140results about "Foam addition" patented technology

A composite can include cellulose fiber; and foam binding the cellulose fiber. A method for manufacturing a composite can comprise mixing a plurality of ingredients to form a pre-foam mixture; foaming the pre-foam mixture to produce a foam; mixing the foam with cellulose fiber to form a composite material; and curing the composite material.

A composite can include cellulose fiber and foam binding the cellulose fiber. A method for manufacturing a composite can comprise mixing a plurality of ingredients to form a pre-foam mixture, foaming the pre-foam mixture to produce a foam, mixing the foam with cellulose fiber to form a composite material, and curing the composite material.

A process for foam forming webs is described herein. A foamed suspension of fibers is fed into a mixing chamber and then directed through a narrow constriction where the velocity of the foamed suspension of fibers is increased. From the narrow constriction, the foamed suspension of fibers enters a forming chamber which causes the foamed suspension of fibers to rapidly decrease in velocity. In one embodiment, for example, the foamed suspension of fibers undergoes a hydraulic jump resulting in significant fiber reorientation. Through the process, fiber orientation can be controlled. For example, webs can be produced that have comparable fiber orientation in the machine direction in comparison to the cross-machine direction.

The invention relates to a method for applying starch to a paper or paperboard web, the method comprising the steps of: providing an aqueous suspension comprising starch particles and at least 1 wt %, based on the dry solid content of the suspension, of an amphiphilic polymer, creating a foam of the aqueous suspension, and applying the foam to the paper or paperboard web. The invention further relates to a paper or paper board product obtained by the method.

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.

This disclosure provides a foam comprising at least one structuring component selected from lignin, cellulose fibres (CF), cellulose microfibrils (CMF), and cellulose nanofibrils (CNF), polyelectrolyte, multivalent ions, and closed pores comprising gas, wherein at least some of the polyelectrolytes are present in non-covalent complexes with the multivalent ions, providing a network structure in the foam. There is also provided several manufacturing methods for manufacturing such foams.

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.

The present invention relates to a coated cellulose foam material having a density in the range of from 10 to 80 kg / m3, and a method for coating a cellulose foam. Said coated cellulose foam material is formed by applying at least one coating layer of at least one coating composition on at least one outer surface of a cellulose foam.

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.

The present invention relates to a method of forming at least one compressed region in a solid cellulose foam, said method comprising the step of: a) Providing a solid cellulose foam; b) Providing at least one cutting line of a predetermined depth of cut into at least one surface of said solid cellulose foam, whereby the at l ast one cutting line defining at least one pattern on said at least one surface; and c) Pressing at least one pressing tool into said at leas one pattern of said at least one surface of said cellulose foam thereby forming at le st one compressed region. The invention further relates to a solid cellulose foam product formed by the method.

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

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.

A method for manufacturing an article (62) at least partially made of cellulose fibers, the method comprising the following steps: • a. inserting a cellulose pulp (20) comprising cellulose fibers and water into a mixing cavity; • b. applying a high shear mixing action to the cellulose pulp (20) using a high-shear mixer (28), such that a foam blend comprising cellulose fibers, water and air bubbles is created; • c. inserting the foam blend into a mold cavity (334); • d. molding the article (62)by heating the foam blend contained within the mold cavity.

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 present invention relates to a method for manufacturing a multilayer film comprising highly refined cellulose fibers, the method comprising the steps of: a) forming a first wet web by applying a first pulp suspension comprising highly refined cellulose fibers on 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 refined cellulose fibers and a foaming agent on a second wire; d) partially dewatering the foamed second wet web to obtain a second partially dewatered web; e) joining the first and second partially dewatered web to obtain a multilayer web; and f) further dewatering, and optionally drying, the multilayer web to obtain a multilayer film comprising highly refined cellulose fibers.