D21H17/36

A METHOD FOR MANUFACTURING A FOAM COATED CELLULOSE BASED SUBSTRATE
20230220629 · 2023-07-13 · ·

The present invention relates to a method for manufacturing a polymer coated cellulose based substrate useful as a barrier film, said method comprising the steps of: a) providing a cellulose based substrate comprising 50-99 wt % highly refined cellulose fibers based on the total dry weight of the cellulose based substrate; b) preparing an aqueous foam from an aqueous solution of a foam forming polymer; c) applying the aqueous foam to at least one surface of the cellulose based substrate; and d) collapsing the aqueous foam to form a polymer coating on the cellulose based substrate.

A METHOD FOR MANUFACTURING A FOAM COATED CELLULOSE BASED SUBSTRATE
20230220629 · 2023-07-13 · ·

The present invention relates to a method for manufacturing a polymer coated cellulose based substrate useful as a barrier film, said method comprising the steps of: a) providing a cellulose based substrate comprising 50-99 wt % highly refined cellulose fibers based on the total dry weight of the cellulose based substrate; b) preparing an aqueous foam from an aqueous solution of a foam forming polymer; c) applying the aqueous foam to at least one surface of the cellulose based substrate; and d) collapsing the aqueous foam to form a polymer coating on the cellulose based substrate.

ARTICLES OF MANUFACTURE COMPRISING NANOCELLULOSE ELEMENTS

The present invention provides formulations comprising a suspension of nanocellulose (NC) elements and a drying/dispersal additive selected from the group consisting of temperature-responsive polymers, small molecule additives in volatile systems, and blocking agents and methods of preparing such formulations, and further provides NC-containing materials, composite materials and useful articles of manufacture made therefrom.

Saccharide fatty acid ester inorganic particle combinations

The present disclosure describes methods of treating cellulosic materials with compositions that allow greater retention of inorganic particles on cellulosic substrates. The methods as disclosed provide combining saccharide fatty acid esters (SFAE) with such inorganic particles and applying such combinations on cellulosic materials to eliminate or reduce the use of retention aids or binders for filler in the paper making process. Compositions comprising such combinations of SFAE and inorganic particles are also disclosed.

FLUSHABLE WIPE AND METHOD OF FORMING THE SAME

A single or multi-ply flushable and dispersible wet wipe including a wet laid fibrous web imprinted using a structuring fabric, a binder composition comprising poly(vinyl) alcohol, poly(vinyl) acetate, poly (ethylene) (vinyl) alcohols, poly (ethylene) (vinyl) acetate, copolymers of vinyl acetate-ethylene, or combinations thereof, and one or more additives. In an exemplary embodiment, the fibrous web is wetted by a wetting solution comprising 0.1% to about 10% by weight of one of the following: (1) boric acid; and (2) boric acid and a mono or divalent salt.

FLUSHABLE WIPE AND METHOD OF FORMING THE SAME

A single or multi-ply flushable and dispersible wet wipe including a wet laid fibrous web imprinted using a structuring fabric, a binder composition comprising poly(vinyl) alcohol, poly(vinyl) acetate, poly (ethylene) (vinyl) alcohols, poly (ethylene) (vinyl) acetate, copolymers of vinyl acetate-ethylene, or combinations thereof, and one or more additives. In an exemplary embodiment, the fibrous web is wetted by a wetting solution comprising 0.1% to about 10% by weight of one of the following: (1) boric acid; and (2) boric acid and a mono or divalent salt.

Water-dispersible composite structure and method of producing the same

A water-dispersible composite structure, which comprises one or more layers, and a method of producing the same. At least a part of the layers is formed by a fibrous web or sheet containing 50-90 parts by weight of wood fibers and 10-90 parts by weight of annual or perennial plant fibers and/or 10-50 parts by weight of synthetic short-cut fibers, and 0.1-20% by weight of a binder, calculated from the weight of the fibers, and at least a part of the binder being a water-soluble polymer and another part a water dispersible binder, and the fibrous sheet or web being produced by wet forming. By means of the invention, the fibers of the composite structure can be recovered and recycled by equipment conventionally used in the paper and paperboard industry.

Water-dispersible composite structure and method of producing the same

A water-dispersible composite structure, which comprises one or more layers, and a method of producing the same. At least a part of the layers is formed by a fibrous web or sheet containing 50-90 parts by weight of wood fibers and 10-90 parts by weight of annual or perennial plant fibers and/or 10-50 parts by weight of synthetic short-cut fibers, and 0.1-20% by weight of a binder, calculated from the weight of the fibers, and at least a part of the binder being a water-soluble polymer and another part a water dispersible binder, and the fibrous sheet or web being produced by wet forming. By means of the invention, the fibers of the composite structure can be recovered and recycled by equipment conventionally used in the paper and paperboard industry.

Flushable wipe and method of forming the same

A single or multi-ply flushable and dispersible wet wipe including a wet laid fibrous web imprinted using a structuring fabric, a binder composition comprising poly(vinyl) alcohol, poly(vinyl) acetate, poly (ethylene) (vinyl) alcohols, poly (ethylene) (vinyl) acetate, copolymers of vinyl acetate-ethylene, or combinations thereof, and one or more additives. In an exemplary embodiment, the fibrous web is wetted by a wetting solution comprising 0.1% to about 10% by weight of one of the following: (1) boric acid; and (2) boric acid and a mono or divalent salt.

Flushable wipe and method of forming the same

A single or multi-ply flushable and dispersible wet wipe including a wet laid fibrous web imprinted using a structuring fabric, a binder composition comprising poly(vinyl) alcohol, poly(vinyl) acetate, poly (ethylene) (vinyl) alcohols, poly (ethylene) (vinyl) acetate, copolymers of vinyl acetate-ethylene, or combinations thereof, and one or more additives. In an exemplary embodiment, the fibrous web is wetted by a wetting solution comprising 0.1% to about 10% by weight of one of the following: (1) boric acid; and (2) boric acid and a mono or divalent salt.