200824754 九、發明說明： 【發明所屬之技術領域】 本發明係有關於—種纖絲與使用該纖絲之球 ‘造方法，該纖絲係適用於羽球、網球、壁球玻爾、 合成線（string，亦稱羊腸線 綠4拍用 徊在古孜士目# m & gUU，而球拍線雖纖細， 仁係同強力、具耐用性，能提供良 【習知技術】 以以200824754 IX. Description of the Invention: [Technical Field] The present invention relates to a method for producing a fibril and a ball using the same, which is suitable for badminton, tennis, squash, and synthetic wire ( String, also known as the gut green 4 shot with the 孜 in the ancient 目目目 # m & gUU, while the racquet line is slender, the same strength and durability, can provide good [known technology] to
習知之羽球、網球、壁球等之球拍用合成線，多使用 其用作芯線之單絲或複絲以用作皮線之單絲（通常為 截面為圓形之圓形球拍線）編織或纏繞者。 例如羽球㈣拍鍊通常使祕㈣纽之單絲編織於 用作芯線之複絲者。 於特開平2-28Gm號公報巾提示之球拍用羊腸線，係 =提高使用時之_性為目的，透過接著劑，將長徑為短 徑1.5倍以上之扁平絲纏繞於芯線外周者。然而，若使用 扁平絲’與使用一般截面圓形之圓形球拍線時相較，羊腸 線之表面凹凸變少，因此無法得到與羽毛球或球之適度摩 擦’使擊球感變差。 於特開2005-304678號公報中提示一種方法，係以共 重合熱可塑性樹脂溶液將聚醯胺複絲芯線施以表面塗層， 將皮線編織或纏繞於芯線者。然而，皮線會因樹脂溶液而 局°卩/谷解’因此無可避免將使強力降低。 5 200824754 另外，關於球拍線中依熱融著而將纖維集束固定，於 特開昭58-118776 f虎公報中提示一種方法，係藉由將複絲 合捻後，再於非接觸狀態下加熱，將單絲間熱融著者。然 而’關於球拍線之實用耐用性這1，光融著單絲，是不 足夠的。 另外，變形截面纖維據知有多種種類。 於實開平5-81280號公報中提示一種室外人工草皮用Conventional badminton, tennis, squash and other racquets use synthetic threads, which are often used as monofilaments or multifilaments for core wires to be used as woven or entangled monofilaments (usually round racquets with a circular cross section). By. For example, the badminton (four) chain usually woven the monofilament of the secret (four) button into the multifilament used as the core. For the purpose of improving the use of the gut, the flat wire having a long diameter of 1.5 times or more of the short diameter is wound around the outer circumference of the core wire through the adhesive. However, when the flat yarn is used, the surface unevenness of the gut is reduced as compared with the case of using a circular racquet line having a generally circular cross section, so that it is impossible to obtain a moderate friction with the shuttlecock or the ball, which deteriorates the hitting feeling. A method is proposed in Japanese Laid-Open Patent Publication No. 2005-304678, in which a polyimide resin multifilament core is subjected to a surface coating by co-heavy thermoplastic resin solution, and a sheath is woven or wound around a core. However, the sheath will be decomposed by the resin solution, so it is inevitable that the strength will be lowered. 5 200824754 In addition, in the racquet line, the fiber bundle is fixed by heat fusion, and a method is proposed in the Japanese Patent Laid-Open Publication No. SHO 58-118776. The method is to heat the non-contact state by combining the multifilament yarns. , will be a hot melt between the monofilament. However, regarding the practical durability of the racket line, it is not enough to melt the monofilament. In addition, the deformed cross-section fibers are known to have various types. In the Japanese Patent Publication No. 5-81280, an outdoor artificial turf is suggested.
、、、戈4其特徵係具有合成樹脂製之扁平絲之寬度[至少具 有兩根以上扁平單絲連結之構造，其厚度D為〇·05〜 m再者連結部之厚度a為Q.〇2mm以上且厚度之差d A為0· 〇3mm以上者。 於特開平8销25號公㈣提示—種安全氣囊用纖 ^係由熱可重合體所構成之合成纖維，其單絲 ，於扁平基部之長度方向具有i〜3個凸部， 則，半圓形之突起部者，扁平基部長度方= =)與自略半圓形突起部觀到相對侧料部項^ 广比為4/1〜2/卜且單絲纖度為二 馬7§/d以上者。 強度 於特開平9、111532號公報中提示_種人工 夕、其特徵係為由熱可塑性重合體構成之扁平度原 扁平絲，於寬度方向正反兩面，各形成$〜二二〜1〇 6 200824754 度方向連續之溝，該溝之深度為扁平絲厚度之3〜11%者。 於特開平2002-293209號公報中提示一種安全氣囊用 纖維，係由合成纖維複絲所構成之安全氣囊用纖維，構成 前述合成纖維複絲之單絲之單絲纖度為2〜7dtex，單絲截 面形狀係最大長軸長a與最大短軸長b之比以a/b表示之 扁平率為1 · 5〜8之長方形截面，且單絲之最大短軸長b與 最小短軸長c以式c/bxl00表示之長軸方向表面凹凸率為 ❿。80〜100%者。 【發明所欲解決之課題】 希望能開發出一種球拍線，係有關於一種球拍用線， 其上述芯線周圍以皮線編織或纏繞，更為纖細，且具有耐 用性，擊球感良好者。 為得出更纖細之球拍線，將使芯線更細、或使用作皮 線之纖絲更細，或是兩者都更細。若芯線是複絲，例如減 $ 少構成複絲之纖絲根數，以使芯線更細。不論是何種情況， 纖維（樹脂）之使用量都將減少，因此球拍線的強力也將 降低，因而無可避免地將使耐用性降低。尤其是有助於增 加強力之芯線若是變細，則強力也會大幅降低。 然而，若使用作皮線之單絲變細，也會產生以下問題。 首先，細單絲的製造，以習知之單絲紡絲機來說，有 許多經濟、技術上的問題。意即，為得纖絲，材料之吐出 量會變少，生產性降低，紡絲機内之材料滯留的時間也會 7 200824754 變長，因此容易產生材料之熱分解或加水分解，所得球拍 線之物性、不均之問題也會很多。 另外，以習知之斜機制作纽之細單絲被覆於怒 線周面時，為了被覆忍線周面整體，有必要增加作為合搶 絲所使用的單絲根數。具體而言，以往皆將直徑〇肩丽之 單絲3根合捡供給，但細單絲直徑若在〇. 〇5咖或以下時， 只有3根易產生空隙，因此有必要將4根以上合捻供給。 • 增加合捻的根數時，各纖絲未必會薄薄地於被覆層排為一 列，而產生鬆弛、重疊集束之問題。如此，在將多根纖絲 合捻製線時，若要使厚度报薄之組合構造安定，則會產生 問題。另外，若將單絲拾線後供給，會增加被覆層之厚度， 結果無法得出細球拍線。 本發明之目的，在提供一種適用於球拍線之纖絲，該 纖絲雖然纖細，但強力高、耐用性強，真可得良好之擊球 春感，更提供一種球拍線及其製造方法，該球拍線雖然細， 但強度高、耐用性強，且可得良好之擊球感。 本發明者檢討上述問題的結果，發現藉由將用作皮線 之纖絲之截面形狀，改為2〜6個略圓形及/或略機圓形呈 線狀連結之變形截面形狀，可得雖纖細俱強力高 、具耐用 性、擊球感良好之球拍線。另外，將用作皮線所編織或纏 k之義、、、Ή著於其他纖絲之接觸部，真用作皮線所編織或 8 200824754 纏繞之纖絲與芯線，融著於纖絲與芯線之接觸部，藉此可 得更細緻、具耐用性之球拍線。 本發明包含以下發明： (Ο 一種球拍線用纖絲，其截面形狀係2〜6個略圓形 及/或略橢圓形呈線狀連結之變形截面形狀，於前述截面 形狀中，對連結2〜6個略圓形及/或略_形中心之軸線 垂直方向之厚度中最大值設為D(腿），對略圓形及/或略 橢圓形之連結部中之前述軸線之垂直方向厚度中之最小值 設為d(mm)，前述軸線方向之纖絲長度設為1(醒）時，滿足 下述式者。 D=0· 〇2~0· 08(mm) 0. 〇1 (mm) d/D=〇.2 〜0·7 L=0·〇6〜0·4(mm) (2)—種球拍線，係於芯線周圍，以用作皮線之上述（ι) 所記載之纖絲編織或纏繞者。 (3)上述⑴所記載之球拍線’其前述用作皮線所編 織或纏繞之纖絲，躲著於其他纖絲之接觸部，且前述用 作皮線所m魏讀絲與㈣，伽著城絲與怒線 之接觸部者。 ⑷上述⑴《（3)所記載之球拍線，其料之漆點 200824754 M(C) ’與用作皮線之麟之熔點价），兩者之關係為μ (5) 上述（2)〜（4)所記載任一種之球拍線，其芯線 與皮線係皆由聚醯胺樹脂構成者。 、 (6) 上述（2)〜（5)所記載任一種之球拍線，其表面 更以樹脂層被覆者。 .(7) 一種球拍線之製造方法，其含有工程（A)，係芯線 # 周圍以用作皮線之上述（1)所記載之纖絲編織或纏繞者。 (8) 上述（7)所記載球拍線之製造方法，其芯線之熔 點M(°C)，與用作皮線之纖絲之熔點m(r)，兩者之關係為 Μ 2 ra 者。 (9) 上述（8)所記載球拍線之製造方法，其包含工程 (B) ’係將於工程（人）所得之球拍線以熔點111:|：1()。^熱處 理’將前述用作皮線所編織或纏繞之纖絲，融著於其他纖 φ 絲之接觸部，將前述用作皮線所編織或纏繞之纖絲與芯 線，融著於纖絲與芯線之接觸部者。 (10) 以上述（7)〜（9)所記載任一種製造方法所製 造之球拍線。 【發明效果】 依據本發明，將用作皮線使用之纖絲之截面形狀，形成 2〜6個略圓形及/或略橢圓形呈線狀連結之變形截面形 200824754 狀，可得雖纖細但強度高、具耐用性、擊球感良好之球拍 線。另外，將用作皮線所編織或纏繞之纖絲融著於其他纖 絲之接觸部，且將用作皮線所編織或纏繞之纖絲與芯線融 著於纖絲與芯線之接觸部，藉此可獲得更緻密且更具耐用 性之球拍線。 【實施發明之最佳型態】 - 以下參照圖面詳細說明關於本發明。 I 首先，說明關於本發明球拍線之纖絲。 前述纖絲係截面（對纖絲長度方向垂直之截面）形狀j 為2〜6個略圓形（含正圓形）及/或略橢圓形（含橢圓形） 呈線狀連結之變形截面形狀，於前述截面形狀中，對與連 結各略圓形及/或略橢圓形中心之軸線垂直方向之厚度中 最大值設為D(mm)，略圓形及/或略橢圓形之連結部中對 前述軸線垂直方向之厚度中最小值設為d(mm)，前述軸線 0 方向之纖絲長度設為L(mm)時，滿足下述式者。 D:0·02〜0·08(mm) 0. 01(mm) d/D=0.2 〜0·7 L=0·06〜0· 4(mm) 因具有圓所連結之截面形狀，該單絲係所謂之扁平 絲，其表面存在凹凸。 11 200824754 略圓形及/或略橢圓形之連結數為2〜6個，以卜5 個為佳。所連結之圓若為7個以上，纖絲表面之凹凸則變 平緩’用作球拍線之皮線使用時，球拍線表面之凹凸效果 (意即如後所述之優良擊球感）即變小。 ^ 可只與具有㈣大小與形狀之略圓形連結，盘幻、 形狀略有差異之略圓形連結亦無妨。另外，略圓形與略擴 圓形連結亦可。 ' 4結部可為相鄰之圓重疊形成之部分，或為連結不重 疊之圓之規定厚度（對前述軸線垂直方向之長度）及長度 (則述軸線方向之長度）之部分亦可。 D為連結前述截面形狀中各略圓形及/或略橢圓形中心 之軸線垂直方向之厚度中最大值，為〇 〇2〜〇 〇8咖，以 〇.〇3〜G.Oemm為佳。不滿請麵時，纖絲本身的厚度會 變薄’因此用作_線之皮線使料，球拍線無法得至^ •分之耐用性’另外，纖絲表面之凹凸會變平緩，作為球拍 線之皮線㈣時，球拍線表面之凹凸效果（意即如後所二 之優良擊球感）t變小。若超過〇.〇8麵，特別是做為= 構造之球拍線之皮線使用時，交又部的厚度會變大，難^ 得出緻密之構造，對球拍線粗度之物性也會降低。 乂 d為前述截面形狀中各略圓形及/或略橢圓形之連結呷 中對前述軸線垂直方向之厚度中最小值，必須具有 12 200824754 以上之厚度。若未滿0· 01 mm時，連結部的厚度則不足夠， 纖絲較容易分離，因此用作球拍線之皮線時，將成為起毛 之原因。 d/D為0· 2〜0· 7。若未滿0. 2時，纖絲容易分離，若 超過0· 7時，纖絲表面的凹凸將會變平缓，用作球拍線之 皮線使用時，球拍線表面之凹凸效果（意即如後所述之優 ‘良擊球感）會變小。 | L為前述軸線方向之纖絲長度，換言之，為本發明扁 平絲之寬度（長徑）。L為0· 06〜0· 4mm。未滿0· 06mm時， 纖絲表面無法得出充分之凹凸，用作球拍線之皮線使用 時，球拍線表面之凹凸效果（意即如後所述之優良擊球感） 也會變小。若超過0.4mm時，扁平度會變大，容易產生工 程通過性或操作性的問題。 圖1係表示本發明纖絲之一例剖面圖。於圖1中，纖 | 絲（1)之截面形狀為同樣大小之4個圓形呈直線狀連結之 變形截面形狀（以下稱圓形重疊形）。對連結各圓形中心之 轴線垂直方向之厚度中最大值D，相等於各圓之直徑。連 結部為相鄰的圓所重疊形成之部分，於連結部中，對前述 軸線垂直方向之厚度中最小值d於三個連結部中為相等。 圖2係表示本發明之纖絲之另一例剖面圖。於圖2中， 纖絲（2)之截面形狀為同樣大小之3個圓形各自不重疊， 13 200824754 透過具有規定厚度（對前述軸線垂直方向之長度）及長度 (剞述軸線方向之長度）之連結部，呈直線狀相連（以下 稱圓形不重疊形）。D相等於各圓之直徑。d於兩個連結部 中為相等。 圖3係表示本發明之纖絲之另一例剖面圖。於圖3中， 纖絲（3 )之截面形狀為2個橢圓形和1個圓形，以橢圓形 位於兩端、直線狀相連之變形截面形狀。D為位於正中央 ⑩ 位置之圓之直徑，連結部為相鄰的圓重疊所形成之部分，d 於兩個連結部中為相等。 如上所述，具有略圓形及/或略橢圓形呈線狀連結之 變形截面形狀之本發明單絲，於各圖中，係上下兩面具有 凹凸之扁平絲。 另外’本發明纖絲之粗度若以分特（dtex)表示，約以 7〜200dtex為佳。 鲁 如上所述，本發明之單絲表面具有適度的凹凸。此單 糸若用作埭拍線之皮線使用時，纖絲表面的凹部與芯線之 ^產生細微的間隙，結果使球拍線獲得柔軟性。另外， 將該纖4編織或纏繞於芯線，藉此而得之球拍線的表面具 有適度的四凸，因此可得到與羽毛球或球之適度摩擦。如 上所述’具有柔軟性、可得與羽毛球等之適度摩擦之球拍 線’擊球感相當優異。因此，使用本發明之纖絲，可獲得 200824754 擊球感良好之球拍線。 另外，因本發明之具有變形截面形狀之扁平纖絲，如 上所述使用作皮線之球拍線變細，可一舉解決以往纖絲製 造上的問題及球拍線製造上的問題。詳細内容如下所述。 本發明纖絲之樹脂雖無特殊限制，但以下述為佳：尼 龍6、尼龍66、尼龍12、尼龍610、尼龍612、尼龍MXD6 專聚醯胺樹脂、尼龍6/66、尼龍6/12等共重合聚醯胺樹 • 脂、聚乙烯對苯二甲酸酯（PET)、聚對苯二甲酸丁二醇酯 (PBT)、聚對笨二曱酸丙二醇酯（ppT)等之芳香族聚酯樹脂 或以該等為主成分之共重合聚酯樹脂、聚乳酸、聚丁二酸 丁二醇酯等據知為生分解聚醯胺之脂肪族聚酯樹脂、聚乙 烯、聚丙烯等之聚烯烴樹脂或共重合聚烯烴樹脂。 該等之中，特別以聚醯胺樹脂為佳。 另外，纖絲之樹脂分子量高、強度高且熱處理時之強 φ 度變化小者為佳。具體而言，樹脂之相對黏度（W r )為 3· 0以上者為佳。 本發明之纖絲中之樹脂，可依必要添加染料、耐熱劑、 耐光劑、平滑劑、柔軟劑等之添加劑或改質劑。另外，亦 可混合其他樹脂。 本發明纖絲之製造方法雖無特別限制，但可使用一般 的纖絲紡絲機，將紡紗口金孔之形狀，考慮所希望之纖絲 15 200824754 斷面形狀、所用纖絲材料之物性等而設計。 關於紡紗之條件，可適用所使用樹脂之一般押出條 件。雖依樹脂之種類而有所不同，通常溫度為2〇〇〜29〇它。 圖4係表示口金孔形狀例之平面模式圖。 圖4 (a)所示之口金（4)之孔（5)形狀，為相同大 小之4個圓形孔5a、5b、5c、5d透過具有規定厚度（對於 連結圓形中心之軸線垂直方向長度）及長度（前述軸線方 • 向之長度）之連通孔5e、5f、5g呈線狀相連之形狀。使用 圖4 (a)之口金（4)以一般纖絲紡絲機製造纖絲時，依 所用的纖絲材料適當地設定紡紗條件，藉此可得如圖1所 示之纖絲（1 )(圓形重疊形）或圖中未顯示之圓形不重叠 形之纖絲。 圖4(b)所示之口金（6)之孔（7)形狀，為相同大 小之4個圓形孔7a、7b、7c、7d呈直線狀並列的形狀（所 鲁謂四孔口金）。使用圖4 (b)之口金（6)，適當地設定紡 紗條件，紡出後使其融著，藉此可得如圖1所示之纖絲Π) (圓形重疊形）。 以下描述關於使用單絲紡絲機製造的情況。 由紡絲機之喷嘴（口金）所押出之熔融樹脂，在水等 之液體冷卻固化後，如常法加以延伸、熱處理、纏繞後成 為纖絲。冷卻溫度及延伸條件為依樹脂種類而選定適當條 200824754 件，雖依樹脂種類而有所不同，但冷卻溫度通常為10〜70 °C，延伸溫度為玻璃轉移點以上、熔點以下。於延伸處理 中，通常於溼熱及/或乾熱中被延伸至3〜8倍，再者，依 必要進行捲取定長或弛緩熱處理。 所得之纖絲物性，可藉由適當的口金設計與紡紗條 件，得到與圓截面之纖絲紡紗時幾乎同等之強度。 本發明纖絲之最佳強度為4. 5CN/dtex〜10 CN/dtex， | 伸度為25%〜40%左右。 藉由本發明之具有變形截面形狀之扁平纖絲，如上述 用作皮線使用之纖絲變細，所產生習知之纖絲製造問題得 以解決。意即，使一般截面為圓形之纖絲（以下稱為圓形 纖絲）變細時之纖絲製造問題得以解決。紡絲機中有適當 範圍之吐出量，在製造細圓形纖絲時，為了確保吐出量， 增加口金孔數以對應，但紡紗設備之紗行走根數是有限制 φ 的。另外，口金的尺寸或作業性等也會對根數造成限制。 另一方面，若吐出量變少，則紡絲機内的材料滯留時間變 長，會發生材料熱分解或加水分解，因此品質方面容易發 生纖度、不均或斷紗。一般而言，要有效率地製造出0. 06匪 以下之纖絲是很困難的。然而，若是本發明之纖絲可以將 2〜6根相當於0.06mm或以下的細圓形纖絲相連結之形狀 製於一根，使行走根數減少、吐出量增加。因此，可以更 17 200824754 有效率地製造纖絲。 其次說明關於本發明之球拍線。 本發明之球拍線，係以用作皮線之上述本發明纖絲編 織或纏繞於芯線者。 關於芯線雖無特殊限制，但可以使用單絲、複絲或兩 者組合之物。含有複絲時，以20〜300次/m左右捻出之 •線為佳，另外，主要為了賦予集束性，因此可依必要使用 I 樹脂加工過之芯線。 編織或纏繞時，可以用眾所皆知之編織機（例如16打） 或纏繞機。 本發明之理想狀況為，用作皮線編織或纏繞之纖絲， 融著於其他纖絲之接觸部，且用作皮線編織或纏繞之纖絲 與芯線，融著於皮線與芯線之接觸部。所謂融著，係指以 熱所熔融之用作皮線之其他纖絲，或熔融後之用作皮線之 纖絲與熔融後之芯線相互接著、硬化後之狀態。 芯線之熔點M(°C)與用作皮線之纖絲的熔點ra(°C)之 間的關係以為佳。M —m=0〜70(°C)為佳，再者，Μ — m=0 〜50(°C)更佳。 意即，用作皮線之纖絲之熔點，以與芯線素材之熔點 相同或低熔點為佳。理想的熔點差為0〜70°C，再者，理 想之熔點差為0〜50°C。 18 200824754 芯線之樹脂雖沒有特殊限制，但用為皮線使用纖絲之 樹脂可使用上述者。 芯線之熔點MCC)雖依所使用的樹脂而有所不同，以 200°C〜280 C範圍内為最佳。用作皮線之纖絲熔點瓜（它）， 雖依所使用的樹脂而有所不同，以15〇。(：〜28(Tc範圍内為 最佳。又，在此所謂之芯線熔點，意味與皮線所接觸部分 之烙點。例如，使用芯鞘或海島絲作為芯線時，意味鞘成 ⑩分或海成分之熔點，芯成分或島成分之熔點較皮線纖絲之 熔點m更高出70°C以上。 用作皮線之纖絲與芯線以同系統之樹脂素材為佳。特 別是芯線與皮線皆由聚醯胺樹脂構成為佳。例如，用作芯 線之纖維素材為尼龍6時，用作皮線之纖絲素材中，使用 尼龍6、尼龍6/66、尼龍6/12等之共重合聚酸胺樹脂特別 為佳。 • #由使用此等素材，在進行後述之減理工程（球拍 線製造方法中之工程⑽後，可得用作皮線編織或縷繞 之纖絲相互及/或與芯線融著之球拍線。藉由熱融著，皮 線與皮線、芯線與皮線強固地接著，因此不需後加工，也 可得到不易起毛且耐用性高之球拍線。 上述球拍線，其表面亦可更被覆有樹脂層。 再者’本發明之球拍線，可依必要施以^色、印字、 200824754 油劑施加等球拍線製造之必要加工。 以下進步说明關於本發明之球拍線之製造方法。 本發明之球拍線製造方法為包含工程（A) i方法，係 乍皮線之上述本發明纖絲編織或纏繞H線膚圍者。芯 線之溶點M(°C)與用作皮線之纖絲之熔點πιΓΟ之間的關 系乂 為佳。再者，M — 〜川（。㈡為传， 。（C)更佳再者，本發明之球拍線製造方法為包含工 程（B)’係將卫程⑴所得之球拍線以熔點㈣代熱處 理，將用作皮線所編織或纏繞之纖絲融著於其他纖絲之接 觸。P ’將用作皮線所編織或纏燒之纖絲與&線，融著於纖 絲與芯線之接觸部者。 於工程（A)中，芯線及用作皮線之纖絲可使用上述之 务關於將用作皮線之纖絲編織或纏繞之條件，雖沒有特 殊限制，但可使用眾所皆知之編織機或纏繞機。 ▲羽球拍、線、使用一般16打組型之製線機時，合检絲一 次供給一條本發明之纖絲，此乃為合理。 使用本發明之具有變形截面之扁平纖絲，可解決以往 之用作皮線使用之麟變細時球拍線製造上的問題。以一 般細圓形纖職覆芯線周面整體時，有必要增加作為合检 岐用之絲的根數。將多數根細絲合㈣線時，各纖絲不 —定會薄薄-層排列於被覆層，會經常產生鬆他、集束重 200824754 疊，然而，本發明之纖絲， 一體化之形狀，因此可安定 覆層。 所鄰接之細®形纖絲最初即為 獲知厚度报薄之組織構造之被 於工程（B)中，熱處理灸 目胁 馮用作皮線之纖絲熔點附近， 具體而言，以熔點m±10°c谁 入_p 1 ^ ^ 丁。.、、、處理並非將皮線纖絲完 融’而僅使表面敲解’使皮線纖絲之強伸度盡可能 不要降低，此為理想狀況。 I 者’以於張力下進行熱處理為佳。藉由於緊張狀態 下之熱處理’使球拍線的構造變緊，球拍線内的空隙也合 變少，因此可發揮使球拍線整體一體化的效果。 θ 關於具體的熱處理條件（溫度、時間、耐拉程度），雖 亦取決於皮線纖絲素材、芯線素材、熱處理裝置、加工速 度等’但以非接觸加熱為佳，溫度如前所述為m±i(rc左右， 時間為3〜300秒，延伸倍率為〇·95〜1〇8倍左右為佳， ⑩但並非以條件決定，適當地選擇依效果足夠可得之提高融 著與強伸度之條件。若條件不適當，會因融著不足或過度 融著·熔融而使強力降低。若延伸倍率降低，張力不足的 話’融著則不充分，緻密度亦無法提高。另一方面，延伸 倍率若是過高’所得之球拍線伸度就會變低，容易於球拍 邊緣產生斷線，球的飛行也會變差。在65%RH條件下，理 想的伸度為23%〜35%左右。 21 200824754 藉由上述之熱處理，皮線纖絲之交又部或接觸部及皮 線纖絲與芯線之接觸部融著接著。因此，即使不以接著劑 等樹脂加工’也可獲得充足之接著性、耐起毛性。另外， 於緊張狀態下施以熱處理，則變成空隙很少之緻密構造， 纖維之比率對球拍線的粗度提高。結果，若適#地選擇熱 處理條件，對於處理前球拍線之強伸度可細密地加以完 同時強力與伸度皆會提高。推測為此乃因為藉由球拍 φ 線一體化，伸張時（打球時）施以均等之應力。 另外，藉由其他皮線纖絲及皮線纖絲與芯線之熱融 著’即使於球拍線不施以通常實施之表面樹脂加工或塗層 等之表面樹脂被覆，亦可得出具有充分實用冑用性之球： 線。因此，相較於進行樹脂加工或塗層之情況，可得更纖 細之球拍線。再者，可得保持用作皮線之纖絲表面凹凸之 球拍線。 • . #然’本發明依必要進行樹脂被覆亦無妨。樹脂被覆 方法使用树爿曰溶劑溶液或樹脂乳膠之所謂樹脂加工方、去 祕塗層法之樹脂被覆係為可能’以薄被膜可得充分之效 果。 > 本發明中組合構造之球拍線，可p 以在纏繞後連 J侍顯著之效果，更加 理想適用。至於纏繞法，為使形狀安定化 續施以熱處理、使其融著者為佳。 22 200824754 依上1方法所得之球拍線，用作皮線編織或纏繞之纖 絲，融著扒甘 、/、他纖絲之接觸部，且用作皮線編織或纏繞之 纖絲與芯線，^# ㈤者於纖絲與芯線之接觸部。因此具有更緻 密之構造，红® ^ %果更獲得雖纖細但具耐用性之球拍線。 【實施例】 以下u實施例具體說明，但本發明並不限於該等實施 例。 ⑩〈實施例1 ：> 。線使用下述所不之芯、線Α，皮線使用下述所示之纖 絲I ’以進行球拍線之製造。 心線A ·將2根東麗（股）製尼龍6複絲（14〇〇dtex (T) 204纖絲（f)—型（τ) 781，熔點215°C )捻線之 樹脂加工品。 此時之樹脂加工，係將共重合尼龍（東麗（股）製 ⑩:CM別00、熔點128τ )之10wt%甲醇溶液對芯線施以塗層而 進行。 纖絲I ·使用尼龍6/66共重合樹脂（三菱工程塑料 (股）製、NOBAMID02030、熔點 2〇〇。〇,以 255〜27(rCi 纺紗溫度，如圖4 (a)所示，使用口金⑷將纖絲纺紗。 紡絲機使用單絲紡絲機（水冷方式、横型）。將所押出之絲 於25 C水中冷卻，接著在98 C之蒸氣中延伸為& 8倍，接 23 200824754 著以18〇t之乾熱延伸，總計延伸為5·5倍後，以6%之鬆 弛率施以他緩熱處理（175°C )後捲取。 所知纖絲I之截面形狀為圖1所示之形狀，D = 〇· 042mm ’ d = 〇· 〇2mm，L =0· 16mm，d/D=0· 48，粗細為 66dtex。另外，纖絲Ϊ之強力為4·7Ν，伸度為32·5%，強 度為 7. ICN/dtex。 (工程A) I 將用作皮線之纖絲〗以16打之製線機編織於芯線A周 圍，可得製線後之球拍線。 (工程B) 接著於製線後之球拍線，施以作為製線後加工之熱處 理。作為熱處理之200Ϊ溫度空氣中施以非接觸加熱，以 10m/分之速度以20秒處理後捲取，可得熱處理加工後之 球拍線。捲取侧速度為1〇· lm/分，延伸倍率為L 〇丨倍。 φ 〈實施例2> 芯線使用下述所示之芯線B,皮線使用與實施例i相 同之纖絲I，以進行球拍線之製造。 忍線B·將東麗（股）製尼龍6複絲（930T—140F —T781 ’熔點215 C )，與東麗（股）製尼龍β複絲（1400T —204F—T781 ,熔點215t： )各i根加以捻線之樹脂加工 品0 200824754 此時之樹脂加工，係以與上述芯線A之樹脂加工法相 同方法所進行’意即，將共重合尼龍（東麗（股）製、CM8〇〇〇、 熔點128。〇之l〇wt%曱醇溶液對芯線施以塗層而進行。 除了芯線使用芯線B外，以與實施例1相同之條件進 行工耘A，得出製線後之球拍線。再者，以與實施例工相 同之條件進行工程B，可得熱處理加工後之球拍線。 <實施例3> 芯線使用下述所示之芯線C，皮線使用與實施例i相 同之纖絲I，以進行球拍線之製造。 芯線C :將1根東麗（股）製尼龍6複絲（2100T— 306F—T781，熔點215°C )加以捻線之樹脂加工品。 此時之樹脂加工，係以與上述芯線A之樹脂加工法相 同方法所進行，意即，將共重合尼龍（東麗（股）製、CM8〇〇〇、 炼點128°C )之10wt%之甲醇溶液對芯線施以塗層而進行。 除了芯線使用芯線C以外，以與實施例1相同之條件 進行工程A，得出製線後之球拍線。再者，以與實施例1 相同之條件進行工程B，可得熱處理加工後之球拍線。 以顯微鏡觀察實施例1〜3所得之製線後之球拍線表 面，無法確認任一者皆皮線纖絲為整齊排列、無扭曲之部 分。所得之熱處理加工後之球拍線，各自與皮線及皮線接 觸部、皮與芯部之接觸部融著，也不會彎折。 200824754 實施例1〜3之製線後球拍線之物性及熱處理加工後 球拍線之物性各自如表1所示，不論何者，熱處理加工後 之球拍線的強力及伸度係藉由熱處理融著，較製線後之球 拍線為南。 另外，於實施例1〜3所得之熱處理加工後之球拍線， 施加矽系油劑後，以黏著劑25穿於球拍。任一者皆可以毫 無問題地穿上球拍。 <比較例1> 忽線使用與實施例1相同之芯線A，皮線使用如下所 述之纖絲Π，以進行球拍線之製造。 纖絲Π :將4根截面為圓形且粗細為〇· 〇43mm市售之 N66纖絲（東麗（股）製、17T — 1 一 3290、強力100CN、伸 度38%)合捻之纖絲。 又，以與實施例1所用之相同單絲紡絲機，嘗試纺紗 出0· 043mm直徑之圓形纖絲，但吐出量變少，纖度不均或 斷線，因此無法安定紡紗。比較例中所使用之市售纖絲係 以複絲紡絲機所製造者。 將用作皮線之纖絲Π以與實施例相同之16打製線機 編織於芯線A周圍，得出製線後之球拍線。 於製線後之球拍線，施以製線後加工之樹脂加工，得 出樹脂加工後之球拍線。關於樹脂加工，以特開 26 200824754 2005-304678號公報所提示之方法為準。意即，以尼龍66 塗層劑（尼龍66/盼/二曱苯於球拍線表面 塗布，重覆兩次加熱乾燥工程。 <比較例2> 魏使用與實施例2相同之芯、線B，皮線使用與比較 例1相同之纖絲Π，以進行球拍線之製造。 除了芯線使用芯線B外，以與比較例丨相同之方法， 籲各自得出製線後之球拍線與樹脂加工後之球拍線。 <比較例3> 芯線使用與實施例3相同之芯線c，皮線使用與比較 例相同之纖絲Π，以進行球拍線之製造。 除了心線使用心線C外’以與比較例1相同之方法， 各自得出製線後之球拍線與樹脂加工後之球拍線。 以顯微鏡觀察於比較例1〜3所得之各製線後之球拍 φ 線表面，可相當確認並非任一項必為4根平面排列，為在 重疊狀態下組成之部分。 實施例1〜3之製線後球拍線及熱處理加工後球拍線 之物性各自如表1所示。不論何者，於樹脂加工所使用的 溶劑酚也可使纖絲溶解，因此有樹脂加工後之球拍線的強 力比製線後之球拍線強力略低之傾向。另外，與直徑也使 用相同芯線之實施例相比’任一項皆略粗。 27 200824754 另外，於比較例1〜3所得各樹脂加工後之球拍線上， 施加上述矽系油劑後’以黏著劑25穿於羽球拍上。 <試打評價> 以三位羽球高段打者使用以實施例及比較例所得之球 拍線所製作之上述各羽球拍試打，並給與評價。使用比較 例3之細徑球拍線者，在試驗中，球拍線於早期斷裂，耐 -用性不足。 _ 比車父使用心線相同之球拍線（例如於實施例1所的之 球拍線與比較例1所得之球拍線）之球拍，即使是反拍、 打球音’評價都以使用實施例所得之球拍線之球拍為佳。 特別是使用在實施例中所得之球拍線之球拍，被評為擊球 感佳，具敏銳感，關於耐用性，也獲得比使用比較例中所 得之球拍線同等以上之評價。 <實施例4> 眷 芯線使用下述所示之芯線D，皮線使用下述所示之纖 絲ΠΓ，以進行球拍線之製造。 芯線D ··直徑〇· 46mm之尼龍6單絲（將尼龍6樹脂、 三菱工程塑料（股）製之NOBAMID01020紡紗者）。 纖絲ΠΙ :使用尼龍6/66共重合樹脂（三菱工程塑料 (股）製、NOBAMID02430、熔點192°C)，紡紗口金使用三 個同樣大小之圓形透過具有規定厚度及長度之連通孔呈線 28 200824754 狀相連形狀之口金孔，以255〜270°C之紡紗溫度紡紗纖 絲。纺絲機使用於實施例1所用相同之單絲紡絲機。將押 出之紗於25。(：之水中冷卻’接著於98。〇之蒸氣中延伸為 3·8倍，接著以170°C之乾熱延伸總計延伸為5·6倍後，以 7%之鬆弛率弛熱處理後捲取。 所得之纖絲瓜截面形狀為圖2所示之形狀（D = 〇· 05mm ’ 〇· 〇2mm ’ L= 〇· 17mm，d/D= 0· 4，粗 72dtex)。 _ 纖絲DI之強力為5.3N，伸度為33·8%，強度為7 4CN/dtex。 (工程A) 將用作皮線之纖絲ΠΙ以與實施例1相同之16打製線機 編織於芯線D周圍，得出製線後之球拍線。 (工程B) 接著於製線後之球拍線進行作為製線後加工之熱處 理。在熱處理時，於190°C之溫度空氣中進行非接觸加熱， 籲以10m/分之速度以20秒處理後捲取，得出熱處理加工後 之球拍線。捲取侧之速度為IQ· lm/分，延伸倍率為1 倍。 以顯微靜觀察所得之製線後之球拍線表面，皮線纖絲 為整齊排列，並未有扭轉部分。所得之熱處理加工後之球 拍線，係與皮線及皮線之交叉部、皮與芯部融著一體化， 並未彎折。 29 200824754 製線後球拍線之物性及熱處理加工後球拍線之物性各 自如表1所示。熱處理加工後球拍線之強力及伸度為輳由 熱處理融著，較製線後之球拍線為高。 另外，於所得之熱處理加工後球拍線上，施加上述矽 系油劑後，以黏著劑25穿於羽球拍上，進行與上述相同之 試打評價，結果反拍、擊球音良好，耐用性亦良好。 <實施例5 > 芯線使用下述所示之芯線E，皮線使用與實施例4相 同之纖絲ΠΙ，以進行球拍線之製造。 芯線E:直徑1· 〇5腿之尼龍6單絲（東麗·單絲（股 製、161Y1.05WX)。 (工程A) 將17根用作皮線之纖絲诅纏繞於芯線e周圍，得出掣 線後之球拍線。 & (工程B) 與工程A連續，進行作為製線後加工之熱處理。在熱 處理時’於190 C之溫度空氣中進行非接觸加熱，以抑和 處理後融著。其後以聚胺基甲酸醋1溶液施以表面行 脂加工，得出熱處理·樹脂加工後之球拍線。 製線後之球拍線及熱處理·樹脂加工後之球拍線之物 性如表1表示。該球拍線藉由依皮線之比較微細之表面凹 30 200824754 凸，與表面之聚胺基甲酸酯處理，用於網球、軟網，可表 現良好之擊球感。 【表1】 製線後之球拍線 製線之加工 加工後之球拍線 怒線 皮線 製線法 強力 伸度 直徑 熱處理 強力 伸度 抗拉 直徑 (N) (%) (mm) (N) (%) (N) (mm) 實施例1 A 纖絲I 編織 264 27.2 - 熱處理 271 31.4 321 0.757 實施例2 B 纖絲I 編織 241 26. 8 一 熱處理 249 29.4 315 0. 705 實施例3 C 纖絲I 編織 228 24.9 — 熱處理 235 26.7 273 0. 653 比較例1 A 纖絲n 編織 240 27.1 一 樹脂加工 231 26.1 259 0.768 比較例2 B 纖絲Π 編織 217 26.2 - 樹脂加工 209 25.0 254 0.714 比較例3 C 纖絲π 編織 210 26.5 — 樹脂加工 198 25.7 240 0.665 實施例4 D 纖絲瓜 編織 220 27.7 0. 69 熱處理 229 30.7 271 0.682 實施例5 E 纖絲in 纏繞 760 27.8 1.18 熱處理 +樹脂加工 764 29. 4 486 L202, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 2 mm or more and the difference in thickness d A is 0· 〇 3 mm or more. In the special opening 8 pin 25 No. (4), the airbag fiber is a synthetic fiber composed of a heat recombinable body, and the monofilament has i~3 convex portions in the longitudinal direction of the flat base, then half For the round protrusion, the length of the flat base is ==) and the ratio of the opposite side of the protrusion to the side of the semi-circular protrusion is 4/1~2/b and the single-filament fineness is 2 Ma 7§ /d or above. The strength is disclosed in Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. The continuous groove in the direction of 200824754, the depth of the groove is 3~11% of the thickness of the flat wire. Japanese Laid-Open Patent Publication No. 2002-293209 discloses a fiber for an airbag, which is an airbag fiber composed of a synthetic fiber multifilament, and a monofilament having a monofilament of the synthetic fiber multifilament of 2 to 7 dtex, a monofilament. The cross-sectional shape is a ratio of the maximum major axis length a to the maximum minor axis length b. The flattening ratio represented by a/b is a rectangular cross section of 1 · 5 to 8, and the maximum short axis length b of the monofilament and the minimum minor axis length c are The formula c/bxl00 indicates that the surface roughness ratio in the long axis direction is ❿. 80 to 100% of the people. [Problems to be Solved by the Invention] It is desirable to develop a racquet line, which relates to a racquet line in which a thread is woven or wound around a core line, which is more slender, has durability, and has a good hitting feeling. In order to obtain a slimmer racquet line, the core wire will be finer, or the filaments used as the skin line will be finer, or both will be finer. If the core wire is a multifilament, for example, the number of filaments constituting the multifilament is reduced to make the core wire finer. In either case, the amount of fiber (resin) used will be reduced, so the strength of the racquet line will also be lowered, which inevitably reduces durability. In particular, if the core wire which contributes to the reinforcing force is thinned, the strength is also greatly reduced. However, if the monofilament used as the sheath is tapered, the following problems may occur. First of all, the manufacture of fine monofilaments, in the case of conventional monofilament spinning machines, has many economic and technical problems. That is to say, in order to obtain the filament, the discharge amount of the material will be less, the productivity will be lowered, and the time for retaining the material in the spinning machine will be longer, and thus the material will be thermally decomposed or hydrolyzed, and the resulting racket line will be obtained. There will be many problems with physical and inequality. In addition, when the fine monofilament of the slanting machine is coated on the circumferential surface of the anger line, it is necessary to increase the number of the monofilaments used as the smashing wire in order to cover the entire circumference of the typhoon. Specifically, in the past, three monofilaments of the diameter of the shoulder are supplied, but if the diameter of the fine monofilament is 〇. 〇5 coffee or less, only three of them are likely to have voids, so it is necessary to have four or more. Combined supply. • When the number of mergings is increased, the filaments are not necessarily thinly arranged in a row on the coating layer, causing problems of slack and overlapping bundling. As described above, when a plurality of filaments are twisted and twisted, a problem arises in that the combined structure of the thickness is thinned. Further, if the monofilament is supplied after the wire is picked up, the thickness of the coating layer is increased, and as a result, the fine ball string is not obtained. The object of the present invention is to provide a filament suitable for a racquet line, which is slender, but has high strength and durability, and can provide a good sense of hitting the ball, and provides a racket line and a manufacturing method thereof. Although the racquet line is thin, it has high strength, durability, and a good hitting feeling. As a result of reviewing the above problems, the inventors have found that the cross-sectional shape of the filaments used as the sheath is changed to 2 to 6 deformed cross-sectional shapes which are slightly circular and/or slightly circularly connected in a line shape. A racket line that is strong, durable, and has a good sense of hitting. In addition, it will be used as the woven or wrapped knit of the leather thread, and it will be used as the contact part of other filaments, and it will be used as the woven or leather cord of the 200824754 winding, which is fused to the filament and The contact portion of the core wire, thereby obtaining a more detailed and durable racket line. The present invention includes the following inventions: (a) a ribbed wire filament having a cross-sectional shape of 2 to 6 deformed cross-sectional shapes which are slightly circular and/or slightly elliptical in a linear shape, and in the cross-sectional shape, the pair 2 The maximum of the thickness of the vertical direction of the axis of the six-semi-circular and/or slightly-shaped center is set to D (leg), and the vertical thickness of the aforementioned axis in the slightly circular and/or slightly elliptical joint portion When the minimum value is set to d (mm) and the length of the filament in the axial direction is set to 1 (wake up), the following formula is satisfied. D=0· 〇2~0· 08(mm) 0. 〇1 ( Mm) d/D=〇.2 ～0·7 L=0·〇6~0·4(mm) (2)—The racquet line is attached around the core wire to be used as the above-mentioned (1) (3) The racquet line described in (1) above, which is used as a woven or entangled filament of a leather thread, is hidden from the contact portion of other filaments, and is used as a leather thread. The m-reading silk and (4), the contact between the city silk and the anger line. (4) The above (1) "(3) the racket line, the paint point of the material 200824754 M (C) ' and the leather used as the leather line Melting point price), both Relationship μ (5) above (2) to (4) described in any one of the racket strings, and the covered wire which is chosen by the polyamide-based resin by. (6) The racket wire of any one of the above (2) to (5), wherein the surface of the racket wire is covered with a resin layer. (7) A method of manufacturing a racquet line, comprising the item (A), which is a woven or entangled filament of the above (1) for use as a thread. (8) The method for producing a racket wire according to the above (7), wherein the relationship between the melting point M (°C) of the core wire and the melting point m(r) of the filament used as the sheath is Μ 2 ra . (9) The method for producing a racket line according to the above (8), which comprises the item (B) of a racket line obtained by a project (person) having a melting point of 111:|:1 (). ^Heat treatment 'The above-mentioned filaments woven or wound as a sheath are fused to the contact portions of other filaments, and the filaments and cores woven or wound as the sheath are melted into the filaments. The contact part of the core wire. (10) A racket wire manufactured by any one of the manufacturing methods described in the above (7) to (9). [Effect of the Invention] According to the present invention, the cross-sectional shape of the filament used as the sheath is formed into 2 to 6 deformed cross-sectional shapes of 200824754 which are slightly circular and/or slightly elliptical in a line shape, and can be obtained in a slender shape. However, the racket line is high in strength, durable, and good in hitting. In addition, the filaments woven or wound by the leather thread are fused to the contact portions of the other filaments, and the filaments and core wires woven or wound as the leather threads are fused to the contact portions of the filaments and the core wires. This allows for a denser and more durable racket line. BEST MODE FOR CARRYING OUT THE INVENTION - The present invention will be described in detail below with reference to the drawings. I First, the filaments relating to the racket line of the present invention will be explained. The shape of the fibril cross section (the cross section perpendicular to the longitudinal direction of the filament) is 2 to 6 deformed cross-sectional shapes which are slightly circular (including a perfect circle) and/or slightly elliptical (including an elliptical shape). In the cross-sectional shape, the maximum value among the thicknesses perpendicular to the axis connecting the centers of the slightly circular and/or slightly elliptical centers is D (mm), slightly rounded and/or slightly elliptical in the joint portion. When the minimum value of the thickness in the vertical direction of the axis is d (mm), and the length of the filament in the direction of the axis 0 is L (mm), the following formula is satisfied. D:0·02~0·08(mm) 0. 01(mm) d/D=0.2 ～0·7 L=0·06~0· 4(mm) This sheet has a cross-sectional shape connected by a circle. Silk is a so-called flat wire with irregularities on its surface. 11 200824754 The number of links of slightly rounded and/or slightly elliptical is 2~6, preferably 5. If the number of the connected circles is seven or more, the unevenness of the surface of the filament is flattened. When used as a leather line for the racquet line, the uneven effect of the surface of the racquet line (that is, the excellent feeling of hitting the ball as described later) becomes small. ^ It can be used only with a slightly circular connection with a size and shape of (4), and a slightly circular connection with a slight difference in shape and shape. In addition, a slightly circular shape and a slightly expanded circular connection are also possible. The '4 junction portion may be a portion in which adjacent circles are overlapped, or may be a portion of a predetermined thickness (length in the direction perpendicular to the axis) and a length (the length in the axial direction) of the circle that does not overlap. D is the maximum value of the thickness in the vertical direction connecting the axes of the slightly circular and/or slightly elliptical centers in the cross-sectional shape, and is preferably 〇 〇 2 〇 〜 咖 8 coffee, preferably 〇 〇 3 〜 G. Oemm. When you are dissatisfied, the thickness of the filament itself will become thinner. Therefore, it is used as a ray-line material for the _ line. The racquet line cannot be obtained. ^The durability of the skein. In addition, the unevenness of the surface of the filament will be flattened as a racket. When the leather line (4) of the line is used, the uneven effect on the surface of the racket line (that is, the excellent hitting feeling as described later) t becomes small. If it exceeds the 〇.〇8 surface, especially when it is used as the leather line of the racquet line of the = structure, the thickness of the intersection will become larger, and it is difficult to obtain a dense structure, and the physical properties of the racquet line thickness will also be lowered. .乂 d is the minimum of the thicknesses in the vertical direction of the aforementioned axis among the slightly circular and/or slightly elliptical connecting ridges in the cross-sectional shape, and must have a thickness of 12 200824754 or more. If it is less than 0.01 mm, the thickness of the joint portion is not sufficient, and the filament is easily separated. Therefore, when it is used as a string of a racket thread, it will cause fluffing. d/D is 0·2~0·7. If it is less than 0.2, the filaments are easily separated. If it exceeds 0.7, the unevenness of the surface of the filament will be flattened. When used as a leather line for the racket line, the surface of the racket has a concave-convex effect (meaning The superior 'good shot feeling' described later will become smaller. | L is the filament length in the aforementioned axial direction, in other words, the width (long diameter) of the flat yarn of the present invention. L is 0·06~0·4mm. When it is less than 0·06mm, the surface of the filament cannot be obtained with sufficient unevenness. When used as a leather line for the racket line, the uneven effect of the surface of the racket line (that is, the excellent hitting feeling as described later) also becomes smaller. . When it exceeds 0.4 mm, the flatness becomes large, and it is easy to cause problems of engineering passability or workability. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing an example of a filament of the present invention. In Fig. 1, the cross-sectional shape of the fiber (1) is a deformed cross-sectional shape in which four circular shapes of the same size are linearly connected (hereinafter referred to as a circular overlapping shape). The maximum value D among the thicknesses in the direction perpendicular to the axis connecting the circular centers is equal to the diameter of each circle. The joint portion is a portion in which adjacent circles are overlapped, and among the joint portions, the minimum value d among the thicknesses in the direction perpendicular to the axis is equal to the three joint portions. Fig. 2 is a cross-sectional view showing another example of the filament of the present invention. In Fig. 2, the cross-sectional shape of the filament (2) is three circles of the same size and each does not overlap, and 13 200824754 has a predetermined thickness (length in the direction perpendicular to the axis) and length (length in the direction of the axis) The connecting portions are connected in a straight line (hereinafter referred to as a circular non-overlapping shape). D is equal to the diameter of each circle. d is equal in the two joints. Fig. 3 is a cross-sectional view showing another example of the filament of the present invention. In Fig. 3, the cross-sectional shape of the filament (3) is two elliptical shapes and one circular shape, and the elliptical shape is a deformed cross-sectional shape in which both ends are linearly connected. D is the diameter of a circle located at the center of 10, and the joint portion is a portion formed by overlapping adjacent circles, and d is equal in the two joint portions. As described above, the monofilament of the present invention having a deformed cross-sectional shape which is slightly circular and/or slightly elliptical in a linear shape is a flat yarn having irregularities on both upper and lower sides in each drawing. Further, the thickness of the filament of the present invention is preferably in the range of 7 to 200 dtex, as expressed by dtex. As described above, the surface of the monofilament of the present invention has moderate irregularities. When the sheet is used as a thread of a slap line, a slight gap is formed between the concave portion of the surface of the filament and the core wire, and as a result, the racquet line is made soft. Further, the fiber 4 is woven or wound around the core wire, whereby the surface of the racquet line has a moderate four convexity, so that moderate friction with the shuttlecock or the ball can be obtained. As described above, the racquet line which has softness and moderate friction with badminton is excellent in hitting feeling. Therefore, by using the filament of the present invention, a racquet line with a good hitting feeling of 200824754 can be obtained. Further, since the flat filament having the deformed cross-sectional shape of the present invention is tapered as described above, the use of the racquet line as the sheath can solve the problems in the conventional filament manufacturing and the problem in the manufacture of the racquet line. The details are as follows. The resin of the filament of the present invention is not particularly limited, but is preferably as follows: nylon 6, nylon 66, nylon 12, nylon 610, nylon 612, nylon MXD6 polyamide resin, nylon 6/66, nylon 6/12, etc. Aromatic poly-polyamide tree • Aromatic polycondensation of polyester, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), poly(p-propylene terephthalate) (ppT) An ester resin or a copolyester polyester resin containing such a main component, polylactic acid, polybutylene succinate or the like, which is known to be an aliphatic polyester resin which decomposes polyamine, a polyethylene, a polypropylene, etc. Polyolefin resin or co-heavy polyolefin resin. Among these, a polyamide resin is particularly preferred. Further, it is preferred that the resin of the filament has a high molecular weight, a high strength, and a small change in the strength of the φ degree during the heat treatment. Specifically, it is preferred that the relative viscosity (W r ) of the resin is 3.0 or more. The resin in the filament of the present invention may be added with an additive or a modifier of a dye, a heat-resistant agent, a light stabilizer, a smoothing agent, a softener, or the like as necessary. In addition, other resins may be mixed. The method for producing the filament of the present invention is not particularly limited, but a general filament spinning machine can be used, and the shape of the gold hole of the spinning port can be considered in consideration of the desired cross-sectional shape of the filament 15 200824754, the physical properties of the filament material used, and the like. And design. Regarding the conditions of the spinning, the general extrusion conditions of the resin to be used can be applied. Although it varies depending on the type of resin, it is usually 2〇〇~29〇. Fig. 4 is a plan view showing an example of a shape of a gold hole. The shape of the hole (5) of the gold (4) shown in Fig. 4 (a) is such that the four circular holes 5a, 5b, 5c, 5d of the same size have a predetermined thickness (the length in the vertical direction of the axis connecting the circular centers) The communication holes 5e, 5f, and 5g of the length (the length of the axial direction and the length of the direction) are connected in a line shape. When the filament is produced by a general filament spinning machine using the gold (4) of Fig. 4 (a), the spinning condition is appropriately set depending on the filament material used, whereby the filament as shown in Fig. 1 can be obtained (1). ) (circular overlapping shape) or a circular non-overlapping filament not shown in the drawing. The shape of the hole (7) of the gold (6) shown in Fig. 4(b) is a shape in which four circular holes 7a, 7b, 7c, and 7d of the same size are linearly arranged (four-hole gold is used). Using the gold (6) of Fig. 4 (b), the spinning conditions are appropriately set, and after spinning, they are melted, whereby the filaments as shown in Fig. 1 can be obtained (circular overlapping shape). The following description relates to the case of manufacturing using a monofilament spinning machine. The molten resin extruded from the nozzle (mouth gold) of the spinning machine is cooled and solidified by a liquid such as water, and then expanded, heat-treated, and entangled to form a filament as in the usual method. The cooling temperature and elongation conditions are selected according to the type of resin. The 200824754 piece is different depending on the type of resin. However, the cooling temperature is usually 10 to 70 ° C, and the elongation temperature is above the glass transition point and below the melting point. In the stretching treatment, it is usually extended to 3 to 8 times in moist heat and/or dry heat, and further, a winding length or a relaxation heat treatment is carried out as necessary. The resulting fibrillar properties can be obtained by the appropriate gold plating design and spinning conditions to obtain almost the same strength as the circular cross-section of the spun yarn. The optimum strength of the filament of the present invention is 4. 5CN / dtex ~ 10 CN / dtex, | The elongation is about 25% ~ 40%. By the flat filament having a deformed cross-sectional shape of the present invention, as described above, the filament used for the use of the sheath is tapered, and the conventional filament manufacturing problem is solved. That is, the problem of the filament production in the case where the filament having a circular cross section (hereinafter referred to as a circular filament) is thinned is solved. In the spinning machine, there is a proper range of discharge amount. When manufacturing fine round filaments, in order to ensure the discharge amount, the number of holes is increased to correspond, but the number of yarns of the spinning device is limited to φ. In addition, the size or workability of the gold deposit will also limit the number of roots. On the other hand, when the amount of discharge is small, the residence time of the material in the spinning machine becomes long, and thermal decomposition or hydrolysis of the material occurs, so that the quality is likely to cause fineness, unevenness, or yarn breakage. In general, it is very difficult to efficiently produce a filament of 0.06 inch or less. However, in the case of the filament of the present invention, 2 to 6 fine circular filaments corresponding to 0.06 mm or less can be joined to each other, and the number of walking can be reduced and the amount of discharge can be increased. Therefore, fibrils can be efficiently manufactured at 17 200824754. Next, the racket line relating to the present invention will be described. The racquet string of the present invention is a woven or wound yarn of the above-described filament of the present invention used as a sheath. Although the core wire is not particularly limited, a monofilament, a multifilament or a combination of the two may be used. When the multifilament yarn is contained, it is preferable to use a wire which is drawn at a temperature of about 20 to 300 times/m. Further, in order to impart the bundling property, the core wire processed by the I resin can be used as necessary. When weaving or winding, we can use a well-known knitting machine (for example, 16 dozen) or a winding machine. The ideal condition of the present invention is that the filaments used for the braiding or winding of the sheath are fused to the contact portions of the other filaments, and are used as the filaments and cores of the sheath braiding or winding, and are fused to the sheath and the core. Contact part. The term "melting" refers to a state in which other filaments which are melted by heat are used as a sheath, or a filament which is used as a sheath after melting and a core after melting are adhered to each other and hardened. The relationship between the melting point M (°C) of the core wire and the melting point ra (°C) of the filament used as the sheath is preferred. M - m = 0 to 70 (°C) is preferable, and further, Μ - m = 0 to 50 (°C) is more preferable. That is, the melting point of the filament used as the sheath is preferably the same as or lower than the melting point of the core material. The ideal melting point difference is 0 to 70 ° C. Further, the ideal melting point difference is 0 to 50 ° C. 18 200824754 The resin of the core wire is not particularly limited, but the above may be used as a resin which uses a filament for the sheath. The melting point MCC of the core wire varies depending on the resin to be used, and is preferably in the range of 200 ° C to 280 ° C. It is used as a fibril melting point melon (it), which varies depending on the resin used, to 15 〇. (: ~ 28 (Tc is the best range. Again, the so-called core melting point, which means the point of contact with the leather line. For example, when using the core sheath or the island silk as the core wire, it means that the sheath is 10 points or The melting point of the sea component, the melting point of the core component or the island component is higher than the melting point m of the sheath filament by 70 ° C or more. The filament and the core wire used as the sheath are preferably the same resin material of the system, especially the core wire and It is preferable that the sheath is made of a polyamide resin. For example, when the fiber material used for the core wire is nylon 6, the nylon material used as the sheath is nylon 6, nylon 6/66, nylon 6/12, or the like. It is particularly preferable to use a total of agglomerated polyamine resin. • # By using these materials, after performing the reduction engineering described later (the work in the method of manufacturing the racquet line (10), it can be used as a woven or entangled filament. And/or a racket wire that is fused with the core wire. By heat fusion, the leather wire is firmly adhered to the leather wire, the core wire and the leather wire, so that the racquet line which is not easy to fluff and has high durability can be obtained without post-processing. The above racquet line may be covered with a resin layer on its surface. The racquet line of the Ming can be processed as necessary by the racquet line of the color, the printing, the application of the oil, and the like. The following advancement describes the manufacturing method of the racquet line of the present invention. The racquet line manufacturing method of the present invention includes the engineering ( A) The i method, which is the above-mentioned filament woven or wound H-line skin of the present invention, the relationship between the melting point M (°C) of the core wire and the melting point πιΓΟ of the filament used as the sheath is Further, M — ～川(.(二)为传, (C) Better, the racquet line manufacturing method of the present invention is to include the engineering (B) 'the racquet line obtained by the Guardian (1) as the melting point (4) Substituting heat treatment, the filaments woven or entangled as leather threads are fused to the contacts of other filaments. P 'will be used as the filaments and & woven or entangled by the leather thread, fused to the filaments and The contact part of the core wire. In the engineering (A), the core wire and the filament used as the leather wire can use the above-mentioned conditions regarding the weaving or winding of the filament to be used as the leather wire, and although it is not particularly limited, it can be used. A well-known knitting machine or winding machine. ▲ badminton racket, line, use one In the case of a 16-type type of wire-making machine, it is reasonable to supply a filament of the present invention at a time. The use of the flat-shaped filament having a deformed section of the present invention can solve the conventional use of the skin as a sheath. When the tape is broken, the problem of the manufacture of the racquet line is as follows. When the entire circumference of the core wire is covered by a general thin circular fiber, it is necessary to increase the number of wires used for the inspection. When the majority of the filaments are combined with the (four) wire, the fibers are Silk does not - will be thin - layer arranged in the coating layer, will often produce loose, bundle weight 200824754 stack, however, the filament of the invention, the shape of the integration, so that the coating can be stabilized. The filament is initially known as the tissue structure of the thickness thinning in the engineering (B), and the heat treatment moxibustion is used as the filament near the melting point of the filament, specifically, the melting point m±10°c p 1 ^ ^ D. . . . , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , It is preferable that the heat treatment is performed under tension. Since the structure of the racket line is tightened by the heat treatment in the tension state, the gap in the racket line is also reduced, so that the entire racket line can be integrated. θ Regarding the specific heat treatment conditions (temperature, time, and tensile strength), it depends on the skin material, the core material, the heat treatment device, the processing speed, etc., but the non-contact heating is preferred, and the temperature is as described above. m±i (around rc, time is 3~300 seconds, the extension ratio is 〇·95~1〇8 times is better, 10 is not determined by conditions, and the appropriate selection depends on the effect to improve the fusion and strong If the conditions are not appropriate, the strength will be lowered due to insufficient melting or excessive melting and melting. If the stretching ratio is lowered and the tension is insufficient, the melting is insufficient and the density cannot be improved. If the extension ratio is too high, the resulting racquet line will become lower, and it will be easy to break the edge of the racquet, and the flight of the ball will also be worse. Under the condition of 65% RH, the ideal extension is 23%~35. 21 200824754 By the above heat treatment, the contact portion of the sheath filament or the contact portion and the contact portion of the sheath filament and the core wire are fused. Therefore, even if it is not processed by a resin such as an adhesive, it can be obtained. Adequate continuity, In addition, when heat treatment is applied under tension, the density becomes a dense structure with few voids, and the ratio of the fibers increases the thickness of the racquet line. As a result, if the heat treatment conditions are selected, the strength of the racket line before treatment is strong. The elongation can be finely finished and the strength and the elongation are improved. It is presumed that this is because the racquet is integrated by the racquet, and the stress is applied even when stretching (when playing). In addition, by other skin filaments And the thermal fusion of the sheath filament and the core wire. Even if the racquet line is not coated with a surface resin which is usually subjected to surface resin processing or coating, a ball having sufficient practical usability can be obtained: Compared with the case of resin processing or coating, a slender racket wire can be obtained. Further, a racket wire which is used as a surface roughness of the filament of the sheath can be obtained. It is also possible to coat the resin. The resin coating method is a so-called resin processing method using a resin solution or a resin emulsion, and a resin coating method using a degumming coating method is possible to obtain a sufficient effect by a thin film. > In the present invention, the racquet line of the combined structure can be more preferably applied even after the winding, and it is more preferable to apply the heat treatment to make the shape stable. 200824754 The racquet line obtained by the method 1 is used as a woven or entangled filament of a leather cord, which is fused with the contact portion of the stalk, and the filament and the core wire, ^ #(五) is the contact portion between the filament and the core wire. Therefore, it has a denser structure, and the red ® % fruit obtains a slender string which is slender but durable. [Embodiment] The following is a specific example, but the present invention The invention is not limited to the above embodiments. 10 <Example 1 :> The yarn used in the following cores and wires was used, and the filaments I' described below were used for the production of the racquet line. Heartline A · A resin processed product of two nylon (6) dtex (T) 204 filaments (f)-type (τ) 781 (melting point: 215 ° C) made of Toray. The resin processing at this time was carried out by coating a core wire with a 10 wt% methanol solution of a nylon (Toray Co., Ltd. 10: CM 00, melting point 128 τ). Filament I ·Use nylon 6/66 co-cohesive resin (Mitsubishi Engineering Plastics Co., Ltd., NOBAMID02030, melting point 2〇〇. 〇, 255~27 (rCi spinning temperature, as shown in Figure 4 (a), use The gold (4) spun the filament. The spinning machine uses a monofilament spinning machine (water-cooled, horizontal). The extruded silk is cooled in 25 C water, then extended to & 8 times in 98 C vapor. 23 200824754 With a dry heat extension of 18〇t, the total extension is 5.6 times, and then the heat treatment (175 ° C) is applied at a relaxation rate of 6%. The cross-sectional shape of the known filament I is The shape shown in Fig. 1 is D = 〇·042mm 'd = 〇· 〇2mm, L =0·16mm, d/D=0·48, and the thickness is 66dtex. In addition, the strength of the filament Ϊ is 4·7Ν, The elongation is 32.5%, and the strength is 7. ICN/dtex. (Engineering A) I The filament used as the leather thread is woven around the core wire A by a 16-thread knitting machine, and the racket can be obtained after the thread is made. (Engineering B) Next, the racquet line after the line is applied as a heat treatment for the post-line processing. As a heat treatment, 200 Ϊ temperature air is applied by non-contact heating at a speed of 10 m/min for 20 seconds. After the coiling, the racket line after the heat treatment can be obtained. The winding side speed is 1 〇·lm/min, and the stretching ratio is L 〇丨. φ <Example 2> The core wire uses the core wire B shown below, The filament I used in the same manner as in Example i was used to manufacture the racquet line. The line B. will be made of Toray (multiple strand) nylon 6 multifilament (930T-140F-T781 'melting point 215 C), and Toray ( Nylon β multifilament (1400T—204F—T781, melting point 215t: ) resin processed product of each of which is twisted. 200824754 The resin processing at this time is carried out in the same manner as the resin processing method of the core wire A described above. 'In other words, a total of nylon (Dongli (share) system, CM8 〇〇〇, melting point 128. 〇 l〇 wt% sterol solution is applied to the core wire. In addition to the core wire using the core wire B, The work A was carried out under the same conditions as in Example 1, and the racquet line after the line was obtained. Further, the work B was carried out under the same conditions as those of the embodiment, and the racquet line after the heat treatment was obtained. <Example 3> The core wire C shown below was used for the core wire, and the same filament 14 as that of Example i was used for the thread to fabricate the racquet line. Core C: A resin processed product in which a Toray 6 multifilament (2100T-306F-T781, melting point 215 ° C) was twisted. The resin processing at this time is carried out in the same manner as the resin processing method of the above-mentioned core A, that is, 10 wt% of the co-cohesive nylon (manufactured by Toray Co., Ltd., CM8 〇〇〇, refining point 128 ° C) The methanol solution is applied to the core wire by coating. Except for the use of the core wire C for the core wire, the work A was carried out under the same conditions as in the first embodiment, and the racquet line after the thread was obtained. Further, the work B was carried out under the same conditions as in Example 1 to obtain a racket line after the heat treatment. When the racquet line surface after the line-forming obtained in Examples 1 to 3 was observed under a microscope, it was not confirmed that either of the sheath filaments was aligned and not twisted. The obtained racquet lines after the heat treatment are fused with the contact portions of the skin and the skin, and the contact portions of the skin and the core, and are not bent. 200824754 The physical properties of the racket line after the line making of Examples 1 to 3 and the physical properties of the racket line after the heat treatment are as shown in Table 1. In either case, the strength and the elongation of the racket line after the heat treatment are melted by heat treatment. The racket line after the line is south. Further, after the heat treatment of the racket wires obtained in Examples 1 to 3, the lanthanum oil agent was applied, and then the adhesive 25 was applied to the racket. Either one can wear the racket without problems. <Comparative Example 1> The same core wire A as in Example 1 was used for the occurrence of the line, and the fiber thread was used as the sheath to prepare the racquet line. Filament Π: Four pieces of N66 filament (manufactured by Toray Co., Ltd., 17T-1 to 3290, strong 100CN, and 38% elongation) which are round and have a thickness of 〇·〇43mm. wire. Further, in the same single-filament spinning machine as used in Example 1, it was attempted to spun a circular filament having a diameter of 0·043 mm, but the amount of discharge was small, and the fineness was uneven or broken, so that the spinning could not be stabilized. Commercially available filaments used in the comparative examples were manufactured by a multifilament spinning machine. The filaments used as the sheath were woven around the core wire A in the same manner as in the embodiment, and the racquet line after the thread was obtained. After the racquet line after the line is formed, the resin processed after the line is processed to obtain the racquet line after the resin processing. Regarding the resin processing, the method disclosed in Japanese Laid-Open Patent Publication No. Hei. No. 26-200824754-2005-304678 is incorporated. That is, a nylon 66 coating agent (nylon 66/pan/biphenyl) was coated on the surface of the racket wire, and the heating and drying process was repeated twice. <Comparative Example 2> The same core and wire B as in Example 2 were used, and the same filaments as in Comparative Example 1 were used for the production of the racquet line. Except for the use of the core wire B for the core wire, in the same manner as in the comparative example, each of the racquet wires after the threading and the racquet wire after the resin processing were respectively obtained. <Comparative Example 3> The core wire c was the same as that of Example 3 except that the core wire was the same as that of the comparative example, and the racquet thread was produced. In the same manner as in Comparative Example 1, except for the core wire using the core wire C, the racquet line after the threading and the racquet line after the resin processing were each obtained. The surface of the racket φ line after the respective lines obtained in Comparative Examples 1 to 3 was observed by a microscope, and it was confirmed that not all of them were arranged in four planes, and they were composed in a state of being overlapped. The physical properties of the racket lines after the line making of Examples 1 to 3 and the racket lines after the heat treatment were as shown in Table 1. In either case, the solvent phenol used in the resin processing can also dissolve the filament, so that the strength of the racquet line after the resin processing tends to be slightly lower than the strength of the racquet line after the line is formed. Further, it is slightly thicker than the embodiment in which the same core wire is also used in diameter. 27 200824754 In addition, after applying the above-mentioned lanthanum oil agent to the racquet line after processing of each resin obtained in Comparative Examples 1 to 3, the adhesive 25 was applied to the badminton racket. <Trial evaluation> The above-mentioned respective racquets produced by the racquets obtained in the examples and the comparative examples were beaten and challenged by three high badminton players. Using the small diameter racquet string of Comparative Example 3, in the test, the racquet line was broken at an early stage, and the durability was insufficient. _ The racquet of the racquet line (for example, the racquet line of the first embodiment and the racquet line obtained in the first embodiment) is the same as the racquet line of the first embodiment, and even the back beat and the playing sound 'evaluation are obtained by using the embodiment. The racket of the racket line is better. In particular, the racquet using the racquet line obtained in the examples was rated as a good hitting feeling and a sharp feeling, and regarding the durability, an evaluation equal to or higher than that of the racquet line obtained in the comparative example was obtained. <Example 4> The core wire D shown below was used for the core wire, and the fiber thread shown below was used for the wire thread to manufacture the racket wire. Core wire D · · Diameter 〇 · 46mm nylon 6 monofilament (Nylon 6 resin, Mitsubishi Engineering Plastics Co., Ltd. NOBAMID01020 spinning machine). Filament ΠΙ: using nylon 6/66 co-recognition resin (Mitsubishi Engineering Plastics Co., Ltd., NOBAMID02430, melting point 192 °C), the spinning mouth gold uses three circular holes of the same size to pass through the communicating holes with the specified thickness and length. Line 28 200824754 A gold hole in the shape of a connected shape, spinning the filament at a spinning temperature of 255 to 270 °C. The spinning machine used the same monofilament spinning machine as used in Example 1. The yarn will be extruded at 25. (:cooling in water' followed by 98. The vapor in the crucible is extended to 3. 8 times, and then extended to a total of 5.6 times with a dry heat extension of 170 ° C, and then subjected to heat treatment at a relaxation rate of 7%. The obtained cross-sectional shape of the loofah is the shape shown in Fig. 2 (D = 〇 · 05mm ' 〇 · 〇 2mm ' L = 〇 · 17mm, d / D = 0 · 4, thick 72dtex). _ The strength of the filament DI It is 5.3 N, the elongation is 33.8%, and the strength is 7 4 CN/dtex. (Engineering A) The filament yarn used as the sheath is woven around the core wire D in the same manner as in Example 1. The racquet line after the line is drawn. (Engineering B) The racquet line after the line is then subjected to heat treatment as a post-line processing. During the heat treatment, non-contact heating is performed in the air at a temperature of 190 ° C, which is called 10 m. The speed of the minute/minute is taken up after 20 seconds, and the racket line after heat treatment is obtained. The speed of the winding side is IQ·lm/min, and the stretching ratio is 1 time. The surface of the racket line, the filaments of the leather line are neatly arranged, and there is no twisted part. The obtained racket line after heat treatment is the intersection with the leather line and the leather line. The skin and the core are integrated and not bent. 29 200824754 The physical properties of the racket line after the line and the physical properties of the racket line after the heat treatment are shown in Table 1. The strength and elongation of the racket line after heat treatment are 辏It is melted by heat treatment and is higher than the racquet line after the line is formed. Further, after the heat treatment is performed, the enamel oil agent is applied to the racquet line, and then the adhesive 25 is applied to the badminton racket to perform the same test as described above. Evaluation, the results of backhand, good hitting sound, and good durability. <Example 5> The core wire E shown below was used for the core wire, and the same use of the same fiber strand as in Example 4 was used to manufacture the racquet line. Core wire E: Nylon 6 monofilament of diameter 1·〇5 leg (Toray monofilament (shared, 161Y1.05WX). (Engineering A) 17 filaments of the filament used as the sheath are wound around the core e, The racquet line after the squall line is obtained. & (Engineering B) Continuously performs the heat treatment as the post-line processing with the engineering A. During the heat treatment, non-contact heating is performed in the temperature air of 190 C to suppress the treatment. After that, the surface is processed with a polyurethane resin solution to obtain a racket line after heat treatment and resin processing. The properties of the racket line after the line and the racket line after the heat treatment and resin processing are as follows. 1 indicates that the racquet line has a fine surface concave 30 200824754 convex by the skin line, and is treated with a polyurethane on the surface for tennis and soft nets, and can exhibit a good feeling of hitting. [Table 1] After the line is made, the racket line is processed and the racket line is angered by the line line method. The strength is extended. The diameter is heat-treated. The tensile strength is tensile (N) (%) (mm) (N) (%) (N (mm) Example 1 A Filament I Weave 264 27.2 - Heat Treatment 271 31.4 321 0.757 Example 2 B Filament I Braid 241 26. 8 A heat treatment 249 29.4 315 0. 705 Example 3 C Filament I Weave 228 24.9 - Heat Treatment 235 26.7 273 0. 653 Comparative Example 1 A Filament n Braid 240 27.1 Resin Processing 231 26.1 259 0.768 Comparative Example 2 B Filament Π Weaving 217 26.2 - Resin processing 209 25.0 254 0.714 Comparative Example 3 C Filament π weaving 210 26.5 - Resin processing 198 25.7 240 0.665 Example 4 D Filament woven 220 27.7 0. 69 Heat treatment 229 30.7 271 0.682 Example 5 E Filament in winding 760 27.8 1.18 Heat treatment + resin processing 764 29. 4 486 L202
【圖式之簡單說明】 第一圖係表示本發明之纖絲一例剖面圖。 第二圖係表示本發明之纖絲另一例剖面圖。 第三圖係表示本發明之纖絲另一例剖面圖。 第四圖係表示口金孔形狀例之平面模式圖。 • ·【符號說明】 1:纖絲 2:纖絲 3:纖絲 4: 口金BRIEF DESCRIPTION OF THE DRAWINGS The first drawing shows a cross-sectional view of a filament of the present invention. The second drawing shows a cross-sectional view of another example of the filament of the present invention. The third drawing shows a cross-sectional view of another example of the filament of the present invention. The fourth figure is a plan view showing an example of the shape of the gold hole. • · [Symbol Description] 1: Filament 2: Filament 3: Filament 4: Gold
5:孑L 5a:圓形孔 31 200824754 5b:圓形孔 5c:圓形孔 5d:圓形孔 5e:連通孔 5f:連通孔 5g:連通孔 6: 口金 7 a:圓形孔 7b:圓形孔 7c:圓形孔 7d:圓形孔5: 孑L 5a: circular hole 31 200824754 5b: circular hole 5c: circular hole 5d: circular hole 5e: communication hole 5f: communication hole 5g: communication hole 6: mouth gold 7 a: circular hole 7b: circle Shape hole 7c: round hole 7d: round hole