(1) (1)200400288 玖、發明說明 【發明所屬之技術領域】 本發明係有關聚胺基甲酸乙酯彈性纖維。更詳細者係 有關適用於紙尿褲橡膠部之聚胺基甲酸乙酯彈性纖維。M 有關具有與不織布相互黏著性、卷絲體之解除性、與導，線 圈變更導向之低磨擦性、尿布美觀、穿著時具舒適性之聚 胺基甲酸乙酯彈性纖維。 【先前技術】 紙尿褲之腰部、腿部亦即橡膠部者，於重疊不織布間 進行層壓塑料後所使用之聚胺基甲酸乙酯彈性纖維先行中 ，爲減少紙尿褲之製造步驟，亦即，聚胺基甲酸乙酯彈性 纖維被層壓塑料爲止之步驟的導線圈變更導向之磨擦性， 於聚胺基甲酸乙酯彈性纖維中被添加各種無機金屬化合物 者。 惟，此等無機金屬化合物有損及聚胺基甲酸乙酯彈性 纖維之透明感。近年來，以印上小動物、有花樣者於紙尿 布背面薄片的紙尿褲被使用之。此種紙尿褲於設計上其聚 胺基甲酸乙酯彈性纖維之重疊部份出現其聚胺基甲酸乙酯 無透明感與損及設計外觀之問題。因此，紙尿褲用途上儘 量不添加此等無機金屬化合物之聚胺基甲酸乙酯者宜。惟 ，無機金屬化合物添加量少之聚胺基甲酸乙酯彈性纖維增 加導向磨擦性，於製造步驟中之導線圈向極易出現斷線， 極不易適用於紙尿褲之用途。 _4一 (2) (2)200400288 又，與不織布黏著性不良時，穿著時橡膠部鬆弛、穿 著時密合不良之問題產生，而被提出提昇黏著性。於特公 平5 - 5 0 4 2 9號公報中被揭示附著2重量％以下之處理劑， 或未附著處理劑之解開性與黏著性均良好之彈性卷絲體者 。特開2000-3 2 7224號公報中被揭示附與3.0〜10.0重量％ 由聚丙二醇系聚醇所成處理劑之解開性與黏著性均良好之 彈性卷絲體者。特開平1 0 - 1 5 2 2 6 4號公報中被揭示附與具 特定表面張力油劑之解開性與黏著性均良好之彈性卷絲體 者。 另外，爲製造兼具良好延伸性與恢復性之紙尿褲被揭 示於特開2 0 0 1 - 2 9 3 8 6號公報中之附與4倍以上延伸性於彈 性絲，再收縮復元後，供於紙尿布製造步驟之製造紙尿褲 之方法。惟，此法於卷取彈性纖維時，或卷取後，回卷時 務必經由延伸-收縮復元之處理步驟，因此，造成步驟煩 雜、易產生斷線等失誤。 如此，於先行技術中無法同時滿足紙尿褲之美觀、穿 著舒適性、解開性、黏著性等步驟性能兼具之彈性纖維。 【發明內容】 因此，本發明目的爲解決該問題，提供一種製造紙尿 褲時，無需多餘步驟，可取得與不織布黏著性良好，由卷 取卷裝之良好解開性’絲的走向減少斷線之卓越的步驟性 能，穿著時舒適感佳’具透明感理想外觀之用於紙尿褲橡 髎部的聚胺基甲酸乙酯彈性纖維者。 (3) (3)200400288 又’本發明其他目的係提供一種容易穿著、脫取、行 動自如’且，舒適者，同時，對於成長快速之小孩，仍可 依其體型變化製造出伸縮自如之紙尿褲有效適用於紙尿褲 用途的聚胺基甲酸乙酯彈性纖維者。 亦即，本申請係提供以下之發明者。 (1 ) 含有聚胺基甲酸乙酯聚合物之聚胺基甲酸乙 酯彈性纖維，附著含有 (a) 數平均分子量400〜2000，且，熔點爲20 t：以 下之均聚或共聚之聚伸烷醚二醇， (b) 末端具OH基，碳數爲8〜25之高級醇，以及， (c) 25 °C之動黏度爲5〜50cs之鑛油、二甲基聚矽 氧烷、或鑛物油與二甲基聚矽氧烷混合物之處理劑的上記 聚胺基甲酸乙酯彈性纖維。 (2 ) 聚胺基甲酸乙酯聚合物由 (i ) 有機二異氰酸酯化合物， (ii ) 1種以上碳數1〜8之直鏈狀或支鏈狀伸烷基及 四伸甲基呈嵌段狀或無規狀之醚鍵者’數平均分子量爲 5 0 0~5 0 00之共聚聚伸烷基醚二醇，以及 (iii ) 由反應異氰酸酯基之含活性氫化合物取得之 聚胺基甲酸乙醋聚合物之該（1 )項所載聚胺基甲酸乙酯 彈性纖維。 (3 ) 處理劑係由成份 U )爲15〜95重量％，成份 (b)爲2〜30重量％，以及成份（c )爲3〜80重量％之組 成所成該（1 )項或（2 )項之聚胺基甲酸乙酯彈性纖維。 一 6” (4) (4)200400288 (4 ) 針對1 00重量份之聚胺基甲酸乙酯彈性纖維 ，附著超出2重量份量處理劑之該 （1 )〜（3 )項中任一 項之聚胺基甲酸乙酯彈性纖維。 (5) 動磨擦係數爲1.6以下之該 （1)〜（4)項中任 一項之聚胺基甲酸乙酯彈性纖維。 (6 ) 更含有無機金屬化合物，該無機金屬化合物 含量爲100重量份聚胺基甲酸乙酯彈性纖維之1.0重量 份以下之該（1 )〜（5 )項中任一項聚胺基甲酸乙酯彈性 纖維。 (7 )未含無機金屬化合物之該（1 )〜（5 )項中任一 項之聚胺基甲酸乙酯彈性纖維。 (8 ) 成份（a )之均聚或共聚之聚伸烷醚二醇爲聚 丙二醇者之（1 )〜（7 )項中任一項聚胺基甲酸乙醋彈性 纖維。 (9 ) 該（1 )〜（8 )項中任一項聚胺基甲酸乙醋彈 性纖維係卷取後之聚胺基甲酸乙酯彈性纖維卷絲體。 (10) 該（1 )〜（8 )項中任一項聚胺基甲酸乙酯彈 性纖維之使用所成的紙尿褲。 (11 ) 製造含有附著下記成份（a )爲15〜95重量 %，成份 （b )爲2〜30重量％，及成份（c )爲3〜80重 量°/。之組成所成之處理劑於含有聚胺基甲酸乙酯聚合物之 聚胺基甲酸乙酯彈性纖維中之步驟的聚胺基甲酸乙酯彈性 纖維製造方法。 (a ) 數平均分子量4 00〜200 0，且，熔點爲20 °C以 (5) (5)200400288 下之均聚或共聚之聚伸烷醚二醇； (b) 末端具OH基，碳數爲8〜25之高級醇； (c ) 2 5 °C之動黏度爲5〜50c s之鑛物油、二甲基聚 矽氧烷、或鑛物油與二甲基聚矽氧烷混合物。 [發明實施之最佳形態] 以下，針對本發明進行詳細說明。 本發明者發現，於紙尿褲橡膠部使用附著特定處理劑 之聚胺基甲酸乙酯彈性纖維後，其步驟性能良好、穿著時 具舒適之穿脫性，同時具良好穿著感，尺寸適用性亦極佳 者。 本發明聚胺基甲酸乙酯彈性纖維之聚胺基甲酸乙酯聚 合物使高分子二醇，有機二異氰酸酯化合物，及含氟化氫 之化合物反應後所取得之聚胺基甲酸乙酯聚合物爲理想使 用者。 做爲高分子二醇者可使用公知之聚醚二醇、聚酯二醇 、聚碳酸酯等，又以聚醚二醇爲較佳者。 做爲聚醚二醇例者以數平均分子量5 00〜5 000之聚伸太完 醚二醇者宜，如：聚四亞甲醚二醇（PTMG )、四伸甲基 及與其他伸烷基相互共聚之聚伸烷醚二醇等例。由聚伸院 醚二醇所成之聚胺基甲酸乙酯聚合物具有良好之伸縮特性 、耐水解性。其中又以1種以上不同於四伸甲基、及碳數 1〜8直鏈狀或支鏈狀之該四伸甲基的伸院基呈嵌段狀或 無規狀之醚鍵共聚之聚伸烷醚二醇爲最佳者° —8— (6) 200400288 做爲以四伸甲基爲A，以之外的伸烷基爲B之共聚伸 烷醚二醇結構之例者如··具有分別各1個鍵之H 0 - A - 0 - B _ OH，具有A之嵌段及B之嵌段之HO-A-O-A-O-A-O-B-O-B-O-B-OH，A及 B呈規則配列之 HO-A-O-B-O-A-O-B-O-A-0- B - Ο Η等，此等之外，A，B之配置爲無規結構等例。 相較於藉由含2種以上聚伸烷醚二醇之伸烷基後’使 用1種伸烷基所成之聚伸烷醚二醇時’其延伸時較不易結 晶化，因此，可取得柔軟性、低滯後損失特性及低殘留變 形特性良好之聚胺基甲酸乙酯彈性纖維。此用於紙尿褲橡 膠部可取得舒適之穿脫性與穿著感、及尺寸伸縮性強之紙 尿褲。 本發明所使用之共聚聚伸烷醚二醇由取得聚胺基甲酸 乙酯彈性纖維之耐水性、耐光性及耐磨損性觀點視之’以 伸烷基中之1種爲四伸甲基，另以1種以上爲四亞基以外之 碳數1〜8直鏈狀或支鏈狀伸烷基者爲宜。其中又以四伸 甲基與新戊烯基及/或2-甲基丁烯之共聚聚伸烷醚二醇’ 亦即，共聚聚（四伸甲基·新戊烯）醚二醇、共聚聚（四 伸甲基· 2 -甲基丁烯）醚二醇爲較佳者。由彈性機能之觀 點視之，又以共聚聚（四伸甲基·新戊烯）醚二醇爲最佳 者。 四伸甲基與其他伸烷基之共聚聚伸烷醚二醇中四伸甲 基以外之伸烷基組合爲1 〇〇莫耳％含於該二醇之總伸烷基 組合之3 莫耳％以上8 5 莫耳％以下者宜，4 莫耳％以上 70莫耳％以下爲更佳。當四伸甲基以外之伸烷基組合不 一 9一 (7) 200400288 足3旲耳％以下時，則彈性機能之改善效果變小，反之， 超出85莫耳％則將降低延伸度與強度。 做爲有機二異氰酸酯者如··脂肪族、脂環族及芳香族 之一異氛酸醋中，於反應條件下爲溶解或液狀者全部均可 適用之。如：伸甲基-雙（4-苯基異氰酸酯）、伸甲基-雙 (3-甲基-4-苯基異氰酸酯）、2，4-甲苯二異氰酸酯、2， 6 -甲苯二異氰酸酯、間-及對-二甲苯二異氰酸酯、α ，α ，α’，α’_四甲基-二甲苯二異氰酸酯、間-及對-苯二異 氰酸酯，4，4’-二甲基-1，3 -二甲苯二異氰酸酯、1-烷基 苯-2，4-及2，6-二異氰酸酯、3- (α-異氰酸酯乙基）苯 基異氰酸酯、2，6 -二乙基苯-1，4 -二異氰酸酯、二苯基-二甲基甲烷-4，4-二異氰酸酯、二苯醚-4，4’-二異氰酸酯 、萘烯-雙 （4-環己基異氰酸酯）、：I，3·及1，4-環己烯二 異氰酸酯、三伸甲基二異氰酸酯、四伸甲基二異氰酸酯、 五伸甲基二異氰酸酯、六伸甲基二異氰酸酯、異氟爾酮二 異氰酸酯等例。較佳者爲伸甲基·雙 （4-苯基異氰酸酯）。 做爲含有鏈延長劑之活化氫原子化合物者爲含有具聯 胺、聚聯胺、碳原子數2〜10之直鏈或支鏈之脂肪族、脂環 族或芳香族之具活化氫胺基化合物等，如：乙烯二胺、1 ，2-芮烯二胺，特開平5 - 1 5 5 84 1號公報所載之具脲基之二 胺類等二胺、羥胺、水、或低分子量二醇，如：乙二醇、 1，2 -丙二醇、1，3 -丙二醇、2，2 -二甲基-1，3 -丙二醇、 1，4-丁二醇、1，3-丁二醇、六伸甲基二醇、二乙二醇、 1，10-癸二醇、1，3-二羥甲基環己烷、1，4-二羥甲基環 一 10 - (8) (8)200400288 己烷等均可使用之。較佳者爲乙烯二胺及1，2 -丙烯二胺 〇 做爲具有末端終止劑單官能性活化氫原子之化合物者 可使用如：二乙胺類之二烷胺等。 此等鏈延長劑，末端終止劑可單獨或混合2種以上使 用之。 本發明中藉由均聚或共聚聚伸烷醚二醇、二異氰酸酯 化合物及活性氫含有化合物製造聚胺基甲酸乙酯聚合物時 ，可利用公知之聚胺基甲酸乙酯聚合反應之技術者。如： 以1 : 1.2〜2.2，較佳爲1 : 1.3〜1.8之莫耳比使聚伸烷醚二 醇與有機二異氰酸酯進行反應後，合成具有異氰酸酯於兩 末端之胺基甲酸乙酯預聚體，再藉由二胺化合物或二醇化 合物進行此胺基甲酸乙酯預聚體之鏈延長反應後可取得聚 胺基甲酸乙酯聚合物。 關於聚胺基甲酸乙酯化反應之操作於胺基甲酸乙酯預 聚體合成時，此胺基甲酸乙酯預聚體與含活化氫化合物相 互反應時亦可使用無溶媒、或二甲基甲驢胺，二甲亞碩、 二甲基乙醯胺等溶劑。 本發明所使用各種化合物之化學量論比例其聚伸焼醚 二醇之氫氧基與二胺化合物等活化氫之總和爲異氰酸酯化 合物之異氰酸酯基的1.00〜1.07當量者宜。 本發明聚胺基甲酸乙酯彈性纖維因附與如後述具特定 潤滑性能之處理劑，即使未含無機金屬化合物、或含微量 均可取得充份之磨擦性，可確保纖維之透明感。做爲本發 一 11 一 (9) (9)200400288 曰月聚胺基甲酸乙酯彈性纖維所使用之無機金屬化合物者如 ： 選自Ti、Mg、Al、Zn、Ca群之金屬氧化物、氫氧化物 '碳酸鹽、硝酸鹽、硫酸鹽及此等單體或無機金屬複合鹽 等例。理想之無機金屬化合物如：氧化鈦、氧化鋅、氧 化鎂、水滑石、CaMg3(C03)4等者。由提昇磨擦性觀點視 之’特別以氧化鈦爲最佳。本發明聚胺基甲酸乙酯彈性纖 '維中含無機金屬化合物量爲1 00重量份聚胺基甲酸乙酯 固形份之1.0 重量份以下者宜，未含者亦可。較佳者爲 〇 · 5重量份以下，特別以〇 . 3重量份以下爲最佳。若添加 ft爲1 . 0重量份以上則將降低聚胺基甲酸乙酯彈性纖維之 透明感’只要微量的添加，藉由摩擦步驟可改善斷線。 聚胺基甲酸乙酯彈性纖維中做爲上述以外之添加劑者 亦可倂用公知之有機或無機化合物，如：熱安定劑、抗 氧化劑、紫外線吸收劑、抗黃變劑、抗熱變色劑、抗黏著 劑、顏料、靜電防止劑、防黴劑、著色劑、塡充劑等進行 添加之。 聚胺基甲酸乙酯彈性纖維針對聚胺基甲酸乙酯聚合物 (或含添加物之聚胺基甲酸乙酯聚合物組成物），以常用 方法進行乾式紡紗、熔融紡紗或濕式紡紗後可取得之。 聚胺基甲酸乙酯彈性纖維之單絲數未受限，可爲單絲 、或複合絲均可，而，由黏著性觀點視之，以單絲纖度爲 5〜1 5 d t (d e c i t e X )之複合絲者宜。聚胺基甲酸乙酯彈性纖 維總纖度以1 80〜2 2 0 0 dt者宜。 所取得聚胺基甲酸乙酯彈性纖維於紙管卷裝卷取前後 一 12 - (10) (10)200400288 ’藉由注油輪、注油導向、注油噴霧等，公知之方法附與 處理劑。 本發明者發現’以下詳細說明之特定組成所成處理劑 藉由附著聚胺基甲酸乙酯彈性纖維後，不僅可改善黏著性 、解開性、斷線性等加工性能，更附與改善絲的彈性性能 之特別效果。特別是藉由附著使用結晶性低之共聚聚伸烷 醚二醇之聚胺基甲酸乙酯彈性纖維後，其聚胺基甲酸乙酯 彈性纖維於延伸時不易結晶化，因此，延伸時以低應力進 行延伸’收縮時顯示高度復元性，具理想之低滯後損失特 性及低殘留變形特性者。亦即可取得具柔軟彈性性能之聚 胺基甲酸乙酯彈性纖維。此用於紙尿褲橡膠部時，可取得 舒適之穿脫與穿著感、及尺寸伸縮大之紙尿褲者。 以下’針對含於處理劑之各成份進行詳細說明。 (a)成份之均聚或共聚聚伸烷醚二醇化合物係滲透 於以共聚二醇做爲原料之本發明聚胺基甲酸乙酯聚合物之 柔軟部份之非晶份後，被推斷具有潤滑劑之效果者，藉此 彈性纖維延伸時，出現更柔軟之彈性特性。（a)成份因 不易殘留於滲透絲之絲表層部，因此，降低導線圈變更導 向抵抗效果少。（a)成份爲數平均分子量400〜2000，熔 點爲2 0 t以下者，使環氧乙烷；環氧丙烷等烯化氧進行 聚合或共聚、或使低分子聚伸烷基二醇利用環氧乙烷、環 氧丙烷更進行共聚後取得。其中又以環氧丙烷單獨聚合物 ，亦即聚丙二醇 （PPG)爲較佳。均聚或共聚聚伸烷醚二 醇化合物之數平均分子量不足4〇〇時，隨著時間易由絲飛 (11) 200400288 0夂之。又’數平均分子量超出2 〇 〇 〇則解開性變差。且，溶 點超出20 °C則冬天時解開性變差，其結果紙尿褲製造過 程中經常出現斷線。 附著（a ) 成份所成處理劑於聚胺基甲酸乙酯彈性 纖維時其解開性不良，因此，於（a ) 成份之外，由解 開丨生點視之務必以 （c ) 成份之鑛物油、二甲基聚石夕 氧烷、或鑛物油與二甲基聚矽氧烷混合物做爲處理劑含有 之。 做爲（C ) 成份之二甲基聚矽氧烷者如：1 ) 由二 甲基矽氧烷單位所成之聚二甲基矽氧烷，2 ) 二甲基矽 氧院單位與含碳數2〜4院基之院基砂氧院單位所成之聚 二院基矽氧烷類，3 ) 二甲基矽氧烷單位與甲基苯基矽 氧烷單位所成之聚矽氧烷類等例。較佳者爲聚二甲基矽氧 烷 （DMS )者。 (c ) 成份中鑛物油及二甲基聚砂氧院之2 5 °C動黏 度利用恆溫水槽中cannon fen ske’s黏度管以定法進行測定 時爲5〜5 0 c s者。 更爲使（a) 成份與（c) 成份可均勻附著於聚胺 基甲酸乙酯彈性纖維提高互溶性’務必於（b ) 成份末 端以具有〇 Η基，碳數爲8〜2 5之商級醇做爲處理劑含有之 。做爲此（b )成份之例者以異硬脂醇（ISA ) ’異胺醇 等高級脂肪族醇者宜。 本發明聚胺基甲酸乙醋彈性纖維中，耢由附者此等^ 成份後’首度取得同時滿足穿著舒適性與步驟性之紙尿裤 (12) (12)200400288 用聚胺基甲酸乙酯彈性纖維。取得本發明聚胺基甲酸乙醋 彈性識維時’所含分別之成份處理劑亦可附著於各個中， 惟’以附著同時含有該3成份之處理劑者爲最理想者。做 爲此處理劑者，其處理劑中之（a ) 、 （ b ) 、 （ c ) 3成 份之比例以 （a) 成份爲15〜95重量％， (b ) 成份 2〜30重量％ ’ (C ) 成份爲3〜80重量。/〇者宜。當（a) 成份不足1 5重量％時，無法取得柔軟之彈性特性，反之 超出95重量％時，則將降低彈性纖維之解開性。當（b ) 成份不足2重量％時，則無法確保處理劑之互溶性。反之 ，超出3 0重量％則將降低處理劑之安定性。（c ) 成份 不足3重量％時，則解開性變差，超出8 0重量％則降低 (a ) 成份比率而無法取得本發明效果。理想者以 （a )成 份爲20〜95 重量％ ’ （b) 成份爲2〜20 重量％ ’ (c ) 成份爲3〜7 0重量％者。 由聚胺.基甲酸乙酯彈性纖維之黏著性、解開性、；步驟 中之斷線性等，步驟性能觀點視之，該處理劑之附著量爲 1 〇 〇重量份聚胺基甲酸乙酯彈性纖維之超出2重量份者 宜，更佳者爲2. 1〜5.0重量份，最佳者爲2.3〜3.0重量份 〇 更於不損及本發明效果下’於處理劑中亦可添加公知 之配合劑、聚酯改性聚砂氧、聚醚改性聚矽氧’該成份以 外之有機聚矽氧院、胺基改性聚砂氧、胺酸改性聚砂氧、 滑石、二氧化矽、膠質氧化鋁等鑛物性微粒子、硬脂酸鎂 、硬脂酸錦等高級脂肪酸金屬鹽粉末、高級脂肪族羧酸、 一 15 - (13) (13)200400288 石蠟、聚乙烯、松脂等於常溫下以固體蠟進行添加之。 本發明聚胺基甲酸乙酯彈性纖維之特徵爲具有透明感 之同時具良好磨擦性者。藉由後述之方法後摩擦係數（|Lld )爲1 . 6以下者宜，1 . 5以下爲更佳，1 . 3以下爲最佳者。當 超出1.6時，則於易紙尿褲製造步驟中產生斷線。 本發明聚胺基甲酸乙酯彈性纖維因附與具特定潤滑性 能之處理劑，因此，於供給紙尿褲製造步驟前無需經由延 伸一收縮復元處理步驟等，可適用做爲具良好步驟性能， 柔軟彈性性能，具透明感之紙尿褲橡膠部者。 【實施方式】 以下藉由實施例更詳細說明本發明之實施形態。 <實施例1〜1 3及比較例1〜5 > 藉由實施例具體說明本發明，惟，本發明未受限於等 者。 本發明所使用之評定方法如下。 (1 ) 解開性（反卷解開速度） 將4kg之被紡紗，卷取於紙管之1 24 0dt/144單絲之彈 性纖維卷絲體進行評定放置2 5 °C，6 5 % RH氣氛下1個月 後，1 5 °C，4 0 % R Η下放置2天，2 5 °C，6 5 % R Η氣氛下 放置1個月之結果。 將卷絲體置於漆器表面滾輥上，旋轉滾輥之同時，以 一 16— (14) 200400288 滾輥表面速度1⑼Π1/分鐘進行送出彈性纖維，於相隔50cm 處所設置相同直徑之漆器表面滾輥上進行卷取。緩緩由 20 0m/分鐘降低卷取滾輥上之表面速度，進行測定送出滾 輥上彈性纖維開始反卷時之速度。此値愈小代表由卷絲體 脫線愈佳，判定此具良好解開性者。 (2) 斷線之評定 將2.0kg紡絲卷取於紙管之4 70dt之彈性纖維卷絲體利 用如圖1所示裝置進行測定。以彈性纖維送出滾輥（A ) 速度50m/分鐘，3次卷取彈性絲之預通風滾輥 （B)之速 度80m/分鐘，卷取滾輥 （E )之速度80m/分鐘進行卷取。 進行2 0分鐘目測觀察（F )部位之彈性纖維之動向，依 以下基準進行評定之。 〇：絲搖晃幅度不足1cm。 △: 絲搖晃幅度爲1 cm以上。 X : 斷線。 (3 ) 黏著性 附著0.1 g/m 熱熔融黏著劑於1條延伸2倍之124 Odt彈 性纖維上，兩側以聚丙烯不織布挾住，由其上面以1 3 0 °C熱物體進行彈性纖維與紡之熱壓黏。於4 〇 之條件下 將此放置1週後，切斷200 mm長之熱壓黏體，於相當體溫 J 5 C氣氛下測定放置2 4小時後彈性纖維之長度。良好 黏著性其收縮小、完全未收縮爲200mm、完全收縮爲 (15) (15)200400288 10 0mm者，數値愈大代表黏著性愈佳者。 (4) 穿脫性 紡絲卷取於紙管之470 dt彈性纖維以公知方法供於紙 尿褲製造步驟中，於腰部及腿部之橡膠部利用彈性纖維製 造紙尿褲。1 5個產後9〜1 3個月之幼兒藉由盲檢同條件下利 用試驗之紙尿褲用於幼兒，讓其母評定穿著時及排尿後， 脫去時穿著之容易性。依其平均値代表以下分數。 5分：穿脫性極佳 4分：穿脫性佳 3分：穿脫性普通 2分：穿脫性稍差 1分：穿脫性不良 (5 ) 尺寸伸縮性 5個產後1 3個月幼兒藉由盲檢，同條件下使用試驗紙 尿據’排尿後脫掉，檢視腹部及腿之紅印的有無與是杏出 現漏尿。 紅印係藉由目測所判定之程度做成以下之記號。 〇：無紅印。 △:薄紅印。 X :明顯紅印出現。 (6)磨擦性 (16) (16)200400288 利用圖2所不裝置，進行測定2 . 〇kg被紡絲，卷取於紙 管之3 1 0 dt彈性纖維之卷絲體。以彈性纖維送出滾輥（a )速度50m/分鐘，3次卷取彈性絲之預通風滾輥（b )之 速度8 0 m /分鐘’ （c ) 之速度1 5 0 m /分鐘進行卷取之。測 定此時絲的走向應力T 1及T 2後’依下次求出動摩擦係數 (μ d )。 μ(1=1η (T2/T1) /〇·57γ。 μ d愈小’與陶瓷胡克導向之摩擦愈小爲愈佳。 (7) 透明度之評定 後罩板中附有動物花色圖案之市販紙尿褲花色上並排 1 0條3 1 0 d t之聚胺基甲酸乙酯彈性纖維後，目測其花色消 失之程度依以下基準進行判定之。 〇：具透明性爲良好者。△:透明性稍差。X :無 透明感。 (實施例1〜8 ) 將400g數平均分子量1800之共聚聚（四伸甲基·新戊 烯）醚二醇 （PTXG •新戊烯之共聚率1 1 莫耳％ )與 9 1 · 7 g之4，4 ’ -二苯基甲烷二異氰酸酯於乾燥氣氣氛下，8 0 °C，攪拌下進行反應3小時後，取得末端以異氰酸酯蓋 住之聚胺基甲酸乙酯預聚物。此於室溫進行冷卻後，加入 7 2 0 g二甲基乙醯胺溶解後，調製聚胺基甲酸乙酯預聚物溶 液。另外，將8 · 1 1 g乙烯二胺及1 · 3 7 g二乙胺溶於3 9 0 g二 (17) (17)200400288 甲基乙醯胺後，將此於室溫下加入該預聚物溶液後’取得 黏度40 0 0粕 （3 0 °C )之聚胺基甲酸乙酯溶液。 重覆此操作取得之聚胺基甲酸乙酯溶液中，針對聚胺 基甲酸乙酯固形份，進行添加1重量份之4，4 ’ -亞丁基 雙-(3-甲基-6-第三-丁基苯酚）、0.5 重量°/。之2- (2’-羥 基-3 ’ -第三-丁基-5 5 -甲基苯基）-5 -氯·苯並三唑，取得紡 絲用原液。又，於實施例3中，針對1 0 0重量份聚胺基甲 酸乙酯固形份進行添加〇. 3重量份之氧化鈦。 將此取得之紡紗用原液，由紡紗接頭之細孔於熱風中 擠出後，使溶劑蒸發。被乾燥之絲條通過捻線鋼頜之過程 下進行捲曲，經過導絲輪後於注油輪上附與處理劑’以每 分鐘5 00m/分鐘速度卷取於紙管。適當變更紡絲接頭’紡 紗條件後，取得1 240dt/144 單絲、470dt/56單絲、 3 10dt/3 6單絲之3種聚胺基甲酸乙酯彈性纖維。 如表1所示，變更處理劑之組成及附著量後’取得實 施例1〜8之聚胺基甲酸乙酯彈性纖維後，進行該聚胺基甲 酸乙酯彈性纖維之各種性能之評定。表1中之鑛物油1 5 cs 者，二甲基聚矽氧烷爲1 〇 c s之聚二甲基矽氧烷者。 (比較例1〜4 ) 如表1所示，變更處理劑之組成及附著量之外’與實 施例1同法取得比較例1〜4之聚胺基甲酸乙酯彈性纖維後’ 進行評定該聚胺基甲酸乙酯彈性纖維之各種性能。又’比 較例2中，附著2重量％硬脂酸鈣與98重量％之鑛物油所 一 20 - (18) 200400288 成處理劑。 (實施例9〜13)(1) (1) 200400288 发明, description of the invention [Technical field to which the invention belongs] The present invention relates to polyurethane elastic fibers. More specifically, it relates to polyurethane elastic fibers suitable for rubber parts of diapers. M Polyurethane elastic fibers with mutual adhesion to non-woven fabrics, releasability of the winding body, low friction of the coil guide, beautiful appearance of the diaper, and comfort when worn. [Previous technology] The waist and legs of the diaper, that is, the rubber part, are made of polyurethane elastic fibers used after laminating plastics between overlapping non-woven fabrics. The urethane elastic fiber is laminated with plastic until the guide coil of the step changes the friction property of the guide, and various inorganic metal compounds are added to the polyurethane elastic fiber. However, these inorganic metal compounds impair the transparency of polyurethane elastic fibers. In recent years, a diaper with a small animal and a pattern on the back of a diaper has been used. Such a diaper has problems in that the polyurethane elastic fibers of the design have no transparency of the polyurethane and impairs the design appearance. For this reason, it is preferable that diapers do not include polyurethanes of these inorganic metal compounds as much as possible. However, polyurethane elastic fibers with a small amount of inorganic metal compounds increase the guide friction, and the guide coils in the manufacturing steps are prone to disconnection, which is extremely difficult to apply to the use of diapers. _4a (2) (2) 200400288 In addition, when the adhesion to the non-woven fabric is poor, problems such as slack rubber parts when worn and poor adhesion when worn, have been proposed to improve adhesion. Japanese Unexamined Patent Publication No. 5-5 0 4 2 9 discloses an elastic coil body with a treatment agent attached to a content of 2% by weight or less, or an elastic coil body with good release and adhesion properties. Japanese Patent Application Laid-Open No. 2000-3 2 7224 discloses an elastic coil body which is provided with 3.0 to 10.0% by weight of a processing agent made of a polypropylene glycol-based polyol, which has good releasability and adhesion. Japanese Unexamined Patent Publication No. 10-1 5 2 2 6 4 discloses an elastic coiled body which is provided with a specific surface tension oil agent with good releasability and adhesiveness. In addition, in order to manufacture a diaper having both good stretchability and recoverability, it is disclosed in JP-A No. 2 0 1-2 9 3 8 6 that it is stretched 4 times or more to elastic yarn, and then contracted and restored. A method of manufacturing a diaper in a step of manufacturing a diaper. However, this method must use the extension-contraction recovery process when winding the elastic fiber, or after rewinding, so that the steps are complicated and prone to disconnection and other errors. In this way, in the prior art, it is impossible to simultaneously satisfy the elastic fibers of the diaper which have the steps of beauty, wearing comfort, release, and adhesion. [Summary of the Invention] Therefore, in order to solve the problem, the present invention provides a method for manufacturing a diaper, which can obtain good adhesion with non-woven fabrics without extra steps, and good unbundling by winding the package. Excellent step performance, good comfort when wearing. 'Transparent polyurethane elastic fiber for the diaper rubber. (3) (3) 200400288 Also, “the other object of the present invention is to provide an easy-to-wear, take-off, and free movement” and a comfortable person. At the same time, for fast-growing children, they can still make flexible diapers according to their body shape changes. Polyurethane elastic fiber effective for diaper applications. That is, this application provides the following inventors. (1) Polyurethane elastic fiber containing a polyurethane polymer, attached with (a) a number average molecular weight of 400 to 2000, and a melting point of 20 t: the following homopolymerized or copolymerized polyelongation Alkyl ether diols, (b) higher alcohols with OH groups at the ends and 8 to 25 carbons, and (c) mineral oil at 25 ° C with a dynamic viscosity of 5 to 50 cs, dimethyl polysiloxane, Or the polyurethane elastic fiber described in the treatment agent of a mixture of mineral oil and dimethylpolysiloxane. (2) Polyurethane polymer is composed of (i) organic diisocyanate compound, (ii) more than one linear or branched chain alkylene group and tetramethylene group with carbon number of 1 to 8 Copolymerized polyalkylene ether glycols having a number average molecular weight of 500 to 5000, and (iii) polyaminocarboxylic acids obtained by reacting active hydrogen-containing compounds containing isocyanate groups Ethyl acetate polymer of the polyurethane elastic fiber contained in the item (1). (3) The treatment agent is composed of the component (1) or ((1)) of 15 to 95% by weight of the component U), 2 to 30% by weight of the component (b), and 3 to 80% by weight of the component (c). 2) The polyurethane elastic fiber according to the item. One 6 "(4) (4) 200400288 (4) For 100 parts by weight of polyurethane elastic fiber, any one of the items (1) to (3) above 2 parts by weight of the treatment agent is attached Polyurethane elastic fiber. (5) The polyurethane elastic fiber according to any one of the items (1) to (4) with a dynamic friction coefficient of 1.6 or less. (6) It further contains an inorganic metal compound The content of the inorganic metal compound is 100 parts by weight or less of 1.0 part by weight of the polyurethane elastic fiber, and the polyurethane elastic fiber according to any one of the items (1) to (5). (7) The polyurethane elastic fiber according to any one of the items (1) to (5) containing an inorganic metal compound. (8) The homopolymerized or copolymerized polyalkylene ether glycol of the component (a) is polypropylene glycol The polyurethane elastic fiber according to any one of items (1) to (7). (9) The polyurethane elastic fiber according to any one of (1) to (8), which is wound up (10) The polyurethane elastic fiber coil body according to any one of the items (1) to (8) (11) Made of a composition containing 15 to 95% by weight of the component (a), 2 to 30% by weight of the component (b), and 3 to 80% by weight of the component (c). Process for producing polyurethane elastic fiber in the step of treating agent in polyurethane elastic fiber containing polyurethane polymer. (A) a number average molecular weight of 4,000 to 200, and, Homopolymerized or copolymerized polyalkylene ether glycols with a melting point of 20 ° C at (5) (5) 200400288; (b) higher alcohols with OH groups at the ends and 8 to 25 carbons; (c) 2 5 Mineral oil, dimethyl polysiloxane, or a mixture of mineral oil and dimethyl polysiloxane with a dynamic viscosity of 5 to 50 c s. [Best Mode for Carrying Out the Invention] Hereinafter, the present invention will be described in detail. Explanation: The inventors found that after using polyurethane elastic fibers with a specific treatment agent attached to the rubber portion of the diaper, the step performance is good, and the wearing and taking-off property is comfortable when wearing, and at the same time, it has good wearing feeling and size applicability Also excellent. Polyurethane polymer of the polyurethane elastic fiber of the present invention Polymer diols, organic diisocyanate compounds, and polyurethane polymers obtained after the reaction of compounds containing hydrogen fluoride are ideal users. As the polymer diols, known polyether diols, polymers Polyester diols are preferred, such as ester diols, polycarbonates, etc. As examples of polyether diols, those having a number average molecular weight of 500 to 5,000, such as polyether diol, are suitable, such as: Examples of tetramethylene ether glycol (PTMG), tetramethylene and polyalkylene ether glycol copolymerized with other alkylenes. Polyurethane polymer made from polyether ether glycol has good elasticity and hydrolysis resistance. Among them, one or more kinds of tetramethyl groups which are different from tetramethyl groups, and straight or branched carbon groups of the tetramethyl groups are copolymerized by block or random ether linkage copolymerization. The most suitable is alkylene glycol. —8— (6) 200400288 As examples of the structure of copolymerized butylene ether glycol with tetramethylene as A and other alkylene as B H 0-A-0-B _ OH with 1 bond each, HO-AOAOAOBOBOB-OH with blocks A and B, and HO-AOBOAOBOA-0- B-with regular arrangement 〇 Η, etc. In addition to this, the configuration of A, B is an example of random structure. Compared with the use of polyalkylene ether glycols containing two or more polyalkylene ether glycols, when using a polyalkylene ether glycol formed of one type of alkylene glycol, it is less likely to crystallize during elongation, so it can be obtained Polyurethane elastic fiber with good softness, low hysteresis loss characteristics and low residual deformation characteristics. This diaper is used for the rubber part of the diaper to obtain comfortable putting on and taking off property and a feeling of wearing, and the dimensional diaper is strong. From the viewpoint of obtaining water resistance, light resistance, and abrasion resistance of polyurethane elastic fibers, the copolymerized polyalkylene ether glycol used in the present invention is based on the viewpoint that one of the alkylene groups is a tetramethylene group. In addition, it is preferable that one or more kinds of straight-chain or branched alkylene groups having a carbon number of 1 to 8 other than the tetrasubunit are suitable. Among them, the copolymerization of tetramethylene with neopentenyl and / or 2-methylbutene is a copolymerization of poly (alkylene ether glycol), that is, copolymerization of poly (tetramethylol · neopentene) ether glycol, copolymerization. Poly (tetramethylene 2-methylbutene) ether glycol is preferred. From the point of view of elasticity, copolymerized poly (tetramethylene neopentene) ether glycol is the best. Copolymerized polyalkylene ether diols of tetramethylene and other alkylenes have a molar ratio of alkylene other than tetramethylene to 1000 mole%. 3 moles of the total alkylene combination contained in the glycol. Above 8% and below 5 mol% are preferred, and above 4% and above 70 mol% are more preferred. When the combination of alkylene groups other than tetramethyl groups is not 9-1 (7) 200400288, which is less than 3 mole%, the effect of improving the elasticity function will be small. On the contrary, exceeding 85 mole% will reduce the elongation and strength. . As the organic diisocyanate, all of the aliphatic, cycloaliphatic, and aromatic isocyanuric acid vinegars that are soluble or liquid under the reaction conditions are applicable. Such as: methyl-bis (4-phenyl isocyanate), methyl-bis (3-methyl-4-phenyl isocyanate), 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, m- -And p-xylene diisocyanate, α, α, α ', α'_tetramethyl-xylene diisocyanate, m- and p-benzene diisocyanate, 4,4'-dimethyl-1,3- Xylene diisocyanate, 1-alkylbenzene-2,4- and 2,6-diisocyanate, 3- (α-isocyanateethyl) phenyl isocyanate, 2,6-diethylbenzene-1,4-di Isocyanate, diphenyl-dimethylmethane-4,4-diisocyanate, diphenyl ether-4,4'-diisocyanate, naphthene-bis (4-cyclohexyl isocyanate), I, 3, and 1, Examples of 4-cyclohexene diisocyanate, trimethylidene diisocyanate, tetramethylidene diisocyanate, pentamethylidene diisocyanate, hexamethylidene diisocyanate, isoflurone diisocyanate, and the like. Methyl bis (4-phenylisocyanate) is preferred. As the active hydrogen atom compound containing a chain extender, it includes an aliphatic, alicyclic or aromatic active hydrogen amine group having a hydrazine, a polyhydrazine, a linear or branched chain having 2 to 10 carbon atoms Compounds, such as: diamines such as ethylene diamine, 1,2 diene diamine, diamines such as ureido diamines disclosed in JP-A No. 5-1 5 5 84 1, hydroxylamine, water, or low molecular weight Glycols such as ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 2,2-dimethyl-1,3-propylene glycol, 1,4-butanediol, 1,3-butanediol , Hexamethylene glycol, diethylene glycol, 1,10-decanediol, 1,3-dimethylolcyclohexane, 1,4-dimethylolcycloone 10-(8) (8 200400288 Hexane can be used. Ethylene diamine and 1,2-propanediamine are preferred as those having a monofunctional activated hydrogen atom as a terminal terminator. For example, dialkylamines such as diethylamine can be used. These chain extenders and terminal terminators can be used alone or in combination of two or more. In the present invention, when a polyurethane polymer is produced by homopolymerizing or copolymerizing a polyalkylene ether diol, a diisocyanate compound, and an active hydrogen-containing compound, a known polymer polymerization technique can be used. . For example: After reacting the polyalkylene ether glycol with an organic diisocyanate at a molar ratio of 1: 1.2 to 2.2, preferably 1: 1.3 to 1.8, synthesize an urethane prepolymer having isocyanates at both ends. After the chain extension reaction of the urethane prepolymer is performed by a diamine compound or a diol compound, a polyurethane polymer can be obtained. Regarding the operation of the polyurethane reaction during the synthesis of the polyurethane prepolymer, when the polyurethane prepolymer and the activated hydrogen-containing compound react with each other, no solvent or dimethyl can be used. Solvents such as medonylamine, dimethylarsox, dimethylacetamide. The stoichiometric ratio of the various compounds used in the present invention is preferably one in which the sum of the hydroxyl groups of the polyoxymethylene ether glycol and the activated hydrogen such as the diamine compound is 1.00 to 1.07 equivalents of the isocyanate group of the isocyanate compound. Since the polyurethane elastic fiber of the present invention is attached with a treatment agent having specific lubricating properties as described later, even if it does not contain an inorganic metal compound or contains a trace amount, sufficient friction can be obtained, which can ensure the transparency of the fiber. As the inorganic metal compound used in the present invention 11- (9) (9) 200400288, said polyurethane elastic fiber is: a metal oxide selected from the group consisting of Ti, Mg, Al, Zn, Ca, Examples of hydroxides' carbonates, nitrates, sulfates and these monomers or complex salts of inorganic metals. Preferred inorganic metal compounds are, for example, titanium oxide, zinc oxide, magnesium oxide, hydrotalcite, CaMg3 (C03) 4 and the like. From the standpoint of improving frictional properties, titanium oxide is particularly preferred. The polyurethane elastic fiber according to the present invention preferably has an inorganic metal compound in an amount of 100 parts by weight or less of 1.0 part by weight of the solid content of the polyurethane, and those not containing it may also be used. It is preferably 0.5 parts by weight or less, and particularly preferably 0.3 parts by weight or less. If ft is added in an amount of 1.0 part by weight or more, the transparency of the polyurethane elastic fiber will be reduced. As long as it is added in a small amount, the disconnection can be improved by the rubbing step. Polyurethane elastic fibers as additives other than the above may also use well-known organic or inorganic compounds, such as: heat stabilizers, antioxidants, ultraviolet absorbers, anti-yellowing agents, anti-heat discolorants, Add anti-sticking agent, pigment, antistatic agent, anti-fungal agent, colorant, filler, etc. Polyurethane elastic fibers are used for dry spinning, melt spinning, or wet spinning of polyurethane polymers (or polyurethane polymer compositions containing additives) in common methods. Available after yarn. The number of monofilaments of polyurethane elastic fibers is not limited, and can be monofilaments or composite filaments. From the viewpoint of adhesion, the monofilament fineness is 5 ~ 1 5 dt (decite X) The composite silk is suitable. Polyurethane elastic fibers with a total fineness of 1 80 ~ 2 2 0 0 dt are preferred. The obtained polyurethane elastic fiber is attached to a treating agent by a known method such as an oil injection wheel, an oil injection guide, an oil injection spray, and the like before and after the paper tube roll is wound up. The present inventors have discovered that the treatment agent made of a specific composition described in detail below can not only improve processing properties such as adhesion, release properties, and linear breakage by attaching polyurethane elastic fibers, but also attach and improve silk. Special effects of elastic properties. In particular, by using a polyurethane elastic fiber having a low crystallinity copolymerized polyalkylene ether glycol, the polyurethane elastic fiber is not easily crystallized during stretching, and therefore it is low in stretching. When the stress is stretched and contracted, it exhibits high recovery, and has ideal low hysteresis loss characteristics and low residual deformation characteristics. In other words, polyurethane elastic fibers with soft elastic properties can be obtained. When this is used for the rubber part of a diaper, it is possible to obtain a comfortable diaper which is comfortable to wear on and off, and has a large size. Hereinafter, each component contained in the processing agent will be described in detail. (a) The homo- or co-polymerized polyalkylene ether glycol compound of the component penetrates into the amorphous portion of the soft portion of the polyurethane polymer of the present invention using co-diol as a raw material, and is presumed to have For the effect of lubricant, when the elastic fiber is stretched, softer elastic characteristics appear. (A) Since the component does not easily remain on the surface layer of the infiltrated yarn, the effect of reducing the resistance to changing the direction of the guide coil is small. (A) Component whose number average molecular weight is 400 ~ 2000 and melting point is less than 20 t, polymerize or copolymerize alkylene oxide such as ethylene oxide or propylene oxide, or use low molecular polyalkylene glycol to use ring Ethylene oxide and propylene oxide were obtained by copolymerization. Among them, propylene oxide alone polymer, that is, polypropylene glycol (PPG) is preferred. When the number average molecular weight of the homo- or copolymerized polyalkylene ether glycol compound is less than 400, it is easy to fly from silk with time (11) 200400288 0. If the number average molecular weight exceeds 2000, the releasability is deteriorated. In addition, when the melting point exceeds 20 ° C, the release property is deteriorated in winter. As a result, disconnection often occurs during the manufacturing process of diapers. The treatment agent formed by attaching the component (a) to the polyurethane elastic fiber is not easy to dissolve. Therefore, apart from the component (a), it must be treated as the (c) component from the point of release. Mineral oil, dimethyl polyoxane, or a mixture of mineral oil and dimethyl polysiloxane is contained as a treatment agent. As the (C) component of dimethyl polysiloxane, such as: 1) polydimethyl siloxane formed from dimethyl siloxane units, 2) dimethyl siloxane units and carbon containing Poly-Secondary-based Siloxane Units Formed By 2 ~ 4 Hospital-Based Sand-Based Oxygen Units, 3) Polysiloxanes Formed By Dimethyl Silane Units And Methylphenyl Siloxane Units Class etc. Preferred is polydimethylsiloxane (DMS). (c) The 25 ° C kinematic viscosity of mineral oil and dimethyl polysand oxygen institute in the composition is measured by cannon fen ske ’s viscosity tube in a constant temperature water tank when the method is 5 to 5 0 c s. Furthermore, the components (a) and (c) can be uniformly adhered to the polyurethane elastic fibers to improve mutual solubility. 'Must be at the quotient of (b) the component has an oxo group and a carbon number of 8 to 25. Higher alcohols are included as a treatment agent. As an example of the component (b), higher aliphatic alcohols such as isostearyl alcohol (ISA) 'isoamine alcohol are preferred. In the polyurethane elastic fiber of the present invention, after attaching these ingredients, the diaper was used for the first time to satisfy both wearing comfort and step comfort. (12) (12) 200400288 Polyurethane Ester elastic fiber. The respective component treatment agents contained in the polyurethane vinegar elasticity recognition of the present invention can also be attached to each, but the treatment agent containing the three components at the same time is the most ideal. As a treatment agent, the proportion of (a), (b), (c) 3 components in the treatment agent is (a) the component is 15 to 95% by weight, and (b) the component is 2 to 30% by weight '( C) The composition is 3 ~ 80 weight. / 〇 should be. When the component (a) is less than 15% by weight, soft elastic properties cannot be obtained, and when it exceeds 95% by weight, the disentanglement property of the elastic fiber is reduced. When the component (b) is less than 2% by weight, the mutual solubility of the treating agent cannot be ensured. Conversely, exceeding 30% by weight will reduce the stability of the treatment agent. (C) When the content is less than 3% by weight, the releasability is deteriorated, and when it exceeds 80% by weight, (a) the content ratio is decreased, and the effect of the present invention cannot be obtained. Ideally, (a) the content is 20 to 95% by weight '(b) the content is 2 to 20% by weight' (c) the content is 3 to 70% by weight. From the adhesion, release properties, and linearity of the polyurethane elastic fibers in the step, the performance of the treatment agent is based on 1,000 parts by weight of polyurethane. The amount of the ester elastic fiber is more than 2 parts by weight, more preferably 2.1 to 5.0 parts by weight, and most preferably 2.3 to 3.0 parts by weight. 〇Can also be added to the treatment agent without impairing the effect of the present invention. Well-known compounding agents, polyester-modified polyoxysilanes, polyether-modified polyoxysiloxanes, organic polysiloxanes other than this ingredient, amine-modified polyoxysilanes, amine-modified polyoxysilanes, talc, two Mineral fine particles such as silicon oxide and colloidal alumina, powders of metal salts of higher fatty acids such as magnesium stearate and stearic acid, higher aliphatic carboxylic acids, 1-15-(13) (13) 200400288 paraffin, polyethylene, turpentine, etc. Add it with solid wax at room temperature. The polyurethane elastic fiber of the present invention is characterized by being transparent and having good friction. By the method described later, the coefficient of friction (| Lld) is preferably less than 1.6, more preferably less than 1.5, and most preferably less than 1.3. When it exceeds 1.6, a disconnection occurs in the manufacturing process of an easy diaper. Because the polyurethane elastic fiber of the present invention is attached with a treating agent having specific lubricating properties, it does not need to go through an extension and shrinkage recovery treatment step before being supplied to the diaper manufacturing step, and can be applied as having good step performance, softness and elasticity. Performance, transparent diaper rubber part. [Embodiment] Hereinafter, an embodiment of the present invention will be described in more detail through examples. < Examples 1 to 13 and Comparative Examples 1 to 5 > The present invention will be specifically described by way of examples, but the present invention is not limited to the same. The evaluation method used in the present invention is as follows. (1) Unwinding property (rewinding unwinding speed) 4kg of spun yarn is taken up in a paper tube of 1 240 0dt / 144 monofilament elastic fiber coil body for evaluation and placed at 2 5 ° C, 65% After 1 month in the RH atmosphere, it was left at 15 ° C, 40% R for 2 days, and at 25 ° C, 65% R was left for 1 month. Place the reel on the lacquer surface roller, while rotating the roller, send out the elastic fiber at a surface speed of 16— (14) 200400288 100Π1 / minute, and set the lacquer surface roller with the same diameter at a distance of 50cm. Take up. Slowly decrease the surface speed on the take-up roll from 200 m / min, and measure the speed at which the elastic fibers on the take-out roll begin to roll back. The smaller the size is, the better the thread is taken off from the coiled body, and it is judged that this has good releasability. (2) Evaluation of broken wire Take 2.0 kg of spinning yarn into a 4 70 dt elastic fiber coil body of a paper tube and measure it with the device shown in Fig. 1. The pre-ventilated roller (B) which winds the elastic yarn 3 times at a speed of 50 m / min with the elastic fiber sending roller (A) is 80 m / minute, and the speed of the winding roller (E) is 80 m / minute. The movement of the elastic fibers in the (F) part was visually observed for 20 minutes, and evaluated according to the following criteria. 〇: The silk swaying width is less than 1 cm. △: The silk swaying width is 1 cm or more. X: disconnected. (3) Adhesive adhesion 0.1 g / m hot melt adhesive on a 124 Odt elastic fiber that is twice as long as it is stretched on both sides with polypropylene non-woven fabric, and the elastic fiber is heated from above by a hot object at 130 ° C Hot pressing with spinning. This was left for one week under the condition of 40, and then the 200 mm-long hot-pressed adhesive body was cut, and the length of the elastic fiber after standing for 24 hours was measured in an atmosphere with a body temperature of J 5 C. Good Adhesion For those with small shrinkage, no shrinkage of 200mm at all, and full shrinkage of (15) (15) 200400288 10 0mm, the larger the number, the better the adhesion. (4) Putting on and taking off 470 dt of elastic fiber wound in a paper tube is supplied to the paper in a known method. In the diaper manufacturing step, paper-making diapers made of elastic fiber are used for the rubber part of the waist and legs. 15 infants from 9 to 1 to 3 months postpartum used blind tests to test the diapers for the infants under the same conditions. The mothers were asked to evaluate the ease of wearing when wearing and after urinating. The average 値 represents the following scores. 5 points: excellent put on and off 4 points: good put on and off 3 points: normal put on and off 2 points: slightly worse on put on and off 1 point: poor put on and off (5) dimensional flexibility 5 postpartum 1 3 months Infants are tested by blind test under the same conditions. They are taken off after urination, and the presence of red marks on the abdomen and legs is checked for leakage of apricots. The red marks are marked as follows by visual inspection. 〇: No red mark. △: Thin red mark. X: A clear red mark appears. (6) Friction (16) (16) 200400288 Using the device shown in Fig. 2, a measurement of 2.0 kg was spun, and it was taken up in a roll of 3 1 0 dt elastic fiber in a paper tube. Take the elastic fiber out of the roller (a) at a speed of 50 m / min, and wind the elastic yarn pre-ventilated roller (b) 3 times at a speed of 80 m / min '(c) at a speed of 150 m / min for winding Of it. After measuring the heading stresses T 1 and T 2 of the wire at this time, the dynamic friction coefficient (μ d) is determined next time. μ (1 = 1η (T2 / T1) / 〇 · 57γ. The smaller the d is, the better the friction between the ceramic and the Hook guide is.) (7) Evaluation of the transparency. There are 10 polyurethane elastic fibers of 3 1 0 dt side by side in the diaper color, and the degree of disappearance of the color is visually judged according to the following criteria. 〇: Those with good transparency. △: Slightly poor in transparency X: No transparency. (Examples 1 to 8) 400 g of a copolymerized (tetramethylated neopentene) ether glycol (PTXG • neopentene copolymerization rate of 11 mol%) with a number average molecular weight of 1,800 ) And 9 1 · 7 g of 4,4'-diphenylmethane diisocyanate in a dry gas atmosphere at 80 ° C under stirring for 3 hours to obtain an isocyanate-terminated polyurethane Ester prepolymer. After cooling at room temperature, 720 g of dimethylacetamide was added to dissolve, and then a polyurethane prepolymer solution was prepared. In addition, 8.11 g of ethylene diamine was prepared. After dissolving 1 · 37 g of diethylamine in 390 g of bis (17) (17) 200400288 methylacetamide, add this to the prepolymer solution at room temperature. After that, a polyurethane solution with a viscosity of 4,000 meals (30 ° C) was obtained. In the polyurethane solution obtained by repeating this operation, the polyurethane solid content was added and added. 1 part by weight of 4,4′-butylene bis- (3-methyl-6-third-butylphenol), 0.5% by weight of 2- (2′-hydroxy-3′-third-butyl -5 5 -methylphenyl) -5 -chloro · benzotriazole to obtain a dope for spinning. In Example 3, 100 parts by weight of polyurethane solid content was added. 0.3 parts by weight of titanium oxide. The obtained spinning dope was extruded from the pores of the spinning joint in hot air, and the solvent was evaporated. The dried yarn was passed through a twisted steel jaw After crimping, the treatment agent is attached to the oil filling roller after passing through the godet wheel, and the paper tube is taken up at a speed of 5,000m / min. After changing the spinning conditions of the spinning joint appropriately, 1 240dt / 144 monofilament and 470dt are obtained. / 56 monofilament, 3 10dt / 3 6 monofilament polyurethane elastic fibers. As shown in Table 1, after changing the composition and adhesion amount of the treatment agent, Examples 1 to 8 were obtained. After the polyurethane elastic fiber, various properties of the polyurethane elastic fiber were evaluated. For mineral oil 15 cs in Table 1, dimethylpolysiloxane is a polymer of 10 cs. (Comparative Examples 1 to 4) As shown in Table 1, except for changing the composition and adhesion amount of the treatment agent, the same procedure as in Example 1 was used to obtain the polyurethanes of Comparative Examples 1 to 4. After the ester elastic fiber, various properties of the polyurethane elastic fiber were evaluated. In Comparative Example 2, 2% by weight of calcium stearate and 98% by weight of mineral oil were attached. 20-(18) 200400288 Finishing agent. (Examples 9 to 13)
以數平均分子量1800之聚四伸甲基醚二醇 （PTMG) 取代實施例1之數平均分子量1800之共聚聚（四伸甲基· 新戊烯）醚二醇使用後取得黏度41 〇〇粕 （30 °C )之聚胺 基甲酸乙酯溶液中，針對聚胺基甲酸乙酯固形份，進行添 加1 重量％之4，4’-亞丁基雙-(3 -甲基-6-第三·丁基苯酚 )、0.5重量％之2-(2’-羥基-3’-第三-丁基-5’-甲基苯酚 )-5 -氯-苯並三唑後，取得紡紗用原液。又，實施例1 0及 1 2中，分別加入所定量之氧化欽。由此訪紗用原液與實施 例.1同法後製造附著如表1所示處理齊！I之聚胺基甲酸乙酯彈 性纖維後，進行評定該聚胺基甲酸乙酯彈性纖維之各種性 能。 (比較例5 ) 如表1所示變更處理劑之組成及附著量之外，與實施 例9〜1 3同法取得比較例5之聚胺基甲酸乙酯彈性纖維後， 進行評定該聚胺基甲酸乙酯彈性纖維之各種性能。 [產業上可利用性] 利用本發明聚胺基甲酸乙酯彈性纖維之紙尿褲顯示穿 脫容易、行動自如、且，具舒適感。且，快速成長之小孩 其體形變換時可顯現尺寸伸縮性強者。 ”21 - (19) 200400288 又’本發明聚胺基甲酸乙酯彈性纖維於製造紙尿褲時 ’與不織布之黏著性佳、由卷取卷裝之解開性良好、絲走 ί了時斷線少、具有良好之步驟性能者。 【圖式簡單說明】 ® 1係代表爲進行評定彈性纖維卷絲體斷線之裝置。 ® 2係代表爲進行評定彈性纖維磨擦性之裝置。Polytetramethylene ether glycol (PTMG) having a number average molecular weight of 1800 was used in place of the copolymerized poly (tetramethylene · neopentene) ether diol having a number average molecular weight of 1800 in Example 1. A viscosity of 41% was obtained after use. (30 ° C) to the polyurethane solution, adding 1% by weight of 4,4'-butylenebis- (3-methyl-6-third Butylphenol), 0.5% by weight of 2- (2'-hydroxy-3'-third-butyl-5'-methylphenol) -5-chloro-benzotriazole, and a spinning dope was obtained . In addition, in Examples 10 and 12, a predetermined amount of oxoxan was added, respectively. From this, the original solution for yarn access was made in the same way as in Example .1 and adhered as shown in Table 1! After the polyurethane elastic fibers of I, various properties of the polyurethane elastic fibers were evaluated. (Comparative Example 5) Except that the composition and adhesion amount of the treatment agent were changed as shown in Table 1, the polyurethane elastic fibers of Comparative Example 5 were obtained in the same manner as in Examples 9 to 13, and the polyamine was evaluated. Various properties of urethane elastic fibers. [Industrial Applicability] The diaper using the polyurethane elastic fiber of the present invention is easy to put on and take off, moves freely, and has a comfortable feeling. In addition, a fast-growing child can show a strong size and elasticity when the body shape changes. "21-(19) 200400288" The polyurethane elastic fiber of the present invention when manufacturing diapers "has good adhesion to non-woven fabrics, good releasability from winding and unwinding, and less disconnection when the wire is removed. Those with good step performance. [Schematic description] ® 1 represents a device for assessing the breakage of the elastic fiber roll. ® 2 represents a device for assessing the friction of the elastic fiber.
”22 - 200400288 【一*】 評定 I透明度| 評價 〇 〇 < 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇 <] 〇 X 〇 〇 摩擦性 m OO ON (N CN <N 00 CN 00 (N m OO d ΓΝ CN 紅印 Η 有無 〇 〇 〇 〇 〇 〇 〇 〇 〈 <3 〇 <3 <3 < < <1 尿漏 Η 莲 a 二 蕻 ta： 夺； 出i 贫: Mi 莲 穿脫性 g — rsi 寸· Ο — ¥ 〇 寸· OC rn 寸· 寸· ο ΓΟ (N rn rn r-j rn OO (N as rsi 寸 ri ΓΝ (N 黏著性 00 § OO JO s O ο Cn O 们 Ό •Ο 斷線 評價 <3 〇 〇 〇 < 〇 〇 X X 0 X <1 〇 〇〜△ 〇 X |反卷解 開速度 m/分 s ο ο § g m o ο § 1 氧化鈦0.3 ffi量份 趑 m m m -N ε ^ m e m ©i CN PPG之融點33 °C 氧化鈦03 ffi量份 氧化鈦15重量份 處理劑 附著量 重量份 寸 rn «Ο cn ίο •o rsi 一 00 (N OO (N m 一 r^i «Ο (N oc OO CN 00 (N 00 ri 00 (Ν 00 處理劑成份 S DMS 重量％ »n s S m ο 〇 O 〇 O S S S ο S 鑛物油 遣量％ O •o ο S S S ο 00 cs o o o ΓΝ Ό CN CN s ISA 重量％ o O ο o o S ο o o o «〇 ·〇 <Ν O PPG 重量％ S g g ο O 100 o o o |〇 〇 O O ο s 2 700 700 700 700 700 700 700 700 700 1 e 5000 o o 700 700 700 700 700 二醇 組成 PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG 實施例1 實施例2 實施例3 實施例4 實施例5 實施例6 實施例7 實施例8 比較例1 比較例2 比較例3 比較例4 實施例9 實施例10 實施例11 實施例12 實施例13 比較例5"22-200400288 [一 *] Evaluation of I transparency | Evaluation 〇〇 < 〇〇〇〇〇〇〇〇〇〇〇 〇 <] 〇X 〇〇 Friction m OO ON (N CN < N 00 CN 00 (N m OO d ΓΝ CN Red seal Η presence or absence 〇〇〇〇〇〇〇〇〇 〈〇 〇 〇 〈3〉 3 lt lt lt 1 urinary leakage a a 蕻 ta: rob; out of poverty: Mi lotus wear and tear g — rsi inch · 〇 — ¥ 〇 inch · OC rn inch · inch · ο ΓΟ (N rn rn rj rn OO (N as rsi inch ri ΓΝ (N adhesiveness 00 § OO JO s O ο Cn Ό Ό • 〇 Disconnection evaluation < 3 〇〇〇 < 〇〇XX 0 X < 1 〇〇 ～ △ 〇X | Unwinding speed m / min s ο ο gmo ο § 1 titanium oxide 0.3 ffi parts 趑 mmm -N ε ^ mem © i CN melting point of PPG 33 ° C titanium oxide 03 ffi parts titanium oxide 15 parts by weight treatment agent attachment amount parts by weight rn «Ο cn ίο • o rsi one 00 (N OO (N m a r ^ i «Ο (N oc OO CN 00 (N 00 ri 00 (N 00 treatment agent component S DMS weight%» ns S m ο 〇O 〇OS SS ο S Mineral oil output% O • o ο SSS ο 00 cs ooo ΓΝ Ό CN CN s ISA weight% o O ο oo S ο ooo «〇 · 〇 < Ν O PPG weight% S gg ο O 100 ooo | 〇OOOO s 2 700 700 700 700 700 700 700 700 700 700 1 e 5000 oo 700 700 700 700 700 700 Diol composition PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG PTMG Example 1 Example 1 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Example 9 Example 10 Example 11 Example 12 Example 13 Comparative Example 5
一 23 -Mon 23-