200408738 玖、發明說明： (一） 發明所屬之技術領域 本發明係有關一種含有耐割傷性優異的纖維及含有該 纖維之編織物及含該纖維之耐割傷手套、背心、及使用於 疏水製構造體之水泥灰漿或混凝土補強用纖維狀物。 (二） 先前技術 以往，使用天然纖維之棉或一般有機纖維作爲耐割傷 性原料。而且，使此等纖維等大多使用於編織的手套必須 具有耐割傷性之範圍。 · 因此，考慮由芳族聚醯胺纖維等高強度纖維之紡績紗 所成的編物或織物等賦予耐割傷性機能。然而，就拔毛或 耐久性而言不充分。另一方法係試行藉由組合金屬纖維與 有機纖維與天然纖維以提高耐割傷性，惟藉由組合金屬纖 維，會有質感硬、損及柔軟性的問題。 而且，爲改善作爲水泥灰漿、混凝土之構造材缺點的 脆性方法，開發例如使金屬纖維·碳纖維•聚乙烯醇纖維· 各種烯烴纖維混練於各種水泥灰漿•混凝土之纖維補強混 0 凝土（例如特公昭5 8 - 1 8 343，專利25 1 067 1 )。然而，此等 補強用纖維例如高纖維之典型金屬纖維，雖藉由與混凝土 基體附著具有優異的補強效果，惟本質上會有比重變大、 構造體變重的缺點，另外，由於生銹而產生構造體強度降 低，港灣設施或輕量化所求超高層等之構造材不適當。另 外，無機纖維之玻璃纖維會有耐鹼性不佳的問題，碳纖維 中於混練中纖維彎曲、切斷的問題。然後，有機纖維由於 -5 - 200408738 強力低、爲得充分效果時纖維之混入量必須大幅增加，會 有ί丹塌降低問題。超高分子量聚乙嫌纖維之強度或耐驗性 極爲優異，且由於截面形狀扁平，纖維之剛性降低、於混 練中會有纖維間容易交織成塊的問題。 (三）發明內容 本發明係開發具有優異耐割傷性之新穎聚乙烯纖維， 且提供一種使用該纖維之耐割傷性編織物及耐割傷性優異 的手套或背心、及輕量且耐驗性優異、彎曲強度、耐久性 、韌性、耐濕性優異的水泥灰漿或混凝土補強用纖維及補 強用纖維狀物。 本發明係爲解決課題、再三深入硏究的結果，爲製得 耐割傷性優異的聚乙烯纖維、編織物、手套及背心時，以 下述方‘法。 1 . 一種耐割傷性優異的聚乙烯纖維，其之拉伸強度爲 15cN/dtex以上，拉伸彈性模數爲500cN/dtex以上，其中 由該纖維所成筒編物之庫普試驗機的指數値爲3 . 0以上。 2 .如上述第1項之聚乙烯纖維，其在纖維狀態之重量平 均分子量爲300, 000以下，重量平均分子量與數量平均分 子量之比（Mw/Mn)爲4.0以下。 3 . —種耐割傷性優異的聚乙烯纖維編物，其特徵爲由含 如上述第1項之聚乙烯纖維的編織物所成。 4 . 一種耐割傷性手套，其特徵爲含有如上述第1項之聚 乙烯纖維。 5 . —種耐割傷性背心，其特徵爲含有如申請專利範圍第 - 6- 200408738 1項之聚乙烯纖維。 6 · —種水泥灰漿或混凝土補強用纖維狀物，其在纖維狀 態之重量平均分子量爲300, 000以下，重量平均分子量與 數量平均分子量比（Mw/Mn)爲4.0以下，其以強度i5cN/dtex 以上、彈性模數5 0 0 c N / d t e X以上之高強度聚乙烯纖維作爲 主成分。 7 ·如上述第6項之水泥灰漿或混凝土補強用纖維狀物， 其中高強度聚乙烯纖維之單纖維纖度爲1.5dt ex以下。 8 .如上述第6或7項之水泥灰漿或混凝土補強用纖維狀 # 物，其中纖維爲裝飾用單纖維。 9 ·如上述第6〜8項中任一項之水泥灰漿或混凝土補強 用纖維狀物，其中纖維係爲使數條切成適當長度之高強度 聚乙烯纖維收束的切片。 1 0 · —種混凝土組成物，其特徵爲含有如申請專利範圍 第9項之切片所成。 於下述中詳述本發明。 (四）實施方式 · 本發明耐割傷性優異的聚乙烯纖維之原料纖維，其特 徵爲重複單位實質上爲乙烯，少量其他單體例如α -烯烴、 丙烯酸及其衍生物、甲基丙烯酸及其衍生物、乙爆基矽烷 及其衍生物等之共聚物，亦可爲此等之共聚物同志、或與 乙烯單獨聚合物之共聚物、以及與其它α -烯烴等均聚物之 混合物。特別是藉由使用與丙烯、戊烯-1等α -烯烴之共聚 物，製造含有一定程度長鏈支鏈以製造本纖維時，特別是 -7- 200408738 就紡紗•延伸中可賦予製紗之安定性，故較佳。然而 長 鏈支鏈之量過多時，會有缺陷、纖維強度降低。 一 而且，纖 維狀態之重量平均分子量爲3 0 0，〇 〇 〇以下、重鲁 奧十均分子 量與數量平均分子量之比（Mw/Mn)爲4.0以下極爲重m ^ 佳者纖維狀態之重量平均分子量爲250, 〇〇〇以下、 均分子量與數量平均分子量之比（Mw/Μη)爲3.5以 要。更佳者纖維狀態之重量平均分子量爲200, 〇〇〇以τ、 重量平均分子量與數量平均分子量之比（Mw/Μη)爲3.0 & τ 極爲重要。 使用纖維狀態之聚乙烯的重量平均分子量大於 300，000之聚合度的聚乙條作爲原料時，溶融黏度極高、熔 融成型加工極爲困難。另外，與使用纖維狀態之重量平均 分子量與數量平均分子量之比爲4 · 0以上的相同重量平均 分子量之聚合物相比時，最高延伸倍率低且所得紗之強度 低。此係與相同重量平均之聚乙烯相比時，緩和時間長的 分子鏈進行延伸時無法延伸而導致斷裂情形時，爲藉由使 分子量分布變廣、增加低分子量成分時，推測因增加分子 末端而引起強度降低之故。而且，爲控制纖維狀態之分子 量與分子量分布時，可使熔融•押出工程或紡紗工程中聚 合物惡化、亦可以預先使用具有狹窄分子量分布之聚乙條 〇 本發明耐割傷性優異的聚乙烯纖維的製法中’使該聚 乙烯以押出機熔融押出，以齒輪幫浦經由紡紗模具定量吐 出。然後，以冷風使該紗條冷卻，以指定速度牽引。此時 -8 - 200408738 ，儘快牽引極爲重要。換言之，吐出線速度與捲取速度之 比爲1QQ以上極爲重要。較佳者爲15()以上，更佳者爲2〇〇 以上。吐出速度與捲取速度之比可由模具孔徑、單孔吐出 里、《谷融狀％之e物密度、捲取速度計算求得。 另外’使該纖維以下述所示方法延伸極爲重要。換言 之，使該纖維在該纖維之結晶分散溫度以下的溫度進行延 伸，在該纖維之結晶分散溫度〜熔點之溫度下另外進行延 伸’可得驚人程度之纖維物性提高效果。此時，亦可以多 段式使纖維延伸。 本發明於延伸時藉由使第丨台纏結輥之速度固定爲 5 m / m i η、改變其他纏結輕之速度，製得指定延伸倍率之紗 〇 藉由上述所得聚乙烯纖維可以習知方法形成編織物。 本發明之編織物當然有僅由構成編織物之原紗主成分所成 纖維時，不會妨礙其他纖維混入，視創意或機能亦可加入 例如其他合成纖維或天然纖維。同樣地以習知方法可作成 耐割傷手套及作成背心。本發明之耐割傷手套及背心，同 樣地僅由構成原紗之主成分所成的纖維時，不會妨礙其他 纖維混入’視創意或機能而定亦可添加例如其他合成纖維 或天然纖維。 另外’製造本發明之水泥灰漿或混凝土補強用纖維或 纖維狀物的方法，必須慎重採用新穎製法，例如下述方法 ’惟不受此等所限制。 本發明之聚乙烯，其特徵爲重複單位實質上爲乙烯， -9- 200408738 其他單體α _烯烴、丙烯酸及其衍生物、甲基丙烯酸及其衍 生物、乙烯基矽烷及其衍生物等之共聚物，亦可爲此等之 共聚物同志、或與乙烯單獨聚合物之共聚物、以及與其它α-烯烴等均聚物之混合物。特別是藉由使用與丙烯、戊烯_ i 等α -烯烴之共聚物，製造含有一定程度長鏈支鏈以製造本 纖維時’特別是就紡紗·延伸中可賦予製紗之安定性，故 較佳。然而，除乙烯外之含量過多時，反而會成爲未延伸 之阻害要因’就製得高強度•高彈性模數纖維長而言單體 單位爲0.2mol%以下、較佳者爲以下。當然，乙烯 單獨之均聚物亦可。而且，纖維狀態之重量平均分子量爲 300, 000以下、重量平均分子量與數量平均分子量之比 (Mw/Μη )爲4 . 0以下極爲重要。較佳者纖維狀態之重量平均 分子量爲250, 000以下、重量平均分子量與數量平均分子 量之比（Mw / Μη )爲3 . 5以下極爲重要。更佳者纖維狀態之重 量平均分子量爲 200, 000以下、重量平均分子量與數量平 均分子量之比（Mw/Μη)爲3 · 0以下極爲重要。 使用纖維狀態之聚乙烯的重量平均分子量大於 300, 000之聚合度的聚乙烯作爲原料時，熔融黏度極高、熔 融成型加工極爲困難。另外，與使用纖維狀態之重量平均 分子量與數量平均分子量之比爲4〇以上的相同重量平均 分子量之聚合物相比時，最高延伸倍率低且所得紗之強度 低。此係與相同重量平均之聚乙烯相比時，緩和時間長的 分子鏈進行延伸時無法延伸而導致斷裂情形時，爲藉由使 分子重分布變廣、增加低分子量成分時，推測因增加分子 200408738 末端而引起強度降低之故。而且，爲控制纖維狀態之分子 量與分子量分布時，可使熔融•押出工程或紡紗工程中聚 合物惡化、亦可以預先使用具有狹窄分子量分布之聚乙烯 〇 本發明之耐割傷性優異的聚乙烯纖維的製法中，使該 聚乙烯以押出機熔融押出，以齒輪幫浦經由紡紗模具定量 吐出。然後，以冷風使該紗條冷卻，以指定速度牽引。此 時，儘快牽引極爲重要。換言之，吐出線速度與捲取速度 之比爲100以上極爲重要。較佳者爲150以上，更佳者爲200 以上。吐出速度與捲取速度之比可由模具孔徑、單孔吐出 量、熔融狀態之聚合物密度、捲取速度計算求得。如此由 於凝膠紡紗時沒有使用溶劑，例如使用圓形模具時，纖維 截面爲圓形之紡紗·延伸時之張力中會產生壓熔情形。 另外，使該纖維以下述所示方法延伸極爲重要。換言 之，使該纖維在該纖維之結晶分散溫度以下之溫度進行延 伸，在該纖維之結晶分散溫度〜熔點之溫度下另外進行延 伸，可得驚人程度之纖維物性提高效果。此時，亦可以多 段式使纖維延伸。 本發明於延伸時藉由使第1台纒結輥之速度固定爲 5 in / m i η、改變其他纏結輕之速度，製得指定延伸倍率之紗 〇 裝飾用單纖維之水泥灰漿或混凝土補強用纖維狀物可 藉由使所得纖維切成指定長度。特別是裝飾用單纖維可有 效地用於灰漿補強用途，切斷長度以30mm以下爲宜。爲30mm 200408738 以上予以混練時纖維爲塊狀（纖維球），就均勻性而言不佳 。此處’灰漿補強用途使用稱爲混合物之砂與水泥與纖維 的混合物。製作混合物時，纖維之分散預均勻時，可有效 地發揮纖維之特性。本發明之纖維由於截面形狀爲圓形， 幾乎完全沒有熔融或壓熔，可賦予一條一條之補強效果且 具有剛性，具有容易均勻分散的特徵。 單纖維型有機纖維之水泥灰漿或混凝土補強用纖維狀 物’使所得纖維調成指定粗細，使用集束劑或熱熔融纖維 ，使各單纖維結合，然後切成指定長度製得。特別是選擇 鲁 耐鹼性優異的樹脂較佳，例如環氧樹脂或苯酚樹脂等之熱 硬性樹脂或乙烯系樹脂或胺甲酸酯樹脂、丙烯酸樹脂等之 熱塑性。熱熔融纖維係爲選自具有芯鞘構造之鞘構造部分 的熔點爲120 °C以下之纖維，或纖維全體之熔點爲120 °C以 下之纖維。該所得的單纖維型有機纖維係使用切成適當長 度之切片。切斷長度對最大粗骨材直徑而言符合1倍〜2倍 間長度較佳。單纖維型有機纖維時，由於在纖維上附著樹 脂、集束，故以補強效果低的樹脂含量儘可能少者較佳。 # 本發明之纖維由於截面形狀爲圓形，樹脂之附著均勻可得 附著的效果。而且，以熱熔融紗等集束時，例如本發明之 纖維上覆蓋熱熔融紗的方法。於該設計中纖維之形狀爲圓 截面，具有使表面積變小的效果，較異形截面之纖維的水 吸收變小，故可期待坍塌損失變小的效果。使用灰漿時以 使用30mm以下較佳。 本發明之混凝土組成物係水泥使用一般所使用者，例 - 1 2 - 200408738 如不受地域或種類所限制，以一般使用者製作者。而且， 可使用適當選擇灰塵或高爐爐渣微粉末。 於下述中說明本發明之特性値得測定法及測定條件。 (強度•彈性模數） 本發明之強度•彈性模數係使用歐里恩迪克（譯音）公 司製「迪西龍（譯音）」、以試料長20 Omm (格間長度）、伸長 速度100%/分、在氣氛溫度20°C、相對濕度65%條件下測定 變形-應力曲線’以曲線之斷裂點之應力爲強度（cN/dtex) 、自曲線之原點附近最大分配的接線計算彈性模數 (cN/dt ex)求得。而且，各値係使用1〇次測定値之平均値 〇 (重量平均分子量Mw及數量平均分子量Μη及Μη) 重量平均分子量Mw、數量平均分子量Μη及Mw/Μη藉 由凝膠•滲透•色層分析法（GPC)測定。GPC裝置爲Wat ers 製 GPC 15 0C ALC/GPC，柱使用 1 條 SHODEX 製 GPC UT802 · 5 、2條UT8 0 6M予以測定。測定溶劑使用鄰二氯苯、柱溫度 爲1 4 5度。試料濃度爲1 . 〇 m g / m 1、注入2 0 0 m 1測定。分子 量之檢量線藉由通用分度法、使用分子量已知的聚苯乙烯 試料構成。 (動態黏彈性測定） 本發明之動態黏度測定係使用歐里恩迪克（譯音）公司 製「雷歐拜布龍（譯音）DDV-01 FP型」進行。纖維全體分纖 或合紗成1 00旦尼爾± 1 0旦尼爾，考慮使各單纖維儘可能 均勻配列，使測定長度（剪刀模具間距離）爲20mm之纖維兩 -13- 200408738 末端以鋁箔包住，以纖維素系黏合劑黏接。此時，塗抹發 糊長度考慮與剪刀模具固定時爲5mm左右。各試驗片係於 設定爲20mm初期寬度之剪刀模具（夾盤）上紗不會鬆弛回來 下慎重設置，預先在60t之溫度、1 10Hz之周波數下數秒 予以預備變形後，實施本實驗。本實驗係在-1 5 0。(：〜1 5 0。(3 之溫度範圍、約1 °C /分鐘之昇溫速度下，自低溫側求取1 1 〇 η z 周波數之溫度分散。測定中靜態荷重設定爲5 g f，且在纖維 不會鬆弛下自動調整試料長度，動態變形之振幅設定爲1 5， 〇 (吐出線速度與紡紗速度之比（牽伸比）） 牽伸比（Ψ )以下述式求得。 牽伸比（Ψ )=紡紗速度（V s ) /吐出線速度（V ) (耐割傷性測定用試樣之調整） 準備440dt ex± 4 0dtex之原紗以1〇〇條圓編機測定的纖 維編織。試料係選擇沒有編織跳紗的部分，切成尺寸爲7X 7 cm以上。由於編目粗，使一張藥包紙貼於試料下方進行試 驗。測定的部分對編目方向而言成9 0 °予以切斷。 (耐割傷性測定） 評估方法係使用庫普試驗機。該裝置係使圓形刀在試 料上方之行走方向與相反方向回轉且行走，切斷試料，切 斷後試料內面爲鋁箔，藉由使圓形刀與鋁接觸、使電氣通 過，感覺切斷試驗完成。切斷機運作間，由於裝設裝置之 計算器計算，記錄其數値。 該試驗係使針數約2 0 0 g / m 2之平織棉布作爲對照用， 200408738 評估與試驗試料之割傷水準。自對照開始試驗，使對照與 〇式驗δ式料相互進丫了 g式驗’ g式驗g式料進丫了 5次試驗，最後對 照用進行第6次試驗後，該次試驗完成。 此處，計算的評估値稱爲指數，藉由下式求取。200408738 (1) Description of the invention: (1) The technical field to which the invention belongs The present invention relates to a fiber containing excellent cut resistance and a woven fabric containing the fiber and a cut resistant glove, vest containing the fiber, and used for hydrophobic Fibrous materials for cement mortar or concrete reinforcement of structures. (II) Prior technology In the past, cotton using natural fibers or general organic fibers was used as the cut-resistant raw material. In addition, gloves that are mostly used for knitting such fibers must have a cut resistance range. · Therefore, it is considered that knitting fabrics or fabrics made of spin yarns of high-strength fibers such as aramid fibers provide cut resistance. However, it is insufficient in terms of plucking or durability. Another method is to try to improve the cut resistance by combining metal fibers with organic fibers and natural fibers. However, by combining metal fibers, there will be problems of hard texture and loss of flexibility. In addition, in order to improve the brittleness of cement mortar and concrete construction materials, we have developed, for example, metal fibers, carbon fibers, polyvinyl alcohol fibers, and various olefin fibers mixed with various cement mortars and concrete. Sho 5 8-1 8 343, patent 25 1 067 1). However, although these reinforcing fibers, such as typical high-fiber metal fibers, have excellent reinforcing effects by adhering to a concrete substrate, they inherently have the disadvantages of increasing the specific gravity and the weight of the structure. In addition, due to rust, The structural strength is reduced, and structural materials such as super high-rise buildings required for harbor facilities or lightweighting are not suitable. In addition, glass fibers of inorganic fibers have problems of poor alkali resistance, and carbon fibers have problems of bending and cutting during kneading. However, due to the low strength of -5-200408738, in order to obtain sufficient effect, the amount of blended fibers must be increased significantly, and there will be a problem of reduction. The ultra-high molecular weight polyethylene fibers have excellent strength or durability, and because the cross-sectional shape is flat, the rigidity of the fibers is reduced, and there is a problem that the fibers are easily intertwined and lumped during kneading. (3) Summary of the Invention The present invention is to develop a novel polyethylene fiber with excellent cut resistance, and to provide a cut-resistant knitted fabric using the fiber and a glove or vest with excellent cut resistance, and a lightweight and durable Cement mortar or concrete reinforcing fiber and reinforcing fibrous material having excellent flexibility, bending strength, durability, toughness, and moisture resistance. The present invention is a result of intensive research to solve the problem. In order to obtain polyethylene fibers, knitted fabrics, gloves, and vests having excellent cut resistance, the following method is used. 1. A polyethylene fiber with excellent cut resistance, which has a tensile strength of 15 cN / dtex or more and a tensile elastic modulus of 500 cN / dtex or more, in which the index of the Koop tester of the tube knitted fabric formed by the fiber値 is 3.0 or more. 2. The polyethylene fiber according to item 1 above, having a weight-average molecular weight in a fiber state of 300,000 or less, and a ratio of weight-average molecular weight to number-average molecular weight (Mw / Mn) of 4.0 or less. 3. A kind of polyethylene fiber knitted fabric with excellent cut resistance, which is characterized in that it is made of a knitted fabric containing polyethylene fibers as described in item 1 above. 4. A cut-resistant glove comprising polyethylene fibers as described in item 1 above. 5. A cut-resistant vest, which is characterized by containing polyethylene fibers as described in the patent application No. 6-200408738 1. 6 · A fiber material for cement mortar or concrete reinforcement, the weight average molecular weight in the fiber state is 300,000 or less, the weight average molecular weight to number average molecular weight ratio (Mw / Mn) is 4.0 or less, and its strength i5cN / High-strength polyethylene fibers with a dtex or higher and an elastic modulus of 500 c N / dte X or higher are used as main components. 7 · The fiber material for cement mortar or concrete reinforcement according to item 6 above, wherein the single fiber fineness of the high-strength polyethylene fiber is 1.5 dt ex or less. 8. The fibrous material for cement mortar or concrete reinforcement according to item 6 or 7 above, wherein the fiber is a single fiber for decoration. 9. The fiber material for cement mortar or concrete reinforcement according to any one of items 6 to 8 above, wherein the fiber is a slice obtained by cutting a plurality of high-strength polyethylene fibers into appropriate lengths. 1 0 · —A kind of concrete composition, which is characterized by containing a slice as in item 9 of the scope of patent application. The present invention is described in detail below. (IV) Embodiments · The raw material fibers of polyethylene fibers having excellent cut resistance of the present invention are characterized in that the repeating unit is substantially ethylene, and a small amount of other monomers such as α-olefin, acrylic acid and its derivatives, methacrylic acid, and Copolymers of its derivatives, ethoxysilanes and their derivatives, etc., can also be comrades of such copolymers, or copolymers with ethylene alone, and mixtures with homopolymers such as other alpha-olefins. In particular, when using copolymers with α-olefins such as propylene and pentene-1 to produce this fiber with a certain degree of long-chain branching, especially -7-200408738 can be used for spinning and stretching. The stability is better. However, when the amount of long-chain branches is too large, defects and fiber strength decrease. In addition, the weight average molecular weight of the fiber state is 300,000 or less, and the ratio of the weight average molecular weight (Mw / Mn) of the weight-average molecular weight (Mw / Mn) is 4.0 or less. The weight average of the fiber state is the best. The molecular weight is 250, 000 or less, and the ratio (Mw / Mη) of the average molecular weight to the number average molecular weight is 3.5. It is more important that the weight-average molecular weight of the fiber state is 200, 000. It is extremely important that τ and the ratio of weight-average molecular weight to number-average molecular weight (Mw / Mη) be 3.0. When a polyethylene strip having a weight average molecular weight of more than 300,000 with a fiber average weight of polyethylene is used as a raw material, the melt viscosity is extremely high, and melt molding processing is extremely difficult. In addition, when using a polymer having the same weight average molecular weight as the ratio of the weight average molecular weight to the number average molecular weight in the fiber state of 4.0 or higher, the highest draw ratio is low and the strength of the resulting yarn is low. In comparison with polyethylene of the same weight average, when the molecular chain with a long relaxation time cannot be extended due to extension and breakage occurs, in order to widen the molecular weight distribution and increase low molecular weight components, it is presumed to increase molecular ends This causes a reduction in strength. In addition, in order to control the molecular weight and molecular weight distribution of the fiber state, the polymer can be deteriorated in the melt-extrusion process or the spinning process, and a polyethylene strip having a narrow molecular weight distribution can also be used in advance. In the production method of ethylene fiber, the polyethylene is melted and extruded by an extruder, and is quantitatively discharged through a spinning mold by a gear pump. Then, the sliver is cooled with cold wind and pulled at a specified speed. At this time -8-200408738, it is extremely important to pull as soon as possible. In other words, it is extremely important that the ratio of the ejection linear speed to the winding speed is 1QQ or more. It is preferably 15 () or more, and more preferably 2000 or more. The ratio of the ejection speed to the winding speed can be calculated from the mold hole diameter, the single-hole ejection distance, the density of the eutectic material, and the winding speed. In addition, it is extremely important to extend the fiber in the method shown below. In other words, stretching the fiber at a temperature below the crystalline dispersion temperature of the fiber, and further stretching at a temperature from the crystalline dispersion temperature to the melting point of the fiber 'can provide an amazing degree of improvement in fiber physical properties. In this case, the fibers may be stretched in multiple steps. In the present invention, when the speed of the first entanglement roller is fixed to 5 m / mi η and the speed of other entanglement light is changed, a yarn with a specified elongation ratio is prepared. The polyethylene fiber obtained above can be used to learn Method to form a braid. Of course, the knitted fabric of the present invention does not hinder the incorporation of other fibers when the fiber is composed only of the main components of the raw yarn constituting the knitted fabric, and other synthetic fibers or natural fibers may be added depending on creativity or function. Similarly, cut-resistant gloves and vests can be made by conventional methods. Similarly, the cut-resistant gloves and vest of the present invention will not prevent other fibers from being mixed when the fibers are composed only of the main components constituting the raw yarn. Depending on the creativity or function, other synthetic fibers or natural fibers may be added. In addition, the method of manufacturing the cement mortar or the concrete reinforcing fiber or fibrous material of the present invention must adopt a novel manufacturing method carefully, such as the following method, but it is not limited to these. The polyethylene of the present invention is characterized in that the repeating unit is substantially ethylene. -9-200408738 Other monomers α-olefin, acrylic acid and its derivatives, methacrylic acid and its derivatives, vinyl silane and its derivatives, etc. Copolymers can also be comrades of these copolymers, or copolymers with a separate polymer of ethylene, and mixtures with homopolymers such as other alpha-olefins. In particular, by using copolymers with α-olefins such as propylene and pentene_i to produce the fibers with a certain degree of long-chain branching, the stability of the yarn production can be imparted, especially in spinning and stretching, It is better. However, when the content other than ethylene is too large, it will become an unstretched cause of hindrance. 'In order to obtain high strength and high elastic modulus fiber length, the monomer unit is 0.2 mol% or less, preferably the following. Of course, homopolymers of ethylene alone are also possible. Furthermore, it is extremely important that the weight average molecular weight of the fiber state is 300,000 or less, and the ratio of the weight average molecular weight to the number average molecular weight (Mw / Mη) is 4.0 or less. It is extremely important that the weight average molecular weight of the fiber state is 250, 000 or less, and the ratio of the weight average molecular weight to the number average molecular weight (Mw / Mn) is 3.5 or less. It is extremely important that the fiber has a weight average molecular weight of 200,000 or less, and a ratio of weight average molecular weight to number average molecular weight (Mw / Mη) of 3.0 or less. When polyethylene having a weight-average molecular weight of more than 300,000 in a fiber state is used as a raw material, melt viscosity is extremely high, and melt molding processing is extremely difficult. In addition, when using a polymer having the same weight average molecular weight as the ratio of the weight average molecular weight to the number average molecular weight of 40 in the fiber state, the highest draw ratio is low and the strength of the obtained yarn is low. When compared with polyethylene of the same weight average, when the molecular chain with a long relaxation time cannot be extended and breaks due to extension, in order to broaden the molecular redistribution and increase low molecular weight components, it is presumed that the molecular 200408738 The end causes a reduction in strength. In addition, in order to control the molecular weight and molecular weight distribution of the fiber state, the polymer can be deteriorated in the melt-extrusion process or the spinning process, and polyethylene having a narrow molecular weight distribution can also be used in advance. In the production method of ethylene fiber, the polyethylene is melted and extruded by an extruder, and is quantitatively discharged by a gear pump through a spinning die. Then, the sliver is cooled with cold wind and pulled at a specified speed. At this time, it is extremely important to pull as soon as possible. In other words, it is extremely important that the ratio of the ejection linear speed to the winding speed is 100 or more. It is preferably 150 or more, and more preferably 200 or more. The ratio of the ejection speed to the coiling speed can be calculated from the mold hole diameter, the single-hole ejection amount, the polymer density in the molten state, and the coiling speed. In this way, no solvent is used for gel spinning. For example, when using a circular mold, the fiber with a circular fiber cross-section is stretched and tension is generated during stretching. In addition, it is extremely important to stretch the fiber by the method shown below. In other words, if the fiber is stretched at a temperature below the crystalline dispersion temperature of the fiber, and the fiber is further stretched at a temperature from the crystalline dispersion temperature to the melting point of the fiber, an amazing degree of fiber physical property improvement effect can be obtained. In this case, the fibers may be stretched in multiple steps. In the present invention, when the speed of the first knotting roller is fixed to 5 in / mi η and the speed of other entanglement light is changed, the yarn with a specified extension ratio is prepared. The single-fiber cement mortar or concrete reinforcement for decoration With a fibrous material, the obtained fiber can be cut into a specified length. In particular, the decorative single fiber can be effectively used for mortar reinforcement, and the cut length is preferably 30 mm or less. When blended for 30mm 200408738 or more, the fibers are lumpy (fiber balls), which is not good in terms of uniformity. Here, the 'mortar reinforcement' uses a mixture of sand called cement and cement and fiber. When the mixture is prepared, when the fiber is dispersed uniformly, the characteristics of the fiber can be effectively exerted. Because the cross-sectional shape of the fiber of the present invention is circular, it has almost no melting or pressure melting. It can provide a reinforcing effect one by one, has rigidity, and is easy to uniformly disperse. The single-fiber type organic fiber is made of cement mortar or concrete reinforcing fiber to adjust the obtained fiber to a specified thickness, and the single fibers are combined using a bundling agent or hot-melt fiber, and then cut to a predetermined length. In particular, it is preferable to select a resin excellent in alkali resistance, such as a thermoplastic resin such as an epoxy resin or a phenol resin, or a thermoplastic resin such as a vinyl resin, a urethane resin, or an acrylic resin. The hot-melt fiber is a fiber selected from a sheath structure having a core-sheath structure and having a melting point of 120 ° C or less, or a fiber having a melting point of 120 ° C or less as a whole. The obtained single-fiber type organic fiber was cut into pieces having a proper length. The cut length is preferably 1 to 2 times the maximum coarse aggregate diameter. In the case of single-fiber type organic fibers, resins and bundles are attached to the fibers. Therefore, the resin content with a low reinforcing effect is preferably as small as possible. # Since the cross-sectional shape of the fiber of the present invention is circular, the adhesion of the resin is uniform, and the effect of adhesion can be obtained. In the case of bundling with hot-melt yarn or the like, for example, the method of covering the fiber of the present invention with the hot-melt yarn. In this design, the shape of the fiber has a circular cross section, which has the effect of reducing the surface area, and the water absorption is smaller than that of the fiber with a special cross section. Therefore, the effect of reducing the collapse loss can be expected. When using mortar, it is better to use 30mm or less. The concrete composition of the present invention is generally used by cement users, for example-1 2-200408738 If it is not restricted by region or type, it is made by general users. Moreover, an appropriate selection of dust or fine powder of blast furnace slag can be used. The characteristics of the present invention and the measurement method and measurement conditions are described below. (Strength and Elasticity Modulus) The strength and elasticity modulus of the present invention are based on the "Disilon" produced by Orientic (Transliteration), with a sample length of 20 Omm (lattice length) and an elongation rate of 100% / Min. The deformation-stress curve is measured at an ambient temperature of 20 ° C and a relative humidity of 65%. The stress at the breaking point of the curve is used as the strength (cN / dtex). (CN / dt ex). In addition, the average 使用 (weight average molecular weight Mw and number average molecular weights Mn and Mη) of each measurement system was measured 10 times. The weight average molecular weight Mw, number average molecular weights Mn, and Mw / Μη were determined by gel, permeation, and color layers. Analytical method (GPC). The GPC device was GPC 15 0C ALC / GPC manufactured by Waters. The column was measured using one GPC UT802 · 5 manufactured by SHODEX and two UT80 0.6M. The measurement solvent was o-dichlorobenzene, and the column temperature was 145 ° C. The sample concentration was measured at 1.0 mg / m1, and injected at 2000m1. The calibration curve of molecular weight is constructed by a universal indexing method using a polystyrene sample of known molecular weight. (Dynamic Viscoelasticity Measurement) The dynamic viscosity measurement of the present invention was performed using a "Leobeibroun DDV-01 FP model" manufactured by Orion Dick. The whole fiber is split or spun into 100 denier ± 10 denier. It is considered to arrange the single fibers as evenly as possible, so that the measured length (distance between scissors and mold) is 20mm. Covered with aluminum foil and bonded with a cellulose-based adhesive. At this time, the length of the application paste is about 5 mm when fixed to the scissors mold. Each test piece was set on a scissors mold (chuck) set to an initial width of 20 mm so that the yarn would not come back loose. Set carefully, perform preliminary deformation at a temperature of 60 t and a cycle number of 10 Hz for a few seconds, and then perform this experiment. This experiment is at -150. (: ~ 1 5 0. (3 temperature range, 1 ° C / minute temperature rise rate, the temperature dispersion of 1 1 〇η z cycle wave number is obtained from the low temperature side. During the measurement, the static load is set to 5 gf, and The length of the sample is adjusted automatically when the fiber does not slacken, and the amplitude of the dynamic deformation is set to 15.0 (the ratio of the discharge linear speed to the spinning speed (drawing ratio)). The draft ratio (Ψ) is obtained by the following formula. Elongation (Ψ) = Spinning speed (V s) / Discharge linear speed (V) (Adjustment of the sample for measuring cut resistance) Prepare a raw yarn of 440 dt ex ± 40 dtex to measure with a 100 circular knitting machine The fiber is woven. The sample is selected without knitting jumper and cut to a size of 7X 7 cm or more. Due to the thick catalogue, a piece of medicine paper is stuck under the sample for testing. The measured part is 9 for the cataloging direction. Cut at 0 °. (Measurement of cut resistance) The evaluation method is a Cooper tester. This device rotates the circular knife in the direction above the sample and moves in the opposite direction, and cuts the sample. The surface is made of aluminum foil. By contacting the circular blade with aluminum and passing electricity through, The cut-off test was completed. The number of stitches was recorded by the calculator installed in the cutting machine during operation. The test was performed on a plain woven cotton cloth with a needle count of about 200 g / m 2 for comparison. The cut level of the test sample. The test was started from the control, so that the control and the 0-type test δ-type material entered each other. The g-type test was performed 5 times. Then, the test is completed. Here, the calculated evaluation is called an index, and it is obtained by the following formula.
A =(試料試驗前棉布之計算値+試料試驗前棉布之計算値）/ 2 Indtex =(試料之計算値+ A)/A 此次評估所使用的切斷機係使用0LFA公司製螺旋切斷 機L型用φ 45_。材質係爲SKS-7鎢鋼，刀厚度〇 . 3mm。 而且，試驗時之荷重爲3 2 0克予以進行評估。 (灰漿預混物之分散性評估） 將砂與水泥（S / C = 40 )之混合物置於維尼綸袋中，各混 入〇 · 1 %纖維，測定直至產生纖維球爲止之混入量。纖維僅 可能以分散狀態投入，攪拌3 0分鐘，判斷產生5mm以上塊 狀物、且產生纖維球情形。重複進行該試驗5次，算出平 均値作爲臨界混入量。 (灰漿彎曲試驗） 以灰漿預混物之分散性評估所得的最大混入量的預混 物材料中以水與水泥比爲45%下混入水，攪拌2分鐘。製作 灰漿爲10x 10x40(cm)之供試體。養生期間爲14日。彎曲 試驗條件係彎曲速度爲跨距之1 / 1 500，實施比較跨距30cm 之4點彎曲試驗。然後，爲確認纖維之效果時，在中央之 變位點彎曲2mm之位置上比較荷重，作爲纖維之韌性性能 〇 (坍塌試驗） -15- 200408738 使本發明纖維以樹脂或熱熔融纖維集束，製得單纖維 型有機纖維。 ’ 坍塌試驗係使細構材與水泥攪拌1分鐘，再加入最大 粗構材直徑20mm之粗構材與水予以混練2分鐘，另加入單 纖維型有機纖維與減水劑，製作混凝土灰漿。各配合比係 水泥比5 0 %、細構材比5 0 %、單位水量爲1 9 0 k g / m3、最大粗 構材直徑2 Omm、纖維混入量1 ν ο 1 %、減水劑對聚羧酸系水 泥量而言爲2%。坍塌試驗以；i IS-A1 10爲基準測定。 (混凝土彎曲試驗） φ 以坍塌試驗所得的混凝土灰漿使用：[C I - SF4「纖維補 強混凝土之彎曲強度及彎曲粗糙度試驗方法」之試驗法爲 基準，製作10xl0x40(cm)之供試體。養生日數爲28日。 彎曲試驗條件係彎曲速度爲跨距之1 / 1 500，實施比較跨距 3 0cm之4點彎曲試驗。評估項目係評估最大彎曲強度與2mm 換算彎曲強度。 【實施例】 於下述中藉由實施例說明本發明。 β (實施例1 ) 使重量平均分子量1 1 5, 000、重量平均分子量與數量 平均分子量之比爲2.3、具有5個以上碳長度的支鏈於碳爲 1,000個時爲0.4個之高密度乙烯自由φ0.8_、390Η所成 的紡紗模具、在29CTC下以單孔吐出量0.5g/nnn之速度押 出。押出的纖維通過15cm之保溫區間，再於20 °C下、以 0.5m/s之急冷劑冷卻，以300m/nnn之速度捲取。使該未延 200408738 伸紗以數台可控制溫度的納爾遜輥延伸。一段延伸係在 2 5 °C下進行2 · 8倍延伸。另外加熱至1 1 5 t且進行5 · 0倍延 伸，製得延伸紗。所得纖維之物性如表1所示。而且，使 所得纖維以Η編織機編織’ i平估耐割傷性。結果併於表1 表示。 (實施例2) 使實施例1之延伸紗加熱至1 2 5 °C，且進行1 . 3倍延伸 。所得纖維之物性如表1表示。同樣地所得纖維以圓編織 機編織’評估耐割傷性。結果倂於表1所示。 馨 (比較例1〜4 ) 市售的耐龍纖維、聚酯纖維、聚乙烯纖維、聚丙烯纖 維之特性倂於表1所示。同樣地以圓編織機編織，評估耐 割傷性。結果倂於表1所示。A = (Calculation of cotton before sample test 値 + Calculation of cotton before sample test 値) / 2 Indtex = (Calculation of sample 値 + A) / A The cutting machine used in this evaluation is a spiral cut by 0LFA company Machine L type uses φ 45_. The material is SKS-7 tungsten steel with a knife thickness of 0.3mm. In addition, the test load was evaluated at 320 grams. (Dispersion evaluation of mortar premix) Put a mixture of sand and cement (S / C = 40) in a vinylon bag, mix each with 0.1% fiber, and measure the amount of mixture until the fiber ball is produced. The fibers can only be put in a dispersed state and stirred for 30 minutes to determine the occurrence of lumps of more than 5mm and the formation of fiber balls. This test was repeated 5 times to calculate the average radon as the critical mixing amount. (Mortar Bending Test) The premix material with the maximum mixing amount obtained by evaluating the dispersibility of the mortar premix was mixed with water at a water-to-cement ratio of 45% and stirred for 2 minutes. Test specimens were made with a mortar of 10x10x40 (cm). The health period is 14 days. The bending test condition is that the bending speed is 1/1 500 of the span, and a 4-point bending test with a comparative span of 30 cm is performed. Then, in order to confirm the effect of the fiber, the load is compared at a position of 2mm bending at the central displacement point as the toughness property of the fiber. (Collapse test) -15- 200408738 The resin of the present invention is bundled with resin or hot-melt fiber to make A single-fiber type organic fiber was obtained. The collapse test was made by mixing the fine structure with cement for 1 minute, then adding the coarse structure with a maximum diameter of 20mm and mixing with water for 2 minutes, and adding single-fiber organic fibers and water reducing agent to make concrete mortar. Each mix ratio is 50% cement ratio, 50% fine structure material ratio, unit water content is 190 kg / m3, maximum coarse structure diameter is 2 Omm, fiber mixing amount is 1 ν ο 1%, water reducing agent is polycarboxylate The amount of acid-based cement is 2%. The slump test is measured with i IS-A1 10 as a benchmark. (Concrete Bending Test) φ Based on the concrete mortar obtained from the collapse test: [C I-SF4 "Test method for flexural strength and bending roughness of fiber-reinforced concrete" is used as a basis to prepare 10x10x40 (cm) test specimens. The number of raising birthdays is 28 days. The bending test condition is that the bending speed is 1 / 1,500 of the span, and a 4-point bending test with a span of 30 cm is performed. The evaluation item evaluates the maximum bending strength and the bending strength converted to 2mm. [Examples] The present invention will be described below by way of examples. β (Example 1) A high-density ethylene having a weight average molecular weight of 15,000, a weight average molecular weight to number average molecular weight ratio of 2.3, and a branch chain having 5 or more carbon lengths at 0.4 carbons The spinning mold made of free φ0.8_ and 390Η was extruded at a speed of 0.5 g / nnn at a single hole at 29CTC. The extruded fiber passed through a 15 cm heat preservation zone, was cooled at 20 ° C with a 0.5 m / s quenching agent, and was taken up at a speed of 300 m / nnn. The unstretched 200408738 yarn was stretched with several temperature-controllable Nelson rolls. An extension is performed at 2 · 8 times at 25 ° C. It was further heated to 1 15 t and stretched to 5.0 times to obtain a stretched yarn. The physical properties of the obtained fibers are shown in Table 1. Furthermore, the obtained fiber was knitted with a reed knitting machine'i to estimate cut resistance. The results are shown in Table 1. (Example 2) The stretching yarn of Example 1 was heated to 125 ° C and stretched 1.3 times. The physical properties of the obtained fibers are shown in Table 1. Similarly, the obtained fiber was woven with a circular knitting machine to evaluate the cut resistance. The results are shown in Table 1. Xin (Comparative Examples 1 to 4) Table 1 shows the characteristics of commercially available nylon fibers, polyester fibers, polyethylene fibers, and polypropylene fibers. Weaving was similarly performed on a circular knitting machine, and the cut resistance was evaluated. The results are shown in Table 1.
表1 實驗 種類 纖度 (dtex) 強度 (cN/dtex) 彈性模數 (cN/dtex) 指數値 實施例1 本發明 438 18.0 820 3.6 實施例2 本發明 336 19.1 890 3.8 比較例1 耐龍 467 7.3 44 2.4 比較例2 聚酯 444 7.4 106 2.5 比較例3 聚乙烯 425 7·1 129 2.2 比較例4 聚丙烯 445 8.1 69 2.3 -17- 200408738 表2 指數値 實施例1 3.2 實施例2 3.4 比較例1 2.0 比較例2 2.1 比較例3 1.9 比較例4 1.9 使用實施例1、2及比較例1〜4之原紗，使用編織機 # 以習知方法作成手套。耐割傷評估之結果如表2表示。與 比較例1〜4相比，實施例1或2可得優異的耐割傷水準的 結果。 使纖維全體分纖或合紗成440dtex± 40dt ex，作成編織 密度經緯皆爲4 0條/ 2 5 mm之平織物。切成所得織物，作成 耐割傷性基體中材。組合表皮材以作成耐割傷性基體且評 估耐割傷性時，可得良好的結果。 (實施例3 ) ^ 使重量平均分子量115,0 0 0、重量平均分子量與數量 平均分子量之比爲2.3、具有5個以上碳長度的支鏈於碳爲 1,000個時爲0.4個之高密度乙烯自由Φ0.8 mm、39 0H所成 的紡紗模具、在290 °C下以單孔吐出量〇.5g/mi η之速度押 出。押出的纖維通過15cm之保溫區間，再於20 °C下、以 0.5m/s之急冷劑冷卻，以30 0m/min之速度捲取。使該未延 伸紗以數台可控制溫度的納爾遜輥延伸。一段延伸係在 - 1 8 - 200408738 2 5 °C下進行2 · 8倍延伸。另外加熱至1 1 5 °C且進行5 . 0倍延 伸，製得延伸紗。單纖維斷裂強度爲18 . OcN/dt ex，拉伸彈 性模數爲820cN/dt ex，單纖維纖度爲1 . 5dtex，截面形狀 爲圓形。該纖維切成1 2mm，實施灰漿預混物之分散性評估 與灰漿彎曲試驗。而且，於坍塌試驗與混凝土彎曲試驗用 中製作使單纖維集束6d t ex以環氧樹脂硬化（樹脂含浸量 7 1wt%)者。 (實施例4 ) 使實施例3之延伸紗加熱至1 2 5 °C，且進行1 . 3倍延伸 。單纖維斷裂強度爲 19 . lcN/dt ex，拉伸彈性模數爲 890 cN/dtex，單纖維纖度爲1 . 4dtex，截面形狀爲圓形。該 纖維切成1 2miii，實施灰漿預混物之分散性評估與灰漿彎曲 試驗。而且，於坍塌試驗與混凝土彎曲試驗用中製作使單 纖維集束67 2dtex以環氧樹脂硬化（樹脂含浸量75wt%)者。 (比較例5 ) 使作爲單纖維斷裂強度爲29.8cN/dtex，拉伸彈性模 數爲1 008 cN/dtex，單纖維纖度爲1.2dtex，截面形狀爲1 :7之橢圓形之超高分子量聚乙烯纖維切成1 2mm，實施灰 漿預混物之分散性評估與灰漿彎曲試驗。而且，於坍塌試 驗與混凝土彎曲用中製作使超高分子量聚乙烯纖維880T以 環氧樹脂硬化（樹脂含浸量160wt%)者。 (比較例6 ) 使作爲單纖維斷裂強度爲7.5cN/dtex，拉伸彈性模數 爲240cN/dtex，單纖維纖度爲378dtex，截面形狀幾乎爲 200408738 圓形之超聚乙烯醇纖維切成1 2mm，實施灰漿預混物之分散 性評估與灰漿彎曲試驗。而且，於坍塌試驗與混凝土彎曲 ~ 用中使用斷裂強度爲 6. lcN/dtex，拉伸彈性模數爲 241.9cN/dtex，纖度爲165dtex之聚乙烯醇纖維。 灰漿預混物之分散性評估、灰漿彎曲試驗、坍塌試驗 、混凝土彎曲試驗之結果如表1所示。由表1可知，爲使 預混合之分散性高、可混入更多的纖維時，在灰漿彎曲試 驗可確知具高韌性之補強效果。而且，由坍塌試驗、彎曲 試驗可知，由於可控制樹脂附著量、樹脂附著量變小，可 · 賦予彎曲試驗之最大斷裂荷重値、2nim換算彎曲強度之高性 能。 表3 試驗項目 灰漿預混物之分 散性評估 灰漿彎曲試驗 坍塌試驗 .混凝土彎曲試驗 特性値 臨界混入量 彎曲2mm之荷重値 坍塌 最大彎曲強度 2mm換算彎曲強度 (vol%) (N/mm2) (cm) (N/mm2) (N/mm2) 實施例3 1.6 13.4 10.5 7.29 5.05 實施例4 1.4 12.9 8.5 7.55 5.25 比較例5 0.9 6.1 11.0 7.38 4.99 比較例6 2.1 10.5 14.5 6.21 3.21 然後，以熱熔融紗被覆本發明之纖維的單纖維型有機 纖維之特性以實施例5與比較例7相比。該特性以坍塌試 驗與混凝土彎曲試驗評估。 (實施例5) 使實施例3所得的本發明纖維以纖度！ 90T之芯PP、 -20- 200408738 鞘PE之芯核型熱熔融纖維進行被覆。使所得單纖維型有機 纖維切成30mm，評估特性。此處，被覆段數爲10段/30mm (比較例7) 使用比較例5使用的超高分子量聚乙烯纖維，以纖度 19 0T之芯PP、鞘PE之芯鞘型熱熔融纖維進行被覆。使所 得單纖維型有機行爲切成3 0mm，評估特性。此處，被覆段 數爲10段/30mm。 坍塌試驗、混凝土彎曲試驗之結果如表2所示。由表2 φ 可知，坍塌損失變小。 表4 試驗項目 坍塌試驗 混凝土彎曲試驗 特性値 坍塌 最大彎曲強度 2mm換算彎曲強度 (cm) (N/mm2) (N/mm2) 實施例5 3.5 6.72 4.21 比較例7 0 6.89 4.44 【發明之效果】 Φ 藉由本發明時，可製造耐割傷性優異、新穎的使用聚 乙烯纖維之耐割傷性編織物、手套及背心。 首先，藉由本發明時，尤其纖維截面形狀製作預混合 物灰漿時，形成分散性優異的纖維，且由於具有高強度、 可賦予高韌性。而且，即使以集束材等賦予單纖維型有機 纖維形狀，可賦予作爲混凝土補強材之高斷裂荷重、高韌 性，且可降低坍塌損失情形。 -2 1-Table 1 Experimental types Density (dtex) Strength (cN / dtex) Modulus of elasticity (cN / dtex) Index 値 Example 1 The present invention 438 18.0 820 3.6 Example 2 The present invention 336 19.1 890 3.8 Comparative example 1 Nylon 467 7.3 44 2.4 Comparative Example 2 Polyester 444 7.4 106 2.5 Comparative Example 3 Polyethylene 425 7 · 1 129 2.2 Comparative Example 4 Polypropylene 445 8.1 69 2.3 -17- 200408738 Table 2 Index 値 Example 1 3.2 Example 2 3.4 Comparative Example 1 2.0 Comparative Example 2 2.1 Comparative Example 3 1.9 Comparative Example 4 1.9 Using the raw yarns of Examples 1, 2 and Comparative Examples 1 to 4, a knitting machine # was used to make gloves in a conventional manner. The results of the cut resistance evaluation are shown in Table 2. Compared with Comparative Examples 1 to 4, Example 1 or 2 gave excellent results of cutting resistance. The whole fiber is split or spun into 440dtex ± 40dt ex, and a plain fabric with a weaving density of 40 warps and 25 mm is made. The obtained fabric was cut into a cut-resistant base material. Good results were obtained when the skin material was combined to form a cut-resistant substrate and the cut resistance was evaluated. (Example 3) ^ High-density ethylene having a weight-average molecular weight of 115,00, a ratio of weight-average molecular weight to number-average molecular weight of 2.3, and a branch chain having 5 or more carbon lengths when the number of carbons is 1,000. The spinning mold made of free Φ0.8 mm and 39 0H was extruded at a speed of 0.5 g / mi η at a single hole discharge rate of 290 ° C. The extruded fiber passes through a 15 cm heat preservation zone, is cooled at 20 ° C with a 0.5 m / s quenching agent, and is wound up at a speed of 300 m / min. The unstretched yarn was stretched by a plurality of temperature-controllable Nelson rolls. One-stage extension is performed at 2 · 8 times at-1 8-200408738 2 5 ° C. It was additionally heated to 115 ° C and stretched at 5.0 times to obtain a stretched yarn. The single fiber break strength is 18. OcN / dt ex, the tensile elastic modulus is 820 cN / dt ex, the single fiber fineness is 1.5 dtex, and the cross-sectional shape is circular. This fiber was cut into 12 mm, and the dispersion preliminarily evaluated for the mortar premix and the mortar bending test were performed. In addition, in a collapse test and a concrete bending test, a single fiber bundle 6d t ex was hardened with an epoxy resin (resin impregnation amount 71 wt%). (Example 4) The stretching yarn of Example 3 was heated to 125 ° C and stretched 1.3 times. The breaking strength of the single fiber is 19. lcN / dt ex, the tensile elastic modulus is 890 cN / dtex, the single fiber fineness is 1.4 dtex, and the cross-sectional shape is circular. This fiber was cut into 12miii, and the dispersibility evaluation and mortar bending test of the mortar premix were performed. In addition, in a collapse test and a concrete bending test, a single fiber bundle 67 2dtex was cured with an epoxy resin (resin impregnation amount 75% by weight). (Comparative Example 5) An oval ultrahigh molecular weight polymer having a single fiber breaking strength of 29.8 cN / dtex, a tensile elastic modulus of 1 008 cN / dtex, a single fiber fineness of 1.2 dtex, and a cross-sectional shape of 1: 7 Ethylene fibers were cut into 12 mm, and the dispersibility evaluation and mortar bending test of the mortar premix were performed. In addition, in the collapse test and concrete bending, those made of ultra high molecular weight polyethylene fibers 880T were hardened with epoxy resin (resin impregnation amount 160% by weight). (Comparative Example 6) The breaking strength of a single fiber was 7.5 cN / dtex, the tensile modulus of elasticity was 240 cN / dtex, the single fiber fineness was 378 dtex, and the cross-sectional shape was almost 200,408,738. A circular ultra-polyvinyl alcohol fiber was cut into 1 2 mm , Carry out dispersion evaluation of mortar premix and mortar bending test. Moreover, in the collapse test and concrete bending ~ polyvinyl alcohol fibers with a breaking strength of 6. lcN / dtex, a tensile elastic modulus of 241.9 cN / dtex, and a fineness of 165 dtex are used. The results of the evaluation of the dispersion of the mortar premix, the mortar bending test, the collapse test and the concrete bending test are shown in Table 1. As can be seen from Table 1, in order to make the pre-mixing highly dispersive and allow more fibers to be mixed in, the mortar bending test can confirm the reinforcing effect with high toughness. In addition, from the slump test and the bending test, it can be known that the resin adhesion amount can be controlled and the resin adhesion amount can be reduced, so that the maximum breaking load of the bending test can be imparted, and the high performance of 2nim conversion bending strength can be provided. Table 3 Test items Dispersion evaluation of mortar premix Mortar bending test Collapse test. Concrete bending test characteristics 値 critical mixing amount load 2mm bending 値 collapse maximum bending strength 2mm conversion bending strength (vol%) (N / mm2) (cm ) (N / mm2) (N / mm2) Example 3 1.6 13.4 10.5 7.29 5.05 Example 4 1.4 12.9 8.5 7.55 5.25 Comparative Example 5 0.9 6.1 11.0 7.38 4.99 Comparative Example 6 2.1 10.5 14.5 6.21 3.21 Then covered with hot-melt yarn The characteristics of the single-fiber type organic fiber of the fiber of the present invention are compared with those of Example 5 and Comparative Example 7. This characteristic is evaluated by the collapse test and the concrete bending test. (Example 5) The fiber of the present invention obtained in Example 3 was made fine! 90T core PP, -20-200408738 sheath PE core core type hot melt fiber. The obtained single-fiber type organic fiber was cut into 30 mm, and characteristics were evaluated. Here, the number of coating steps was 10 steps / 30 mm (Comparative Example 7) The ultra-high molecular weight polyethylene fibers used in Comparative Example 5 were coated with a core PP of a core fineness of 19 0T and a core-sheath-type hot-melt fiber of sheath PE. The obtained single-fiber type organic behavior was cut to 30 mm, and the characteristics were evaluated. Here, the number of covered sections is 10 sections / 30mm. The results of the slump test and concrete bending test are shown in Table 2. As can be seen from Table 2 φ, the collapse loss becomes smaller. Table 4 Test items Collapse test Concrete bending test characteristics 最大 Collapse maximum bending strength 2mm Conversion bending strength (cm) (N / mm2) (N / mm2) Example 5 3.5 6.72 4.21 Comparative example 7 0 6.89 4.44 [Effect of the invention] Φ According to the present invention, it is possible to produce a novel cut-resistant knit fabric, gloves, and vest using polyethylene fibers which are excellent in cut resistance. First, in the present invention, particularly when a premixed mortar is produced in the shape of the fiber cross section, fibers having excellent dispersibility are formed, and since they have high strength, they can impart high toughness. In addition, even if a single-fiber type organic fiber is provided with a bundle material or the like, it can provide a high breaking load and high toughness as a concrete reinforcing material, and can reduce the collapse loss. -twenty one-