JP2010168715A5

JP2010168715A5 -

Info

Publication number: JP2010168715A5
Application number: JP2009287004A
Authority: JP
Filing date: 2009-12-17
Publication date: 2012-04-19
Anticipated expiration: 2029-12-17

Description

〔ポリエチレン樹脂の結晶子サイズの測定方法〕
結晶子サイズは、粉末Ｘ線回折法で測定した半価幅から、Ｓｃｈｅｒｒｅｒの式により算出されたものである。算出方法は、リガク社製のＲＩＮＴ−２５００を用い、ＰＥの面指数（１１０）のピークについて、付属の結晶子サイズ計算プログラムＪＡＤＥ６．０により算出する。具体的な条件は、線源としてＣｕＫα線（波長０．１５４ｎｍ）、発生電圧および電流を４０ｋＶ・１２０ｍＡ、掃引速度を１０°／分とした。測定時の試料の設置方法は、試料ホルダーのスリットの長さ方向と平行になるように繊維束を張って取り付け、繊維束をＸ線の入射方向に対して垂直になるようにした。 [Method for measuring crystallite size of polyethylene resin]
Crystallite size, the half width was measured by powder X-ray diffraction method, which has been calculated by the equation of S c herrer. As a calculation method, RINT-2500 manufactured by Rigaku Corporation is used, and the peak of the plane index (110) of PE is calculated by the attached crystallite size calculation program JADE 6.0. Specific conditions were a CuKα ray (wavelength 0.154 nm) as a radiation source, a generated voltage and current of 40 kV · 120 mA, and a sweep rate of 10 ° / min. The sample was placed at the time of measurement by attaching a fiber bundle so as to be parallel to the length direction of the slit of the sample holder so that the fiber bundle was perpendicular to the incident direction of X-rays.

Claims

Having a sheath containing a polyethylene resin and a core-sheath composite fiber having a core containing a resin component having a melting point higher than that of the polyethylene resin, and a hydrophilizing agent attached to the surface of the core-sheath composite fiber, A non-woven fabric having a heat-sealed portion where the intersection of the constituent fibers is heat-sealed,
The core-sheath type composite fiber includes a heat-extensible composite fiber whose length is extended by heating,
The heat-extensible conjugate fiber has a hydrophilicity gradient in the thickness direction and / or plane direction of the nonwoven fabric ,
The non-woven fabric has a thin part formed by embossing and a thick part other than that, and the thin part or its vicinity is hydrophilic, and the top part of the thick part Is a non-woven fabric whose hydrophilicity is lower than that of the thin part or the vicinity thereof .

The nonwoven fabric according to claim 1, wherein the hydrophilizing agent includes polyoxyethylene alkylamide and / or alkylbetaine.

Having a sheath containing a polyethylene resin and a core-sheath composite fiber having a core containing a resin component having a melting point higher than that of the polyethylene resin, and a hydrophilizing agent attached to the surface of the core-sheath composite fiber, A non-woven fabric having a heat-sealed portion where the intersection of the constituent fibers is heat-sealed,
The core-sheath type composite fiber includes a heat-extensible composite fiber whose length is extended by heating,
The heat-extensible conjugate fiber has a hydrophilicity gradient in the thickness direction and / or plane direction of the nonwoven fabric,
The non-woven fabric has a thin portion formed by embossing and a thick portion other than that,
The hydrophilizing agent includes polyoxyethylene alkylamide and / or alkylbetaine, and the thick portion is more than the thin portion or the vicinity thereof than the polyoxyethylene alkylamide and / or alkylbetaine. Nonwoven fabric with a high abundance ratio .

The nonwoven fabric according to claim 3, wherein the hydrophilizing agent comprises polyoxyethylene alkylamide and alkylbetaine.

Having a sheath containing a polyethylene resin and a core-sheath composite fiber having a core containing a resin component having a melting point higher than that of the polyethylene resin, and a hydrophilizing agent attached to the surface of the core-sheath composite fiber, A nonwoven fabric obtained by heat-treating a web or nonwoven fabric containing fibers whose hydrophilicity decreases by heat, wherein the polyethylene resin has a crystallite size of 100 to 200 mm, and reducing the hydrophilicity of a part of the web or nonwoven fabric.

The nonwoven fabric according to claim 5 , wherein the hydrophilizing agent is at least one selected from the group consisting of anionic, cationic and zwitterionic surfactants.

It has a thin part formed by embossing and a thick part other than that, and the thick part is a hydrophilicity-reduced part, and the thin part and / or its vicinity is a hydrophilic part. The nonwoven fabric according to claim 5 or 6 .

The nonwoven fabric according to claim 7 , wherein one surface is hydrophilic and the other surface is more hydrophobic.

Having a sheath part made of polyethylene resin and a core-sheath type composite fiber having a core part made of a resin component having a melting point higher than that of the polyethylene resin, and a hydrophilizing agent attached to the surface of the core-sheath type composite fiber, The polyethylene resin has a crystallite size of 100 to 200 mm, heat treatment is performed on a web or a nonwoven fabric containing fibers whose hydrophilicity is lowered by heat, and a nonwoven fabric in which the hydrophilicity of a part of the web or nonwoven fabric is reduced is obtained. Nonwoven fabric manufacturing method.

The method for producing a nonwoven fabric according to claim 9 , wherein the temperature of the heat treatment is in a range from a temperature lower by 10 ° C. than a melting point of the polyethylene resin constituting the sheath part to a melting point of the resin component constituting the core part.

Having a sheath part made of polyethylene resin and a core-sheath type composite fiber having a core part made of a resin component having a melting point higher than that of the polyethylene resin, and a hydrophilizing agent attached to the surface of the core-sheath type composite fiber, The polyethylene resin has a crystallite size of 100 to 200 mm, and is subjected to heat treatment on a web or non-woven fabric containing a fiber whose hydrophilicity is lowered by heat to reduce the hydrophilicity of a part of the web or non-woven fabric. How to control.