A carded staple fiber nonwoven having a basis weight of between about 45 grams per square meter (gsm) and about 150 gsm, includes a blend of absorbing fibers, stiffening fibers and filler fibers. The carded staple fiber nonwoven is non-heat stiffened, has an air permeability of between about 100 m.sup.3/m.sup.2/min and about 500 m.sup.3/m.sup.2/min, and a pore radius mode of between about 60 m and about 120 m.

Provided are: an antistatic resin composition for containers and pipes of organic solvents, which has long-lasting and sufficient antistaticity and whose antistatic performance is not impaired even when the composition is in contact with an organic solvent for a long period of time; and a container and a pipe for organic solvents, which include the same. The antistatic resin composition for containers and pipes of organic solvents contains 3 to 25 parts by mass of at least one polymer compound (E) with respect to 100 parts by mass of a thermoplastic resin, wherein the polymer compound (E) has a structure in which a diol, an aliphatic dicarboxylic acid, an aromatic dicarboxylic acid, a compound (B) which includes at least one group represented by the following Formula (1) and has hydroxyl groups at both ends, and an epoxy compound (D) having two or more epoxy groups are bound via ester bonds:
CH.sub.2CH.sub.2O(1).

Provided are: an antistatic resin composition for containers and pipes of organic solvents, which has long-lasting and sufficient antistaticity and whose antistatic performance is not impaired even when the composition is in contact with an organic solvent for a long period of time; and a container and a pipe for organic solvents, which include the same. The antistatic resin composition for containers and pipes of organic solvents contains 3 to 25 parts by mass of at least one polymer compound (E) with respect to 100 parts by mass of a thermoplastic resin, wherein the polymer compound (E) has a structure in which a diol, an aliphatic dicarboxylic acid, an aromatic dicarboxylic acid, a compound (B) which includes at least one group represented by the following Formula (1) and has hydroxyl groups at both ends, and an epoxy compound (D) having two or more epoxy groups are bound via ester bonds:
CH.sub.2CH.sub.2O(1).

Disclosed is an anti-weed sheet manufactured by forming webs. The web is formed of polyolefin-based staple fibers which are at least one selected from the group consisting of polyethylene staple fibers, polypropylene staple fibers, and polyisobutylene staple fibers. The sheet is bonded integrally by the needle punching by forming the webs, and the needle punching is performed in the order of pre-needle punching, low-speed needle punching, high-speed needle punching and low-speed needle punching to uniformly bridging the surface and the inside of the formed webs and improve a binding force. At least one surface of the sheet is modified by heat treatment through hot air or a heating drum.

Disclosed is an anti-weed sheet manufactured by forming webs. The web is formed of polyolefin-based staple fibers which are at least one selected from the group consisting of polyethylene staple fibers, polypropylene staple fibers, and polyisobutylene staple fibers. The sheet is bonded integrally by the needle punching by forming the webs, and the needle punching is performed in the order of pre-needle punching, low-speed needle punching, high-speed needle punching and low-speed needle punching to uniformly bridging the surface and the inside of the formed webs and improve a binding force. At least one surface of the sheet is modified by heat treatment through hot air or a heating drum.

The present invention relates to a method for manufacturing a melt-spun nonwoven fabric and a microfiber nonwoven web manufactured therefrom. The present invention relates to a method for manufacturing a melt-spun nonwoven fabric, in which fibers obtained by melt-spinning a thermoplastic polymer through a spinning nozzle including at least one nozzle hole are collected by high-speed air stream, wherein the melt-spun fibers are subjected to momentary local heating at a high temperature higher than a spinning temperature while same are caused to pass through a nozzle local heating provided directly under the spinning nozzle during spinning, so that the method can lower the melt flow index and spinline elongation viscosity of a thermoplastic resin discharged from the nozzle hole without reducing a molecular weight, thereby providing a microfiber nonwoven web formed by finely thin fibers, compared to the conventional spun-bond nonwoven fabric.

The present invention relates to a method for manufacturing a melt-spun nonwoven fabric and a microfiber nonwoven web manufactured therefrom. The present invention relates to a method for manufacturing a melt-spun nonwoven fabric, in which fibers obtained by melt-spinning a thermoplastic polymer through a spinning nozzle including at least one nozzle hole are collected by high-speed air stream, wherein the melt-spun fibers are subjected to momentary local heating at a high temperature higher than a spinning temperature while same are caused to pass through a nozzle local heating provided directly under the spinning nozzle during spinning, so that the method can lower the melt flow index and spinline elongation viscosity of a thermoplastic resin discharged from the nozzle hole without reducing a molecular weight, thereby providing a microfiber nonwoven web formed by finely thin fibers, compared to the conventional spun-bond nonwoven fabric.

The purpose of the present invention is to provide a heat-fusible composite fiber that reduces the consumption of fossil resources and imparts both bulkiness and flexibility to non-woven fabrics, and a non-woven fabric using the heat-fusible composite fiber. Provided is a heat-fusible composite fiber in which a first component is configured from a polyester resin and a second component is configured from a polyethylene resin having a lower melting point than the first component, the mixing ratio (weight ratio) of a biomass-derived polyethylene resin and a fossil-resource-derived polyethylene resin in the polyethylene resin being 20:80 to 90:10.

The provided articles, assemblies, and methods use a non-woven fibrous web (50) having one or more layers (60) that are densified in situ to provide a layer that is densified relative to one or more adjacent layers, collectively within a unitary non-woven construction. The non-woven web (50) can be made from fibers having a composition and/or structure that resist shrinkage induced by polymer crystallization when subjected to high temperatures. Advantageously, the provided non-woven webs (50) can be molded to form a three-dimensional shaped article that displays dimensional stability.

The provided articles, assemblies, and methods use a non-woven fibrous web (50) having one or more layers (60) that are densified in situ to provide a layer that is densified relative to one or more adjacent layers, collectively within a unitary non-woven construction. The non-woven web (50) can be made from fibers having a composition and/or structure that resist shrinkage induced by polymer crystallization when subjected to high temperatures. Advantageously, the provided non-woven webs (50) can be molded to form a three-dimensional shaped article that displays dimensional stability.