(JP2014030730W) [Solution] The meltblown nonwoven fabric of the present invention comprises thermoplastic resin fibers having an average fiber diameter of 0.1 to 10 µm, has a bulk density of not more than 36 kg/m 3 and has an air permeability, as measured by a Frazier type method at basis weight of 200 g/m 2 , of 3 to 100 cc/cm 2 /sec. [Effect] The meltblown nonwoven fabric of the present invention has a low bulk density and is excellent in sound absorption performance, oil adsorption performance, heat insulation performance, dust collection performance and filtration performance. Since the meltblown nonwoven fabric of the present invention can be formed from one kind of a resin composition, it can be simply and easily produced as compared with the case of using mixed fibers or conjugated fibers formed from many kinds of resins, and the resulting meltblown nonwoven fabric can have uniformity and no variability of properties. The sound absorbingmaterial of the present invention is obtained by a simple process and is excellent in sound absorption performance, so that it can be preferably used as a sound absorbing material of the living environment or transportation means, and weight lightening or thinning of a sound absorbing material can be achieved. (From EP2889407 A1)
(JP5503816) Claims machine translated from Japanese 1. It consists of the thermoplastic resin fiber where average fiber diameter is 0.1-10 .micro.m, Bulk density to be below 36kg/m3, at the same time, Being the melt blown nonwoven fabrics where air permeability the eye attaching measured with the [hurajiru] shape method with 200g/m2 is 3-100cc/cm2/sec, The aforementioned thermoplastic resin fiber, being formed from the thermoplastic resin composition which includes the crystalline germ medicine, it becomes, the melt blown nonwoven fabrics. 2. The thermoplastic resin fiber, being formed from the thermoplastic resin composition where semi-crystallization time is 400 seconds less than, it becomes, in claim 1 the melt blown nonwoven fabrics of statement. 3. The aforementioned thermoplastic resin composition, the 0.01-10 weight section includes the crystalline germ medicine vis-a-vis the thermoplastic resin 100 weight section, in claim 1 the melt blown nonwoven fabrics of statement. 4. The crystalline germ medicine, is the phosphoric acid nuclear medicine, in claim 1 the melt blown nonwoven fabrics of statement. 5. The thermoplastic resin is the polyolefine, in claim 1 the melt blown nonwoven fabrics of statement. 6. The thermoplastic resin is the propylene polymer, in claim 1 the melt blown nonwoven fabrics of statement. 7. Thickness is 1-2000mm, the eye attaching is 10-2000g/m2, in claim 1 the melt blown nonwoven fabrics of statement. 8. The fiber other than the thermoplastic resin fiber which is formed in the melt blown nonwoven fabrics 100 weight section, by melt blown method is included 10 weight sections or less, in claim 1 the melt blown nonwoven fabrics of statement. 9. The melt blown nonwoven fabrics of statement the span bond nonwoven fabrics being laminated by one side, at least in either of the claim 1-8, the nonwoven fabrics layered product which becomes. 10. The acoustic material which includes the melt blown nonwoven fabrics of statement in either of the claim 1-8. 11. The oil absorbant which includes the melt blown nonwoven fabrics of statement in either of the claim 1-8. 12. The heat insulation material which includes the melt blown nonwoven fabrics of statement in either of the claim 1-8. 13. The filter which includes the melt blown nonwoven fabrics of statement in either of the claim 1-8. 14. The acoustic material which consists of the nonwoven fabrics layered product of statement in claim 9.
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