經滴部中央摞準局負工消費合作社印^ ，及 26 6 Ο 2 Α7 ________Β7 五、發明説明（1 ) 本發明係有關於一種直接押吹成型方法及其裝置， 此大幅知昇PET製品的耐衝擊性（耐墜落性）<j 由於PVC容器有回收不易且會造成環境污染等問 題’而PET容器性質優良且成本低’因此近年來pvc容 器市場幾乎已完全由PET容器所取代，然這僅限於PET 射吹成形容器，至於PET直接押吹成形容器，因無法通 過墜落測試’所以至今仍未大量商業化；底下先說明何 謂直接押吹成型技術。 請參閱第4圖，第4圖可用來說明習用直接押吹成 型技術：將PET聚酯粒（原料）1送入料斗23，然後由除 濕乾燥機25除濕並預熱之，再將烘乾後的PET聚酯粒輸 送至押出機24内，PET聚酯粒在押出機24的加熱套内 被加熱塑化、且同時由押出機24的螺桿加壓輸送至與押 出機24出口相接的模頭26内，經由模頭26使PET溶體 形成一中空管狀型胚，此管狀形胚由模嘴27流出，然後 通過模具29範圍區，隨即合模並入吹針，以吹塑延伸型 胚’冷卻後即成為所需形狀的PET容器。 在上述的習用押吹成形製程中，由於其押出之型胚 為熔融體，故在吹塑成形時無法造成有效的分子配向與 結晶’而最後製成的PET容器無法通過墜落測試。 目前全世界對於此部份的研究皆從材料著手，期望 藉著提昇分子量增加支鏈與材料改質，來提昇其pET產 品的耐衝擊強度。目前已商業化的押吹級（Extrusi〇n Blow)PET 之 IV(固有黏度 Inherent Viscosity)值皆大於 --：-------.4------tr------1 - 1 T (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中囷國家標準（CNS ) A4規格（2丨OX29?公釐） A7 426602 五、發明説明（2) 1.0 ’其由增加支鏈（如Dupont PET 7067)或添加CHDM 改質（如Kodapak PET 13339)來增加成形性，其製品的耐 衝擊強度雖有改善，但仍無法通過墜落測試，目前市場 反應並不理想。 有鑑於此，本發明之目的在於提供一種改良的直接 押吹成型方法及裝置，能大幅提昇其PET製品的耐衝擊 性（耐墜落性）’且材料不需作大幅改質，可降低材料成 本。 本發明係利用押出機將PET聚酯材料加熱成熔膠並 押出’然後使熔膠流經模頭而成為型胚，再利用風環吹 出冷凍風將型胜降溫’然後使此降溫的型胚進入模具而 吹塑成形。由於PET型胚在進入模具之前，先以冷凍風 將其冷卻，於是PET型胚在模具中係以較低溫狀態來吹 塑並雙轴向延伸成形’故易造成分子配向而提昇製品的 墜落強度。 本發明對IV值在0.85(含）以上之pet聚酯材料皆可 得到令人滿意的結果’材料不需作大幅改質，可降低材 料成本^ 為使本發明之上述目的、特徵、和優點能更明顯易 懂，下文特舉較佳實施例並配合所附圖式做詳細說明。 圖式之簡單說明： 第1圖係本發明應用於連續式押吹成型裝置之示意Printed by the Consumers' Cooperative of the Central Bureau of Standards and Labor of the Ministry of Commerce, and 26 6 Ο 2 Α7 ________B7 V. Description of the Invention (1) The present invention relates to a direct blow molding method and its device. Impact resistance (drop resistance) < j Because PVC containers are difficult to recycle and cause environmental pollution and other issues, and PET containers have excellent properties and low costs, the PVC container market has been almost completely replaced by PET containers in recent years. This is limited to PET injection-molded containers. As for PET direct-extruded containers, they have not passed the drop test, so they have not yet been commercialized in large quantities; the following first explains what direct-extruded molding technology is. Please refer to Figure 4, which can be used to illustrate the conventional direct blow molding technology: PET polyester pellets (raw materials) 1 are sent to the hopper 23, and then dehumidified and dried by a dehumidifier 25, and then dried. PET polyester pellets are conveyed into the extruder 24, and the PET polyester pellets are heated and plasticized in the heating jacket of the extruder 24, and at the same time are conveyed by the screw of the extruder 24 to the die connected to the outlet of the extruder 24 under pressure. In the head 26, the PET solution is formed into a hollow tubular parison through the die 26. This tubular parison flows out of the die mouth 27, then passes through the area of the mold 29, and is then closed and merged into a blow pin to blow the extended parison. 'After cooling, it becomes a PET container of the desired shape. In the above-mentioned conventional extrusion blow molding process, since the extruded parison is a molten body, effective molecular alignment and crystallization cannot be caused during blow molding, and the resulting PET container cannot pass the drop test. At present, research on this part of the world starts with materials, and it is expected that the impact strength of pET products will be improved by increasing the molecular weight and increasing the branch chain and material modification. The IV (Inherent Viscosity) value of Extrusi Blow PET that has been commercialized at present is all greater than-: -------. 4 ------ tr ----- -1-1 T (Please read the notes on the back before filling out this page) This paper size is applicable to the Chinese National Standard (CNS) A4 specification (2 丨 OX29? Mm) A7 426602 V. Description of the invention (2) 1.0 ' It increases the formability by adding branch chains (such as Dupont PET 7067) or adding CHDM modification (such as Kodapak PET 13339). Although the impact strength of its products has improved, it still fails to pass the drop test. The current market response is not ideal. . In view of this, the object of the present invention is to provide an improved direct blow molding method and device, which can greatly improve the impact resistance (fall resistance) of its PET products, and the material does not need to be significantly modified, which can reduce the material cost. . In the present invention, an extruder is used to heat the PET polyester material into a melt glue and extrude 'then the melt glue flows through the die head to become a parison, and then the cooling ring is blown out by the wind ring to cool the mold', and then the cooled parison Enter the mold and blow molding. Before the PET embryo enters the mold, it is cooled by freezing air, so the PET embryo is blown in the mold at a lower temperature and biaxially stretched to form the mold. Therefore, it is easy to cause molecular alignment and increase the product's drop strength. . The present invention can obtain satisfactory results for pet polyester materials with an IV value above 0.85 (inclusive). 'The material does not need to be significantly modified, and the material cost can be reduced. ^ In order to achieve the above-mentioned objects, features, and advantages of the present invention It can be more clearly understood, and the preferred embodiments are described in detail below in conjunction with the accompanying drawings. Brief description of the drawings: Figure 1 is a schematic diagram of the present invention applied to a continuous blow molding device
St · 圓， 第2A圖係依據第1圖顯示本發明之風環安裝方式之 (210X 297公釐） (請先閲讀背面之注意事項再填耗本頁) 訂 經濟部中央標率局負Η消費合作社印掣 經濟部中央標準局貝工消費合作社印製 -- 4.26 6 Ο 2 Μ· ι υ Α7 ~~~~_____________ Β7_ 五、發明説明（3) 一例； 第2Β圓係依據第1圖顯示本發明之風環安裝方式之 另一例； 第3圖係本發明應用於蓄積式押吹成型裝置之示意 圖； 第4圖係習用連續式押吹成型裝置之示意圖。 標號說明： 1 PET聚酯粒（原料） 2空氣 3料斗 4 押出機 6 模頭 7模嘴 8 風環 9 模具 12 粉碎機 13 混料機 15 除濕乾燥機 16 冷凍機 17 鼓風機 18 蓄料器 19 油壓柱塞 23 料斗 24 押出機 25 除漏乾燥機 26 模頭 27 模嘴 29 模具 61 内管 62 絕熱空間 63 密封絕熱 81 絕熱墊片 82 螺絲 83 上蓋 84 下蓋 85 擋板 86 出風口 茲配合圖式說明本發明之較佳實施例。 現說明本發明應用於連續式押吹成型裝置之情形， 5 本紙張尺度適用中國國家標準（CNsl A4規格（2丨OX 297公釐） "~~" (請先閲讀背面之注意事項再填疼本I ) 訂 4 26 6 0 2 A7 B7 經^部中央標率局負工消費合作社印掣 五、發明説明（4) ' 奢參閱第1圖’ pET聚酿粒（原料）】經混料機^ 3均句搜 拌後送入料斗3 ’然後由除濕乾燥機15除濕並預熱之（150 c以上，含水率0 05%以下），再將烘乾後的ρΕτ聚酯粒 輸送至押出機4内，ΡΕΤ聚醋粒在押出機4的加熱套内 被加熱塑化、且同時由押出機4的螺桿加壓輸送至與押 出機4出口相接的模頭6内，經由模頭6使ρΕΤ熔體形 成一中空管狀型胚’此管狀形胚由模嘴7流出，然後進 入一與模嘴7相接但有絕熱效能的風環8内，利用冷凍 風將管狀型胚表面冷卻（由24〇ΐ〜25〇t;冷卻至22〇t以 下），使PET管狀型胚黏度與溶融強度增加，以防止管胚 墜落並促使部份結晶《冷凍風係由一鼓風機丨7將一般空 氣2打入一冷凍機16内’將風的溫度降至。。匸以下再 經由風環8内緣吹出，以冷卻pet型胚。冷卻的管狀型 胚接著通過模具9範圍區，隨即合模並入吹針，以大於 6kg/cm2之風壓來吹塑延伸型胚，冷卻後即成為所需形狀 的PET容器。 成形的PET容器具有毛邊，須進一步修除而得最後 成品。修除的毛邊被送入粉碎機12絞碎成片狀，然後引 回混料機13與PET原料1均勻混合來使用。 與習用直接押吹成型技術相比較，本發明多增設了 風環8、冷凍機16、及鼓風機17等設備，使PET型胚 在進入模具9之前，先以冷凍風將其冷卻（至220。(：以 下）’於是PET型胚在模具9中係以較低溫狀態來吹塑並 雙轴向延伸成形，故易造成分子配向而提昇製品的墜落 本紙張尺度適用中國國家標準（CNS ) A4規格（2丨0X297公釐） (請先閱讀背面之注意事項再填寫本頁)St. Circle, Figure 2A shows the installation method of the wind ring of the present invention (210X 297 mm) according to Figure 1. (Please read the precautions on the back before filling this page.) Printed by the Consumer Cooperatives Printed by Shellfish Consumer Cooperatives, Central Standards Bureau, Ministry of Economic Affairs-4.26 6 Ο 2 Μ · ι Α7 ~~~~ _____________ Β7_ V. Description of the Invention (3) An example; The 2B circle is shown according to Figure 1 Another example of the wind ring installation method of the present invention; FIG. 3 is a schematic diagram of the present invention applied to an accumulation type blow molding device; and FIG. 4 is a schematic diagram of a conventional continuous type blow molding device. DESCRIPTION OF SYMBOLS: 1 PET polyester pellets (raw material) 2 Air 3 Hopper 4 Extruder 6 Die head 7 Die mouth 8 Wind ring 9 Mould 12 Crusher 13 Mixer 15 Dehumidifier dryer 16 Freezer 17 Blower 18 Accumulator 19 Hydraulic plunger 23 Hopper 24 Extruder 25 Leak-removing dryer 26 Die head 27 Die nozzle 29 Mould 61 Inner tube 62 Insulated space 63 Sealed and insulated 81 Insulated gasket 82 Screw 83 Upper cover 84 Lower cover 85 Baffle 86 Air outlet The drawings illustrate a preferred embodiment of the present invention. The application of the present invention to a continuous extrusion blow molding device will now be described. 5 paper sizes are applicable to the Chinese national standard (CNsl A4 specification (2 丨 OX 297 mm) " ~~ " (Please read the precautions on the back before Fill in this book I) Order 4 26 6 0 2 A7 B7 Printed by the Central Standards Bureau of the Ministry of Work, Consumer Cooperatives, Cooperative Printing Co., Ltd. V. Description of the invention (4) 'Refer to Figure 1 for extravagance' pET polymer pellets (raw materials)] Feeder ^ 3 uniform sentence search and mix and send it into the hopper 3 ', then dehumidify and preheat it by dehumidifier dryer 15 (above 150 c, moisture content below 0 05%), and then convey the dried ρΕτ polyester granules to In the extruder 4, the PET pellets are heated and plasticized in the heating jacket of the extruder 4, and at the same time pressurized by the screw of the extruder 4 into the die 6 connected to the exit of the extruder 4, via the die 6 Make the ρΕΤ melt form a hollow tubular parison 'This tubular embryo flows out from the die mouth 7 and then enters into a wind ring 8 which is connected to the die mouth 7 but has adiabatic effect, and the surface of the tubular parison is cooled by the freezing air (From 24.0 to 25.0 t; cooling to less than 2 0 t), increasing the viscosity and melting strength of PET tubular parison In order to prevent the tube embryo from falling down and promote partial crystallization, the freezing air is blown by a blower, and the general air 2 is blown into a freezer 16 to reduce the temperature of the wind. 匸 The air is then blown out through the inner edge of the wind ring 8, To cool the pet-shaped embryo. The cooled tubular embryo then passes through the 9 area of the mold, then the mold is merged into the blow pin, and the extended parison is blow-molded with a wind pressure greater than 6 kg / cm2. After cooling, it becomes a PET of the desired shape. Container. The formed PET container has burrs, which must be further repaired to obtain the final product. The repaired burrs are sent to the crusher 12 and crushed into pieces, and then returned to the mixer 13 and the PET raw material 1 for uniform mixing for use. Compared with the conventional direct blow molding technology, the present invention adds more equipment such as the wind ring 8, the freezer 16, and the blower 17, so that the PET preform is cooled by freezing air (to 220) before entering the mold 9. (: Below) 'So the PET preform is blow-molded in the mold 9 at a relatively low temperature and biaxially stretched to form, so it is easy to cause molecular alignment and improve the product's fall. This paper's dimensions apply the Chinese National Standard (CNS) A4 specification (2 丨 0X297 mm) ( (Please read the notes on the back before filling out this page)
'IT 4 26 6 0 2 Μ滴部中央標準局貝工消费合作社印裝 A7 五、發明説明（5) ~---— =度。冷料u及鼓風機17為大取所知，因此不擬詳 迷’底下介紹風環8的構造。 風環8為一環形物，請參閱第2A圖，其中模嘴7與 «8之__'絲82_絕熱塾片81來連結固定且 風環8與模嘴7之間隔F需大於5随以上。設置間隔距 離F以及絕熱片81之目的在於避免模嘴7的熱量傳至風 環8而加熱冷凍風。風環8本體分為上蓋们與下蓋, 二者藉由螺牙旋轉而接合，藉旋轉下蓋84可調整風環8 的出風〇 86大小。在風環本體内’言支置至少二圈以上的 擋板85，以使二邊進入的冷凍風可均勻分佈。 另注意的是，在模頭6裏原設有一吹塑内管61，本 發明將内管61之一端與冷凍機16相接，用以引入冷凍 風，然後由模嘴7吹出，此設計可從型胚内部加以冷卻， 配合前述風環8作用，能使型胚冷卻更迅速均勾。内管 61與模頭内心之間設有一絕熱空間62 ,且絕熱空間62 兩端施以密封絕熱63，而内部抽真空，以避免模頭6的 熱量穿透内管61而加熱冷陳風。 風環除第2A圖所示連結於模嘴7的下緣以外，亦可 連結於模嘴7的外緣，如第2B圖所示。 本發明對於蓄積式押吹成型裝置亦適用，請參閱苐3 圖，圖中與前一實施例相同的元件給予同樣的標號，並 省略其說明。PET聚酯粒輸送至押出機4,而在押出機4 的加熱套内被加熱塑化、且同時由押出機4的螺桿加壓 輸送至蓄料器18内儲存，待蓄料器18内積存足夠的熔 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） {諳先閱讀背面之注意事項再填寫本頁j'IT 4 26 6 0 2 Μ Printed by the Central Standards Bureau Shellfish Consumer Cooperatives A7 V. Description of the invention (5) ~ ----= degrees. The cold material u and the blower 17 are well known, and therefore the structure of the air ring 8 will not be described in detail below. The air ring 8 is a ring, please refer to FIG. 2A, in which the die nozzle 7 and «8 of __ 'silk 82_ heat insulation tab 81 are connected and fixed, and the distance F between the air ring 8 and the die nozzle 7 needs to be greater than 5 the above. The purpose of setting the separation distance F and the heat insulation sheet 81 is to prevent the heat of the die nozzle 7 from being transmitted to the air ring 8 to heat the frozen air. The main body of the wind ring 8 is divided into an upper cover and a lower cover, and the two are joined by the rotation of the screw teeth. The size of the air outlet 86 of the wind ring 8 can be adjusted by rotating the lower cover 84. The baffle 85 is supported in the wind ring body at least two times so that the frozen wind entering the two sides can be evenly distributed. It is also noted that a blow-molded inner tube 61 was originally provided in the die head 6. The present invention connects one end of the inner tube 61 with the freezer 16 to introduce freezing air and then blow it out from the die nozzle 7. This design can be Cooling from the inside of the parison, in conjunction with the action of the aforementioned wind ring 8, can make the parison cool more quickly and evenly. A heat insulation space 62 is provided between the inner tube 61 and the core of the die head. Sealed heat insulation 63 is applied to both ends of the heat insulation space 62, and the interior is evacuated to prevent the heat of the die head 6 from penetrating the inner pipe 61 to heat the cold air. The wind ring may be connected to the lower edge of the die nozzle 7 as shown in Fig. 2A, as well as the outer edge of the die nozzle 7, as shown in Fig. 2B. The present invention is also applicable to the accumulation type blow molding device. Please refer to FIG. 3, in which the same components as those in the previous embodiment are given the same reference numerals, and descriptions thereof are omitted. The PET polyester pellets are conveyed to the extruder 4, which is heated and plasticized in the heating jacket of the extruder 4, and at the same time is conveyed by the screw of the extruder 4 to the accumulator 18 for storage, and is to be stored in the accumulator 18 Sufficient fused paper sizes are applicable to China National Standard (CNS) A4 (210X297 mm) {谙 Read the precautions on the back before filling in this page j
.1T -1. ! Λ26 - 3 2 A7 ________B7五、發明説明（6) ~"~~' 膠後，利用一油壓柱塞19將此積存的熔膠射入與其相接 的模頭6内，接著進行與前一實施例相同的後續步驟。 本發明對IV值在〇.85(含）以上之pET聚酯粒皆可得 到令人滿意的結果。現分別利用習用押吹成形技術（製程 1)、以及本發明之押吹成形技術（製程2)來製造塑膠瓶， 將製品作墜落測試’並且比較二者之成形性及透明性， 結果如表1至表4所示’其尹墜落測試是將押吹成形瓶 子裝滿水並封蓋’然後從高度h自由落下撞及平坦地面； 而成形性係指型胚滴垂程度，易滴垂則無法成形。成形 性、墜落強度、透明性等級分為：差、可、良、優四級。 比較實施例1 原料：shin PET U3396 A (IV=0.96) 成形品：400c.c.扁平瓶/瓶重：34g (諳先閲讀背面之注意事項再填寫本頁) •丨於·.1T -1.! Λ26-3 2 A7 ________ B7 V. Description of the invention (6) ~ " ~~ 'After the glue is injected, use a hydraulic plunger 19 to inject this accumulated melt into the die head 6 connected to it. Then, the same subsequent steps are performed as in the previous embodiment. The present invention can obtain satisfactory results for pET polyester particles having an IV value of 0.85 or more. Now, the conventional blow molding technology (Process 1) and the blow molding technology (Process 2) of the present invention are used to manufacture plastic bottles, and the products are subjected to a drop test ', and the formability and transparency of the two are compared. The results are shown in the table. Tables 1 to 4 show that its Yin drop test is to fill a blow-molded bottle with water and cover it, and then drop it freely from a height h to hit a flat ground. Formability refers to the degree of drooping of the embryo. Unable to form. The grades of formability, drop strength and transparency are divided into four grades: poor, fair, good, and excellent. Comparative Example 1 Raw material: shin PET U3396 A (IV = 0.96) Molded product: 400c.c. Flat bottle / bottle weight: 34g (谙 Please read the precautions on the back before filling in this page) • 丨 ·
*1T 表1 製程 成形性 墜落強度 (h=l ,2m) 透明性 1 無法成形 _ 2 可 優 良 經满部中央標率局員工消費合作社印52 比較實施例2 原料：KURA PET KS710 B (IV=1.25) 成形品：1.5/圓形瓶/瓶重：63g 本紙張尺度適用中國國家標準{ CNS ) Α4規格（2丨0Χ297公釐} A7 B7 尺 張 紙 __ 1本 經漓部中央標率局負工消費合作社印衆 、發明説明（7 ) 表2 成形性 墜落強度 透明性 製程^\ (h=0.7m) 1 優 可 優 _ 2 優 優 優 比較實施例3 原料：shin PET 7644-2 (IV=1，12) 成形品：1.5β圓形瓶/瓶重：75g 表3 成形性 墜落強度 透明性 製程 (h=0.7m') 1 可 可 可 2 優 可 可 _比較實施例4 原料：KURAPETKS710B(IV=1.25) 成形品：350c.c.園形瓶/瓶重：38g 表4 成形性 墜落強度 透明性 製程\\ (h=lm、 1 優 可 優 2 優 優 優 、 ，，，I「tvu ，但哥 實上本發明對於結晶及非結晶材料皆適用。因此雖然本 發明已以較佳實施例揭露如上，然其並非用以限定本發 t適用中國國家標準（CNS)A4规格（210Χ297公着）* 1T Table 1 Process formability Drop strength (h = l, 2m) Transparency 1 Unformable_ 2 Good through the Central Standards Bureau Staff Consumption Cooperative Association Printing 52 Comparative Example 2 Raw material: KURA PET KS710 B (IV = 1.25) Molded product: 1.5 / round bottle / bottle weight: 63g This paper size is applicable to the Chinese national standard {CNS) A4 specification (2 丨 0 × 297 mm) A7 B7 ruler paper __ 1 Negative work consumer cooperatives Yinzhong, invention description (7) Table 2 Formability Drop Strength Transparency Process ^ \ (h = 0.7m) 1 优 可 优 _ 2 优优 优 Comparative Example 3 Raw material: shin PET 7644-2 (IV = 1, 12) Molded product: 1.5β round bottle / bottle weight: 75g Table 3 Molding drop strength transparency process (h = 0.7m ') 1 Cocoa 2 You Cocoa_Comparative Example 4 Raw materials: KURAPETKS710B (IV = 1.25) Molded product: 350c.c. Round bottle / bottle weight: 38g Table 4 Moldability Drop strength transparency process \\ (h = lm, 1 You Ke You 2 You You You, ,,, I "tvu, but In fact, the present invention is applicable to both crystalline and non-crystalline materials. The disclosure is as above, but it is not used to limit the issue. Applicable to China National Standard (CNS) A4 specification (210 × 297)
~~,丨~Γ--:---\------1T------严 1 {請先鬩讀背面之注意事項再填寫本頁J a e Ο 2 A7 B7 五、發明説明（8) 明，任何熟習此項技藝者，在不脫離本發明之精神和範 圍内，仍可作些許的更動與潤飾，因此本發明之保護範 圍當視後附之申請專利範圍所界定者為準。 ^----；---^---4------訂------"1 (諳先閱讀背面之注意事項再填寫本頁) 經漭部中央標準局消費合作社印聚 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐}~~, 丨 ~ Γ-: --- \ ------ 1T ------ Yan 1 {Please read the notes on the back before filling in this page J ae Ο 2 A7 B7 V. Invention Explanation (8) It is clear that anyone skilled in the art can still make some modifications and retouching without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be defined by the scope of the attached patent application. Prevail. ^ ----; --- ^ --- 4 ------ order ------ " 1 (谙 Please read the precautions on the back before filling in this page) Consumption by the Central Bureau of Standards The paper size of the printed version of the cooperative is applicable to the Chinese National Standard (CNS) A4 (210X 297 mm)