The present invention aims to provide a porous polyvinyl acetal object and a nonwoven polyvinyl acetal fabric each capable of exhibiting significantly high shock absorption. Provided is a porous polyvinyl acetal object having a large number of cells, including: a polyvinyl acetal; and a plasticizer, the porous object having an open cell ratio of 10% or higher, the porous object in the form of a sample with a size of 10 cm in length, 10 cm in width, and 4 mm in thickness having a coefficient of rebound (rebounding height/drop height) of 0.1 or lower in measurement of a rebounding height of a -inch SUS ball in conformity with JIS B 1501 dropped from a given drop height to the center of the sample placed on an iron plate with a size of 10 cm or more in length, 10 cm or more in width, and 1 cm in thickness.

Articles, such as sanitary tissue products, including fibrous structures, and more particularly articles including fibrous structures having a plurality of fibrous elements wherein the article exhibits differential cellulose content throughout the thickness of the article and methods for making same are provided.

Methods of treating fibers comprising a polymer including at least one of a vinyl acetate moiety or a vinyl alcohol moiety, and resulting fibers or the products comprising the resulting fibers are disclosed. In an example embodiment, a fiber having a surface region and an interior region, includes a polymer comprising at least one of a vinyl acetate moiety or a vinyl alcohol moiety chemically modified with a modification agent. The fiber has a transverse cross-section including the interior region comprising the polymer having a first degree of modification and the surface region comprising the polymer having a second degree of modification greater than the first degree of modification.

Methods of treating fibers comprising a polymer including at least one of a vinyl acetate moiety or a vinyl alcohol moiety, and resulting fibers or the products comprising the resulting fibers are disclosed. In an example embodiment, a fiber having a surface region and an interior region, includes a polymer comprising at least one of a vinyl acetate moiety or a vinyl alcohol moiety chemically modified with a modification agent. The fiber has a transverse cross-section including the interior region comprising the polymer having a first degree of modification and the surface region comprising the polymer having a second degree of modification greater than the first degree of modification.

Hydroxyl polymer polymeric structures, for example fibrous elements, such as filaments and/or fibers, and more particularly to hydroxyl polymer fibrous elements that contain a dual purpose material and/or dual purpose material component, fibrous structures made therefrom, and methods for making same are provided.

Hydroxyl polymer polymeric structures, for example fibrous elements, such as filaments and/or fibers, and more particularly to hydroxyl polymer fibrous elements that contain a dual purpose material and/or dual purpose material component, fibrous structures made therefrom, and methods for making same are provided.

Described is a fiber material comprising a substrate of non-ionic, non-woven fibers, and at least one additional component, which is an agent that comprises at least one group capable of forming a hydrogen bond, wherein a combination of the substrate and the agent causes the fiber material to have an increased wet tensile strength of at least 5%, as measured in accordance with EN 29073-3:1992, as compared to an otherwise identical fiber material without the agent. The fiber material can be of use in various fields, in particular household products, hygiene products, and the like. These fiber materials are of particular use in wound treatment.

Described is a fiber material comprising a substrate of non-ionic, non-woven fibers, and at least one additional component, which is an agent that comprises at least one group capable of forming a hydrogen bond, wherein a combination of the substrate and the agent causes the fiber material to have an increased wet tensile strength of at least 5%, as measured in accordance with EN 29073-3:1992, as compared to an otherwise identical fiber material without the agent. The fiber material can be of use in various fields, in particular household products, hygiene products, and the like. These fiber materials are of particular use in wound treatment.

The present invention provides bi-component polymeric macrofibers having an ethylene-vinyl alcohol (EVOH) outer component and a core or second component comprising a polymer blend of polypropylene grafted with maleic anhydride and polypropylene or polyethylene. The bi-component polymeric macrofibers provide excellent fiber reinforcement in concrete applications.

The present invention provides bi-component polymeric macrofibers having an ethylene-vinyl alcohol (EVOH) outer component and a core or second component comprising a polymer blend of polypropylene grafted with maleic anhydride and polypropylene or polyethylene. The bi-component polymeric macrofibers provide excellent fiber reinforcement in concrete applications.