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TW201508118A - 非織造紙巾及其製備方法 - Google Patents

非織造紙巾及其製備方法 Download PDF

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Publication number
TW201508118A
TW201508118A TW102131252A TW102131252A TW201508118A TW 201508118 A TW201508118 A TW 201508118A TW 102131252 A TW102131252 A TW 102131252A TW 102131252 A TW102131252 A TW 102131252A TW 201508118 A TW201508118 A TW 201508118A
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Taiwan
Prior art keywords
nonwoven
paper towel
fibers
nonwoven fabric
webs
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TW102131252A
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English (en)
Inventor
Jung-Chi Tai
Ho-Hsi Yang
Chien-Chung Su
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Kang Na Hsiung Entpr Co Ltd
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Publication date
Application filed by Kang Na Hsiung Entpr Co Ltd filed Critical Kang Na Hsiung Entpr Co Ltd
Priority to TW102131252A priority Critical patent/TW201508118A/zh
Priority to CN201310491473.1A priority patent/CN104420074A/zh
Priority to US14/216,606 priority patent/US20150065003A1/en
Priority to EP14160938.8A priority patent/EP2842732B1/en
Priority to JP2014117776A priority patent/JP2015048569A/ja
Publication of TW201508118A publication Critical patent/TW201508118A/zh

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Abstract

一種非織造紙巾，包含二張長纖維網、設置在該等長纖維網間的紡黏不織布及設置在該等長纖維網間的複數條纖維素纖維，其中，該等長纖維網、該等纖維素纖維及該紡黏不織布相互糾結。本發明非織造紙巾透過使用紡黏不織布可提升抗張強度及伸長率。且本發明製備方法可於一條生產線中結合纖維素纖維、紡黏不織布及長纖維網，並經水刺處理而製得非織造紙巾。

Description

非織造紙巾及其製備方法
本發明是有關於一種吸濕用不織布，特別是指一種包含長纖維網、紡黏不織布及纖維素纖維的非織造紙巾。
非織造紙巾是日常生活必需用品，用來擦拭並移除物體表面附著的污漬。一般非織造紙巾大約分為乾紙巾及濕紙巾。但不論是乾紙巾或濕紙巾皆需滿足柔軟性、抗張強度(tensile strength)、吸收率以及表面需平滑柔順等特性。
CN1344827專利案揭示一種疏棉網與氣流成網的複合無紡布的製程。該專利案於說明書第7/10頁揭示該製程包含以下步驟：先將聚合物纖維經由第一疏棉機進行疏棉處理，形成第一疏棉網層；再將一纖維、粉末或顆粒狀材料經第一氣流成網裝置進行氣流成網，而在該第一疏棉網層上形成第一氣流成網網層；最後，固結而成一複合無紡布，其中，該固結方式可採用水刺法。然，雖該複合無紡布具有不錯的吸濕性，但該複合無紡布的抗張強度不佳，導致應用至抽取式紙巾，於抽取時，易變形，因此，對於現今業界對該非織造紙巾的抗張強度要求更高而言， 上述專利案所揭示的複合無紡布已無法滿足業界對於抗張強度的要求。
有鑑於上述，提供一更佳抗張強度繼而不會變形的紙巾，是此技術領域相關技術人員可再突破的課題。
因此，本發明之第一目的，即在提供一種抗張強度及伸長率佳的非織造紙巾。
於是本發明非織造紙巾，包含：二張長纖維網；設置在該等長纖維網間的紡黏不織布(spunbond nonwoven)；及設置在該等長纖維網間的複數條纖維素纖維；其中，該等長纖維網、該等纖維素纖維及該紡黏不織布相互糾結。
本發明之第二目的，即在提供一種非織造紙巾的製備方法。
於是，本發明非織造紙巾的製備方法，包含以下步驟：(a)提供一紡黏不織布及複數條纖維素纖維；(b)提供二張長纖維網；(c)將該紡黏不織布及該等纖維素纖維置於該等長纖維網間，並進行水刺處理。
本發明之功效在於：本發明透過使用紡黏不織布可提升抗張強度及伸長率。且本發明製法可於一條生產 線中結合纖維素纖維、紡黏不織布及長纖維網，並經水刺處理而製得非織造紙巾。
本發明非織造紙巾，包含：二張長纖維網；設置在該等長纖維網間的紡黏不織布；及設置在該等長纖維網間的複數條纖維素纖維；其中，該等長纖維網、該等纖維素纖維及該紡黏不織布相互糾結。
該非織造紙巾的基重範圍為25g/m2至150g/m2。該非織造紙巾的厚度範圍為0.1mm至10mm。
以下將分別針對本發明非織造紙巾中的各個成份進一步說明：
[長纖維網]
該長纖維網的製備方式可採以往的方式，例如，將一包括複數條長纖維的混合物經由梳理(carding)處理所形成。該長纖維網的基重範圍為5g/m2至100g/m2。該長纖維網的厚度範圍為0.1mm至10mm。
該等長纖維是擇自於天然纖維、化學纖維，或此等一組合。該天然纖維是擇自於植物纖維、動物纖維，或此等一組合。該植物纖維可單獨或混合使用，且該植物纖維例如但不限於種子纖維(如棉花等)、韌皮纖維(如亞蔴 或大蔴等)、葉脈纖維(如馬尼拉蔴等)或果實纖維(如椰子)等。該動物纖維可單獨或混合使用，且該動物纖維例如但不限於獸皮纖維或蠶絲纖維等。該化學纖維是擇自於再生纖維、半合成纖維、合成纖維，或此等一組合。該再生纖維可單獨或混合使用，且該再生纖維例如但不限於嫘縈(rayon)等。該半合成纖維可單獨或混合使用，且該半合成纖維例如但不限於醋酸纖維素等。該合成纖維可單獨或混合使用，且該合成纖維例如但不限於聚乙烯(polyethylene，簡稱PE)、聚丙烯(polypropylene，簡稱PP)、聚對苯二甲酸乙二酯(polyethylene terephthalate，簡稱PET)，或聚醯胺(polyamide)等。以該非織造紙巾的成本考量，較佳地，該等長纖維的材質分別包括至少一種由下列群組所組成的材料：聚乙烯、聚丙烯、聚對苯二甲酸乙二酯、嫘縈及棉纖維。
較佳地，以該非織造紙巾的總量為100wt%計，該等長纖維的使用量總和範圍為10wt%至80wt%。該等長纖維的細度範圍分別為1丹尼(dyne)至6丹尼。
[紡黏不織布(spunbond nonwoven)]
該紡黏不織布的製備方式可採以往的方式，例如，將一聚合物經熱融、擠出、拉伸及冷卻而形成連續長絲後，將該長絲鋪設成網，形成一長絲網，接著，經過加固處理而形成，其中，該加固處理例如但不限於熔噴法、熱黏合法、化學黏合法或機械加固法。該聚合物例如但不限於聚乙烯、聚丙烯、聚對苯二甲酸乙二酯，或，包含聚 乙烯及聚丙烯的複合聚合物。較佳地，以該非織造紙巾的總量為100wt%計，該紡黏不織布的使用量總和範圍為8wt%至50wt%。
[纖維素纖維]
較佳地，以該非織造紙巾的總量為100wt%計，該等纖維素纖維的使用量總和範圍為5wt%至60wt%。該等纖維素纖維的細度範圍分別為0.1丹尼至10丹尼。較佳地，該等纖維素纖維的長度範圍為1mm至5mm。
該纖維素纖維的製備方法可採以往的方式，例如，從紙漿(pulp)或木漿(wood pulp)所獲得。
[非織造紙巾的製備]
本發明非織造紙巾的製備方法，包含以下步驟：(a)提供一紡黏不織布及複數條纖維素纖維；(b)提供二張長纖維網；(c)將該紡黏不織布及該等纖維素纖維置於該等長纖維網間，並進行水刺(water-jet)處理。
該紡黏不織布、纖維素纖維及長纖維網如上所述，故不再贅述。較佳地，以該非織造紙巾的總量為100wt%計，該纖維素纖維的使用量總和範圍為5wt%至60wt%。
該水刺處理指的是利用高壓水流垂直射向該長纖維網，使該水流可將該等長纖維網中的長纖維與紡黏不織布及該等纖維素纖維相互纏結而成的過程。該水刺處理可採用以往水刺裝置來進行。
本發明將就以下實施例來作進一步說明，但應瞭解的是，該等實施例僅為例示說明之用，而不應被解釋為本發明實施之限制。
<實施例> <實施例1>
將一包含24wt%的聚丙烯紡黏不織布(基重13g/m2)與50wt%的紙漿(長度為1至5mm)混合，並進行氣流成網處理(氣流流量為130CMM)及熱處理(溫度為135℃)，形成一混合纖維布。將26wt%的實心聚對苯二甲酸乙二酯長纖維經由梳理處理形成一張長纖維網(基重22g/m2)。將該混合纖維布置於二張長纖維網間，並進行水刺處理(水壓為50bar)，即可獲得一非織造紙巾。
<比較例1>
將40wt%的實心聚對苯二甲酸乙二酯長纖維經由梳理處理形成一張長纖維網(基重22g/m2)。將60wt%的紙漿(長度為1至5mm)置於二張長纖維網間，並進行水刺處理(水壓為50bar)，即可獲得一非織造紙巾。
<檢測項目>
基重(Basis weight，g/m2)：依據美國材料與試驗學會(American Society for Testing and Materials,ASTM)編號D3776-85的檢測標準在溫度23±0.5℃、相對溼度65±2%，一般大氣壓力下，在電子天評量測試片質量，並計算試片單位面積質量。
抗張強度(tensile strength，Kgf/25mm)：將實施 例1及比較例1的非織造紙巾剪裁為長度150mm及寬度25.4mm的試片，依ASTM D-1117規定進行測試，單位為Kgf/25mm。
伸長率(%)：將實施例1及比較例1的非織造紙巾剪裁為長度150mm及寬度25.4mm的試片，依ASTM D-1117規定進行測試，單位為%。
由表1的數據結果可知，本發明實施例1的非織造紙巾具有紡黏不織布，確實可提升非織造紙巾的抗張強度及伸長率。而比較例1的非織造紙巾不具有紡黏不織布，其抗張強度及伸長率皆比實施例1的非織造紙巾差。
綜上所述，本發明透過使用紡黏不織布可提升抗張強度及伸長率。且本發明製法可於一條生產線中結合纖維素纖維、紡黏不織布及長纖維網，並經水刺處理而製得非織造紙巾，故確實能達成本發明之目的。
惟以上所述者，僅為本發明之較佳實施例而已，當不能以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。

Claims (6)

  1. 一種非織造紙巾，包含：二張長纖維網；設置在該等長纖維網間的紡黏不織布；及設置在該等長纖維網間的複數條纖維素纖維；其中，該等長纖維網、該等纖維素纖維及該紡黏不織布相互糾結。
  2. 如請求項1所述的非織造紙巾，其中，以該非織造紙巾的總量為100wt%計，該等纖維素纖維的使用量總和範圍為5wt%至60wt%。
  3. 如請求項1所述的非織造紙巾，其中，以該非織造紙巾的總量為100wt%計，該紡黏不織布的使用量範圍為8wt%至50wt%。
  4. 一種非織造紙巾的製備方法，包含以下步驟：(a)提供一紡黏不織布及複數條纖維素纖維；(b)提供二張長纖維網；(c)將該紡黏不織布及該等纖維素纖維置於該等長纖維網間，並進行水刺處理。
  5. 如請求項4所述的非織造紙巾的製備方法，其中，以該非織造紙巾的總量為100wt%計，該等纖維素纖維的使用量總和範圍為5wt%至60wt%。
  6. 如請求項4所述的非織造紙巾的製備方法，其中，以該非織造紙巾的總量為100wt%計，該紡黏不織布的使用量範圍為8wt%至50wt%。
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