201020094 六、發明說明： 【發明所屬之技術領域】 本發明是關於利用複數的樹脂進行複合成形之多層成 形品的製造方法、以及該方法所使用的模具組件。 【先前技術】 關於多層成形品的發明，下述專利文獻1是已知的。 專利文獻1所記載的發明，是對於在凹部配設有事先成形 好的透明表層材之第1固定模具（第1模芯），將可動模具（ 腔模）進行合模，從第1澆口射出第1樹脂而在表層材的 背面成形出第1成形品，一旦進行開模後，以在可動模具 保持一次成形品的狀態讓第2固定模具（第2模芯）滑動移 動至可動模具後，將第2固定模具和可動模具進行合模， 從第2澆口射出第2樹脂而在一次成形品的背面成形出二 次成形品，再度進行開模，將所獲得的多層成形品從模具 取出，而實施前述一連串的步驟。 依據上述構造，由於在透明表層材的背面能讓一次成 形品和二次成形品成爲積層狀態，藉由將一次成形品和二 次成形品的任一方著色，可將本體的內部隱蔽，另一方面 ，若一次成形品也採用透明的材質，可成爲透視下方的二 次成形品的形態。 〔專利文獻1〕曰本特開2005-66834號公報 【發明內容】 -5- 201020094 然而，藉由在模具的形狀、注入的步驟方面下工夫， 在第1樹脂層和第2樹脂層之間以嵌入狀設置事先成形好 的中間層也是可能的。例如，只要配置於中間層的背面之 一次成形品是採用透明材質，且在中間層配設適當的顏色 、圖案，就變成可透過一次成形品而看見中間層的顏色、 圖案，可賦予具有深度感的設計，而獲得優異的美觀性。 即使中間層沒有顏色、圖案，由於是將一次成形品、中間 層、二次成形品共三層積層在一起，可增強物理強度而提 昇耐久性。 此外，依據在一次成形品和二次成形品之間設置中間 層的構造，在注入第2樹脂時，第2樹脂的熱不致直接傳 遞至一次成形品而是以被中間層緩衝的狀態來傳遞，因此 也能抑制：一次成形品受到來自第2樹脂的熱而再度熔融 所發生之分布不均的現象。 然而，若在一次成形品和二次成形品之間設置具有圖 案的中間層（裝飾層），可能發生所謂「飛出澆口」，亦即 在進行二次成形的樹脂注入時，中間層受熱而再熔融的現 象。「飛出澆口」是指，高溫（2 5 0 °C〜2 8 0 °C )的二次成形 的樹脂接觸中間層時，該樹脂的熱會傳遞至中間層，另一 方面，基於一次成形品的隔熱效應而使該熱不容易傳遞至 模具，因此中間層變高溫而發生熔融，造成圖案移動而發 生變形的現象。 此外，關於一次成形品再熔融的現象也是，僅藉由在 一次成形品和二次成形品之間設置中間層並無法充分地阻 -6 - 201020094 止’爲了充分阻止則必須將一次成形品 充分抑制多層成形品的厚度之課題。 本發明是有鑑於上述現狀而開發完 了提供一種多層成形品之製造方法及多 配置於中間層（與第1樹脂層熔接）的另 脂來形成第2樹脂層時，可抑制中間層 象，或是可更有效地抑制一次成形品的: 本發明的多層成形品的製造方法之 具備隔著中間層來配置之第1樹脂層及 成形品的製造方法，係具有： 在前述中間層的一面熔接前述第1 成形品的第1步驟、以及 在配置於前述中間層的另一面之模 前述第2樹脂層的第2步驟； 在前述中間層或前述第1樹脂層的 多層成形品的外部且與前述一次成形品 突出片； 在前述第2步驟，前述樹脂是經由 流路來注入前述模穴。 此外，本發明的多層成形用模具之 用於具備隔著中間層來配置之第1樹脂 多層成形品的模具組件；係具備： 可支承一次成形品（在前述中間層的 樹脂層而構成）之第1模具、以及 增厚，而帶來無法 成的，其目的是爲 層成形用模具，在 一面之模穴注入樹 的「飛出澆口」現 再熔融。 第一特徵構造，是 第2樹脂層之多層 樹脂層而提供一次 穴注入樹脂而形成 外周部形成：突出 的支承模具抵接之 面對前述突出片的 第一特徵構造，是 層及第2樹脂層之 一面熔接前述第1 201020094 用來在前述中間層的另一面側形成收容樹脂的模穴之 第2模具； 前述第1模具係具備：在將前述第1模具和前述第2 模具合模時，用來支承形成於前述中間層或前述第1樹脂 層的外周部的突出片之支承部； 用來對前述模穴注入樹脂的流路是設置成包含面對前 述突出片的部位。 依據此等的特徵構造，所注入的第2樹脂，會通過被 突出片和一側的模具所挾持的空間後接觸中間層。這時， 即使高溫的第2樹脂接觸中間層而使第2樹脂的熱傳遞至 中間層，由於中間層的熱容易通過突出片而傳遞至另一側 的模具，因此中間層不容易變高溫。此外，特別是將突出 片設置於中間層的情況，從第2樹脂傳遞至中間層的突出 片的熱，首先會沿著突出片的寬度方向擴散後再傳遞至突 出片以外的中間層的本體，比起未設置突出片而使來自第 2樹脂的熱直接傳遞至中間層本體的情況，中間層的局部 不容易變高溫。因此，可防止中間層的熔融、圖案發生變 形（飛出澆口）。特別是，中間層之突出片附近的部位雖然 容易變得高溫而容易使中間層發生熔融，但該突出片附近 的部位的熱會通過突出片而傳遞至另一方的模具，因此可 適當地防止中間層的熔融。 此外，依據此等的特徵構造，不僅是在一次成形品和 二次成形品之間設置中間層，由於第2樹脂的熱是通過突 出片而傳遞至另一方的模具，傳遞至一次成形品的熱量減 -8- 201020094 少，因此也能充分地阻止一次成形品發生再熔融的現象， 結果能使多層成形品的厚度變得夠小。 本發明的其他特徵手段，是在本發明的多層成形品的 製造方法中，在前述第2步驟，在將前述突出片的緣部固 定的狀態下進行前述樹脂的注入。 依據此特徵構造，在第2樹脂注入時，可防止裝飾層 的位置偏移而造成裝飾層發生上浮、捲曲。如此，能將突 出片與另一側模具的接觸良好地維持住，使裝飾層的熱通 過突出片而確實地傳遞至另一側的模具。因此，可確實地 防止裝飾層的熔融。 本發明的其他特徵構造，是在本發明的多層成形用模 具中，藉由前述可動模具及前述第2固定模具來挾持前述 突出片的緣部。 依據此特徵構造，由於利用可動模具及第2固定模具 來挾持固定突出片，可防止在可動模具及第2固定模具和 突出片之間發生滑動，在注入第2樹脂時’可進一步防止 裝飾層的位置偏移而造成裝飾層發生上浮、捲曲。而且， 在將可動模具及第2固定模具合模時’由於利用可動模具 及第2固定模具來挾持固定突出片’不須另外設置用來挾 持突出片的構造，而能謀求構造的簡單化。 本發明的其他特徵構造，前述固定手段’是設置在前 述第1模具和前述第2模具的按壓部，其會基於前述合模 而挾持固定突出片的緣部。 依據此特徵構造，按照第1模具和第2模具的合模可 -9 - 201020094 自動且確實地固定突出片的緣部’如此可更確實地抑制裝 飾層的上浮、捲曲。 本發明的其他特徵構造，是讓面對前述突出片之前述 流路的部位，呈直線狀連接於前述模穴的入口部；以及’ 在前述第2步驟’在面對前述突出片之前述流路沿著前述 模穴而連接的狀態下，沿著前述突出片的延伸方向注入樹 脂。 依據此特徵構造，所注入的第2樹脂，不會以正面撞 擊的方式接觸中間層的突出片及本體部位，可一邊沿著中 間層的該等部位平順地流動一邊進入模穴。因此，比起所 注入的樹脂以正面撞擊的方式接觸中間層而進入模穴的情 況，樹脂在中間層附近產生沉滯的可能性變小，而能進一 步減少樹脂的熱對中間層造成的影響。 本發明的其他特徵構造，是在被第1模具支承的前述 中間層和配置於第2模具的內面之裝飾薄膜之間形成前述 模穴，用來將前述裝飾薄膜固定在前述第2模具之夾持具 是設置在與前述突出片的基端部接觸的位置；以及，在前 述第2步驟，是在前述夾持具設置在與前述突出片的基端 部接觸的位置之狀態下注入樹脂。 依據此特徵構造，裝飾薄膜，到嵌入最終成形品的本 體部分之裝飾薄膜部位的前方處爲止，都被夾持具按壓在 第2模具上，因此可抑制裝飾薄膜從第2模具的凹部內面 上浮的現象，而能獲得品質良好的成形品。 本發明的其他特徵構造，收容形成於前述中間層的前 -10- 201020094 述突出片之前端之段差狀凹部’是設置在前述第1模具’ 以及，在前述第2步驟’在讓前述突出片的前端退避至前 述段差狀的凹部之狀態下注入樹脂。 依據此特徵構造，中間層的突出片之前端可受該段差 狀的凹部保護，因此可防止樹脂流動所造成之中間層的上 浮、捲曲等，而能獲得品質良好的成形品。 【實施方式】 〔第一實施形態〕 以下說明本發明的多層成形用模具。 本發明之多層成形用模具，是僅局部圖示之多層成形 機所具備的，如第1圖〜第4圖所示，係具備第1可動模 具1A和第2可動模具1B(都是第1模具的一例）、以及第 1固定模具3和第2固定模具7(都是第2模具的一例）。 第1圖係顯示可動模具ΙΑ、1B離開固定模具3、7的 狀態。如第2圖所示，若第1固定模具3和第1可動模具 1A進行合模，可形成用來收容第1樹脂之第1模穴2。另 一方面’若第2固定模具7和第2可動模具1B進行合模 ’可形成用來收容第2樹脂之第2模穴6。第3圖係顯示 第1樹脂和第2樹脂注入完成的狀態，第4圖係顯示可動 模具1 A、1 B再度分離之開模狀態。 多層成形機’係具備：固定盤8、相對於固定盤8配 設成可旋轉且可進退之旋轉盤9。固定盤8具有第〗固定 模具3及第2固定模具7 ’旋轉盤9具有一對的可動模具 -11 - 201020094 1A、1B。由於一對的可動模具1A、1B分別與第1固定模 具3及第2固定模具7成爲互相對置，如第2圖所示，若 將旋轉盤9按壓於固定盤8，一對的可動模具ΙΑ、1B會 與第1固定模具3及第2固定模具7同時進行合模’而能 同時進行第1樹脂的注入和第2樹脂的注入。 在第1圖的合模前的狀態，在與第2固定模具7對置 的第2可動模具1B，保持有在先前步驟所成形出的一次 成形品F1(第1樹脂層4和裝飾片5)，在第2固定模具7 配置待進行二次成形的裝飾薄膜12。此處的裝飾片5是構 成中間層。另一方面，在第1固定模具3’保持有要在後 續的一次成形使用的裝飾片5。多層成形機，係具備用來 將裝飾片5設置於第1固定模具3之機械人裝置15。 裝飾片5(中間層，裝飾層的一例），是配合第1固定 模具3的形狀而事前成形出的樹脂成形體，是以嵌合在第 1樹脂和第2樹脂之間的狀態永久保留在多層成形品的內 部。在裝飾片5，可事先形成有各種圖案，也能採用無花 紋之無圖案的彩色片等。裝飾片5，可使用丙烯酸系樹脂 、聚烯烴系樹脂等各種的樹脂來構成，若使用聚碳酸酯系 樹脂或PET等的高耐熱性的樹脂來構成的話，對於抑制飛 出澆口等的現象更具效果。裝飾片5的厚度宜在7 5〜2 00 y m的範圍，而以125〜150#m厚度最容易使用。 裝飾薄膜12(熱轉印箔，裝飾層的一例），是將熔接於 第1樹脂層或第2樹脂層的裝飾部12a和操作用的基體片 12b —體化而構成，在裝飾部12a熔接於樹脂層後的任意 -12- 201020094 步驟將基體片12b剝離。裝飾部12a，一般而言是具有： 成爲最終成形品的最外層之剝離保護層、熔接於樹脂層的 黏著層，一般而言是在剝離保護層和黏著層之間設置圖案 層，但也能作成無花紋之無圖案的有色薄膜。 作爲基體片12b的材質可使用：選自聚碳酸酯樹脂、 聚醯胺系樹脂、聚醯亞胺系樹脂、聚酯系樹脂、丙烯酸系 樹脂、烯烴系樹脂、胺酯系樹脂、丙烯腈-丁二烯-苯乙烯 系樹脂等之單層片，或選自上述2種以上的樹脂所構成的 積層片或共聚物片等。此外，爲了提高基體片12b的剝離 性，亦可在基體片1 2b和裝飾部之間形成胺基醇酸系樹脂 等所構成的脫模層。基體片12b的厚度宜爲5〜500 /zm。 作爲剝離保護層的材質可使用：丙烯酸系樹脂、硝化 棉系樹脂、聚胺酯系樹脂、氯化橡膠系樹脂、氯乙烯-酯 酸乙烯共聚物系樹脂、聚醯胺系樹脂、聚酯系樹脂、環氧 系樹脂、聚碳酸酯系樹脂、烯烴系樹脂、丙烯腈-丁二烯-苯乙烯系樹脂等。剝離保護層的厚度宜爲0.5~5 0/zm。 作爲圖案層的材質可使用著色墨水；該墨水所含的黏 結劑（binder)是使用：丙烯酸系樹脂、硝化棉系樹脂、聚 胺酯系樹脂、氯化橡膠系樹脂、氯乙烯-酯酸乙烯共聚物 系樹脂、聚醯胺系樹脂、聚酯系樹脂、環氧系樹脂等的樹 脂；該墨水所含的著色劑爲適當色的顏料或染料。 黏著層應選擇與要熔接的對象樹脂之親和性高的材質 。黏著層的厚度宜爲0.5〜50/zm。 如第2圖所示，若第1可動模具1A和第1固定模具 -13- 201020094 3進行合模，在被第1固定模具3支承的裝飾片5和第1 可動模具1A之間會形成可收容第1樹脂的第1模穴2。 在第1固定模具3設置：用來對第1模穴2射出第1樹脂 的第1澆口 10。 另一方面，若第2可動模具1B和第2固定模具7進 行合模，在被第2固定模具7支承的裝飾薄膜12和被第2 可動模具1B支承的裝飾片5之間，會形成用來收容第2 樹脂的第2模穴6。在第2固定模具7設置：用來對第2 模穴6射出第2樹脂的第2澆口 11。在第2固定模具7設 有：用來送出裝飾薄膜12之薄膜送出裝置13、用來捲取 裝飾薄膜12之薄膜捲取裝置14、用來將裝飾薄膜12按壓 於第2固定模具7側之矩形框狀的夾持具16。 此外，第1樹脂和第2樹脂，可以是不同顏色的樹脂 ，也可以是硬度或其他特性不同之種類不同的樹脂。例如 ，第1樹脂爲聚碳酸酯樹脂、ABS樹脂、或是聚碳酸酯和 ABS的合金等，第2樹脂爲PMMA(聚甲基丙烯酸甲酯樹 脂）。特別是，若第1樹脂爲ABS樹脂，第2樹脂爲 PMMA，由於ABS樹脂的成形性高，可良好地進行雙色成 形等的多層成形。而且，即使 ABS樹脂的軟化溫度比 PMM A的軟化溫度爲低，由於裝飾片5的存在，在注入聚 甲基丙烯酸甲酯樹脂時，可抑制成形好的ABS樹脂受到 PMMA的熱而發生變形。 此外，若裝飾薄膜12的剝離保護層或圖案層和第2 樹脂雙方都是使用PMMA，由於兩構件的表面彼此會因 201020094 PMMA的受熱熔融而成爲一體化，故不須在裝飾薄膜12 設置黏著層。 在可動模具1設置：用來固定裝飾片5的一部分之滑 動塊17(固定手段的一例）、在合模時用來收容夾持具16 之大致呈矩形的凹槽18。在第5圖（第3圖的I-Ι截面）及 第6圖（第5圖的I-Ι截面）詳細顯示其等的構造，第7圖 係顯示裝飾片5整體。如第7圖所示，固化後從可動模具 1取下之二次成形品F2，是在裝飾片5的一邊形成梯形的 突出片5a的緣部5b，藉由前述滑動塊17來固定該緣部 5b。此外，在第2可動模具1B形成有：在第2固定模具 7和可動模具1合模時，可收容突出片5a之輔助模穴19 。此外，用來注入第2樹脂之第2澆口 11是設置在：第2 樹脂一定會透過輔助模穴19而注入第2模穴6的位置。 詳而言之，若第2可動模具1B和第2固定模具7進 行合模，在兩者間會形成使第2澆口 1 1和第2模穴6互 相連通的連通流路20。從第2澆口 11射出的第2樹脂， 經由該連通流路20而注入第2模穴6。連通流路20係具 備：從第2澆口 11出發而到達近側的夾持具16之直線狀 的第1流路部分21、迂迴於夾持具16的周圍之大致呈d 字狀的第2流路部分22、從第2流路部分22出發而朝向 遠側的夾持具16之輔助模穴19。如第5圖所示，可收容 突出片5a之輔助模穴19，是形成越接近一次成形品F1越 寬之漸粗狀。 如此般構成連通流路20的結果’在注入第2樹脂時 -15- 201020094 ’始終會使第2樹脂通過由突出片5a和第2固定模具7 所圍繞的空間而接觸裝飾片5。因此，即使高溫的第2樹 脂接觸裝飾片5而使第2樹脂的熱傳遞到裝飾片5，由於 裝飾片5所受的熱可透過大面積的突出片5a而有效地往 可動模具1進行散熱，因此裝飾片5不會變得過度高溫， 可防止裝飾片5發生熔融。而且，在合模時，夾持具16 會使滑動塊17進行滑動移動而朝突出片5a側按壓，而藉 由滑動塊17和第2可動模具1B來挾持固定住突出片5a 的緣部5b，因此可防止在注入第2樹脂時發生裝飾片5的 位置偏移的現象。如此，由於能良好地維持突出片5a和 第2可動模具1B的接觸，裝飾片5的熱可通過突出片5a 而確實地傳熱至第2可動模具1B，且突出片5a的緣部5b 的熱可確實且有效率地往第2可動模具1B及滑動塊17散 熱。因此，可防止裝飾片5發生熔融。而且，可防止裝飾 片5之上浮和「捲曲」等，而能良好地製造多層成形品。 在此說明，使用本發明的多層成形用模具之多層成形 品（雙色成形品）之具體的製造方法。. 在本實施形態，是藉由機械人裝置15將成形好的裝 飾片5設置於第1固定模具3。另一方面，在第2固定模 具7，是藉由薄膜送出裝置13送出一定長度的裝飾薄膜 12，同時藉由薄膜捲取裝置14來捲取一定長度的裝飾薄 膜12，而使裝飾薄膜12與第2固定模具7相對置（參照第 1圖）。此外，裝飾薄膜12，是藉由夾持具16來按壓於第 2固定模具7的緣部，且藉由加熱裝置（未圖示）來加熱裝 -16- 201020094 飾薄膜12，並藉由吸引裝置（未圖示）來使裝飾薄膜12密 合於第2固定模具7的凹部》這時’在與第2固定模具7 對置的可動模具1，保持有由第1樹脂層4和裝飾片5(熔 接在該第1樹脂層4的上面）所構成之一次成形品F1。 接著，如第2圖所示，使旋轉盤9往固定盤8側移動 ，而使第1可動模具1A和第1固定模具3合模，並使第 2可動模具1B和第2固定模具7合模。如此，在被第1 固定模具3支承的裝飾片5和第1可動模具1A之間形成 第1模穴2。同時，在被第2固定模具7支承的裝飾薄膜 1 2和被第2可動模具1 B支承的一次成形品F1之間形成 第2模穴6。同時，在進行合模時使被夾持具16按壓的滑 動塊17往突出片5a側滑動移動，而藉由滑動塊丨7 (按壓 部的一例）和另一方的可動模具1的一部分（按壓部的一例） 來挾持固定住突出片5a的緣部5b。如第3圖所示，從第 1澆口 10射出的第1樹脂是注入第1模穴2，而在裝飾片 5的下面成形出第1樹脂層4，以構成下個一次成形品F1 。另一方面’如第3圖及第6圖所示，從第2湊口 11射 出的第2樹脂是注入第2模穴6而成形出：裝飾薄膜12 和一次成形品F1和第2樹脂層23 —體化所構成的二次成 形品F2。 然後’如第4圖所示’使旋轉盤9離開固定盤8,而 使雙方的可動模具1從第1固定模具3及第2固定模具7 進行開模。藉由此開模’裝飾薄膜12的基體片12a從裝 飾部1 2b自然地剝離’而獲得僅裝飾部i 2b轉印到第2樹 -17- 201020094 脂表面之二次成形品F2。於是，將固化的二次成形品F2 從可動模具1取下，讓旋轉盤9旋轉180度。接著，反覆 進行上述操作而製造出：由第1樹脂層4、裝飾片5、第2 樹脂層23、裝飾薄膜12的裝飾部12b依序積層而構成的 二次成形品F2。轉印至二次成形品F2的裝飾部1 2b，是 由熔接於第2樹脂層23的黏著層、中間的圖案層、最外 側的剝離保護層所構成。又作爲精加工步驟，是將突出於 二次成形品F2外部之突出片5a，利用剪刀狀等的器具進 行切斷（參照第7圖）。 〔第二實施形態〕 在以下的第8圖〜第12圖所示的第二實施形態，主要 是針對與第一實施形態的構造不同的構造來作說明，對於 相同的構造則省略其說明。 在第二實施形態所使用的多層成形用模具，如第8圖 所示，是具備：第1固定模具33、第2固定模具3 7(第2 模具的一例）和一對的可動模具31 (第1模具的一例）。與 第一實施形態的情況相反’固定模具3 3、3 7是凸狀的公 模具，一對的可動模具31是凹狀的母模具。 如第9圖所示，若第1固定模具33和第1可動模具 31A進行合模，可形成用來收容第1樹脂之第1模穴32; 若第2固定模具37和第2可動模具31B進行合模，可形 成用來收容第2樹脂之第2模穴36。 形成於可動模具31之輔助模穴38，在第2可動模具 -18- 201020094 31B和第2固定模具37合模時’可收容裝飾片35的突出 片3 5a。此外’用來注入第2樹脂的第2澆口 39，是設置 在：第2樹脂一定會透過輔助模穴38而注入第2模穴36 的位置。 詳而言之，如第12圖所示’若第2可動模具31B和 第2固定模具37進行合模’在第2可動模具31B和第2 固定模具3 7之間會形成使第2澆口 3 9和第2模穴3 6互 相連通的連通流路40。從第2澆口 39射出的第2樹脂， 經由該連通流路40而注入第2模穴36。連通流路40係具 備：從第2澆口 3 9出發而到達近側的夾持具1 6之直線狀 的第1流路部分41、迂迴於夾持具16的周圍之大致呈C 字狀的第2流路部分42、從第2流路部分42出發而朝向 遠側的夾持具16之輔助模穴38。與第1實施形態的輔助 模穴19同樣的，可收容突出片35a之輔助模穴38’是形 成從第2流路部分42往一次成形品F1越來越寬之漸粗狀 〇 如此般構成連通流路40的結果’在注入第2樹脂時 ，始終會使第2樹脂通過由突出片35a和第2固定模具37 所圍繞的空間而接觸裝飾片35。因此’即使高溫的第2樹 脂接觸裝飾片35而使第2樹脂的熱傳遞到裝飾片35’由 於裝飾片35所受的熱可透過大面積的突出片35a而有效 地往可動模具31進行散熱’因此裝飾片35不會變得過度 高溫，可防止裝飾片35發生熔融及圖案變形。而且’在 合模時，由於在滑動塊丨7和第2可動模具31B之間挾持 •19- 201020094 固定住突出片3 5a的緣部3 5b’可防止在注入第2樹脂時 發生裝飾片35的位置偏移的現象。如此，由於能良好地 維持突出片35a和第2可動模具31B的接觸，裝飾片35 的熱可通過突出片35a而確實地傳熱至第2可動模具31B ，且突出片35a的緣部3 5b的熱可確實且有效率地往可動 模具31及滑動塊17散熱。因此，可防止裝飾片35發生 熔融。而且，可防止裝飾片35之上浮和「捲曲」等，而 能良好地製造多層成形品。 接著說明第2實施形態之多層成形品之具體的製造方 法。 在本實施形態，如第8圖所示，在第1可動模具31A ，是藉由薄膜送出裝置13送出一定長度的裝飾薄膜12, 同時藉由薄膜捲取裝置14來捲取一定長度的裝飾薄膜12 ，而使裝飾薄膜12與第1可動模具31A相對置，裝飾薄 膜12是藉由夾持具16來按壓於第1可動模具31A的緣部 ，且藉由加熱裝置來加熱裝飾薄膜12，並藉由吸引裝置來 使裝飾薄膜12密合於第1可動模具31A的凹部。這時， 在與第1可動模具31A對置的第1固定模具33，藉由機 械人裝置15而保持有裝飾片35。在另一方的可動模具31 ，保持有先前步驟所成形出的一次成形品F1 (第1樹脂層 34和裝飾片35)。 接著，如第9圖所示，使旋轉盤9往固定盤8側移動 ，而使第1可動模具31A和第1固定模具33合模，並使 第2可動模具31B和第2固定模具37合模。如此，在被 -20- 201020094 第1可動模具31A支承的裝飾薄膜12和被第1固定模具 33支承的裝飾片35之間形成第i模穴32。同時，在被第 2可動模具31B支承的一次成形品F1和第2固定模具37 之間形成第2模穴36。在進行此合模時使被夾持具16按 壓的滑動塊17往突出片35a側滑動移動，而藉由滑動塊 17(按壓部的一例）和另一方的可動模具31的一部分（按壓 部的一例）來挾持固定住突出片35a的緣部35b。如第10 圖所示’從第1澆口 49射出的第1樹脂是注入第1模穴 32，而在裝飾薄膜12和裝飾片35之間成形出第1樹脂層 34’以獲得一次成形品F1。另一方面，如第1〇圖及第12 圖所示，從第2澆口 39射出的第2樹脂是注入第2模穴 36而獲得：一次成形品F1和第2樹脂層43 —體化所構 成的成形品。 然後，如第11圖所示，使旋轉盤9離開固定盤8，而 使雙方的可動模具31從第1固定模具33及第2固定模具 37進行開模。藉由此開模，被第2固定模具37支承的二 次成形品F2之裝飾薄膜12的基體片12a自然地剝離，而 獲得僅裝飾部1 2b轉印到第2樹脂表面之二次成形品F2 。於是，將固化的二次成形品F2從可動模具31取下，讓 旋轉盤9旋轉180度。接著，反覆進行上述操作而製造出 :由第2樹脂層43、裝飾片35、第1樹脂層34、裝飾薄 膜12的裝飾部12b依序積層而構成的二次成形品F2。 〔第三實施形態〕 -21 - 201020094 第三實施形態所使用的多層成形用模具，如第13圖〜 第18圖所示係具備：一對的可動模具51A、51B(第1模 具的一例）、第1固定模具52和第2固定模具53 (第2模 具的一例）。第13圖~第18圖係顯示注入第1樹脂和第2 樹脂後的狀態。第三實施形態僅使用裝飾片56 ’並未使用 裝飾薄膜12。雖未圖示出’與上述實施形態同樣的’一對 的可動模具51A、51B是被旋轉盤9支承’第1固定模具 52和第2固定模具53是被固定盤8支承。 若保持有裝飾片56之第1固定模具52和第1可動模 具51A進行合模，在裝飾片56和第1可動模具51A之間 會形成第1模穴54。第14圖及第15圖係顯示：在該第1 模穴54注入第1樹脂（5 5)而獲得一次成形品F1的狀態。 另一方面，對於第2固定模具53，若將保持有一次成 形品Fl(在先前步驟進行注入/成形而獲得）之第2可動模 具51B進行合模，在一次成形品F1的裝飾片56和第2固 定模具53之間會形成第2模穴64。第17圖及第1 8圖係 顯示：在該第2模穴64注入第2樹脂（65)而獲得二次成形 品F 2的狀態。 如第18圖所示，在可動模具51和第2固定模具53 之間，形成可收容裝飾片56的突出片56a之輔助模穴71 ，用來注入第2樹脂之第2澆口 66是設置在：第2樹脂 一定會透過輔助模穴71而注入第2模穴64的位置。 如第13圖所示’裝飾片56的突出片56a，是從裝飾 片56的一側長邊的大致整個範圍突出而呈長方形。如第 -22- 201020094 14圖（第13圖之11-II截面）所示，在第1可動模具51A的 分模面51a和凸部51b之間，沿著凸部51b的一長邊形成 有截面呈V字形的溝槽63。另一方面，在第1固定模具 52的分模面52a和凹部52b之間，形成有嵌入溝槽63之 截面呈V字形的突條62。因此，若第1可動模具51A和 第1固定模具52進行合模，突條62的一側面62a會和溝 槽63的一側面63a接觸，同時藉由突條62的另一側面 62b(按壓部的一例）和溝槽63的另一側面63b(按壓部的一 例）來挾持裝飾片56的突出片56a。 如第13圖、第14圖、第15圖（第13圖的I-Ι截面） 所示，若第1可動模具51A和第1固定模具52進行合模 ，在第1可動模具51A和第1固定模具52之間會形成第 1連通流路61 (用來使第1澆口 57和第1模穴54連通）。 從第1澆口 57射出的第1樹脂，經過該第1連通流路61 而注入第1模穴54。第1連通流路61係具備：形成於第 1可動模具51A的分模面51a和第1固定模具52的分模 面52a之間的直線狀的第1流路部分58、形成於突條62 的一側面62 a和溝槽6 3的一側面6 3 a之間的直線狀的第2 流路部分59、形成於突條62的另一側面62b和溝槽63的 另一側面63b之間的第3流路部分60。第3流路部分60 是形成：從第2流路部分59往一次成形品F1越來越寬之 漸粗狀。第2流路部分59是呈曲折狀連接於第1流路部 分58，第3流路部分60是呈曲折狀連接於第2流路部分 •23- 59 ° 201020094 另一方面，如第17圖（第16圖之IV-IV截面）所示， 在第2固定模具53的分模面53a和凹部53b之間’形成 有嵌入溝槽63之截面呈V字形的突條72。因此，若第2 可動模具51B和第2固定模具53進行合模，突條72的一 側面72a會和溝槽63的一側面63a接觸，同時藉由突條 72的另一側面72b(按壓部的一例）和溝槽63的另一側面 63b(按壓部的一例）來挾持裝飾片56的突出片56a。 如第16圖、第17圖、第18圖（第16圖的ΙΙΙ-ΠΙ截 面）所示，若第2可動模具51B和第2固定模具53進行合 模，在第2可動模具51B和第2固定模具53之間會形成 第2連通流路7 0(用來使第2澆口 66和第2模穴64互相 連通）。從第2澆口 66射出的第2樹脂，經過該第2連通 流路70而注入第2模穴64。第2連通流路70係具備：形 成於第2可動模具51B的分模面51a和第2固定模具53 的分模面53a之間的直線狀的第1流路部分67、形成於突 條72的一側面72a和溝槽3的一側面63 a之間的直線狀 的第2流路部分68、形成於突條72的另一側面72b和溝 槽63的另一側面63b之間的第3流路部分69。第3流路 部分69是形成：從第2流路部分68往一次成形品F1越 來越寬之漸粗狀。第2流路部分68是呈曲折狀連接於第1 流路部分67，第3流路部分69是呈曲折狀連接於第2流 路部分68。在突條72的另一側面72b和溝槽63的另一側 面63b之間，形成有可收容裝飾片56的突出片56a的一 部分之輔助模穴71。在此，第3流路部分69(裝飾片56 201020094 之突出片5 6a的一部分形成露出）是構成輔助模穴71。 如此般構成連通流路40的結果’在注入第2樹脂時 ，始終會使第2樹脂通過由輔助模穴71附近的突出片56a 和第2固定模具53所圍繞的空間而接觸裝飾片56。因此 ，即使高溫的第2樹脂接觸裝飾片56而使第2樹脂的熱 傳遞到裝飾片56，由於裝飾片56所受的熱可透過大面積 的突出片5 6a而有效地往可動模具51進行散熱，因此裝 飾片56不會變得過度高溫，可防止裝飾片56發生熔融。 而且，在合模時，如第13圖及第14圖所示，突出片 56a之不與第3流路部分60重疊的兩側部分56c、56d， 是被挾持固定在第1可動模具51A和第1固定模具52之 間。因此，在從第1澆口 57朝第1模穴54注入第1樹脂 而在裝飾片56的下面成形出一次成形品55時，第1樹脂 不致進入其與另一側的側面62b之間的間隙。 此外，關於第2固定模具53和第2可動模具51B也 是，如第16圖及第17圖所示，突出片56a之不與第3流 路部分69重疊的兩側部分56f、56g，是被挾持固定在可 動模具51和第2固定模具53之間。因此，在將從第2澆 口 66射出的第2樹脂注入第2模穴64而在裝飾片55的 上面成形出二次成形品F2時’第2樹脂不致進入其與另 一側的側面63b之間的間隙。 然後，將第2可動模具51B和第2固定模具53開模 ，將二次成形品F2從第2可動模具51B取出。此外，作 爲精加工，是將在從可動模具51取下之二次成形品！；2的 -25 - 201020094201020094 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a method for producing a multilayer molded article by composite molding using a plurality of resins, and a mold assembly used in the method. [Prior Art] With regard to the invention of the multilayer molded article, the following Patent Document 1 is known. In the invention described in Patent Document 1, the first fixed mold (first core) in which the transparent surface material previously formed is placed in the concave portion is clamped, and the movable mold (cavity mold) is clamped from the first gate. After the first resin is injected, the first molded article is formed on the back surface of the surface layer material, and after the mold is opened, the second fixed mold (second core) is slid and moved to the movable mold while the primary mold is held by the movable mold. The second fixed mold and the movable mold are clamped, the second resin is injected from the second gate, and the secondary molded product is formed on the back surface of the primary molded product, and the mold is again opened, and the obtained multilayer molded article is removed from the mold. Take out and perform the aforementioned series of steps. According to the above configuration, since the primary molded article and the secondary molded article can be laminated on the back surface of the transparent topsheet, the inside of the main body can be concealed by coloring either of the primary molded article and the secondary molded article. On the other hand, if the primary molded article is also made of a transparent material, it can be in the form of a secondary molded article under the see-through. [Patent Document 1] JP-A-2005-66834 [Summary of Invention] -5-201020094 However, by working on the shape of the mold and the step of injecting, between the first resin layer and the second resin layer, It is also possible to embed the previously formed intermediate layer in an embedded manner. For example, if the primary molded article disposed on the back surface of the intermediate layer is made of a transparent material and an appropriate color or pattern is disposed on the intermediate layer, the color and pattern of the intermediate layer can be seen through the primary molded article, and the depth can be imparted. The design of the senses, and the excellent aesthetics. Even if the intermediate layer has no color or pattern, since the primary molded article, the intermediate layer, and the secondary molded article are laminated in three layers, the physical strength can be enhanced to improve the durability. Further, according to the structure in which the intermediate layer is provided between the primary molded article and the secondary molded article, when the second resin is injected, the heat of the second resin is not directly transmitted to the primary molded article but is transferred in a state of being buffered by the intermediate layer. Therefore, it is also possible to suppress the uneven distribution of the primary molded article due to the heat from the second resin being remelted. However, if a patterned intermediate layer (decorative layer) is provided between the primary molded article and the secondary molded article, a so-called "fly-out gate" may occur, that is, when the resin is injected in the secondary molding, the intermediate layer is heated. And the phenomenon of remelting. "Flying out of the gate" means that when the secondary formed resin at a high temperature (250 ° C to 280 ° C) contacts the intermediate layer, the heat of the resin is transferred to the intermediate layer, and on the other hand, based on the time Since the heat of the molded article is not easily transmitted to the mold, the intermediate layer becomes high in temperature and melts, causing the pattern to move and deform. In addition, the phenomenon that the primary molded article is remelted is also that the intermediate layer is not sufficiently blocked by merely providing an intermediate layer between the primary molded article and the secondary molded article. - 201020104 The problem of suppressing the thickness of a multilayer molded article. According to the present invention, in order to provide a method for producing a multilayer molded article and a second resin layer which is disposed in an intermediate layer (which is welded to the first resin layer) to form a second resin layer, the intermediate layer image can be suppressed, or In the method for producing a multilayer molded article of the present invention, the first resin layer and the molded article which are disposed via the intermediate layer, have a method of producing a molded article of the present invention. a first step of the first molded article and a second step of the second resin layer disposed on the other surface of the intermediate layer; and the outer layer of the intermediate layer or the first resin layer The primary molded product protruding piece; in the second step, the resin is injected into the cavity through a flow path. Further, the mold for a multilayer molding of the present invention is provided with a mold assembly having a first resin multilayer molded article disposed with an intermediate layer interposed therebetween, and is provided with a mold capable of supporting a primary molded article (constituted in a resin layer of the intermediate layer) The first mold and the thickening were not able to be formed, and the purpose was to form a mold for layer forming, and the "flying gate" of the tree in one side of the cavity was remelted. The first characteristic structure is a multilayer resin layer of the second resin layer and provides a single hole injecting resin to form an outer peripheral portion: a first characteristic structure in which the protruding support mold abuts against the protruding piece, and is a layer and a second resin One of the first surface of the layer is welded to the first mold for forming a cavity for accommodating the resin on the other surface side of the intermediate layer, and the first mold is provided to mold the first mold and the second mold. a support portion for supporting the protruding piece formed on the outer layer of the intermediate layer or the first resin layer; and a flow path for injecting the resin into the cavity is provided to include a portion facing the protruding piece. According to such a characteristic structure, the injected second resin contacts the intermediate layer through the space held by the protruding piece and the mold of one side. At this time, even if the high temperature second resin contacts the intermediate layer and the heat of the second resin is transferred to the intermediate layer, the heat of the intermediate layer is easily transmitted to the other mold through the protruding sheet, so that the intermediate layer is not easily heated. Further, particularly in the case where the protruding piece is provided on the intermediate layer, the heat of the protruding piece transferred from the second resin to the intermediate layer is first diffused in the width direction of the protruding piece and then transmitted to the body of the intermediate layer other than the protruding piece. When the heat from the second resin is directly transmitted to the intermediate layer body without providing the protruding piece, the portion of the intermediate layer is not easily heated to a high temperature. Therefore, it is possible to prevent the intermediate layer from being melted and the pattern from being deformed (flying out of the gate). In particular, the portion in the vicinity of the protruding piece of the intermediate layer is likely to be heated at a high temperature, and the intermediate layer is easily melted. However, the heat in the vicinity of the protruding piece is transmitted to the other mold through the protruding piece, so that it can be appropriately prevented. Melting of the intermediate layer. Further, according to such a characteristic structure, not only an intermediate layer is provided between the primary molded article and the secondary molded article, but heat of the second resin is transmitted to the other die through the protruding piece, and is transferred to the primary molded article. Since the amount of heat loss -8-201020094 is small, the phenomenon of remelting of the primary molded article can be sufficiently prevented, and as a result, the thickness of the multilayered molded article can be made sufficiently small. According to another aspect of the invention, in the method for producing a multilayer molded article of the invention, in the second step, the resin is injected while the edge of the protruding piece is fixed. According to this characteristic structure, at the time of the second resin injection, the positional deviation of the decorative layer can be prevented, and the decorative layer can be lifted and curled. In this way, the contact between the protruding piece and the other side mold can be favorably maintained, and the heat of the decorative layer can be surely transmitted to the other side mold through the protruding piece. Therefore, the melting of the decorative layer can be surely prevented. According to another feature of the present invention, in the multilayer molding die of the present invention, the edge portion of the protruding piece is held by the movable mold and the second fixed mold. According to this characteristic structure, since the fixed protruding piece is held by the movable mold and the second fixed mold, slippage between the movable mold and the second fixed mold and the protruding piece can be prevented, and the decorative layer can be further prevented when the second resin is injected. The position of the offset causes the decorative layer to float and curl. Further, when the movable mold and the second fixed mold are clamped together, the structure for holding the protruding piece by the movable mold and the second fixed mold is not required to separately provide a structure for holding the protruding piece, and the structure can be simplified. According to still another feature of the present invention, the fixing means is a pressing portion provided in the first mold and the second mold, and the edge portion of the protruding piece is held by the mold clamping. According to this characteristic configuration, the edge portion of the protruding piece can be automatically and surely fixed in accordance with the mold clamping of the first mold and the second mold -9 - 201020094, so that the floating and curling of the decorative layer can be more reliably suppressed. Another characteristic feature of the present invention is that the portion facing the flow path of the protruding piece is linearly connected to the inlet portion of the cavity; and the 'the second step' is facing the flow of the protruding piece The resin is injected along the extending direction of the protruding piece in a state where the road is connected along the cavity. According to this characteristic structure, the injected second resin does not contact the protruding piece and the body portion of the intermediate layer in a frontal collision manner, and can smoothly enter the cavity while flowing along the portions of the intermediate layer. Therefore, in the case where the injected resin contacts the intermediate layer in a frontal impact and enters the cavity, the possibility that the resin is stagnated near the intermediate layer becomes small, and the influence of the heat of the resin on the intermediate layer can be further reduced. According to still another feature of the present invention, the cavity is formed between the intermediate layer supported by the first die and the decorative film disposed on the inner surface of the second die, and the decorative film is fixed to the second die. The holder is disposed at a position in contact with the base end portion of the protruding piece; and, in the second step, the resin is injected in a state where the holder is placed in contact with the base end portion of the protruding piece . According to this characteristic structure, the decorative film is pressed against the second mold by the holder until it is inserted in front of the decorative film portion of the main body portion of the final molded article, so that the decorative film can be suppressed from the inner surface of the concave portion of the second mold. The phenomenon of floating up, and the quality of the molded article can be obtained. According to another feature of the present invention, the stepped recessed portion ′ that is formed at the front end of the protruding piece formed in the front layer of the intermediate layer -10-201020094 is provided in the first mold ′ and the protruding piece is formed in the second step ′ The front end is retracted to the stepped recessed portion, and the resin is injected. According to this feature, the front end of the protruding piece of the intermediate layer can be protected by the concave portion of the step, so that the intermediate layer can be prevented from floating, curling, or the like due to the flow of the resin, and a molded article of good quality can be obtained. [Embodiment] [First Embodiment] A multilayer molding die of the present invention will be described below. The multilayer molding die of the present invention is provided in a multilayer molding machine which is only partially shown, and as shown in Figs. 1 to 4, the first movable mold 1A and the second movable mold 1B are provided (both are first). An example of the mold), and the first fixed mold 3 and the second fixed mold 7 (both are examples of the second mold). Fig. 1 shows a state in which the movable mold ΙΑ, 1B is separated from the fixed molds 3, 7. As shown in Fig. 2, when the first fixed mold 3 and the first movable mold 1A are closed, the first cavity 2 for accommodating the first resin can be formed. On the other hand, when the second fixed mold 7 and the second movable mold 1B are closed, a second cavity 6 for accommodating the second resin can be formed. Fig. 3 shows a state in which the first resin and the second resin are completely injected, and Fig. 4 shows a mold opening state in which the movable molds 1 A and 1 B are separated again. The multi-layer molding machine is provided with a fixed disk 8 and a rotary disk 9 that is rotatably and retractable with respect to the fixed disk 8. The fixed disk 8 has a first fixed mold 3 and a second fixed mold 7'. The rotary disk 9 has a pair of movable molds -11 - 201020094 1A, 1B. Since the pair of movable molds 1A and 1B are opposed to the first fixed mold 3 and the second fixed mold 7, respectively, as shown in Fig. 2, when the rotary disk 9 is pressed against the fixed disk 8, a pair of movable molds In the case where ΙΑ and 1B are simultaneously clamped with the first fixed mold 3 and the second fixed mold 7, the injection of the first resin and the injection of the second resin can be simultaneously performed. In the state before the mold clamping in the first drawing, the first movable product F1 (the first resin layer 4 and the decorative sheet 5) formed in the previous step is held in the second movable mold 1B opposed to the second fixed mold 7. The decorative film 12 to be subjected to secondary molding is disposed in the second fixed mold 7. The decorative sheet 5 here is an intermediate layer. On the other hand, the decorative sheet 5 to be used for the subsequent molding is held in the first fixed mold 3'. The multilayer molding machine includes a robot device 15 for providing the decorative sheet 5 to the first fixed mold 3. The decorative sheet 5 (an intermediate layer, an example of a decorative layer) is a resin molded body formed in advance in accordance with the shape of the first fixed mold 3, and is permanently retained in a state of being fitted between the first resin and the second resin. The inside of a multilayer molded article. In the decorative sheet 5, various patterns may be formed in advance, and a non-patterned colorless sheet or the like may be used. The decorative sheet 5 can be formed by using various resins such as an acrylic resin or a polyolefin resin. When a polycarbonate resin or a resin having high heat resistance such as PET is used, the phenomenon of suppressing flying out of the gate or the like is suppressed. More effective. The thickness of the decorative sheet 5 is preferably in the range of 7 5 to 2 00 y m, and is most easily used in the thickness of 125 to 150 #m. The decorative film 12 (an example of a thermal transfer foil and a decorative layer) is formed by integrating the decorative portion 12a welded to the first resin layer or the second resin layer and the base sheet 12b for operation, and is welded to the decorative portion 12a. The base sheet 12b is peeled off by any step -12-201020094 after the resin layer. The decorative portion 12a generally has a peeling protective layer that serves as the outermost layer of the final molded article, and an adhesive layer that is welded to the resin layer. Generally, a pattern layer is provided between the peeling protective layer and the adhesive layer, but A non-patterned, non-patterned film is produced. The material of the base sheet 12b can be selected from the group consisting of a polycarbonate resin, a polyamide resin, a polyimide resin, a polyester resin, an acrylic resin, an olefin resin, an amine ester resin, and an acrylonitrile- A single layer sheet such as a butadiene-styrene resin or a laminate sheet or a copolymer sheet selected from the above two or more types of resins. Further, in order to improve the releasability of the base sheet 12b, a release layer composed of an amine-based alkyd resin or the like may be formed between the base sheet 12b and the decorative portion. The thickness of the base sheet 12b is preferably 5 to 500 / zm. As a material of the peeling protective layer, an acrylic resin, a nitrocellulose resin, a polyurethane resin, a chlorinated rubber resin, a vinyl chloride-ester ethylene copolymer resin, a polyamide resin, a polyester resin, or the like may be used. An epoxy resin, a polycarbonate resin, an olefin resin, an acrylonitrile-butadiene-styrene resin, or the like. The thickness of the peeling protective layer is preferably 0. 5~5 0/zm. As the material of the pattern layer, a coloring ink can be used; the binder contained in the ink is: an acrylic resin, a nitrocellulose resin, a polyurethane resin, a chlorinated rubber resin, or a vinyl chloride-vinyl acetate copolymer. A resin such as a resin, a polyamide resin, a polyester resin, or an epoxy resin; and the coloring agent contained in the ink is a pigment or dye of a suitable color. The adhesive layer should be selected from materials with high affinity for the resin to be welded. The thickness of the adhesive layer should be 0. 5~50/zm. As shown in Fig. 2, when the first movable mold 1A and the first fixed mold 13-201020094 3 are clamped, a gap is formed between the decorative sheet 5 supported by the first fixed mold 3 and the first movable mold 1A. The first cavity 2 of the first resin is accommodated. The first fixed mold 3 is provided with a first gate 10 for discharging the first resin to the first cavity 2. On the other hand, when the second movable mold 1B and the second fixed mold 7 are clamped, the decorative film 12 supported by the second fixed mold 7 and the decorative sheet 5 supported by the second movable mold 1B are formed. The second cavity 6 for accommodating the second resin is accommodated. The second fixed mold 7 is provided with a second gate 11 for emitting the second resin to the second cavity 6. The second fixed mold 7 is provided with a film feeding device 13 for feeding the decorative film 12, a film winding device 14 for winding up the decorative film 12, and pressing the decorative film 12 against the second fixed mold 7 side. A rectangular frame-shaped holder 16. Further, the first resin and the second resin may be resins of different colors, or may be resins having different hardness or other characteristics. For example, the first resin is a polycarbonate resin, an ABS resin, or an alloy of polycarbonate and ABS, and the second resin is PMMA (polymethyl methacrylate resin). In particular, when the first resin is ABS resin and the second resin is PMMA, the ABS resin has high moldability, and can be subjected to multilayer molding such as two-color molding. Further, even if the softening temperature of the ABS resin is lower than the softening temperature of the PMM A, the molded ABS resin can be prevented from being deformed by the heat of the PMMA when the polymethyl methacrylate resin is injected due to the presence of the decorative sheet 5. Further, if the peeling protective layer or the pattern layer of the decorative film 12 and the second resin are both PMMA, since the surfaces of the two members are integrated by the heat fusion of 201020094 PMMA, it is not necessary to provide adhesion to the decorative film 12. Floor. The movable mold 1 is provided with a slide block 17 (an example of a fixing means) for fixing a part of the decorative sheet 5, and a substantially rectangular recess 18 for accommodating the holder 16 at the time of mold clamping. The structure of Fig. 5 (I-Ι cross section of Fig. 3) and Fig. 6 (I-Ι cross section of Fig. 5) are shown in detail, and Fig. 7 shows the entire decorative sheet 5. As shown in Fig. 7, the secondary molded article F2 which is removed from the movable mold 1 after curing is an edge portion 5b which is formed on one side of the decorative sheet 5 and has a trapezoidal protruding piece 5a, and the slider 7 is used to fix the edge. Part 5b. Further, in the second movable mold 1B, when the second fixed mold 7 and the movable mold 1 are closed, the auxiliary mold hole 19 of the protruding piece 5a can be accommodated. Further, the second gate 11 for injecting the second resin is provided at a position where the second resin is surely injected into the second cavity 6 through the auxiliary cavity 19. In detail, when the second movable mold 1B and the second fixed mold 7 are clamped, a communication passage 20 that allows the second gate 1 1 and the second cavity 6 to communicate with each other is formed therebetween. The second resin injected from the second gate 11 is injected into the second cavity 6 via the communication flow path 20. The communication channel 20 includes a linear first channel portion 21 that reaches the proximal holder 16 from the second gate 11 and a substantially d-shaped portion that is wound around the holder 16 The flow path portion 22 extends from the second flow path portion 22 toward the auxiliary cavity 19 of the distal holder 16. As shown in Fig. 5, the auxiliary cavity 19 which can accommodate the protruding piece 5a is formed to be gradually thicker as it is closer to the primary molded article F1. As a result of forming the communication channel 20 as described above, the second resin is always in contact with the decorative sheet 5 through the space surrounded by the protruding piece 5a and the second fixed mold 7 when the second resin is injected -15-201020094'. Therefore, even if the high temperature second resin contacts the decorative sheet 5 and the heat of the second resin is transmitted to the decorative sheet 5, the heat received by the decorative sheet 5 can be efficiently transmitted to the movable mold 1 through the large-area protruding sheet 5a. Therefore, the decorative sheet 5 does not become excessively high in temperature, and the decorative sheet 5 can be prevented from being melted. Further, at the time of mold clamping, the holder 16 causes the slide block 17 to slide and press toward the projecting piece 5a side, and the edge portion 5b of the projecting piece 5a is held by the slide block 17 and the second movable mold 1B. Therefore, it is possible to prevent the phenomenon that the position of the decorative sheet 5 is shifted when the second resin is injected. Thus, since the contact between the protruding piece 5a and the second movable mold 1B can be favorably maintained, the heat of the decorative sheet 5 can be surely transferred to the second movable mold 1B through the protruding piece 5a, and the edge portion 5b of the protruding piece 5a is The heat can be reliably and efficiently dissipated to the second movable mold 1B and the slider 17. Therefore, it is possible to prevent the decorative sheet 5 from being melted. Further, it is possible to prevent the decorative sheet 5 from floating up and "curling" or the like, and it is possible to manufacture a multilayer molded article favorably. Here, a specific production method of a multilayer molded article (two-color molded article) using the multilayer molding die of the present invention will be described. . In the present embodiment, the molded decorative sheet 5 is placed on the first fixed mold 3 by the robot device 15. On the other hand, in the second fixed mold 7, the decorative film 12 of a certain length is fed by the film feeding device 13, and the decorative film 12 of a certain length is taken up by the film winding device 14, so that the decorative film 12 and the decorative film 12 are The second fixed mold 7 is opposed to each other (see Fig. 1). Further, the decorative film 12 is pressed against the edge of the second fixed mold 7 by the holder 16, and the decorative film 16 is heated by a heating device (not shown), and is attracted by suction. When the decorative film 12 is adhered to the concave portion of the second fixed mold 7 (not shown), the first resin layer 4 and the decorative sheet 5 are held by the movable mold 1 opposed to the second fixed mold 7. The primary molded product F1 (which is welded to the upper surface of the first resin layer 4). Next, as shown in FIG. 2, the rotary disk 9 is moved to the fixed disk 8 side, and the first movable mold 1A and the first fixed mold 3 are clamped, and the second movable mold 1B and the second fixed mold 7 are combined. mold. Thus, the first cavity 2 is formed between the decorative sheet 5 supported by the first fixed mold 3 and the first movable mold 1A. At the same time, the second cavity 6 is formed between the decorative film 1 2 supported by the second fixed mold 7 and the primary molded product F1 supported by the second movable mold 1B. At the same time, when the mold clamping is performed, the slider 17 pressed by the holder 16 is slidably moved toward the protruding piece 5a side, and the slider block 7 (an example of the pressing portion) and a part of the other movable mold 1 are pressed. An example of the portion) is to hold the edge portion 5b of the protruding piece 5a. As shown in Fig. 3, the first resin injected from the first gate 10 is injected into the first cavity 2, and the first resin layer 4 is formed on the lower surface of the decorative sheet 5 to constitute the next primary molded product F1. On the other hand, as shown in Fig. 3 and Fig. 6, the second resin injected from the second filling port 11 is injected into the second cavity 6 to form the decorative film 12, the primary molded article F1, and the second resin layer. 23 - The secondary molded product F2 composed of the body. Then, as shown in Fig. 4, the rotary disk 9 is separated from the fixed disk 8, and the movable molds 1 of both of them are opened from the first fixed mold 3 and the second fixed mold 7. The base sheet 12a of the decorative film 12 thus opened is naturally peeled off from the decorative portion 1 2b, and the secondary molded article F2 in which only the decorative portion i 2b is transferred to the second tree -17-201020094 grease surface is obtained. Then, the cured secondary molded article F2 is removed from the movable mold 1, and the rotary disk 9 is rotated by 180 degrees. Then, the secondary molded article F2 composed of the first resin layer 4, the decorative sheet 5, the second resin layer 23, and the decorative portion 12b of the decorative film 12 is laminated in this order. The decorative portion 1 2b transferred to the secondary molded article F2 is composed of an adhesive layer welded to the second resin layer 23, a pattern layer in the middle, and a peeling protective layer on the outermost side. Further, as a finishing step, the protruding piece 5a which protrudes outside the secondary molded product F2 is cut by an instrument such as a scissors (see Fig. 7). [Second Embodiment] The second embodiment shown in the following Figs. 8 to 12 is mainly explained with respect to the structure different from the structure of the first embodiment, and the description of the same structure will be omitted. As shown in Fig. 8, the multilayer molding die used in the second embodiment includes a first fixed mold 33, a second fixed mold 37 (an example of a second mold), and a pair of movable molds 31 ( An example of the first mold). Contrary to the case of the first embodiment, the fixed molds 3 3 and 3 7 are convex male molds, and the pair of movable molds 31 are concave female molds. As shown in Fig. 9, when the first fixed mold 33 and the first movable mold 31A are clamped, the first mold cavity 32 for accommodating the first resin can be formed; and the second fixed mold 37 and the second movable mold 31B can be formed. The mold clamping is performed to form the second cavity 36 for accommodating the second resin. The auxiliary cavity 38 formed in the movable mold 31 can accommodate the protruding piece 35a of the decorative sheet 35 when the second movable mold -18-201020094 31B and the second fixed mold 37 are closed. Further, the second gate 39 for injecting the second resin is provided at a position where the second resin is surely injected into the second cavity 36 through the auxiliary cavity 38. More specifically, as shown in Fig. 12, when the second movable mold 31B and the second fixed mold 37 are clamped, a second gate is formed between the second movable mold 31B and the second fixed mold 37. The communication channel 40 in which the 3 9 and the 2nd cavity 3 6 communicate with each other. The second resin injected from the second gate 39 is injected into the second cavity 36 via the communication passage 40. The communication flow path 40 includes a linear first flow path portion 41 that reaches the proximal holder 16 from the second gate 39, and has a substantially C-shape that is wound around the periphery of the holder 16. The second flow path portion 42 extends from the second flow path portion 42 toward the auxiliary cavity 38 of the distal holder 16. Similarly to the auxiliary cavity 19 of the first embodiment, the auxiliary cavity 38' which can accommodate the protruding piece 35a is formed so as to be gradually thicker from the second flow path portion 42 to the primary molded product F1. As a result of the communication flow path 40, when the second resin is injected, the second resin is always brought into contact with the decorative sheet 35 through the space surrounded by the protruding piece 35a and the second fixed mold 37. Therefore, even if the high temperature second resin contacts the decorative sheet 35 and the heat of the second resin is transmitted to the decorative sheet 35', the heat received by the decorative sheet 35 can be efficiently transmitted to the movable mold 31 by the large-area protruding sheet 35a. Therefore, the decorative sheet 35 does not become excessively high in temperature, and the decorative sheet 35 can be prevented from being melted and patterned. Further, 'at the time of mold clamping, since the edge portion 35b' of the protruding piece 35a is fixed between the sliding block 丨7 and the second movable mold 31B, 19-201020094 can prevent the decorative sheet 35 from occurring when the second resin is injected. The phenomenon of positional offset. Thus, since the contact between the protruding piece 35a and the second movable mold 31B can be favorably maintained, the heat of the decorative piece 35 can be surely transferred to the second movable mold 31B through the protruding piece 35a, and the edge portion 3b of the protruding piece 35a The heat can be surely and efficiently dissipated to the movable mold 31 and the slider 17. Therefore, the decorative sheet 35 can be prevented from being melted. Further, the decorative sheet 35 can be prevented from floating and "curling" or the like, and the multilayer molded article can be favorably produced. Next, a specific manufacturing method of the multilayer molded article of the second embodiment will be described. In the present embodiment, as shown in Fig. 8, in the first movable mold 31A, the decorative film 12 of a certain length is fed by the film feeding device 13, and the decorative film of a certain length is taken up by the film winding device 14. 12, the decorative film 12 is opposed to the first movable mold 31A, and the decorative film 12 is pressed against the edge of the first movable mold 31A by the holder 16, and the decorative film 12 is heated by the heating device, and The decorative film 12 is brought into close contact with the concave portion of the first movable mold 31A by the suction device. At this time, the decorative sheet 35 is held by the robot device 15 in the first fixed mold 33 opposed to the first movable mold 31A. In the other movable mold 31, the primary molded product F1 (the first resin layer 34 and the decorative sheet 35) formed in the previous step is held. Then, as shown in Fig. 9, the rotary disk 9 is moved toward the fixed disk 8 side, and the first movable mold 31A and the first fixed mold 33 are clamped, and the second movable mold 31B and the second fixed mold 37 are combined. mold. Thus, the i-th cavity 32 is formed between the decorative film 12 supported by the first movable mold 31A by -20-201020094 and the decorative sheet 35 supported by the first fixed mold 33. At the same time, the second cavity 36 is formed between the primary molded product F1 and the second fixed mold 37 supported by the second movable mold 31B. When the mold clamping is performed, the slider 17 pressed by the holder 16 is slidably moved toward the protruding piece 35a side, and the slider 17 (an example of the pressing portion) and a part of the other movable mold 31 (the pressing portion) For example, the edge portion 35b of the protruding piece 35a is held by the holder. As shown in Fig. 10, 'the first resin injected from the first gate 49 is injected into the first cavity 32, and the first resin layer 34' is formed between the decorative film 12 and the decorative sheet 35 to obtain a primary molded article. F1. On the other hand, as shown in FIG. 1 and FIG. 12, the second resin injected from the second gate 39 is injected into the second cavity 36, and the primary molded product F1 and the second resin layer 43 are formed. The molded product formed. Then, as shown in Fig. 11, the rotary disk 9 is separated from the fixed disk 8, and the movable molds 31 of both of them are opened from the first fixed mold 33 and the second fixed mold 37. By the mold opening, the base sheet 12a of the decorative film 12 of the secondary molded product F2 supported by the second fixed mold 37 is naturally peeled off, and a secondary molded article in which only the decorative portion 12b is transferred to the surface of the second resin is obtained. F2. Then, the cured secondary molded article F2 is removed from the movable mold 31, and the rotary disk 9 is rotated by 180 degrees. Then, the secondary molded product F2 composed of the second resin layer 43, the decorative sheet 35, the first resin layer 34, and the decorative portion 12b of the decorative film 12 is sequentially laminated. [Third Embodiment] -21 - 201020094 The multilayer molding die used in the third embodiment includes a pair of movable molds 51A and 51B (an example of the first mold) as shown in Figs. 13 to 18 The first fixed mold 52 and the second fixed mold 53 (an example of the second mold). Fig. 13 to Fig. 18 show the state after the first resin and the second resin are injected. In the third embodiment, only the decorative sheet 56' is not used as the decorative film 12. The pair of movable molds 51A and 51B which are the same as the above-described embodiment are not supported by the rotary disk 9. The first fixed mold 52 and the second fixed mold 53 are supported by the fixed disk 8. When the first fixed mold 52 holding the decorative sheet 56 and the first movable mold 51A are clamped, the first cavity 54 is formed between the decorative sheet 56 and the first movable mold 51A. Figs. 14 and 15 show a state in which the first resin (5 5) is injected into the first cavity 54 to obtain the molded article F1. On the other hand, in the second fixed mold 53, the second movable mold 51B holding the primary molded product F1 (obtained by injection/molding in the previous step) is clamped, and the decorative sheet 56 of the primary molded product F1 and A second cavity 64 is formed between the second fixed molds 53. Fig. 17 and Fig. 18 show a state in which the second resin (65) is injected into the second cavity 64 to obtain the secondary molded article F2. As shown in Fig. 18, between the movable mold 51 and the second fixed mold 53, an auxiliary cavity 71 for accommodating the protruding piece 56a of the decorative sheet 56 is formed, and the second gate 66 for injecting the second resin is provided. The second resin is surely injected into the position of the second cavity 64 through the auxiliary cavity 71. As shown in Fig. 13, the protruding piece 56a of the decorative sheet 56 protrudes from substantially the entire length of one side of the decorative sheet 56 and has a rectangular shape. As shown in the figure -22-201020094 14 (section 11-II of Fig. 13), a long side of the convex portion 51b is formed between the parting surface 51a of the first movable mold 51A and the convex portion 51b. A groove 63 having a V-shaped cross section. On the other hand, between the parting surface 52a of the first fixed mold 52 and the concave portion 52b, a ridge 62 having a V-shaped cross section in which the groove 63 is fitted is formed. Therefore, when the first movable mold 51A and the first fixed mold 52 are closed, one side surface 62a of the ridge 62 comes into contact with one side surface 63a of the groove 63 while being passed through the other side 62b of the ridge 62 (pressing portion) As an example, the other side surface 63b of the groove 63 (an example of a pressing portion) grips the protruding piece 56a of the decorative sheet 56. As shown in Fig. 13, Fig. 14, and Fig. 15 (I-Ι cross section of Fig. 13), when the first movable mold 51A and the first fixed mold 52 are clamped, the first movable mold 51A and the first one are A first communication passage 61 is formed between the fixed molds 52 (for connecting the first gate 57 and the first cavity 54). The first resin injected from the first gate 57 is injected into the first cavity 54 through the first communication channel 61. The first communication passage 61 includes a linear first flow path portion 58 formed between the parting surface 51a of the first movable mold 51A and the parting surface 52a of the first fixed mold 52, and is formed in the ridge 62. A linear second flow path portion 59 between one side surface 62a and one side surface 63a of the groove 6.3 is formed between the other side surface 62b of the ridge 62 and the other side surface 63b of the groove 63. The third flow path portion 60. The third flow path portion 60 is formed in a gradually thicker shape from the second flow path portion 59 to the primary molded product F1. The second flow path portion 59 is connected to the first flow path portion 58 in a meandering manner, and the third flow path portion 60 is connected to the second flow path portion in a meandering manner. 23- 59 ° 201020094 On the other hand, as shown in FIG. (Section IV-IV of Fig. 16), a rib 72 having a V-shaped cross section in which the groove 63 is fitted is formed between the split surface 53a of the second fixed mold 53 and the recess 53b. Therefore, when the second movable mold 51B and the second fixed mold 53 are clamped, one side surface 72a of the ridge 72 comes into contact with one side surface 63a of the groove 63 while being passed through the other side 72b of the ridge 72 (pressing portion) As an example, the other side surface 63b of the groove 63 (an example of a pressing portion) grips the protruding piece 56a of the decorative sheet 56. As shown in Fig. 16, Fig. 17, and Fig. 18 (the ΙΙΙ-ΠΙ cross section of Fig. 16), when the second movable mold 51B and the second fixed mold 53 are clamped, the second movable mold 51B and the second mold are used. A second communication passage 70 is formed between the fixed molds 53 (for connecting the second gate 66 and the second cavity 64 to each other). The second resin injected from the second gate 66 is injected into the second cavity 64 through the second communication passage 70. The second communication passage 70 includes a linear first flow path portion 67 formed between the parting surface 51a of the second movable mold 51B and the parting surface 53a of the second fixed mold 53, and is formed on the protrusion 72. The linear second flow path portion 68 between one side surface 72a and one side surface 63a of the groove 3, and the third side between the other side surface 72b of the ridge 72 and the other side surface 63b of the groove 63 Flow path portion 69. The third flow path portion 69 is formed in a gradually thicker shape from the second flow path portion 68 toward the primary molded product F1. The second flow path portion 68 is connected to the first flow path portion 67 in a meandering manner, and the third flow path portion 69 is connected to the second flow path portion 68 in a meandering manner. Between the other side surface 72b of the ridge 72 and the other side surface 63b of the groove 63, an auxiliary cavity 71 for accommodating a part of the protruding piece 56a of the decorative sheet 56 is formed. Here, the third flow path portion 69 (a part of the protruding piece 56a of the decorative sheet 56201020094 is exposed) constitutes the auxiliary cavity 71. As a result of forming the communication channel 40 as described above, when the second resin is injected, the second resin is always brought into contact with the decorative sheet 56 by the space surrounded by the protruding piece 56a in the vicinity of the auxiliary cavity 71 and the second fixed mold 53. Therefore, even if the high temperature second resin contacts the decorative sheet 56 and the heat of the second resin is transmitted to the decorative sheet 56, the heat received by the decorative sheet 56 can be efficiently transmitted to the movable mold 51 through the large-area protruding piece 56a. Since the heat is dissipated, the decorative sheet 56 does not become excessively high in temperature, and the decorative sheet 56 can be prevented from being melted. Further, at the time of mold clamping, as shown in Figs. 13 and 14, the both side portions 56c, 56d of the protruding piece 56a which are not overlapped with the third flow path portion 60 are held by the first movable mold 51A and The first fixed mold 52 is between. Therefore, when the first resin is injected from the first gate 57 toward the first cavity 54, and the primary molded product 55 is formed on the lower surface of the decorative sheet 56, the first resin does not enter between the other side surface 62b. gap. In addition, as for the second fixed mold 53 and the second movable mold 51B, as shown in Figs. 16 and 17, the both side portions 56f and 56g of the protruding piece 56a which are not overlapped with the third flow path portion 69 are The holding is fixed between the movable mold 51 and the second fixed mold 53. Therefore, when the second resin injected from the second gate 66 is injected into the second cavity 64 and the secondary molded article F2 is formed on the upper surface of the decorative sheet 55, the second resin does not enter the side surface 63b of the other side. The gap between them. Then, the second movable mold 51B and the second fixed mold 53 are opened, and the secondary molded product F2 is taken out from the second movable mold 51B. Further, as the finishing, it is a secondary molded article which is removed from the movable mold 51! ;2 of -25 - 201020094
外部形成突出之突出片56a、第1成形品55及第2成形品 65的突出部分予以切斷（參照第19圖）。這時，由於突出 片56a、第1成形品55及第2成形品65的突出部分是從 二次成形品F2之一側的長邊突出，只要實施一次切斷即 可，而能謀求步驟減少及生產性提昇。此外，由於利用第 1可動模具51A及第1固定模具52、第2可動模具51B及 第2固定模具53來挾持突出片56a，因此不須另外設置用 來挾持突出片56a的構造，而能謀求構造的簡單化。再者 A ，也能設置複數個澆口來進行複數個成形品的取出。 〔第四實施形態〕 以下的第22圖〜第29圖所示的第四實施形態，主要 是說明與第一實施形態的構造不同的構造，對於相同的構 造則省略其說明。 第29(a)圖係槪略顯示，從利用該多層成形用模具所 製作出的二次成形品F2切除不要的部分而獲得的完成品 @ 的外觀。從第29(b)圖（第29(a)圖的B-B截面圖）可知，藉 由該多層成形用模具所製作的二次成形品F2是具有：最 內側的第1樹脂層44、位於第1樹脂層44的外側之裝飾 片45(中間層的一例）、其外側的第2樹脂層23、位於最外 側的裝飾薄膜1 2。 第1樹脂層44是不透明的，在其中央附近形成矩形 的框。在裝飾片45、第2樹脂層23、裝飾薄膜12上並未 形成框，而是由透明的樹脂所構成。因此，將該二次成形 -26- 201020094 品F2例如應用於行動電話的顯示用面板等的情況’可從 第1樹脂層44的矩形框透視液晶畫面（未圖示）等° 第四實施形態所使用的多層成形用模具’如第22圖 所示係具備：被固定盤8支承的第1固定模具182和第2 固定模具183(都是第2模具的一例）、以及被旋轉盤9支 承的一對的可動模具181A、181B(第1模具的一例）。相 對於固定盤8，旋轉盤9是形成可旋轉且能進退。在此’ 固定模具182、183是凹狀的母模具，一對的可動模具 181A、181B是凸狀的公模具。 如第22圖所示，在第1固定模具182的凹部，卡止 著事先藉由電鑄而製作出的裝飾片45，在第2固定模具 183的凹部配置裝飾薄膜12，且能藉由夾持具16進行固 定。 另一方面，在第2可動模具181B的凸部，卡止著在 先前步驟所製得的一次成形品F1。該一次成形品F1，是 具有與第24圖所示的一次成形品F 1相同的形狀。 在第22圖僅圖示出夾持具16當中的兩部位，亦即將 裝飾薄膜12固定在第2固定模具183的凹部上方的部位 及凹部下方的部位，但實際上如第28圖所例示，由於夾 持具16大致呈矩形框狀，可在圍繞第2固定模具183的 凹部之矩形緣的全周固定裝飾薄膜12。關於該夾持具16 的構造，在本說明書所記載的所有的實施形態是共通的。 接著，如第23圖所示，若將旋轉盤9朝向固定盤8 按壓’第1固定模具182和第1可動模具18iA會進行合 -27- 201020094 模’同時第2固定模具183和第2可動模具181B會進行 合模。 藉由第1固定模具182和第1可動模具181A的合模 ，如第23圖的上部所示，在卡止於第1固定模具182的 裝飾片45和第1可動模具181A之間，會形成用來收容第 1樹脂的第1模穴132。只要在第1模穴132注入第1樹 脂，第1樹脂會熔接於裝飾片45的內面，而獲得裝飾片 45和第1樹脂層44所構成的一次成形品F1 (第一步驟的 一例）。第23圖是顯示已注入第1樹脂層44後的狀態。 另一方面，如第23圖的下部所示，藉由第2固定模 具183和第2可動模具181B的合模，在卡止於第2可動 模具181B的一次成形品F1和卡止於第2固定模具183的 裝飾薄膜12之間會形成第2模穴136’而對其注入第2樹 脂（第2步驟的一例，圖中是顯示注入後的第2樹脂層23) 。實際上，在注入第2樹脂前，裝飾薄膜12被吸附在第2 固定模具183的凹部內面。爲了實現此吸附’是在第2固 定模具183的凹部設置多數個微細的吸引孔（未圖示），並 設置可透過吸引孔而在第2固定模具183的凹部內面產生 負壓之減壓泵（未圖示）。這樣的吸附機構’也能設置在第 1固定模具1 8 2和一次成形品F 1之間。 如第26圖及第27圖（第23圖的主要部位的放大圖）所 示，在裝飾片45形成2個突出片。其中一方’是從裝飾 片45的四邊緣部的一部分呈直線狀延伸的第1突出片45 a ;另一方，是從相反側的一部分往外彎曲而形成的第2突 -28- 201020094 出片45b。在第22圖和第23圖所示的成形步驟之間，第 1突出片45a和第2突出片45b是一起按壓於第1固定模 具182的內面。如第29圖所示，在最終的二次成形品F2 將突出片45a、45b切除。 如第27圖所示，第1突出片45a，在第2固定模具 183和第2可動模具181B合模時，是被收容在形成於第2 可動模具181B之第1輔助模穴136a。 此外，用來注入第2樹脂之第2澆口 139的設置位置 是設定成：使第2樹脂一定要透過收容有第1突出片45 a 的第1輔助模穴136a的區域來注入第2模穴136。 如第26圖所示，第2突出片45b，在第1固定模具 182和第1可動模具181A合模時，是被收容在形成於第1 可動模具181A之第2輔助模穴132a的一部分。 在第23圖所示的步驟注入之第1樹脂及第2樹脂的 固化完成後，如第24圖所示，使旋轉盤9離開固定盤8， 使一對的可動模具181A、181B分別和第1固定模具182 、第2固定模具183進行開模。 在此狀態下，藉由第1可動模具181A的凸部來支承 成形出的一次成形品F1，藉由第2可動模具181B的凸部 來支承成形好的二次成形品F2。 將二次成形品F2從第2固定模具183取出，如第25 圖所示，讓旋轉盤9旋轉180°，可反覆進行從第22圖起 的步驟。 對於第24圖之取出後的二次成形品F2，若進行突出 -29 - 201020094 片45a、45b的切除操作等的處理，可獲得第29圖所示的 外觀之二次成形品F2(完成品）。 在此再度詳細地說明第22圖和第23圖的步驟。 首先，如第23圖及第26圖所示，藉由第1固定模具 182和第1可動模具181A的合模，在兩模具182、181A 之間形成讓第1澆口 1 3 8和第1模穴1 3 2互相連通的連通 流路140。連通流路140是包含：與第1澆口 138的出口 直接連通之直線狀的第1流路部分140A、與第1模穴132 Λ 直接連通之直線狀的第2流路部分140Β。第2流路部分 14 0Β和第1流路部分140Α，是以彼此大致平行的方式延 伸，或是互相連結成曲柄狀。在相當於連結邊界之第1固 定模具182的內面形成有：沿著第1樹脂的進入方向朝固 定盤8呈梯級狀縮入之退縮部18 2Χ。而且，裝飾片45的 第2突出片45b的前端，是以被該退縮部182Χ按壓的方 式與該退縮部18 2X相對置，藉此可防止第1樹脂的流動 造成裝飾片45的上浮、「捲曲」等。退縮部182X的深度 ❹ 是超過裝飾片45的厚度。 接著，如第23圖及第27圖所示，藉由第2固定模具 183和第2可動模具181B的合模，在兩模具183、181B 之間形成讓第2澆口 139和第2模穴136互相連通的連通 流路142。連通流路142是藉由第2輔助模穴136a所形成 ，且包含：從第2澆口 139出發而延伸到近側的夾持具16 之直線狀的第1流路部分1 42 A、沿著夾持具1 6下方的側 面16b而以接近旋轉盤9的方式進入之第2流路部分 -30- 201020094 142B、沿著夾持具16的上面16c而朝圖的上方延伸之第 3流路部分142C、沿著夾持具16的上方側面16d而接近 第2固定模具183之第4流路部分142D。 連通流路142的最終部位之第4流路部分142D，由 於是朝向第2固定模具183而如圖所示大致橫向延伸，在 第2固定模具183和第2可動模具181B的邊界面’第4 流路部分142D的終端部（面對突出片之流路部位的一例） 和第2模穴136的入口部彼此會以無夾角的方式呈大致直 線狀地連接。具體而言，第27圖所示的夾持具16的圖中 上方側面16d的基端部，會和最終的二次成形品F2端面 的位置在圖中的S點成爲一致。 在第4流路部分142D，沿著第2樹脂的進入方向’ 形成有朝第2可動模具181B的中心線側呈梯級狀縮入的 退縮部142X(段差狀凹部的一例）。而且，裝飾片45的第 1突出片45a的前端，是以被該退縮部142X按壓的方式 與退縮部142X相對置，如此可防止第2樹脂的流動造成 裝飾片45發生上浮、「捲曲」等。退縮部142X的深度是 超過裝飾片45的厚度。 如此般構成連通流路142的結果，在注入第2樹脂時 ，第2樹脂會始終通過被第1突出片45a和夾持具16所 挾持的空間而接觸第2模穴136內的裝飾片45。因此’即 使高溫的第2樹脂接觸裝飾片45而使第2樹脂的熱傳遞 至裝飾片45，裝飾片45所受的熱，會透過突出片45 a(沿 著樹脂的進入方向橫向變寬而具備漸粗的形狀）而朝第2 201020094 可動模具181B高效率地散熱，因此第2模穴136內的裝 飾片45不會變得過於高溫，可防止嵌入最終二次成形品 F2之裝飾片45的本體部分發生熔融及圖案變形等。此外 ，由於第1突出片4 5a具有漸粗的形狀，從第2樹脂傳遞 至裝飾片45的第1突出片45a的熱，會先沿著第1突出 片45a的寬度方向擴散後再傳遞至第1突出片45a以外的 裝飾片45的本體，如此也能防止裝飾片45的局部發生高 溫的現象。 此外，如前述般，由於第4流路部分142D的終端部 和第2模穴136的入口彼此是以無夾角的方式呈大致直線 狀地連接，在第2步驟從第2澆口 139注入的第2樹脂， 是在面對第1突出片45 a的第4流路部分1UD沿著模穴 136連接的狀態下，沿著第1突出片45a的延伸方向注入 。亦即，這時的第2樹脂，不會以正面撞擊的方式接觸裝 飾片45的第1突出片45a及嵌入最終二次成形品F2的本 體部位，而是一邊沿著裝飾片45的本體部位平順地流動 一邊進入。因此，比起從第2澆口 139注入的第2樹脂一 邊以正面撞擊的方式接觸裝飾片45 —邊進入第2模穴136 的構造，第2樹脂在裝飾片45的附近發生沉滯的可能性 減少，而進一步降低第2樹脂的熱對裝飾片45帶來的影 響。 再者，如前述般，在第27圖所示的夾持具16之圖中 的上方側面1 6d之基端部，是與最終的二次成形品F2的 端面一致。亦即，裝飾薄膜12，到嵌入最終一次成形品 -32- 201020094 F2的本體部分之裝飾薄膜12部位的前方處爲止’都被夾 持具16按壓在第2固定模具183上，因此可抑制裝飾薄 膜12從第2固定模具183的凹部內面上浮的現象。 〔其他實施形態〕 (1) 在上述各實施形態所例示的構造，對於用來保持第 1樹脂層4、34、55和裝飾片5、35、56的模具1、31、 51，是讓形成於裝飾片5、35、56的突出片5a、35a、5 6a 接觸，並透過被突出片5a、35a、56a和其他模具7、37、 5 3 (與模具1、3 1、5 1組合）所挾持的空間來注入第2樹脂 。然而，也能取代前述構造，而將突出二次成形品F2外 部的突出片形成於第1樹脂層4、34、55，對於用來保持 第1樹脂層4、.34、55和裝飾片5、35、56的模具1、31 、51，是讓第1樹脂層4、34、55的突出片接觸，並透過 被突出片和其他模具7、37、53(與模具1、31、51組合） 所挾持的空間來注入第2樹脂亦可。 (2) 在上述各實施形態所例示的構造，是在藉由注入第 1樹脂而成形出的第1樹脂層4、34、55的一面設置裝飾 片5、35、56，在裝飾片5、35、56之與第1樹脂層4、 34、55相反側的面上，藉由注入第2樹脂來製造二次成形 品F2。但本發明並不限於此構造，例如，在藉由注入第1 樹脂所成形出的一次成形品的一面，藉由注入第2樹脂來 成形出二次成形品，在二次成形品的一面設置裝飾片，在 該裝飾片之與二次成形品相反側的面上進行第3樹脂的注 -33 - 201020094 入，藉此來製造三層成形品亦可。總而言之，可適用於進 行多層的樹脂注入而製造多層成形品的方法。 (3) 在上述各實施形態例示出，裝飾層是由裝飾片5、 35、56所構成，但取代此構造，使裝飾層是由裝飾薄膜所 構成，且在該裝飾薄膜形成突出多層成形品外部的突出片 亦可。. (4) 在上述各實施形態所例示的構造，是在二次成形品 F2的外表面設置裝飾薄膜12(熱轉印箔），但取代此構造 ，在二次成形品F2的外表面也設置裝飾片亦可。 (5) 在上述各實施形態所例示的構造，是在裝飾片5、 35、56之另一側的面上設置第1樹脂層4、34、55，但在 第1樹脂層4、34、55上，例如將用來嵌合於行動電話的 框體之嵌合部一體成形亦可。進一步，在第1樹脂層4、 34、55之另一側的面上設置裝飾薄膜、裝飾片亦可。 (6) 在第一、第二實施形態所例示的構造，固定手段是 由挾持裝飾片5的緣部5b之滑動塊17所構成，但並不限 定於該構造，例如，固定手段亦可爲吸引緣部5b的吸引 手段。 (7) 在上述第一實施形態所例示的多層成形機，是具備 :具有一對的可動模具1而能橫向進退且能繞橫向的軸芯 旋轉之旋轉盤9、具有第1固定模具3及第2固定模具7 之固定盤8。然而，並不限定於這種多層成形機。所使用 的多層成形機，是具備：具有可動模具且能沿上下方向進 退之第1可動盤、具有第1固定模具及第2固定模具且能 -34- 201020094 橫向滑動之第2可動盤之多層成形機亦可。或是具備：具 有可動模具而能橫向進退之可動盤、以背對背的方式安裝 第1固定模具及第2固定模具且能繞上下方向的軸芯旋轉 之旋轉盤之多層成形機亦可。 (8) 作爲第三實施形態的變形例，例如第20圖、第21 圖所示，在可動模具51的分模面51a和凸部51b之間形 成可動模具51側的傾斜部73，在第1固定模具52的分模 面52a和凹部52b之間形成與傾斜部73相對向的第1固 定模具52側的傾斜部74，在第2固定模具53的分模面 53a和凹部53b之間形成與傾斜部73相對向的第2固定模 具53側的傾斜部75，在可動模具51和第1固定模具52 之間形成用來將從第1澆口 5 7射出的第1樹脂注入第1 模穴54之第1連通流路76，在可動模具51和第2固定模 具53之間形成用來將從第2澆口 66射出的第2樹脂注入 第2模穴64之第2連通流路77亦可。 (9) 目前爲止所說明的情況，是使用不同色的2個樹脂 之雙色成形的實施例，但一次成形用的樹脂和二次成形用 的樹脂不一定要是不同顏色，例如雙方都是使用透明同色 的樹脂，在二個樹脂之間挾持裝飾片而進行多層成形亦可 。再者，一次成形用的樹脂及二次成形用的樹脂是使用種 類及顏色都相同的樹脂亦可。 本發明適用於：在配置於中間層（熔接於第1樹脂層） 的另一面之模穴注入樹脂而形成第2樹脂層時，可抑制中 間層的飛出澆口及一次成形品發生再熔融之多層成形技術 -35- 201020094 【圖式簡單說明】 第1圖係第一實施形態的 u多層成形用模具的整體之側 截面圖。 第2圖係第一實施形態的多層成形用模具的整體之側 截面圖。 第3圖係第一實施形態的多層成形用模具的整體之側 截面圖。 第4圖係第一實施形態的多層成形用模具的整體之側 截面圖。 第5圖係第3圖的I-Ι線截面圖。 第6圖係第5圖的I-Ι線截面圖。 第7圖係第一實施形態的多層成形品的整體立體圖。 第8圖係第二實施形態的多層成形用模具的整體之側 截面圖。 第9圖係第二實施形態的多層成形用模具的整體之側 截面圖。 第10圖係第二實施形態的多層成形用模具的整體之 側截面圖。 第11圖係第二實施形態的多層成形用模具的整體之 側截面圖。 第12圖係第二實施形態之可動模具和第2固定模具 合模時的側截面圖 -36- 201020094 第13圖係第三實施形態之可動模具和第1固定模具 合模時的俯視截面圖。 第14圖係第13圖的II-II線截面圖。 第15圖係第13圖的I-Ι線截面圖。 第16圖係第三實施形態之可動模具和第2固定模具 合模時的俯視截面圖。 第17圖係第16圖的IV-IV線截面圖。 φ 第18圖係第16圖的ΙΙΙ-ΙΠ線截面圖。 第1 9圖係第三實施形態的多層成形品的整體立體圖。 第20圖係其他實施形態之可動模具和第1固定模具 合模時的側截面圖。 第21圖係其他實施形態之可動模具和第2固定模具 合模時的側截面圖。 第22圖係第四實施形態的多層成形用模具的整體之 側截面圖。 φ 第2 3圖係第四實施形態的多層成形用模具的整體之 側截面圖。 第24圖係第四實施形態的多層成形用模具的整體之 側截面圖。 第25圖係第四實施形態的多層成形用模具的整體之 側截面圖。 第26圖係第23圖的第1澆口附近的部分放大圖。 第27圖係第23圖的第2澆口附近的部分放大圖。 第28圖係第22圖的第2固定模具之立體圖。 -37- 201020094 第29(a)(b)圖係第四實施形態所製得的二次成形品的 槪略圖。 【主要元件符號說明】 1、 31、51、181:可動模具 3、 33、52、182:第1固定模具 7、37、53、183:第2固定模具 2、 32、 54、 132 ：第 1 模穴 6、36、64、136 ：第 2 模穴 4、 34、44 :第1樹脂層 23、43:第2樹脂層 5、 35、56 :裝飾片（裝飾層、中間層） 5a、 35a、 45a、 45b、 56a ：突出片 5b、35b ：緣部 11、 39、 66、 138、 139:澆口 12 :裝飾薄膜（裝飾層） 16 :夾持具 1 7 :固定手段 19、38、71、132a、136a:輔助模穴 142X :退縮部（段差狀的凹部） F 1 : —次成形品 F 2 :二次成形品 -38-The projecting portion of the projecting piece 56a, the first molded product 55, and the second molded product 65 which are formed to protrude outward is cut (see Fig. 19). In this case, the protruding portion of the protruding piece 56a, the first molded product 55, and the second molded product 65 protrudes from the long side of one side of the secondary molded product F2, and can be cut once, and the number of steps can be reduced. Productive improvement. In addition, since the protruding piece 56a is held by the first movable mold 51A, the first fixed mold 52, the second movable mold 51B, and the second fixed mold 53, the structure for holding the protruding piece 56a is not separately provided, and the structure can be obtained. The simplification of the construction. Furthermore, A can also be provided with a plurality of gates for taking out a plurality of molded articles. [Fourth embodiment] The fourth embodiment shown in the following Figs. 22 to 29 is mainly for explaining a structure different from that of the first embodiment, and the description of the same configuration will be omitted. Fig. 29(a) is a view showing the appearance of the finished product @ obtained by cutting the unnecessary portion from the secondary molded article F2 produced by the multilayer molding die. From the 29th (b)th view (the BB cross-sectional view of Fig. 29(a)), the secondary molded article F2 produced by the multilayer molding die has the innermost first resin layer 44 and is located at the A decorative sheet 45 (an example of an intermediate layer) on the outer side of the resin layer 44, a second resin layer 23 on the outer side, and a decorative film 12 on the outermost side. The first resin layer 44 is opaque and forms a rectangular frame near the center thereof. The decorative sheet 45, the second resin layer 23, and the decorative film 12 are not formed with a frame but are made of a transparent resin. Therefore, when the secondary molding -26-201020094 product F2 is applied to, for example, a display panel of a mobile phone, etc., a liquid crystal screen (not shown) can be seen from a rectangular frame of the first resin layer 44. Fourth Embodiment As shown in Fig. 22, the multilayer molding die used has a first fixed mold 182 and a second fixed mold 183 supported by the fixed disk 8 (both are examples of the second mold), and is supported by the rotary disk 9. A pair of movable molds 181A and 181B (an example of a first mold). The rotary disk 9 is formed to be rotatable and movable forward and backward with respect to the fixed disk 8. Here, the fixed molds 182 and 183 are concave mother molds, and the pair of movable molds 181A and 181B are convex male molds. As shown in Fig. 22, in the concave portion of the first fixed mold 182, the decorative sheet 45 which has been previously produced by electroforming is locked, and the decorative film 12 is placed in the concave portion of the second fixed mold 183, and can be sandwiched. Holder 16 is fixed. On the other hand, in the convex portion of the second movable mold 181B, the primary molded product F1 obtained in the previous step is locked. This primary molded product F1 has the same shape as the primary molded product F1 shown in Fig. 24. Only the two parts of the holder 16 are illustrated in Fig. 22, that is, the decorative film 12 is fixed to the portion above the concave portion of the second fixed mold 183 and the portion below the concave portion, but actually, as illustrated in Fig. 28, Since the holder 16 has a substantially rectangular frame shape, the decorative film 12 can be fixed over the entire circumference of the rectangular edge surrounding the concave portion of the second fixed mold 183. All the embodiments described in the present specification are common to the structure of the holder 16. Then, as shown in Fig. 23, when the rotary disk 9 is pressed toward the fixed disk 8 by the first fixed mold 182 and the first movable mold 18iA, the mold -27-201020094 mold is pressed, and the second fixed mold 183 and the second movable body are simultaneously moved. The mold 181B is clamped. The mold clamping of the first fixed mold 182 and the first movable mold 181A is formed between the decorative sheet 45 and the first movable mold 181A that are locked by the first fixed mold 182 as shown in the upper portion of FIG. The first cavity 132 for accommodating the first resin. When the first resin is injected into the first cavity 132, the first resin is welded to the inner surface of the decorative sheet 45, and the primary molded article F1 composed of the decorative sheet 45 and the first resin layer 44 is obtained (an example of the first step). . Fig. 23 is a view showing a state in which the first resin layer 44 has been injected. On the other hand, as shown in the lower part of Fig. 23, the primary molded product F1 and the second movable mold 181B are locked by the second fixed mold 183 and the second movable mold 181B. The second cavity 136' is formed between the decorative films 12 of the fixed mold 183, and the second resin is injected thereto (an example of the second step, in which the second resin layer 23 after the injection is shown). Actually, the decorative film 12 is adsorbed on the inner surface of the concave portion of the second fixed mold 183 before the second resin is injected. In order to achieve this adsorption, a plurality of fine suction holes (not shown) are provided in the concave portion of the second fixed mold 183, and a decompression that generates a negative pressure on the inner surface of the concave portion of the second fixed mold 183 through the suction hole is provided. Pump (not shown). Such an adsorption mechanism ' can also be provided between the first fixed mold 182 and the primary molded product F1. As shown in Fig. 26 and Fig. 27 (enlarged view of the main part of Fig. 23), two protruding pieces are formed on the decorative sheet 45. One of the 'b' is a first protruding piece 45a extending linearly from a part of the four edge portions of the decorative sheet 45, and the other is a second protrusion -28-201020094 which is formed by bending a part of the opposite side outward. . Between the forming steps shown in Figs. 22 and 23, the first projecting piece 45a and the second projecting piece 45b are pressed together on the inner surface of the first fixed mold 182. As shown in Fig. 29, the protruding pieces 45a, 45b are cut off at the final secondary molded article F2. As shown in Fig. 27, when the second fixed mold 183 and the second movable mold 181B are clamped, the first projecting piece 45a is housed in the first auxiliary cavity 136a formed in the second movable mold 181B. Further, the second gate 139 for injecting the second resin is placed at a position where the second resin is surely transmitted through the region of the first auxiliary cavity 136a in which the first protruding piece 45a is accommodated, and the second mold is injected. Hole 136. As shown in Fig. 26, when the first fixed mold 182 and the first movable mold 181A are clamped, the second projecting piece 45b is housed in a part of the second auxiliary cavity 132a formed in the first movable mold 181A. After the curing of the first resin and the second resin injected in the step shown in Fig. 23 is completed, as shown in Fig. 24, the rotary disk 9 is separated from the fixed disk 8, and the pair of movable molds 181A and 181B are respectively The fixed mold 182 and the second fixed mold 183 are opened. In this state, the formed primary molded product F1 is supported by the convex portion of the first movable mold 181A, and the formed secondary molded article F2 is supported by the convex portion of the second movable mold 181B. The secondary molded product F2 is taken out from the second fixed mold 183, and as shown in Fig. 25, the rotating disk 9 is rotated by 180°, and the step from Fig. 22 can be repeated. In the secondary molded product F2 after the removal of the embossed -29 - 201020094 sheets 45a and 45b, the secondary molded article F2 of the appearance shown in Fig. 29 can be obtained (finished product). ). The steps of Figs. 22 and 23 will be explained in more detail herein. First, as shown in Figs. 23 and 26, the first gate 1 138 and the first gate are formed between the two dies 182 and 181A by the mold clamping of the first fixed mold 182 and the first movable mold 181A. The communication channel 140 in which the cavity 1 3 2 communicates with each other. The communication passage 140 includes a linear first flow passage portion 140A that directly communicates with the outlet of the first gate 138, and a linear second flow passage portion 140 that directly communicates with the first cavity 132 Λ. The second flow path portion 140 Β and the first flow path portion 140 延 are extended substantially parallel to each other or connected to each other in a crank shape. On the inner surface of the first fixing mold 182 corresponding to the joint boundary, a retracting portion 18 2 缩 which is retracted in a stepped shape toward the fixing plate 8 along the entering direction of the first resin is formed. Further, the front end of the second protruding piece 45b of the decorative sheet 45 is opposed to the retracted portion 18 2X so as to be pressed by the retracted portion 182, thereby preventing the flow of the first resin from causing the decorative sheet 45 to float. Curl and so on. The depth ❹ of the retracted portion 182X is greater than the thickness of the decorative sheet 45. Next, as shown in FIGS. 23 and 27, the second gate 139 and the second cavity are formed between the two dies 183 and 181B by the mold clamping of the second fixed mold 183 and the second movable mold 181B. 136 is a communication flow path 142 that communicates with each other. The communication flow path 142 is formed by the second auxiliary cavity 136a, and includes a linear first flow path portion 1 42 A extending along the second gate 139 and extending to the proximal holder 16 The third flow path portion -30-201020094 142B that enters the side surface 16b below the holder 16 and enters the rotating disk 9 in a manner close to the rotating disk 9, and the third flow extending upward along the upper surface 16c of the holder 16 The path portion 142C approaches the fourth flow path portion 142D of the second fixed mold 183 along the upper side surface 16d of the holder 16. The fourth flow path portion 142D of the final portion of the communication flow path 142 extends substantially laterally as shown in the drawing toward the second fixed mold 183, and is at the boundary surface of the second fixed mold 183 and the second movable mold 181B. The end portion of the flow path portion 142D (an example of a flow path portion facing the protruding piece) and the entrance portion of the second cavity 136 are connected to each other in a substantially straight line shape without an angle. Specifically, the base end portion of the upper side surface 16d in the drawing of the holder 16 shown in Fig. 27 coincides with the position of the end face of the final secondary molded article F2 at the point S in the figure. In the fourth flow path portion 142D, a retracted portion 142X (an example of a stepped recessed portion) that is stepped in a stepped shape toward the center line side of the second movable mold 181B is formed along the entering direction of the second resin. Further, the front end of the first protruding piece 45a of the decorative sheet 45 is opposed to the retracted portion 142X so as to be pressed by the retracted portion 142X, thereby preventing the flow of the second resin from causing the decorative sheet 45 to float, "curl", and the like. . The depth of the retracted portion 142X is greater than the thickness of the decorative sheet 45. As a result of constituting the communication channel 142 as described above, when the second resin is injected, the second resin always contacts the decorative sheet 45 in the second cavity 136 by the space held by the first protruding piece 45a and the holder 16 . Therefore, even if the second resin having a high temperature contacts the decorative sheet 45 and the heat of the second resin is transferred to the decorative sheet 45, the heat received by the decorative sheet 45 passes through the protruding sheet 45a (wider in the direction in which the resin enters) Since the movable mold 181B is efficiently radiated toward the second 201020094 movable mold 181B, the decorative sheet 45 in the second cavity 136 does not become too high temperature, and the decorative sheet 45 embedded in the final secondary molded article F2 can be prevented. The body portion is melted, patterned, and the like. Further, since the first protruding piece 45a has a tapered shape, the heat transmitted from the second resin to the first protruding piece 45a of the decorative sheet 45 is first diffused in the width direction of the first protruding piece 45a and then transmitted to The main body of the decorative sheet 45 other than the first projecting piece 45a can also prevent a phenomenon in which a part of the decorative sheet 45 is heated. In addition, as described above, the end portion of the fourth flow path portion 142D and the entrance of the second cavity 136 are connected substantially linearly without an angle, and are injected from the second gate 139 in the second step. The second resin is injected along the extending direction of the first protruding piece 45a in a state where the fourth flow path portion 1UD facing the first protruding piece 45a is connected along the cavity 136. In other words, the second resin at this time does not contact the first protruding piece 45a of the decorative sheet 45 and the main portion of the final secondary molded article F2 in a frontal impact, but is smooth along the body portion of the decorative sheet 45. The ground flows and enters. Therefore, compared with the second resin injected from the second gate 139, the decorative sheet 45 is brought into contact with the decorative sheet 45 so as to enter the second cavity 136, and the second resin is likely to be stagnated in the vicinity of the decorative sheet 45. The effect of reducing the heat of the second resin on the decorative sheet 45 is further reduced. Further, as described above, the base end portion of the upper side surface 16d in the drawing of the holder 16 shown in Fig. 27 coincides with the end surface of the final secondary molded article F2. In other words, the decorative film 12 is pressed against the second fixing mold 183 by the holder 16 until it is inserted in front of the portion of the decorative film 12 of the body portion of the final primary molded article -32-201020094 F2, thereby suppressing the decoration. The film 12 floats from the inner surface of the concave portion of the second fixed mold 183. [Other Embodiments] (1) In the structures exemplified in the above embodiments, the molds 1, 31, and 51 for holding the first resin layers 4, 34, and 55 and the decorative sheets 5, 35, and 56 are formed. The protruding pieces 5a, 35a, 55a of the decorative sheets 5, 35, 56 are in contact with each other, and are passed through the protruding pieces 5a, 35a, 56a and other molds 7, 37, 5 3 (combined with the molds 1, 3 1, 5 1) The space held is to inject the second resin. However, in place of the above configuration, the protruding piece protruding outside the secondary molded article F2 may be formed on the first resin layers 4, 34, 55 for holding the first resin layers 4, 34, 55 and the decorative sheet 5 The molds 1, 31, and 51 of 35, 56 are such that the protruding pieces of the first resin layers 4, 34, 55 are in contact with each other, and are passed through the protruding pieces and the other molds 7, 37, 53 (combined with the molds 1, 31, 51) It is also possible to inject the second resin into the space held. (2) In the structure exemplified in each of the above embodiments, the decorative sheets 5, 35, and 56 are provided on one surface of the first resin layers 4, 34, and 55 formed by injecting the first resin, and the decorative sheet 5, On the surface opposite to the first resin layers 4, 34, and 55 on the surfaces of 35 and 56, the secondary resin F2 is produced by injecting the second resin. However, the present invention is not limited to this configuration. For example, the second molded article is molded by injecting the second resin on one surface of the primary molded article formed by injecting the first resin, and is provided on one side of the secondary molded article. In the decorative sheet, a third resin molded article may be produced by performing a third resin injection on the surface opposite to the secondary molded article. In summary, it is applicable to a method of producing a multilayer molded article by performing resin injection of a plurality of layers. (3) In the above embodiments, the decorative layer is composed of the decorative sheets 5, 35, and 56. However, in place of this configuration, the decorative layer is composed of a decorative film, and the decorative film is formed into a protruding multilayer molded article. External protruding pieces are also available. (4) In the structure exemplified in each of the above embodiments, the decorative film 12 (thermal transfer foil) is provided on the outer surface of the secondary molded article F2. However, in place of this structure, the outer surface of the secondary molded article F2 is also Set decorative pieces too. (5) In the structure illustrated in each of the above embodiments, the first resin layers 4, 34, and 55 are provided on the other surface of the decorative sheets 5, 35, and 56, but the first resin layers 4 and 34 are provided. In the case of 55, for example, the fitting portion for fitting the frame to the mobile phone may be integrally formed. Further, a decorative film or a decorative sheet may be provided on the other surface of the first resin layers 4, 34, and 55. (6) In the structure exemplified in the first and second embodiments, the fixing means is constituted by the sliding block 17 that grips the edge portion 5b of the decorative sheet 5. However, the fixing means is not limited to this structure. For example, the fixing means may be The attraction means for attracting the edge portion 5b. (7) The multilayer molding machine according to the first embodiment includes a rotary disk 9 that has a pair of movable molds 1 and is capable of advancing and retreating in the lateral direction and capable of rotating around a lateral axis, and has a first fixed mold 3 and The fixed disk 8 of the second fixed mold 7. However, it is not limited to such a multilayer molding machine. The multilayer molding machine to be used includes a first movable disk having a movable mold and capable of advancing and retracting in the vertical direction, and a multilayer movable disk having a first fixed mold and a second fixed mold and capable of laterally sliding from -34 to 201020094. The molding machine is also available. Alternatively, a multi-layer molding machine having a movable disk having a movable mold and capable of advancing and retreating in the lateral direction, and a rotating disk capable of rotating the first fixed mold and the second fixed mold so as to be rotatable in the vertical direction may be provided in a back-to-back manner. (8) As a modification of the third embodiment, for example, as shown in Fig. 20 and Fig. 21, the inclined portion 73 on the side of the movable mold 51 is formed between the split surface 51a of the movable mold 51 and the convex portion 51b. The inclined portion 74 on the first fixed mold 52 side facing the inclined portion 73 is formed between the parting surface 52a of the fixed mold 52 and the concave portion 52b, and is formed between the split surface 53a of the second fixed mold 53 and the concave portion 53b. The inclined portion 75 on the second fixed mold 53 side facing the inclined portion 73 forms a first resin for injecting the first resin from the first gate 57 into the first mold between the movable mold 51 and the first fixed mold 52. The first communication passage 76 of the pocket 54 forms a second communication passage 77 for injecting the second resin injected from the second gate 66 into the second cavity 64 between the movable mold 51 and the second fixed mold 53. Also. (9) The case described so far is an example in which two-color molding of two resins of different colors is used, but the resin for primary molding and the resin for secondary molding do not have to be different colors, for example, both are transparent. A resin of the same color may be formed by sandwiching a decorative sheet between two resins. Further, the resin for primary molding and the resin for secondary molding may be resins of the same type and color. When the second resin layer is formed by injecting a resin into a cavity of the other surface of the intermediate layer (welded to the first resin layer), the present invention is suitable for suppressing the reflow of the gate of the intermediate layer and the re-melting of the primary molded article. Multilayer forming technique-35-201020094 [Brief Description of the Drawings] Fig. 1 is a side cross-sectional view showing the entire u-layer molding die of the first embodiment. Fig. 2 is a side cross-sectional view showing the entire multilayer molding die of the first embodiment. Fig. 3 is a side cross-sectional view showing the entire multilayer molding die of the first embodiment. Fig. 4 is a side cross-sectional view showing the entire multilayer molding die of the first embodiment. Fig. 5 is a cross-sectional view taken along the line I-Ι of Fig. 3. Fig. 6 is a cross-sectional view taken along the line I-Ι of Fig. 5. Fig. 7 is an overall perspective view of a multilayer molded article of the first embodiment. Fig. 8 is a side cross-sectional view showing the entire multilayer molding die of the second embodiment. Fig. 9 is a side cross-sectional view showing the entire multilayer molding die of the second embodiment. Fig. 10 is a side cross-sectional view showing the entire multilayer molding die of the second embodiment. Fig. 11 is a side cross-sectional view showing the entire multilayer molding die of the second embodiment. Fig. 12 is a side cross-sectional view showing a state in which the movable mold and the second fixed mold of the second embodiment are clamped. -36-201020094 Fig. 13 is a plan sectional view showing the movable mold and the first fixed mold of the third embodiment at the time of mold clamping . Fig. 14 is a sectional view taken along line II-II of Fig. 13. Fig. 15 is a cross-sectional view taken along the line I-Ι of Fig. 13. Fig. 16 is a plan cross-sectional view showing a state in which the movable mold and the second fixed mold of the third embodiment are closed. Fig. 17 is a sectional view taken along line IV-IV of Fig. 16. Φ Fig. 18 is a cross-sectional view of the ΙΙΙ-ΙΠ line of Fig. 16. Fig. 19 is an overall perspective view of a multilayer molded article of a third embodiment. Fig. 20 is a side sectional view showing a state in which the movable mold and the first fixed mold of the other embodiment are clamped. Fig. 21 is a side sectional view showing a state in which the movable mold and the second fixed mold of the other embodiment are closed. Fig. 22 is a side cross-sectional view showing the entire multilayer molding die of the fourth embodiment. φ Fig. 2 is a side cross-sectional view showing the entire multilayer molding die of the fourth embodiment. Fig. 24 is a side cross-sectional view showing the entire multilayer molding die of the fourth embodiment. Fig. 25 is a side cross-sectional view showing the entire multilayer molding die of the fourth embodiment. Fig. 26 is a partially enlarged view of the vicinity of the first gate in Fig. 23. Fig. 27 is a partially enlarged view of the vicinity of the second gate in Fig. 23. Figure 28 is a perspective view of the second fixed mold of Figure 22. -37- 201020094 Figure 29 (a) and (b) are schematic views of the secondary molded article obtained in the fourth embodiment. [Description of main component symbols] 1. 31, 51, 181: movable molds 3, 33, 52, and 182: first fixed molds 7, 37, 53, and 183: second fixed molds 2, 32, 54, and 132: first Movities 6, 36, 64, 136: 2nd cavities 4, 34, 44: 1st resin layer 23, 43: 2nd resin layer 5, 35, 56: decorative sheet (decorative layer, intermediate layer) 5a, 35a 45a, 45b, 56a: protruding piece 5b, 35b: edge portion 11, 39, 66, 138, 139: gate 12: decorative film (decorative layer) 16: holder 1 7 : fixing means 19, 38, 71 , 132a, 136a: auxiliary cavity 142X: retraction (segment-shaped recess) F 1 : - sub-molded product F 2 : secondary molded product - 38-