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Invention Application
WO2021241367A1 摩擦帯電不織布、および、その製造方法 审中-公开

摩擦帯電不織布、および、その製造方法
Abstract:
発明が解決しようとする課題は、構成樹脂の異なる２種類以上の繊維が混在した摩擦帯電不織布であって、薄手であると共に、強度に優れる摩擦帯電不織布を提供することである。　本発明の摩擦帯電不織布は、構成樹脂が異なる２種類以上の繊維が混在した摩擦帯電不織布であって、厚さが１．２ｍｍ以下であり、最大点強度が４３．０Ｎ／５０ｍｍよりも高い。また、本発明の摩擦帯電不織布の製造方法は、構成樹脂が異なる２種類以上の繊維が混在した摩擦帯電不織布の製造方法であって、 （１）構成樹脂の異なる２種類以上の繊維が混在したウェブを用意する工程、 （２）前記ウェブへ水流絡合処理を施して、水流絡合ウェブを調製する工程、 （３）前記水流絡合ウェブを厚さ方向に変形させると共に、前記厚さ方向に変形させた後の水流絡合ウェブに対し前記厚さ方向と垂直を成す方向へ張力を作用させることで、前記水流絡合ウェブの構成繊維同士を擦り合せる工程、 を有する。
Abstract(English):

The problem to be solved by the present invention is providing a friction-charging nonwoven fabric in which two or more types of fibers having differing constituent resins are mixed, the nonwoven fabric being thin and having superior strength.　The present invention is a friction-charging nonwoven fabric in which two or more types of fibers having differing constituent resins are mixed, the thickness of the nonwoven fabric being 1.2 mm or less, and the maximum point strength being greater than 43.0 N/50 mm. Moreover, the present invention is a method for manufacturing a friction-charging nonwoven fabric in which two or more types of fibers having differing constituent resins are mixed, said method having: (1) a step for preparing a web in which two or more types of fibers having different constituent resins are mixed; (2) a step for performing a hydroentangling process on the web and formulating a hydroentangled web; and (3) a step for deforming the hydroentangled web in the thickness direction and applying, to the hydroentangled web that was deformed in the thickness direction, tensile force in a direction perpendicular to the thickness direction, whereby constituent fibers of the hydroentangled web are twisted together.

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