1331561 九、發明說明： 【發明所屬之技術領域】 本發明是關於一種環保型金屬貼皮方法及其結構，可使用於 電子產品外殼或建材的裝飾金躲面，產生多種表面觸感、耐磨、 密著性優良兼具視覺美觀效果之金屬板結構。 【先前技術】 籲 目刖金屬貼皮結構一般都含有PVC皮膜層，pvc皮膜層由於原 料在加工成PVC皮臈的過程中’會因為加熱而產生有毒物質，屬 非％保型材料’且PVC皮膜一般都會添加可塑劑，時間太久會有 可塑劑釋出，改變其原有的物性等缺點，而若要有光滑耐磨的表 面則必須塗佈或接著另外一種材質之樹脂層，如：聚脂系樹脂層 等。 因此，如中華民國專利公告第404888號發明專利案：「一種 樹脂被覆金屬板」，其主要特徵在於：「-金屬材質之基板上，依 序層合塗料層、5〜1G()mm厚之變性烯烴樹脂仙、及 全面印刷層C、細Β、及5〜·mm厚彻聚脂系樹脂薄 膜A而成之氣被覆金屬板；層合概的中間所設之變性婦煙樹 月曰層，與印刷層' 塗料層、聚脂系樹脂薄膜等的接著性優異，故 而即使在深沖等嚴苛加卫下，構成層界面處的_也不會發生， 具優異之加工密著性。 又金屬板表面粗趟或各構成層（樹脂層）的凹凸，係由變性 1331561 烯烴層所吸收，因此，作為樹脂被覆金屬板，可獲得優異的鮮映 性，此種結構的加工方式其滾壓過程繁瑣，又由兩種材質之樹脂 層組合，加工過程較不單一化，且變性烯烴有的是非環保材料， 係其主要缺失。 有鑑於習見塗覆樹脂的金屬板片仍有上述缺失，發明人乃針 對該些缺點研究改進之道，終於有本發明之產生。 • 【發明内容】 本發明旨在提供一種環保型金屬貼皮方法及其結構，其金屬 基板上塗覆-接著劑層、—皮膜層，藉由聚氨g旨層易與接著劑層 結合’使該皮膜層與金屬基板具有優良的密著性，係本發明之主 要目的。 依本發明之此-環制金屬貼皮方法及其結構，其中聚氨醋 材質本身具有優良的耐磨性，柯的表面概、耐磨、密著性優 φ良兼具美觀的功效，而此種聚氨醋樹醋材質單—化、型態多變化， 屬環保材料，加卫容易，為本發明之另一目的。 為達成上述目的，本發明之此—環保型麵貼皮方法及其結 構’其主要包括：金屬基板、接著及細層等部份，一金屬 板上塗覆-接著劑層後再行供烤，復將一由聚氨醋面層及聚氨醋 底層組成的皮膜層置於該接著劑層上，直接以滾輪滾壓使之结 合’然後冷卻成型’藉由聚魏料與接著_結合使該皮膜 層與該金屬基板具有優良的密著性、财磨之特性，且聚氨醋皮膜 1331561 層可產生多種表面觸感及視覺美觀效果之金屬貼皮結構。 至於本發明之詳細構造，運用原理與產生之功效則參照下列 依圖示之說明’即可達到完全之瞭解： 【實施方式】 第1圖係本發明之成型方法流程圖，由該圖可以很明顯地看 出，本發明之加工流程主要包括叶塗佈接著劑」1〇、「烘烤加熱」 11貼覆皮膜層」12、「滾壓結合」13、及「冷卻成型」14等步 驟；其中「塗佈接著劑」步驟10，係於一金屬基板工之至少一側 表峨覆—層接著劑層2，❿「烘烤加熱」步驟11，則係加熱該 接著劑層2至14G〜21G°C之間，使該接著劑層2適當軟化，而「貼 覆皮膜層」12係將—越層3 :此仙—聚氨g旨底層3卜聚氨醋 面層32依序層疊結合而成，將此皮膜層3貼覆在前述接著劑層2 上’=、「滾壓結合」步驟13，則係藉由一鏡面滾輪，其溫度保持 於至溫加熱至職之間，將前述皮膜層3滾壓層合於該接著劑 層2上’又「冷卻賴」步驟14，_冷卻該金屬貼皮使接著劑 層2及聚氨酯底層31 '聚氨酿面層32層合構成 基板1得以⑽結合。 n屬 。月參閱第2 ® ’係本發明之結構剖面圖，由 :執^金屬基板i為-金屬貼皮之基本材料，可為電鍍鋅鋼 、、'讀辞鋼板、冷軋鋼板、不錄鋼板、純、_合金及銘 1331561 錳合金、及/或其上經皮膜處理過的金屬板材，依照不同用途而 選擇’如用在電子裝置殼體，一般以質輕強度佳之金屬鋁板較適 '當；接著劑層2成份可為聚酯樹脂、亞克力樹脂及聚氨酯樹脂， '如前所述’先以接著劑層2適當厚度塗覆於前述金屬基板1之至 少一側表面，並加熱至14〇〇c〜21(TC之間，使該接著劑層2適當 軟化；而皮膜層3更包括：一聚氨酯底層31、一聚氨酯面層32 依序層疊結合而成，使該皮膜層3貼置於接著劑層2上，以聚氨 # 酯底層31使與接著劑層2相接觸，復以一室溫加熱至180¾之間 的鏡面滚輪滾壓然後冷卻，使該皮膜層3藉接著劑層2與金屬基 板1密著結合。 上述皮膜層3巾’由於聚氨自旨面層32可依不同方組成，及 製程不_林_表面_ (如：材f 多變化、紋路、光 月表面效果等）’而聚氨醋底層31也可以用聚氨醋發泡層代替， 增_感’亦可用聚氨醋印刷層代替，使具有美觀的功效，而聚 # _曰面層32或聚氨醋底層31也可加金屬粉末（如：銘粉等）、珠 光粉或顏料任何—種以上’來增加視覺域而金屬基板丄斑皮 ^中的聚氨賴31之間的接著劑層2，可使其具有穩定之 谘者效果。 以下輔以實驗’說明本發明構造所能達成之功效： 實驗一： '1331561 在厚度為0· 5mm的鋁板上，塗佈21 _之聚氨酯樹酯接著劑 層2 ’並烘烤金屬基板1，至板溫為166°C，由聚氨酯底層31為 印刷層作為底層、聚氨g旨面層32為表面光滑的面層結合成的皮膜 層3，以鏡面滚輪滚壓，結果發現剝離強度為8.52N/cm，皮膜 表面有優良的光滑性，百格試驗無任何剝落產生，密著性良好。 實驗二： 在厚度為0.8mra的鋁板上，塗佈32y[/m聚氨酯樹酯的接著劑 層2 ’並烘烤金屬基板1，至板溫為193°C，由聚氨酷底層31為 底層1氨自旨面層32為添加粉，且表面有紋路的面層結合成的 皮膜層3，以加熱之鏡面滾輪滾壓後再給予冷卻，結果發現剝離 強度為13. 82N/Cm，皮膜表面有觸感及視覺美感，百格試驗無任 何剝落產生，密著性良好。 由上述可知，本發明環保型金屬貼皮方法及其結構確實具有 符合環保要求、加工簡易且皮膜層可有不_表面觸感（如：材 質型態多變化、眺、光滑表面效料）、具紐㈣密著性、耐 磨性’亦可產生魏之功效，且皮膜層麟材解—化已具有 產業上之_性、新碰及進步性，符合專利之要件爰依法提 出發明專利申請，騎賜准糊，實為感禱。 准X上所述者，僅為本發明之一較佳實施例而已，並非用來 限疋本發明之實施範圍，即驗本發明帽專機圍所作之均= 1331561 改變或修飾，均應在本發明專利範圍所涵蓋，特先予以陳明。 【圖式簡單說明】 第1圖為本發明之成型方法流程圖。 第2圖為本發明之結構剖面圖。 【主要元件符號說明】 1......金屬基板 2.. ....接著劑 3.. ....皮膜層 3 1......聚氨酯底層 3 2......聚氨酯面層 10……塗佈接著劑 11……烘烤加熱 12……貼覆皮膜層 13……滾壓結合 14……冷卻成型1331561 IX. Description of the invention: [Technical field of invention] The present invention relates to an environmentally-friendly metal skinning method and structure thereof, which can be used for decorative gold hiding of electronic product casings or building materials, and produces various surface touches and abrasion resistance. A metal plate structure with excellent adhesion and visual aesthetic effects. [Prior Art] The metal veneer structure of the eye-catching metal generally contains a PVC film layer. The pvc film layer is a non-% conformal material due to the raw material in the process of processing into a PVC skin defect. The film is usually added with a plasticizer. If the plasticizer is released for a long time, it will change its original physical properties. If there is a smooth and wear-resistant surface, it must be coated or followed by another resin layer, such as: A polyester resin layer or the like. Therefore, for example, the invention patent of Patent No. 404888 of the Republic of China: "a resin-coated metal plate", the main feature of which is: "on a metal substrate, the coating layer is sequentially laminated, 5 to 1 G () mm thick A gas-coated metal sheet obtained by denaturation of an olefin resin, a full-printing layer C, a fine-grained layer, and a 5 mm-thick polyester resin film A; a denatured smoky tree layer in the middle of the layering Since it has excellent adhesion to the printed layer, the coating layer, and the polyester resin film, even if it is severely protected by deep drawing, etc., the _ at the interface of the layer does not occur, and the processing adhesion is excellent. The rough surface of the metal plate or the unevenness of each constituent layer (resin layer) is absorbed by the denatured 13351561 olefin layer. Therefore, excellent metallographic properties can be obtained as a resin-coated metal plate, and the processing method of this structure is rolled. The process is cumbersome, and the resin layers of the two materials are combined, the processing process is not singular, and the denatured olefins are non-environmentally friendly materials, which are mainly missing. In view of the fact that the resin coated metal sheets still have the above-mentioned defects, the invention The present invention has been made in view of the improvement of these disadvantages. The present invention is directed to an environmentally friendly metal skinning method and structure thereof, which are coated on a metal substrate with an adhesive layer, a film. The layer is easily bonded to the adhesive layer by the layer of polyurethane, and the film layer and the metal substrate have excellent adhesion, which is the main object of the present invention. The ring metal coating method according to the present invention Its structure, in which the polyurethane material itself has excellent wear resistance, the surface of the ke, the wear resistance, the adhesion is excellent, and the appearance is good, and the polyurethane vinegar material is single-type, The change of state is environmentally friendly material, and it is easy to add, which is another object of the present invention. In order to achieve the above object, the environmentally friendly surface skinning method and structure thereof of the present invention mainly include: a metal substrate, followed by fine a layer and the like, a metal plate is coated with an adhesive layer and then baked, and a film layer composed of a polyurethane face layer and a polyurethane bottom layer is placed on the adhesive layer, directly rolled by a roller. Press to combine 'and then cold Molding's combination of the film and the film to provide excellent adhesion and sharpness to the metal substrate, and the 13315561 layer of the polyurethane film can produce a variety of surface touch and visual aesthetic effects. As for the detailed structure of the present invention, the principle of operation and the effect of the production can be fully understood by referring to the following description of the drawings: [Embodiment] FIG. 1 is a flow chart of the molding method of the present invention, As is apparent from the figure, the processing flow of the present invention mainly includes a leaf coating adhesive "1", "baking heating" 11 coating film layer 12, "rolling bonding" 13, and "cooling molding". Step 14; wherein the "coating agent" step 10 is performed on at least one side of a metal substrate to form a layer of an adhesive layer 2, and the "baking heating" step 11 is to heat the layer of the adhesive layer. Between 2 and 14 G to 21 G ° C, the adhesive layer 2 is suitably softened, and the "adhesive film layer" 12 will be - the layer 3: the immortal - the polyaluminum g is the bottom layer 3 - the polyurethane face layer 32 Laminated in order, and the film layer 3 is pasted Then, the '=, "rolling and bonding" step 13 on the agent layer 2 is performed by a mirror roller, the temperature of which is maintained between the temperatures and the heating, and the film layer 3 is rolled and laminated on the adhesive layer. 2, 'and 'cooling down' step 14, _cooling the metal skin to laminate the adhesive layer 2 and the polyurethane underlayer 31' polyurethane layer 32 to form the substrate 1 to be bonded (10). n is a genus. Referring to the 2nd ® 'section of the structure of the present invention, the metal substrate i is the basic material of the metal veneer, which may be an electrogalvanized steel, a 'reading steel plate, a cold-rolled steel plate, a non-recorded steel plate, Pure, _ alloy and Ming 13351561 manganese alloy, and / or its percutaneous film treated metal sheet, according to different purposes to choose 'if used in electronic device housing, generally good quality and light strength of the metal aluminum plate is appropriate'; The composition of the layer 2 may be a polyester resin, an acryl resin, and a urethane resin, and is applied to at least one surface of the metal substrate 1 with a suitable thickness of the adhesive layer 2 as described above, and heated to 14 〇〇. C~21 (between TC, the adhesive layer 2 is appropriately softened; and the film layer 3 further comprises: a polyurethane underlayer 31 and a polyurethane surface layer 32 which are sequentially laminated and laminated, so that the film layer 3 is attached to the film layer 3 On the agent layer 2, the polyimide layer 22 is brought into contact with the adhesive layer 2, and is heated by a mirror roller heated at room temperature to 1803⁄4 and then cooled, so that the film layer 3 is adhered to the adhesive layer 2 and The metal substrate 1 is bonded tightly. The above film layer 3 is made of polyurethane The surface layer 32 can be composed of different sides, and the process is not _林_surface_ (such as: material f multi-change, grain, light moon surface effect, etc.) and the polyurethane bottom layer 31 can also be used polyurethane foam layer Instead, the _ Sense' can also be replaced with a polyurethane printing layer to make it have an aesthetic effect, and the poly _ 曰 surface layer 32 or the polyurethane bottom layer 31 can also be added with metal powder (such as: Ming powder, etc.), pearl powder Or the pigment layer 2 between the pigments to increase the visual field and the polyurethane layer 31 in the metal substrate freckle skin can have a stable advisory effect. The effect that the structure can achieve: Experiment 1: '1331561 On the aluminum plate with a thickness of 0.5 mm, apply 21 _ urethane resin adhesive layer 2 ' and bake the metal substrate 1 to a plate temperature of 166 ° C, The film layer 3 in which the polyurethane underlayer 31 is a printed layer as a primer layer and the surface layer 32 of a polyurethane is a surface having a smooth surface is rolled by a mirror roller, and as a result, it is found that the peel strength is 8.52 N/cm, and the surface of the film is excellent. The smoothness, the hundred-square test did not produce any peeling, and the adhesion was good. Two: 32y [/m polyurethane resin adhesive layer 2' is coated on an aluminum plate having a thickness of 0.8 mra and the metal substrate 1 is baked to a plate temperature of 193 ° C, and the polyurethane bottom layer 31 is the bottom layer 1 The surface of the film is a surface layer of the surface layer 32 which is added with a powder and a surface layer having a grained surface, and is heated by a heated mirror roller and then cooled, and the peel strength is 13.82 N/cm. The touch and visual beauty, the Baige test has no peeling and good adhesion. It can be seen from the above that the environmentally friendly metal skinning method and the structure of the invention have the requirements of environmental protection, the processing is simple, and the film layer can have no surface. Touch (such as: material type changes, 眺, smooth surface effect), with New (four) adhesion, wear resistance can also produce Wei's effect, and the film layer of lining solution - chemical has been industrial _ Sex, new touch and progressive, in line with the requirements of the patent, filed an invention patent application according to law, and gave a prayer to the pray. The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the change of the uniform of the cap of the present invention = 1331561, which should be changed or modified. Covered by the scope of the invention patent, it is first stated. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flow chart of a molding method of the present invention. Figure 2 is a cross-sectional view showing the structure of the present invention. [Description of main component symbols] 1...metal substrate 2......adhesive 3......film layer 3 1...polyurethane bottom layer 3. 2..... Polyurethane top layer 10... Coating adhesive 11... Baking heating 12... Coating film layer 13... Rolling bonding 14... Cooling molding