201103606 六、發明說明： 【發明所屬之技術領域】 本發明係關於硬式網球、軟式網球、羽毛球、壁球等 之球拍上所i设之球拍線與其製造方法及張設有其之球 【先前技術】 自先前以來’網球、羽毛球、壁球等之球拍用球拍線 大多使用由聚酿胺或聚s旨等合成纖維製單絲纖維及/或複絲 纖維所構成之球拍、線。先前之球拍線以圓形剖面為主體， 總的來說大多W揮合成纖維之特徵且耐久性優異之球拍 線。 於專利文獻1〜4等中有將球拍線之剖面變形為長圓、 橢圓、長方形等之提案。專利讀i提案有於熔融纺絲時 使用長方形之紡嘴，於製造長絲時先使變形。專利文獻2 亦提案有於熔融紡絲時使用啞鈐型之異形剖面紡嘴，於製 造長絲時先使變形。專利文獻3提案有如下之球拍線，其 係預先將芯線形成為粗寬度與細寬度，並於其周圍捲繞側 線。專利文獻4亦提案有如下之球拍線，其係預先將芯線 之剖面形成為橢圓形，並於其周圍捲繞側線。 然而，上述先前技術中於熔融紡絲時已使長絲之剖面 發生變形，故存在如下問題：於其後之捲繞側線之步驟、 熔融塗布之步驟等後加工步驟中容易出現撚合或扭曲，或 捲繞變得不均勻或不穩定。χ，於專利文獻2及3中提案 201103606 有經加撚（扭曲）加工之球拍線，但於該等文獻中係均勻 地進行撚合。於此種球拍線之情形時，若張設於球拍上則 球拍線之扁平面會均勻地分散，目此亦存在無法發揮扁平 化球拍線之特徵之問題。 先前技術文獻 專利文獻 專利文獻1 : 曰本特開 專利文獻2 : 曰本特開 專利文獻3 : 曰本特開 專利文獻4 : 曰本特開 2009-50660 號公報 2005-348851 號公報 2000-210396 號公報 昭60-77776號公報 【發明内容】 [發明所欲解決之問題] 本發明為解決上述先前之問題，提供可發揮扁平面之 特徵之球拍用球拍線與其製造方法及張設有其之球拍。 [解決問題之技術手段j 本發明之球拍用球拍線係含有合成纖維之球拍用球拍 線，其特徵在於：於球拍線形成後藉由加熱壓縮變形而使 球拍線之剖面扁平化，於某部分上具有壓痕，且上述經扁 平化之球拍線於實質上無撚之狀態下進行捲繞。 本發明之球拍用球拍線之製造方法係上述球拍用球拍 線之製造方法，其特徵在於：於將構成球拍線之主要合成 纖維之玻璃轉移點設為Tg (t )，且將熔點設為Tm (艽） 時’加熱至Tg (〇c )以上且Tm_10 rc )以下之溫度，於 4 201103606 具有既定間隔之輥間使球拍線壓縮變形，其後進行冷卻並 加以捲取。 本發明之球拍係張設有上述球拍用球拍線之球拍，並 特徵在於：於球拍打球面上，使上述球拍線之扁平面形成 主面，且具有因扭曲而產生之局部不均勻之凹凸部。 [發明之效果] 本發明之球拍用球拍線係如下：於形成合成纖維之球 拍線之後藉由加熱壓縮變形而使球拍線之剖面扁平化，於 某部分上具有壓痕’且上述經扁平化之球拍線於實質上無 撚之狀態下進行捲繞，藉此於張設於球拍上時，球拍線2 扁平面形成主且具有因扭曲而產生之局部不均句之凹 凸部，由此可發揮扁平面之特徵。即， j捉阿球或羽毛球 良好飛行之特反彈性）、及易藉由回旋而賦予旋轉之 特性（旋轉性，SpinabiHty)。又，亦可提高柔軟感。 本發明之球拍用球拍線之製造方法係如下.於將構成 球拍線之主要合成纖維之玻璃轉移點設為Tg(t)、，且將 ㈣時’加熱至TgR)以上且¥叫。C) :下：溫度’且於具有既定間隔之輥間使球拍線壓縮變 進行冷卻並加以捲取’藉此可高效率地製造經扁 干化之球拍線。 本發明之球拍於球拍打球面上，使上被抑上 .+ 迹球拍線之扁平 面形成主面，且具有因扭曲而產生之 °ι +均勻之凹凸 邛，藉此可提高反彈性、柔軟感與旋轉性。 201103606 【實施方式】 本發明係含有合成纖維之球拍線。作為該合成纖維並 未特別限定，可列舉：尼龍6、尼龍.66、尼龍46、尼龍61〇、 尼龍612、尼龍1 i、尼龍（2、尼龍9T、尼龍6丁等脂肪族 或半芳香族之熱塑性聚醯胺或該等之共聚物；聚對苯二甲 酸乙二酯、聚對苯二甲酸丁二酯、聚對笨二甲酸丙二酯等 熱塑性聚酯或共聚物；聚乳酸等脂肪族聚酯類❶其中作為 ^成纖維，較佳為脂肪^戈Μ香族之熱塑性聚酿胺或該 等之共聚物及熱塑性聚酯或共聚物，更佳為尼龍與熱塑性 聚酯。其原因係自強度、伸長率、成本之方面考慮，尼龍 與熱塑性聚酯較為理想。 ....... 1句平所、纖維 體、複絲纖維、於單絲纖維&上捲繞有側線等任意形態 作為球拍線之構成，較佳為於芯上捲繞有㈣者，進= 佳為於單絲纖維芯上捲繞有側線（較細之單絲纖維線）者 為使該等纖維-體化，較佳為使用樹脂黏合劑。又亦可 布包覆樹脂。較佳為例如藉由包覆樹脂來對在單絲纖維 上捲繞接著有側線（較細之單絲纖維線）者進行塗布而 之單絲纖維型的球拍線。 本發明之球拍用球拍線之特徵在於：於球 藉由加熱壓縮變形而使球拍線之剖面扁平化。 烘箱或乾燥機等。於將麵轉移點設為Tg(t) ·、、、 點設為罐）時’較佳之加熱溫度為Tg 且將BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a racket line provided on a racket of a hard tennis ball, a soft tennis ball, a badminton, a squash, etc., a manufacturing method thereof, and a ball provided thereon. [Prior Art] Since the racquet line for tennis racquets such as tennis, badminton, and squash has been used in the past, rackets and wires composed of monofilament fibers and/or multifilament fibers of synthetic fibers such as polystyrene or polystyrene have been used. The previous racket line has a circular cross section as a main body, and in general, most of the racket lines are characterized by synthetic fibers and excellent durability. Patent Documents 1 to 4 and the like have proposals for deforming the cross section of the racket line into an ellipse, an ellipse, a rectangle, and the like. The patent read i proposal uses a rectangular spun nozzle for melt spinning, which is first deformed when the filament is produced. Patent Document 2 also proposes the use of a dummy-shaped cross-section spinning nozzle for melt spinning, which is first deformed when the filament is produced. Patent Document 3 proposes a racquet line in which a core wire is formed into a thick width and a thin width in advance, and a side line is wound around the core wire. Patent Document 4 also proposes a racquet line in which a cross section of a core wire is formed in an elliptical shape in advance, and a side line is wound around the core wire. However, in the above prior art, the cross section of the filament has been deformed at the time of melt spinning, so that there is a problem that it is prone to twisting or twisting in the post-processing step such as the step of winding the side line, the step of melt coating, and the like. , or the winding becomes uneven or unstable. χ, proposed in Patent Documents 2 and 3 201103606 There is a racquet line that has been twisted (twisted), but it is uniformly kneaded in these documents. In the case of such a racket line, if it is placed on the racket, the flat surface of the racket line is evenly dispersed, and there is also a problem that the flattening of the racket line cannot be exhibited. PRIOR ART DOCUMENT PATENT DOCUMENT Patent Document 1 : 曰 特 专利 专利 专利 : : : : : : : : : : : : : 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 2009 [Problem to be Solved by the Invention] In order to solve the above-mentioned problems, the present invention provides a racket string for a racket which can exhibit the characteristics of a flat surface, a method for manufacturing the same, and a method for manufacturing the same racket. [Technical means for solving the problem] The racket line for racket of the present invention includes a racket line for a racket of synthetic fibers, which is characterized in that the cross section of the racket line is flattened by heating compression deformation after the formation of the racket line. The upper surface has an indentation, and the flattened racquet string is wound in a substantially flawless state. The method for producing a racquet string for a racquet according to the present invention is characterized in that the glass transition point of the main synthetic fiber constituting the racquet line is Tg (t ), and the melting point is set to Tm. (艽) When the temperature is 'heated to Tg (〇c) or more and Tm_10 rc ) or less, the racket line is compressed and deformed between the rolls having a predetermined interval at 4 201103606, and then cooled and taken up. The racquet racquet of the present invention is provided with the racquet of the racquet racquet line, and is characterized in that: on the racquet playing surface, the flat surface of the racquet line is formed as a main surface, and has a local uneven portion due to distortion. . [Effects of the Invention] The racket string for a racket of the present invention is as follows: after forming a racket line of synthetic fibers, the cross section of the racket line is flattened by heating and compression deformation, and an indentation is formed on a certain portion and the flattening is performed. The racquet line is wound in a substantially flawless state, whereby when the racquet is placed on the racquet, the flat surface of the racquet line 2 is formed as a main portion and has a concave portion of a partial unevenness due to the distortion. Play the characteristics of the flat face. That is, j catches A-ball or badminton, which is a good rebound for good flight, and is easy to impart rotation by spin (rotation, SpinabiHty). Moreover, the soft feeling can also be improved. The method for producing a racquet string for a racquet according to the present invention is as follows: the glass transition point of the main synthetic fiber constituting the racquet line is Tg(t), and the (fourth time is 'heated to TgR) or more. C): Lower: Temperature' and the racquet line is compressed between the rolls having a predetermined interval to be cooled and taken up, whereby the flattened racquet line can be efficiently manufactured. The racquet of the present invention is used on the racquet playing surface to make the upper surface of the racquet. The flat surface of the racquet line forms a main surface, and has a uniform unevenness due to distortion, thereby improving resilience and softness. Sense and rotation. [Embodiment] The present invention is a racket line containing synthetic fibers. The synthetic fiber is not particularly limited, and examples thereof include aliphatic or semi-aromatic such as nylon 6, nylon 66, nylon 46, nylon 61 〇, nylon 612, nylon 1 i, nylon (2, nylon 9T, nylon 6 butyl). Thermoplastic polyamine or copolymers thereof; thermoplastic polyester or copolymers such as polyethylene terephthalate, polybutylene terephthalate, poly(p-propylene terephthalate); polylactic acid and the like The polyester-based phthalocyanine is preferably a thermoplastic fiber-forming polyamine or a copolymer of the above-mentioned polyester and a thermoplastic polyester or copolymer, more preferably a nylon and a thermoplastic polyester. In terms of strength, elongation, and cost, nylon and thermoplastic polyester are ideal. .... 1 sentence flat, fibrous body, multifilament fiber, and side wire wound on monofilament fiber & Any form is used as the composition of the racquet line, preferably (4) is wound on the core, and it is preferred that the side fibers (finer monofilament fiber strands) are wound on the monofilament fiber core to make the fibers - the body is preferably a resin binder, or a resin may be coated. For example, a monofilament fiber type racquet line coated with a side wire (a finer monofilament fiber line) is wound on a monofilament fiber by coating a resin. The racquet racquet line of the present invention is characterized by : The ball is flattened by heating and compressing to deform the cross section of the racket line. In the oven or dryer, etc., when the surface transfer point is Tg(t) ·, ,, the point is set to the tank), the preferred heating temperature is Tg and will
Tm-10 ( C ) α下之溫度。該溫度亦可為環境溫度。成為 6 201103606 成形溫度之後，例如於具有既定間隔之輥間使球拍線壓縮 變形。藉由該處理而於球拍線之某部分上形成壓痕。 上述經扁平化之球拍線於實質上無撚之狀態下進行捲 取。所明實質上無撚係指每丨m長度中撚數為5次以下。 較佳為零。於實質上無撚之狀態下捲取時，以與一對輥相 同之方向或平行地具有捲取軸之捲取機來進行捲取。商用 求拍線可直接或成束使用。為了個人用顧客，亦可將球拍 線切斷為約1 〇〜丨3 m，於實質上無撚之狀態下倒卷並放入 包裝中。於專利文獻3中雖提案有經加撚加工之扁平剖面 之球拍線，但本發明者發現：若扁平度為丨丨以上，則即便 為無撚球拍線，亦會因通常之張設操作而導致球拍面上之 腸線產生扭曲。此處所謂扭曲係指球拍線之長徑部相對於 球拍面自大致垂直狀態扭曲約9〇度而成為水平之情形，反 之K平者成為垂直之情形等狀態。又，視情形亦有扭曲約 18〇度之情形，本發明中，於球拍面上含有ι〇〜ι〇〇個左右 之：種扭曲部位為佳。再者，若使用本發明之球拍線並以 通*之張5又方法來張設腸線，則扁平度越大，扭曲部位就 變得越夕可忒為儘管球拍線為無撚之狀態但於進行張設 夺仍出現扭曲之原因在於如下：（】）於自線圏狀之球拍線 解1時出現所6胃之解舒加撼；（2)於將線端插人孔眼時以 扭曲狀態插入並於未將扭曲恢復之狀態下直接拉伸固定； ()於’縱橫交差部對線施加張力時，線因張力而產生扭 曲扭曲邛位之個數若為丨〇個以上則旋轉性優異，若為^⑻ 個以下則會於整個球拍面上出現不均句之扭曲，故較佳。 7 201103606 張設有本發明之球拍用 上，蚀μ *+.押46姑 、線之球拍於球拍打球面 上使上述球拍線之扁平面形成主面，且具右… 生之局部不均句之凹凸部。太路s 具有因扭曲而產 槪，但於自捲取體解舒時會出 貿上係無 从士 a 出現解舒加撚，或在張設於球 拍時會不可避免地出現撚合及 1 π , b X杻曲藉此，球拍線之扁 平面形成主面，且具有 有因扭曲而產生之局部不均勻之凹凸 部。此處所謂主面係指擊打诂充 擎打球或羽毛球之面（打球面）之 5 0 %以上。 因球拍線之扁平面形成主面， 叫驭興球或羽毛球之接箱 面積增大，反彈性提高。又，因 U、，，生屙十化之球拍線之長 部分面向打球面’故由扭曲所產生之局部不均句之凹凸匈 易於賦予旋轉。如上所述，上述之由扭曲所產生之凹凸旬 存在有1 0〜1 00部位為佳。 本發明之球拍線與以加撚加工而均勻地進行撚合之对 拍線相比打球感優異。此常常是例如於拉緊本發明之球拍 線時，於如孔眼部般之彎曲部中因彎曲剛性而使長徑部成 為垂直於球拍面。另一方面，於織入有橫線之部分中球拍 線之軸回旋而使得球拍線於縱、橫向上均大致平行於球拍 面來張設。即，球拍線相對於球拍面具有於靠近孔眼處成 為垂直而於球拍面成為平行之傾向。本發明進而包含於球 拍面產生之扭曲部’即縱線或橫線成為垂直之部分、及扭 曲部位。若出現該扭曲則球拍線之長徑部會成為垂直於球 拍面立起之狀態’從而形成凹凸構造。該凹凸部分係將本 發明之球拍線張設於球拍上之情形之特徵，其使反彈性、 8 201103606 柔軟感及旋轉性提高。 另一方面，於經加撚加工之域私Αή ^"艰拍線之情形時，預先週 期性地扭曲，且扭曲數亦較多，妨&、Α , 权夕故無法保證球拍線於孔眼 部中亦成為垂直。λ ’球拍面、縱線與橫線之交差部亦混 在有各種狀態，故存在整體上被平均化即均—〖，球拍線 為爲平之特徵被抵消之傾向H可認為無法獲得如本 發明之球拍線般之優異效果。 上述經扁平化之球拍線之剖面的長徑/短徑之比（扁平 度）較佳為18之範圍。若為該範圍，則可進一步提 高反彈性與旋轉性。具體而言’若扁平度為u以上，則將 球拍線張設於球拍上之後’扭曲部位之個數變多，反彈性 之提高變得顯著。又’若扁平度為18以下，則會因球拍線 之扁平度適當而於球拍之張設性上不產生問題。更佳之扁 平度為^〜丨刀。本發明中於輥間進行壓縮成形之前之球拍 線二較佳為使用扁平度低於μ之大致圓形剖面之球拍線。 因右使用此種扁平度之球拍線，％自任__角度進行壓縮變 形均可獲得相同形狀之球拍線。 —上述球拍線較佳為如下’即包含：由單絲纖維所構成 之心線’上述芯線周圍之側線；以及使上述芯線與上述側 線—體化之塗布樹脂；且主要使上述芯線扁平化。 ^本發明之球拍用球拍線之製造方法係如下：於將構成 球拍線之主要合成纖維之玻璃轉移點設為Tg ( t：)，且將 ^點叹為Tm ( °C )時，加熱至Tg ( °C )以上且Tm-10 (。(：） 度且於具有既定間隔之報間使球拍線壓縮變 201103606 》其後進灯冷部並加以捲取。戶斤謂輥間之既定間隔係指 例如於供給球拍線之剖面直徑為i3G〜i35_之情形時 ::8〜。賴的間隔。通常較為理想的是，將該既定間隔 3定為供給球拍線之剖面直後之〇 55〜〇 ❺左右之間 3 使所獲得之球拍線之短徑為供給球拍線之剖面直徑 之 0.65 〜〇 95 俾；t 士· ,, • °左右上述中’構成球拍線之主要合成纖 維於存在芯線之㈣而料存在謂之情形 時係指含有50質量％以上之合成纖維。 以下使用圖式進行說明。圖1係本發明之__實施例之 經扁平化之球拍線之剖面圖。中央之尼龍製芯線（單絲纖 維）1大幅變形為長圓，其周圍之尼龍製側線（捲繞線）2 亦受變形。亦觀察到陷入芯線之部分。該等變形或 壓痕。此種壓痕係因於輥間進行壓縮成形而產生。周圍之 包覆樹脂3保持大致相同之厚度。該包覆樹脂3較佳為尼 龍樹脂等。如圖i所示，於經扁平化之球拍線之剖面圖中， 可觀察到（1)芯線之變形、（2)側線之變形、及⑴芯 線與側線之接觸部分之變形（主要是於芯線中之凹部變 形）。且，亦可於輥表面設置凹凸模樣。若於具有此種凹 凸模樣之制進行壓縮成形，則亦可將心模樣轉印至所 獲得之球拍線之表面。 圖2係用以製造本發明之一實施例之經扁平化之球拍 線的步驟說明圖，圖3表示爲平化之前之球拍線之剖面圖。 如圖2所示’自捲線體4將0 3所示之處理前 供給至加熱裝置6，使其通過具有既定間隔之輥几間 201103606 來進行扁平化變形處理後捲取至捲取冑11β如此獲得實質 上無撚之扁平化球拍線10。圖3中，12為芯線，υ為 14為包覆樹脂。 π ^’ 製造本發明之（經扁平化）球拍線之方法，與通常之 製造圓形剖面球拍線之方法相比，由於多出扁平化加工步 驟’因此可能會増加步驟數。但可藉由在製造通常之圓形 剖面球拍線之方法之樹脂加卫、油劑賦予、噴墨印 他加工步驟中同時進行扁平化加工，而不增加步驟數， 用以製造本發明之球拍線之方法具有卩下特徵。 ⑴加工穩定性較高’可適用於廣泛範圍。本發明之 製造方法中，#由加熱壓縮變形而使剖面扁平化來 拍線…匕，若於適當條件下進行加工，則可進行剖面形 狀、物性、外觀等方面穩定之（無偏差）加工。 化 例如於橢圓單絲纖維上捲繞側線之單絲纖維之 線之製造方法存在如下問題.進 长拍 1題·進仃捲繞時，因芯之曲率於 長徑部與短徑部處不同而使得捲繞狀態不穩定，其結果县 產生於側線間出現間隙或線重疊（凸起）等缺點。又 Π6線之塗布步驟中大多情形下必須使喷嘴孔為橢圓 形。然而，於球拍線Φ吝4 I 1 M w 111 、 生有扭曲"卩之情形時，當球拍綠 :噴嘴時存在易產生包覆樹脂之刮落或斷線等問題。如 ’二藉由先前之方法來穩定地製造扁平度大之芯線。 )打喊良好。㈣熟練者之 用本發明之球拍線來張設之球拍被選定為良好:：v 練者力出反彈性與旋轉性尤佳之評價。又，自所 201103606 獲得之資料亦可確認：於張設後之物體之落下反彈試驗中 反彈率增尚，以及藉由扁平化而使球與球拍線之摩擦增 大。因此，可認為實際之旋轉性係賦予有球拍面上之凹凸 效果之結果。 實施例 以下藉由實施例對本發明進行更具體之說明。再者， 本發明並非限定於下述之實施例。 (實施例1 )、（比較例1 ) 準備1根直徑1 mm之尼龍6之單絲纖維（芯線），及 25根直徑〇.丨丨5 mm之尼龍6之單絲纖維（側線），對芯線 表面賦予接著劑之後，將側線以撚數80次/m進行捲繞，並 於其周圍熔融塗布尼龍66作為包覆樹脂。所獲得之球拍線 5 (圖3)之直徑為丨.3〇〜1.31 mm (圓形剖面）。構成球拍 線之主要合成纖維（尼龍6)之玻璃轉移點（Tg)為4〇它、 熔點（Tm)為215。(：。將所獲得之球拍線5作為比較例1。 其次如圖2所示，將該球拍線5供給至加熱裝置6中 於加熱〇.5分鐘，然後使其通過間隙間隔（亦稱作間 隙規）為0.9 mm、l.Omn^ “咖之輥心凡間而變形 為扁平後，獲得圖丨所示之剖面為爲平線之球拍線1〇。所 獲得之扁平線之球拍線之剖面的長徑/短徑之比（扁平度） 於間隙間隔為0.9 mm之情形時為li67,於間隙間隔為 職之情形時為μ，於間隙間隔$ hl _之情形時為 1.2 8。將該等球拍線作為實施例 將所獲得之經扁平化之球拍線張設於硬式球拍之狀態 12 201103606 示於圖4〜圖6。圖4係使用在間隙間隔為1 ·丨mm之情形 時所獲得之球拍線來張設之硬式球拍，圖5係使用在間隙 間隔為1.0 mm之情形時所獲得之球拍線來張設之硬式球 拍’圖6係使用在間隙間隔為〇 · 9 mm之情形時所獲得之球 拍線來張設之硬式球拍。圖4〜圖6中，附上黑色標記之部 位係因扭曲而產生之局部不均勻之凹凸部分。無黑色標記 之部分係球拍線之扁平面形成主面之區域。因扭曲而產生 之凹凸部於圖4中存在有22個、於圖5中存在有58個、 於圖6中存在有68個。 將張設有上述所獲得之扁平度丨.44之球拍線的球拍給 5名網球手使用，自所有網球手獲得與圓形剖面之球拍線 (比較例1 )相比反彈性與旋轉性高之評價。 (實施例2)、（比較例2 ) 使用直徑1_31 mm之摻合有5質量％之聚乙烯之聚對苯 一甲酸乙二酯的單絲纖維。構成球拍線之主要合成纖維（聚 對苯二曱酸乙二酯）之玻璃轉移點（Tg)為7〇<t、熔點（Tm) 為260°C。將該球拍線作為比較例2。 其次如圖2所示，將該球拍線5供給至加熱裝置6中 於8〇t加熱0.5分鐘，然後使其通過間隙間隔（亦稱作間 隙規）為1.〇1^11或1.1111111之輥73、713間而變形為扁平後， 獲得剖面為扁平線之球拍線。所獲得之扁平線之球拍線之 剖面的長徑/短徑之比（爲平度），於間隙間隔為i〇mm2 障形時為1 ·72 ’於間隙間隔為丨.丨mm之情形時為丨。將 該等球拍線作為實施例2。 13 201103606 將所獲得之經扁平化之球拍線張設於硬式球拍之狀態 示於圖7〜圖8。圖7係使用在間隙間隔為hi爪爪之情形 時所獲得之球拍線來張設之硬式球拍，圖8係使用在間隙 間隔為1.0 mm之情形時所獲得之球拍線來張設之硬式球 拍。圖7〜圖8中附上黑色標記之部位係因扭曲而產生之局 部不均勻之凹凸部分。無黑色標記之部分係球拍線之扁平 面形成主面之區域。因扭曲而產生之凹凸部於圖7中存在 有13個、於圖8中存在有25個。 將張設有上述所獲得之扁平度丨.47之球拍線之球拍給 5名網球手使用，自所有網球手獲得與圓形剖面之球拍線 (比較例2)相比反彈性與旋轉性高之評價。 (實施例3)、（比較例3 ) 於單絲纖維中含有3島成分，島成分係準備摻合有1〇 質量％之聚對苯二曱酸乙二酯之尼龍6，海成分係準備2種 為尼龍6之圓形刮面之3島單絲纖維（直徑0 89 mm之芯 線及直徑0.195 mm之側線）。於丨根該3島單絲纖維（芯 線）表面上，以撚數85次/m來捲繞16根上述3島單絲纖 維（側線），並於其周圍塗布作為包覆樹脂之尼龍6。所獲 得之球拍線之剖面直徑為i.32 mme構成球拍線之主要合成 纖維（尼龍6)之玻璃轉移點（Tg)為4(TC、熔點（Tm) 為2151：。將該球拍線作為比較例3。 其次如圖2所示，將該球拍線5供給至加熱裝置6中 於80。(：加熱〇.5分鐘’然後使其通過間隙間隔（亦稱作間 隙規）為0.9 mm或1.0 mm之輥7a、7b間而變形為扁平後， 14 201103606 :得剖面為扁平線之球拍線。所獲得之扁平線之球拍線之 面的長徑/短徑之比（扁平度），於間隙間隔為随之 隋形時為i 42 ’於間隙間隔為i 〇随之情形時為Us。將 該等球拍線作為實施例3。 _將所獲得之經扁平化之球拍線張設於硬式球拍之狀態 不於圖9〜圖10。圖9係使用在間隙間隔為i 〇 mm之情形 時=獲侍之球拍線來張設之硬式球拍，圖1〇係使用在間隙 間隔為0.9 mm之情形時所獲得之球拍線來張設之硬式球 圖9〜圖1 〇中附上黑色標記之部位係因扭曲而產生之 局部不均勻之凹凸部分。無黑色標記之部分係球拍線之扁 平面形成主面之區域。因扭曲而產生之凹凸部分於圖9中 存在有81個、於圖1〇中存在有91個。 將上述所獲得之張設有扁平度丨42之球拍線之球拍給 5名網球手使用，自所有網球手獲得與圓形剖面之球拍線. (比較例3)相比反彈性與旋轉性高之評價。 (實施例4)、（比較例4 ) 準備1根直徑1 mm之尼龍6之單絲纖維（芯線）、及 23根直徑〇· 14 mm之尼龍6之單絲纖維（側線），對芯線 表面賦予接著劑之後，將側線以撚數8〇次/m來進行捲繞， 並於其周圍塗布尼龍66作為黏合包覆樹脂。所獲得之球拍 線5之直徑為1.30〜1.31 mm (圓形剖面）^構成球拍線之 主要合成纖維（尼龍6)之玻璃轉移點（Tg)為4〇〇c、炼 點（Tm)為215°C。將該球拍線作為比較例4。 其次如圖2所示，將該球拍線5供給至加熱裝置6中 15 201103606 於8(TC加熱0.5分鐘，然後使其通過間隙間隔（亦稱作間 隙規）為〇.9咖或Umm之輥7a、7b間而變形為扁平後， 獲得剖面為扁平線之球拍線。所獲得之騎線之球拍線之 剖面的長徑/短徑之比（扁平度），於間隙間隔為〇9 _之 情形時為U9,於間隙間隔為以職之情形時為136。將 該等球拍線作為實施例4。 將所獲得之經扁平化之球拍、線張設於硬式球拍上之狀 態示於圖u〜圖12。圖"係使用在間隙間隔為i g職之 情形時所獲得之球拍線來張設之硬式球拍，圖⑽使用在 間隙間隔為0.9 mm之情形時所獲得之球拍線來張設之硬式 求拍® 11〜圖i 2中附上黑色標記之部位係因扭曲而產生 之局部不均句之凹凸部分。無黑色標記之部分係球拍線之 扁平面形成主面之區域。因扭曲而產生之凹凸部分於圖H 中存在有32個、於圖12中存在有47個。 將上述所獲得之張設有扁平度136之球拍線之球拍給 5名網球手使用’自所有網球手獲得與圓形剖面之球拍線 (比較例4)相比反彈性與旋轉性高之評價。 (比較例5) 準備1根剖面為長徑⑶咖、短徑0 75 mm之長圓形 的尼龍6單絲纖維（芯線）、及25根直徑為〇.115麵之 =龍6之單絲纖維（側線），使用將尼龍6溶解於苯紛系 冷劑而成之接著劑，於芯線表面以撚數8〇次/m來捲繞接著 側線後使其乾燥。所獲得之球拍線之剖面為長徑⑸匪、 短徑1.03 mm (長圓）。所獲得之球拍線之剖面的長徑/短 16 201103606 控之比（爲平度）為L45°構成球拍線之主要合成纖維（尼 龍〇之玻璃轉移點（Tg)為40t、熔點（Tm)為2饥。 再者’該階段中，芯與侧線之接著產生不肖，又於扁平部 分，側線間之間隙較大。可認為其原因在於：由於芯之剖 面為扁平長圓$，因此於附著有接著劑之狀態、怎與側線 之壓接狀態、及捲繞角度等下不均勻且不穩定。 於所獲得之球拍線之周圍，使用橢圓形剖面之喷嘴來 塗布尼龍66作為點合包覆㈣。所獲得之塗布球拍線之剖 面為長徑1·47_、短徑丨训麵（長圓）。所獲得之塗布 球拍線之剖面的長徑/短徑之比（扁平度）為丨36。再者， 所獲得之塗布球拍線之塗布膜厚不均勻。 將所獲得之塗布球拍線張設於硬式球拍丨。於使用塗 布球拍線之情形時，產生起毛或部分剝離，3根中有i㈣ 斷。 將該球拍給5名網球手使用’自所有網球手獲得與實 施例1之球拍線相比反彈性與旋轉性低，易產生起毛、剝 落之評價。 至於實施例1及比較例i ’將加工條件（間隙間隔、加 熱溫度及時間、捲速）、所獲得之球拍線之剖自（尺寸及 扁平度）、所獲得之球拍線之純（強度、伸長率、中間 伸長率、S結節強度）、以及將所蒋彳異 村m筏侍之球拍線張設於腸線 時之特性（張設性、張設後之扭曲部位個數、擊打感覺） 匯總於以下之表1中。 17 201103606Temperature under Tm-10 (C) α. This temperature can also be ambient temperature. After the forming temperature of 6 201103606, for example, the racquet line is compression-deformed between rolls having a predetermined interval. An indentation is formed on a portion of the racket line by this process. The flattened racquet line is wound up in a substantially flawless state. It is understood that substantially no flaws mean that the number of turns per length of m is less than 5 times. Preferably it is zero. When being wound up in a substantially flawless state, the winding is performed by a coiler having a take-up shaft in the same direction as the pair of rolls or in parallel. Commercial demand lines can be used directly or in bundles. For personal use, the racquet string can also be cut to about 1 〇 to 丨 3 m, and rewinded and placed in a package in a substantially flawless state. In Patent Document 3, a racket line of a flat cross section which has been subjected to twisting processing has been proposed. However, the inventors have found that if the flatness is 丨丨 or more, even if there is no racquet string, it is caused by a normal opening operation. Causes distortion of the gut on the racket surface. Here, the term "twisting" refers to a state in which the long-diameter portion of the racquet line is twisted by about 9 degrees from the substantially vertical state with respect to the racket surface, and is inverted. Further, depending on the situation, there is a case where the distortion is about 18 degrees. In the present invention, the racquet surface contains ι〇~ι〇〇 or so: the twisted portion is preferred. Furthermore, if the racquet line of the present invention is used and the gut is opened by the method of opening the lap, the flatness is increased, and the twisted portion becomes a eve, although the racquet line is innocent, but The reason why the distortion is still present is as follows: ()) The solution of the 6 stomach is solved when the ball is taken from the line of the line, and (2) is twisted when the line is inserted into the hole. Insertion and direct stretching and fixing without restoring the distortion; () When the tension is applied to the line by the crosswise cross section, the number of twists and twists due to the tension is more than one or more. If it is ^(8) or less, the distortion of the uneven sentence appears on the entire racket surface, so it is preferable. 7 201103606 The racket with the present invention is used, the eclipse μ *+. 46 46 、, the line of the racquet on the racquet playing surface so that the flat surface of the racquet line forms the main surface, and has a right... The concave and convex part. Tailu s has calving due to distortion, but when it comes to self-winding, it will be unsuccessful in the trade, or it will inevitably appear in the racket. π , b X 杻 Thereby, the flat surface of the racquet line forms a main surface, and has a local unevenness due to distortion. The so-called main surface here refers to more than 50% of the surface of the hit or the badminton (playing surface). Because the flat surface of the racket line forms the main surface, the area of the box that is called the Xing Xing ball or the badminton is increased, and the rebound is improved. Further, because U,,, the long part of the racquet line of the sputum is facing the playing surface, the unevenness of the partial unevenness sentence generated by the distortion is easy to impart rotation. As described above, it is preferable that the above-mentioned unevenness due to the distortion exists in the range of 10 to 100. The racquet line of the present invention is superior to the racquet line which is uniformly twisted by twisting. This is often the case where, for example, when the racquet string of the present invention is tightened, the long diameter portion is made perpendicular to the racquet surface due to the bending rigidity in the curved portion such as the eye portion. On the other hand, in the portion in which the horizontal line is woven, the axis of the racquet is rotated so that the racquet line is stretched substantially parallel to the racquet surface in the longitudinal direction and the lateral direction. That is, the racquet line tends to be perpendicular to the racquet face and close to the racquet face with respect to the racquet face. The present invention further includes a twisted portion produced by the racquet surface, that is, a portion where the vertical line or the horizontal line becomes vertical, and a twisted portion. If this distortion occurs, the long diameter portion of the racquet line will be in a state of being erected perpendicularly to the racquet surface, thereby forming a concavo-convex structure. This concavo-convex portion is characterized by the fact that the racquet line of the present invention is stretched on the racquet, and the resilience, 8201103606 soft feeling and rotatability are improved. On the other hand, in the case of the 捻 拍 Αή Αή 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰 艰The hole also becomes vertical. λ 'the racquet surface, the intersection of the vertical line and the horizontal line are also mixed in various states, so there is a tendency to be averaged as a whole, that is, the tendency of the racquet line to be flat is canceled, and it can be considered that the present invention cannot be obtained. The racquet line has the same excellent effect. The ratio of the major axis to the minor axis (flatness) of the cross section of the flattened racquet line is preferably in the range of 18. If it is in this range, the resilience and the rotation can be further improved. Specifically, when the flatness is u or more, the number of twisted portions is increased after the racket line is stretched on the racket, and the improvement in resilience is remarkable. Further, if the flatness is 18 or less, there is no problem in the erection of the racket due to the flatness of the racket line. Better flatness is flat ~ ^ 丨 knife. In the present invention, the racquet line 2 before the compression forming between the rolls is preferably a racquet line having a flat circular shape with a flatness of less than μ. Since the racquet line of this flatness is used for the right side, the racquet line of the same shape can be obtained by compressing and deforming from the __ angle. The racquet line is preferably as follows: a core line composed of a monofilament fiber, a side line around the core wire, and a coating resin for forming the core wire and the side wire; and mainly flattening the core wire. The manufacturing method of the racket line for racket of the present invention is as follows: when the glass transition point of the main synthetic fiber constituting the racket line is Tg (t:), and when the point is sighed to Tm (°C), it is heated to Tg ( °C ) or more and Tm-10 (. (:) degree and compressing the racket line between the newspapers with a predetermined interval to become 201103606" and then enter the cold part of the lamp and take it up. The household is the predetermined interval between the rolls. For example, when the cross-sectional diameter of the supply racquet line is i3G to i35_: 8 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 ❺ between the left and right sides 3, the short diameter of the obtained racquet line is 0.65 ~ 〇 95 剖面 of the cross-sectional diameter of the supply racquet line; t 士 ·,, ° ° above the above-mentioned 'the main synthetic fiber constituting the racket line in the presence of the core wire (4) In the case where the material is present, it means a synthetic fiber containing 50% by mass or more. The following description will be made using the drawings. Fig. 1 is a cross-sectional view of the flattened racket line of the embodiment of the present invention. The core wire (monofilament fiber) 1 is greatly deformed into a long circle The nylon side wire (winding wire) 2 around it is also deformed. Part of the core wire is also observed. These deformations or indentations are caused by compression molding between the rolls. The resin 3 is maintained to have substantially the same thickness. The coating resin 3 is preferably a nylon resin or the like. As shown in Fig. i, in the cross-sectional view of the flattened racket line, (1) deformation of the core wire can be observed, (2) The deformation of the side line and (1) the deformation of the contact portion between the core wire and the side wire (mainly the deformation of the concave portion in the core wire), and the concave-convex pattern may be provided on the surface of the roller. If compression molding is performed on the system having such a concave-convex pattern, The heart pattern can also be transferred to the surface of the obtained racquet line. Fig. 2 is a step-by-step illustration of a flattened racquet line for fabricating an embodiment of the present invention, and Fig. 3 is a racquet before flattening. A cross-sectional view of the line. As shown in Fig. 2, the self-winding body 4 is supplied to the heating device 6 before the treatment indicated by 0 3, and is subjected to flattening deformation treatment by a plurality of rolls of 201103606 having a predetermined interval, and then taken up to The coil 胄11β is obtained in this way The flattened racquet string 10 is substantially flawless. In Fig. 3, 12 is a core wire, and υ 14 is a coating resin. π ^' The method of manufacturing the (flattened) racquet line of the present invention, and manufacturing a circular shape in general Compared to the method of sectioning the racket line, the number of steps may be increased due to the extra flattening processing step. However, the resin can be applied by the method of manufacturing the usual circular section racquet line, the oil agent, and the ink jet printing. In the processing step, the flattening process is performed at the same time without increasing the number of steps, and the method for manufacturing the racquet line of the present invention has the underarm feature. (1) The processing stability is high', and can be applied to a wide range. In the manufacturing method of the present invention ###################################################################################### For example, the method for manufacturing a thread of a monofilament fiber on which a side wire is wound on an elliptical monofilament fiber has the following problems: In the case of a long stroke, the curvature of the core is different between the long diameter portion and the short diameter portion. As a result, the winding state is unstable, and as a result, the county is disadvantageous in that gaps or line overlaps (bumps) occur between the side lines. In the coating step of the Π6 line, in many cases, the nozzle hole must be made elliptical. However, in the case of the racket line Φ 吝 4 I 1 M w 111 and the distortion of the racquet, when the racquet is green: there is a problem that the coating resin is liable to be scraped or broken. For example, the core wire having a large flatness is stably produced by the prior method. ) shouting good. (4) Skilled person The racket which is set by the racket line of the present invention is selected as good: :v The trainer exerts an evaluation of rebound and rotation. Also, the information obtained from 201103606 can also be confirmed: the rebound rate increases in the falling rebound test of the object after the installation, and the friction between the ball and the racket line is increased by flattening. Therefore, it can be considered that the actual rotatability is a result of the effect of the unevenness on the racquet surface. EXAMPLES Hereinafter, the present invention will be more specifically described by way of examples. Furthermore, the invention is not limited to the embodiments described below. (Example 1), (Comparative Example 1) A monofilament fiber (core wire) of nylon 6 having a diameter of 1 mm and 25 monofilament fibers (side wires) of nylon 6 having a diameter of 〇.5 mm were prepared. After the surface of the core wire was given an adhesive, the side wire was wound at a number of turns of 80 times/m, and nylon 66 was melt-coated around it as a coating resin. The diameter of the obtained racquet line 5 (Fig. 3) is 丨.3〇~1.31 mm (circular cross section). The main synthetic fiber (nylon 6) constituting the racket wire has a glass transition point (Tg) of 4 Å and a melting point (Tm) of 215. (: The obtained racket line 5 is taken as Comparative Example 1. Next, as shown in Fig. 2, the racket line 5 is supplied to the heating device 6 for heating for 5 minutes, and then passed through the gap interval (also referred to as The gap gauge is 0.9 mm, l.Omn^ "The roll of the coffee roll is deformed into a flat shape, and the racquet line of the flat line shown in Fig. 1 is obtained. The racquet line of the flat line obtained is obtained. The ratio of the long diameter to the short diameter of the section (flatness) is li67 when the gap interval is 0.9 mm, μ when the gap interval is in service, and 1.2 8 when the gap interval is $ hl _. The racquet line is used as an embodiment to stretch the obtained flattened racquet line to the state of the hard racquet 12 201103606, which is shown in Fig. 4 to Fig. 6. Fig. 4 is used when the gap interval is 1 · 丨 mm The hard racket that was obtained by the racket line was obtained. Figure 5 is a hard racket that was set up using the racket line obtained when the gap interval was 1.0 mm. Figure 6 is used when the gap interval is 〇·9 mm. The hard racket that is drawn from the racket line obtained at the time. In Figure 4~6, the black is attached. The part recorded is a partially uneven portion due to distortion. The portion without the black mark is the area where the flat surface of the racquet line forms the main surface. The uneven portion due to the distortion has 22 in Fig. 4 There are 58 in Figure 5 and 68 in Figure 6. The racket of the racket line with the flatness of 丨.44 obtained above is used by 5 tennis players, obtained from all tennis players and rounded. The racket line of the cross section (Comparative Example 1) was evaluated in comparison with the high resilience and the rotatability. (Example 2), (Comparative Example 2) Poly(p-phenylene) having a diameter of 1 to 31 mm and blended with 5 mass% of polyethylene was used. Monofilament fiber of ethylene formate. The main synthetic fiber (polyethylene terephthalate) constituting the racquet line has a glass transition point (Tg) of 7 Å < t and a melting point (Tm) of 260 °C. This racket line was used as Comparative Example 2. Next, as shown in Fig. 2, the racket wire 5 was supplied to the heating device 6 and heated at 8 Torr for 0.5 minutes, and then passed through a gap interval (also referred to as a gap gauge) to be 1 〇1^11 or 1.1111111 between the rolls 73, 713 and deformed into a flat shape, the profile is a flat line The ratio of the long diameter to the short diameter of the cross section of the racquet line of the obtained flat line (flatness) is 1 · 72 ' when the gap interval is i 〇 mm 2 and the gap interval is 丨. 丨 mm In the case of the case, the racquet line is taken as the second embodiment. 13 201103606 The state in which the flattened racquet string obtained is set in the hard racquet is shown in Fig. 7 to Fig. 8. Fig. 7 is used in the gap interval. The hard racket is provided for the racket line obtained in the case of the hi claw, and Fig. 8 is a hard racket which is set by using the racket line obtained when the gap interval is 1.0 mm. The portions to which the black mark is attached in Figs. 7 to 8 are uneven portions which are uneven due to the distortion. The portion without the black mark is the area where the flat surface of the racquet line forms the main surface. The uneven portion due to the distortion has 13 in Fig. 7 and 25 in Fig. 8. The racket of the racket line with the flatness of 丨.47 obtained above was used by five tennis players, and the rebound and rotation were higher than that of all the tennis players obtained from the racket line of the circular section (Comparative Example 2). Evaluation. (Example 3), (Comparative Example 3) The three-island component was contained in the monofilament fiber, and the island component was prepared by blending nylon 6 of polyethylene terephthalate in an amount of 1% by mass, and the sea component was prepared. The two types are 3 island monofilament fibers of a circular scraping surface of nylon 6 (core wire with a diameter of 0 89 mm and a side wire with a diameter of 0.195 mm). On the surface of the three island monofilament fibers (core), 16 sheets of the above-mentioned three-island monofilament fibers (side lines) were wound at a number of times of 85 times/m, and nylon 6 as a coating resin was applied around the same. The obtained racquet line has a cross-sectional diameter of i.32 mme. The main synthetic fiber (nylon 6) constituting the racquet line has a glass transition point (Tg) of 4 (TC, melting point (Tm) of 2151:. Example 3. Next, as shown in Fig. 2, the racquet line 5 is supplied to the heating device 6 at 80. (: heating for 55 minutes' and then passing the gap interval (also referred to as a gap gauge) to 0.9 mm or 1.0. After the mm rolls 7a, 7b are deformed into flat, 14 201103606: the racket line of the flat line is obtained. The ratio of the long diameter to the short diameter (flatness) of the surface of the racket line of the obtained flat line is in the gap. When the interval is the same, i 42 ' is the interval between the gaps i and the case is Us. The racquet line is taken as the embodiment 3. _ The obtained flattened racket line is set on the hard racket The state is not shown in Fig. 9 to Fig. 10. Fig. 9 is a hard racket which is set up when the gap interval is i 〇 mm = the racket line to be served, and Fig. 1 is used in the case where the gap interval is 0.9 mm. The hard ball that is obtained by the racquet line obtained at the time is shown in Figure 9~Fig. The partially uneven portion formed by the curved portion. The portion without the black mark is the region where the flat surface of the racquet line forms the main surface. The uneven portion due to the distortion exists in Fig. 9 and exists in Fig. 1 There are 91. The racket of the racquet line with the flatness 丨42 obtained above is used by 5 tennis players, and the racquet line with the circular section is obtained from all the tennis players. (Comparative Example 3) Evaluation of high rotatability. (Example 4), (Comparative Example 4) One monofilament fiber (core wire) of nylon 6 having a diameter of 1 mm and 23 monofilament fibers of nylon 6 having a diameter of 14 mm were prepared. (Side line), after the adhesive is applied to the surface of the core wire, the side wire is wound with a number of turns of 8 times/m, and nylon 66 is applied around it as an adhesive coating resin. The diameter of the obtained racket wire 5 is 1.30. ~1.31 mm (circular cross section) ^The glass transition point (Tg) of the main synthetic fiber (nylon 6) constituting the racket line is 4〇〇c, and the refining point (Tm) is 215°C. The racket line is used as a comparative example. 4. Next, as shown in FIG. 2, the racquet line 5 is supplied to the heating device 6 15 2011036 06 At 8 (the TC is heated for 0.5 minutes, and then it is deformed into a flat shape by a gap interval (also referred to as a gap gauge) between the rolls 9a and 7b of the 咖.9 coffee or Umm, and a racquet line having a flat line is obtained. The ratio of the long diameter to the short diameter (flatness) of the cross section of the racquet line of the obtained riding line is U9 when the gap interval is 〇9 _, and 136 when the gap interval is for the job. The racquet line is used as the embodiment 4. The state in which the flattened racquet and the line are obtained on the hard racquet is shown in Fig. u to Fig. 12. The figure is used when the gap interval is ig. The hard racquet is obtained by the racquet line. The figure (10) is used to set the hard racquet of the racquet line obtained when the gap interval is 0.9 mm. The concave and convex part of the partial unevenness sentence produced by the distortion. The portion without the black mark is the area where the flat surface of the racquet line forms the main surface. The uneven portion due to the distortion has 32 in the figure H and 47 in the figure 12. The racquet of the racket line having the flatness of 136 obtained above was given to five tennis players using 'evaluation of the rebound and rotation from the tennis racquet line of the circular section (Comparative Example 4) from all the tennis players. . (Comparative Example 5) One nylon 6 monofilament fiber (core wire) having a long diameter (3) coffee and a short diameter of 0 75 mm, and 25 monofilaments having a diameter of 〇.115 face = dragon 6 were prepared. The fiber (side line) was prepared by dissolving nylon 6 in a benzene-based refrigerant and winding it on the surface of the core wire at a number of 8 turns/m to form a side line, followed by drying. The obtained racquet line has a long diameter (5) 匪 and a short diameter of 1.03 mm (long circle). The long diameter/short length of the obtained racquet line section 201103606 The control ratio (flatness) is L45° The main synthetic fiber constituting the racquet line (the glass transition point (Tg) of nylon 〇 is 40t, and the melting point (Tm) is 2 hunger. In addition, in this stage, the core and the side line are inconsistent, and in the flat part, the gap between the side lines is larger. It can be considered that the reason is that since the core has a flat long circle of $, it is attached The state of the subsequent agent, how it is in contact with the side line, and the winding angle are uneven and unstable. Around the obtained racquet line, the nozzle of the elliptical cross section is used to coat the nylon 66 as a point coating (4) The obtained coated racquet line has a long diameter of 1.47 _ and a short diameter 丨 training surface (long circle). The ratio of the long diameter to the short diameter (flatness) of the obtained racquet line is 丨36. The coating film thickness of the obtained coated racquet line is not uniform. The obtained coated racquet string is stretched on the hard racquet 丨. When the racquet line is applied, fluffing or partial peeling occurs, and i (four) breaks among the three. Give the racket to 5 nets The use of 'hands from all tennis players is lower than the racquet line of the first embodiment, and the rebound and rotatability are low, and the evaluation of fluffing and peeling is easy. As for the first embodiment and the comparative example i, the processing conditions (gap interval, heating temperature) And time, roll speed), the obtained racquet line from the (size and flatness), the pureness of the racquet line obtained (strength, elongation, intermediate elongation, S-nodular strength), and will be different The characteristics of the squash line of the village 筏 筏 设 ( ( ( ( ( ( ( 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 2011 17 17 2011 17 17
比較例1 (扁平化前） 實施例1 加工 間隙間隔（mm) 1.1 1.0 0.9 條件 加熱溫度及時間 一 80°C ，0.5 分鐘 倦迷（m/分） _ 4 尺寸（mm) 短徑 1.30 1.12 1.03 0.94 則面 萇徑 1.31 1.43 1.48 1.57 扁平度 長徑/短徑 ^ 1.01 1.28 1.44 1.67 強度（kg) 83.7 80.7 81.0 80.5 物性 伸長率（％) 34.1 32.5 31.1 33.5 中間伸長率（23让笆時，％) 10.3 10.8 9.5 10.5 S結節強度（kg ) 43.5 40.6 40.0 40.0 張設性 A A A A 線特性 張设性之扭曲部位個數 0 22 58 68 擊打感覺 反彈性（％) 62 64 65 66 旋轉（r.p.m) 250 330 390 400 表1中，強度係按照JIS L 1 〇 13來測定。伸長率係按 照JIS L 1013來測定。中間伸長率係按照JIS L 1〇13來測 定。S結節強度係按照JIS L 1013來測定。又，張設性「 表示「可毫無問題地張設」，「B」表示「可張設，但存在 難以通過孔眼之部位」，「C」表示「無法通過孔眼來進行 張設」。 反彈性係使重量4 kg之重物自高度2〇〇 mm落下至張 設之腸線面上，測定該情形之反彈高度（H)，並根據下述 式而計算出。 反彈率（％) = ( H/200 ) χίοο 旋轉性係使以850 rpm ( R1)回旋之球自4〇〇 mm落下 至張設之腸線（1根）上，使用與腸線面接觸後1〇 ms後之 18 201103606 轉速（R2 )，根據下述式而計算出。該旋轉性較大表示球 與腸線之摩擦較大，即表示旋轉良好。 旋轉性（rpm) =R1-R2 如表1所示，根據實施例1及比較例1之結果而可確 認：本實施例之球拍線之反彈性及旋轉性提高。 (實施例5)、（比較例6 ) 使用以如下方式所得之芯線作為芯線：使高強度尼龍6 複絲纖維（東麗公司製造，商品名“Amilan” 2100T-306f: 3 根，及 940T-136f : 1 根）以 UV ( ultraviolet，紫外線） 硬化樹脂含浸之後’以喷嘴（1.1 mm0)擠出而形成300 T/m 之搓條後進行UV照射而使之硬化。於該芯線上熔融塗布尼 龍6 ’製作複絲型之圓形剖面球拍線。該球拍線之直徑為 1.23 mm、強度為64 kg、伸長率為24%、結節強度為27 kg。 將該球拍線作為比較例6。 將該球拍線加熱至1 〇〇 t並通過間隙i.丨〇 mm之輥間， 藉此使该球拍線扁平化。所獲得之經扁平化之球拍線之長 徑為1.44 mm、短徑為1.12 mm且扁平度為1.29 〇球拍線之 強度為64 kg、伸長率為26%、結節強度為29 kg。將所獲 得之球拍線作為實施例5。 將該球拍線以6〇磅張設於硬式球拍上。球拍面上之扭 曲數為25個。作為比較，將扁平加工前之球拍線張設於相 同之球拍上，進行比較試打之結果，5名人員中有4名人員 給出本實施例之扁平化之球拍線易於打出旋轉球之評價。 作為;k轉性之s平價：利用.高速攝影機來測量球碰撞球拍並 19 201103606 回彈時之球回旋。即，撞擊時之球速度⑽、角度 (相對於垂直方向）、轉速大致0 rPm，與此相對，回彈 球之轉速之5次測定之平均值於圓形剖面之球拍線下為 2930 rPm，與此相對，於本實施例之扁平球拍線為3060 —，從而得知球之轉速大，易於打出旋轉球。 (實施例6) ' (比較例7 ) 使用聚對本―甲酸乙二酯樹脂（【V = i i )，製作對剖 面為圓形狀之單絲纖維進行扁平化加工而成之球拍線，及 使用大略長方形之紡絲紡嘴於相同條件下紡絲延伸之大致 同為扁平剖面形狀之球拍線來進行比較。 將直徑1.29 mm之圓形剖面之單絲纖維加熱至150〇c且 通過間隙1.1 mm之輥，所獲得之經扁平化之球拍線之長徑 為I·45 mm、紐徑為1.12 mm且扁平度為1.29、強度為61 kg、伸長率為34%、結節強度為44 kg(實施例6)。另一 方面，利用長方形紡嘴所獲得之作為比較之扁平球拍線的 長徑為1.42 mm、短徑為丨_13 mm且扁平度為i 26、強度為 66 kg、伸長率為3丨％、結節強度為49 kg (比較例7 )。 將上述2種球拍線以6〇磅張設於同類型之球拍上之結 果，扭曲次數於本實施例物品中為丨8個，於本比較例物品 中為16個。使用2種該球拍由5名人員進行比較試打評價 之結果，4名人員之評價為本實施例物品柔軟，陷入性佳。 以上述實施例1之反彈性評價中所使用之反彈測試法 來測定重物碰撞球拍面時之沉入量之結果，最大沉入量於 比較例中為6 mm ’與此相對於本實施例物品中為9 mm， 20 201103606 從而印證了本實施例物品之沉人县± 重較大，即柔軟且陷入性 佳。又，以上述旋轉性評價法淮紅 咬订評價之結果，入射時之 球速度1 〇〇 km/h、角度40度、轉、击 处大致0 rpm，與此相對， 回彈球之轉速於圓形剖面之球拍始* 深為2900 rpm，與此相 對’於本實施例物品之扁平球拍綠 味苟3130 rpm，從而得知 球之轉速大，易於打出旋轉球。 但一般認為係扁平加 之微細構造變化產生 雖不知道存在如此差別之原因， 工時之加熱變形所致之剖面厚度方^ 影響。 L屋菜上之可利用性] 本發明之球拍線適用於硬式 ^ , inn ^ '嶸忒網球、軟式網球 '羽毛球 壁球等之球拍。 【圖式簡單說明】 圖。圖1係本發明之-實施例之經扁平化之球拍線之剖面 圖2係用以製造本發明之一實施例之經扁平化之球拍 線之步驟說明圖。 圖。圖3係本發明之一實施例之扁平化前之球拍線之剖面 圖 4你i - 诉衣不將本發明之實施例1 (間隙間隔為1丨mm 之情形時）φ命 T聚作之扁平化球拍線張設於硬式球拍之狀離 之平面圖。 〜、 圖 5孫主 — 表示將本發明之實施例I (間隙間隔為1 .〇 mm 21 201103606 之it形時）中製作之扁平化球拍線張設於硬式球拍之狀態 之平面圖。 圖6係表不將本發明之實施例1 (間隙間隔為0.9 mm 之If形時）中製作之扁平化球拍線張設於硬式球拍之狀態 之平面圖。 圖7係表不將本發明之實施例2 (間隙間隔為1.1 mm 之清形時）中製作之扁平化球拍線張設於硬式球拍之狀態 之平面圖。 圖8係表不將本發明之實施例2 (間隙間隔I S 1.0 mm 之清形時）中製作之扁平化球拍線張設於硬式球拍之狀態 之平面圖。 圖9係表不將本發明之實施例3 (間隙間隔4 1 ·〇 mm 之清形夺）中製作之扁平化球拍線張設於硬式球拍之狀態 之平面圖。 圖1〇係表不將本發明之實施例3 ( F3隙間隔為0.9 mm 之隋形夺）中製作之扁平化球拍線張設於硬式球拍之狀態 之平面圖。 圖11係表示將本發明之實施例4 (間隙間隔為1 ·〇 mm 之情形時）中製作之扁平化球拍線張設於軟式球拍之狀態 之平面圖。 圖12係表不將本發明之實施例4 (間隙間隔為〇.9 mm 之It形時）中製作之扁平化球拍線張設於軟式球拍之狀態 之平面圖。 22 201103606 【主要元件符號說明】 1、1 2 芯線（單絲纖維） 2、13 側線（捲繞線） 3、14 包覆樹脂 4 捲線體 5 處理前之球拍線 6 加熱裝置 7a、7b 輥 10 扁平化球拍線 11 捲取體 23Comparative Example 1 (before flattening) Example 1 Processing gap interval (mm) 1.1 1.0 0.9 Conditional heating temperature and time -80 ° C, 0.5 minute tiredness (m/min) _ 4 Dimensions (mm) Short diameter 1.30 1.12 1.03 0.94, face diameter 1.31 1.43 1.48 1.57 Flatness long diameter / short diameter ^ 1.01 1.28 1.44 1.67 Strength (kg) 83.7 80.7 81.0 80.5 Physical elongation (%) 34.1 32.5 31.1 33.5 Intermediate elongation (23 for 笆, %) 10.3 10.8 9.5 10.5 S nodule strength (kg) 43.5 40.6 40.0 40.0 Tensile AAAA line characteristic Tensile part number 0 22 58 68 Strike feel rebound (%) 62 64 65 66 Rotation (rpm) 250 330 390 400 In Table 1, the strength was measured in accordance with JIS L 1 〇13. The elongation was measured in accordance with JIS L 1013. The intermediate elongation is measured in accordance with JIS L 1〇13. The S nodule strength was measured in accordance with JIS L 1013. In addition, the "extension" means "can be opened without problems", "B" means "can be opened, but there is a part that is difficult to pass through the hole", and "C" means "cannot be opened by the eyelet". The counter-elasticity was such that the weight of 4 kg was dropped from the height of 2 〇〇 mm to the gut surface of the set, and the rebound height (H) of the case was measured and calculated according to the following formula. Rebound rate (%) = ( H/200 ) χίοο The rotation is caused by the ball that circulates at 850 rpm (R1) from 4〇〇mm to the laid gut (1), and is used after contact with the gut surface. 18 after the ms 201103606 Speed (R2), calculated according to the following formula. This large rotation indicates that the ball has a large friction with the gut, that is, the rotation is good. Rotation (rpm) = R1 - R2 As shown in Table 1, it was confirmed from the results of Example 1 and Comparative Example 1 that the resilience and rotatability of the racket line of the present embodiment were improved. (Example 5), (Comparative Example 6) A core wire obtained by using a high-strength nylon 6 multifilament fiber (manufactured by Toray Industries, trade name "Amilan" 2100T-306f: 3, and 940T-) was used. 136f : 1) After impregnation with a UV (ultraviolet, ultraviolet) hardening resin, it was extruded at a nozzle (1.1 mm0) to form a 300 T/m crucible, and then cured by UV irradiation. A nylon cross-section racquet line of a multifilament type was produced by melt-coating the nylon 6' on the core wire. The racquet line has a diameter of 1.23 mm, a strength of 64 kg, an elongation of 24%, and a knot strength of 27 kg. This racket line was designated as Comparative Example 6. The racquet line is heated to 1 〇〇 t and passed between the rolls of the gap i. 丨〇 mm, thereby flattening the racquet line. The flattened racquet line obtained has a long diameter of 1.44 mm, a short diameter of 1.12 mm and a flatness of 1.29. The strength of the racquet string is 64 kg, the elongation is 26%, and the knot strength is 29 kg. The obtained racket line was taken as Example 5. The racquet line is placed on a hard racket at 6 lbs. The number of twists on the racket surface is 25. For comparison, the racquet line before the flat processing was placed on the same racquet, and the result of the comparison test was performed. Four of the five persons gave the evaluation that the flattened racquet line of the present embodiment is easy to play the rotating ball. As a k-transformed s parity: use a high-speed camera to measure the ball collision racquet and 19 201103606 rebound when the ball rebounds. That is, the ball speed (10), the angle (relative to the vertical direction), and the rotational speed at the time of impact are approximately 0 rPm, whereas the average of the five measurements of the rotational speed of the rebound ball is 2,930 rPm under the racquet line of the circular cross section. On the other hand, in the flat racket line of the present embodiment, it is 3060-, and it is known that the rotation speed of the ball is large, and it is easy to punch the rotating ball. (Example 6) ' (Comparative Example 7) A racquet line obtained by flattening a monofilament fiber having a circular cross section was prepared by using a poly-p-ethylene formate resin ([V = ii )), and the use was roughly The rectangular spun yarn spun yarns were spun under the same conditions and were roughly the same as the flat cross-sectional shape of the racket line for comparison. The flattened racquet line obtained by heating a monofilament fiber having a circular cross section of 1.29 mm to 150 〇c and passing through a gap of 1.1 mm has a long diameter of I·45 mm and a diameter of 1.12 mm and is flat. The degree was 1.29, the strength was 61 kg, the elongation was 34%, and the knot strength was 44 kg (Example 6). On the other hand, the comparative flattened racquet obtained by the rectangular spinning nozzle has a long diameter of 1.42 mm, a short diameter of 丨_13 mm, a flatness of i26, a strength of 66 kg, and an elongation of 3丨%. The nodule strength was 49 kg (Comparative Example 7). The results of the above two types of racquet lines being set on the same type of racquet were 6 lb., and the number of twists was 丨8 in the article of the present embodiment, and 16 in the article of the comparative example. Using the results of the comparison of the two types of the racket by five people, the evaluation of the four persons was as soft as the article of the example, and the sinking property was good. As a result of measuring the sinking amount when the weight hits the racket surface by the rebound test method used in the rebound evaluation of the above-described Example 1, the maximum sinking amount is 6 mm in the comparative example, and this is relative to the present embodiment. In the article, 9 mm, 20 201103606, it is confirmed that the Shenren County of the article of this embodiment has a large weight, that is, it is soft and has good sinking property. In addition, as a result of the evaluation of the rotatory evaluation method, the ball speed at the time of incidence is 1 〇〇km/h, the angle is 40 degrees, and the rotation and the hitting point are approximately 0 rpm, whereas the rebounding ball rotates at a speed of The racquet of the circular section starts at a depth of 2900 rpm, whereas the flat racquet of the article of this embodiment is 3130 rpm, so that the rotation speed of the ball is large, and it is easy to play the rotating ball. However, it is generally considered that the flat structure plus the fine structure change occurs, although it is not known that there is such a difference, the thickness of the section caused by the heating deformation during the working hours is affected. The availability of the L house dish] The racket line of the present invention is suitable for rackets of hard ^, inn ^ '嵘忒 tennis, soft tennis 'badminton squash, etc. [Simple diagram of the diagram] Figure. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view of a flattened racquet line of an embodiment of the present invention. Fig. 2 is an explanatory view showing a step of manufacturing a flattened racquet string according to an embodiment of the present invention. Figure. 3 is a cross-sectional view of a racket line before flattening according to an embodiment of the present invention. FIG. 4 is a case in which the present invention is not in the case of the first embodiment of the present invention (when the gap interval is 1 丨 mm) The flattened racquet line is placed on the plan of the hard racquet. 〜 、 孙 孙 孙 — — 孙 孙 孙 孙 孙 孙 孙 孙 孙 孙 孙 孙 孙 孙 孙 孙 平面图 平面图 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Fig. 6 is a plan view showing a state in which the flattened racquet string produced in the first embodiment (when the gap interval is 0.9 mm) is stretched over the hard racquet. Fig. 7 is a plan view showing a state in which the flattened racquet string produced in the second embodiment of the present invention (when the gap interval is 1.1 mm clear) is stretched over the hard racquet. Fig. 8 is a plan view showing a state in which the flattened racquet string produced in the second embodiment (clearing interval of the gap interval I S 1.0 mm) is stretched over the hard racquet. Fig. 9 is a plan view showing a state in which the flattened racquet string produced in the third embodiment (the gap interval of 4 1 · 〇 mm) of the present invention is stretched over the hard racquet. Fig. 1 is a plan view showing a state in which a flattened racquet string produced in the third embodiment of the present invention (F3 gap interval is 0.9 mm) is stretched over a hard racket. Fig. 11 is a plan view showing a state in which a flattened racquet string produced in the fourth embodiment of the present invention (when the gap interval is 1 · 〇 mm) is stretched over the soft racquet. Fig. 12 is a plan view showing a state in which the flattened racquet string produced in the fourth embodiment of the present invention (when the gap interval is 〇.9 mm is formed) is stretched over the soft racquet. 22 201103606 [Description of main component symbols] 1, 1 2 core wire (monofilament fiber) 2, 13 side wire (winding wire) 3, 14 coated resin 4 coiled body 5 racket string before treatment 6 heating device 7a, 7b roller 10 Flattened racket line 11 coiled body 23