201022013 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種裝飾膜片、應用裝飾膜片之模内 裝倚製程之製品及其成型製程，尤指-種利用多層光學膜 中不同膜層之折射率差異而達成具有顏色隨著視角而變 化的模内裝飾成型製程及其製品。 . • 【先前技術】 模内裝飾成型技術(In Mold Decoration / Forming， IMD)則被開發並大量應用於塑膠表面的改質工程，模内裝 飾成型技術現廣泛應用在電子產品、家電、汽機車等外觀 件中’ IMD技術又可細分為IMR，IML，IMF等，其主要包 括印刷（Printing)、成型（F〇ming)與射出（Molding)等三個製 程。但習知的模内裝飾成型技術運用在製作具有炫麗外殼 的鏡面或變色效果時，必須在基材表面塗佈一層或多層的 ❹金屬或顏料圖層，而若需要達成依不同視角改變不同顏色 之效果’更需要運用多層療鍛的方式加以製作，但上述製 程之成本高且該金屬鍍層的延展性差，使得該模内裝飾成 型製程的良率低，同時也無法提升整體的產品品質。 習知有一種多層光學膜是用於讓某波長區段的光通 過，並讓其他波長區段的光反射的光學元件。在美國專利 3,610,729號中提到由雨種光學層彼此疊加而成的多層光 學膜，上述之兩種光學層的材質為折射率相異的聚合物。 藉由兩種聚合物彼此間的折射率之差異，可使入射光產生 201022013 建設性干涉（constructive interference)。藉此，多層光學膜 • 可讓特定波長的光通過，而讓其他波長的光反射。 . 一般來說，在多層光學膜中，其光學層為四分之一波 膜堆（quarter wave stack)，四分之一波膜堆是指：該光學声 的光學厚度（optical thickness)為所對應波長的四分之一， 而光學厚度則為該光學層的厚度與其折射率的乘積。 美國專利5,976,424號中提到一種多層光學膜的製作 % 方法，其製作流程如下：首先，提供一第一樹脂和一第二 樹脂；接著，擠出所述第一樹脂和第二樹脂使之成為一樹 脂流(resin stream)，所述樹脂流包括多層且具有一第一主 表面（major surface)和一第二主表面，其中所述多層中的至 少一些層包括第一樹脂，而所述多層中的至少另一些層包 括第二樹脂，層厚小於k微米且設置在所述第一表面400 微米之内的層數為m，層厚小於k微米且設置在所述第二 表面400微米之類的層數為η，m> η，1〇 ;再來，貼 • 著一澆注表面澆注所述樹脂流，致使所述第一表面與所述 澆注表面接觸。 緣是，本發明人有感上述多層蒸鍍與金屬塗佈膜之缺 失，故利用多層光學膜的設計原理的應用以修改使其能讓 有炫麗外觀且可隨視角而變化顏色的效果應用於膜内裝 飾的製品。 【發明内容】 本發明之主要目的，在於提供一種裝飾膜片、應用裝 201022013 具有ί飾製程之製品及其成型製程’該裝飾膜片 f程^合古故非常適合應用於模内裳飾膜片之成型 二二不=的問題；另一方面，該裝飾膜片中之多 予膜之不同材質的膜層間至少有-方向具有光學之 =射率差，使得最終產品具有相當炫麗的顏色，同時可根 據不同視角而產生顏色的變化。 膠美提供7種裳飾膜片’包括一具有成型性之塑 二传為兩：置於5亥塑膠基材上之多層光學膜，該多層光 予膜係為兩種以上之聚酷好粗私黑人π上、 料的膜層之間至少有’f不同聚㈣ 該多層先學膜具有炫麗外觀或隨視角ί顏差二 定一:面置::多層光學膜上之保細，該保護膜片具-預 本=月係提供一種應用裝飾膜片之模内裝飾之成型 貼步驟：步驟―··提供—塑膠基材，·步驟二： 學膜俜^雨^予膜於5亥塑膠基材的上表面，其中該多層光 二上之聚醋材料所疊合形成，且不同聚酯材 ' 、間具有一預定值之折射率差；步驟三：貼人一 仙—）於該多層光學膜的上心以建構成 飾膜片成2的裝飾膜片；步驟四：將該具可成型性的裝 預定形狀；以及步驟五··成型並貼合一塑 ’、；μ預疋形狀之裝飾膜片的該塑膠基材之下表面。 型製ΐ發提供另—種應用裝飾膜片之模内裝飾之成 尘U，包括以下步驟：步驟一：將一塑谬基材、多層的 201022013 土聚酯材料之聚酯材料膜及-保護膜片以共押出 逢"形成一押出多層膜；步驟二：將該押出多展膜進 伸以建構成一具可成型性嶋膜片，且由多層 =材料膜所組成之多層光學膜經由軸向延伸後具有一 折射率差：步驟三：將該具可成型性的裝飾膜片 成=為-預定形狀；以及步驟四：成型並貼合—塑料於該 預定形狀之裳飾膜片的該塑膠基材之下表面。 、〆 。明更提出一種上述之模内裝飾成型製程之製 :壯〇 . H以及―設置於該_上之具可成型性 f飾膜片，其中該裝飾膜片包括：-塑膠基材；一設置 ^亥=基材上之多層光學膜，該多層光學膜係為兩種以 =-醋材料所疊合形成，且不同聚醋材料的膜層之間且 有一職值之折射率差；其光學設計如上所述多層光學膜 斗共擠出後經拉伸後其折射率差愈大其在預設 波&效果愈大’折射率差該至少為0.17，最佳者則為 光學^之㈣㈣；保護膜片 曰、’ β拉伸後八表面硬度會增加為至少2H。 有以下有益的效果：本發明躺—種多層光 j於模内$飾膜片與其成型製程，該多層光學膜之不同 =的臈層具有折射率差，故在光學上會產生建設性的干 :反射效果’故其製品之外觀可產生炫麗的顏色外觀表 現0 為使犯更進-步瞭解本發明之特徵及技額容，請參 以下有關本發明之詳細糾與關，然而所_式僅提 201022013 供參考與說明用，並非用來對本發明加以限制者。 【實施方式】 請參閱第一圖及第二圖，本發明係提供一種應用裝飾 膜片之模内裝飾成型製程（In Mold Decoration / Forming， IMD )，該模内裝飾成型製程將具有一折射率差值且成型性 佳的多層光學膜應用於如手機外殼等電子產品之殼體的 參應用範疇，使上述電子產品之外殼會隨著使用者之視角不 同而產生顏色變化或鏡面反射的效果，而本發明提出兩種 實施方法以將該多層膜應用於模内裝飾成型製程，第一實 施方法包括如下步驟（請同時參考第三圖至第三B圖）： 步驟（一）：提供一塑膠基材1 〇，該塑膠基材1 〇 主要為一種光學膜片，其具有良好的成型性，例如聚對苯 -—曱酸乙'一醇醋（Polyethylene Terephthalate，PET )、聚碳 酸脂（Polycarbonate，PC )、三醋酸纖維素（Tri_acetyl Cellulose ’ TAC)、聚甲基丙烯酸曱酯粒子 (Polymethylmethacrylate ， PMMA) 、 MS 塑膠 (Methylmethacrylate styrene )或環烯共聚物（Cyclic Olefin Copolymer ’ COC)等材質，但不以上述為限。另外在具體 實施例中，該塑膠基材1 0的厚度可根據不同的應用而加 以調整。 步驟（二）：貼合一多層光學膜1 1於該塑膠基材1 0的上表面’其中該多層光學膜1 1係為兩種以上之聚酯 材料所疊合形成（如第三圖所示之第一樹酯膜層1 1 〇及 201022013 第二樹賴層1U)，該聚g旨材料係選自ρΕτ 二 :酸乙二醇叫邮 料的膜層(即第一樹酿膜層110及第 一奶曰膜層1 1 1 )之間具有—财值之折射率差。 而遠多層光學膜1 1係以下列步驟所製作·· Φ ❿ 法以：:：二如上所述兩種以上之聚酯材料經共押出方 法形成父錯排列之多層聚醋材料膜； 材料膜進行轴向(單輛或雙轴)延伸以形成 不同聚酯材料的光學膜層之間至少有一方向具 2之折射率差；其折射率差至少為G17，最佳者為0 29， \可使入射光產生建設性干涉（constructive =ference)。藉此，該多層光學膜工工可讓特定波長的光 波長的光反㈣此謂由此光學膜推設計 形成/、有炫麗外觀且依不同的視角產生顏色變化的效果。 然而，為了使該多層光學膜^具有 適用於模内裝飾成型製程，故多層光學膜“在延^申之= 2入一冷卻區（e°Gling纖），例如進行—冷卻溫度在 ㈣至120c之間，且該冷卻時間為1至5秒間之冷卻步 騍後再進行熱處裡(Heat setting)，使該多層光學膜11具 有較佳的成型性。其為上述之多層光學膜i U進行不^ 的I伸製耘參數後的多層光學膜特性及成型性，1 光學臈之特徵在於： /、 a 1、該多層光學膜1 1在150〇C熱處理3〇分鐘之機械 由方向（MD)熱縮性（shrinkage)與橫軸方向（td)熱 201022013 縮性之比值介於0.8與h2之間。此多層光學膜 徵即為成型性的重要指標，藉由本發明所提出的製輕可以 將多層鮮膜1 1在機械軸方向與橫軸方向的埶 ❿ 相田接近，使仟该膜層在經過熱成型步驟，如古 射出成型後，在兩個方向上的尺寸不會產生太的 換句話說，當該膜層在射出成型後，在機 棒 :::r接近的尺寸，如此即可大幅提高該媒= 2、該膜層之弓形區（b〇wing叫―)小於等於n 其中弓形區係以方程式丨所計算： 方程式1 : 弓形區（bowing region) =(B/W)X 1〇〇%， &上1w為橫軸方向（TD)寬度，B為最大凹陷深度。 二:寺第七圖’在該多層光學膜進行橫軸方向（TD)的延 μ 會產生一個弓形區（bowing region )，該弓形區可由 弓：二方1計算所得，而上述之冷卻區域可以控制該 ^品的冲算值小於等於15% ’並使該臈層在通過橫軸 延伸後可以保持與橫轴方向平行的區域，藉此也使 Ζ、層具有相#均自的熱性質及配向性（orientation 羼方面’減小該弓形區的計算值也可以使該膜 ㈢又佳的熱縮性。另外，表一亦顯示膜層的其他特性， ^該膜層的機械軸方向（廳）熱縮性與橫轴方向（TD) 性之比值介於〇.8與U之間，而最佳係在0.9至L1 12 201022013 在150C、二十分鐘之條件下的熱縮性小於 且弓形區經方程式1計算之後的值最佳 ^ ；⑷1謂’弓形區的控制也是該多層光學膜工 調均勾性的重要指標，如果弓形區大於15%則 先予膜11的外觀會產生色不均的現象，則失去此多 層光學膜1 1的使用特質。 夕步驟（三）：貼合一保護膜片（Skinlayer)12於該 1的ί表面以建構成—具可成型性的裝飾 :高硬度的材質以提供較佳的保護功能，其具有一= 硬度，在本具體實施例中該預定表面硬度至少為Η。 為3J:):將該具可成型性的裝飾膜片10 ◦成型 如第三Β圖所示。在此步驟中，係將該具 延展性即可成龍的裝飾膜 將該裝飾膜片1〇〇f曲成型為所需要的最 :ί:ίΓ，例如利用高壓熱烘或真空成型等製程將該 ::有性的|飾膜片1 ◦◦成型為手機外殼等具有預 卜觀的殼體型態。而在本發明所提出的模内震飾 成iμ中^系應用成型性高且具有延展性的多層光學膜 土 1 ’故當受外力產生變形時，該多層光學膜U仍可以 力”附於_基材10上’而不會發生碎裂 荨le成、，Ό構破壞的情況。 开;狀[五).成型並貼合一塑料2 0於成型為該預定 ^裝飾膜片1Q◦的該塑勝基材1◦之下表面，以製 13 201022013 成模内裝飾成型製程之製品1，如第三B圖。此步驟即是 將上述成型後之裝飾膜片置入射出模具内，而後於該裝飾 膜片之塑膠基材1 〇之下表面進行ABS射出成型一最終 產品（即塑料2 〇 )，並同時將已射出成型之ABS塑料貼 合於該裝飾膜片10 0之塑膠基材i 〇之下表面，而該塑 料2 0可為聚碳酸脂（pC)、聚丙烯㈣外r〇pylene，pp)、 PS塑膠（P〇iystyrene，PS)、聚甲基丙稀酸甲西旨（pMMA)、 MS 塑膠（Methylmethacrylate styrene)、丙烯青丁 二嫌裳 M(ABS)、聚對苯二甲酸乙二醇醋（ΡΕΤ)、聚、祕塑 膠（Polyoxymethylene，ΡΟΜ)、尼龍（Nyl〇n)等材質， 但不以上述為限。 上述之實施方法係將可成型性佳且不同膜層間且 2率差異的多層鮮膜1 1以貼合之方式應用於模内 装飾成型製程，以製作可隨視角不同而產生特殊顏色效果 該塑膠基材10、該多層光學膜11及該保 。隻膜片1 2以貼合的方式製作該裝飾膜片丄◦ 〇。 之本案發明更提供另—種應用該裝飾膜片1 0 0 ^ Μ 飾成型製程（In MGld DeeGmiGn/F嶋_，細） 、貫施方法，第二實施方法之模㈣ 施方法的差里在於，楚一香始十、+ ^ 衣往/、弟貫 〃在於貫财法以共押出之方法取代上 =合步驟。該模内鐵型製程包括以下步驟（請復 多考第一圖及第三圖至第三B圖）： 步驟（一）：將一塑膠基材丄〇、多層的 酯材料之聚S旨材料膜及—保護膜片i 2以共押出方法疊々 14 201022013 押出的方；出。此步驟即是將各個膜層的材料以共 狎出的方式-次性成型，以取代 塑膠基射0係具有良好的可成型性，貼°步驟’其中5亥 延伸以:ϋ“亥押出多層膜進行軸向（單軸或雙軸) =且=成型性的裝飾膜片1㈣（如第三圖 馨 2== —預定值之折射率差， 將上::塑=〇延：提升為至少-。此-步驟 m 4a ^ ^ ^ 兩種以上聚酯材料交錯排列的 所組成的多層光學臈1 1及 伸，以使其中之多層有^進打軸向延 显，使並可^ t 11中的不同膜層間產生折射率差 層特性與上过第的效果。而該多層光學膜11之膜 、上述第一貫施方法相同，故在此不再贅述。 ❹ 步驟（三）：將該具可成型性的 為一預定形狀，如第三A圖所示。 ίϋ〇成型 裝飾:成型並貼合一塑料2〇於該預定形狀之 所』膜片100的該塑膠基材10之下表面，如第三㈣ 實施三;至步驟(四)係相同於前述之第-的步驟（四）至步驟（五），故在此不加以贅述。 飾成=之i:r用上述兩種實施方法製作模内裝 15 201022013 第一實驗組： 貫先本發明可利用第一實施方法製作具有鏡面 (mirror)效果之外殼（即第一種製品）。 步驟（一）：提供一Pc材質之塑膠基Mi 〇 ^ 步驟（二）：貼合—多層光學膜1 1於該塑膠基材1 0的上表面。在此步驟中，係αυν感壓膠將多層光學膜 1 1貼&於PC材貝之塑膠基材1 〇，其中該多層光學膜 1 1係為三百零二層之PEN#f (即第—膜層i i 〇)及 PMMA材質C即第二膜層i i丄）交錯疊合且經由共押出 方法所形成，該多層光學臈1丄的厚度為微米“ π〇。而該多層光學们i再經由雙軸之延伸，其中可以用 逐次雙轴延伸縱向_)延伸2.8倍，橫向（TD)延伸3 5倍 也可以用同時雙軸延伸縱向與橫向延伸3.0倍，而延伸後201022013 IX. Description of the invention: [Technical field of the invention] The present invention relates to a decorative film, a mold-incorporating method for applying a decorative film, and a molding process thereof, in particular, a different type of multilayer optical film The refractive index difference of the film layer is achieved to achieve an in-mold decorative molding process having a color that varies with the viewing angle and an article thereof. • [Prior Art] In Mold Decoration / Forming (IMD) was developed and used in a large number of plastic surface modification projects. In-mold decorative molding technology is now widely used in electronics, home appliances, and steam locomotives. In the appearance of the parts, 'IMD technology can be subdivided into IMR, IML, IMF, etc., which mainly includes three processes of printing, molding and molding. However, the conventional in-mold decoration molding technique is applied to the surface of the substrate by applying one or more layers of base metal or pigment layers when making a mirror or color-changing effect with a dazzling outer shell, and if it is necessary to change the different colors according to different viewing angles. The effect ' needs to be produced by means of multi-layer forging, but the cost of the above process is high and the ductility of the metal coating is poor, so that the yield of the in-mold decoration process is low, and the overall product quality cannot be improved. There is a known multilayer optical film which is an optical element for passing light of a certain wavelength section and reflecting light of other wavelength sections. A multilayer optical film in which the rain optical layers are superposed on each other is mentioned in U.S. Patent No. 3,610,729, the two of which are made of a polymer having a different refractive index. By the difference in refractive indices between the two polymers, incident light can be made into constructive interference in 201022013. In this way, the multilayer optical film • allows light of a specific wavelength to pass, while light of other wavelengths is reflected. Generally, in a multilayer optical film, the optical layer is a quarter wave stack, and the quarter-wave film stack means that the optical thickness of the optical sound is Corresponding to a quarter of the wavelength, and the optical thickness is the product of the thickness of the optical layer and its refractive index. A method for producing a multilayer optical film is disclosed in U.S. Patent No. 5,976,424, which is incorporated in the following manner: First, a first resin and a second resin are provided; and then, the first resin and the second resin are extruded to become a resin stream comprising a plurality of layers and having a first major surface and a second major surface, wherein at least some of the plurality of layers comprise a first resin and the plurality of layers At least some other layers include a second resin having a layer thickness of less than k microns and having a number of layers within 400 microns of the first surface being m, a layer thickness of less than k microns, and being disposed at the second surface of 400 microns The number of layers of the class is η, m > η, 1 〇; again, the resin stream is cast on a casting surface such that the first surface is in contact with the casting surface. The reason is that the present inventors are aware of the above-mentioned lack of multi-layer evaporation and metal coating film, so the application of the design principle of the multilayer optical film is modified to enable the effect of having a dazzling appearance and changing the color depending on the viewing angle. In-film decorative products. SUMMARY OF THE INVENTION The main object of the present invention is to provide a decorative film, an application of the product 201022013, and a molding process thereof. The decorative film is very suitable for use in an in-mold film. The problem of forming the film is not the same; on the other hand, the film of different materials of the plurality of films in the decorative film has at least the optical direction of the difference between the film layers, so that the final product has a rather dazzling color. At the same time, color changes can be produced according to different viewing angles. Jiaomei offers 7 kinds of slitting membranes, including a plastic molding machine with two moldings: a multi-layer optical film placed on a 5 liter plastic substrate, which is more than two kinds of cool film. The black man has at least 'f different poly' between the film layers of the material (4). The multi-layer first film has a dazzling appearance or a different angle of view with the viewing angle: face setting:: the thickness of the multilayer optical film, the protective film具-前本=月系 provides a molding step for applying the decorative film to the in-mold decoration step: Step--·Providing—Plastic substrate, Step 2: Learning film 俜^rain^Pre-filming at 5 hp plastic substrate The upper surface, wherein the polyester material on the multilayer light is superposed, and the different polyester materials have a refractive index difference of a predetermined value; and the third step: attaching a fairy-) to the multilayer optical film The upper part is to construct a decorative film which constitutes the decorative film into 2; the fourth step: the predetermined shape of the moldable shape; and the step 5··forming and fitting a plastic film of the 'pre-cut shape'; The lower surface of the plastic substrate of the sheet. The type of braid provides a further application of the decorative film to the interior of the mold, and includes the following steps: Step 1: a plastic substrate, a multi-layered polyester film of 201022013 soil polyester material and - protection The film is formed by a co-extrusion of a multi-layer film; step 2: the extrusion film is stretched to form a pliable film, and the multilayer optical film consisting of a plurality of layers of material film is passed through After the axial extension, there is a refractive index difference: Step 3: forming the moldable decorative film into a predetermined shape; and Step 4: forming and fitting the plastic in the predetermined shape of the slitting film The lower surface of the plastic substrate. , 〆. Ming also proposes a system for the above-mentioned in-mold decoration molding process: Zhuang Yu. H and the moldable f-finished film disposed on the _, wherein the decorative film comprises: - a plastic substrate; a setting ^ HI = multilayer optical film on a substrate, the multilayer optical film is formed by laminating two kinds of vinegar materials, and the refractive index difference between the layers of different polyester materials has a value; optical design As described above, after the multi-layer optical film bucket is coextruded, the larger the refractive index difference after stretching, the greater the effect of the predetermined wave & the refractive index difference is at least 0.17, and the best is optical (4) (four); The protective film 曰, 'the hardness of the eight surfaces after β stretching will increase to at least 2H. The invention has the following beneficial effects: the invention has a multi-layered light j in the in-mold and a molding process, and the different layers of the optical film have a refractive index difference, so that the optically constructive dry : reflection effect 'so the appearance of the product can produce dazzling color appearance performance 0 In order to make the crime more advanced - to understand the characteristics and technical capacity of the present invention, please refer to the following detailed description of the invention, however The use of the present invention is for reference only, and is not intended to limit the invention. [Embodiment] Referring to the first figure and the second figure, the present invention provides an In Mold Decoration / Forming (IMD) process using a decorative film, which has a refractive index. A multilayer optical film having a difference and good moldability is applied to a reference application of a casing of an electronic product such as a mobile phone case, so that the outer casing of the electronic product may have a color change or a specular reflection effect depending on a user's viewing angle. The present invention proposes two implementation methods for applying the multilayer film to an in-mold decorative molding process. The first embodiment includes the following steps (please refer to the third to third B drawings at the same time): Step (1): providing a plastic Substrate 1 〇, the plastic substrate 1 〇 is mainly an optical film, which has good moldability, for example, Polyethylene Terephthalate (PET), Polycarbonate (Polycarbonate) , PC ), Tri-acetyl Cellulose ' TAC, Polymethylmethacrylate (PMMA), MS Plastic (Methylmetha Crylate styrene or Cyclic Olefin Copolymer 'COC), but not limited to the above. In addition, in a specific embodiment, the thickness of the plastic substrate 10 can be adjusted according to different applications. Step (2): laminating a multilayer optical film 11 on the upper surface of the plastic substrate 10, wherein the multilayer optical film 11 is formed by laminating two or more kinds of polyester materials (such as the third figure) The first tree ester film layer 1 1 〇 and the 201022013 second tree layer 1U) are selected from the group consisting of ρΕτ 2: acid glycol called a mail layer (ie, the first tree mulch film) There is a refractive index difference between the layer 110 and the first milk layer film layer 1 1 1 ). The far multi-layer optical film 11 is produced by the following steps: Φ ❿ method::: Two or more polyester materials as described above are co-extruded to form a multi-layered polyester film of the parental arrangement; Performing an axial (single or biaxial) extension to form a refractive index difference between at least one of the optical film layers of different polyester materials; the refractive index difference is at least G17, and the optimum is 0 29, \ Constructive interference (constructive =ference) of incident light. Thereby, the multilayer optical film worker can make the light of the wavelength of the light of a specific wavelength inverse (4), which is an effect of designing the optical film by the optical film, having a dazzling appearance and producing a color change according to different viewing angles. However, in order to make the multilayer optical film suitable for the in-mold decoration molding process, the multilayer optical film "is extended to 2 into a cooling zone (e°Gling fiber), for example, - cooling temperature is in (four) to 120c And the cooling time is between 1 and 5 seconds, and then the heat setting is performed to make the multilayer optical film 11 have better moldability. The multilayer optical film i U is used for the above-mentioned multilayer optical film i U The characteristics and formability of the multilayer optical film after the 耘 parameter is extended. 1 The optical 臈 is characterized by: /, a 1, the multilayer optical film 1 is heat treated at 150 〇C for 3 minutes by mechanical direction (MD) The shrinkage ratio between the shrinkage and the horizontal axis direction (td) heat 201022013 is between 0.8 and h2. This multilayer optical film sign is an important index of formability, and the lightness of the invention can be achieved by the present invention. The multi-layer fresh film 1 is close to the 埶❿ phase in the direction of the machine axis and the direction of the horizontal axis, so that the film is not subjected to a change in the two directions after the thermoforming step, such as the ancient injection molding. In other words, when the film is formed after injection molding, it is on the stick: ::r close to the size, so that the medium can be greatly improved = 2. The arcuate region of the film (b〇wing is called ") is less than or equal to n where the arcuate region is calculated by the equation :: Equation 1: Bowing (bowing Region) = (B/W)X 1〇〇%, &1;1w is the horizontal axis direction (TD) width, B is the maximum concave depth. 2: Temple 7th image 'in the horizontal axis direction of the multilayer optical film ( The delay μ of TD) will produce a bowing region, which can be calculated from the bow: two sides, and the above cooling region can control the calculated value of the product to be less than or equal to 15% 'and make the 臈The layer can maintain a region parallel to the horizontal axis direction after extending through the horizontal axis, thereby also making the layer and the layer have the thermal properties and alignment of the phase (the orientation ' aspect can also reduce the calculated value of the arcuate region. The film (3) is also excellent in heat shrinkability. In addition, Table 1 also shows other characteristics of the film layer. ^ The ratio of the mechanical axis direction (office) heat shrinkage to the horizontal axis direction (TD) of the film layer is between 〇 Between .8 and U, and the best is between 0.9 and L1 12 201022013 at 150C, twenty minutes of heat The value is less than and the value of the arcuate region calculated by Equation 1 is the best ^; (4) 1 means that the control of the arcuate region is also an important index of the uniformity of the multi-layer optical film. If the arcuate region is greater than 15%, the appearance of the film 11 is preliminarily If the color unevenness occurs, the use characteristics of the multilayer optical film 11 are lost. Step (3): A protective film (Skinlayer) 12 is attached to the surface of the 1 to form a formability. The decoration: a high hardness material to provide a better protection function, having a = hardness, which in the specific embodiment is at least Η. 3J:): The formable decorative film 10 is formed as shown in the third figure. In this step, the decorative film 1〇〇f is formed into a desired shape by using a decorative film which is ductile and can be used, for example, by a high pressure heat drying or vacuum forming process. :: Sexual | Decorative film 1 ◦◦ Formed into a shell shape such as a mobile phone case. However, in the in-mold vibration of the present invention, the multi-layer optical film soil having high formability and ductility is applied, so that when subjected to deformation by an external force, the multilayer optical film U can still be attached to _Substrate 10 on the 'without the cracking 荨le into, and the Ό structure is broken. Open; shape [5]. Forming and laminating a plastic 20 in the formation of the predetermined ^ decorative film 1Q◦ The plastic substrate is 1 ◦ under the surface, to make 13 201022013 into the mold molding process of the product 1, such as the third B. This step is to put the formed decorative film into the mold, and then ABS injection molding a final product (ie, plastic 2 〇) on the surface of the plastic substrate 1 of the decorative film, and simultaneously bonding the formed ABS plastic to the plastic substrate of the decorative film 10 i 〇 under the surface, and the plastic 20 can be polycarbonate (pC), polypropylene (four), external r〇pylene, pp), PS plastic (P〇iystyrene, PS), polymethyl methacrylate pMMA), MS plastic (Methylmethacrylate styrene), propylene green butyl scent M (ABS), polyethylene terephthalate Vinegar (ΡΕΤ), poly, secret plastic (Polyoxymethylene, ΡΟΜ), nylon (Nyl〇n) and other materials, but not limited to the above. The above implementation method is good formability and different film layers and 2 rate difference The multi-layer fresh film 1 1 is applied to the in-mold decoration molding process in a laminating manner to produce a plastic substrate 10 which can produce a special color effect depending on the viewing angle, the multilayer optical film 11 and the protective film. The decorative film sheet is produced by laminating. The invention of the present invention further provides another method for applying the decorative film 1 0 0 ^ 饰 molding process (In MGld DeeGmiGn/F嶋_, fine), a method of applying, The second method of implementation (4) The difference between the methods is that Chu Yixiang begins with ten, + ^ clothing to /, and the younger brother is in the method of co-injection to replace the upper = combined step. Including the following steps (please repeat the first picture and the third picture to the third B picture): Step (1): a plastic substrate, a multi-layered ester material, a material film and a protective film i 2 in the co-extrusion method stacked 14 201022013 extruded party; out. This step The material of each film layer is formed in a co-extrusion manner, in order to replace the plastic base film, the 0 system has good formability, and the step of the step of '5 延伸 extends to: ϋ 亥 亥 多层 多层 多层 多层 多层 多层Directional (uniaxial or biaxial) = and = formable decorative diaphragm 1 (four) (such as the third figure Xin 2 == - the refractive index difference of the predetermined value, will be:: plastic = delay: promoted to at least - this - Step m 4a ^ ^ ^ Two or more kinds of polyester materials are staggered and composed of a plurality of layers of optical 臈 1 1 and stretched so that the plurality of layers thereof are axially extended, so that the difference between The refractive index difference layer characteristics and the first effect are produced between the film layers. The film of the multilayer optical film 11 and the first method of the first embodiment are the same, and therefore will not be described again. ❹ Step (3): The moldability is a predetermined shape as shown in the third A diagram. Ϋ〇 molding decoration: forming and fitting a plastic 2 to the lower surface of the plastic substrate 10 of the film 100 of the predetermined shape, as in the third (four) implementation three; to the step (4) is the same as the foregoing Steps (4) to (5) of the first step are not described here. I=r is made into the in-mold by the above two methods. 201022013 First experimental group: According to the first embodiment, the first embodiment can be used to fabricate a housing having a mirror effect (ie, the first product). . Step (1): providing a Pc material plastic base Mi 〇 ^ Step (2): laminating - a multilayer optical film 1 1 on the upper surface of the plastic substrate 10. In this step, the multilayer optical film 11 is attached to the plastic substrate 1 of the PC material, and the multilayer optical film 11 is a PEN#f of 300 layers (ie, The first film layer ii 〇) and the PMMA material C, that is, the second film layer ii 丄) are alternately laminated and formed by a co-extrusion method, and the thickness of the multilayer optical 臈 1 为 is micrometer “π〇. Then, through the extension of the biaxial, wherein the longitudinal biaxial extension longitudinal direction _) can be extended by 2.8 times, the lateral (TD) extension by 35 times can also be extended by the simultaneous biaxial extension longitudinal and lateral extension by 3.0 times, and after extension
之歷膜層與PMMA膜層的折射率差約為0.26，且兩膜 層在押出的厚度比為1/M65，故在厚度有梯度變化。 々驟（二）：將PMMA之保護膜片1 2貼合於該多層 光學膜1 1的上表面，該PMMA之保護膜片工2為一高 硬度的材質以提供較佳的保護功能續 型及射出的製程以Μ電子產品之外殼後再如後續的成 利用第二實施方法製作具有鏡面㈤贿）效 果之外威.將PC材質之勉朦η 材1 〇、ΡΕΝ材質與 ρμμα 材I及ΡΜΜΑ之保護膜月彳9 四層的lG5G/^in厚之|飾膜片/彳法製作二百零 7 Μ 射⑽财之保護膜片 尽度為4〇/zm’Pc^質之塑夥基材10的厚度為 16 201022013 750 μ m，而本第一實驗組所使用之保護膜片丄2係使用改 質過的PMMA材料，在經由上述的拉伸配向之後，其硬 度可至少為2H ’以有效提升保護之功效。第四圖則顯示 上述製品之反射頻譜圖，其反射波段落於可見光區，因此 在正視角時（零度）係呈現全反射之鏡面外觀，而隨著視 角變小，反射波段會往短波段偏移，故例如視角為6〇度 時，該製品有偏淡藍色的色彩表現。 第二實 本發明可利用第一實施方法製作具有變色效果之外 殼（即第二種製品）。在本實驗組中係利用二百一十八層 之:MMA材質（即第一膜層1 1 〇)及COPEN材質^ 第一膜層1 1 1 )交錯疊合且經由共押出方法形成2心 m之多層光學膜！ i，該多層光學膜丄1Jt經由雙軸之延 伸’其中逐次延伸縱向（MD)延伸3.Q倍，橫向仰)延伸D 倍，也可以用同時雙軸延伸縱向與横向延伸3 2倍,再將上 1貼合於塑膠基材1 〇，同時將保護作 用之保濩膜片1 2貼合於該多層光學膜i 1之上。 本實驗組亦可利用第二實施方法將㈣ =EN材㈣ρμμα„·€μ12以共押出方法 二十層的裝飾膜片100 ’之後進行軸向拉伸、 201022013 現 ======= 第三實驗組： 本發明可利用第一實施方法製作具有變色效果之外 冗又（即第二種製品）。在本實驗組中係利用二百四十七層 之麵八材質（即第一樹酯膜層1 1 0 )及COPEN材^ ❹（即第二樹S旨膜層1 1 1 )冑錯疊合且經由共押出方法形 成230/zm之多層光學膜1 1，該多層光學膜1 i更經由 雙軸之延伸’其中逐次雙軸延伸縱向延伸30倍，橫向延 伸3.7倍，也可以同時雙軸延伸3 2倍，再將上述之多層光 學膜1 1貼合於塑膠基材1 〇，同時將保護作用之保護膜 片12貼合於該多層光學膜11之上。 本實驗組亦可利用第二種實施方法將塑膠基材工 〇、COPEN材質與PMMA材質及保護膜片丄2以共押出 •方法製作二百四十九層的裝飾膜片1 〇 〇，之後進行上述 軸向拉伸、成型及射出等後續步驟以完成最終製品。 而第六圖則顯示上述製品之反射頻譜圖，其反射波段 落於可見光區，因此在正視角時（零度）係呈現淡藍色， 而隨著視角變小，反射波段會往短波段偏移，故例如視角 為60度時，該製品有綠色的炫麗變色之色彩表現。上述 實驗組中’該多層光學膜1 1中之折射率差至少為〇 17， 最佳者為0.29。 18 201022013 •本發明更提出-種模内裝飾成型製程之製 括.-塑料2 0 ’·以及一設置於該塑料2 〇上之具可 =:片100，其中該裝飾膜片1〇〇包括:一塑 膠基材1 0，· -設置於該塑膠基材工〇上 上，該多層光學膜“係為兩種以上之聚醋材料所 ^ ’且不同聚醋材料的膜層之間具有—財值之折射率 以及一設置於該多層光學膜1 1上之保護膜片！ 2， =上=光學膜11之特性均已於上述製程步驟中 說明’故在此不再加以贅述。 綜上所述’本發明具有下列諸項優點： 本發㈣應用—難飾膜片於—模内裝飾製程， 產具有，多層交錯疊合之多層光學膜，使得最終 口口可因為3亥多層光學膜中不同膜層之間至少有The refractive index difference between the film layer and the PMMA film layer is about 0.26, and the thickness ratio of the two film layers at the extrusion is 1/M65, so there is a gradient change in the thickness. Step (2): attaching a protective film 1 2 of PMMA to the upper surface of the multilayer optical film 1 1 , the protective film 2 of the PMMA is a high hardness material to provide a better protection function. And the process of injection is based on the outer casing of the electronic product, and then the second embodiment is used to make the mirror surface (five) bribe effect. The PC material is made of 〇, ΡΕΝ material and ρμμα material I and ΡΜΜΑ 保护 保护 保护 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四 四The thickness of the substrate 10 is 16 201022013 750 μm, and the protective film sheet 2 used in the first experimental group uses the modified PMMA material, and the hardness can be at least 2H after the above-mentioned stretching alignment. 'To effectively enhance the effectiveness of protection. The fourth diagram shows the reflection spectrum of the above product, and the reflected wave is in the visible light region, so the mirror appearance of total reflection is presented at a positive viewing angle (zero degree), and the reflection band will be short-wavelength as the viewing angle becomes smaller. Shift, so for example, when the viewing angle is 6 degrees, the product has a pale blue color performance. The second embodiment of the present invention can produce a shell having a color-changing effect (i.e., a second article) by the first embodiment. In this experimental group, two hundred and eighteen layers are used: the MMA material (ie, the first film layer 1 1 〇) and the COPEN material ^ the first film layer 1 1 1 ) are alternately stacked and formed into 2 hearts by a co-extrusion method. m multilayer optical film! i, the multilayer optical film 丄1Jt extends D times through a biaxial extension 'where the longitudinal extension (MD) is extended by 3.Q times, laterally), and can also be extended by 32 times in the longitudinal and lateral directions of the simultaneous biaxial extension. The upper layer 1 is attached to the plastic substrate 1 while the protective film 1 2 is attached to the multilayer optical film i 1 . The experimental group can also use the second implementation method to (4) = EN material (four) ρμμα „·€μ12 to co-extend the twenty-layer decorative film 100 ' after axial stretching, 201022013 now ======= Three experimental groups: The present invention can use the first embodiment to produce a reddish effect (i.e., the second product). In this experimental group, two hundred and forty-seven layers of surface material (ie, the first tree) are utilized. The ester film layer 1 10 0 and the COPEN material ❹ (ie, the second tree S film layer 1 1 1 ) are stacked in a wrong manner and a 230/zm multilayer optical film 1 is formed via a co-extrusion method, and the multilayer optical film 1 is formed. i is further extended by a biaxial axis, wherein the successive biaxial stretching extends 30 times in the longitudinal direction, 3.7 times in the lateral direction, or 32 times in the biaxial direction, and the above-mentioned multilayer optical film 1 1 is attached to the plastic substrate 1 〇 At the same time, the protective protective film 12 is attached to the multilayer optical film 11. The experimental group can also use the second embodiment to process the plastic substrate, COPEN material, PMMA material and protective film 丄2 Make a 249-layer decorative film 1 以 by co-extrusion method, and then proceed Subsequent steps of axial stretching, forming and injection to complete the final product. The sixth figure shows the reflection spectrum of the above product, the reflected wave is in the visible region, so it is light blue at the positive viewing angle (zero degree). Color, and as the viewing angle becomes smaller, the reflection band shifts to a shorter wavelength band. Therefore, for example, when the viewing angle is 60 degrees, the product has a green and discolored color expression. In the above experimental group, 'the multilayer optical film 1 1 The difference in refractive index is at least 〇17, and the best is 0.29. 18 201022013 • The present invention further proposes that the plastic in-mold decorative molding process includes - plastic 2 0 '· and one set on the plastic 2 〇 =: sheet 100, wherein the decorative film 1 includes: a plastic substrate 10, which is disposed on the plastic substrate, the multilayer optical film is "two or more kinds of polyester materials" ^ 'And the refractive index of the different layers of the polyester material has a refractive index and a protective film disposed on the multilayer optical film 11! 2, = upper = the characteristics of the optical film 11 have been explained in the above process steps, and therefore will not be described again here. In summary, the present invention has the following advantages: The present invention (4) application-difficult to decorate the film in the in-mold decorative process, and has a multi-layered interlaced multilayer optical film, so that the final mouth can be multi-layered by 3 At least between different layers in the optical film
具有折射率差異而產生絲上的色彩 I 的應用價值。 < 杈冋了產口口 2、另-方面，本發明之多層光學膜具有高可成型性 及兩延伸性’故不會產生膜層碎裂的問題。 惟以上所述僅為本發明之較佳實施例，非意欲揭限本 I專·護範圍，故舉凡利本發明朗書及圖式内 =為之等效變化，均同理皆包含於本發明之權 圍内，合予陳明。 祀 圖式簡單說明】 之第 第-圖係本發明模㈣飾成型製程 19 201022013 一實施方法之流程圖。 第二圖係本發明之應用裝飾膜片之模内裝飾成型製程之第 二實施方法之流程圖。 第三圖至第三B圖係本發明之應用裝飾膜片之模内裝飾成 型製程之示意圖。 第四圖係本發明之應用裝飾膜片之模内裝飾成型製程所製 成之第一種製品之反射頻譜圖。 | 第五圖係本發明之應用裝飾獏片之模喊飾成 成之第二種製品之反射頻譜圖。 、 之模内裴飾成型製程所製 第六圖係本發明之應用裝鋅臈片 成之第二種製品之反射頻譜圖。 第七圖係本發明之弓形區之示咅圖 【主要元件符號說明】 1 10 模内裝飾成型製程之製品 塑膠基材 、 11 多層膜 100 裝飾膜片 110 第一膜層 1 2 111 保護膜片 第二膜層 2 0 塑料 W 橫軸方向寬度 B 最大凹陷深度 20The application value of having a difference in refractive index to produce a color I on the filament. < In view of the production port 2, the multilayer optical film of the present invention has high formability and two extensibility, so that there is no problem that the film layer is broken. However, the above description is only a preferred embodiment of the present invention, and it is not intended to limit the scope of the present invention. Therefore, the equivalent of the invention and the equivalent of the present invention are included in the present invention. Within the scope of the invention, he is given to Chen Ming.简单 Simple illustration of the figure] The first figure is a mold forming process of the invention (four). 19 201022013 A flow chart of an implementation method. The second drawing is a flow chart of the second embodiment of the in-mold decorative molding process for applying the decorative film of the present invention. The third to third B drawings are schematic views of the in-mold decorative molding process of the decorative film of the present invention. The fourth figure is a reflection spectrum diagram of the first article produced by the in-mold decoration molding process of the decorative film of the present invention. The fifth figure is a reflection spectrum diagram of the second product of the present invention. The sixth figure is a reflection spectrum diagram of the second product of the application of the zinc-containing enamel sheet of the present invention. Figure 7 is a schematic view of the arcuate region of the present invention. [Main component symbol description] 1 10 In-mold decorative molding process product plastic substrate, 11 multilayer film 100 decorative film 110 first film layer 1 2 111 protective film sheet Second film layer 2 0 Plastic W Horizontal axis direction width B Maximum depression depth 20