steps:
• Form plastic molding wherein the first decorative film on a first wall of the cavity and the second decorative film on a second, the first
• a plastic molded part which comprises a first decorative film, which at least partially has an opaque coating, in which a decor is introduced, and which comprises a second decorative film, wherein the first decorative film has a first surface and the second decorative film second, the first surface opposite surface of the
• step b) the introduction of the at least one decorative element of a decoration into the first decorative film can be effected in particular by laser radiation and / or by milling and / or punching.
• the machining tool is therefore preferably a laser, a milling tool and / or a punching tool.
• the two decorative films preferably form a protection for both surfaces of the plastic molded part, so that it is particularly resistant. It can therefore be based on a wet coating of the plastic molding after curing
• Plastic are dispensed so that immediately the finished part is obtained.
• the first decorative film forms in the assembled state of the plastic molded part
• the decoration which is preferably later backlit, preferably by laser irradiation, milling or punching, is of high quality.
• complementary patterns that complement each other, for example, when viewing and / or backlighting to a total design or overall decor and / or when viewed from different angles result in a visually variable effect.
• the achievable tolerances are in the range of + 1- 0.1 mm when introducing the design, while in alternative methods, for example the use of pre-punched transfer foils for small parts only tolerances of +/- 0.2 mm and for larger parts of only + / - 1 mm can be reached.
• the laser irradiation, milling or punching is also not tied to fixed designs. For example, it is possible to manufacture individualized designs or highly flexible small series without additional effort.
• Milling head is controlled electronically, with control signals, the position of the laser beam, milling head or the punching blade on the surface of the
• control molding The control signals may be part specific, i. be modified for each individual molding or for a certain number of moldings.
• a punching knife or punch is particularly advantageous if you want to bring in larger decors or decorative elements and this would take too long to be introduced with a fine-structuring tool such as a laser beam or milling head. Equally useful is the use of a punching knife or
• the decoration and / or the at least one decorative element after the back molding by laser irradiation, milling or punching in the first decorative sheet brought in.
• the decor and / or the at least one decorative element may be introduced into the first decorative film by laser irradiation, milling or punching before the back molding, in particular before the first decorative film is inserted into the injection mold.
• the opaque coating in the area machined with the machining tool is at least partially removed and / or the opacity of the opaque coating processed in the machining tool Area reduced.
• Coating where it is hit by the laser beam, heated and evaporated and thereby removed.
• the material of the opaque coating is mechanically removed.
• materials are suitable such as opaque color coat layers with a high
• Pigmentation for example, carbon black pigments, for example from pigments in a polymeric, usually transparent binder, wherein the proportion and type of Pigments determines the opacity of the paint, metal layers of aluminum, chromium or copper or the like.
• a metal layer of vapor-deposited and thereby cluster-forming tin as non-conductive metal layer is also possible.
• NCVM layers Non-Conductive Vacuum Metallization
• Materials which change their optical properties during laser irradiation, in particular their opacity or transparency, can be used as material for the opaque
• Coating can be used.
• an Nd: YAG laser is used for the laser irradiation, which in particular emits light in the infrared range.
• Laser beam depends on the type and thickness of the opaque coating as well as the speed with which the opaque coating is to be removed.
• the pigmentation of the color coat layer is selected so that a pigmentation number PZ in the range of 1, 5 cm 3 / g to 120 cm 3 / g, in particular in the range of 5 cm 3 / g to 120 cm 3 / g , lies, whereby the
• ITIBM constant; Mass of a binder in the lake layer in g,
• ⁇ Z oil number of a pigment (according to DIN 53199),
• x variable in running, corresponding to the number of different pigments in the colored lacquer layer.
• the transmission ⁇ i. the transmittance of the opaque coating, is determined in particular with a spectrophotometer, for example of the Hitachi U-2000 type, preferably in a
• Wavelength range between 360 nm and 700 nm is measured.
• the region machined with the machining tool and the region not machined with the machining tool preferably have such a difference in transparency that they can be seen by a human observer without the aid of transmitted light is.
• the difference in transparency is in particular at least 5%, preferably at least 10% to 75%. This ensures that there is sufficient contrast in the décor to create a sharp and recognizable décor.
• the opaque coating is formed by printing, in particular
• the pressure can be full or partial. It is also possible to perform several printing operations in succession to achieve the desired degree of coverage or the desired opacity. In this case, additional layers, such as, for example, transparent or translucent layers, protective lacquers or the like, can also be printed over the entire surface or partially.
• the opaque coating can be applied by means of a transfer film. Again, a full or partial order can be made.
• a transfer film usually comprises a carrier layer, an optional release layer, and as transfer layer one or more decorative layers, which may have different degrees of opacity, and / or an adhesive layer. The carrier layer is removed after application of the transfer film, the transfer layer remaining with the remaining layers on the decorative sheet. The opaque coating is then formed by at least one of the decorative layers and consists of the materials already mentioned.
• the opaque coating preferably has a transparency in the wavelength range visible to humans of less than 50%, in particular less than 20%, preferably less than 5%, prior to introduction of the decoration. This provides a dark background that provides good contrast for later backlighting.
• the transparency has transparency in the visible wavelength range of more than 50%, in particular more than 75%. This allows a well-recognizable backlighting effect.
• the transparency can also be at
• the opaque coating has a layer thickness of less than 100 ⁇ , in particular in a layer thickness between 5 ⁇ and 50 ⁇ on. On the one hand this ensures the required opacity and on the other hand it ensures the production of a thin and optionally flexible plastic molded part.
• the first decorative film has at least one further at least partial coating, in particular a transparent or translucent colored coating, a protective lacquer coating and / or an adhesive coating.
• Such coatings can be applied as described above by printing or by means of a transfer film. Also combinations of these techniques are possible. As a result, additional visual effects can be realized or additional functions can be integrated into the decorative film.
• the decor and / or the at least one decorative element is or comprises a logo, a symbol and / or at least one alphanumeric character. These elements can also be used with abstract graphic design elements
• the decor may have a purely decorating function, but preferably also be functional and, for example, mark display or operating elements of a device, such as status indicators, control surfaces or the like.
• At least one further decorative element is introduced by punching into the first decorative film. This allows large recesses for
• the first decorative film is provided as a sheet and inserted into a thermoforming tool, which has the desired final contour.
• heat preferably a temperature of 80 ° C to 200 ° C
• the decorative film is made deformable.
• Adjusted thermoforming tool and thus brought into the desired final contour.
• the material of the first decorative film then hardens again, so that it retains the final contour.
• a mechanical post-processing may optionally be carried out, for example by trimming (mechanically or by means of a laser), milling, punching or the like.
• the first decorative film in this case has a thickness of 50 ⁇ to 2000 ⁇ on. On the one hand, this ensures good mechanical stability and, on the other hand, allows problem-free forming.
• the first decorative film has at least one layer of a colorless or colored transparent or translucent thermoplastic material, in particular ABS, ABS / PC, PC / ABS, PC, PP or PMMA.
• a colorless or colored transparent or translucent thermoplastic material in particular ABS, ABS / PC, PC / ABS, PC, PP or PMMA.
• This serves as a carrier for the opaque coating and any other layers, but can itself be backlit. Due to the thermoplastic nature of the materials mentioned a problem-free deformation is possible.
• the introduced at least one decorative element and / or decor has at least one line with a line thickness of at least 50 ⁇ , in particular of min. 0.5 mm.
• These lines can be part of the be above decorative elements or can form these, so for example, form letters, symbols or logos.
• Line weight is determined by the resolution and perception of the eye. Due to the backlighting even extremely fine lines are still recognizable. The maximum line weight or the maximum extent of the
• the second decorative film prefferably has a carrier layer, an optional release layer and at least one decorative layer which can be detached therefrom, and for the carrier layer to be pulled off the decorative layer after the back molding. It is therefore a transfer film, as they are already based on the
• the carrier layer can remain until the installation of the plastic molded part on the plastic molding and thus additionally protect the surface during handling.
• the second decorative sheet may be similar to the first decorative sheet
• the second decorative film preferably has at least one layer of a colorless or colored transparent or translucent
• thermoplastic material in particular of ABS, ABS / PC, PC / ABS, PC, PP or PMMA. This serves as a carrier for the decorative layer of the second decorative film.
• the second decorative film is provided as a sheet and inserted into a thermoforming tool, which has the desired final contour.
• heat preferably a temperature of 80 ° C to 200 ° C
• the decorative film is made deformable.
• Adjusted thermoforming tool and thus brought into the desired final contour.
• the material of the second decorative film then hardens again, so that it retains the final contour.
• the decorative layer of the second decorative film preferably comprises at least one
• the protective lacquer layer can be colorless or colored translucent or transparent or have opaque areas. In particular, it is preferred if the decorative layer forms another decor, which with the at least one decorative element and / or decor of the first decorative film
• a tactile surface relief is molded into the surface of the second decorative film facing away from the plastic mass, in particular due to a
• Pattern layer which is arranged between the wall of the cavity and a carrier foil of the second decorative foil or the second decorative foil.
• the tactile structure thus forms during injection molding when the second decorative film is plastically deformable due to the heat and pressure of the injected plastic compound.
• the pattern layer can be directly from the wall of the Cavity be formed or preferably by a separate insert, in particular by the carrier film itself, are provided.
• the second decorative film is at least partially transparent or translucent and in particular has a transparency of 5% to 100%.
• the backlit at least one decorative element and / or decor of the first decorative film can also be easily seen from the side of the second decorative film.
• the decorative films are inserted into the injection mold at a distance of 0.5 mm to 10 mm, preferably from 0.8 mm to 5 mm. This distance determines the wall thickness of the finished plastic molding.
• At least one core is introduced into the injection mold between the decorative films.
• cavities or recesses can be introduced into the plastic molded part, which for receiving
• the core is preferably introduced by a punched-out in the first decorative film in the space between the decorative films.
• At least one functional element in particular a backlighting device and / or a touch sensor, to be attached, in particular glued or laminated, to the side of the plastic molded part formed by the first decorative film after backmolding.
• the functional element may additionally or alternatively comprise electrical leads and / or electrical / electronic components.
• the first and / or second decorative film itself may also preferably one or more have electrical functional layers, which in particular a
• Backlight device or one or more touch sensors
• Operating device display element or the like can find.
• the cast-molding composition is preferably transparent or translucent, in particular with a transparency of 5% to 98%, preferably one of the following
• ABS acrylonitrile-butadiene-styrene copolymer
• PC polycarbonate
• ABS / PC polycarbonate
• PC / ABS PC / ABS
• PMMA polymethyl methacrylate
• PP polypropylene
• injection molding is suitable at preferred temperatures of 200 ° C to 300 ° C.
• the required injection pressure is particularly dependent on part size, part geometry and wall thickness and can vary within a wide range.
• the contrast in the first decorative film by a variation of the transparency of the second decorative film and / or the Spzzgussmasse and / or the contrast (difference of transparency) in the first decorative film very different optical effects can be generated.
• the contrast in the first decorative film by a
• FIG. 1 shows a schematic sectional illustration through an exemplary embodiment of a plastic molding with a front and a back decorative foil;
• FIG. 2 is a schematic view of a decorative film for a plastic molded part according to FIG.
• Fig. 3 is a schematic sectional view through an injection molding tool in the open state; 4 shows a schematic sectional view through the injection molding tool according to FIG. 3 in the closed state;
• Fig. 5 is a schematic representation of various design variants of a
• a plastic molded part 1 in particular for an operating or display surface of a device, comprises a first decorative film 11, a second decorative film 12 and a
• the first decorative sheet 11 forms in a later installation position of the plastic molded part 1 whose back, the second
• Decorative film 12 whose, facing a user, front.
• the first decorative film 11 has a multilayer structure and comprises at least one carrier layer 111 and an opaque coating 112.
• the carrier layer 111 preferably has a layer thickness of 50 ⁇ to 2000 ⁇ , in particular from 100 ⁇ to 1000 ⁇ and consists of a transparent or translucent
• thermoplastic in particular of ABS, ABS / PC, PC / ABS, PC, PP or PMMA, PA, TPU.
• the opaque coating 122 consists of an opaque lacquer, for example one or more opaque lacquer layers with a high proportion of pigments, for example carbon black pigments, and / or of a metal such as aluminum or copper or the like.
• the opaque coating 122 may preferably be applied by printing, in particular screen printing or gravure printing. The pressure can be full or partial. It is also possible to perform several printing operations in succession to achieve the desired degree of coverage or the desired opacity. There may also be additional layers 113, such as color transparent or translucent layers, protective lacquers or the like, are printed over the entire surface or partially.
• the opaque coating 112 may be applied by means of a transfer film.
• a transfer film usually comprises a carrier layer, an optional release layer, and a transfer layer detachable therefrom with one or more decorative layers 113, which can have different degrees of coverage, and / or an adhesive layer.
• the carrier layer is removed after the application of the transfer layer to the decorative film 11, wherein the remaining layers 112, 113 remain on the decorative sheet 11.
• the opaque coating 112 can be precisely removed from the decorative sheet 11 so as to introduce backlit symbols or other decorative elements.
• An example of such a decor is shown in FIG. In this case, the material of the opaque coating 112 in the
• Areas 112a where it is hit by the laser beam, heated and evaporated and thereby removed.
• the material of the opaque coating 112 is mechanically removed in the regions 112a.
• Materials which change their optical properties, in particular their opacity or transparency, in the case of laser irradiation for example special bleachable pigments or pigments which show a color change by means of suitable laser radiation, can also be used.
• an Nd: YAG laser is used for the laser irradiation, which in particular emits light in the infrared range.
• the required intensity of the laser beam depends on the type and thickness of the opaque coating as well as the speed with which the opaque coating is to be removed.
• the machined with the machining tool areas 112a preferably form lines with a line thickness of at least 50 ⁇ , in particular of mind. 0.5 mm, the decorative elements such as letters, numbers, symbols or logos form.
• the minimum line weight is due to the resolution and
• the portions 112a machined with the machining tool and the portions 112b not machined with the machining tool have a difference in FIG.
• Having transparency in the visible wavelength range for humans preferably less than 50%, in particular less than 20%, preferably less than 5%. This provides a dark background that provides good contrast for later backlighting.
• the opaque coating 112 in the region 112a machined with the processing tool has a transparency in the human-visible wavelength range of more than 50%, in particular more than 75%. This allows a well-recognizable backlighting effect. The transparency can also be seen in different for the human Wavelengths be different, so that there is a colored backlighting.
• the opaque coating 112 preferably has a layer thickness of less than 100 ⁇ , in particular in a layer thickness between 5 ⁇ and 50 ⁇ . On the one hand this ensures the required opacity and on the other hand it ensures the production of a thin and optionally flexible plastic molded part.
• the first decorative film 11 preferably has a layer thickness of 50 ⁇ to 2000 ⁇ .
• At the back of the first decorative sheet 11 may be attached 114 further functional elements. This can be in particular a
• Backlight device or one or more touch sensors
• the decorative film 11 itself may also have one or more electrical functional layers, which
• a backlight device in particular a backlight device or one or more
• Touch sensors in particular capacitive touch sensors.
• the second decorative film 12 in the embodiment as a transfer film comprises a
• Carrier layer 121 an optional release layer and at least one decorative layer 122, 123.
• the carrier layer 121 is removed after the application of the second decorative sheet 12 of the decorative layer 122, 123. Carrier layer 121 and release layer are therefore no longer present in the finished component. However, the carrier layer 121 can also, as shown in Fig. 1, until the installation of the plastic molded part 1 on the
• Plastic molding 1 remain and so additionally protect the surface during handling.
• the support layer 121 is preferably made of PET (polyethylene terephthalate) or PMMA, PC and has a layer thickness of 6 ⁇ to 50 ⁇
• the carrier layer 121 of the second decorative film 12 has a layer thickness of preferably 50 ⁇ to 2000 ⁇ , in particular from 100 ⁇ to 1000 ⁇ and consists of a transparent or translucent thermoplastic material, in particular ABS, ABS / PC, PC / ABS, PC, PP or PMMA, PA, TPU.
• the carrier layer 121 has no release layer and serves as carrier for the decorative layer 122, 123.
• the at least one decorative layer 122, 123 comprises at least one high-gloss or matt and / or with a tactile structure, for example a brushed one
• Protective varnish layer 122 may be colorless or colored, translucent or transparent or may also have opaque areas.
• the protective lacquer of the protective lacquer layer 122 is preferably one
• radiation-cured paint such as a physically drying
• Binder systems based on polyacrylic and PU resins which can be final cured after completion of the plastic molding 1. This is preferably done by irradiation at a wavelength of 200 nm to 400 nm.
• the second decorative film 12 is at least partially transparent or translucent and in particular has a transparency of 20% to 100%.
• the backlit at least one decorative element and / or decor of the first decorative sheet 11 can also be seen well from the side of the second decorative sheet 12 ago.
• the layer thickness of the second decorative sheet 12 in the embodiment as Transfer film preferably about 10 ⁇ to 100 ⁇ , wherein the decorative layers 122, 123 preferably each have a layer thickness of 1 ⁇ to 50 ⁇ .
• the entire layer thickness of the second decorative film 12 is preferably about 50 ⁇ to 2000 ⁇ , wherein the decorative layers 122, 123 each have a layer thickness of 1 ⁇ to 50 ⁇ .
• the decorative layer 122, 123 forms a further decor, which interacts with the decor of the first decorative sheet 11.
• the two decorative films 11, 12 have respective patterns that show in the superposition of the desired final decor. It is also possible to utilize the spacing between the decorative films 11, 12 in order to create an optically variable design, for example by means of parallax effects.
• the main body 13 is preferably made of a transparent or translucent thermoplastic, preferably acrylonitrile-butadiene-styrene copolymer (ABS), polycarbonate (PC), polypropylene (PP), polymethylmethacrylate (PMMA) or a mixture of polycarbonate and acrylonitrile-butadiene-styrene -Copolimerisat (PC / ABS) trained.
• ABS acrylonitrile-butadiene-styrene copolymer
• PC polycarbonate
• PP polypropylene
• PMMA polymethylmethacrylate
• the transparency of the base body 13 is preferably from 5% to 98%.
• the layer thickness of the base body 13 is preferably 0.5 mm to 10 mm, preferably from 0.8 mm to 5 mm.
• cavities or recesses may also be introduced, in the other functional elements, such as displays or sensors, can be integrated.
• FIG. 3 shows a schematic sectional view of an injection molding apparatus 2, which has a first mold half 21 and a second mold half 22.
• the first Tool half 21 is designed to be movable relative to the frame-fixed second tool half 22.
• Both tool halves have molding surfaces 21 f and 22 f, which form a cavity 23.
• the molding surface 21 f has a negative curvature in regions, that is to say a concave configuration.
• the molding surface 22f has a positive curvature in regions, that is to say a convex formation.
• the second decorative sheet 12 is inserted in the first mold half 12.
• the first decorative sheet is inserted in the core-side mold half 11.
• Decorative film 12 is in this embodiment as a transfer film and thereby as
• Endless material provided and can be performed with a film feeding device (not shown) through the injection molding device 2.
• Film feed device can be a supply roll for the second decorative film 12, a take-up roll for the remaining film, that is, for the possibly detached support layer 121 and remaining on the support layer 121 remains of the decorative layer, a
• Transport device for the stepwise transport of the second decorative sheet 12 and a fixing device for fixing the second decorative sheet 12 to the first
• Tool half 21 include.
• the first decorative film 11 is provided as an insert, ie as a so-called insert and inserted into the second mold half.
• the first decorative film 11 is in particular thermoformed and punched out thermoforming process. These previous thermal deformation is not mandatory.
• the subsequent edge trimming can be done, for example, by punching, milling,
• Refining step special gloss levels, higher depth effect and
• the first decorative sheet 11 may be formed by position pins and / or electrostatic
• Outlet opening of Anspritzkanals 13 is positioned so that the plastic material between the two decorative films 11, 12 can enter and materially connects with two decorative films 11, 12 and so the main body 13 is formed.
• 4 shows the injection molding device 2 with injected plastic compound.
• the two decorative films 11, 12 are now pressed against the respective mold surfaces 21 f, 22 f and are materially connected to the injected plastic compound.
• the plastic compound may be a thermoplastic or a thermoplastic mixture of plastics, for example acrylonitrile-butadiene-styrene copolymer (ABS), polycarbonate (PC), polypropylene (PP),
• PMMA Polymethyl methacrylate
• PC / ABS acrylonitrile-butadiene-styrene copolymer
• the carrier layer 111 of the first decorative sheet 11 As a material for the carrier layer 111 of the first decorative sheet 11, the
• thermoformable plastic films can be produced as thermoformable plastic films.
• Carrier layer 111 assembled:
• Preferred processing temperatures are 200 ° C to 300 ° C.
• the required injection pressure is particularly dependent on part size, part geometry and
• Wall thickness and can vary in a wide range.
• a particularly tactile surface relief can be shaped into the surface of the second decorative film 12 facing away from the plastics material, in particular due to a between the decorative layer 122
• the tactile structure thus forms during injection molding when the second decorative film 12 is plastically deformable due to the heat and pressure of the injected plastic compound.
• the pattern layer can be formed directly from the wall 21 f of the cavity or by a separate insert, in particular by the carrier film 121 itself, are provided.
• At least one core may also be introduced into the cavity 23 between the decorative films 11, 12.
• cavities or recesses can be introduced into the plastic molded part 1, which are for receiving
• the core is preferably introduced by a punched-out in the first decorative sheet 11 in the space between the decorative sheets 11, 12.
• a mechanical aftertreatment can be carried out, in which the plastic molded part can still be cut, milled, polished or the like. This post-processing can also be done manually. Furthermore, the functional parts 114 can still be mounted on the first decorative film, in particular by gluing or laminating.
• Fig. 5 are again several design variants for plastic moldings. 1
• the second decorative film 12 is applied over the entire surface and has a continuous design.
• the second decorative film 12 is dark translucent and matt.
• the first decorative film 11 has a punched-out 115, in which, for example, a display can be used.
• the desired decorative elements or the desired decor are again introduced by means of laser, milling or punching.
• Decorative film 11 can be additionally held in a form-fitting manner on the molding surface 22f by means of a projection provided there and engaging in the recess 115. This can be the positioning accuracy of the decorative film 11 in the cavity 23rd increase, especially in large-scale decorative films 11th
• the second decorative film 22 also has a cut-out 124 which overlaps with the punch-out 115 of the first decorative film 11.
• the second decorative film 22 does not have a continuous design here, but has a single image which supplements the at least one decorative element and / or decor of the first decorative film 11.
• the second decorative film 22 likewise has a
• the second decorative film 22 is here again a black-translucent, matte continuous design.
• a recess 131 is provided for a display device, which can be introduced in the manner described above by using a core during injection molding.

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• Engineering & Computer Science (AREA)
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• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Injection Moulding Of Plastics Or The Like (AREA)
• Laminated Bodies (AREA)
• Moulds For Moulding Plastics Or The Like (AREA)

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• 2013
  • 2013-12-18 DE DE102013114276.1A patent/DE102013114276A1/de not_active Withdrawn
• 2014
  • 2014-12-15 CN CN201480075162.XA patent/CN105980127B/zh active Active
  • 2014-12-15 TR TR2018/18827T patent/TR201818827T4/tr unknown
  • 2014-12-15 WO PCT/EP2014/077807 patent/WO2015091383A1/de not_active Ceased
  • 2014-12-15 EP EP14824412.2A patent/EP3083183B1/de active Active
  • 2014-12-15 US US15/104,624 patent/US10377067B2/en active Active
  • 2014-12-15 ES ES14824412T patent/ES2698648T3/es active Active
  • 2014-12-15 MX MX2016007899A patent/MX378475B/es unknown
  • 2014-12-15 JP JP2016541333A patent/JP6614151B2/ja active Active
  • 2014-12-15 KR KR1020167019426A patent/KR102240696B1/ko active Active
• 2019
  • 2019-07-19 US US16/517,037 patent/US10875222B2/en active Active

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