200819284 九、發明說明： 【發明所屬之技術領域】 本發明係與高分子之難方法有關，制是關於-種高分子射出 模製成型之模室内氣體抽除方法。 【先前技術】 按就如夕色、多始、度等具※有不同組成單元之高分子物品之製造方 法而a ’係有利用多片式模具組所提供之内部複數初胚模室，經射出之方 法將高好原敝人關之她模室並難成蚊雜之_後，再將所 製成之初胚在同-模具中併合於同—成型模室内，經合模後使各該初胚進 行化學反應彼此鍵結模製成所需之多組成高分子物品。 上開方法中，在她模製與成型品模製之程序進行之前，均必需就合 模狀態下之模具，將模室中所存在之氣體予以抽離，苟真^之程度不理想 而殘留氣模室時，在高壓高溫之製造條件下，财巾之高分子與氣體 接觸之表面將會產生焦灼之燃燒現象’而影響製造成品之品質。 查’習用技術中用以抽離模室内氣體者，乃係藉由模具上與模室相連 通之多數猶’經由外部之貞縣置，賴_之氣舰由各該通道而被 抽離模室以外，而為避免影響模製成品之表面，該等通道之孔徑均極其細 微’以避免高分子福之進人，並允許氣體之流通；惟，於模製成型製造 程序中’為使顔品易於與模具分離，賴室室虹塗覆適t之離型劑乃 係必需，但，該等離型劑之存在卻會阻塞模室室壁表面上，各該細微通道 之開口 ’造成通道與模室間之連通被阻絕，如此一來，當在以成型模室將 初胚模製成高分子成品之始，由於模室内係同時存在著氣體與初胚，此等 200819284 情況將使歡巾之氣難分神留麵室之抑雜±，且彼此被初 胚分隔開來’苟有通道受到離型鮮加卫必·雜塞時，即有對應之氣 體無法被_地歸該成龍室，所衍生者，即侃品表面之職現象， 使製造之良率大幅降低。 【發明内容】 因此，本發明之主要目的即係在提供一種高分子射出模製成型之模室 内乱體抽除方法’其係可將模室巾之氣體確實_，⑽免殘留氣體造成 之高分子成品表面之峨縣，顧成品之良率與品質。 緣疋，為達成上述目的，本發明所提供高分子射出模製成型之模室内 氣體抽除方法，其模㈣之氣體賴蝴具上之氣體通道喃外部連通， 並先予4氣體通道以正壓’ _暢通並確保該氣體通道與該模室間之連通 狀態，繼之即織已經正壓作祕之氣體通道與該模室空間齡負壓，以 使該模室内之氣體得經由該氣體通道而被抽除。 【實施方式】 以下茲舉本务明一較佳實施例，並配合圖式作進一步說明，其中： 第-圖係本發明—較佳實_之流程示意圖。 明麥閱第一圖所不’在本發明一較佳實施例中所提供高分子射出模製 成型之权至内氣體抽除方法者，其係以已知之多層模具製成多色或多密度 等複組成之南分子物品之成型方法為具體例，具體而言，其步驟係包含了 有下列之主要者： 3、取用—模具(10);該模具係由第-、第二與第三模板(11)(12)(13) 彼此依序®接者，並使各雜板⑴)(12)(13)彼此依序疊合貼接而併合使該 200819284 模具(ίο)位於一合模狀態上，且於該第一與第二模板(11)(12)之相向端面間 及該第二與第三模板〇2)(13)之相向端面間分別形成一初胚模室(14)(15)， 各该初胚模室(14)(15)並分別藉由該模具(1〇)内部之氣體通道(2〇)與外部適 當連通。 b、 以負壓藉由該模具(10)之内部氣體通道(2〇)將各該初胚模室中之氣 體予以抽離’並將預定之高分子原料分難由射出裝置注人各該初胚模室 内，以模製成對應之初胚(31)(32卜 c、 使模具(1〇)開啟，而於該兩初胚模室所模製之初胚(31)(32)係分別附 著於該第一與該第三模板之對應板端上。 d、 將該第二模板(12)移開； e、 使a亥第一與第二模板(n)(彳3)彼此疊接而於其間形成一成型模室 ⑽，並使該兩初胚(31)(32)於該成型模室形成之_被容置於該成型模室 (16)中。 f、 提供預定之正壓(P1)予該模具之内部氣體通道，用以確保或暢通該 氣體通道(20)之通暢； g、 以負壓(P2)將該成型模室中之氣體經由該已經該f步驟後之氣體通 道(20)予以抽離。 h、 提供位於該成型模室(16)中之娜行反應所需之條件，使各該初胚 於該成型模室中進行化學反應。 I、開啟模具即可獲得由該細模室織成型之高分子物成品。 本貝施例中’其主要技術特徵乃係在該g步驟實施前先完成該f步驟， 200819284 藉由該f步驟之實施，係可使該模具内部之細微氣體通道保持允許氣體流動 之通暢狀態，以使該g步驟進行時得以達到將模室内氣體予以完全抽除之 程度，避免產生如習用技術般之成品表面燃燒焦灼現象，用以提高產品製 造之良率並維持一定之品質。 於上揭多組成高分子物之製造方法中，該b步驟實施前並無庸進行正 麼清除氣親道阻絲之步驟’蓋因各齡賴室於注料祕無他物存在 而將模室m區隔成兩以上不減通之雜，是以，在具有多數氣體通道 之前題下’縱有氣體通道扣塞現在存在，尚得經由其他騎之氣體通道 而被完全齡而無需進行耻壓清除氣體通道之必要，惟，苟如—初胚模 室僅具有單-用以與外界連通之細微氣體通道時，即有必需就初胚模室先 以正壓確保氣體通道暢通之必要。 亦即’用w連補室與外部之細微氣體通道，若其阻塞即有造成氣體 抽除不全之虞時’即有實施本發明所提供於以負壓抽除模室氣體前，先以 正壓確保驗财騎之轉，喊實赠除可於模具呈合歡態時為之 者外’於_麟或自關狀_更至合態料之實施_亦得為 之，此亦即為本發歡要之技嶋徵。 200819284 【圖式簡單說明】 第一圖係本發明一較佳實施例之流程示意圖 【主要元件符號說明】 (12)第二模板 (16)成型模室 (1〇)模具 （11)第一模板 (13)第三模板 （14)(15)初胚模室 (20)氣體通道 （31)(32)初胚200819284 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a difficult method of a polymer, and is a method for extracting a gas in a mold chamber of a polymer injection molding type. [Prior Art] A method for manufacturing a polymer article having different constituent units, such as a temperament, a multi-start, a degree, etc., is based on a method of manufacturing a plurality of initial blasting chambers provided by a multi-piece mold set. The method of shooting will close the mold room of the high-quality scorpion and it will be difficult to become a mosquito. Then, the original embryos will be combined in the same mold in the same mold, and then the mold will be closed. The primary embryos are chemically reacted and bonded to each other to form a desired multi-component polymer article. In the upper opening method, before the molding and molding process of the molding product is carried out, it is necessary to remove the gas existing in the cavity in the mold in the mold clamping state, and the degree of 苟 ^ is not ideal and remains. In the case of the air mold chamber, under the manufacturing conditions of high pressure and high temperature, the surface of the polymer that is in contact with the gas will produce a burning phenomenon of burning, which will affect the quality of the finished product. In the conventional technology, the person who is used to evacuate the gas in the mold chamber is connected to the mold chamber by the mold, and the majority of the tanks are connected to the mold chamber. Outside the chamber, in order to avoid affecting the surface of the molded article, the pore diameters of the channels are extremely fine 'to avoid the influx of the polymer and allow the gas to flow; however, in the molding manufacturing process' The pigment is easy to separate from the mold, and it is necessary to apply a suitable release agent to the chamber, but the presence of the release agent may block the surface of the chamber wall, and the opening of each of the fine passages is caused. The communication between the channel and the mold chamber is blocked. As a result, when the initial embryo is molded into a polymer product in the molding chamber, since the gas and the embryo are present in the mold chamber, the situation of 200819284 will be It is difficult to separate the scent of the towel, and it is separated from each other by the primordial ejector, and each other is separated by the primordial primaries, and when there is a channel that is separated from the fresh Guardian, the corresponding gas cannot be returned. The Jackie Chan room, the derivative, that is, the phenomenon of the surface of the product, making the manufacturing Yield is significantly reduced. SUMMARY OF THE INVENTION Therefore, the main object of the present invention is to provide a method for mass ejection of a polymer injection molding type, which can make the gas of the mold chamber _, (10) free of residual gas. The surface of the finished polymer product is the county, the yield and quality of the finished product. In order to achieve the above object, the present invention provides a polymer injection molding method for a polymer injection molding method, in which the gas passage of the mold (4) is externally connected to the gas passage, and is first given to the four gas passages. Positive pressure ' _ unblocking and ensuring the communication between the gas passage and the mold chamber, followed by weaving the gas passage that has been positively compressed and the space pressure of the mold chamber, so that the gas in the mold chamber passes through the The gas passage is removed. [Embodiment] The following is a preferred embodiment of the present invention, and is further described in conjunction with the drawings, wherein: the first diagram is a schematic diagram of the flow of the present invention. Ming Mai's first figure does not provide a polymer injection molding method to the internal gas extraction method in a preferred embodiment of the present invention, which is made of a multi-color mold or more. The molding method of the southern molecular object having the complex composition such as density is a specific example. Specifically, the steps include the following main ones: 3. The mold is taken out (10); the mold is composed of the first and the second The third template (11)(12)(13) is sequentially connected to each other, and the miscellaneous boards (1))(12)(13) are sequentially superposed and attached to each other so that the 200819284 mold (ίο) is located at a In the mold clamping state, an initial embryo mold chamber is formed between the opposite end faces of the first and second templates (11) (12) and the opposite end faces of the second and third templates 〇2) (13), respectively. 14) (15), each of the primaries (14) (15) is appropriately communicated with the outside by a gas passage (2 内部) inside the mold (1 〇). b. The gas in each of the primaries is evacuated by the internal gas passage (2〇) of the mold (10) by a negative pressure, and the predetermined polymer raw materials are difficult to be injected by the injection device. In the initial embryo mold chamber, the corresponding embryo (31) is molded into the corresponding embryo (31) (32), and the mold (1) is opened, and the embryo (31) (32) molded in the two embryonic mold chambers is used. Attached to the corresponding plate ends of the first and the third template respectively. d. moving the second template (12) away; e, stacking the first and second templates (n) (彳3) A molding cavity (10) is formed therebetween, and the two preforms (31) (32) are formed in the molding cavity to be accommodated in the molding cavity (16). Pressing (P1) to the internal gas passage of the mold to ensure or smooth the unobstructed passage of the gas passage (20); g, passing the gas in the molding cavity by the negative pressure (P2) through the already f step The gas passage (20) is evacuated. h, providing the conditions required for the reaction in the molding chamber (16), so that each of the embryos is chemically reacted in the molding chamber. Available from this fine The finished product of the cavity-molded polymer. The main technical feature of the present embodiment is that the f-step is completed before the implementation of the g-step, and the implementation of the f-step enables the interior of the mold to be The fine gas passage maintains a state in which the gas flow is allowed to flow, so that the g step can be performed to completely remove the gas in the mold chamber, thereby avoiding the burning of the surface of the finished product as in the prior art, and improving the product manufacturing. The yield is maintained at a certain quality. In the manufacturing method of the multi-component polymer, the step of removing the gas before the b-step is carried out, and the step of removing the gas from the gas is prevented. There is no other material to separate the cavity m into two or more, so that before the majority of the gas passages, the gas channel is now present, and it has to pass through other gas passages. It is necessary to be completely aged without the need to carry out the squeezing pressure to remove the gas passage. However, for example, when the primordial mold chamber has only a single fine gas passage for communicating with the outside world, it is necessary to have an initial embryo mold chamber. First, positive pressure is necessary to ensure the smooth flow of the gas passage. That is to say, 'when the w-fill chamber and the external fine gas passage, if it is blocked, it will cause the gas to be exhausted, then the invention is provided with a negative Before the pressure of the mold chamber gas is removed, the positive pressure is used to ensure the turn of the wealth control ride. The actual gift can be used in addition to the mold when the mold is in a comfy state. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Two template (16) molding chamber (1 inch) mold (11) first template (13) third template (14) (15) primordial mold chamber (20) gas passage (31) (32) primordial