(19)
(11)EP 3 398 770 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
11.08.2021 Bulletin 2021/32

(21)Application number: 17883196.2

(22)Date of filing:  19.12.2017
(51)International Patent Classification (IPC): 
B29C 45/00(2006.01)
B32B 3/26(2006.01)
G06F 3/041(2006.01)
B32B 21/08(2006.01)
B32B 7/12(2006.01)
(86)International application number:
PCT/KR2017/015049
(87)International publication number:
WO 2018/117611 (28.06.2018 Gazette  2018/26)

(54)

INTERIOR MATERIAL AND METHOD FOR MANUFACTURING SAME

INNENMATERIAL UND VERFAHREN ZUR HERSTELLUNG DAVON

MATÉRIAU INTÉRIEUR ET SON PROCÉDÉ DE FABRICATION


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 20.12.2016 KR 20160174836

(43)Date of publication of application:
07.11.2018 Bulletin 2018/45

(73)Proprietors:
  • Intops. Co., Ltd.
    Anyang-si, Gyeonggi-do 14088 (KR)
  • Kim, Keun Ha
    Gyeonggi-do 14088 (KR)

(72)Inventors:
  • KIM, Keun Ha
    Anyang-si Gyeonggi-do 14088 (KR)
  • CHOI, Won Jae
    Gyeonggi-do 14088 (KR)
  • LEE, Hong II
    Gyeonggi-do 14088 (KR)

(74)Representative: M. Zardi & Co S.A. 
Via G. B. Pioda, 6
6900 Lugano
6900 Lugano (CH)


(56)References cited: : 
EP-A2- 1 924 000
JP-A- 2014 085 902
KR-A- 20080 107 808
KR-B1- 100 913 811
DE-A1-102014 203 000
KR-A- 20060 068 916
KR-A- 20100 089 126
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    TECHNICAL FIELD



    [0001] The present disclosure relates to interior materials used for finishing the outside of a product, and a manufacturing method thereof, and more particularly, to interior materials capable of touch sensing to perform a preset function, and a manufacturing method thereof.

    BACKGROUND ART



    [0002] Interior materials mean materials used for finishing the outside of a product. Interior materials may improve texture and touch of a product and protect an internal structure by blocking noise, fire, or oxygen. However, it is the core function of the interior materials to provide an ascetic exterior of a product to make the product beautiful so that everyone appreciates the beauty of the product. Accordingly, the interior materials may be manufactured to show an ascetic factor to the outside. Furthermore, recently, in addition to the traditional ascetic function of interior materials, interest in interior materials having an additional function such as a touch function is growing.

    [0003] In relation to technology that emphasizes the above-described ascetic element and touch function of the interior materials, Korean Patent No. 10-0913811 discloses a molded product using a real wood film.

    [0004] It is a main feature of the molded product to be manufactured by thermally pressing an adhesive film on each of upper and lower sides of a real wood seat. The molded product manufactured as above is provided on interior and exterior parts of an automobile or panels of various electronic products. Real wood may signify natural wood that is processed to fit to a desired purpose. A real wood sheet may signify a laminate of the real wood. Since a real wood material is used in the related-art technology, interior materials may have the texture of natural wood. Accordingly, the exterior of the interior materials may be beautiful.

    [0005] In this regard, the molded product using the real wood film may merely show only the texture of natural wood, not have a function of emitting light over a surface of real wood according to a desired pattern.

    [0006] Furthermore, the molded product using the real wood film does not include technology performing a preset function through touch. A separate physical button or switch to perform the function is needed. EP 1924000 A2 discloses a household appliance comprising a control panel with touch-type user control devices and a flexible type printed circuit, wherein the control devices are associated with or built in said flexible printed circuit. DE 10 2014 203000 A1 discloses a method for producing a light emitting trim part for the interior of a motor vehicle, comprising the following method steps: providing a first decorative foil and a second, from the first decorative foil different decorative film in each case a tool, thermoforming of the first and second decorative film within the respective tools, and inserting the first and the second decorative film in an injection molding machine.

    DETAILED DESCRIPTION OF THE INVENTION


    Technical problem



    [0007] Provided are interior materials having a surface exhibiting texture of natural wood, capable of emitting light, and performing a preset function by touching the surface without a separate physical button, and a manufacturing method of the interior materials.

    Technical solution



    [0008] According to an aspect of the present disclosure, interior materials which are attached to an outer surface of a plastic injection mold and expose, to outside, light selectively emitted from a light source arranged in the plastic injection mold, include: a wood pattern layer formed of natural wood and having a plurality of first lighting holes through which the light selectively emitted from the light source passes; a light block layer coupled to a rear surface of the wood pattern layer, blocking light, and having a plurality of second lighting holes formed therein respectively corresponding to the plurality of first lighting holes; and a touch sensor electrode coupled to a rear surface of the light block layer and controlling an operation of a preset function by a touch.

    [0009] According to the invention a method of manufacturing interior materials that are attached to an outer surface of a plastic injection mold and expose, to outside, light selectively emitted from a light source arranged in the plastic injection mold, includes: (A) preparing a wood pattern layer; (B) coupling a light block layer to a rear surface of the wood pattern layer, wherein the light block layer is formed of a light blocking material; (C) printing a touch sensor electrode on the rear surface of the light block layer, wherein the touch sensor electrode controls an operation of a preset function by a touch; and (D) forming a plurality of lighting holes that pass through the wood pattern layer, the light block layer, and the touch sensor electrode, wherein the light selectively emitted from the light source passes through the plurality of lighting holes.

    [0010] In the operation (B), the wood pattern layer and the light block layer may be attached to each other by a hot-melt method by providing a nonwoven fabric coated with an adhesive mixed with polyether and ester between the wood pattern layer and the light block layer.

    ADVANTAGEOUS EFFECTS OF THE INVENTION



    [0011] According to the interior materials and the manufacturing method thereof, according to the present disclosure, the surface of interior materials shows texture of natural wood, and simultaneously with emission of the surface of interior materials, the performing of a function preset to the interior materials may be controlled by touching the surface of interior materials. Accordingly, without a physical button on the surface of interior materials, a luxurious and integrated design may be obtained.

    DESCRIPTION OF THE DRAWINGS



    [0012] 

    FIG. 1 is a cross-sectional view of interior materials and a plastic injection mold, according to an embodiment; and

    FIG. 2 is a flowchart of a method of manufacturing the interior materials of FIG. 1.


    BEST MODE



    [0013] While the present disclosure has been particularly shown and described with reference to preferred embodiments using specific terminologies, the embodiments and terminologies should be considered in descriptive sense only and not for purposes of limitation. Therefore, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the following claims.

    [0014] FIG. 1 is a cross-sectional view of interior materials and a plastic injection mold, according to an embodiment. The interior materials according to an embodiment are described in detail with reference to the accompanying drawing.

    [0015] Referring to the drawing, interior materials 100 according to an embodiment adhere to an outer surface of a plastic injection mold 200, and may include a wood pattern layer 110, a light block layer 120, and a touch sensor electrode 130.

    [0016] The plastic injection mold 200 is an object to which the interior materials 100 are adhered and may be formed by insert injection with the interior materials 100. Furthermore, the interior materials 100 may be adhered to the plastic injection mold 200 by a thermoplastic adhesive layer 300 that includes a hot-melt layer, a polyethylene therephthalate glycol (PETG) layer, and a thermoplastic polyurethane (TPU) layer.

    [0017] Although FIG. 1 illustrates that the plastic injection mold 200 is a flat surface having a certain thickness, this is a mere embodiment and the plastic injection mold 200 may be formed in various shapes according to the shape of a desired product.

    [0018] The wood pattern layer 110 may be formed of natural wood. Accordingly, the interior materials 100 may show texture of natural wood, thereby representing a luxurious design.

    [0019] The light block layer 120 is coupled to a rear surface of the wood pattern layer 110. In detail, the interior materials 100 according to an embodiment may further include a mixed adhesive layer 140. The wood pattern layer 110 and the light block layer 120 are attached to each other by the mixed adhesive layer 140. The mixed adhesive layer 140 is described in detail later.

    [0020] The touch sensor electrode 130 is coupled to a rear surface of the light block layer 120.

    [0021] The touch sensor electrode 130 is operated by touching a surface of the interior materials 100 using a finger.

    [0022] A touch operation mechanism may include a resistive method and a capacitive method. According to the resistive method, an operation is performed by sensing pressure applied by a finger to the surface of the interior materials 100. In the capacitive method, a transparent electrode is formed by coating special conductive metal, for example, a tin antimony oxide (TAO) material, on the surface of the interior materials 100, and thus a certain amount of current flows on the surface. The method is selected according to a module of a product that is used, and the interior materials 100 according to an embodiment are not limited to any one method.

    [0023] When the touch sensor electrode 130 is operated, a signal is transmitted to a touch module (not shown) arranged inside the plastic injection mold 200, and a preset function may be performed.

    [0024] The preset function may be a substitute of a button function such as an on/off switch, wind strength, or wind mode of an air conditioner. In addition, the function may be making sound or playing music, or generating vibration to a rhythm. The preset function is added to the interior materials 100 so that a desired additional function is performed by the interior materials 100. The function may include various functions as desired.

    [0025] Although not illustrated in FIG. 1, a light source may be provided on a rear surface of the plastic injection mold 200. When the light source is provided on the rear surface of the plastic injection mold 200, the plastic injection mold 200 may be transparent or semitransparent to enable light emitted from the light source to pass through the plastic injection mold 200.

    [0026] Furthermore, although not illustrated in FIG. 1, a controller for controlling the light source and a power supply unit that receives a control signal from the controller and supplies power to the light source may be provided in the plastic injection mold 200. However, since the light emission mechanism of the light source is well-known technology, a detailed description thereof is omitted.

    [0027] The light block layer 120 may be formed of a material that blocks light. Accordingly, the light emitted from the light source may pass through only a second lighting hole 120a formed in the light block layer 120 and a first lighting hole 110a formed in the wood pattern layer 110, not through another part of the interior materials 100.

    [0028] in detail, the light emitted from the light source is exposed to the outside by sequentially passing through a plurality of lighting holes 130a, 120a, 140a, and 110a respectively corresponding to the touch sensor electrode 130, the light block layer 120, the mixed adhesive layer 140, and the wood pattern layer 110.

    [0029] In other words, the lighting holes 130a, 120a, 140a, and 110a adjust the intensity of the light exposed to the outside of the interior materials 100 according to the number and size thereof. Accordingly, the natural wood material of the wood pattern layer 110 and additionally the light thinly emitted to the outside may represent a luxurious feeling of the interior materials 100.

    [0030] FIG. 2 is a flowchart of a method of manufacturing the interior materials of FIG. 1. A method of manufacturing interior materials according to an embodiment is described in detail with reference to the accompanying drawing.

    [0031] First, the wood pattern layer 110 is prepared to manufacture the interior materials 100 according to an embodiment (A).

    [0032] Next, the light block layer 120 that is manufactured of a material that blocks light is coupled to the rear surface of the wood pattern layer 110 (B). In detail, the wood pattern layer 110 and the light block layer 120 may be coupled to each other by applying a hot-melt method to the mixed adhesive layer 140. In this state, a nonwoven fabric coated with an adhesive mixed with polyether and ester (poylether-ester) may be used as the mixed adhesive layer 140.

    [0033] Next, the touch sensor electrode 130 for controlling an operation of the light source by pressure is printed on the rear surface of the light block layer 120 (C).

    [0034] Finally, the lighting holes 110a, 120a, 140a, and 130a passing through the wood pattern layer 110, the light block layer 120, the mixed adhesive layer 140 and the touch sensor electrode 130 are formed to allow the light selectively emitted from the light source to pass therethrough (D).

    [0035] To adjust the intensity of the light radiated from the surface of the interior materials 100, the size and number of the lighting holes 110a, 120a, 140a, and 130a formed to pass through the interior materials 100 may be variously selected according to the purpose thereof.

    [0036] As described above, the interior materials 100 and the manufacturing method thereof according to the present disclosure, as texture of natural wood is embodied on the surface of the interior materials 100, and the surface of interior materials emits light and simultaneously, an operation of a preset function in the interior materials may be controlled by touching the surface of interior materials. Accordingly, without a physical button on the surface of interior materials, a luxurious and integrated design may be embodied.

    [List of reference numerals]



    [0037] 

    100: interior materials

    110: wood pattern layer

    120: light block layer

    130: touch sensor electrode

    140: mixed adhesive layer

    200: plastic injection mold

    300: thermoplastic adhesive layer




    Claims

    1. Interior materials (100) for being attached to an outer surface of a plastic injection mold (200) and exposing, to outside, light selectively emitted from a light source arranged in the plastic injection mold, the interior materials comprising:
    a wood pattern layer (110) formed of natural wood and having a plurality of first lighting holes through which the light selectively emitted from the light source passes, characterized by further comprising:

    a light block layer (120) coupled to a rear surface of the wood pattern layer (110), blocking light, and having a plurality of second lighting holes formed therein respectively corresponding to the plurality of first lighting holes; and

    a touch sensor electrode (130) coupled to a rear surface of the light block layer (120) and controlling an operation of a preset function by a touch, and having a plurality of third lighting holes formed therein respectively corresponding to the plurality of the second lighting holes.


     
    2. A method of manufacturing interior materials (100) that are attached to an outer surface of a plastic injection mold (200) and expose, to outside, light selectively emitted from a light source arranged in the plastic injection mold, the method comprising:

    (A) preparing a wood pattern layer (110);

    (B) coupling a light block layer (120) to a rear surface of the wood pattern layer, wherein the light block layer is formed of a light blocking material;

    (C) printing a touch sensor electrode (130) on the rear surface of the light block layer, wherein the touch sensor electrode controls an operation of a preset function by a touch; and

    (D) forming a plurality of lighting holes that pass through the wood pattern layer (110), the light block layer (120), and the touch sensor electrode (130), wherein the light selectively emitted from the light source passes through the plurality of lighting holes.


     
    3. The method of claim 2, wherein, in the operation (B), the wood pattern layer and the light block layer are attached to each other by a hot-melt method by providing a nonwoven fabric coated with an adhesive mixed with polyether and ester between the wood pattern layer and the light block layer.
     


    Ansprüche

    1. Innenmaterialien (100), um an einer äußeren Oberfläche einer Kunststoffspritzgussform (200) angebracht zu sein, und die, zu einer Außenseite, Licht exponieren, das von einer in der Kunststoffspritzgussform angeordneten Lichtquelle selektiv emittiert wurde, wobei die Innenmaterialien umfassen:
    eine Holzmusterschicht (110), die aus natürlichem Holz gebildet ist und eine Vielzahl von ersten Beleuchtungslöchern aufweist, durch die das von der Lichtquelle selektiv emittierte Licht hindurchgeht, dadurch gekennzeichnet, dass sie ferner umfassen:

    eine Lichtblockierschicht (120), die mit einer hinteren Oberfläche der Holzmusterschicht (110) gekoppelt ist, die Licht blockiert, und eine Vielzahl von zweiten Beleuchtungslöchern aufweist, die darin jeweils entsprechend der Vielzahl von ersten Beleuchtungslöchern gebildet sind; und

    eine Touch-Sensor-Elektrode (130), die mit einer hinteren Oberfläche der Lichtblockierschicht (120) gekoppelt ist und einen Betrieb einer voreingestellten Funktion durch eine Berührung steuert, und eine Vielzahl von dritten Beleuchtungslöchern aufweist, die darin jeweils entsprechend der Vielzahl der zweiten Beleuchtungslöcher gebildet sind.


     
    2. Verfahren zum Herstellen von Innenmaterialien (100), die an einer äußeren Oberfläche einer Kunststoffspritzgussform (200) angebracht sind und, zu einer Außenseite, Licht exponieren, das von einer in der Kunststoffspritzgussform angeordneten Lichtquelle selektiv emittiert wurde, wobei das Verfahren umfasst:

    (A) Vorbereiten einer Holzmusterschicht (110);

    (B) Koppeln einer Lichtblockierschicht (120) mit einer hinteren Oberfläche der Holzmusterschicht, wobei die Lichtblockierschicht aus einem Lichtblockiermaterial gebildet ist;

    (C) Drucken einer Touch-Sensor-Elektrode (130) auf die hintere Oberfläche der Lichtblockierschicht, wobei die Touch-Sensor-Elektrode einen Betrieb einer voreingestellten Funktion durch eine Berührung steuert; und

    (D) Bilden einer Vielzahl von Beleuchtungslöchern, die durch die Holzmusterschicht (110), die Lichtblockierschicht (120), und die Touch-Sensor-Elektrode (130) hindurchgehen, wobei das von der Lichtquelle selektiv emittierte Licht durch die Vielzahl von Beleuchtungslöchern hindurchgeht.


     
    3. Verfahren nach Anspruch 2, wobei, bei dem Betrieb (B), die Holzmusterschicht und die Lichtblockierschicht durch ein Hot-Melt-Verfahren durch Bereitstellen eines Vliesstoffs, der mit einem mit Polyether und -ester gemischten Haftmittel bedeckt ist, zwischen der Holzmusterschicht und der Lichtblockierschicht aneinander angebracht werden.
     


    Revendications

    1. Matériaux d'intérieur (100) destinés à être fixés sur une surface externe d'un moule pour injection de plastique (200) et à exposer à l'extérieur, la lumière sélectivement émise par une source lumineuse placée dans le moule pour injection de plastique, les matériaux d'intérieur comprenant :
    une couche à motif de bois (110) formée de bois naturel et présentant une pluralité de premiers orifices d'éclairages à travers lesquels la lumière sélectivement émise par la source lumineuse passe, caractérisé en ce qu'ils comprennent en outre :

    une couche de blocage de la lumière (120) couplée à une surface arrière de la couche à motif de bois (110), bloquant la lumière et présentant une pluralité de deuxièmes orifices d'éclairages formés à l'intérieur de celle-ci correspondant respectivement à la pluralité de premiers orifices d'éclairages et

    une électrode de détecteur tactile (130) couplée à une surface arrière de la couche de blocage de la lumière (120) et contrôlant le fonctionnement d'une fonction préréglée par le toucher et présentant une pluralité de troisièmes orifices d'éclairage formés à l'intérieur de celle-ci correspondant respectivement à la pluralité de deuxièmes orifices d'éclairage.


     
    2. Procédé de fabrication de matériaux d'intérieur (100) qui sont fixés à une surface externe d'un moule pour injection de plastique (200) et exposent à l'extérieur la lumière sélectivement émise par une source lumineuse placée dans le moule pour injection de plastique, le procédé comprenant :

    (A) la préparation d'une couche à motif de bois (110),

    (B) le couplage d'une couche de blocage de la lumière (120) à une surface arrière de la couche à motif de bois, où la couche de blocage de la lumière est formée d'un matériau bloquant la lumière,

    (C) l'impression d'une électrode de détecteur tactile (130) sur la surface arrière de la couche de blocage de la lumière, où l'électrode de détecteur tactile contrôle par le toucher le fonctionnement d'une fonction préréglée et

    (D) la formation d'une pluralité d'orifices d'éclairage qui passent à travers la couche à motif de bois (110), la couche de blocage de la lumière (120) et l'électrode de détecteur tactile (130), où la lumière sélectivement émise par la source lumineuse passe à travers la pluralité d'orifices d'éclairage.


     
    3. Procédé selon la revendication 2, caractérisé en ce que, dans l'opération (B), la couche à motif de bois et la couche de blocage de la lumière sont fixées l'une à l'autre par un procédé thermofusible en prévoyant un tissu non tissé recouvert d'un adhésif mélangé avec du polyéther et du polyester entre la couche à motif de bois et la couche de blocage de la lumière.
     




    Drawing











    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description