14 results about "Fiber suspension" patented technology

An accept tank arrangement for mixing of pulped fiber suspension including sidewalls (3,4) including opposite arched ends (2) and an elongated section (1) between the arched ends (2). The accept tank has mixers (10) each located within one of the arched ends (2). The mixers (10) have axles (11) on which are mounted propellers (12). The mixers (10) are aligned horizontally and each axle points to a respective point on the elongated section (1) of the sidewall (3) which away from an end of the elongate section by at least 25% of the length of the elongated section (1). The propellers (12) are symmetrically positioned with respect to a center-point of the accept tank. Within the center of the elongated section is an elongated centerpiece (6) having rounded ends. The accept tank has a substantially flat bottom at least at the elongated section (1) of the accept tank.

A method for forming a fibrous sheet on a papermaking machine comprising the steps of depositing a dilute fiber suspension from outside a headbox onto a forming area comprising a forming surface made of a structured fabric, wherein the structured fabric is supported by a breast roll and a forming roll, and the forming area is devoid of any additional fabrics or belts other than the structured fabric, draining the dilute fiber suspension through the structured fabric, and drying the fiber suspension.

A mould (14) for forming an article from a fibre suspension. The mould includes an insert with a cavity (27) in the negative shape of an article to be formed and two regions of different porosity / permeability (28, 29) about the cavity (27). In use the mould communicates a suspending fluid of the fibre suspension, e.g. by vacuum pump, through the at least two regions of different porosity / permeability about the cavity. A formed shape (22) of fibres is left behind on the cavity.

The application discloses a kind of preparation and application of 3D porous nanocellulose aerogel electret material for radioactive aerosol purification, comprising: preparation of dialdehyde cellulose nanofiber and preparation of ethyl cellulose nanofiber;Dialdehyde cellulose nanofiber is dispersed with ethyl cellulose nanofiber in tertiary butanol aqueous solution to form fiber suspension, and it is transferred to template, freeze-drying, and 3D porous nanocellulose aerogel is obtained;3D porous nanocellulose aerogel is heat treated in aniline steam, and modified 3D porous nanocellulose aerogel is obtained, then it is corona polarized, and 3D porous nanocellulose aerogel electret material is obtained.The 3D porous nanocellulose aerogel electret material of the application has certain electricity storage performance, the surface potential of electret nanofiber aerogel is tested, and the surface potential value is still higher than 0.27kV after 420min, and its dust capacity is good, purification performance is high, with good application prospect.

The invention relates to a method and an installation for producing kraft paper, said installation comprising the following installation parts: - a wire section (2) for forming a fibrous web by continuously applying a fibrous suspension along the machine running direction (1) by means of a headbox (3); - a shaking device (4) for shaking the fibrous web transversely to the machine running direction (1), i.e. in the transverse direction; - a pressing section (5) for pressing the fibrous web partially dewatered in the wire section (2); - a drying section (6) for drying the fibrous web; - a compacting device (21), in particular a Clupak device, for compacting the fibrous web in the machine running direction (1), - and a winding station (7) for winding up the paper web formed from the fibrous web, wherein a bypass assembly (46) is provided for conveying the fibrous web along a bypass path (47) so as to bypass the compacting device (21).

The disclosure relates to a method for forming nanofiber-assembled filaments in which an aromatic polyamide nanofiber suspension is first formed into wet nanofiber-assembled filaments via wet-spinning and protonation in a coagulation medium including at least one proton donor along with a non-solvent for the aromatic polyamide. The wet nanofiber-assembled filaments are then drawn to reduce / remove voids in the nanofiber-assembled filaments and improve the mechanical properties of the assembled filaments. The method can be used as a recycling method for used aromatic polyamide fiber / filament materials in which the recycled filaments have high / good mechanical properties relative to virgin filament materials.

The invention relates to a method for producing paper or paperboard, comprising the addition of a mixture M and a water-soluble amphoteric polymer PA to a fiber suspension.

The application discloses a silicon carbide fiber composite felt and a preparation method thereof. Short-cut silicon carbide fibers are subjected to plasma surface treatment, then one of short-cut glass fibers, short-cut carbon fibers and the short-cut silicon carbide fibers are added into a nano-dispersion liquid to obtain a fiber suspension, and the fiber suspension is subjected to dewatering forming, drying and solidification to obtain the silicon carbide fiber composite felt. The application introduces hydrophilic groups such as carboxyl, hydroxyl and carbonyl on the surface of the short-cut fibers through low-temperature plasma, improves the wettability of the surface of the silicon carbide fibers, disperses different fibers through specific nano-dispersants, and finally obtains the silicon carbide fiber composite felt which can adjust and control the electromagnetic wave absorption rate of different electromagnetic wave bands and has excellent toughness and softness.

A system and process are disclosed for forming nonwoven webs from a foam and fiber suspension. After the web is formed, excess foam is collected and reused. The reclaimed foam is combined with further amounts of fiber at a high consistency. The high consistency fiber and foam mixture is defiberized without causing excessive foaming. The defiberized foam and fiber mixture is then diluted and fed back to a headbox for forming the nonwoven web.

FIELD: food industry.SUBSTANCE: method for producing a plant-based beverage is proposed, comprising: wet milling in an aqueous medium of plant-based raw material to obtain a raw material suspension; sifting the raw material suspension to obtain primary milk and a fibrous suspension; grinding the fibrous suspension; treating the fibrous suspension with a protease selected from the group consisting of a metalloendoprotease and a trypsin selected from the group consisting of bacterial trypsin and fungal trypsin; treating the fibrous suspension specified protease at a temperature below the specified operating temperature for the specified protease to obtain a processed fibre suspension; and sifting the processed fibre suspension to obtain secondary milk and clean fibre. A method is proposed for reducing the viscosity of the fibrous suspension.EFFECT: preservation of the quality of the extracted material, including beta-glucan and protein, by using low temperatures and minimal protease activity and digestion time during extraction.22 cl, 10 dwg, 28 tbl, 24 ex

The present invention relates to the fields of fibers and uses thereof such as for producing fiber webs, such as paper, board or tissue. Specifically, the invention relates to a method of monitoring and controlling cellulolytic activity in an aqueous cellulose fiber suspension or process water for a production method of a fibrous web containing cellulose fibers. Also, the present invention relates to a method of manufacturing a fibrous web, such as a paper, board, tissue or the like, and use of a biocide for controlling cellulolytic activity in an aqueous cellulose fiber suspension or in process water e.g. for a production method of a fibrous web containing cellulose fibers. Still, the present invention relates to a fibrous web, such as a paper, board, tissue or the like, an aqueous cellulose fiber suspension or process water for a production method of a fibrous web containing cellulose fibers, and a system for controlling cellulolytic activity in an aqueous fiber suspension or in process water.

Moulding system 100 for moulding a hollow moulded fibre product from a fibre suspension, the moulding system comprising: a permeable mould part 110 defining a space within which the hollow moulded fib