D21H17/34

Systems and methods to produce treated cellulose filaments and thermoplastic composite materials comprising treated cellulose filaments

A method and system to produce treated Cellulose Filaments (CF) and CF products are provided. Feedstock comprising CF in a water solution are mixed with a debonder to produce a mixed stream. The mixed stream is filtered yielding separate filtered and filtrate streams. The filtrate stream comprises at least a portion of the debonder. The filtered stream is dried to produce treated CF. The debonder is one of an alcohol, glycol ether, ester-containing quaternary ammonium salt, amido amine quaternary ammonium salt, disubstituted amide or a mixture thereof. The filtrate stream may be recycled. The mixed stream may be washed before filtering to remove debonder. A thermoplastic polymer-treated Cellulose filament composite material is formable by associating the treated CF with a thermopolymer such as polyolefin, polyurethane (PU), polypropylene (PP), polyester (PE), polylactic acid (PLA), polyhydroxyalkanoates (PHA), polyamide (PA), and ethylene vinyl acetate (EVA) or a mixture.

Systems and methods to produce treated cellulose filaments and thermoplastic composite materials comprising treated cellulose filaments

A method and system to produce treated Cellulose Filaments (CF) and CF products are provided. Feedstock comprising CF in a water solution are mixed with a debonder to produce a mixed stream. The mixed stream is filtered yielding separate filtered and filtrate streams. The filtrate stream comprises at least a portion of the debonder. The filtered stream is dried to produce treated CF. The debonder is one of an alcohol, glycol ether, ester-containing quaternary ammonium salt, amido amine quaternary ammonium salt, disubstituted amide or a mixture thereof. The filtrate stream may be recycled. The mixed stream may be washed before filtering to remove debonder. A thermoplastic polymer-treated Cellulose filament composite material is formable by associating the treated CF with a thermopolymer such as polyolefin, polyurethane (PU), polypropylene (PP), polyester (PE), polylactic acid (PLA), polyhydroxyalkanoates (PHA), polyamide (PA), and ethylene vinyl acetate (EVA) or a mixture.

METHOD FOR PRODUCING MULTI-LAYER PAPER

A method for producing dried multilayer paper is provided comprising (A) Dewatering a first aqueous fibrous suspension, thereby creating a first fibrous web, (B) Dewatering a second aqueous fibrous suspension, thereby creating a second fibrous web, (C) Spraying one or more of a first fibrous web and a second fibrous web with a spray solution or spray suspension, thereby producing at least one sprayed fibrous web, (D) Assembling the first fibrous web with the second fibrous web, (E) Dehydrating the resulting layer compound by pressing, then (F) Dehydrating by supplying heat, which creates the dried multilayer paper, wherein the spray solution or spray suspension contains (c-a) Water (c-b) at least one water-soluble polymer P obtained by polymerizing 40 to 85 mol % of a monomer of Formula I

##STR00001## in which R.sup.1=H or C.sub.1-C.sub.6-Alkyl, 15 to 60 mol % of one or more ethylenically unsaturated monomers.

METHOD FOR PRODUCING SINGLE-LAYER OR MULTI-LAYER PAPER

The invention relates to a method for producing dried single-layer or multi-layer paper containing the steps for a single-layer paper

(A) Dewatering a first aqueous fibrous suspension, thereby creating a first fibrous web having a dry content between 14% wt. and 25% wt.,
(D-1) Dehydrating the first fibrous web by pressing, thereby creating a partially dehydrated first fibrous web,
(E-1) Spraying the partially dehydrated first fibrous web on at least one surface side with a spray solution or spray suspension, which results in a sprayed partially dehydrated first fibrous web,
(F-1) Dehydrating the sprayed partially dehydrated first fibrous web by applying heat to form the dried single-layer paper,
or containing the above step (A) and steps for a multi-layer paper
(B) Dewatering a second aqueous fibrous suspension, thereby creating a second fibrous web having a dry content between 14% wt. and 25% wt.,
(C) assembling the first fibrous web to the second fibrous web such that the two fibrous webs touch each other on an entire surface side, thereby resulting in a layer compound,
(D-2) Dehydrating the layer compound by pressing, whereby a partially dehydrated layer compound is formed,
(E-2) Spraying the partially dehydrated layer compound on at least one surface side with a spray solution or spray suspension, whereby a sprayed layer compound is formed,
(F-2) Dehydrating the sprayed layer compound by applying heat means to form the dried multi-layer paper,
wherein the spray solution or spray suspension contains (e-a) Water and (e-b) at least one water-soluble polymer P, which can be obtained by polymerizing of (i) 40 to 85 mol % of a monomer of Formula I

##STR00001##

in the R.sup.1=H or C.sub.1-C.sub.6-Alkyl, (ii) 15 to 60 mol % of one or more ethylenically unsaturated monomers which are different from a monomer of the Formula I,
wherein the total amount of all monomers (i) and (ii) is 100 mol %, and optionally by subsequent partial or complete hydrolysis of the units of the monomers of the formula (I) polymerized into the polymer P to form primary amino or amidine groups, wherein the proportion of water is at least 75% wt., based on the spray solution or the spray suspension.

METHOD FOR PRODUCING SINGLE-LAYER OR MULTI-LAYER PAPER

The invention relates to a method for producing dried single-layer or multi-layer paper containing the steps for a single-layer paper

(A) Dewatering a first aqueous fibrous suspension, thereby creating a first fibrous web having a dry content between 14% wt. and 25% wt.,
(D-1) Dehydrating the first fibrous web by pressing, thereby creating a partially dehydrated first fibrous web,
(E-1) Spraying the partially dehydrated first fibrous web on at least one surface side with a spray solution or spray suspension, which results in a sprayed partially dehydrated first fibrous web,
(F-1) Dehydrating the sprayed partially dehydrated first fibrous web by applying heat to form the dried single-layer paper,
or containing the above step (A) and steps for a multi-layer paper
(B) Dewatering a second aqueous fibrous suspension, thereby creating a second fibrous web having a dry content between 14% wt. and 25% wt.,
(C) assembling the first fibrous web to the second fibrous web such that the two fibrous webs touch each other on an entire surface side, thereby resulting in a layer compound,
(D-2) Dehydrating the layer compound by pressing, whereby a partially dehydrated layer compound is formed,
(E-2) Spraying the partially dehydrated layer compound on at least one surface side with a spray solution or spray suspension, whereby a sprayed layer compound is formed,
(F-2) Dehydrating the sprayed layer compound by applying heat means to form the dried multi-layer paper,
wherein the spray solution or spray suspension contains (e-a) Water and (e-b) at least one water-soluble polymer P, which can be obtained by polymerizing of (i) 40 to 85 mol % of a monomer of Formula I

##STR00001##

in the R.sup.1=H or C.sub.1-C.sub.6-Alkyl, (ii) 15 to 60 mol % of one or more ethylenically unsaturated monomers which are different from a monomer of the Formula I,
wherein the total amount of all monomers (i) and (ii) is 100 mol %, and optionally by subsequent partial or complete hydrolysis of the units of the monomers of the formula (I) polymerized into the polymer P to form primary amino or amidine groups, wherein the proportion of water is at least 75% wt., based on the spray solution or the spray suspension.

Foam fiber elastomeric materials and their manufacturing

The present invention concerns an elastic fibrous material, based on a fiber network, also including an elastomeric component, which material has been formed into a flat structure with two surfaces. Further, the invention concerns a method of manufacturing said elastic fibrous material by forming a fiber network, containing an elastic polymer, foaming the fiber network, adding it into one or more layers on a support, followed by curing.

METHOD FOR PRODUCING PAPER

A method for producing a paper, which includes applying at least one of ionizing radiation and plasma to at least one of a paper base and a compound (A) selected from: a compound having a carbon-carbon unsaturated bond and containing no fluorine atom in a molecular structure, and a compound containing no fluorine atom in a molecular structure in which radicals are generated by irradiation of an electron beam to the compound, to introduce a layer formed from the compound (A) on a surface of the paper base.

IMPREGNATED CORE PAPER FOR DECORATIVE LAMINATE
20230407572 · 2023-12-21 ·

An impregnated core paper for a decorative laminate, in particular high-pressure decorative laminate, obtained by impregnating a paper substrate with an aqueous impregnating composition including one or more resins selected from melamine-ether resins, acrylic resins, epoxy resins, and mixtures thereof.

WET LAID DISPOSABLE ABSORBENT STRUCTURES WITH HIGH WET STRENGTH AND METHOD OF MAKING THE SAME
20230407573 · 2023-12-21 ·

A method of making an absorbent structure including mixing ultra-high molecular weight (UHMW) glyoxalated polyvinylamide adducts (GPVM) and/or high molecular weight (HMW), glyoxalated polyacrylamide and/or high cationic charge glyoxalated polyacrylamide (GPAM) copolymers and high molecular weight (HMW) anionic polyacrylamide (APAM) with the furnish during stock preparation of a wet laid papermaking process.

WET LAID DISPOSABLE ABSORBENT STRUCTURES WITH HIGH WET STRENGTH AND METHOD OF MAKING THE SAME
20230407573 · 2023-12-21 ·

A method of making an absorbent structure including mixing ultra-high molecular weight (UHMW) glyoxalated polyvinylamide adducts (GPVM) and/or high molecular weight (HMW), glyoxalated polyacrylamide and/or high cationic charge glyoxalated polyacrylamide (GPAM) copolymers and high molecular weight (HMW) anionic polyacrylamide (APAM) with the furnish during stock preparation of a wet laid papermaking process.