WO2021119706A1 - Method for producing a frame front - Google Patents

Method for producing a frame front Download PDF

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Publication number
WO2021119706A1
WO2021119706A1 PCT/AT2020/060473 AT2020060473W WO2021119706A1 WO 2021119706 A1 WO2021119706 A1 WO 2021119706A1 AT 2020060473 W AT2020060473 W AT 2020060473W WO 2021119706 A1 WO2021119706 A1 WO 2021119706A1
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WO
WIPO (PCT)
Prior art keywords
frame
plastic body
curvature
rim
plate
Prior art date
Application number
PCT/AT2020/060473
Other languages
German (de)
French (fr)
Inventor
Rupert Spindelbalker
Original Assignee
Silhouette International Schmied Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Silhouette International Schmied Ag filed Critical Silhouette International Schmied Ag
Publication of WO2021119706A1 publication Critical patent/WO2021119706A1/en

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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
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D12/00—Producing frames
    • B29D12/02—Spectacle frames
    • 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
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C2045/0079—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping applying a coating or covering
    • 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
    • B29L2012/00—Frames
    • B29L2012/005—Spectacle frames

Definitions

  • the invention relates to a method for producing a spectacle frame with a frame provided with a coating and curved in its final shape with respect to the frame plane, which frame is milled from a prefabricated plate-shaped plastic body with a curvature determined by the curvature of the frame in its final shape.
  • the usual coatings of the spectacle frames milled from plate-shaped plastic bodies can only be applied with certain methods due to the requirements imposed by the spectacle frames themselves, which represents a further limitation of the manufacturing process.
  • the invention is therefore based on the object of producing a spectacle frame made of plastic with a milled frame in such a way that a high degree of dimensional stability can be ensured for the frame with a low-cost manufacturing method, with extensive freedom in terms of the choice of the plastic or the Coating.
  • the invention solves the problem in that the plate-shaped plastic body is prefabricated as a multi-layer injection-molded part with a curvature determined by the curvature of the frame in its final shape and provided with the intended coating before milling.
  • the frame does not have to be bent out of a flat frame surface after it has been milled to adapt to the anatomical conditions of the spectacle wearer, but is milled from a plastic body produced by injection molding, which is already curved according to the anatomical requirements, the frame already has after the milling process to its final spatial shape.
  • the frame outline shape can be different because the same anatomical requirements apply to the different frame outline shapes. This means that, due to the prefabrication, arched, plate-shaped plastic bodies with eyeglass frames in accordance with the anatomical requirements differently designed frame outline shapes can be milled so that plate-shaped plastic bodies for different spectacle frames can be prefabricated with an injection molding tool. Due to the curvature of the prefabricated plate-shaped plastic body, a five-axis milling machine is required for milling the frame.
  • the frames milled from a suitably prefabricated plastic body have a significantly higher dimensional stability than frames that are only thermally bent out of the frame plane after milling due to the curvature already taken into account during the injection molding of the plastic body.
  • frames are made from plastic bodies prefabricated with a corresponding curvature, there is no need to take into account the material-related requirements for subsequent thermal deformation.
  • materials can be used for the frames produced according to the invention which were previously unsuitable for the setting of such spectacle frames.
  • a polyamide can be used as the material for a layer of the plastic body.
  • the multilayer nature of the plastic body not only makes it possible to use different plastics, but also to combine plastics with other materials, for example by back-molding fabric, foils and the like.
  • the plate-shaped plastic body Due to the fact that there is no subsequent thermal deformation of the milled frame, it is also possible to provide the plate-shaped plastic body with a coating intended for the frame before milling the frame, which not only simplifies the coating process, but also Coatings allowed that can only be applied over a larger area. For example, it would be possible to provide the plate-shaped plastic body prefabricated with a curvature with a dip coating and a mirror coating, which allows surface effects as they are known for sun glasses.
  • FIG. 1 shows a plate-shaped plastic body prefabricated with a curvature in a top view
  • FIG. 2 shows this plastic body in a section along the line II-II in FIG. 1 and
  • FIG. 3 shows a section along the line III-III in FIG. 1.
  • the plate-shaped plastic body 1 produced in multiple layers in the injection molding process has an essentially rectangular basic shape with connecting webs 2 formed in the corner areas, via which the plastic body 1 can be held by milling.
  • the plastic body 1 has a thickening in a central section 3, which comes to lie in the area of the later nose bridge 4 of a frame 5 of an eyeglass frame to be milled from the plastic body 1, as shown in phantom in FIG Fig. 1 is indicated.
  • the arched plastic body 1 Compared to a mounting plane 6 determined by an extension of the nose bridge 4, the arched plastic body 1 has a mounting disk angle a for the frame 5 to be milled due to its curvature.
  • a frame curvature in the direction of the forward inclination of the spectacle frame can also be taken into account by a corresponding curvature of the plastic body 1 in the transverse direction, as can be seen in FIG. 3.
  • the plastic body 1 Before an eyeglass frame is milled out of the plastic body 1 manufactured by injection molding, the plastic body 1 is provided with a coating which determines the surface of the eyeglass frame milled from the plastic body. This is possible because, due to the curvature of the plastic body 1, a subsequent deformation of the frame 5 milled from the plastic body 1 is no longer necessary and therefore a stress on the surface layer otherwise caused by the deformation is avoided. Due to the curvature adapted to certain anatomical requirements of an average spectacle wearer and the thickness profile adapted to the strength requirements, the prefabricated plastic body 1 enables a particularly advantageous production of the frames 5 of spectacle frames because these frames 5 can be milled from the plastic body 1 with different contour shapes, without having to be reworked, in particular with regard to their spatial shape.
  • the multilayer nature of the injection-molded plastic body 1 makes it possible, among other things, to back-inject, for example, a printed film, a fabric or other layer materials with a non-thermoplastic plastic itself.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Eyeglasses (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to a method for producing a frame front having a rim (5), which rim, in its final form, is curved relative to the frame front plane (6) and which rim is provided with a coating, the rim being milled from a premanufactured planar plastic body (1) having a curvature determined by the curving of the rim (5) in its final form. The aim of the invention is to create advantageous production conditions. This aim is achieved, according to the invention, in that the planar plastic body (1) is premanufactured as an injection-molded part injection-molded in multiple layers and having a curvature determined by the curving of the rim (5) in its final form and is provided with the intended coating before the milling process.

Description

Verfahren zur Herstellung einer Brillenfassung Method for manufacturing a spectacle frame
Technisches Gebiet Technical area
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung einer Brillenfassung mit einem in seiner Endform gegenüber der Fassungsebene gekrümmten, mit einer Beschichtung versehenen Rahmen, der aus einem vorgefertigten plattenförmigen Kunststoffkörper mit einer durch die Krümmung des Rahmens in seiner Endform bestimmten Wölbung gefräst wird. The invention relates to a method for producing a spectacle frame with a frame provided with a coating and curved in its final shape with respect to the frame plane, which frame is milled from a prefabricated plate-shaped plastic body with a curvature determined by the curvature of the frame in its final shape.
Stand der Technik State of the art
Um in vergleichsweise einfacher Art Brillenfassungen aus Kunststoff hersteilen zu können, ist es bekannt, die Fassungsrahmen aus einer ebenen Kunststoffplatte zu fräsen. Der Fassungsscheibenwinkel und allenfalls eine zusätzliche Krümmung des Rahmens in Richtung der Vorneigung werden durch eine thermische Verformung des gefrästen Rahmens berücksichtigt. Als Kunststoff eignet sich hierfür insbesondere ein Zelluloseacetat. Nachteilig bei dieser Herstellung von Brillenfassungen ist vor allem, dass durch die thermische Verformung die Formstabilität des gebogenen Rahmens höheren Anforderungen nicht entsprechen kann. In order to be able to manufacture spectacle frames from plastic in a comparatively simple manner, it is known to mill the frame from a flat plastic plate. The frame angle and any additional curvature of the frame in the direction of the forward inclination are taken into account by thermal deformation of the milled frame. Cellulose acetate is particularly suitable as the plastic for this purpose. The main disadvantage of this production of spectacle frames is that due to the thermal deformation, the dimensional stability of the curved frame cannot meet higher requirements.
Aus der WO 2015/155672 A1 ist bereits bekannt, den Rahmen einer Brillenfassung aus einem vorgefertigten, gewölbten, plattenförmigen Kunststoffkörperzu fräsen. Die durch die Krümmung des Rahmens in seiner Endform bestimmte Wölbung wird jedoch nicht durch ein Spritzen des Kunststoffs, sondern durch eine thermoplastische Verformung eines ebenen, gegebenenfalls durch ein Spritzen hergestellten Kunststoffkörpers erreicht. Das Wölben des Kunststoffkörpers ist allerdings von den thermoplastischen Verformungseigenschaften des Kunststoffs abhängig, sodass dieses bekannte Verfahren nur in Verbindung mit entsprechenden Kunststoffen angewandt werden kann. It is already known from WO 2015/155672 A1 to mill the frame of a spectacle frame from a prefabricated, arched, plate-shaped plastic body. However, the curvature determined by the curvature of the frame in its final shape is not achieved by injection molding the plastic, but rather by thermoplastic deformation of a flat plastic body, possibly produced by injection molding. The bulging of the plastic body is, however, dependent on the thermoplastic deformation properties of the plastic, so that it is known Process can only be used in conjunction with appropriate plastics.
Dazu kommt, dass die üblichen Beschichtungen der aus plattenförmigen Kunststoffkörpern gefrästen Brillenfassungen aufgrund der durch die Brillenfassungen selbst bedingten Vorgaben nur mit bestimmten Verfahren aufgebracht werden können, was eine weitere Einschränkung des Fertigungsverfahrens darstellt. In addition, the usual coatings of the spectacle frames milled from plate-shaped plastic bodies can only be applied with certain methods due to the requirements imposed by the spectacle frames themselves, which represents a further limitation of the manufacturing process.
Darstellung der Erfindung Presentation of the invention
Der Erfindung liegt somit die Aufgabe zugrunde, eine Brillenfassung aus Kunststoff mit einem gefrästen Rahmen so herzustellen, dass mit einer wenig aufwendigen Herstellungsweise eine hohe Formstabilität für den Rahmen sichergestellt werden kann, und zwar mit einer weitgehenden Freiheit hinsichtlich der Wahl des eingesetzten Kunstoffs bzw. der Beschichtung. The invention is therefore based on the object of producing a spectacle frame made of plastic with a milled frame in such a way that a high degree of dimensional stability can be ensured for the frame with a low-cost manufacturing method, with extensive freedom in terms of the choice of the plastic or the Coating.
Ausgehend von einem Verfahren der eingangs geschilderten Art löst die Erfindung die gestellte Aufgabe dadurch, dass der plattenförmige Kunststoffkörper als ein mehrschichtig gespritzter Spritzgussteil mit einer durch die Krümmung des Rahmens in seiner Endform bestimmten Wölbung vorgefertigt und vor dem Fräsen mit der vorgesehenen Beschichtung versehen wird. Based on a method of the type described above, the invention solves the problem in that the plate-shaped plastic body is prefabricated as a multi-layer injection-molded part with a curvature determined by the curvature of the frame in its final shape and provided with the intended coating before milling.
Da zufolge dieser Maßnahme der Rahmen nicht nach seiner Fräsung zur Anpassung an die anatomischen Gegebenheiten des Brillenträgers aus einer ebenen Rahmenfläche ausgebogen werden muss, sondern aus einem durch ein Formspritzen hergestellten Kunststoffkörper gefräst wird, der bereits entsprechend der anatomischen Voraussetzungen gewölbt ist, weist der Rahmen bereits nach dem Fräsvorgang seine räumliche Endform auf. Die Rahmenumrissform kann dabei unterschiedlich ausfallen, weil ja für die unterschiedlichen Rahmenumrissformen die gleichen anatomischen Voraussetzungen gelten. Dies bedeutet, dass durch die Vorfertigung entsprechend den anatomischen Voraussetzungen gewölbter, plattenförmiger Kunststoffkörper Brillenfassungen mit unterschiedlich gestalteten Rahmenumrissformen gefräst werden können, sodass mit einem Spritzgusswerkzeug plattenförmige Kunststoffkörper für unterschiedliche Brillenfassungen vorgefertigt werden können. Aufgrund der Wölbung der vorgefertigten plattenförmigen Kunststoffkörper wird für das Fräsen der Rahmen allerdings eine fünfachsige Fräsmaschine erforderlich. As a result of this measure, the frame does not have to be bent out of a flat frame surface after it has been milled to adapt to the anatomical conditions of the spectacle wearer, but is milled from a plastic body produced by injection molding, which is already curved according to the anatomical requirements, the frame already has after the milling process to its final spatial shape. The frame outline shape can be different because the same anatomical requirements apply to the different frame outline shapes. This means that, due to the prefabrication, arched, plate-shaped plastic bodies with eyeglass frames in accordance with the anatomical requirements differently designed frame outline shapes can be milled so that plate-shaped plastic bodies for different spectacle frames can be prefabricated with an injection molding tool. Due to the curvature of the prefabricated plate-shaped plastic body, a five-axis milling machine is required for milling the frame.
Die aus einem entsprechend vorgefertigten Kunststoffkörper gefrästen Rahmen weisen aufgrund der bereits beim Spritzguss der Kunststoffkörper berücksichtigten Wölbung eine erheblich höhere Formbeständigkeit als Rahmen auf, die erst nach dem Fräsen thermisch aus der Rahmenebene gebogen werden. Beim Fierstellen von Rahmen aus mit einer entsprechenden Wölbung vorgefertigten Kunststoffkörpern braucht außerdem keine Rücksicht auf die werkstoffbezogenen Voraussetzungen für eine nachträgliche thermische Verformung genommen zu werden. Dies bedeutet, dass für die erfindungsgemäß hergestellten Rahmen Werkstoffe eingesetzt werden können, die bisher für die Fierstellung solcher Brillenfassungen ungeeignet waren. So kann beispielsweise ein Polyamid als Werkstoff für eine Schicht des Kunststoffkörpers eingesetzt werden. Durch die Mehrschichtigkeit des Kunststoffkörpers wird es nicht nur möglich, verschiedene Kunststoffe einzusetzen, sondern auch Kunststoffe mit anderen Werkstoffen zu kombinieren, beispielsweise indem Gewebe, Folien und dergleichen hinterspritzt werden. The frames milled from a suitably prefabricated plastic body have a significantly higher dimensional stability than frames that are only thermally bent out of the frame plane after milling due to the curvature already taken into account during the injection molding of the plastic body. In addition, when frames are made from plastic bodies prefabricated with a corresponding curvature, there is no need to take into account the material-related requirements for subsequent thermal deformation. This means that materials can be used for the frames produced according to the invention which were previously unsuitable for the setting of such spectacle frames. For example, a polyamide can be used as the material for a layer of the plastic body. The multilayer nature of the plastic body not only makes it possible to use different plastics, but also to combine plastics with other materials, for example by back-molding fabric, foils and the like.
Wegen des Umstands, dass ein nachträgliches thermisches Verformen der gefrästen Rahmen entfällt, wird es außerdem möglich, den plattenförmigen Kunststoffkörper vor dem Fräsen des Rahmens mit einer für den Rahmen vorgesehenen Beschichtung zu versehen, was nicht nur eine Vereinfachung des Beschichtungsvorgangs mit sich bringt, sondern auch Beschichtungen erlaubt, die nur großflächiger aufgebracht werden können. So wäre es beispielsweise möglich, die mit einer Wölbung vorgefertigten, plattenförmigen Kunststoffkörper mit einer Tauchlackierung und einer Verspiegelung zu versehen, was Oberflächenwirkungen erlaubt, wie sie bei Sonnengläsern bekannt sind. Due to the fact that there is no subsequent thermal deformation of the milled frame, it is also possible to provide the plate-shaped plastic body with a coating intended for the frame before milling the frame, which not only simplifies the coating process, but also Coatings allowed that can only be applied over a larger area. For example, it would be possible to provide the plate-shaped plastic body prefabricated with a curvature with a dip coating and a mirror coating, which allows surface effects as they are known for sun glasses.
Kurze Beschreibung der Erfindung Anhand der Zeichnung wird das erfindungsgemäße Verfahren näher erläutert. Es zeigen Brief description of the invention The method according to the invention is explained in more detail with reference to the drawing. Show it
Fig. 1 einen mit einer Wölbung vorgefertigten, plattenförmigen Kunststoffkörper in einer Draufsicht, 1 shows a plate-shaped plastic body prefabricated with a curvature in a top view,
Fig. 2 diesen Kunststoffkörper in einem Schnitt nach der Linie ll-ll der Fig. 1 und Fig. 3 einen Schnitt nach der Linie lll-lll der Fig. 1 . FIG. 2 shows this plastic body in a section along the line II-II in FIG. 1 and FIG. 3 shows a section along the line III-III in FIG. 1.
Wege zur Ausführung der Erfindung Ways of Carrying Out the Invention
Der im Spritzgussverfahren mehrschichtig hergestellte, plattenförmige Kunststoffkörper 1 weist eine im Wesentlichen rechteckige Grundform mit in den Eckbereichen angeformten Anschlussstegen 2 auf, über die der Kunststoffkörper 1 frästechnisch gehalten werden kann. Wie insbesondere der Fig. 2 zu entnehmen ist, weist der Kunststoffkörper 1 in einem mittleren Abschnitt 3 eine Verdickung auf, die im Bereich des späteren Nasenstegs 4 eines aus dem Kunststoffkörper 1 zu fräsenden Rahmens 5 einer Brillenfassung zu liegen kommt, wie dies strichpunktiert in der Fig. 1 angedeutet ist. The plate-shaped plastic body 1 produced in multiple layers in the injection molding process has an essentially rectangular basic shape with connecting webs 2 formed in the corner areas, via which the plastic body 1 can be held by milling. As can be seen in particular from FIG. 2, the plastic body 1 has a thickening in a central section 3, which comes to lie in the area of the later nose bridge 4 of a frame 5 of an eyeglass frame to be milled from the plastic body 1, as shown in phantom in FIG Fig. 1 is indicated.
Gegenüber einer durch eine Verlängerung des Nasenstegs 4 bestimmten Fassungsebene 6 weist der gewölbte Kunststoffkörper 1 aufgrund seiner Wölbung einen Fassungsscheibenwinkel a für den zu fräsenden Rahmen 5 auf. Außerdem kann durch eine entsprechende Wölbung des Kunststoffkörpers 1 in Querrichtung auch eine Rahmenkrümmung in Richtung der Vorneigung der Brillenfassung berücksichtigt werden, wie dies in der Fig. 3 zu sehen ist. Compared to a mounting plane 6 determined by an extension of the nose bridge 4, the arched plastic body 1 has a mounting disk angle a for the frame 5 to be milled due to its curvature. In addition, a frame curvature in the direction of the forward inclination of the spectacle frame can also be taken into account by a corresponding curvature of the plastic body 1 in the transverse direction, as can be seen in FIG. 3.
Bevor eine Brillenfassung aus dem durch ein Spritzen gefertigten Kunststoffkörper 1 ausgefräst wird, wird der Kunststoffkörper 1 mit einer Beschichtung versehen, die die Oberfläche der aus dem Kunststoffkörper gefrästen Brillenfassung bestimmt. Dies wird möglich, weil aufgrund der Wölbung des Kunststoffkörpers 1 eine nachträgliche Verformung des aus dem Kunststoffkörper 1 gefrästen Rahmens 5 nicht mehr notwendig ist und daher eine sonst durch die Verformung bedingte Belastung der Oberflächenschicht vermieden wird.. Aufgrund der an bestimmte anatomische Voraussetzungen eines durchschnittlichen Brillenträgers angepassten Wölbung und des an die Festigkeitsanforderungen angepassten Dickenverlaufs wird durch den vorgefertigten Kunststoffkörper 1 eine besonders vorteilhafte Fertigung der Rahmen 5 von Brillenfassungen ermöglicht, weil diese Rahmen 5 mit unterschiedlichen Umrissformen aus dem Kunststoffkörper 1 gefräst werden können, ohne insbesondere hinsichtlich ihrer räumlichen Form nachbearbeiten werden zu müssen. Before an eyeglass frame is milled out of the plastic body 1 manufactured by injection molding, the plastic body 1 is provided with a coating which determines the surface of the eyeglass frame milled from the plastic body. This is possible because, due to the curvature of the plastic body 1, a subsequent deformation of the frame 5 milled from the plastic body 1 is no longer necessary and therefore a stress on the surface layer otherwise caused by the deformation is avoided. Due to the curvature adapted to certain anatomical requirements of an average spectacle wearer and the thickness profile adapted to the strength requirements, the prefabricated plastic body 1 enables a particularly advantageous production of the frames 5 of spectacle frames because these frames 5 can be milled from the plastic body 1 with different contour shapes, without having to be reworked, in particular with regard to their spatial shape.
Die Mehrschichtigkeit des gespritzten Kunststoffkörpers 1 erlaubt es unter anderem, beispielsweise eine bedruckte Folie, ein Gewebe oder andere Schichtmaterialien selbst mit einem nicht thermoplastischen Kunststoff zu hinterspritzen. The multilayer nature of the injection-molded plastic body 1 makes it possible, among other things, to back-inject, for example, a printed film, a fabric or other layer materials with a non-thermoplastic plastic itself.

Claims

Patentansprüche Claims
1. Verfahren zur Herstellung einer Brillenfassung mit einem in seiner Endform gegenüber der Fassungsebene (6) gekrümmten, mit einer Beschichtung versehenen Rahmen (5), der aus einem vorgefertigten plattenförmigen Kunststoffkörper (1 ) mit einer durch die Krümmung des Rahmens (5) in seiner Endform bestimmten Wölbung gefräst wird, dadurch gekennzeichnet, dass der plattenförmige Kunststoffkörper (1) als ein mehrschichtig gespritzter Spritzgussteil mit einer durch die Krümmung des Rahmens (5) in seiner Endform bestimmten Wölbung vorgefertigt und vor dem Fräsen mit der vorgesehenen Beschichtung versehen wird. 1. A method for producing a spectacle frame with a frame (5) which is curved in its final shape with respect to the frame plane (6) and provided with a coating, which consists of a prefabricated plate-shaped plastic body (1) with a by the curvature of the frame (5) in its Final shape determined curvature is milled, characterized in that the plate-shaped plastic body (1) is prefabricated as a multi-layer injection molded part with a curvature determined by the curvature of the frame (5) in its final shape and provided with the intended coating before milling.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass der plattenförmige Kunststoffkörper (1) mit einer Schicht aus einem Polyamid gespritzt wird. 2. The method according to claim 1, characterized in that the plate-shaped plastic body (1) is injection-molded with a layer made of a polyamide.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der plattenförmige Kunststoffkörper (1 ) durch ein Hinterspritzen einer Dekorfolie oder einer textilen Warenbahn mit Kunststoff hergestellt wird. 3. The method according to claim 1 or 2, characterized in that the plate-shaped plastic body (1) is produced by back-molding a decorative film or a textile web with plastic.
PCT/AT2020/060473 2019-12-20 2020-12-16 Method for producing a frame front WO2021119706A1 (en)

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US20100236696A1 (en) * 2007-10-30 2010-09-23 Kim Joung-Soon Method of manufacturing glasses frame made of polyetherimide resin
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CN104118126A (en) * 2014-07-25 2014-10-29 厦门腾诺光学科技有限公司 Method for producing spectacle frame
EP2837480A2 (en) * 2013-08-15 2015-02-18 Plastinax Austral Ltee System and process for shot-injection molding an eyeglass temple with a wire core
WO2015155672A1 (en) 2014-04-09 2015-10-15 SAFILO SOCIETÀ AZIONARIA FABBRICA ITALIANA LAVORAZIONE OCCHIALI S.p.A. A method of making frame components for spectacles and a component made by this method
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0848034A2 (en) * 1996-12-12 1998-06-17 Ems-Inventa Ag Decorated half-finished product from transparent polyamid, process of preparation thereof and its use
WO2007013462A1 (en) * 2005-07-27 2007-02-01 Eyeplus Co., Ltd. Base plate and method for manufacturing front frame of spectacles
US20100236696A1 (en) * 2007-10-30 2010-09-23 Kim Joung-Soon Method of manufacturing glasses frame made of polyetherimide resin
TW201124261A (en) * 2010-01-08 2011-07-16 Zhong-Han Huang Substrate composite structure and its manufacturing method.
EP2837480A2 (en) * 2013-08-15 2015-02-18 Plastinax Austral Ltee System and process for shot-injection molding an eyeglass temple with a wire core
WO2015155672A1 (en) 2014-04-09 2015-10-15 SAFILO SOCIETÀ AZIONARIA FABBRICA ITALIANA LAVORAZIONE OCCHIALI S.p.A. A method of making frame components for spectacles and a component made by this method
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US20190072780A1 (en) * 2016-02-26 2019-03-07 Hapter S.R.L. Method for producing an object comprising a rigid metal core and a polymer-material external coating, and object obtained therewith

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