M282934 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種拉鍊，尤其是關於一種利用於任何 袋體，並在封口拉鍊上加以改良，使袋體内氣體及液體密 封而不會外泡之氣密封口拉鍊結構。 【先前技術】 Φ 習知袋體之封閉方式，曾有利用可相互榫合之氣密封 條，作為封閉構件將袋體予以密封，但其封設時須將氣密 封條上之榫溝——相互對齊壓接，使用上不但不方便，且 容易發生壓接不確實，而使二相對氣密封條脫開之現象。 後來則有利用拉鍊之作用方式，使二氣密封條間容易榫合 或開脫，改進其操作之方便性。此種拉鍊有別一般左右相 嵌合之傳統拉鍊，其係由塑膠製成的上下鍊槽加以榫合， 一般稱之為平展式塑膠封口拉鍊。其使用於儲存袋之情形 Φ 如第一圖所示，該儲存袋主要由一塑膠袋體ίο與一拉鍊 20所組成，拉鍊20並由鍊首201往鍊尾202處將袋體10 加以封閉鍊合。請再參閱第二圖，該圖所示者為拉鍊20 其鍊尾202之一端，其中，拉鍊20包括二鍊帶21、二封 接部22與一拉鍊頭23。二鍊帶21間藉由拉鍊頭23鍊合 或分隔，鍊合時則透過鍊槽211上下相互卡合。該二鍊帶 21之二末端則分別設有一封接部22,其通常以熱封方式加 以接合，一方面作為拉鍊頭23滑動之二端盡頭，同時也是 • M282934 拉鍊20與袋體10連接固定之處。然而從第二圖中可以發 現，當f鍊頭23拉滑至鍊尾202端時，二鍊槽211於拉鍊 頭23前方處，卻呈現上下存有間隙之間隔，使得袋體ι〇 無法完全封閉，透過該_，袋體1G之氣體或液體仍會戌 出；此外，拉鍊頭23之下導槽232與下鍊帶21間亦存有 間隙，該間隙並與上導槽231相連通至袋體1〇外，因而無 法達到完全密封之目的。另一方面，該拉鍊頭23拉滑至鍊 尾202端時，並沒有一可將拉鍊頭23固定之元件設置，使 得儲存袋使用存放時容易因拉鍊頭23往反方向滑開’使該 袋體之封閉效果不佳。 [新型内容】 為改善袋體在拉鍊鍊合後仍存有間隙之缺點，同時避 免拉鍊頭因使用存放而鬆脫滑開，本創作將提供一種能夠 使拉鍊鍊合後不再存有間隙，而能夠大幅增加密封效果， 並能使拉鍊頭拉到定位後能夠增加固定性之氣密封口拉鍊 結構。 本創作包括一第一鍊帶，該第一鍊帶設有一第一鍊 槽；一第二鍊帶，該第二鍊帶設有一與該第一鍊槽相互榫 合之第二鍊槽，該第二鍊帶接近鍊尾處並設有一密接部； 以及一拉鍊頭，該拉鍊頭内設有一分隔片，該分隔片將該 拉鍊頭之内部區隔出一上導槽與一下導槽，其中，該第一 鍊帶穿設於該上導槽，與穿設於該下導槽之該第二鍊帶由 鍊首向鍊尾處相互鍊合，且該第一鍊帶係鍊合疊接於該第 M282934 二鍊帶之上，而該拉鍊頭之一右側板恰可無間隙地穿設並 卡止於所述密接部中。其中，該密接部設有一倒L形切口， 該切口由該第二鍊帶邊緣之第二鍊槽向該第二鍊帶内部橫 向延伸，再向鍊首方向縱向延伸。該切口橫向之寬度略窄 於第二鍊槽寬度加上拉鍊頭右側板寬度之總合，以便將拉 鍊頭向中間擠壓，使拉鍊頭與鍊槽間沒有空隙，而其縱向 長度則略短於該拉鍊頭之前端至分隔片尾端之長度。另一 方面，該第二鍊帶上設有該密接部之背面可進一步設有一 卡固墊片，該卡固墊片係沿該第二鍊槽之邊緣而設，並分 佈在該密接部之前後。 藉由本創作密接部之設置，拉鍊頭其右側板可直接穿 設並卡固於該密接部中，因而使拉鍊頭之前端埋入鍊帶底 下，進而使原本存於上下鍊帶間之空隙消失，使本創作達 到完全密封之效果。另一方面，則因為卡固墊片之設置， 使拉鍊頭拉滑至接近密接部時，由於穿設下導槽之第二鍊 帶其厚度增加，使拉鍊頭經過該鍊帶時，因受緊壓而能緊 固於鍊帶上，而無法輕易後退，其並可將拉鍊頭向中央擠 壓，進一步使拉鍊頭與鍊帶間更為緊密而沒有閒隙。 本創作尚可於該第一鍊帶與該第二鍊帶上設有該密 接部之背面進一步設置一隔絕片，該隔絕片於面向鍊首方 向並設有一開口，使該拉鍊頭得以滑越而向該密接部方向 鍊合，其餘三邊緣則密接於該第一鍊帶與該第二鍊帶之鍊 帶上，藉由隔絕片之設置，使氣體或液體不易進入密接部， 而能加強該密接部之密封效果。 M282934 以下將配合圖式進一步說明本創作的實施方式，下述 所列舉的實施例係用以闡明本創作，並非用以限定本創作 之範圍，任何熟習此技藝者，在不脫離本創作之精神和範 圍内，當可做些許更動與潤飾，因此本創作之保護範圍當 視後附之申請專利範圍所界定者為準。 【實施方式】 請參閱第三A圖，該圖係本創作實施例拉鍊之示意 圖。本創作實施例之拉鍊30包括一第一鍊帶31、一第二 鍊帶32、二封接部33(圖式僅示其一）與一拉鍊頭34。第一 鍊帶31與第二鍊帶32經由拉鍊頭34之鍊合，而呈現榫合 之封閉狀態，並藉由密接部322(請先參閱第四圖）使拉鍊頭 由右側板343前端穿設其中，使該拉鍊30呈現一密封之鍊 合結構。 請參閱第三B圖，拉鍊頭34包括一分隔片340、一 上導槽341、一下導槽342與一右側板343。分隔片340 將拉鍊頭34區隔出上下空間之上導槽341與下導槽342， 上導槽341右側之壁面即為右側板343，其寬度為W1，而 拉鍊頭34前端至分隔片340尾端之長度則為L1。拉鍊頭 34與各鍊帶之組設方式請參閱第四圖，拉鍊頭34之上導 槽341穿設有一第一鍊帶31之第一鍊槽311，而該下導槽 342則穿設有一第二鍊帶32之第二鍊槽321，藉由上導槽 341與下導槽342以及分隔片340之卡合作用力與分隔 力，使第一鍊帶31與第二鍊帶32間形成鍊合或脫開之狀 8 M282934 態。其鍊合時即如同氣密封條般，第一鍊槽311可與第二 鍊槽321相互榫合密接。 、#另外，请同時參閱第三A圖與第四圖，本創作實施例 ;第鍊f 32上设有一密接部322，該密接部322可設置 $接近鍊尾301之前。密接部322可包括一切口 3221與一 突片3222。切口 3221呈倒[形，由第二鍊帶％邊緣^第 *、東槽321處，向第二鍊帶％内部橫向延伸切設一 W3之 見度，再向鍊首（圖中未示）方向縱向延伸，並切設一 之 ，度。該切口 3221橫向之寬度▽3略窄於第二鍊槽3灯之 寬度W2加上右側板343寬度肌之總合，而其縱向長度 則略缺拉鍊頭34前端至分隔片340尾端之長度L1。 如述切口 3221由第一凝器l ， φ弟一鍊π 32上所切出之片段即為突片 。第—鍊帶32上由切口 3221至鍊尾3〇1間，可先與 相對應部分之第-鍊帶31相鍊合， 22 部分形成-密接孔6〇。 」在讀4 322 密接=拉鍊頭未拉到 =未：接部322之前，由於突片3222二拉= 32上的第—鍊槽321所切下，第二鍊帶& 力’使由下導槽342延伸連接之突片助向下== 2的突片3222與第-鍊帶31間即形成前述之密接孔 請同時參閱第五A圖與第五6圖 作實施例拉鍊頭卡接至密接部之㈣。當 M282934 進一步往前述密接部322拉滑時，拉鍊頭34上之右側板 343就會順勢穿入前述之密接孔60中，使拉鍊頭之前端整 個嵌設於第二鍊帶32中，造成習知創作中鍊帶21(鍊槽211) 間所存有之空隙(請再參閱第二圖）全部消失，而L形切口 3221所切出之密接孔60亦同樣因此而密閉；此外，亦使 原本下導槽342之間隙無法連通至上導槽341，所以可阻 絕該處空氣或液體之流通，達到密封的效果。 此外，第二鍊帶32所切下之突片3222則穿設於下導 槽342中，由於突片3222之長度L2小於拉鍊頭34前端 至分隔片340尾端之長度L1，因此分隔片不會全部掉入L 形切口 3221中，所以不會有無法後退拉開之情形。另一方 面，為了增加拉鍊頭34與鍊帶間之密接性，切口 3221之 W3寬度略窄於第二鍊槽321寬度W2加上右側板343 W1 之寬度，才能使右側板343於穿入密接孔60時，第二鍊帶 32會將右側板343向中間擠壓，使右側板343與第一鍊帶 311間沒有空隙，而能夠更加緊密且不留存有間隙，確保 鍊帶間鍊合之密接性。 請參閱第六圖，該圖係本創作實施例卡固墊片之示意 圖。為使拉鍊頭34拉滑至密接部322後，不會因袋體使用 時造成拉鍊頭34之往後滑開，可進一步於第二鍊帶32上 設有密接部322處之背面設有一卡固墊片40,該卡固墊片 40係沿第二鍊槽321之邊緣而設，並分佈在密接部322之 前後。由於卡固墊片40增加了第二鍊帶32整體之厚度， 當拉鍊頭34拉滑經過該處時，其所增加之厚度使下導槽 10 •M282934 342對第二鍊帶32整體產生卡固之作用，使拉鍊頭34拉 滑至密接部322後同時可藉由卡固墊片40固著於密接部 322中。此外，卡固墊片40於靠近鍊首之一端可設有一向 第二鍊槽321斜切之斜凹口 41，使拉鍊頭34拉滑至密接 部322時，能夠順著該斜凹口 41滑移而更加順暢。卡固墊 片40之設置除前述之功能外，尚可進一步加強切口 3221 之強度，使該切口 3221不會因拉鍊頭34拉滑力過大，而 將切口 3221扯裂。卡固墊片40之增設亦有前述將右側板 343向中間擠壓，使右側板343與第一鍊帶311間沒有空 隙之作用。 請參閱第七A圖與第七B圖，該些圖係本創作實施 例隔絕片之示意圖。為進一步加強密封之效果，本創作尚 可進一步於第一鍊帶31與第二鍊帶32上設有密接部322 之背面設置一隔絕片50,該隔絕片50於面向鍊首方向並 留有一開口 51，使拉鍊頭34得以滑越而向該密接部322 方向鍊合，其餘三邊緣則密接於第一鍊帶31與第二鍊帶 32之鍊帶上，以進一步加強拉鍊之密封效果。 11 •M282934 【圖式簡單說明】 第一圖係習知儲存袋之示意圖。 第二圖係習知儲存袋塑膠拉鍊之示意圖。 第三A圖係本創作實施例拉鍊之示意圖。 第三B圖係本創作實施例中所使用拉鍊頭之示意圖。 第四圖係本創作實施例拉鍊鍊帶之示意圖。 第五A圖係本創作實施例拉鍊頭未拉到密接部前之側視示 φ 意圖。 第五B圖係本創作實施例拉鍊頭卡接至密接部之側視示意 圖。 第六圖係本創作實施例卡固墊片之示意圖。 第七A圖係本創作實施例隔絕片之示意圖。 第七B圖係本創作實施例隔絕片裝設後之側視示意圖。 蠱 【主要元件符號說明】 10 袋體 20 拉鍊 201 鍊首 21 鍊帶 22 封接部 231 上導槽 拉鍊 202 鍊尾 211 鍊槽 23 拉鍊頭 232 下導槽 30 12 M282934 301 鍊尾 31 第一鍊帶 311 第一鍊槽 32 第二鍊帶 321 第二鍊槽 322 密接部 3221 切口 3222 突片 33 封接部 34 拉鍊頭 340 分隔片 341 上導槽 342 下導槽 343 右側板 40 卡固墊片 41 斜凹口 50 隔絕片 51 開口 60 密接孔 13M282934 8. Description of the new type: [Technical field to which the new type belongs] This creation is about a zipper, especially a bag that is used in any bag, and is improved on the sealing zipper, so that the gas and liquid in the bag are sealed without going outside Bubble-sealed zipper structure. [Previous technology] Φ The bag sealing method is known. It has been used to seal the bag body with a gas seal that can be tenoned together. However, it must be sealed with a tenon groove on the air seal— Aligning and crimping with each other is not only inconvenient in use, but also easily leads to incomplete crimping, which causes the two opposite gas seals to detach. Later, there was a use of a zipper to make the two gas sealing strips easy to tenon or release, thereby improving the convenience of operation. This type of zipper is different from the traditional zipper which is generally fitted on the left and right. It is made of plastic with upper and lower chain grooves and is tenoned. It is generally called a flat plastic sealing zipper. It is used in a storage bagΦ As shown in the first figure, the storage bag is mainly composed of a plastic bag body and a zipper 20, and the zipper 20 closes the bag body 10 from the chain head 201 to the chain tail 202 Chained. Please refer to the second figure again, which shows one end of the chain tail 202 of the zipper 20, wherein the zipper 20 includes two chain straps 21, two sealing portions 22, and a zipper head 23. The two chain belts 21 are linked or separated by the zipper head 23, and are linked up and down through the chain grooves 211 when they are linked. The two ends of the two chain belts 21 are respectively provided with a joint portion 22, which is usually joined by heat sealing. On the one hand, it is the end of the sliding end of the zipper head 23, and at the same time • M282934 zipper 20 is connected to the bag body 10 and fixed Place. However, it can be found from the second figure that when the f chain head 23 is pulled to the end 202 of the chain, the second chain groove 211 is in front of the zipper head 23, but there is a gap between the upper and lower sides, so that the bag body cannot be completely Closed, through this _, the gas or liquid of the bag body 1G will still burst out. In addition, there is a gap between the lower guide groove 232 and the lower chain 21 of the zipper head 23, and the gap is communicated with the upper guide groove 231. The bag body is 10 outside, so the purpose of complete sealing cannot be achieved. On the other hand, when the zipper head 23 is pulled to the end of the chain 202, there is no component that can fix the zipper head 23, so that when the storage bag is stored, it is easy to slide the zipper head 23 in the opposite direction to make the bag The sealing effect of the body is not good. [New content] In order to improve the shortcomings of the bag body after the zipper chain is still connected, and to prevent the zipper head from loosening and slipping due to storage, this creation will provide a way to make the zipper chain no longer have gaps. It can greatly increase the sealing effect, and can increase the fixed air-tight zipper structure after the zipper pull is positioned. This creation includes a first chain belt, which is provided with a first chain groove; a second chain belt, which is provided with a second chain groove which is engaged with the first chain groove, and The second chain belt is close to the chain tail and is provided with a tight-fitting portion; and a zipper head, the zipper head is provided with a separator, which separates the inner part of the zipper head from an upper guide groove and a lower guide groove, wherein The first chain belt is passed through the upper guide groove, and the second chain belt passed through the lower guide groove is linked to each other from the chain head to the chain tail, and the first chain belt is tethered and overlapped It is above the M282934 second chain belt, and one of the right side plates of the zipper head can be passed through without any gap and locked in the tight contact portion. Wherein, the tight contact portion is provided with an inverted L-shaped cutout, the cutout extends horizontally from the second chain groove on the edge of the second chain belt to the inside of the second chain belt, and then extends longitudinally to the direction of the chain head. The horizontal width of the cutout is slightly narrower than the width of the second chain slot plus the width of the right side plate of the zipper head, so that the zipper head is squeezed toward the middle, so that there is no gap between the zipper head and the chain slot, and the longitudinal length is slightly shorter. The length from the front end of the zipper head to the tail end of the separator. On the other hand, the back of the second chain belt provided with the tight contact portion may further be provided with a clamping gasket, which is arranged along the edge of the second chain groove and distributed on the tight contact portion. Before and after. With the creation of the tight-fitting part of this creation, the right side plate of the zipper head can be directly threaded and fixed in the tight-fitting part, so that the front end of the zipper head is buried under the chain belt, and the gap originally stored between the upper and lower belts disappears. To make this creation completely sealed. On the other hand, because of the installation of the clamping gasket, when the zipper head is pulled close to the close contact portion, the thickness of the second chain belt passing through the lower guide groove is increased. When the zipper head passes the chain belt, It can be tightly pressed on the chain belt and cannot be easily retracted. It can also squeeze the zipper head toward the center, which further makes the zipper head and the chain belt tighter without gaps. In this creation, an insulation sheet can be further provided on the back of the first and second chain belts provided with the close contact portion. The insulation sheet faces the head of the chain and has an opening to allow the zipper to slide over And the chain is connected in the direction of the tight contact portion, and the other three edges are tightly connected to the first and second link belts. With the arrangement of the insulation sheet, the gas or liquid cannot easily enter the tight contact portion, and can be strengthened. The sealing effect of the sealing portion. M282934 The following will further explain the implementation of this creation in conjunction with the drawings. The examples listed below are intended to clarify this creation and are not intended to limit the scope of this creation. Anyone skilled in this art will not depart from the spirit of this creation. Within the scope and scope, some changes and retouching can be done, so the scope of protection of this creation shall be determined by the scope of the attached patent application. [Embodiment] Please refer to FIG. 3A, which is a schematic diagram of a zipper of this creative embodiment. The zipper 30 of this creative embodiment includes a first chain belt 31, a second chain belt 32, two sealing portions 33 (only one of which is shown in the drawing), and a zipper head 34. The first chain strap 31 and the second chain strap 32 are linked by the zipper head 34 to present a closed state of the tenon, and the zipper head is worn by the front end of the right side plate 343 through the tight contact portion 322 (see the fourth figure first). It is assumed that the zipper 30 presents a sealed chain structure. Referring to FIG. 3B, the zipper head 34 includes a separator 340, an upper guide groove 341, a lower guide groove 342, and a right side plate 343. The separator 340 separates the zipper head 34 from the upper and lower spaces. The upper guide groove 341 and the lower guide groove 342. The right side wall of the upper guide groove 341 is the right side plate 343, and its width is W1. The length of the tail end is L1. For the way of assembling the zipper head 34 and each chain belt, please refer to the fourth figure. The guide groove 341 on the zipper head 34 is provided with a first chain groove 311 of the first chain belt 31, and the lower guide groove 342 is provided with a The second link groove 321 of the second link belt 32 forms a chain between the first link belt 31 and the second link belt 32 by the engaging force and the separating force of the upper guide groove 341 and the lower guide groove 342 and the separator 340. Closed or disengaged state 8 M282934 state. When it is chained, it is like an air-sealing strip, and the first chain groove 311 and the second chain groove 321 can be closely jointed with each other. , In addition, please refer to Figures 3A and 4 at the same time, this creative embodiment; a tight contact portion 322 is provided on the 32nd chain f 32, and the close contact portion 322 can be set close to the end of the chain 301. The sealing portion 322 may include all the openings 3221 and a protruding piece 3222. The cutout 3221 is in the shape of an inverted [, from the edge of the second chain belt% to the first, the eastern groove 321, and a horizontal extension of W3 is cut into the second chain belt%, and then to the chain head (not shown in the figure) The direction extends longitudinally, and it is set to one degree. The width of the slit 3221 in the transverse direction ▽ 3 is slightly narrower than the width of the second chain slot 3 lamp W2 plus the width of the right side plate 343. The longitudinal length is slightly shorter than the length of the front end of the zipper 34 to the end of the separator 340. L1. As described, the incision 3221 is made by the first condenser l, and the segment cut out on the φ 32 chain π 32 is the protrusion. The first chain link 32 can be linked with the corresponding first chain link 31 from the notch 3221 to the chain tail 301, and the 22 joints form a close contact hole 60. "After reading 4 322 close contact = zipper head not pulled = = not: before the connection part 322, because the tab 3222 second pull = 32 is cut off by the first chain groove 321, the second chain & force ' The protruding piece connected by the slot 342 is extended downward to help the == 2 protruding piece 3222 and the first chain 31 to form the aforementioned tight hole. Please refer to FIG. 5A and FIG. 5 for an example. The close contact of the Ministry. When M282934 is further pulled toward the tight contact portion 322, the right side plate 343 on the zipper head 34 will pass through the tight contact hole 60, so that the front end of the zipper head is entirely embedded in the second chain belt 32, resulting in habit. In the creation, the gaps (see the second picture) between the chain belts 21 (chain groove 211) are all disappeared, and the sealing hole 60 cut out by the L-shaped cutout 3221 is also closed because of this; in addition, the original The gap between the lower guide groove 342 and the upper guide groove 341 cannot be communicated with each other, so the air or liquid can be blocked there to achieve a sealing effect. In addition, the protruding piece 3222 cut by the second chain belt 32 is disposed in the lower guide groove 342. Since the length L2 of the protruding piece 3222 is shorter than the length L1 from the front end of the zipper head 34 to the trailing end of the separator 340, the separator is not It will all fall into the L-shaped cutout 3221, so there is no case where it cannot be pulled back. On the other hand, in order to increase the adhesion between the zipper head 34 and the chain, the width W3 of the cutout 3221 is slightly narrower than the width W2 of the second chain groove 321 plus the width of the right side plate 343 W1, so that the right side plate 343 can be tightly inserted into When the hole 60 is formed, the second link belt 32 will press the right side plate 343 toward the middle, so that there is no gap between the right side plate 343 and the first link belt 311, and it can be tighter without leaving a gap, ensuring that the links between the links are connected. Tightness. Please refer to the sixth figure, which is a schematic diagram of the clamping gasket of this creative embodiment. In order to prevent the zipper head 34 from sliding back after the zipper head 34 is pulled to the close contact portion 322 due to the use of the bag body, a card can be further provided on the back of the second link 32 where the close contact portion 322 is provided. The fixing washer 40 is provided along the edge of the second chain groove 321 and is distributed in front of and behind the sealing portion 322. Because the clamping pad 40 increases the overall thickness of the second chain belt 32, when the zipper head 34 is pulled past it, the increased thickness makes the lower guide groove 10 • M282934 342 generates a card on the entire second chain belt 32 With the function of fixing, the zipper head 34 can be fixed to the close contact portion 322 by the fixing gasket 40 after being pulled and slid to the close contact portion 322. In addition, the clamping washer 40 may be provided with an oblique notch 41 obliquely cut to the second chain groove 321 near one end of the chain head, so that when the slider 34 is pulled to the close contact portion 322, the oblique notch 41 can be followed along the oblique notch 41. Slip and smoother. In addition to the aforementioned functions, the setting of the clamping pad 40 can further strengthen the strength of the cutout 3221, so that the cutout 3221 will not tear the cutout 3221 due to the excessive pulling force of the zipper head 34. The addition of the fixing gasket 40 also has the aforementioned function of squeezing the right side plate 343 toward the middle, so that there is no gap between the right side plate 343 and the first link 311. Please refer to FIG. 7A and FIG. 7B, which are schematic diagrams of the insulation sheet of this creative embodiment. In order to further enhance the sealing effect, an insulation sheet 50 may be further provided on the back of the first and second chain straps 31 and 32 provided with the sealing portion 322. The insulation sheet 50 faces the chain head and leaves a The opening 51 allows the zipper head 34 to slide over and link in the direction of the contact portion 322, and the remaining three edges are closely contacted with the first and second chain straps 31 and 32 to further enhance the sealing effect of the zipper. 11 • M282934 [Schematic description] The first picture is a schematic diagram of a conventional storage bag. The second figure is a schematic diagram of a plastic zipper of a conventional storage bag. The third diagram A is a schematic diagram of the zipper of this creative embodiment. The third diagram B is a schematic diagram of a zipper head used in this creative embodiment. The fourth figure is a schematic diagram of the zipper chain of the creative embodiment. The fifth diagram A is a side view of the zipper pull of the creative embodiment before it is pulled to the front of the sealing portion. The fifth diagram B is a schematic side view of the zipper pull snapped to the tight contact portion of this creative embodiment. The sixth figure is a schematic diagram of the fixing gasket of the creative embodiment. The seventh diagram A is a schematic diagram of an insulation sheet in this creative embodiment. The seventh diagram B is a schematic side view of the insulation film after the installation of this creative embodiment.蛊 [Description of main component symbols] 10 Bag body 20 Zipper 201 Chain head 21 Chain strap 22 Sealing section 231 Upper guide groove zipper 202 Chain tail 211 Chain groove 23 Zipper head 232 Lower guide groove 30 12 M282934 301 Chain tail 31 First chain Belt 311 First chain groove 32 Second chain belt 321 Second chain groove 322 Close contact portion 3221 Notch 3222 Projection piece 33 Sealing portion 34 Zipper head 340 Separator piece 341 Upper guide groove 342 Lower guide groove 343 Right side plate 40 Clamping gasket 41 Inclined notch 50 Isolation sheet 51 Opening 60 Seal hole 13