A nonwoven sheet can comprise a plurality of cellulosic pulp fibers and a plurality of synthetic polymeric fibers. The cellulosic pulp fibers can include a plurality of cedar pulp fibers that have a length weighted average fiber length of at least 1.0 millimeters (mm), optionally between 1.5 and 2.0 mm, and an average hydrodynamic specific surface area of at least 4.5 square meters per gram (m.sup.2/g), optionally at least 5 m.sup.2/g. The cellulosic pulp fibers can also include a plurality of softwood pulp fibers that, optionally, are NBSK pulp fibers and do not include cedar pulp fibers. The synthetic polymeric fibers can comprise polyester fibers.

A nonwoven sheet can comprise a plurality of cellulosic pulp fibers and a plurality of synthetic polymeric fibers. The cellulosic pulp fibers can include a plurality of cedar pulp fibers that have a length weighted average fiber length of at least 1.0 millimeters (mm), optionally between 1.5 and 2.0 mm, and an average hydrodynamic specific surface area of at least 4.5 square meters per gram (m.sup.2/g), optionally at least 5 m.sup.2/g. The cellulosic pulp fibers can also include a plurality of softwood pulp fibers that, optionally, are NBSK pulp fibers and do not include cedar pulp fibers. The synthetic polymeric fibers can comprise polyester fibers.

A fibrous structure including one or more nonwoven material layers comprising a fiber matrix, where the fiber matrix comprises polymeric binder fibers having a softening and/or melting temperature of about 190 C. or greater, where the article is adapted to withstand temperatures of about 190 C. or greater while in use; and where the article is a thermoacoustic insulation material.

A fibrous structure including one or more nonwoven material layers comprising a fiber matrix, where the fiber matrix comprises polymeric binder fibers having a softening and/or melting temperature of about 190 C. or greater, where the article is adapted to withstand temperatures of about 190 C. or greater while in use; and where the article is a thermoacoustic insulation material.

The application relates to a process for forming a nonwoven composite. The process includes forming a lofty nonwoven layer, obtaining a thermoplastic polymer, and applying the thermoplastic polymer to the second surface of the nonwoven layer, where the thermoplastic polymer is in the form of a molten polymer, semi-molten polymer, or solid film. Next, pressure and optionally heat is applied to the nonwoven layer and thermoplastic polymer, where the thermoplastic polymer and the second surface of the nonwoven layer are subjected to a textured surface forming a plurality of peak regions and a plurality of valley regions in the second surface of the nonwoven layer and embedding a portion of the primary fibers from the nonwoven layer into the thermoplastic polymer within the valley regions. The thermoplastic polymer is cooled forming a thermoplastic film and the nonwoven layer which together form the nonwoven composite.

The application relates to a process for forming a nonwoven composite. The process includes forming a lofty nonwoven layer, obtaining a thermoplastic polymer, and applying the thermoplastic polymer to the second surface of the nonwoven layer, where the thermoplastic polymer is in the form of a molten polymer, semi-molten polymer, or solid film. Next, pressure and optionally heat is applied to the nonwoven layer and thermoplastic polymer, where the thermoplastic polymer and the second surface of the nonwoven layer are subjected to a textured surface forming a plurality of peak regions and a plurality of valley regions in the second surface of the nonwoven layer and embedding a portion of the primary fibers from the nonwoven layer into the thermoplastic polymer within the valley regions. The thermoplastic polymer is cooled forming a thermoplastic film and the nonwoven layer which together form the nonwoven composite.

The invention provides a thermal insulation filling material, a preparation method thereof, and a thermal insulation article, and belongs to the technical field of thermal insulation filling material. The present invention can at least partially resolve the problems of poor durability in thermal insulation filling materials, such as wash durability, compression resilience, and the like in the prior art. The thermal insulation filling material of the present invention comprises: spherical fiber assemblies composed of elastic fibers preferably having an elastic elongation of from 80 to 300% and an elastic recovery of from 85 to 99%.

The invention provides a thermal insulation filling material, a preparation method thereof, and a thermal insulation article, and belongs to the technical field of thermal insulation filling material. The present invention can at least partially resolve the problems of poor durability in thermal insulation filling materials, such as wash durability, compression resilience, and the like in the prior art. The thermal insulation filling material of the present invention comprises: spherical fiber assemblies composed of elastic fibers preferably having an elastic elongation of from 80 to 300% and an elastic recovery of from 85 to 99%.

The present disclosure includes a composition and method of making a nonwoven that creates a self-adhesive during lamination that is suitable for use as an impermeable or almost impermeable packaging medium and is 100% biodegradable. Unlike other films that have difficulty in bonding to a substrate that may cause air bubbles and fisheyes, the present method of making a film, and related film composition needs no adhesive to bond to a substrate. In one aspect, PLA mono-component fibers are utilized at a specific blend to achieve impermeability and transparency and/or semi-transparency properties. The manufacture of the same is also disclosed.

The present disclosure includes a composition and method of making a nonwoven that creates a self-adhesive during lamination that is suitable for use as an impermeable or almost impermeable packaging medium and is 100% biodegradable. Unlike other films that have difficulty in bonding to a substrate that may cause air bubbles and fisheyes, the present method of making a film, and related film composition needs no adhesive to bond to a substrate. In one aspect, PLA mono-component fibers are utilized at a specific blend to achieve impermeability and transparency and/or semi-transparency properties. The manufacture of the same is also disclosed.