Nitto-Denko Corporation

Muneshige Nakagawa

Shinsuke Ikishima

Kohei Takeda

Shou Uchida

Yoshitake Shigematsu

Yasuhiro Takeda

Itsuhiro Hatanaka

Fumika Kawatake

Nobukazu Negishi

Ryuji Kuwabara

Ikuya Kuzuhara

Hiroaki Takahashi

Sho Uchida

A PSA composition comprising a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound, a tackifier resin, and a softening agent is provided. The tackifier resin comprises a natural product-based tackifier resin (A) having a softening point higher than 80° C. and containing no aromatic ring, and a petroleum-based tackifier resin (B) having a softening point higher than 100° C. and containing an aromatic ring. The content of the tackifier resin (A) is 40 to 120 parts by weight, the content of the tackifier resin (B) is 5 to 40 parts by weight, the total amount of the tackifier resin is 60 to 160 parts by weight, and the content of the softening agent is 5 to 40 parts by weight with respect to 100 parts by weight of the block copolymer, with respect to 100 parts by weight of the block copolymer.

Pressure-sensitive adhesive composition and pressure-sensitive adhesive sheet

Provided is a multilayer co-extruded film comprising at least two different elasticity layers with at least one first elasticity layer and at least one second elasticity layer having higher elasticity than the at least one first elasticity layer, wherein the first elasticity layer comprises a combination of an olefin-based elastomer and a crystalline olefin polymer, and wherein the residual strain after 100% elongation during 10 min at 23&#xb0; C. of the multilayer co-extruded film is less than 15%.

Multilayer co-extruded films and article containing same

Provided is a stretchable film having excellent stretchability, excellent air permeability, and an excellent deodorizing property. Also provided is an article including such stretchable film. A stretchable film of the present invention is a film having stretchability, and includes a deodorant. The stretchable film of the present invention is a film having stretchability, and has a deodorization efficiency for each of ammonia and hydrogen sulfide 3 hours after the start of a deodorization test, the deodorization efficiency being measured by a detector tube method, of 10% or more.

Stretchable film and article comprising same

Provided is a stretchable film having excellent stretchability and excellent air permeability. Also provided is an article including such stretchable film. The stretchable film of the present invention includes an olefin-based resin and a filler.

Stretchable film and product including same

Provided is an ultrasmall-sized fixing tape suitable for a disposal tape for an absorbent article, such as a disposable diaper, a sanitary napkin, or an incontinence pad. The ultrasmall fixing tape of the present invention includes: an extending portion; and a non-extending portion that is substantially free from extending, in which: the non-extending portion includes securing means in at least part thereof; the ultrasmall fixing tape has a base material layer B; the base material layer B has a thickness of 50 &#x3bc;m or more; and the base material layer B has an upper yield strength in a longitudinal direction thereof at a temperature of 23&#xb0; C. and a humidity of 50% of from 5 N/25 mm to 15 N/25 mm.

Ultrasmall securing tape and article including same

Provided is a stretchable film that can prevent a delivery failure when delivered from a winding body. Also provided is a stretchable laminate including such stretchable film. Still also provided is an article including such stretchable laminate. The stretchable film of the present invention includes a laminated film of a plurality of elastomer layers, wherein the stretchable film includes an elastomer layer (A), an elastomer layer (B), and an elastomer layer (A) in the stated order, wherein the elastomer layer (A) and the elastomer layer (A) are provided as outer layers, and wherein each of the elastomer layer (A) and the elastomer layer (A) contains a fatty acid amide.

Stretchable film, stretchable laminate and article comprising same

Provided is a method of producing a layered article by which a sufficient production speed can be achieved, and preferably, a variation in fusion strength can be suppressed and hence a variation in product quality can be reduced. The method of producing a layered article of the present invention includes fusing at least part of a single-layer body or a laminate including at least one layer including a non-woven fabric of fiber having a fiber diameter of 100 &#x3bc;m or less through ultrasonic welding.

Method for producing layered article

The stretchable porous film of the present invention includes voids in a surface thereof, in which: the stretchable porous film has an air permeability measured with an Oken-type air permeability meter of less than 99,999 sec/100 cc; the stretchable porous film has such an extending direction that an air permeability measured with the Oken-type air permeability meter in a state in which the stretchable porous film is extended by 100% becomes less than 60,000 sec/100 cc; and the stretchable porous film has such a pulling direction that when, in a hysteresis test, the stretchable porous film is pulled from a width of 20 mm and an inter-chuck distance of 30 mm to an inter-chuck distance of 60 mm at a pulling speed of 50 mm/min and held for 1 minute, and then the pulling of the inter-chuck distance is released, a residual strain becomes 10 mm or less.

Growing community of inventors

Ibaraki, Japan

Muneshige Nakagawa