Mitsui Chemicals, Inc.

Mitsui Chemicals Asahi Life Materials Co., Ltd.

Koichi Shimada

Kenichi Suzuki

Shin Fukuda

Taiichiro Ichikawa

Shigeyuki Motomura

Akio Matsubara

Naosuke Kunimoto

Katsuhiko Koike

Shouichi Takaku

Tetsuya Yokoyama

Yusuke Sekioka

Shohei Saita

Kosuke Ota

Sho Iihama

A nonwoven fabric layered body includes a first nonwoven fabric layer including a crimped fiber (A), which is a fiber made of a thermoplastic polymer and which has an average crimp diameter of 800 μm or less; and a hydrophilic agent.

Nonwoven fabric layered body, composite layered body, and cover sheet

A spunbonded non-woven fabric includes a fiber including a propylene homopolymer having a melting point of 140&#xb0; C. or more, a polyethylene having a density of from 0.941 g/cmto 0.970 g/cm, and at least one polymer selected from the group consisting of a polymer represented in (I) and a polymer represented in (II). In the spunbonded non-woven fabric, the fiber includes a sea-island structure, and the percentage of an island phase having a diameter of from 0.12 &#x3bc;m to less than 0.63 &#x3bc;m with respect to an island phase in a cross section orthogonal to the axis direction of the fiber on a number basis is 30% or more. (I) represents a random copolymer of propylene and at least one selected from ethylene or an &#x3b1;-olefin having a carbon number of from 4 to 20. (II) represents a propylene homopolymer with a melting point of less than 120&#xb0; C.

Spunbonded non-woven fabric, sanitary material, and method of manufacturing spunbonded non-woven fabric

A multilayer nonwoven fabric includes: an elastic nonwoven fabric containing a specific low crystalline polypropylene; and a mixed fiber spunbonded nonwoven fabric disposed on at least one surface of the elastic nonwoven fabric, wherein the mixed fiber spunbonded nonwoven fabric contains a long fiber of a thermoplastic elastomer (A) and a long fiber of a thermoplastic elastomer (B) other than the thermoplastic elastomer (A), in a ratio of 10 to 90% by mass:90 to 10% by mass ((A):(B), with the proviso that (A)+(B)=100% by mass).

Multilayer nonwoven fabric, stretchable multilayer nonwoven fabric, fiber product, absorbent article, and sanitary mask

A nonwoven fabric layered body, including: an elastic nonwoven fabric; and an extensible spunbond nonwoven fabric that is disposed on at least one surface side of the elastic nonwoven fabric and that has a degree of maximum load elongation of 50% or more in at least one direction, the nonwoven fabric layered body satisfying the following (1) and (2). (1) The elastic nonwoven fabric includes a resin composition containing a specific low-crystalline polypropylene, and an &#x3b1;-olefin copolymer A containing an ethylene-derived constitutional unit and a propylene-derived constitutional unit, and having a melting point of 100&#xb0; C. or more and a crystallization degree of 15% or less. (2) The resin composition contains from 5 parts by mass to 50 parts by mass of the &#x3b1;-olefin copolymer A with respect to 100 parts by mass of the resin composition.

Nonwoven fabric layered body, stretchable nonwoven fabric layered body, fiber product, absorbent article, and sanitary mask

A reflector having a structure in which a high refractive index layer, a low refractive index layer, and a metal layer mainly composed of silver or aluminum are sequentially arranged on a polymer base. The reflector can realize a higher reflectance than the conventional reflective bodies by using a polymer base wherein the atoms measured by XPS which constitute the surface of the polymer base are substantially identical with those constituting the inside of the polymer base. Furthermore, such a reflector can be used for a reflector, a reflector under a light-guiding plate, a backlight device and a liquid crystal display. The polymer base can be obtained by bringing a polymer base and a liquid into contact with each other.

Reflector, use thereof, and method for producing reflector

An object of the invention is to provide a reflector using a metal thin film layer, particularly a reflector having higher reflectance than in the prior art. Specifically, studies have been made to provide a reflector which exhibits a superior reflection-increasing effect. As a result, it has been found that if the thickness of a low refractive index thin film layer (B) which comes in contact with a metal thin film layer (A) is controlled so that it is within a range of 0.7 &#x3bb;/8n&#x2013;1.3 &#x3bb;/8n, a reflector having an arrangement of metal layer (A)/low refractive index thin film layer (B)/high refractive index thin film layer (C) exhibits reflectance which is extremely superior than in the prior art over a wide wavelength range. More specifically, it exhibits higher reflectance than a pure silver single film does, and a reflector superior in durability can be obtained. The lamp reflector, reflector under the light-guiding plate of the invention uses the above-mentioned reflector; therefore, if it is applied to each display device, high brilliance and vivid image can be realized. Further, since the liquid crystal display device of the invention uses the above-mentioned reflector, a clear vivid image can be realized.

Growing community of inventors

Chiba, Japan

Koichi Shimada