201002504 六、發明說明： 【發明所屬之技術領域】 本發明係關於可押出熔融樹脂之裝置的模具，特別是關於 製造片材（sheet)用之模具的平板模頭(flatdie，平模）。 【先前技術】 以往在製造薄膜.片材製品時主要所用之T型模具（平板 模頭）係，使自押出機等之熔融可塑化裝置所傳送來的熔融 f: 树月曰以薄平且見度廣闊之狀態押出之裝置。T型模具被用在 單一樹脂或片材之厚度方向不同的樹脂予以疊層之狀態而 押出之成形方式中。 - 自τ型模具被押出成片狀之樹脂，由於在接觸至冷卻裝 置之期間其寬度方向會發生縮小之頸縮現象以及其片材端 部變厚之邊珠(edge bead)現象’因此，端部必須被切斷廢棄 或被循環利用。特別是當原料價格高且製品物性管理嚴格之 U 光學用途的片材等，因所切斷之片材端部不能被再循環利用 而不得不被廢棄，因此，在成本面上有損耗過大之問題。 對此一問題’如在端部變厚之部位預先使廉價之樹脂予以 流動（副層，sublayer)，而僅在採用為製品之中央部位使原 來的樹脂予以流動（主層）之裝置構成，如此較佳。而在此一 寬度方向使不同樹脂疊層之構造，已知有一種採用使模具流 入部之主層、副層一起設在模具上端，而在模具本體上使具 有雙方流路之岐管（manifold)部合流並在寬度方向使其層分 098119513 3 201002504 佈並押出之方式的τ型模具已為人所知（例如專利文獻1)。 [專利文獻1]日本專利第3459960號公報 【發明内容】 (發明所欲解決之問題） 但是，上述專利文獻1所揭示之方式，難以任意變更副層 的寬度。又，上述專利文獻1所揭示之方式為因應其用途， 即使不用副層，亦即僅主層實施成形之情形，其亦必須在副 層的流路使和主層相同的樹脂流動，又，自模具之岐管部起 上流部的本體尺寸之長度必須較長等，而成為構造上之問 題。 本發明係為了解決上述問題點所完成，其目的為提供一種 在採用為製品之中央部位和其端部可使不同的流體疊層之 平板模頭及片材製造方法。 (解決問題之手段） 為了解決上述問題，本發明係一種平板模頭，其具備有： 可注入既定流體之第1流體的第1流體注入部；及，具有可 注入和前述第1流體不同流體之第2流體的第2流體注入部 與可流出該第2流體之第2流體流出部的栓塞(plug);及， 在自己的侧面可插入前述栓塞，可使自前述第1流體注入部 注入前述第1流體及自前述第2流體流出部流出之第2流體 流出至外部之岐管部。 又，本發明在上述所記載之平板模頭中，其特徵為，前述 098119513 4 201002504 岐管部，可依照前述栓塞對該岐管部之插入長度而調整前述 第2流體的流出量。 為了解決上述問題，本發明係一種製造片材之片材製造方 法，其特徵為，在平板模頭的内部注入既定流體之第1流 體，在前述平板模頭之岐管部，自朝外部流出流體之岐管部 的側面注入和前述第1流體不同流體之第2流體至前述平板 模頭的内部，而自前述岐管部押出所注入之前述第1流體與 第2流體，如此以製造片材。 又，本發明在上述所記載之片材製造方法中，其特徵為， 具有可注入該第2流體之第2流體注入部及可流出該第2 流體之第2流體流出部的栓塞係被插入至前述岐管部之側 面，而藉由前述栓塞被注入前述第2流體。 又，本發明在上述所記載之片材製造方法中，前述第2 流體的流出量被依照前述栓塞對前述岐管部之插入長度而 調整。 (發明效果） 根據本發明，由於自製品被押出之開口部的岐管部之侧面 被注入第2流體，因此，其可在中央部位與端部疊層不同的 流體。 【實施方式】 以下說明本發明之實施形態。本實施形態中之平板模頭， 係在寬度方向設置樹脂的境界層，而僅在平板模頭端部注入 098119513 5 201002504 不同樹脂以製造片材。為了實現此一手法，本實施形態係使 用具有樹脂流路之栓塞(plug)插入至平板模頭側面，而其為 具有自栓塞流入不同樹脂之侧面進給(side feed)功能的平板 模頭。 圖1表示本實施形態之平板模頭。平板模頭10，在其上 部具有可注入熔融樹脂（第1流體）至主層之主層注入口 20 (第1流體注入部）°又，平板模頭10，在其下部具有可 使自主層注入口 20注入之熔融樹脂、及自後述栓塞1流出 作為副層之熔融樹脂（第2流體），使其流出至外部之岐管 部30。 岐管部30，為了可使後述之栓塞1插入，具有由：可防 止熔融樹脂朝向外部洩漏之密封部（seal)3、支持此密封部3 之密封部按壓具2，及支持栓塞1而由副板4所構成之栓塞 插入機構。又，被插入在岐管部30之栓塞1在片材寬度方 向係可滑動者。 又，圖1雖然僅表示平板模頭10之一邊的端部，但平板 模頭10之兩端部均為如上述同樣的構成。 其次，圖2(a)表示本實施形態之栓塞1的外觀圖，圖2(b) 表示栓塞1之剖面圖。 栓塞1具有：被注入作為副層之熔融樹脂的副層注入口 5 (第2流體注入部）及使被注入之熔融樹脂流出之副層流出 口 6 (第2流體流出部）。如圖2 (a)及圖2 (b)所示，由 098119513 6 201002504 於副層流出口 6的形狀係為薄平且寬度廣闊之狀態而被押 出，因此，寬度方向變成平坦狀，藉此而自副層注入口 5 所注入之熔融樹脂則以平坦形狀自副層流出口 6流出。 又，本實施形態中，被插入時為了使副層流出口 6經常向 著岐管部30之流出方向，栓塞1和岐管部30的接合面雖然 互相具有呈對組之傾斜狀，但其並不被限於此一態樣。 其次，栓塞1被插入至平板模頭10的岐管部30，圖3表 f、 示主層及副層之熔融樹脂注入及押出狀態的圖。又，圖3(a) 表示栓塞1之栓塞行程(插入長度)在110mm時之狀態，圖 3(b)表示栓塞行程在最長140mm時之狀態之例。又，在圖3 中，主層之熔融樹脂係以白底表示而其流動方向以黑箭頭表 示，而副層之溶融樹脂係以黑底表示，其流動方向以白箭頭 表示。 相對於圖3(a)所示之狀態，圖3(b)之狀態其插入長度較長 % 之部份自岐管部30的流出量亦變多，而副層之熔融樹脂的 片材寬度方向之長度也變多。 又，圖4表示圖3所示之栓塞1的插入部位之擴大圖。如 此等圖3、圖4所示，藉由調整栓塞1之栓塞行程，則同時 副層的、溶融樹脂之流出流量及片材寬度方向的長度也可被 調整。又，圖4(a)係對應於圖3(a)，而圖4(b)係對應於圖3 (b)。 如此，主層之流入和以往相同自平板模頭上部實行，而副 098119513 7 201002504 層之流入則自平板模頭側面所設流路之栓塞實施，如此則可 在片材寬度方向疊層不同的樹脂。又，如本實施形態之栓塞 方式，則藉調整栓塞行程可容易變更副層之寬度，又，如使 用未設流路之栓塞時則可成形僅有主層之片材。 藉由本實施形態其可達成以下之效果。 如本實施形態利用流路方式栓塞使副層自側面端部流 入’其可使平板模頭本體的形狀和以往同樣。 又，藉由調整設有流路之拴塞的行程時則副層的寬度可自 由地調整。 又，如使用未設有流路之栓塞時，則可容易變更僅成形主 層之片材的成形方式。 【圖式簡單說明】 圖1係本發明之實施形態的平板模頭之構成圖及栓塞插 入部位附近的擴大圖。 圖2(a)及(b)係本發明之實施形態的栓塞之外觀圖及剖面 圖。 圖3(a)及(b)表示本發明之實施形態在平板模頭被注入炫 融樹脂之狀態的圖。 圖4(a)及(b)係本發明之實施形態在平板模頭被注入炫融 樹脂之狀態中栓塞插入部位附近的擴大圖。 【主要元件符號說明】 1 栓塞 098119513 8 201002504 2 密封部按壓具 3 密封部 4 副板 5 副層注入口 6 副層流出口 10 平板模頭 20 主層注入口 (' 30 岐管部 098119513201002504 VI. Description of the Invention: TECHNICAL FIELD The present invention relates to a mold for a device capable of extruding a molten resin, and more particularly to a flat die for producing a mold for a sheet. [Prior Art] In the past, a T-die (flat plate die) mainly used in the production of a film and a sheet product was used to melt the f-transformed by a melt-plasticizing device such as a self-pressing machine. A device that is seen in a state of broad visibility. The T-die is used in a molding method in which a resin of a single resin or a sheet having a different thickness direction is laminated. - Since the τ-type mold is extruded into a sheet-like resin, the necking phenomenon in which the width direction is reduced during contact with the cooling device and the edge bead phenomenon in which the end portion of the sheet is thickened is therefore The ends must be cut off or recycled. In particular, when a sheet of U-optical material having a high raw material price and strict physical property management is used, the end of the cut sheet cannot be recycled and has to be discarded, so that there is excessive loss on the cost side. problem. For this problem, if a cheap resin is previously flowed at a portion where the end portion is thick, a sublayer is used, and the original resin is used as a central portion of the product to flow (main layer). So better. In the structure in which the different resin layers are laminated in the width direction, it is known to provide the main layer and the sub-layer of the mold inflow portion together at the upper end of the mold, and to have a manifold having both flow paths on the mold body (manifold) A τ-type mold in which the merging and stratification of the 098119513 3 201002504 is carried out in the width direction is known (for example, Patent Document 1). [Patent Document 1] Japanese Patent No. 3459960 [Disclosure] The problem to be solved by the invention is that it is difficult to arbitrarily change the width of the sub layer in the manner disclosed in Patent Document 1. Further, in the above-described Patent Document 1, the method disclosed in the above-mentioned Patent Document 1 requires that the main layer be formed only in the case where the sub layer is not used, that is, the main layer must be formed in the flow path of the sub layer, and The length of the body of the upper portion from the manifold portion of the mold must be long, etc., and becomes a structural problem. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a method for manufacturing a flat die and a sheet which can be laminated with different fluids at a central portion of the product and at an end portion thereof. (Means for Solving the Problems) In order to solve the above problems, the present invention provides a flat die comprising: a first fluid injection portion into which a first fluid of a predetermined fluid can be injected; and a fluid different from the first fluid that can be injected a second fluid injection portion of the second fluid and a plug that can flow out of the second fluid outflow portion of the second fluid; and the plug can be inserted into the side surface of the second fluid, and the first fluid injection portion can be injected The first fluid and the second fluid flowing out from the second fluid outflow portion flow out to the outer manifold portion. Further, in the flat die according to the above aspect of the invention, the 098119513 4 201002504 dam portion can adjust the outflow amount of the second fluid in accordance with the insertion length of the dam portion to the dam portion. In order to solve the above problems, the present invention provides a sheet manufacturing method for producing a sheet, characterized in that a first fluid of a predetermined fluid is injected into a flat die, and the manifold portion of the flat die is discharged from the outside. a second fluid having a fluid different from the first fluid is injected into a side surface of the manifold portion of the fluid to the inside of the flat die, and the first fluid and the second fluid injected are pushed out from the manifold portion to manufacture a sheet. material. Further, in the sheet manufacturing method according to the above aspect of the invention, the second fluid injection portion into which the second fluid can be injected and the second fluid outflow portion through which the second fluid can flow out are inserted. To the side of the fistula portion, the second fluid is injected through the plug. Further, in the above-described sheet manufacturing method according to the present invention, the outflow amount of the second fluid is adjusted in accordance with the insertion length of the plug to the manifold portion. According to the present invention, since the second fluid is injected into the side surface of the manifold portion of the opening from which the product is ejected, a different fluid can be laminated on the center portion and the end portion. [Embodiment] Hereinafter, embodiments of the present invention will be described. In the flat die according to the present embodiment, a boundary layer of a resin is disposed in the width direction, and only 098119513 5 201002504 different resins are injected into the end of the flat die to manufacture a sheet. In order to achieve this, the present embodiment uses a plug having a resin flow path to be inserted into the side of the flat die, which is a flat die having a side feed function for flowing a different resin from the plug. Fig. 1 shows a flat die of the embodiment. The flat die 10 has a main layer injection port 20 (first fluid injection portion) into which a molten resin (first fluid) can be injected to the main layer, and a flat die 10 having an autonomous layer at a lower portion thereof. The molten resin injected into the inlet 20 and the molten resin (second fluid) which is a sub-layer from the plug 1 described later flow out to the outer manifold portion 30. The fistula portion 30 has a sealing portion 3 capable of preventing the molten resin from leaking to the outside, a sealing portion pressing device 2 supporting the sealing portion 3, and the supporting plug 1 in order to insert the plug 1 to be described later. A plug insertion mechanism constituted by the sub-plate 4. Further, the plug 1 inserted into the fistula portion 30 is slidable in the sheet width direction. Further, although Fig. 1 shows only one end portion of the flat die 10, both end portions of the flat die 10 have the same configuration as described above. Next, Fig. 2(a) shows an external view of the plug 1 of the present embodiment, and Fig. 2(b) shows a cross-sectional view of the plug 1. The plug 1 has a sub-layer injection port 5 (second fluid injection portion) into which a molten resin as a sub-layer is injected, and a sub-layer discharge port 6 (second fluid outflow portion) through which the injected molten resin flows. As shown in Fig. 2 (a) and Fig. 2 (b), the shape of the sub-layered outlet 6 is pushed out in a state of being thin and wide, as shown in Fig. 2 (a) and Fig. 2 (b). Therefore, the width direction is flat. The molten resin injected from the sub-layer injection port 5 flows out from the sub-layer discharge port 6 in a flat shape. Further, in the present embodiment, in order to cause the sub-layered outflow port 6 to constantly flow out toward the fistula portion 30 during insertion, the joint surfaces of the plug 1 and the fistula portion 30 are inclined to each other, but they are Not limited to this aspect. Next, the plug 1 is inserted into the manifold portion 30 of the flat die 10, and Fig. 3 is a view showing the state of injection and extrusion of the molten resin of the main layer and the sublayer. Further, Fig. 3(a) shows a state in which the plugging stroke (insertion length) of the plug 1 is 110 mm, and Fig. 3(b) shows an example in which the plugging stroke is at a maximum length of 140 mm. Further, in Fig. 3, the molten resin of the main layer is indicated by a white background and the flow direction thereof is indicated by a black arrow, and the molten resin of the sub-layer is indicated by a black matrix, and the flow direction thereof is indicated by a white arrow. With respect to the state shown in Fig. 3 (a), in the state of Fig. 3 (b), the portion where the insertion length is longer than the part of the length of the tube portion 30 is also increased, and the sheet width of the molten resin of the sub layer is increased. The length of the direction also increases. 4 shows an enlarged view of the insertion portion of the plug 1 shown in FIG. As shown in Figs. 3 and 4, by adjusting the plugging stroke of the plug 1, the flow rate of the sub-layer, the flow rate of the molten resin, and the length in the sheet width direction can be adjusted. 4(a) corresponds to FIG. 3(a), and FIG. 4(b) corresponds to FIG. 3(b). In this way, the inflow of the main layer is the same as that of the conventional flat die, and the inflow of the sub-098119513 7 201002504 layer is implemented by the plug of the flow path provided on the side of the flat die, so that the lamination can be different in the width direction of the sheet. Resin. Further, according to the embedding method of the present embodiment, the width of the sub-layer can be easily changed by adjusting the plugging stroke, and when the plug is not provided with the flow path, the sheet having only the main layer can be formed. According to this embodiment, the following effects can be achieved. In the present embodiment, the sub-layer is introduced from the side end portion by the flow path type plugging, and the shape of the flat-plate die main body can be made the same as in the related art. Further, by adjusting the stroke of the damper having the flow path, the width of the sub-layer can be freely adjusted. Further, when a plug having no flow path is used, the molding method of forming only the sheet of the main layer can be easily changed. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram of a flat die according to an embodiment of the present invention and an enlarged view of a vicinity of a plug insertion portion. Fig. 2 (a) and (b) are an external view and a cross-sectional view of a plug according to an embodiment of the present invention. Fig. 3 (a) and (b) are views showing a state in which a flat resin is injected into a flat resin in an embodiment of the present invention. Fig. 4 (a) and (b) are enlarged views of the vicinity of a plug insertion portion in a state in which a flat die is injected with a blister resin in an embodiment of the present invention. [Description of main components] 1 Plug 098119513 8 201002504 2 Sealing press 3 Sealing part 4 Sub-plate 5 Sub-layer injection port 6 Sub-layer flow outlet 10 Flat die 20 Main layer injection port (' 30 岐 pipe part 098119513