68results about "Foam addition" patented technology

The present invention relates to a solid cellulose foam object comprising a first solid cellulose foam portion attached to a second solid cellulose foam portion. optionally at least one additional solid cellulose foam portion may be attached to the first and / or the second solid cellulose foam portion. The invention also relates to a method for producing said solid cellulose foam object.

According to an example aspect of the present invention, there is provided a method comprising: in a mould, forming a multi-layered foamed fibrous structure from foamed fibrous compositions, wherein each of the foamed fibrous compositions comprises cellulosic fibres, water, air, and at least one foaming agent; dewatering the foamed fibrous structure; hot-pressing the dewatered structure, to obtain a moulded fibrous product, wherein said at least one foaming agent comprises at least one surface-active foaming agent and / or at least one polymeric foaming agent, and wherein at least one of the foamed fibrous compositions comprises a hydrophobic agent.

According to an example aspect of the present invention, there is provided a method comprising: in a mould, forming a multi-layered foamed fibrous structure from foamed fibrous compositions, wherein each of the foamed fibrous compositions comprises cellulosic fibres, water, air and a foaming agent; dewatering the foamed fibrous structure; hot-pressing the dewatered structure, to obtain a moulded multi-layered fibrous product, in which method at least two different foaming agents are applied, wherein said at least two different foaming agents are selected, independently from each other, from the group of surface-active foaming agents and polymeric foaming agents.

The present invention relates to surface-foamed paper and paperboard coated with a thermosensitive micro-foaming agent and, more specifically, to surface-foamed paper and paperboard that exhibit excellent shock absorption and buffering performance by coating the surface of paper with a foaming mixture comprising a micro-foaming agent and starch, and then foaming the micro-foaming agent through high-temperature drying. In addition, the present invention relates to eco-friendly surface-foamed paper and paperboard using a foam material that can volumetrically expand on the surface of paper and paperboard.

A method of manufacturing an article at least partially made of cellulose fibers comprises inserting a cellulose pulp comprising cellulose fibers and water into a mixing cavity; applying a high shear mixing action to the cellulose pulp using a high-shear mixer, such that a foam blend comprising cellulose fibers, water and air bubbles is created; inserting the foam blend into a mold cavity; and molding the article by heating the foam blend contained within the mold cavity.

A method for preparing a product comprising water repellent low-density material, the method comprising providing a product comprising dewatered foamed cellulose fiber foam, providing an aqueous dispersion of mycelium, applying the aqueous dispersion of mycelium on the surface of the dewatered foamed cellulose fiber foam to obtain a treated foamed cellulose fiber foam, incubating the treated foamed cellulose fiber foam for a time period enabling the mycelium to grow into the treated foamed cellulose fiber foam to obtain a composite product comprising mycelium filament network incorporated in the cellulose fiber foam, and drying the composite product at elevated temperature to obtain the product comprising water repellent low-density material. A product comprising water repellent cellulose fiber foam comprising mycelium filament network incorporated in the cellulose fiber foam, wherein the concentration and / or density of the mycelium filament network in the cellulose fiber foam is higher near the surface of the cellulose fiber foam compared to the interior of the cellulose fiber foam. Use of cellulose fiber foam for preparing a product comprising water repellent cellulose fiber foam.

The present invention provides a method for producing a PHA (polyhydroxyalkanoate) coated fibrous substrate, comprising the steps of: a) providing a fibrous substrate having a first major surface and a second major surface; b) applying a foamed first aqueous coating composition comprising a first PHA and a foaming agent onto the first major surface and drying the foamed first aqueous coating composition to form a first PHA layer; and 3 The present invention relates to a method for producing a fiber-based substrate, the method comprising the steps of: c) forming a first PHA layer, the first PHA layer being a foam having a foam density of 1 / 2; and b) applying a second aqueous coating composition comprising a second PHA onto the first PHA layer and drying the second aqueous coating composition to form a second PHA layer. The present invention further relates to a PHA-coated fiber-based substrate and a packaging container comprising the PHA-coated fiber-based substrate.

A method for producing a high-bulk, foam-formed substrate includes producing an aqueous-based foam including at least 1% by weight crimped synthetic fibers and at least 1% by weight binder fibers; forming a wet sheet from the aqueous-based foam; and drying the wet sheet to obtain the foam-formed substrate. A substrate includes an aqueous-based polymer foam including at least 1% by weight crimped synthetic fiber and at least 1% by weight binder fiber, wherein the substrate is free of superabsorbent material. A method for producing a high-bulk, foam-formed substrate includes producing an aqueous-based foam including at least 2% by weight crimped binder fibers; forming a wet sheet from the aqueous-based foam; and drying the wet sheet to obtain the foam-formed substrate, wherein the foam-formed substrate is free of superabsorbent material, and wherein the substrate has a dry density between 0.02 g / cc and 0.1 g / cc.

The present invention relates to a solid cellulose foam article comprising a first solid cellulose foam portion attached to a second solid cellulose foam portion, and optionally at least one additional solid cellulose foam portion attached to the first and / or second solid cellulose foam portions. The present invention also relates to a method of making the solid cellulose foam article.

The present invention relates to a decorative panel, in particular a floor, ceiling, or wall panel, and a method for manufacturing such a decorative panel. The panel according to the present invention comprises at least one foam layer having an upper side and a lower side, and at least one decorative solid layer attached directly or indirectly to the upper side of the foam layer, wherein both the foam layer and the decorative solid layer are wood-based materials. The present invention also relates to a floor covering made up of a plurality of such panels.

The present invention relates to a material suitable for manufacturing hydrophobic cellulose-based light-weight products, such as foams and foam papers, comprising any type of cellulose pulp from either soft wood or hardwood, 2 to 10 wt.% of hydrophobic suspension (OAF) to pulp, 0.5 to 5wt% of Chitosan solution in organic acids to pulp, 3 to 10 wt.% of surfactants to the pulp. The invention also relates to a process of making said material and a use thereof.

The present invention relates to a packaging unit (2) made of moulded pulp for products like eggs (P) and a method for manufacturing such packaging unit. The packaging unit according to the present invention comprises: - a carrier part (10) having a length, a width and a depth; and - one or more product compartments (48) that are provided in the carrier and are configured for receiving a product, wherein the moulded pulp comprises a foamed moulded fiber material, comprising a fiber material and a foaming agent, and having a solid content of the fiber material in the packaging unit abot 35% by weight.

The present invention relates to a material suitable for manufacturing hydrophobic cellulose-based light-weight products, such as foams and foam papers, comprisingany type of cellulose pulp from either soft wood or hardwood,2 to 10 wt. % of hydrophobic suspension (OAF) to pulp,0.5 to 5 wt % of Chitosan solution in organic acids to pulp, 3 to 10 wt. % of surfactants to the pulp. The invention also relates to a process of making said material and a use thereof.

The present invention is 10 to 80 kg / m 3 The present invention relates to a coated cellulose foam material having a density in the range of 0.1 to 1.0 mm, and a method for coating a cellulose foam. The coated cellulose foam material is formed by applying at least one coating layer of at least one coating composition to at least one outer surface of a cellulose foam.

A method and system for recovering organic compounds is disclosed. In one embodiment, the methods and systems may be used to recover surfactants in industrial processes. The aqueous stream is fed to a filtration device that produces a stream containing concentrated organic compounds.

A system comprising a pulper configured to (i) receive a surfactant, a liquid, and a fibrous stock and (ii) produce a foam suspending the fibrous stock, wherein the foam has a half-life; a headbox configured to contain the foam-suspended fibrous stock from the pulper and displace the foam-suspended fibrous stock onto a forming wire, wherein the time required for the foam-suspended fibrous stock to move from the pulper to the headbox is less than the half-life; and a foam return device that removes at least some of the foam from the forming wire and returns the at least some of the foam to the pulper.

The present invention relates to a method for producing a solid cellulose foam. The method includes depositing a first wet cellulose foam to obtain a first wet foam deposit, followed by providing score lines at least partially through the height of the first wet foam deposit to form pillars of wet cellulose foam. During drying of the first wet foam deposit, gaps are formed along the score lines, separating the pillars. In a subsequent deposition step, a second wet cellulose foam is deposited to obtain a subsequent wet foam deposit that fills the gaps between the pillars. After drying, a solid cellulose foam is obtained that includes the pillars of the first solid foam deposit and the subsequent solid cellulose foam deposit that fills the gaps between the pillars.

The package insert (10) includes a number of cellulose-based airlaid or solid foam substrates (20, 20A, 20B, 20C) having first and second major sides (22, 22A, 22B, 22C; 24, 24A, 24B, 24C), respectively. The package insert (10) also includes a first paper-based sheet (30) attached to the first major sides (22, 22A, 22B, 22C) and a second paper-based sheet (40) attached to the second major sides (24, 24A, 24B, 24C). The opposing edges (26, 26A, 26B, 28, 28B, 28C) of the continuous cellulose-based airlaid or solid foam substrates (20, 20A, 20B, 20C) are beveled edges (26, 26A, 26B, 28, 28B, 28C) and form an angle (α) of less than 90° between them. At least one hinge section (50, 50A, 50B) is interposed between the beveled edges (26, 26A, 26B, 28, 28B, 28C) of the continuous cellulose-based airlaid or solid foam substrates (20, 20A, 20B, 20C). The package insert (10) is foldable at the hinge section (50, 50A, 50B) and can be positioned within a package (80) to protect the packaged goods. The present invention also relates to a method for making the package insert (10).

A one-ply absorbent article comprising a nonwoven first layer; a non-woven third layer; a nonwoven second layer between the first layer and the third layer; and wherein the one-ply absorbent article has a first absorbency measure at a first delamination state and a second absorbency measure at a second delamination state, wherein the first absorbency measure is less than the second absorbency measure and the first delamination state is less than the second delamination state.

The present invention relates to a method for the preparation of a solid foam, wherein the method comprises depositing discrete units of a foam on a surface to obtain a first foam deposition, followed by depositing a wet foam between the discrete units to obtain a subsequent foam deposition, and drying the wet foam. The invention further relates to a solid foam comprising discrete units of foam embedded in a foam matrix.

The present disclosure relates to a method of treating an aqueous foamable medium, such as a process stream of a pulping and paper mill, comprising contacting the aqueous process stream with a defoaming agent comprising: a) at least one C12 to C40 Guerbet alcohol; and / or b) at least one polyol ester.

A packaging insert (10) comprises multiple cellulose-based air-laid or solid foam substrates (20, 20A, 20B, 20C) having respective first and second main sides (22, 22A, 22B, 22C, 24, 24A, 24B, 24C). The packaging insert (10) also comprises a first paper-based sheet (30) attached to the first main sides (22, 22A, 22B, 22C) and a second paper-based sheet (40) attached to the second main sides (24, 24A, 24B, 24C). Edges (26, 26A, 26B, 28, 28B, 28C) of consecutive cellulose-based air-laid or solid foam substrates (20, 20A, 20B, 20C) facing each other are beveled edges (26, 26A, 26B, 28, 28B, 28C) and form an angle (a) between each other that is less than 90°. At least one hinge section (50, 50A, 50B) is interposed between the beveled edges (26, 26A, 26B, 28, 28B 28C) of the consecutive cellulose-based air-laid or solid foam substrates (20, 20A, 20B, 20C). The packaging insert (10) is foldable in the hinge section(s) (50, 50A, 50B) and can be positioned within a packaging (80) to protect packaged goods. The invention also relates to a method of producing a packaging insert (10).

The present invention relates to a method for producing a solid cellulose foam wherein the method comprises: providing discrete units of a first cellulose foam on a surface to obtain a first foam deposit wherein the distance between adjacent discrete units is in the range of 2 mm to 20 mm; depositing a second wet cellulose foam between the discrete units to obtain a subsequent foam deposit; and drying the second wet cellulose foam in the subsequent foam deposit to obtain a solid cellulose foam, wherein the discrete units of the cellulose foam are embedded in the cellulose foam matrix. The invention also relates to a solid cellulose foam comprising discrete units of cellulose foam embedded in a cellulose foam matrix wherein the distance between adjacent discrete units is in the range of 2 mm to 20 mm.

Foam formulations and methods for manufacturing paper products using foam formulations are provided. An exemplary method includes producing a foam of a gas, water, a dry strength agent, and a combination of foaming agents including an anionic sulfated / sulfonated surfactant and a polysorbate-type nonionic surfactant; applying the foam to a web; and processing the web to form the product.

The invention relates to a method for producing a solid cellulose foam. The method includes depositing a first wet cellulose foam to obtain a first wet foam deposit subsequently provided with a cutting line extending at least partially through a height of the first wet foam deposit to form a column of wet cellulose foam. During drying of the first wet foam deposit, gaps are formed along the cutting lines such that the columns are separated by the gaps. In a subsequent deposition step, a second wet cellulose foam is deposited in order to obtain a subsequent wet foam deposit filling the gaps between the columns. After drying, a solid cellulose foam comprising the column of the first solid foam deposit and a subsequent solid cellulose foam deposit filling the gap between the columns is obtained.

The present invention relates to a method for producing a multilayer film comprising highly purified cellulose fibers, the method comprising the steps of: a) forming a first wet web by applying a first pulp suspension comprising highly purified cellulose fibers onto a first wire; b) partially dewatering the first wet web to obtain a first partially dewatered web; c) forming a second wet web by applying a foamed second pulp suspension comprising highly purified cellulose fibers and a foaming agent onto a second wire; d) partially dewatering the foamed second wet web to obtain a second partially dewatered web; e) bonding the first and second partially dewatered webs to obtain a multilayer web; and f) further dewatering and optionally drying the multilayer web to obtain a multilayer film comprising highly purified cellulose fibers.