| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermally expandable nonwoven fabric attaining high thermal expansibility with a smaller amount of thermal expansion substance to obtain a low-density nonwoven fabric having excellent properties such as light weight, high strength and durability and usable as a heat-insulating material, sound absorbing material, filter material, structure material, etc., and a method for producing the nonwoven fabric. SOLUTION: The thermally expandable nonwoven fabric is produced by a wet paper-making process using inorganic fibers and/or organic fibers as main components, and includes thermally expandable particles, a synthetic resin latex having an extension percentage of not less than 500% and an inorganic pigment having an average particle diameter of not less than 0.5μm and not more than 10μm. COPYRIGHT: (C)2011,JPO&INPIT
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