A dispersion machine for removing impurities from a fiber which includes a housing, a feed port and a discharge port arranged on the housing, and several processing components arranged in the housing wherein the processing component includes a connection portion and a scraping portion. When the processing component moves, the scraping portion is adapted to contact the fiber and moves relative to a surface of the fiber so as to remove impurities from the fiber surface. A feed screw rod and a discharge screw rod for processing material are also arranged in the housing to repeatedly feed material, discharge material and remove impurities form the fiber surface. The dispersion machine can be used to remove impurities from fiber in the papermaking field, textile field and the like, so as to obtain a raw material with a low impurity content.

A process for producing polyols from a low viscosity slurry comprising a thermally treated ligno-cellulosic biomass which has been subjected to a fiber shives reduction step is provided. Specifically, a continuous process for catalyzing the formation of polyol products, such as ethylene glycol and propylene glycol, from the low viscosity slurry is provided.

A method for manufacturing bleached pulp from a feedstock that includes recycled paper. The method includes steps of: (1) impregnating the feedstock with cooking liquor to yield an impregnated material having a liquor-to-fiber mass ratio of at most about 4:1; (2) cooking the impregnated material to remove at least a portion of the lignin within the impregnated material, thereby yielding a cooked pulp; and (3) bleaching the cooked pulp.

The present invention provides improved hemp decortication systems and methods, and include multi stage segmenting, cleaning, and combing methods and apparatus for separating fibrous plant stalk, and particularly for separating hemp bast fiber from hemp hurd.

The disclosure belongs to the technical field of papermaking technology and waste comprehensive utilization, and specifically relates to a method for preparing biomechanical unbleached pulp from wheat straw and full utilization of by-products thereof. In the present disclosure, wheat straw is used as raw materials for pulping, and treated by hot water, then a trace of KOH is added, the temperature of the wheat straw after heat saturation and softening is adjusted, alkaline compound enzymes is added for biological treatment, and refining of wheat straw is performed at last. The mechanical pulp meets the production requirements for unbleached packaging paper and paper-based materials, meanwhile, the by-products are recycled to prepare a biomass compound fertilizer, turning solid waste into treasures, and realizing a high value full utilization of wheat straw. Thus a good practical application value and a broad application prospect are performed.

A differential density absorbent towel paper product comprising at least one absorbent towel paper web is disclosed. The absorbent towel paper web has: (a) from about 20% to about 90% by weight of the dry fiber basis of the absorbent towel paper web of a refined soft wood pulp fiber mixture, (b) pulp fibers selected from the group consisting of hard wood fibers, non-wood fibers, recycled fibers, synthetic polymer fibers, bleached eucalyptus kraft fibers, and combinations thereof and, (c) not more than about 10% by weight moisture. The refined soft wood pulp fiber mixture has: i) from about 18.5% to about 88.5% by weight of soft wood pulp fiber; ii) from about 0.25% to about 5.0% by of cationic strengthening polymer; and, iii) from about 0.05% to about 20% by weight of cellulose nano-filaments.

The present invention relates to a hyaluronate nonwoven fabric composed of hyaluronate fibers and a manufacturing method therefor, wherein a nonwoven fabric composed of only pure hyaluronate is provided without the addition of any heterogeneous fiber, such as PVA which is a binding fiber essentially added during a wet-laid nonwoven fabric manufacturing process, so that a nonwoven fabric composed of only hyaluronate fibers with excellent human compatibility and without cytotoxicity, skin irritation, and the like can be provided, and thus can be used as patches for cosmetic patches, wet wound dressings, tissue adhesion barrier membranes, and the like.

The present invention provides improved hemp decortication systems and methods, and include multi stage segmenting, cleaning, and combing methods and apparatus for separating fibrous plant stalk, and particularly for separating hemp bast fiber from hemp hurd.