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发明授权
CN101553610B 无纺布 有权

无纺布
摘要：
本发明涉及一种无纺布，所述无纺布由热塑性弹性体纤维和热塑性聚烯烃纤维形成，其特征在于，热塑性弹性体纤维在以5000KJ/m2照射紫外线的前后，Lab色度图中b值的变化量为20以上，无纺布在以5000KJ/m2照射紫外线的前后，Lab色度图中b值的变化量为10以下，并且满足(式1)的关系。其中，w1：无纺布中的聚烯烃纤维的质量百分率(％)；r1：聚烯烃纤维的半径(μm)；ρ1：聚烯烃的密度(g/cm3)；w2：无纺布中的热塑性弹性体纤维的质量百分率(％)；r2：热塑性弹性体纤维的半径(μm)；ρ2：热塑性弹性体的密度(g/cm3)。
摘要（英）：

The invention provides a nonwoven fabric comprising a thermoplastic elastomer fiber and a thermoplastic polyolefin fiber, characterized in that a difference in b value in a Lab color system between before and after UV irradiation at 5000 kJ/m<2> in the thermoplastic elastomer fiber is 20 or more and a difference in b value in Lab color system between before and after UV irradiation at 5000 kJ/m<2> in the nonwoven fabric is 10 or less, and it satisfies the relationship of (Formula 1), wherein w1 represents a mass percentage (%) of the polyolefin fiber in the nonwoven fabric, r1 represents a radius (mum) of the polyolefin fiber, rho1 represents a density (g/cm<3>) of polyolefin, w2 represents a mass percentage (%) of the thermoplastic elastomer fiber in the nonwoven fabric, r2 represents a radius (mum) of the thermoplastic elastomer fiber, and rho2 represents a density (g/cm<3>) of thermoplastic elastomer.

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