201221078 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種裝設於例如汽車用坐部之坐部外罩或 . 沙發之坐部外罩等上的拉鏈，尤其關於一種構成為即便使 拉鏈於鏈布之鏈布寬度方向彎曲，鏈布亦不容易產生魅起 • 或者下陷的拉鍵。 【先前技術】 習知之拉鏈可大致分為普通式拉鏈及隱藏式拉鏈該兩種 類型。普通式拉鏈拉鏈係以如下方式構成，鏈齒以使其喃 合頭部自鏈齒安裝部側之鏈布側端緣突出於外方的狀態而 裝設在一對鏈布之相向之鏈齒安裝部。一般而言，就此種 普通式拉鍵·而言，當使左右之鏈齒嚙合後，成為鏈齒之至 少一部分露出於外部之狀態。 另一方面，隱藏式拉鏈（以下簡單地記載為隱形拉鏈）構 成為’此以當使左右之鏈齒唾合時使得自外部看不見鍵齒 之方式進行隱藏’近年來’自設計之觀點出發，多用於衣 服或鞋等領域。 此種隱形拉鏈之一例係揭示於例如日本專利特開2008_ . 1 19 0 7 6號公報.(專利文獻1)中。如圖9所示’該專利文獻1中 • 所記載之隱形拉鏈80係所謂織入式之隱形拉鏈8〇，其構成 為，織成鏈布82之同時，將鏈齒83安裝於該鏈布82上。 更具體地說明’專利文獻1之隱形拉鏈8〇包括左右一對 鏈帶81、及未圖示之滑件。而且，左右之各鏈帶81包含織 成之左右一對帶狀之鏈布82、及織入至鏈布82之螺旋狀之 154315.doc 201221078 鍵齒83。 鍵布82包括縫於衣料附拉鏈之製品上之鏈布主體部 82a、自鏈布主體部82a之一侧緣向鏈布寬度方向延伸且呈 U字狀彎折之鏈布彎折部82b、及自鏈布彎折部82b進一步 延伸且織入有鏈齒83之鏈齒安裝部82c。 鏈齒83係藉由使合成樹脂製之單絲成形為螺旋狀而構成 為連續狀，且包括：對於單絲以特定之間隔進行擠壓而形 成的膨大狀之嚙合頭部83a、自嚙合頭部83a於鏈布寬度方 向伸出之上下腳部83b、83e、及將相互鄰接之上述鏈齒83 之間連結之連結部83d。 此時，鏈齒83係，在使嚙合頭部83a朝向鏈布82之内側 的狀態下，於織成鍵布82之同時而使上下腳部Mb、83c織 入至鏈齒安裝部82c，藉此裝設於鏈布82上。進而，織成 鏈布82之後，使鏈布82於鏈布彎折部82b之區域呈υ字狀折 回而使鏈齒83之嚙合頭部83a自該鏈布彎折部82b突出於外 方，於此狀態下進行熱固化，藉此製造出鏈帶81。並且， 將所得之鏈帶81以2個為一組進行組合’藉此可獲得如圖9 所示之隱形拉鏈80。 尤其是專利文獻1中記載之鏈帶81中，於鏈布82之键齒 安裝部82c配置有：複數根上固定用經紗84a及下固定用經 紗84b ’其移行於鏈齒83之上腳部83b及下腳部83c之各個 之外面上；及複數根緊固用經紗84c，其交錯於鍵齒之上 下腳部83b、83c之間，且以交替地跨及上腳部83b與下腳 部83c之方式移行於經度方向。而且構成為，複數個下固 154315.doc •4· 201221078 定用經紗84b之中，較緊固用經紗84c更靠近鏈齒之嚙合頭 部83a側移行之下固定用經紗84b的總纖度，大於較緊固用 經紗84c更靠近哺合頭部83a側移行之上固定用經紗84a的 總纖度。 藉此，較緊固用經紗84c更靠近嚙合頭部83a侧移行之複 數個下固定用經紗84b可細密地配置，因此，當於左右之 鏈齒83相嚙合之狀態下隱形拉鏈80受到使左右之鏈布82相 互離開之方向上的強大的橫向拉力之情形時，亦可防止下 固定用經紗84b之位置產生偏移。因此，可有效防止左右 之鏈布82之鏈布彎折部82b之間產生間隙，且可維持隱形 拉鏈80之優良之隱蔽性。 先前技術文獻 專利文獻 專利文獻1 ·日本專利特開2008-1 19076號公報 【發明内容】 發明所欲解決之問題 近年來，隱形拉鏈發揮其優 不僅使用於各種服裝及 Μι 鞋等製品中，亦使用於例如汽車用坐部之坐部外罩及沙發 之坐部外罩等各種製品中。因此，希望隱形拉鍵構成為能 在各種環境及條件下使用。 例如’當隱形拉鏈使用於汽車用坐部之坐部外罩中之情 形時，汽車用坐部構成為，成形 肜為特足之形狀的軟墊體被 丄口P外罩彼覆。此情形時，根插、t 據/飞車用坐部之形狀等，有 時會將隱形拉鏈以於鏈布表昔古a上 邛衣背方向或鏈布寬度方向彎曲之 154315.doc 201221078 狀態裝設於坐部外罩上。而且，根據汽車用坐部之設計情 況’亦有時使隱形拉鏈於鏈布表背方向或鏈布寬度方向積 極地彎曲而裝設於坐部外罩。 然而，拉鏈中所使用之鏈布係織成或者編成，故而，通 常，厚度方向上較薄（厚度尺寸小），而且，為了使用縫紉 機將拉鏈穩定地縫於附拉鏈之製品上，構成為寬度方向較 大（寬度尺寸大）。具體而言，就例如習知之普通式拉鏈或 隱形拉鏈而言，鏈布之厚度尺寸設為丨mm以下，另一方 面，就鏈布之寬度尺寸，為了使利用縫紉機順利地縫製於 各種附拉鏈之製品上，一般設定為，能確保鏈布伸出部之 寬度尺寸為12 mm以上之大小。 此處’所s胃鏈布伸出部係指，當自鍵齒側觀察鍵帶時較 键齒之連結部伸出至更外側而露出之部分的鍵布區域，且 該鍵布伸出部之鍵布寬度方向之尺寸越大，則利用縫幼機 進行縫製時越能由縫紉機壓腳切實地壓住鏈布，因此能穩 定地進行縫製。 “ 於如上所述之習知之拉鏈中，形成為，鏈布於厚度方向 較薄而於寬度方向較寬（尤其是’鍵布伸出部能確们〇醜 以上之大小）。因此，即便是例如將隱形拉鍵於鍵布表背 方向弯曲而裝設於坐部外罩等附拉鍵之製品上之情形時， 亦可使鍵布自身比較容易地於厚度方向（表背方向）彎折， 因此，可將隱形拉鏈美觀地縫於附拉鏈之製品上。 對此’當例如使_拉鏈㈣布寬度方向㈣而裝設於 坐部外罩等附拉鍵之製品上之情形時，當使鍵布於鍵布寬 154315.doc 201221078 χ方向彎曲時，有時，抵接於隱形拉鏈之外周側之鏈布伸 出邛（呈凸狀彎曲之鏈布伸出部）會局部地大幅翹起或 ，而且，有時，抵接於隱形拉鏈之内周側之鏈布伸出部 .(呈凹狀彎曲之鏈布伸出部）會產生波紋狀之較大的皺槽。 因此，當例如鏈布伸出部大幅翹起等之情形時，當縫紉 機之縫切機塵腳未破實地壓住鏈布，且當例如鏈布伸出部 產生波紋狀之較大的皺褶之情形時，鏈布會局部地重疊， 因此’難以於隱形拉鏈之左右之鍵布分別利用縫幼機進行 縫製。 而且若縫製後鏈布亦產生較大之麵起、下陷、或者波 、文狀之敵褶，則存在破壞附拉鏈之製品之美觀（外觀品質） 進而，當於縫製後之隱形拉鏈之鏈布上產生如上 f述之較大_起、下陷、或者波紋狀之㈣之情形時， 若滑件沿著鍵齒排滑動，則亦有如下情形，即，鍵布與滑 件摩擦從而使得滑件之滑動阻抗增大，使得滑件之滑動性 .下降。 本發明係繁於上述習知之課題而成者，其具體目的在於 提供如下之鏈帶、及具有該鍵帶之拉鏈，其當使拉鏈於鍵 布之鏈布寬度方向彎曲而縫於附拉鏈之製品上之情形時， 能使鏈布保持大致平坦狀而穩定地進行縫製，而且，於縫 製後之鍵布上不容易產生局部的勉起、下陷、或者波紋狀 之皺褶。 解決問題之技術手段 為了達成上述目的，本發明所提供之拉鏈用鏈帶之基本 154315.doc 201221078 構成包含鏈布、裝設於上述鏈布之一側緣部的連續狀之鏈 齒，上述鏈齒包含嚙合頭部、自上述嚙合頭部於鏈布寬度 方向伸出之上下腳部、及將鄰接之上述鏈齒之間相互連結 之連結部，上述鏈布之另一側緣部超出上述鏈齒之上述連 結部側之端緣而伸出，且，該拉鏈用鏈帶之最主要之特徵 在於：上料布令之自上述鏈齒的上述連結部側之端緣之 位置至上述鏈布之另一側緣側之鏈布端緣的鏈布寬度方向 之伸出長度被限制為小於12 mm。 尤其是本發明中，較佳為，上述伸出長度被限制為1〇 mm以下，進而為6 mm以下。 發明之鏈帶中，較佳為，上述鏈布包含織物，並且( 括，布主體部、及置於上述鍵布主體部之—側緣側之4 P於上述鍵布主體部之另一側緣部配置有耳部 配置於上料部的經紗之張力高於配置於上述鍵布主體； 之上述耳部以外的經紗之張力。 妙此時’尤佳為’於上述耳部配置有4根以上6根以下之每 紗0 货月之鏈帶可較好地提供如下鏈帶， 述鏈布包含.絲士 & 甲， •料主體部；^f折部，其自上述 體…側緣向鏈布寬度方向延伸， 鏈齒安裝邱 u于狀f折， 。卩其自上述鏈布彎折部進一步延伸，且裝# 上述鏈齒；且，u 4 且褒6又 ^ 上述鏈齒係使上述嚙合頭部自上$ # # 折部突出於外方&壯 曰工述鏈布 β 裝設於上述鏈布之上述鏈齒安裝部。 發明之鍵帶可更佳地提供如下鍵帶，其中， 154315.doc 201221078 述鍵齒係於織成上诚絲t 乂建鍵布之同時被織入至上述鏈齒安裝 部。 另方面纟發明之鏈帶亦可較佳地提供如下鍵帶，其 中上述鍵布包含鏈布主體部、及自上述鍵布主體部之一 側緣向鏈布寬度方向延伸且裝設有上述鏈齒之鏈齒安裝 上述鍵齒係使上述喃合頭部自上述鍵齒安裝部側之鍵 布側端緣突出於外方 万而裝权於上述鍵布之上述鏈齒安裝 部。 而且’根據本發明’可提供包含以上述方式構成之鏈帶 的拉鍵^ 發明之效果 本發明之鏈帶之鏈布中’於該鏈布之另一側緣部具有超 出鏈齒之連結部側之端緣而伸出的鏈布伸出部，該鏈布的 自鍵齒之連結㈣之端緣之位置至鏈布之另—側緣側之鍵 布端緣的鏈布寬度方向之伸出長度（亦即，鏈布伸出部之 mm 鏈布寬度方向之尺寸）係設定為小於12 mm，較佳為⑺ 以下，尤佳為6 mm以下。 藉由如此將鏈布之上述伸出長度限制為小於12 ，從 而，當使鏈帶於鏈布之鏈布寬度方向彎曲時，可有效地減 小鏈布之鏈布伸出部局部地翹起、或下陷之大小、或波紋 狀之皺褶之大小。 尤其是，當本發明者一方面變更鏈布之上述伸出長度一 方面反覆進行各種實驗及討論之後獲知，較佳為，上述伸 出長度被限制為10 mm以下，進而是6 mm以下。亦即，若 154315.doc 201221078 上述伸出長度（鏈布伸出部之鏈布寬度方向之尺寸）為ίο mm以下’可進一步減小鏈布伸出部之翹起或者下陷的大 小、或波紋狀之皺褶的大小，使其變得不顯眼。 進而’若上述伸出長度為6 mm以下，則即便於加大彎 曲度（曲率）而使鏈帶於鏈布寬度方向彎曲之情形時，亦可 將鏈布之鏈布伸出部保持大致平坦狀。因此，即便當使該 鏈帶於鏈布之鏈布寬度方向彎曲而縫製於附拉鏈之製品上 之情形時’亦可一方面使鏈布之鏈布伸出部保持大致平坦 狀一方面進行縫製’故而可穩定地進行鏈帶之縫製。進 而，此時，因鏈布之鏈布伸出部於鏈布寬度方向變得極 細，故而，亦具有削減拉鏈之製造成本，而且減輕拉鏈之 重量的效果。 而且，本發明之鏈帶中，能使縫附於附拉鏈之製品上之 後的鏈布上不會產生局部的麵起、下陷、或者波紋狀之敏 摺，或者，即便產生局部的翹起、下陷、或者波紋狀之敵 相亦較小為不顯眼之程度，因此，能防止縫有該鍵帶之附 拉鏈之製品的外觀品質下降。 進而’於使㈣鍵帶而構成之拉鍵t，滑件進行滑動時 滑件與鍵布不容㈣擦，故而，可穩线麵優良 的滑動性。 於如此之本發明之鏈帶中，鏈布 古士挪加《 叩匕3織物，並且包括鏈 布主體部、及配置於鏈布主體邱 唧體〇卩之—側緣側之鏈齒安梦 部。而且，於鏈布主體部之另一側緣部配 、 於該耳部之經紗的張力高於配置於鏈布主體部之二部= I54315.doc •10· 201221078 的經紗之張力。 藉此’能穩疋地保持鏈布伸出部之寬度尺寸受到限制的 鍵布之形態。因此’當使鏈帶彎曲時，能切實地防止鏈布 伸出部產生翹起、下陷、或者波紋狀之皺褶，從而鏈帶之 縫製變得更容易。而且，因配置於耳部之經紗具有較高的 張力，故可使鏈布主體部之較耳部更靠近内側的編織組織 穩定，進而，可擴大鏈布中所採用之編織組織的選擇範 圍。 此時，於鏈布之耳部配置有4根以上6根以下之經紗。因 配置於耳部之經紗為4本以上，故可更穩定地保持鍵布之 形態。尤其是，即便緯紗之張力較強之情形時亦可於耳部 穩定地折回緯紗，從而可穩定地保持鍵布之形態。另一方 面，因配置於耳部之經紗為6根以下，故可防止鍵布之耳 部側之張力變得過強，且可防止鏈布之耳部側產生較大收 縮而於鍵布上產生所謂正斜布紋（bias)。 本發月可有效地用作所謂隱形拉鍵用鍵帶，其巾，上述 鏈布包含.鏈布主體部；鏈布彎折部，其自鏈布主體部之 2緣向鏈布寬度方向延伸，且別字狀f折；及鏈齒安 :传其：鏈布f折部進—步延伸且裝設有鏈齒，·而且， 布：:::頭部自鍵布㈣突-…裝設於鍵 二本構成於織成鏈布之同時_織 進而，本發明亦可有效地用作所謂普通式鏈帶，其令， 1543I5.doc -il · 201221078 上述鏈布包含：鏈布主體部；及，鏈齒安裝部，其自鍵布 主體部之一側緣向鏈布寬度方向延伸且裝設鏈齒；而且， 鏈齒係’使嚙合頭部自鏈齒安裝部側之鏈布側端緣突出於 外方而裝設於鏈布之鏈齒安裝部。 作為如此之本發明之拉鍵用鍵帶或者普通式鍵帶，即便 於鏈布之鏈布寬度方向彎曲，亦可使鏈布之鏈布伸出部不 會產生局部的翹起、下陷、或者波紋狀之皺褶，或者，即 便產生局部的翹起、下陷、或者波紋狀之皺褶亦較小為不 顯眼之程度。 而且’於具有上述構成之鏈帶的本發明之拉鏈中，鍵布 之鏈布伸出部的鏈布寬度方向之尺寸設定為小於12 較佳為10 mm以下’尤佳為6 mm以下。因此，當於使本發 明之拉鏈於鏈布寬度方向彎曲之狀態下縫於附拉鍵之製品 上之時，可穩定地進行鏈帶之縫製。 而且，縫於附拉鏈之製品上之拉鏈係，可使鍵布上不會 產生局部的翹起、下陷、或者波紋狀之皺褶，或者，即便 產生局部的翹起、下陷、或者波紋狀之皺褶亦較小為不顯 眼之程度，因此可防止附拉鏈之製品之外觀品質下降。另 外，此時，滑件進行滑動時該滑件與鏈布不容易摩擦，因 此’可穩定地確保優良之滑件之滑動性。 【實施方式】 以下，對於本發明之實施之形態，列舉實施例且參照圖 式進行詳細說明。另外，本發明絲毫不受以下所說明之實 施例的限制，只要具有與本發明實質上相同的構成、且發 154315.doc •12· 201221078 揮同樣的作用效果，則能進行多種變更。 例如，以下之實施形態中說明的連續狀之鏈齒係藉由使 單絲成形為螺旋狀而形成，但本發明並不限於此，連續狀 之鏈齒亦可藉由使單絲成形為鋸齒狀而形成。 實施例1 圖1係表示本實施例1中之隱形拉鏈之背面側的背面圖， 圖2係以便於瞭解之方式示意性地表示該隱形拉鏈的剖面 之剖面圖。而且，圖3係該隱形拉鏈之背面侧之照片的副 本’圖4係該隱形拉鍵之正面側之照片的副本。 另外，圖2中，為了以便於瞭解之方式表示鏈布之經紗 的狀態，#意性地表示左纟之鏈齒相啼合讀態下的隱形 拉鏈之剖面，根據圖式，係以即便左右之鏈齒相嚙合、左 右之鍵布之鍵布彎折部亦相互離開之㈣進行表示，但實 際之隱形拉鏈中當左右之鏈齒㈣合之情形時，如後所 述，能以使左右之鏈布之鏈布彎折部相互密接而自外面側 看不見鏈齒的方式進行隱藏。 Μ卜之說明中’所謂前後方向係指鍵布之長度方 向’且與滑件滑動之滑動方向為相同之方向。而且，所謂 左右方向係指鏈布之鏈布主體部之鏈布寬度方向，立虫鍵 布主體部之鏈布面平行，並且與鏈布長度方向正交厂、 所謂上下方向係指與鍵布之鏈布面正交之鍵布表 二==是’對於鍵布而言，將裝設有鏈齒之側之方 ==將其相反側之方向規定為下方。此時， ㈣拉鏈之下面側則成為該隱形拉物出於外部之正面 154315.doc -13- 201221078 側。 本實施例1中之隱形拉鏈10可例如裝設於汽車用坐部之 坐部外罩等附拉鏈之製品上而使用。該隱形拉鏈1 0包含： 形成有鏈齒排22之左右一對鏈帶20、固定安裝於各鏈帶20 之鏈齒排22的前端側之上止擋11、固定安裝於各鏈帶2〇之 鏈齒排22的後端側之下止擋12、及以可沿著鏈齒排22滑動 之方式而安裝之隱形拉鏈用滑件13。 該隱形拉鏈10中構成為，藉由使滑件13向上止擋11側滑 動，使左右之鏈齒排22嚙合而將隱形拉鏈10封閉，而且， 藉由使滑件13向下止檔12側滑動，使左右之鏈齒排22分離 而打開隱形拉鍵10。另外，該隱形拉鍵10中之上止檔U、 下止擋12、及隱形拉鏈用滑件13係與先前以來通常使用者 同樣地構成。 本實施例1中，左右之各鏈帶20包含經織成之鏈布21、 及裝設於鏈布21上之螺旋狀之鏈齒23，且藉由將呈螺旋狀 連續之鏈齒23織入至鏈布21上而形成有鏈齒排22。 鏈布21包含：鏈齒安裝部21a，其織入有鏈齒23 ;鏈布 彎折部21b，其自鏈齒安裝部21a之一側緣於鏈布寬度方向 延伸’且呈U字狀彎折；及鏈布主體部21c，其自鏈布彎折 部2lb進一步延伸，成為縫附於附拉鏈之製品上之部分。 鍵齒23係藉由使包含聚醯胺或聚酯等熱塑性樹脂之單絲 成形為螺旋狀而構成，且包含：嚙合頭部23 a;上下腳部 23b、23c ’其以自喃合頭部23 a於鏈布寬度方向延伸之方 式而形成；及連結部23d，其將上腳部23b或者下腳部23e 154315.doc .14- 201221078 之延端部與前後鄰接之鏈齒23的下腳部23c或者上腳部23b 連結。該鍵齒23係以使嚙合頭部23a自鏈布21之鏈布彎折 部21b突出於外方的方式裝設於鏈布21之鏈齒安裝部21a。 本實施例1中之鏈布2丨係藉由使導紗器支轴（carrier ba〇 於經紗之開口内往返運動來對地緯紗24a進行襯緯而織 成’如圖2所示，鏈布主體部21c及鏈布彎折部21b係由包 含雙紗之地緯紗24a與複數個地經紗24b織成之織物。而 且’鏈布主體部21c之形成有鏈布彎折部21b之側的相反側 之鏈布端緣係藉由穿入未圖示之織針，依序勾住第二位地 緯紗24a將線圈折回端連結而形成。 於該鏈布21之鏈齒安裝部2丨a配置有：上固定用經紗 24c，其於各鏈齒23之上腳部2扑之上面側沿經度方向移 行，下固定用經紗24d ’其於各鏈齒23之下腳部23c之下面 側沿經度方向移行；緊固用經紗24e，其以於上下腳部 23b、23c之間交錯之方式沿經度方向移行；定位用經紗 24f ’其限制上下固定用經紗24c、24d之緯度方向之位 置；及地緯紗24a ’其以襯緯之方式編織於鏈布主體部2 i c 及鏈布彎折部21b。使用該等經紗24c、24d、24e、24f及 地緯紗24a而構成鏈齒安裝部21a，故可將鏈齒23牢固地織 入至該鍵齒安裝部21 a，從而使鏈齒23之安裝狀態穩定。 而且’該鍵布21中’作為配置於鏈齒安裝部21a、鏈布 彎折部21b、及鏈布主體部21c之各種經紗24b〜24f，可使 用具有160德士以上550德士以下之粗度之聚酯加工紗；作 為地緯紗24a之單紗，可使用具有550德士以上11〇〇德士以 154315.doc -15- 201221078 下之粗度之聚酯加工紗。 尤其是，本實施例1中，配置於鏈齒安裝部21a、鏈布彎 折部21b、及鏈布主體部21c之各種經紗24b〜24f具有33〇 德士之粗度，地緯紗24a之單紗具有700德士之粗度。另 外，本發明中，地緯紗及各種經紗之粗度及材質並無特別 限疋，可根據鍵齒之尺寸或隱形拉鏈之用途等而適當變 更。 如此之本實施例1之隱形拉鍵1〇中，鍵布21之鏈布主體 部21c具有超出鏈齒23之連結部23d側之端緣而伸出的鍵布 伸出部25。亦即’於本實施例1之隱形拉鏈1〇中，就該隱 形拉鏈10之左右方向，當將鏈齒23之連結部23d側之端緣 的位置作為基準位置之情形時，以自該基準位置至鏈布21 之鏈布主體部21c侧之鏈布端緣的伸出長度X滿足χ>〇 mm 之方式’設定鏈布主體部21c之鏈布寬度方向之尺寸。此 情形時，當自鏈齒23側觀察隱形拉鏈1〇時，鏈布伸出部25 較鏈齒23之連結部23d進一步露出於外側。 藉由如上所述使自上述基準位置至鏈布端緣的伸出長度 X滿足X>0 mm，可於左右之鏈布21上確實地設置鏈布伸出 部25。藉此’當如下文所述使用織機一方面織入鏈齒23 一 方面織成鏈布21時，於織機之下游側，能夠一方面利用未 圖示之上下輥夹著所織成的鏈布21之鏈布伸出部25進行拉 伸（搬送）’ 一方面順利地織成鍵布21。因此，能以高精度 穩定地織出具有預期之編織組織的鏈布21，而不會使鏈布 21捲起或彎折。 I54315.doc •16· 201221078 進而，於本實施例1中，鏈布21之鍵布伸出部25的鏈布 寬度方向之尺寸被限制為6 mm以下。亦即，以自上述基準 位置至鏈布21之鏈布主體部21c側之鏈布端緣的伸出長度X 滿足0 mm<XS6 mm之方式，設定鍵布主體部21c之鍵布寬 度方向之尺寸。 此時，當如上所述將配置於鏈布主體部21c之地經紗24b 之粗度設定為33 0德士，並且，鏈布伸出部25具有例如3 mm之寬度尺寸之情形時，於該鏈布伸出部25約配置有20 根地經紗24b(圖2中，為了易於表現本實施例1之隱形拉鏈 1〇之特徵’減少了配置於鏈布伸出部25之地經紗24b的根 數而表示剖面）。另外，於本實施例1中，藉由減少配置於 鏈布21之鏈布主體部21c的經紗之根數（尤其是配置於後述 之耳部26以外之鏈布主體部21c的經紗之根數），而限制鏈 布21之鏈布伸出部25的鏈布寬度方向之尺寸。 藉由如上所述使鏈布伸出部25之伸出長度X(鏈布寬度方 向之尺寸）為6 mm以下，從而，當如例如圖5所示，使隱形 拉鍵10(鏈帶20)於鏈布21之鏈布寬度方向彎曲時，能夠有 效地抑制鏈布伸出部25局部地翹起、下陷，或者有效地抑 制鏈布伸出部25產生波紋狀之皺褶，從而能夠使鏈布伸出 部25保持平坦狀。 此時，使上述伸出長度X越短，則即便使鏈帶2〇於鏈布 寬度方向彎曲時越容易使鏈布伸出部25保持平坦狀，另一 方面’若縮短鏈布伸出部25之鏈布寬度方向之尺寸，則當 將鏈帶20之鏈布主體部21c縫於附拉鏈之製品上時，可能 154315.doc 201221078 難以進行鏈帶20之縫製。 亦即’於本實施例1之隱形拉鏈10中，當例如鍵布21之 自上述基準位置至鏈布端緣的伸出長度X滿足〇 mm之情形時’與該伸出長度χ滿足4 mmcxsG mm之情形 相比，即便使鏈帶20於鏈布寬度方向大幅地彎曲，亦能有 效地抑制鏈布伸出部25局部的翹起等，從而可使鍵布伸出 部25穩定地保持平坦狀。 另一方面，當例如鏈布21之自上述基準位置至鏈布端緣 的伸出長度X滿足4 mm<X^6 mm之情形時，與該伸出長度 X滿足0 mm<X$2 mm之情形相比，當例如使用縫紉機將鏈 帶20縫於附拉鏈之製品上時，能夠利用縫紉機之縫紉機壓 腳更穩定地壓住鏈布21之鏈布主體部21c，因此，能更順 利地進行鏈帶20之縫製。 而且，當鏈布21之自上述基準位置至鏈布端緣的伸出長 度X滿足例如2 mm<XS4 mm之情形時，於使鏈帶20於鏈布 寬度方向大幅地彎曲時，能夠使鏈布伸出部25保持平坦 狀’而且’當將鏈帶2〇縫於附拉鏈之製品上時，能夠順利 地進行鏈帶20之縫製。另外，於本實施例！中，鏈布21之 上述伸出長度X之大小可根據隱形拉鏈1〇之用途等而於〇 mm<X^6 mm之範圍内任意地選擇。 而且，於本實施例1之隱形拉鏈10中，鏈布21之鏈布主 體部21c具有配置於鏈布彎折部21b側的相反側之鏈布側緣 部之耳部26 ’配置於該耳部26之地經紗24b的張力高於配 置於鏈布主體部21 c之耳部26以外的地經紗24b之張力。藉 154315.doc •18· 201221078 由如上所述使配置於耳部26之地經紗糾具有較高的張 力，則如例如圖3及圖4中之隱形拉鏈1〇之照片的副本所 不，與配置於其内側的地經紗24b相比，配置於 地經紗24b處於強力伸展之狀態。 此時，配置於耳部26之地經紗24b的根數較佳為設定為4 根、上ό根以下，於本貫施例1中之耳部2 6以具有較高張力 之方式配置有6根經紗。於鏈布21之耳部26，以4本以上之 根數配置有高張力的經紗，藉此’即便於例如施加於地緯 汐24a之張力較高（強）之情形時、或使鏈布21於鏈布寬度方 向彎曲之情形時，亦可防止鏈布21之耳部26側之端緣產生 扭轉或彎折’從而可穩定地保持鍵布21之形態。 而且’藉由於耳部26配置4根以上高張力之經紗，可使 較耳部26更内側之鍵布21之編織組織穩定，且即便例如對 隱形拉鏈10進行洗滌等時亦能防止針織網眼之位置產生偏 移。進而，亦可大幅地擴大鏈布2丨中所採用的編織組織之 選擇自由度。 另一方面，藉由使配置於鏈布21之耳部26的高張力之經 紗為6根以下，可防止鏈布21之耳部26的鏈布長度方向之 張力變得過強。藉此，能防止鏈帶2〇產生所謂正斜布紋之 形態，該形態係指，鏈布21整體彎曲，使鏈布21之耳部26 側之鏈布側緣部大幅地收縮而使該鏈布侧緣部成為凹狀。 接著’對於本實施例1中之隱形拉鏈1 〇之製造方法進行 說明。 首先，製造鏈帶20。具體而言，使用織機，使導紗器支 154315.doc •19· 201221078 轴於由特定之根數而配置之經紗的開口内往返運動而插入 緯紗，藉此，以預期之編織組織織成具有特定之鏈布寬度 方向之尺寸的鏈布21。此時，調整經紗之張力，使得配置 於鏈布21之耳部26之地經紗24b的張力增高，從而織成鏈 布21。 而且，以上述方式織成鏈布21之同時，將由單絲形成之 螺旋狀之鏈齒23，以其嚙合頭部23a朝向鏈布21之内側的 狀態而織入至該鏈布21的鏈齒安裝部21a。 然後，於键布21織成之後，使成為鍵布21之鍵布彎折部 21b之鏈布部分呈u字狀折回’從而使鏈齒23之嗤合頭部 23a自U字狀之鏈布彎折部21b突出於外方。進而，對於以 上述方式彎折之形態的鍵布21進行熱固化處理。藉此，可 獲得嗔合頭部23a自鏈布彎折部21b突出於外方之隱形拉键 用鏈帶20。 進而’藉由將所得之鏈帶20以2個為一組進行組合，並 且將滑件13以可滑動之方式安裝於該等鏈帶2〇之鏈齒排22 上，藉此，製造出本實施例1之隱形拉鏈1 〇。該隱形拉鏈 10中，當使左右之鏈齒23相嗜合時，可使左右之鍵布21之 鏈布彎折部21b彼此密接，藉此，當自下面側（露出於外部 之側）觀察隱形拉鍵10時’可藉由鍵布21(尤其是鍵布臀折 部21b及鏈布主體部21c)將處於嚙合狀態之左右之鏈齒23 隱藏。 而且，與鏈布21之鏈布伸出部25的伸出長度X(鏈布寬度 方向之尺寸）為6 mm以下的習知之隱形拉鏈1 〇相比，以上 154315.doc •20· 201221078 述方式而製造之本實施例1之隱形拉鏈10設定為極小。因 此，可削減隱形拉鏈10之製造成本，且減輕重量，並且， 即便當使該隱形拉鏈10如圖5所示於鏈布21之鏈布寬度方 向彎曲之情形時，亦可有效地抑制鏈布21之鏈布伸出部25 局部地翹起、下陷，或者有效地抑制鍵布伸出部25產生波 紋狀之皺褶’從而可使鏈布21之鏈布主體部21c保持大致 平坦狀。 因此’當使本實施例1之隱形拉鏈10成為於鏈布21之鏈 布寬度方向彎曲的狀態，而縫附於汽車用坐部外罩等附拉 鍵之製品上之情形時’於將鏈布21之鍵布主體部21c(尤其 是，鏈布主體部21c之鏈布彎折部21b侧之位置）與附拉鏈 之製品縫合時’可減小鏈布21上產生之鏈布表背方向之起 伏’或者防止鏈布表背方向產生起伏，從而可一方面使鍵 布21之鏈布主體部21 c保持大致平坦狀，一方面穩定地進 4亍隱形拉鍵10(或者鍵帶20)之縫製。 進而，本實施例1之隱形拉鏈10係，在於鏈布21之鏈布 寬度方向贊曲之狀態下縫於附拉鍵之製品上之後’可使鏈 布21上不會產生局部的翹起、下陷、或者波紋狀之皺褶， 或者即便產生局部的翹起、下陷、或者波紋狀之皺褶亦較 小為不顯眼之程度’因此，可防止缝著有該隱形拉鏈丨〇之 附拉鏈之製品的外觀品質下降。 而且，當使滑件13滑動而開閉隱形拉鏈1〇時，該隱形拉 鏈10之鏈布21不會產生局部的翹起、下陷、或者波紋狀之 皺褶，或者產生較小的局部的翹起、下陷、或者波紋狀之 154315.doc •21 · 201221078 皺褶，故而，不會因滑件13與鏈布21之摩擦而導致滑件13 之滑動阻抗增大’能防止滑件丨3之滑動性下降。 而且’本實施例1之隱形拉鍵1 〇中，如上所述，於鍵布 21之鍵布主體部21 c側之鏈布側緣部配置有具有較高張力 的4根以上6根以下之經紗，藉此形成耳部26。藉此，能穩 定地保持鏈布21之形態（尤其是，鏈布主體部21c之形態）。 因此’當使隱形拉鏈10於鏈布寬度方向彎曲而縫製於附拉 鏈之製品上之情形時’可更確實地使鏈布21之鏈布伸出部 25保持大致平坦狀，從而穩定且美觀地進行隱形拉鏈1〇之 縫製。 實施例2 圖6係本實施例2中之隱形拉鍵之剖面圖。 另外，本實施例2之隱形拉鏈30中，鏈齒43並非如上述 之實施例1所示於織成鏈布之同時織入至鏈齒安裝部，而 疋’於織成具有特定之鍵布寬度尺寸之鏈布41之後，將鏈 齒43縫於該鏈布41之鏈齒安裝部41a而構成。以下，對本 實施例2之隱形拉鏈30進行詳細說明。 本實施例2之隱形拉鏈30包括：左右一對鏈帶4〇，其具 有藉由鍵齒43而形成之鍵齒排；未圖示之上止擔，其固定 安裝於各鏈帶40之鏈齒排之前端側；未圖示之下止擋，其 固又安裝於各鏈帶40之鏈齒排之後端側；及未圖示之隱形 拉鏈用滑件，其以可沿鏈齒排滑動之方式而安裝。 左右之各鏈帶40包含經織成之鏈布41、及縫於鏈布41上 之螺旋狀之鏈齒43 ’且藉由將鏈齒43縫於鍵布41上而形成 154315.doc •22- 201221078 鏈齒排。 鏈布41包3 .鏈齒安裝部4U，其縫有鏈齒u ;鏈布彎 折Mlb纟自鍵齒安裝部41 a之一侧緣於鍵布寬度方向延 伸’且呈u字狀彎折；及鏈布主體部4le，其自键布響折部 41b進一步延伸’成為縫附於附拉鏈之製品上之部分。 此時，作為配置於鍵齒安裝部4丨a、鏈布彎折部41 b、及 鏈布主體部41C之各種經紗，可使用具有330德士之粗度的 聚知加工紗，作為緯紗之單紗，可使用具有7〇〇德士之粗 度的聚酯加工紗。 鍵齒43包含：鳴合頭部43a ;上下腳部43b、43c，其以 自嚙合頭部43a於鏈布寬度方向延伸之方式形成；及連結 4 43d，其將上腳部43b或者下腳部43c之延端部與前後鄰 接之鏈齒之下腳部43c或者上腳部43b連結。 而且，該鏈齒43係以於上下腳部43b、43c之間插通有芯 線48的狀態下，使嚙合頭部43a自鏈布41之鏈布彎折部41匕 突出於外方之方式，藉由縫製紗47之雙線鎖縫而縫於鏈布 41之鏈齒安裝部4la。 於如此之本實施例2之隱形拉鏈30中，鏈布41包含鏈布 伸出部45，該鏈布伸出部45當自鏈齒43側觀察隱形拉鏈3〇 時較鏈齒43之連結部43d伸出至更外側而露出。亦即，於 本實施例2之隱形拉鏈30中，就該隱形拉鏈3〇之左右方 向，當將鏈齒43上的連結部43d側之端緣之位置作為基準 位置之情形時，以自該基準位置至鏈布41之鏈布主體部 41c側之鏈布端緣的伸出長度χ滿足χ>〇爪爪的方式設定鍵 154315.doc •23· 201221078 布主體部41c之鏈布寬度方向之尺寸。 藉由如上所述使自上述基準位置至鏈布端緣的伸出長卢 X滿足X>0 mm，可於左右之鏈布41上設置鏈布伸出部45。 藉此’於例如隱形拉鏈30之製造中，當為了對鏈布41實施 熱固化處理或染色處理等而以鏈條之狀態進行搬送時，可 利用上下輥確實地夾住鏈布41之鏈布伸出部45，且可對鍵 條穩定地貫施特定之處理’而鍵布41不會捲起或贊折。 而且，於本實施例2之隱形拉鏈3〇中，鏈布41之鏈布伸 出部45的鏈布寬度方向之尺寸被限制為6 mrn以下。亦即， 以自上述基準位置至鏈布41之鏈布主體部41c側之鏈布端 緣的伸出長度X滿足0 mm<XS6 mm之方式，設定鍵布主體 部41c之鏈布寬度方向之尺寸。 進而，於本實施例2之隱形拉鏈3〇中，鏈布41之鏈布主 體部41c具有配置於鏈布彎折部4邝側的相反側之鏈布側緣 部之耳部46，配置於該耳部46之經紗的張力高於配置於鏈 布主體部41c之耳部46以外之經紗的張力。此時，於耳部 46 ’以較高之張力而配置有6根經紗。藉此，可使鏈布41 之形態穩定，而不會使键布41上產生正斜布紋。 具有以上構成之本實施例2之隱形拉鏈3〇中，鏈布41之 鏈布伸出部45的伸出長度X被限制為6 mm以下，而且，於 鏈布41之鏈布主體部41c側之鏈布側緣部形成有配置有具 有較高張力的經紗之耳部46。因此，本實施例2中之隱形 拉鍵30可獲得與上述實施例i中之隱形拉鏈3〇相同的效 果0 154315.doc •24· 201221078 實施例3 圖7係本實施例3中之拉鏈之正面圖，圖8係該拉鏈之剖 面圖。 本實施例3中之普通式拉鏈5〇(以下，將普通式拉鏈簡單 地記載為「拉鏈」）包含：左右一對鏈帶60，其配置有鏈 齒排62 ·’上止擋51 ’其固定安裝於各鏈帶60之鏈齒排62之 前端側；下止擋52，其固定安裝於各鏈帶6〇之鏈齒排62之 後端側；及滑件53，其以可沿著鏈齒排62滑動之方式安 裝。此時’上止擋51、下止擋52、及滑件53係與先前以來 通常使用者相同地構成。 本實施例3中，左右之各鏈帶6〇包含經織成之鏈布61、 及缝於鏈布61上之螺旋狀之鏈齒63，藉由將鏈齒63縫於鏈 布61上而形成鏈齒排62。 鍵布61包含：鍵齒安裝部61a，其縫有鏈齒63 ;及鍵布 主體部61b ’其自鏈齒安裝部61a之一側緣於鏈布寬度方向 延伸’且縫附於附拉鏈之製品上此時，作為配置於鏈齒 安裝部61a及鏈布主體部6ib之複數個經紗，可使用具有 330德士之粗度之聚酯加工紗；作為緯紗之單紗，可使用 ’ 具有700德士之粗度之聚酯加工紗。 • 鏈齒63包含：嚙合頭部63a ;上下腳部63b、63c，其以 自嚙合頭部63 a起於鏈布寬度方向延伸之方式形成；及連 結部63d，其將上腳部63b或者下腳部63c之延端部與前後 鄰接之鏈齒之下腳部63c或者上腳部63b連結。 再者’該鏈齒63係以於上下腳部63b、63c之間插通有芯 154315.doc -25- 201221078 線68之狀態下’使喷合頭部63a自鏈布61之鍵齒安裝部61a 側之鏈布側端緣突出於外方的方式，藉由縫製紗67之雙線 鎖縫而縫於鏈齒安裝部61&。 於如此之本實施例3之拉鍵5〇中，鏈布61具有键布伸出 部65 ’該鏈布伸出部65係當自鏈齒63側（正面側）觀察拉鏈 50時較鍵齒63之連結部63d伸出至更外側而露出。亦即， 於本實施例3之拉鏈50中，就該拉鏈50之左右方向，當將 鍵齒63的連結部63d側之端緣之位置作為基準位置之情形 時’以自該基準位置至鏈布61之鏈布主體部611)側之鏈布 端緣的伸出長度X滿足χ>〇爪爪之方式設定鏈布主體部6ib 之鍵布寬度方向之尺寸。 藉由如上所述使自上述基準位置至鏈布端緣的伸出長度 X滿足X>0 mm，可於左右之鏈布61上設置鏈布伸出部65。 藉此，於例如拉鏈50之製造中，當實施將鏈齒63縫於鏈布 61之縫製處理或鍵布61之染色處理等時，可利用上下輥確 實地夾住鏈布61之鏈布伸出部65，，且對鏈條穩定地實施 特疋之處理’而不會使鍵布61產生捲起、彎折。 又於本實施例3之拉鏈50中，鏈布61之鏈布伸出部65的 鏈布寬度方向之尺寸被限制為6 mm以下。亦即，以自上述 基準位置至鏈布61之鏈布主體部61b側之鏈布端緣的伸出 長度X滿足0 mm<XS6 mm之方式，設定鏈布主體部6ib之 鏈布寬度方向之尺寸。 進而，於本實施例3之拉鏈50中，鏈布61具有配置於键 布主體部61b側之鏈布側緣部的耳部66，配置於該耳部66 154315.doc •26· 201221078 之經紗的張力高於拍之於鏈布主體部6ib之耳部66以外的 經紗之張力。此時，於耳部66，以較高的張力配置6根經 紗。藉此，可使鏈布61之形態穩定，而使鏈布61上不會產 生正斜布紋。 於具有以上構成之本實施例3之拉鏈50中，因鏈布61之 鍵布伸出部65的伸出長度X被限制為6 mm以下，故即便當 使該拉鍵50於鍵布寬度方向彎曲之情形時，亦可有效地抑 制鏈布61之鏈布伸出部65局部地翹起、下陷，或者有效地 抑制波紋狀皺褶之產生，從而可使鏈布61保持大致平坦 狀。 因此’當使本實施例3之拉鏈50成為於鍵布61之鏈布寬 度方向彎曲的狀態，而縫附於汽車用坐部外罩等附拉鏈之 製品上之情形時，可將鏈布61之鏈布主體部616與附拉鏈 之製品穩定地縫合。 進而，本實施例3之拉鏈50中，當在於鏈布61之鏈布寬 度方向彎曲之狀態下縫於附拉鍵之製品上之後，亦可使鍵 布61上不會產生局部的翹起、下陷、或者波紋狀之皺褶， 或者’即便產生局部的翹起、下陷、或者波紋狀之皺褶亦 較小為不顯眼之程度。因此，可防止縫有該拉鍵5 〇之附拉 鏈之製品之外觀品質下降，而且，可防止滑件53之滑動性 下降。 【圖式簡單說明】 圖1係表示本發明之實施例！中的隱形拉鏈之背面側之背 面圖。 I54315.doc -27· 201221078 圖2係示意性地表示該隱形拉鏈之剖面之剖面圖。 圖3係該隱形拉鏈之背面側之照片的副本。 圖4係該隱形拉鏈之正面側之照片的副本。 圖5係表示該隱形拉鏈於鏈布寬度方向彎曲之狀態的背 面圖。 圖6係本發明之實施例2中的隱形拉鏈之剖面圖。 圖7係本發明之實施例3中的拉鏈之正面圖。 圖8係該拉鍵之剖面圖。 圖9係表示習知之隱形拉鍵之剖面圖。 【主要元件符號說明】 10 ' 30 ' 80 隱形拉鏈 11 上止擋 12 下止擋 13 隱形拉鏈用滑件 20 ' 40 ' 60 ' 81 鏈帶 21、 41、 61 > 82 鍵布 21a ' 41a '61a' 82c 鏈齒安裝部 21b 、41b ' 82b 鍵布彎折部 21c ' 41c 、61b、 82a 鍵布主體部 22 ' 62 鍵齒排 23、 43、 63 ' 83 鍵齒 23a 、43a 、63a ' 83a 噛合頭部 23b 、43b > 63b > 83b 上腳部 23c 、43c 、63c、 83c 下腳部 154315.doc -28 - 201221078 23d、43d ' 63d、83d 連結部 24a 地緯紗 24b 地經紗 24c ' 84a 上固定用經紗 24d、84b 下固定用經紗 24e、84c 緊固用經紗 24f 定位用經紗 25 、 45 、 65 鏈布伸出部 26 、 46 ' 66 耳部 47、67 縫製紗 48、68 芯線 50 拉鍵 51 上止擋 52 下止擂 53 滑件 X 伸出長度 154315.doc ·29·2012. The invention relates to a zipper mounted on, for example, a seat cover of an automobile seat or a seat cover of a sofa, and the like, in particular, a zipper The chain cloth is bent in the width direction of the chain cloth, and the chain cloth is not easy to produce the charm or the depressed button. [Prior Art] Conventional zippers can be roughly classified into two types: a normal zipper and a hidden zipper. The zipper zipper is configured in such a manner that the sprocket is attached to the opposing sprocket of the pair of chain fabrics such that the merging head protrudes from the outer side of the chain-side end edge of the sprocket mounting portion side. Installation department. In general, in the case of such a conventional pull button, when the left and right fastener elements are engaged, at least a part of the fastener elements are exposed to the outside. On the other hand, the concealed zipper (hereinafter simply referred to as a concealed zipper) is configured to "make the way of hiding the left and right sprocket teeth so that the key teeth are not visible from the outside. It is mostly used in the fields of clothes or shoes. An example of such a hidden zipper is disclosed in, for example, Japanese Patent Laid-Open Publication No. 2008-1197-1768 (Patent Document 1). As shown in FIG. 9, the invisible zipper 80 described in the above-mentioned Patent Document 1 is a so-called woven occult zipper 8 〇 which is configured to sew the chain cloth 82 while attaching the sprocket 83 to the chain cloth. 82. More specifically, the concealed zipper 8 of Patent Document 1 includes a pair of left and right chain belts 81 and a slider (not shown). Further, each of the left and right chain belts 81 includes a pair of left and right belt-like chain fabrics 82, and a spiral shape 154315.doc 201221078 key teeth 83 woven into the chain cloth 82. The key cloth 82 includes a chain main body portion 82a that is sewn to the product of the zipper attached to the clothing, and a chain bending portion 82b that is bent in a U-shape from a side edge of one of the main fabric main body portions 82a and that is bent in a U-shape. The sprocket attachment portion 82c of the sprocket 83 is further extended and woven from the chain-bending portion 82b. The sprocket 83 is formed into a continuous shape by forming a monofilament made of synthetic resin into a spiral shape, and includes an inflated engaging head portion 83a formed by pressing at a specific interval on the monofilament, and a self-engaging head. The portion 83a extends the upper and lower leg portions 83b and 83e and the connecting portion 83d that connects the adjacent fastener elements 83 in the chain width direction. At this time, the sprocket 83 is woven into the key cloth 82 while the engaging head portion 83a is directed to the inner side of the chain cloth 82, and the upper and lower leg portions Mb and 83c are woven into the element attaching portion 82c. This is mounted on the chain cloth 82. Further, after the chain cloth 82 is woven, the chain cloth 82 is folded back in a U-shaped area in the region of the chain bending portion 82b, and the engaging head portion 83a of the fastener element 83 protrudes outward from the chain bending portion 82b. Thermal curing is performed in this state, whereby the fastener tape 81 is manufactured. Further, the obtained chain belt 81 is combined in a group of two, whereby a hidden zipper 80 as shown in Fig. 9 can be obtained. In the chain belt 81 described in Patent Document 1, in the key attachment portion 82c of the chain cloth 82, a plurality of upper fixing warp yarns 84a and lower fixing warp yarns 84b' are disposed on the upper teeth 83b of the fastener elements 83. And the outer surface of the lower leg portion 83c; and a plurality of fastening warp yarns 84c interlaced between the upper and lower leg portions 83b, 83c of the key teeth, and alternately spanning the upper leg portion 83b and the lower leg portion 83c Move in the longitude direction. Further, the total fineness of the fixing warp yarn 84b is larger than the fixing warp yarn 84b, which is closer to the meshing head portion 83a side of the fastener element than the fastening warp yarn 84c, which is larger than the total number of the warp yarns 84b. The warp yarn 84c is moved closer to the side of the feeding head portion 83a than the warp yarn 84c to the total fineness of the fixing warp yarn 84a. Thereby, the plurality of lower fixing warp yarns 84b which are moved closer to the engaging head portion 83a than the fastening warp yarn 84c can be finely arranged, so that the hidden zipper 80 is subjected to the left and right while the left and right sprocket teeth 83 are engaged. In the case of a strong lateral pulling force in the direction in which the chain cloths 82 are apart from each other, the position of the lower fixing warp yarns 84b can be prevented from shifting. Therefore, it is possible to effectively prevent a gap from being formed between the chain bending portions 82b of the left and right chain cloths 82, and to maintain the excellent concealability of the hidden zipper 80. PRIOR ART DOCUMENT PATENT DOCUMENT Patent Document 1 Japanese Patent Laid-Open Publication No. 2008-1 19076 SUMMARY OF THE INVENTION Problems to be Solved by the Invention In recent years, invisible zippers have been used not only in various clothing and shoes, but also in products such as shoes and shoes. It is used in various products such as a seat cover for a seat for a car and a seat cover for a sofa. Therefore, it is desirable that the invisible pull key be constructed to be usable under various environments and conditions. For example, when the concealed zipper is used in the seat cover of the seat portion for an automobile, the seat portion for the automobile is configured such that the cushion body having the shape of the shackle is covered by the hood P cover. In this case, the shape of the root insert, the shape of the t/vehicle seat, etc., sometimes the invisible zipper is bent in the direction of the back of the garment or the width of the chain in the direction of the chain cloth 154315.doc 201221078 It is placed on the seat cover. Further, depending on the design of the seat portion for an automobile, the concealed slide fastener may be integrally bent in the front and rear direction of the chain cloth or the width direction of the chain cloth to be attached to the seat cover. However, the chain cloth used in the zipper is woven or braided, and therefore, generally, the thickness direction is thin (the thickness is small), and in order to stably sew the zipper to the zipper-attached product using a sewing machine, the width is configured. Larger direction (larger width). Specifically, for example, in the conventional zipper or the concealed zipper, the thickness of the chain fabric is set to be less than or equal to 丨mm, and on the other hand, in order to allow the sewing machine to be smoothly sewn to various zippers in terms of the width of the chain fabric. The product is generally set to ensure that the width of the extension of the chain fabric is 12 mm or more. Here, the s stomach chain extension portion refers to a portion of the key cloth that protrudes from the joint portion of the key tooth to the outer side and the exposed portion when the key band is viewed from the key side, and the key cloth extension portion The larger the size in the width direction of the key cloth, the more the sewing machine presser foot can reliably press the chain cloth when sewing with the sewing machine, so that sewing can be performed stably. "In the conventional zipper as described above, it is formed that the chain cloth is thin in the thickness direction and wide in the width direction (especially, the 'key cloth extension portion can be ugly or more ugly". Therefore, even For example, when the invisible pull key is bent in the back direction of the key cloth and attached to the product of the pull-out key such as the seat cover, the key cloth itself can be easily bent in the thickness direction (back of the front and back). Therefore, the concealed zipper can be beautifully sewn to the zipper-attached product. When the zipper (four) cloth width direction (four) is attached to a product such as a seat cover or the like, for example, when the button is attached Cloth in the key cloth width 154315.doc 201221078 When bending in the χ direction, sometimes the chain cloth extending from the outer peripheral side of the concealed zipper (the projecting portion of the chain bent in a convex shape) may be partially tilted up or Moreover, sometimes, a chain extension portion that abuts on the inner peripheral side of the concealed zipper (a concavely bent chain cloth extension portion) generates a corrugated large crease groove. Therefore, for example, a chain When the cloth extension is greatly lifted, etc., when the sewing machine is slit, the machine dust is cut. The foot is pressed against the chain cloth unbrokenly, and when, for example, the protruding portion of the chain cloth has a corrugated large wrinkle, the chain cloth partially overlaps, so that it is difficult to utilize the left and right key cloths of the hidden zipper respectively. The sewing machine is used for sewing. Moreover, if the chain cloth after sewing also produces a large surface, a depression, or a wave or a pattern of enemies, there is a beauty (appearance quality) of the product that damages the zipper, and then, after sewing, When the chain of the invisible zipper is in the case of the larger _start, sag, or corrugated (4) as described above, if the slider slides along the row of the key teeth, there are also cases where the key cloth and the slip are The friction of the member causes the sliding resistance of the slider to increase, so that the sliding property of the slider is lowered. The present invention has been developed in the above-mentioned conventional problems, and a specific object thereof is to provide a chain belt and the same. A zipper which, when the zipper is bent in the width direction of the link fabric of the key cloth and sewn on the zipper-attached article, enables the chain cloth to be substantially flat and stably sewn, and on the key cloth after sewing Not easy to produce勉 、 下 下 。 。 。 。 。 。 。 。 。 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 a continuous sprocket of a side edge portion, wherein the sprocket includes an engaging head portion, an upper leg portion extending from the engaging head portion in a width direction of the chain cloth, and a connection connecting the adjacent sprocket teeth to each other The other side edge portion of the chain cloth extends beyond the end edge of the coupling portion side of the fastener element, and the main feature of the fastener chain is that the feeding material is from the fastener element The protruding length of the edge of the connecting portion side to the edge of the chain fabric on the other side edge side of the chain cloth is limited to less than 12 mm. In particular, in the present invention, The above-mentioned extension length is limited to 1 mm or less, and further 6 mm or less. In the chain belt of the invention, it is preferable that the chain cloth comprises a woven fabric, and that the cloth main body portion and the side edge side of the main body portion of the key cloth are on the other side of the main body portion of the key cloth The tension of the warp yarn in which the ear portion is disposed on the loading portion of the ear portion is higher than the tension of the warp yarn disposed outside the ear portion of the key cloth main body. In this case, there are four needles disposed in the ear portion. The above-mentioned chain of less than 6 yarns per month can better provide the following chain belt, which includes the silk & a, the main body of the material; the fold of the material, from the side of the body Extending in the width direction of the chain cloth, the fastener element is folded in the shape of the chain, and is further extended from the bent portion of the chain cloth, and is loaded with the above-mentioned fastener element; and, u 4 and 褒6 are further The engaging head is protruded from the upper portion of the upper portion of the upper portion and the sturdy shackle is attached to the sprocket mounting portion of the chain cloth. The key belt of the invention can provide the following key belt more preferably. , 154315.doc 201221078 The key teeth are woven into the above-mentioned sprocket Further, the chain belt of the invention may preferably further provide a key belt, wherein the key cloth includes a chain main body portion, and a side edge of one of the key cloth main body portions extends in a chain width direction and is mounted The fastener element of the fastener element is attached to the key tooth system such that the merging head portion protrudes from the key end side edge of the key attachment portion side to the outer side and is attached to the fastener element mounting portion of the key cloth. According to the present invention, it is possible to provide a pull key comprising the fastener tape constructed in the above-described manner. The effect of the invention is as follows: in the chain fabric of the chain belt of the present invention, the other side edge portion of the chain fabric has a joint portion side beyond the fastener element. a chain extending portion extending from the edge of the chain, the position of the edge of the link (4) of the link of the fastener to the edge of the key cloth at the edge of the other side of the chain cloth The length (i.e., the dimension of the mm chain width direction of the chain extending portion) is set to be less than 12 mm, preferably (7) or less, and more preferably 6 mm or less. By thus extending the length of the chain cloth Limited to less than 12, thus, when the chain is bent in the width direction of the chain cloth The size of the chain cloth extension portion of the chain cloth can be effectively reduced, or the size of the sag, or the size of the corrugated wrinkles. In particular, when the inventors change the above-mentioned extension length of the chain cloth On the one hand, after repeated experiments and discussions, it is preferred that the extension length is limited to 10 mm or less, and further to 6 mm or less. That is, if the 154315.doc 201221078 is extended (the chain extension) The size of the chain fabric in the width direction is ίο mm or less' to further reduce the size of the protruding or sag of the chain extending portion or the size of the corrugated wrinkles, thereby making it inconspicuous. When the extension length is 6 mm or less, even if the bending degree (curvature) is increased and the chain belt is bent in the width direction of the chain fabric, the chain cloth projecting portion of the chain cloth can be kept substantially flat. Therefore, even when the chain is bent in the width direction of the chain cloth and is sewn on the zipper-attached article, the sewing of the chain cloth can be kept substantially flat on the one hand, and the sewing can be performed on the one hand. 'The sewing of the chain can be carried out stably. Further, at this time, since the chain extending portion of the chain cloth is extremely thin in the width direction of the chain fabric, the manufacturing cost of the zipper is also reduced, and the weight of the zipper is reduced. Further, in the chain belt of the present invention, it is possible to prevent partial sag, sag, or corrugation of the chain cloth after being attached to the zipper-attached article, or even if local swaying occurs, The depressed or corrugated enemy phase is also small to be inconspicuous, and therefore, the appearance quality of the product with the zipper to which the key tape is sewn can be prevented from being lowered. Further, when the slider t is formed by the (four) key band, the slider and the key cloth are not wiped when the slider is slid, so that the slidability of the wire surface can be stabilized. In the chain belt of the present invention, the chain cloth Gustoga " 叩匕 3 fabric, and includes the main body of the chain cloth, and the chain teeth on the side edge side of the main body of the chain cloth. unit. Further, the tension of the warp yarns disposed on the other side edge portion of the main body portion of the chain fabric is higher than the tension of the warp yarns disposed at the two portions of the main body portion of the chain fabric = I54315.doc • 10·201221078. By this, it is possible to stably maintain the form of the bond fabric in which the width of the extension portion of the chain fabric is limited. Therefore, when the chain is bent, it is possible to reliably prevent the chain extending portion from being warped, sag, or corrugated, and the sewing of the chain becomes easier. Further, since the warp yarn disposed on the ear portion has a high tension, the knitted fabric structure of the main body portion of the chain fabric closer to the inner side can be stabilized, and the selection range of the weave structure used in the chain fabric can be expanded. At this time, four or more warp yarns of six or less are disposed in the ear portion of the chain cloth. Since the warp yarns disposed in the ear are four or more, the form of the key cloth can be more stably maintained. In particular, even when the tension of the weft yarn is strong, the weft yarn can be stably folded back in the ear portion, so that the form of the key cloth can be stably maintained. On the other hand, since the number of warp yarns disposed on the ear portion is six or less, the tension on the ear portion side of the key cloth can be prevented from being excessively strong, and the ear portion side of the chain cloth can be prevented from being largely shrunk on the key cloth. A so-called positive oblique pattern is produced. The present month can be effectively used as a so-called invisible pull key belt, the towel, the chain cloth includes a chain cloth main body portion, and a chain cloth bending portion extending from the edge of the main body portion of the chain cloth to the chain width direction And the word-shaped f-fold; and the chain tooth-an: pass it: the chain cloth f-fold part into-step extension and equipped with chain teeth, and, cloth:::: head from the key cloth (four) sudden -... The present invention can also be effectively used as a so-called ordinary chain belt, and the 1543I5.doc-il · 201221078 And a sprocket mounting portion extending from a side edge of one of the main body portions of the key cloth in a chain width direction and provided with a sprocket; and the sprocket "sends the engaging head from the side of the sprocket mounting portion side The end edge protrudes from the outer side and is mounted on the element mounting portion of the chain cloth. As the key belt for the pull key or the ordinary type key belt of the present invention, even if the chain cloth is bent in the width direction of the chain cloth, the chain cloth extension portion of the chain cloth can be prevented from being locally lifted, sunken, or Corrugated wrinkles, or even localized curling, sagging, or corrugated wrinkles are less noticeable. Further, in the slide fastener of the present invention having the fastener tape having the above-described configuration, the size of the fastener fabric extending portion of the key fabric in the chain width direction is set to be less than 12, preferably 10 mm or less, and particularly preferably 6 mm or less. Therefore, when the zipper of the present invention is sewn to the article of the pull-tab in a state in which the zipper is bent in the width direction of the chain fabric, the stitching of the fastener tape can be stably performed. Moreover, the zipper system sewn on the zipper-attached article can cause local curling, sagging, or corrugated wrinkles on the key cloth, or even localized lifting, sag, or corrugation. The wrinkles are also small to an inconspicuous degree, so that the appearance quality of the zipper-attached article can be prevented from deteriorating. Further, at this time, the slider and the chain cloth are not easily rubbed when the slider slides, so that the slidability of the excellent slider can be stably ensured. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail with reference to the embodiments. Further, the present invention is not limited to the embodiments described below, and various modifications can be made as long as it has substantially the same configuration as the present invention and has the same operational effects as 154315.doc •12·201221078. For example, the continuous sprocket described in the following embodiments is formed by forming a monofilament into a spiral shape, but the present invention is not limited thereto, and the continuous sprocket may be formed into a serration by forming the monofilament. Formed like a shape. [Embodiment 1] Fig. 1 is a rear view showing the back side of a concealed slide fastener in the first embodiment, and Fig. 2 is a cross-sectional view schematically showing a cross section of the concealed slide fastener in a manner to be understood. Further, Fig. 3 is a copy of a photograph of the back side of the concealed slide fastener. Fig. 4 is a copy of a photograph of the front side of the concealed pull key. In addition, in FIG. 2, in order to understand the state of the warp of the chain cloth, it is possible to express the cross section of the hidden zipper in the left-handed sprocket-toothed read state, and according to the drawing, The sprocket teeth are engaged, and the key cloth bending portions of the left and right key cloths are also separated from each other (4), but when the left and right sprocket teeth (4) are combined in the actual concealed zipper, as will be described later, The chain cloth bending portions of the chain cloth are closely connected to each other, and the chain teeth are not visible from the outer side. In the description of the head, "the front-rear direction means the length direction of the key fabric" and the sliding direction of the sliding member is the same direction. Further, the left-right direction refers to the chain width direction of the main body portion of the chain cloth of the chain cloth, and the chain cloth surface of the main body portion of the worm fabric is parallel, and is orthogonal to the longitudinal direction of the chain cloth, so-called up-and-down direction means and key cloth. The key cloth surface orthogonal to the key cloth table 2 == is 'for the key cloth, the side where the side of the fastener element is mounted == the direction of the opposite side is defined as the lower side. At this time, the lower side of the (4) zipper becomes the side of the invisible puller from the outside of the front 154315.doc -13- 201221078 side. The concealed slide fastener 10 of the first embodiment can be used, for example, on a zippered product such as a seat cover of an automobile seat. The concealed zipper 10 includes: a pair of left and right chain belts 20 on which the element rows 22 are formed, a stopper 11 fixed on the front end side of the element rows 22 fixed to the respective chain belts 20, and fixedly mounted on each of the chain belts 2〇 The rear end side of the element row 22 has a stopper 12 and a stealth zipper slider 13 that is slidable along the element row 22. The concealed slide fastener 10 is configured such that the slide fastener 13 is slid to the upper stopper 11 side, the left and right fastener element rows 22 are engaged to close the concealed slide fastener 10, and the slide member 13 is stopped downward by the stopper 12 side. Sliding causes the left and right element rows 22 to separate to open the invisible pull key 10. Further, in the concealed pull key 10, the upper stop U, the lower stop 12, and the concealed slide fastener 13 are configured in the same manner as the conventional user. In the first embodiment, each of the left and right chain belts 20 includes a woven chain fabric 21 and a spiral sprocket 23 mounted on the chain fabric 21, and is woven by spirally continuous sprocket 23 A chain row 22 is formed on the chain cloth 21. The chain cloth 21 includes a fastener element mounting portion 21a into which a fastener element 23 is woven, and a chain cloth bending portion 21b which extends from the side edge of the element tooth mounting portion 21a in the width direction of the chain fabric and which is bent in a U shape. And the chain main body portion 21c further extends from the chain cloth bending portion 2lb to be a portion that is sewn to the product of the zipper. The key teeth 23 are formed by forming a monofilament containing a thermoplastic resin such as polyamine or polyester into a spiral shape, and include: an engaging head portion 23 a; the upper and lower leg portions 23b, 23c' 23a is formed to extend in the width direction of the chain fabric; and the connecting portion 23d has the extending end portion of the upper leg portion 23b or the lower leg portion 23e 154315.doc.14-201221078 and the lower leg portion 23c of the fastener element 23 adjacent to the front and rear Or the upper leg portion 23b is connected. The key 23 is attached to the element attaching portion 21a of the chain fabric 21 such that the engaging head portion 23a protrudes outward from the chain bending portion 21b of the chain cloth 21. The chain fabric 2 in the first embodiment is woven by the yarn guide yoke (the carrier ba is reciprocating in the opening of the warp yarn to lie the ground weft yarn 24a) as shown in Fig. 2, the chain cloth The main body portion 21c and the chain bending portion 21b are woven fabrics of a ground weft yarn 24a including a double yarn and a plurality of ground warp yarns 24b, and the opposite side of the side of the chain fabric main body portion 21c in which the chain cloth bending portion 21b is formed. The end edge of the chain fabric is formed by inserting a knitting needle (not shown) and sequentially hooking the second weft yarn 24a to join the loop end of the stitch. The sprocket mounting portion 2丨a of the chain cloth 21 is disposed. There is a warp yarn 24c for fixing, which is moved in the longitudinal direction on the upper side of the leg portion 2 on the upper side of each of the fastener elements 23, and the warp yarn 24d of the lower fixing member is in the longitudinal direction of the lower side of the leg portion 23c below the respective fastener elements 23. The warp yarn 24e for fastening is moved in the longitudinal direction so as to be interlaced between the upper and lower leg portions 23b and 23c; the warp yarn 24f for positioning limits the position in the latitudinal direction of the upper and lower fixing warp yarns 24c, 24d; and the ground weft yarn 24a' is woven in the chain main body portion 2 ic and the chain cloth bent portion 21b in a weft insertion manner. Since the warp yarns 24c, 24d, 24e, and 24f and the ground weft yarns 24a constitute the fastener element attaching portion 21a, the fastener elements 23 can be firmly woven into the key tooth mounting portion 21a, so that the fastener elements 23 are mounted. Further, the 'the key cloth 21' can be used as the warp yarns 24b to 24f disposed in the element attaching portion 21a, the chain bending portion 21b, and the chain main body portion 21c, and can be used at 160 士 or more and 550 tex or less. The polyester processed yarn of the coarseness; as the single yarn of the ground weft yarn 24a, a polyester processed yarn having a thickness of 550 ounces or more and 11 ounces of 154315.doc -15 to 201221078 can be used. In the first embodiment, the various warp yarns 24b to 24f disposed in the element attaching portion 21a, the chain bending portion 21b, and the chain main body portion 21c have a thickness of 33 tex, and the single yarn of the ground weft yarn 24a has 700. Further, in the present invention, the thickness and material of the ground weft yarn and the various warp yarns are not particularly limited, and may be appropriately changed depending on the size of the key teeth or the use of the hidden slide fastener, etc. Thus, the present embodiment 1 In the invisible pull key 1 ,, the chain main body portion 21c of the key cloth 21 has an excess of the sprocket 23 The key sheet projecting portion 25 which protrudes from the end edge of the side of the knot portion 23d. That is, in the concealed zipper 1 of the first embodiment, in the left-right direction of the concealed slide fastener 10, when the joint portion of the fastener element 23 is When the position of the end edge of the 23d side is the reference position, the extension length X from the reference position to the end edge of the chain fabric main body portion 21c of the chain fabric 21 satisfies χ> The size of the cloth main body portion 21c in the chain width direction. In this case, when the concealed slide fastener 1 is viewed from the side of the fastener element 23, the link extension portion 25 is further exposed to the outside than the joint portion 23d of the fastener element 23. By extending the length X from the reference position to the edge of the chain cloth by X > 0 mm as described above, the chain extending portion 25 can be surely provided on the left and right chain cloths 21. Thus, when the sprocket 23 is woven into the sprocket 23 on the one hand, as described below, on the downstream side of the loom, the woven fabric can be woven on the downstream side of the looms by means of an upper roller (not shown). The chain spread portion 25 of 21 is stretched (transferred)', and the key cloth 21 is smoothly woven on the one hand. Therefore, the chain fabric 21 having the desired weave structure can be stably woven with high precision without the chain cloth 21 being rolled up or bent. Further, in the first embodiment, the size of the key distribution portion 25 of the chain fabric 21 in the chain width direction is limited to 6 mm or less. That is, the extension length X of the edge of the chain fabric from the above reference position to the side of the chain main body portion 21c of the chain fabric 21 satisfies 0 mm. <XS6 mm mode, the size of the key fabric main body portion 21c in the key width direction is set. At this time, when the thickness of the ground warp 24b disposed on the chain main body portion 21c is set to 33 0 tex as described above, and the chain extending portion 25 has a width dimension of, for example, 3 mm, The chain cloth projecting portion 25 is disposed with about 20 warp yarns 24b (in FIG. 2, in order to facilitate the expression of the hidden zipper 1 of the first embodiment), the root of the warp yarn 24b disposed at the chain cloth projecting portion 25 is reduced. The number represents the profile). Further, in the first embodiment, the number of warp yarns (especially the number of warp yarns disposed in the chain main body portion 21c other than the ear portion 26 to be described later) is reduced by the number of warp yarns disposed in the chain main body portion 21c of the chain fabric 21. And, the size of the chain fabric extending portion 25 of the chain cloth 21 in the width direction of the chain is restricted. By extending the length X (the dimension in the width direction of the chain fabric) of the chain extending portion 25 to 6 mm or less as described above, the hidden pull key 10 (chain tape 20) is made as shown, for example, in FIG. When the chain cloth 21 is bent in the width direction of the chain cloth, it is possible to effectively suppress the chain cloth projecting portion 25 from being locally lifted and sunk, or to effectively suppress the occurrence of corrugated wrinkles in the chain cloth projecting portion 25, thereby enabling the chain to be The cloth projecting portion 25 is kept flat. In this case, the shorter the extension length X is, the more easily the chain extension 2 is kept flat when the chain 2 is bent in the chain width direction, and the shorter the chain extension is. When the size of the chain cloth in the width direction of 25 is sewn to the zipper-attached article of the chain 20, it is possible that 154315.doc 201221078 is difficult to sew the chain tape 20. That is, in the concealed zipper 10 of the first embodiment, when, for example, the extension length X of the key cloth 21 from the reference position to the end edge of the chain cloth satisfies 〇mm, 'the extended length χ satisfies 4 mmcxsG. In the case of mm, even if the chain belt 20 is largely bent in the width direction of the chain cloth, the partial lifting of the chain cloth projecting portion 25 can be effectively suppressed, so that the key cloth projecting portion 25 can be stably maintained flat. shape. On the other hand, when, for example, the extension length X of the chain fabric 21 from the above reference position to the edge of the chain fabric satisfies 4 mm <X^6 mm, and the extension length X satisfies 0 mm When the chain belt 20 is sewn to the zipper-attached product by using a sewing machine, for example, the sewing machine presser foot of the sewing machine can more stably press the chain main body portion 21c of the chain fabric 21, as compared with the case of X$2 mm. The sewing of the chain belt 20 can be performed more smoothly. Moreover, when the chain cloth 21 reaches the extension length X from the above reference position to the edge of the chain fabric, for example, 2 mm is satisfied. <XS4 mm, when the chain belt 20 is largely bent in the chain width direction, the chain extending portion 25 can be kept flat 'and 'when the chain tape 2 is sewn to the attached zipper article At the time, the sewing of the chain tape 20 can be smoothly performed. In addition, in this embodiment! The size of the above-mentioned extension length X of the chain cloth 21 can be 〇 mm according to the use of the hidden zipper 1 or the like. <X^6 mm is arbitrarily selected within the range. Further, in the concealed slide fastener 10 of the first embodiment, the chain main body portion 21c of the chain fabric 21 has the ear portion 26' disposed on the opposite side of the fastener fabric side portion on the side of the fastener bent portion 21b, and is disposed on the ear. The tension of the ground warp yarn 24b of the portion 26 is higher than the tension of the ground warp yarn 24b disposed outside the ear portion 26 of the chain main body portion 21c. By 154315.doc •18· 201221078 By making the warp yarns disposed at the ear 26 have a higher tension as described above, for example, a copy of the photo of the invisible zipper 1图 in FIGS. 3 and 4 does not, and The ground warp yarn 24b disposed on the inner side of the ground warp yarn 24b is in a state of being strongly stretched. In this case, the number of the ground warp yarns 24b disposed in the ear portion 26 is preferably set to be four or less, and the ear portion 26 in the first embodiment is disposed with a high tension. Root warp. The warp yarns 26 of the chain cloth 21 are arranged with a warp yarn of a high tension at a number of four or more, whereby 'even when, for example, the tension applied to the ground weft 24a is high (strong), or the chain cloth is made When the chain 21 is bent in the width direction of the chain cloth, the edge of the ear portion 26 on the ear portion 26 side can be prevented from being twisted or bent, so that the form of the key cloth 21 can be stably maintained. Further, by arranging four or more high-strength warp yarns in the ear portion 26, the knitting structure of the key cloth 21 on the inner side of the ear portion 26 can be stabilized, and the knitting mesh can be prevented even when the hidden zipper 10 is washed or the like, for example. The position produces an offset. Further, the degree of freedom in selecting the weave structure used in the chain fabric 2 can be greatly expanded. On the other hand, by making the warp of the high tension disposed on the ear portion 26 of the chain cloth 21 six or less, the tension of the ear portion 26 of the chain cloth 21 in the longitudinal direction of the chain can be prevented from becoming excessively strong. Thereby, it is possible to prevent the chain belt 2 from being in the form of a so-called oblique cloth pattern, in which the chain cloth 21 is entirely bent, and the chain side edge portion on the ear portion 26 side of the chain cloth 21 is largely contracted. The side edge portion of the chain cloth has a concave shape. Next, a manufacturing method of the concealed slide fastener 1 in the first embodiment will be described. First, the chain belt 20 is manufactured. Specifically, the weaving machine is used to insert the weft yarn by reciprocating the yarn guide 154315.doc • 19·201221078 in the opening of the warp yarn arranged by a specific number, thereby knitting the desired weave structure A chain cloth 21 of a specific size in the width direction of the chain cloth. At this time, the tension of the warp yarn is adjusted so that the tension of the ground warp yarn 24b disposed on the ear portion 26 of the chain cloth 21 is increased, thereby woven into the chain fabric 21. Further, while the chain cloth 21 is woven in the above manner, the spiral sprocket 23 formed of the monofilament is woven into the fastener element of the chain cloth 21 with the engaging head portion 23a facing the inner side of the chain cloth 21. Mounting portion 21a. Then, after the key cloth 21 is woven, the portion of the chain cloth that becomes the key cloth bending portion 21b of the key cloth 21 is folded back in a U-shape so that the twisted head portion 23a of the fastener element 23 is self-shaped from the U-shaped chain. The bent portion 21b protrudes from the outside. Further, the key cloth 21 in the form of being bent as described above is subjected to a heat curing treatment. Thereby, the invisible fastener key chain 20 in which the twisting head portion 23a protrudes from the outer chain bending portion 21b is obtained. Further, by combining the obtained chain belts 20 in groups of two, and slidably attaching the sliders 13 to the element rows 22 of the chain belts 2, thereby producing the present The concealed zipper 1 of Example 1 is 〇. In the concealed slide fastener 10, when the left and right fastener elements 23 are brought into contact with each other, the fastener fabric bending portions 21b of the left and right key fabrics 21 can be brought into close contact with each other, thereby observing from the lower side (the side exposed to the outside) When the key pull 10 is invisible, the left and right fastener elements 23 can be hidden by the key cloth 21 (especially the key cloth hip folded portion 21b and the chain main body portion 21c). Further, compared with the conventional concealed zipper 1 〇 in which the extension length X (the dimension in the width direction of the chain fabric) of the chain cloth extension portion 25 of the chain cloth 21 is 6 mm or less, the above 154315.doc • 20· 201221078 The concealed zipper 10 of the first embodiment manufactured was set to be extremely small. Therefore, the manufacturing cost of the concealed zipper 10 can be reduced, and the weight can be reduced, and even when the concealed zipper 10 is bent in the chain width direction of the chain fabric 21 as shown in FIG. 5, the chain cloth can be effectively suppressed. The chain cloth projecting portion 25 of 21 is partially lifted or sunk, or the corrugated wrinkles are effectively suppressed from being generated by the key cloth projecting portion 25, whereby the chain main body portion 21c of the chain cloth 21 can be kept substantially flat. Therefore, when the concealed zipper 10 of the first embodiment is bent in the chain width direction of the chain cloth 21, and sewn to the article of the automobile seat cover or the like, the chain cloth is used. The key cloth main body portion 21c of 21 (in particular, the position of the chain cloth main body portion 21c on the side of the chain cloth bending portion 21b) and the zipper-attached product can reduce the direction of the back of the chain cloth generated on the chain cloth 21. The undulations 'or prevent the undulation of the front and back of the chain cloth, so that the chain main body portion 21 c of the key cloth 21 can be kept substantially flat on the one hand, and the hidden pull key 10 (or the key belt 20) can be stably inserted on the one hand. Sewing. Further, the concealed zipper 10 of the first embodiment is such that, after the chain cloth 21 is sewn in the direction of the width direction of the chain fabric, it is sewed on the product of the yoke, and the local sling can be prevented from being locally lifted on the chain fabric 21, Sinking, or corrugated wrinkles, or even a localized lift, sag, or corrugated wrinkles are less inconspicuous. Therefore, the zipper with the hidden zipper is prevented from being sewn. The appearance quality of the product is degraded. Moreover, when the slider 13 is slid to open and close the concealed zipper 1 , the chain 21 of the concealed zipper 10 does not cause local warping, sagging, or corrugated wrinkles, or a small partial lift. , sag, or corrugated 154315.doc •21 · 201221078 wrinkles, so the sliding resistance of the slider 13 is not increased by the friction of the slider 13 and the chain cloth 21, which prevents the sliding of the slider 丨3 Sexual decline. Further, in the concealed pull key 1 of the first embodiment, as described above, four or more of the lower end portions of the fastener fabric main body portion 21c on the side of the key fabric 21 are disposed. The warp yarns thereby form the ears 26. Thereby, the form of the chain fabric 21 (especially, the form of the chain main body portion 21c) can be stably maintained. Therefore, when the concealed zipper 10 is bent in the width direction of the chain fabric and sewn on the zipper-attached article, the chain extension portion 25 of the chain fabric 21 can be more reliably maintained in a substantially flat shape, thereby being stable and beautiful. Sewing the hidden zipper 1〇. Embodiment 2 Fig. 6 is a cross-sectional view showing a concealed pull key in the second embodiment. Further, in the concealed zipper 30 of the second embodiment, the sprocket 43 is not woven into the sprocket mounting portion while being woven into a chain cloth as shown in the above-described first embodiment, and 疋' is woven into a specific key cloth. After the chain cloth 41 of the width dimension, the fastener element 43 is sewn to the element attaching portion 41a of the chain cloth 41. Hereinafter, the concealed slide fastener 30 of the second embodiment will be described in detail. The concealed zipper 30 of the second embodiment includes a pair of left and right chain belts 4〇 having a pair of key teeth formed by the key teeth 43. The upper end of the chain is not shown, and is fixedly attached to the chain of each chain belt 40. The front end side of the tooth row; the lower end stop (not shown) is fixed to the rear end side of the element tooth row of each chain belt 40; and the slide fastener for stealth zipper (not shown) is slidable along the element tooth row Install it in the way. Each of the left and right chain belts 40 includes a woven chain cloth 41 and a spiral sprocket 43' sewn to the chain cloth 41 and is formed by sewing the fastener elements 43 on the key cloth 41. 154315.doc • 22 - 201221078 Chain tooth row. The chain cloth 41 includes a chain element mounting portion 4U that is sewn with a fastener element u; the chain cloth bending portion M1b extends from the side edge of the key tooth mounting portion 41a in the width direction of the key cloth and is bent in a U shape And a chain main body portion 4le which further extends from the key cloth loop portion 41b to become a portion sewn to the zipper-attached article. In this case, as the warp yarns disposed in the key attachment portion 4a, the chain bending portion 41b, and the chain main body portion 41C, a gathered yarn having a thickness of 330 ounces can be used as the weft yarn. For single yarns, polyester processed yarns having a thickness of 7 ounces can be used. The key teeth 43 include: a ringing head portion 43a; upper and lower leg portions 43b and 43c formed so as to extend from the meshing head portion 43a in the chain width direction; and a joint 4 43d which will have the upper leg portion 43b or the lower leg portion 43c The extended end portion is coupled to the sprocket lower leg portion 43c or the upper leg portion 43b adjacent to the front and rear. In addition, in the state in which the core wire 48 is inserted between the upper and lower leg portions 43b and 43c, the fastener element 43 protrudes from the chain bending portion 41 of the chain cloth 41 to the outside. The sprocket mounting portion 41a of the chain cloth 41 is sewn by the double-thread lock seam of the sewed yarn 47. In the concealed zipper 30 of the second embodiment, the chain cloth 41 includes a chain extending portion 45 which is closer to the joint portion of the sprocket 43 when the hidden zipper 3 is viewed from the sprocket 43 side. 43d extends out to the outside and is exposed. That is, in the case of the concealed zipper 30 of the second embodiment, when the position of the end edge of the sprocket 43 on the side of the connecting portion 43d is taken as the reference position in the left-right direction of the concealed zipper 3〇, The extension length χ of the end position of the chain fabric from the reference position to the side of the chain main body portion 41c of the chain cloth 41 satisfies the setting of the χ 〇 〇 〇 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 154 size. By extending the extension length X from the above reference position to the end edge of the chain fabric to X > 0 mm as described above, the chain extension portion 45 can be provided on the left and right chain fabrics 41. In the manufacture of the concealed zipper 30, for example, when the chain cloth 41 is subjected to heat curing treatment, dyeing treatment, or the like, and conveyed in a chain state, the upper and lower rollers can surely sandwich the chain extension of the chain fabric 41. The outlet 45 is capable of stably performing a specific process on the key bar' while the key pad 41 is not rolled up or folded. Further, in the concealed zipper 3 of the second embodiment, the size of the chain extending portion 45 of the chain fabric 41 in the width direction of the chain is limited to 6 mrn or less. That is, the extension length X of the edge of the chain fabric from the above reference position to the side of the chain main body portion 41c of the chain fabric 41 satisfies 0 mm. <XS6 mm mode, the size of the key fabric main body portion 41c in the chain width direction is set. Further, in the concealed slide fastener 3 of the second embodiment, the chain main body portion 41c of the chain fabric 41 has the ear portion 46 disposed on the side edge portion of the chain cloth on the side opposite to the side of the chain bending portion 4, and is disposed in the ear portion 46. The tension of the warp yarn of the ear portion 46 is higher than the tension of the warp yarn disposed outside the ear portion 46 of the chain main body portion 41c. At this time, six warp yarns are arranged at a high tension on the ear portion 46'. Thereby, the form of the chain cloth 41 can be stabilized without causing a positive oblique pattern on the key cloth 41. In the concealed zipper 3 of the second embodiment having the above configuration, the extension length X of the chain extension portion 45 of the chain fabric 41 is limited to 6 mm or less, and on the side of the chain main body portion 41c of the chain fabric 41. The side edge portion of the chain fabric is formed with an ear portion 46 in which a warp yarn having a high tension is disposed. Therefore, the invisible pull key 30 in the second embodiment can obtain the same effect as the concealed slide fastener 3 in the above embodiment i. 154315.doc • 24· 201221078 Embodiment 3 FIG. 7 is the zipper in the third embodiment. Front view, Figure 8 is a cross-sectional view of the zipper. The conventional zipper 5 本 in the third embodiment (hereinafter, the zipper is simply referred to as a "zipper") includes a pair of left and right chain belts 60 which are provided with a chain row 62 · 'upper stop 51 ' Fixedly mounted on the front end side of the element row 62 of each chain belt 60; lower stop 52 fixedly mounted on the rear end side of the element row 62 of each chain belt 6; and a sliding member 53 for following the chain The tooth row 62 is mounted in a sliding manner. At this time, the upper stop 51, the lower stopper 52, and the slider 53 are configured in the same manner as the conventional user. In the third embodiment, each of the left and right chain belts 6A includes a woven chain cloth 61 and a spiral sprocket 63 sewn to the chain cloth 61, and the sprocket 63 is sewn on the chain cloth 61. A chain row 62 is formed. The key cloth 61 includes a key attachment portion 61a to which a fastener element 63 is sewn, and a key fabric main portion 61b' which extends from the side edge of the fastener attachment portion 61a in the chain width direction and is attached to the attached zipper. In this case, as the plurality of warp yarns disposed on the element attaching portion 61a and the chain main body portion 6ib, a polyester processed yarn having a thickness of 330 tex can be used; and as a single yarn of the weft yarn, "having 700" can be used. Polyester processed yarn of the thickness of Texa. The sprocket 63 includes: an engaging head portion 63a; upper and lower leg portions 63b, 63c formed to extend from the meshing head portion 63a in the chain width direction; and a joint portion 63d which will have the upper leg portion 63b or the lower leg portion The extended end portion of the portion 63c is coupled to the sprocket lower leg portion 63c or the upper leg portion 63b adjacent to the front and rear. Further, the sprocket 63 is provided with a core 154315.doc -25-201221078 line 68 inserted between the upper and lower leg portions 63b and 63c. The side edge of the chain cloth side of the 61a side protrudes from the outer side, and is sewn to the element attaching portion 61& by the double-line lock stitching of the sewing yarn 67. In the pull button 5 of the third embodiment, the chain cloth 61 has the key cloth projecting portion 65'. The chain cloth projecting portion 65 is a key tooth when the zipper 50 is viewed from the side of the sprocket 63 (front side). The joint portion 63d of 63 is extended to the outside to be exposed. In the zipper 50 of the third embodiment, when the position of the end edge of the connecting portion 63d side of the key 63 is used as the reference position in the left-right direction of the zipper 50, 'from the reference position to the chain The extension length X of the end edge of the chain fabric on the side of the chain fabric main body portion 611) of the cloth 61 satisfies the size of the key fabric main body portion 6ib in the width direction of the key cloth. By extending the length X from the reference position to the edge of the chain cloth by X > 0 mm as described above, the chain extending portion 65 can be provided on the left and right chain cloth 61. In the manufacture of the zipper 50, for example, when the sewing process of sewing the fastener element 63 to the fastener fabric 61 or the dyeing process of the key cloth 61 is performed, the upper and lower rollers can surely sandwich the chain extension of the chain fabric 61. The outlet portion 65, and the treatment of the chain is stably performed ' without the key cloth 61 being rolled up and bent. Further, in the zipper 50 of the third embodiment, the size of the chain extending portion 65 of the chain fabric 61 in the chain width direction is limited to 6 mm or less. That is, the extension length X of the end edge of the chain fabric from the above reference position to the side of the chain main body portion 61b of the chain fabric 61 satisfies 0 mm. <XS6 mm mode, the size of the chain main body portion 6ib in the chain width direction is set. Further, in the zipper 50 of the third embodiment, the chain fabric 61 has the ear portion 66 disposed on the side edge portion of the chain fabric on the side of the key fabric main body portion 61b, and is disposed on the warp of the ear portion 66 154315.doc •26·201221078. The tension is higher than the tension of the warp yarns taken outside the ear portion 66 of the chain main body portion 6ib. At this time, in the ear portion 66, six warp yarns are arranged with a high tension. Thereby, the form of the chain cloth 61 can be stabilized, and the oblique cloth pattern is not generated on the chain cloth 61. In the zipper 50 of the third embodiment having the above configuration, since the extension length X of the key distribution portion 65 of the chain cloth 61 is limited to 6 mm or less, even when the pull key 50 is made in the width direction of the key cloth In the case of bending, it is also possible to effectively suppress the chain spread portion 65 of the chain fabric 61 from being locally lifted and sunk, or to effectively suppress the occurrence of corrugated wrinkles, so that the chain cloth 61 can be kept substantially flat. Therefore, when the zipper 50 of the third embodiment is bent in the chain width direction of the key cloth 61 and sewn to the zipper-attached article such as the seat cover for an automobile, the chain cloth 61 can be used. The chain main body portion 616 is stably sewn with the zipper-attached product. Further, in the zipper 50 of the third embodiment, after being sewn on the product having the pull-tab in a state in which the chain cloth 61 is bent in the width direction of the chain, the key cloth 61 can be prevented from being locally lifted. Sinking, or corrugated wrinkles, or 'even if localized lifting, sagging, or corrugated wrinkles are less inconspicuous. Therefore, it is possible to prevent the appearance quality of the product having the zip fastener to which the pull key 5 缝 is sewn from being lowered, and the slidability of the slider 53 can be prevented from being lowered. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows an embodiment of the present invention! The back side of the back side of the concealed zipper in the middle. I54315.doc -27· 201221078 FIG. 2 is a cross-sectional view schematically showing a cross section of the concealed slide fastener. Figure 3 is a copy of the photo of the back side of the concealed zipper. Figure 4 is a copy of the photo of the front side of the concealed zipper. Fig. 5 is a rear elevational view showing a state in which the concealed slide fastener is bent in the width direction of the chain fabric. Figure 6 is a cross-sectional view showing a concealed slide fastener in Embodiment 2 of the present invention. Figure 7 is a front elevational view of the slide fastener in the third embodiment of the present invention. Figure 8 is a cross-sectional view of the pull key. Figure 9 is a cross-sectional view showing a conventional invisible pull key. [Main component symbol description] 10 ' 30 ' 80 Concealed zipper 11 Upper stop 12 Lower stop 13 Concealed zipper slider 20 ' 40 ' 60 ' 81 Chain belt 21, 41, 61 > 82 key cloth 21a ' 41a ' 61a' 82c sprocket mounting portions 21b, 41b' 82b key cloth bending portions 21c' 41c, 61b, 82a key cloth main body portion 22' 62 key tooth rows 23, 43, 63' 83 key teeth 23a, 43a, 63a ' 83a Coupling heads 23b, 43b > 63b > 83b upper leg portions 23c, 43c, 63c, 83c lower leg portions 154315.doc -28 - 201221078 23d, 43d '63d, 83d joint portion 24a weft yarn 24b warp yarn 24c ' 84a Fixing warp yarns 24d, 84b fixing warp yarns 24e, 84c fastening warp yarns 24f positioning warp yarns 25, 45, 65 chain cloth projecting portions 26, 46' 66 ears 47, 67 sewing yarns 48, 68 core wire 50 pull key 51 Upper stop 52 Lower stop 53 Slider X Extension length 154315.doc ·29·