131 results about "Pulp fibre" patented technology

The invention discloses a method for preparing high-quality dissolving pulp from low-grade plant fiber raw materials, and belongs to the technical field of biomass pulping. The preparation method comprises the following steps: screening a low-grade plant fiber raw material to obtain a fiber raw material of which the length is 20-30 mm, the width is 10-15 mm and the thickness is 3-5 mm; carrying out deep prehydrolysis-sulfate cooking treatment on the screened fiber raw materials to obtain unbleached sulfate pulp fibers; performing deep eutectic solvent and elemental chlorine-free bleaching treatment on the unbleached sulfate pulp fiber to obtain paper pulp fiber with low kappa number; and carrying out biological enzyme treatment on the paper pulp fibers with low kappa number to obtain the high-quality dissolving pulp. According to the method, the morphology and the structure of chemical pulp fibers are effectively regulated and controlled by designing deep eutectic solvent treatment, and deep dissolution of residual hemicelluloses and lignin is achieved; through biological enzyme treatment, the alpha-cellulose content and the Fock reaction performance are further improved, and finally the high-quality dissolving pulp is prepared.

The invention discloses a cellulose paper-based diaphragm for a zinc-iodine battery as well as a preparation method and application of the cellulose paper-based diaphragm. The diaphragm is of a three-layer composite structure and comprises a matrix layer formed by paper pulp fibers such as softwood pulp, hardwood pulp, bamboo pulp or straw pulp through a wet papermaking technology, and compact functional layers which cover the two sides of the matrix layer and are formed by oxidized nanocellulose (TOCN). The preparation method mainly comprises the following steps: preparing the paper-based diaphragm matrix through wet papermaking, coating the two sides of the paper-based diaphragm matrix with TOCN aqueous dispersion, and finally carrying out hot-pressing drying treatment to enable the three layers to be tightly combined. According to the invention, the nano aperture and the surface negative electricity functional group of the TOCN layer are utilized, so that physical blocking and electrostatic repulsion of polyiodide ions can be realized at the same time, and the shuttle effect is effectively inhibited; and the uniform pore channels can guide zinc ions to uniformly deposit and inhibit dendritic crystal growth. The diaphragm is green in raw material, simple in process and low in cost, and the cycle life and coulombic efficiency of the battery can be remarkably improved when the diaphragm is applied to the zinc-iodine battery.

The invention belongs to the technical field of mineral flotation, and particularly relates to a cellulose-based coal slime collecting agent and a preparation method and application thereof. The method comprises the following steps: performing wet grinding on recycled waste paper to obtain a paper pulp solution, stirring until paper pulp fibers are uniformly dispersed, adding excessive lithium chloride and sodium periodate, performing stirring reaction, cleaning and centrifuging to obtain precursor cellulose, performing amino alkylation modification to obtain amino alkyl cellulose, preparing the amino alkyl cellulose into a 20 g / L solution, and performing vacuum drying to obtain the lithium ion battery cathode material. And then uniformly mixing with non-polar hydrocarbon oil according to the volume ratio of 1: 2 to obtain the coal slime collecting agent. The prepared coal slime collecting agent contains the hydrophobic nanocellulose with the large length-diameter ratio, in the flotation process, adhesion of bubbles and minerals can be promoted, diffusion of the bubbles is promoted, and the flotation efficiency and the recovery rate are improved.

A kraft paper having a pulp according to ISO 536 of between 60 g / m2 and 120 g / m2, a density of between 680 kg / m3 and 720 kg / m3, and a tensile strength index in the machine direction according to ISO 1924-3 of between 79 kNm / kg and 98 kNm / kg, the kraft paper optionally having a coating and / or an auxiliary element on at least one side. The kraft paper is made of a pulp having an average pulp fibre length of 2.2 mm to 2.7 mm with a minimum pulp content of at least 96% wt. %; a pore volume of the uncoated kraft paper is between 200 μl / g and 220 ml / g; in the thickness direction of the paper, there are regions of different porosities; and at least one region has pores with a pore diameter of less than or equal to 0.3 μm. The invention also relates to a paper sack.

A filter material for manufacturing a segment of a smoking article is described. The filter material includes a hydro-entangled nonwoven, which includes fibers. The fibers are selected from the group consisting of pulp fibers, fibers of regenerated cellulose and mixtures thereof. These fibers are contained in the nonwoven in an amount of 50% to 100% of the mass of the hydro-entangled nonwoven. The nonwoven is in the form of a web, has a longitudinal direction in the running direction of the web, a cross direction orthogonal thereto and lying in the plane of the web and a thickness direction orthogonal to longitudinal direction and the cross direction. The nonwoven is shaped to have a wave structure in the plane formed by the cross direction and the thickness direction with a wave height from 50 μm to 1000 μm and a wave length from 150 μm to 5000 μm.

A material for a smoking article includes non-pulp fibers and a hydrophobic substance. The non-pulp fibers are preferably plant-derived.

The invention provides a paper-based buffer material based on dry forming and radio frequency heating consolidation and a preparation method of the paper-based buffer material, and belongs to the technical field of buffer packaging materials. Paper pulp fibers, bi-component hot melting fibers and functional fibers are subjected to fiber burdening and mixing, dry forming, radio frequency heating consolidation and cooling setting, and finally the high-performance paper-based buffer material is obtained. The preparation method has the advantages of greenness, high efficiency, no water addition and low energy consumption.

The invention discloses high-smoothness paper for daily use and a preparation method thereof. The method comprises the following steps: applying a cationic softening agent (the addition amount is 0.8%-1.2%) to paper pulp fibers, and carrying out physical swelling treatment (0.15-0.20 MPa, 20-30 minutes); then grinding under the power of 280-310 kW, and controlling the concentration to be 3.5%-4.0%; and finally, forming on a 120-140-mesh forming net under the calendering pressure of 0.25-0.30 MPa, drying at the temperature of 110-120 DEG C for 15-20 seconds, and wrinkling. An on-line detection and feedback system can be integrated, and key parameters can be dynamically adjusted. The softness of the prepared household paper is 6.0-8.0 mN, the smoothness is 45-55 s, the wrinkle depth deviation is less than or equal to 0.02 mm, and the raw materials are hardwood pulp and softwood pulp in a ratio of 8.5: 1.5. According to the scheme, unification of softness, smoothness and high strength is achieved, the problems of performance contradiction and unstable production in a traditional process are solved, and the method is suitable for continuous intelligent manufacturing of high-end household paper.

The invention relates to the technical field of cigarette packaging materials, in particular to environment-friendly lining paper and a preparation method thereof. The problem that the environment-friendly lining paper is insufficient in tensile strength and barrier property is solved. Paper pulp fibers are compounded with nano fibrillated cellulose and homogenized under high pressure, cationized lignosulfonate and nano montmorillonite slurry are compounded in homogenized slurry, glyoxal is used for in-situ crosslinking, and an internal'brick-mud 'bionic barrier structure is constructed; after the paper sheet is formed, the surface of the paper sheet is coated with an acetylation modified hemicellulose blocking agent, thermocuring is carried out, a gradient structure is constructed cooperatively, the tensile strength, the water vapor blocking property and the aroma blocking property of the lining paper are improved, and the used raw materials are derived from biomass and natural minerals and are green and environment-friendly.

A capsule for use in preparing a beverage in a beverage preparation device that has a brewing chamber. The capsule has a body having a cup shape that defines an internal cavity within which to contain a beverage ingredient, and a flange that extends radially outwardly from a mouth of the body. The flange includes a chamber engagement portion that, during preparation of a beverage, is to be in engagement with components of the beverage preparation device that define the brewing chamber. The body and the flange are formed of compressed pulp fibre material. The chamber engagement portion of the flange has a density of the pulp fibre material that is less than the maximum density of the pulp fibre material in the body.

The application discloses a pulp bleaching method based on electric field gradient coupling oxygen nucleus. The method comprises the following steps: adding pulp into a reaction kettle, adding alkali and a protective agent, stirring and mixing, and heating; when the temperature is heated to 90-100 DEG C, the temperature is kept, a direct current electric field is applied to the reaction kettle and oxygen is introduced under high-speed stirring, and reaction is carried out for 3-5 min; reaction is carried out for 30-120 min under low-speed stirring. The method solves the problems of low reaction efficiency and low oxygen utilization rate in the existing oxygen delignification process. By applying a direct current electric field to the outer wall of the reaction kettle, the oxygen molecules are separated by the electric field force, and the combination ability with the surface of the pulp fiber is improved. The method significantly improves the removal efficiency of lignin, and significantly improves the pulp brightness and Kappa number. The application is suitable for the field of pulping and papermaking, and has important significance for the bleaching process with high environmental protection requirements.

A cigarette filter that reduces harmful smoke components is disclosed. In one view, the present invention provides a cigarette filter comprising a paper sheet, wherein the paper sheet comprises pulp fibers and chitosan fibers, and the pulp fibers comprise at least one of single fibers and mixed fibers having an average coarseness of 13 mg / 100 m or more.

To increase the rigidity and strength of paper mannequins. [Solution] A paper mannequin doll 1 containing mulberry fibers and pulp fibers, wherein the mixing ratio of mulberry fibers to pulp fibers is in the range of mulberry fibers:pulp fibers = 1:1 to 1:3 by mass ratio.

The invention provides a composite metal catalyst and application thereof in biological combined light treatment paper pulp bleaching. The method comprises the following steps: dividing and brooming cooked paper pulp fibers by adopting biological pretreatment, and then carrying out illumination bleaching under simulated sunlight irradiation by adopting a metal photocatalyst (ZnO, ZFO, ZAO, ZMO and the like). According to the mild treatment method, the whiteness of the paper pulp is improved, and meanwhile it is guaranteed that fibers are not damaged. Compared with traditional chemical bleaching, biological combined light treatment bleaching has the advantages that the content of pollutants in wastewater is greatly reduced, meanwhile, reacted metal oxides can be recycled, and the combined treatment method can be used as a novel paper pulp fiber bleaching mode.

The utility model relates to the technical field of separating devices, and discloses an efficient paper pulp fiber separating device which comprises a box body, a cover plate is fixedly installed on the top of the box body, a feeding cylinder is arranged in the middle of the cover plate in a communicated mode, and a driving motor is fixedly installed in the middle of the lower surface of the box body. A discharging pipe is arranged on one side of the bottom of the box body in a communicating manner, and a valve is mounted on the discharging pipe; bottom plates are fixedly mounted on the inner sides of transmission shafts of the driving motors. Through the arrangement of the spray head, the spray holes and the pump body, water can be supplied to the spray head through the pump body via the hose, water in the spray head is sprayed out of the spray holes and sprayed to the filter holes of the filter cartridge, pressurized water can wash off impurities or slurry at the bottoms in the filter holes, meanwhile, the filter cartridge can be comprehensively cleaned through a filter cartridge rotating structure, and the continuous anti-blocking water spraying design can be used for cleaning the filter cartridge. The separating and filtering efficiency can be effectively improved.

The invention discloses a preparation method of high-performance cellulose insulation paper modified by nano-alumina. The preparation method comprises the following steps: preparing a nano-alumina dispersion liquid, preparing a nano-cellulose dispersion liquid, adding paper pulp fibers, the nano-alumina dispersion liquid and the nano-cellulose dispersion liquid into deionized water, and carrying out papermaking, the mass fraction of the nano cellulose in the modified cellulose edge paper is 1-12%. According to the preparation method provided by the invention, nano aluminum oxide and nano cellulose particles are adopted as modified materials, a large number of heat conduction channels are formed in a fiber structure of the insulation paper, the heat conduction performance of the insulation paper is improved, and the insulation paper can still keep stable performance and is not prone to thermal aging and deformation in a high-temperature environment; a large number of traps can be formed in the paper, migration of charged particles is hindered, conductive current is reduced, and the volume resistivity of the insulation paper is improved; the method is simple in steps and low in cost, and industrial production and practical application of the insulation paper are facilitated.

The purpose of the present invention is to improve the retention of highly absorbent polymer particles in an absorbent containing broad-leaved tree pulp fibers. The problem is solved by an absorbent article provided with an absorbent material (50) having an absorbent body (56) and a packaging sheet (58) that wraps the absorbent body (56), the absorbent body (56) being formed by mixing and aggregating pulp fibers and highly absorbent polymer particles, and the highly absorbent polymer particles (56p) being formed by mixing and aggregating pulp fibers and highly absorbent polymer particles (56p). The ratio of particles having a particle diameter smaller than the average fiber length of the broad-leaved tree pulp fibers before swelling is 60 mass% or more, and the absorbent material (50) has a plurality of highly compressed sections (51) that are compressed in the thickness direction (TD) and are arranged at intervals so as to be recessed from the surface of the absorbent material (50) into the absorbent body (56). In the arrangement region of the plurality of high-compression sections (51), portions other than the high-compression sections (51) are non-high-compression sections (52) that are thicker and lower in density than the high-compression sections (51), the shortest distance of each of the high-compression sections (51) with respect to the closest other high-compression sections (51) is 1-4 mm, and the area of each of the high-compression sections (51) is 2-200 mm2.

The utility model relates to a kind of degradable filter cotton for air purification, including filter cotton body, the filter cotton body is sequentially first filter layer, second filter layer and third filter layer from top to bottom, the first filter layer is degradable bamboo fibre layer, the second filter layer is degradable polylactic acid fibre layer, the third filter layer is degradable wood pulp fibre layer, and the first filter layer, second filter layer and third filter layer between all adopt step-by-step encryption structure, and are prepared by hot air forming technology.The utility model is by using bamboo fibre, polylactic acid fibre and wood pulp fibre as filter layer, compared with traditional non-degradable filter cotton, can be naturally decomposed after being discarded, reduce environmental pollution, meet environmental protection concept, solve the mainstream filter cotton in market after use cycle end, difficult to degrade in natural environment, not only occupy a large amount of land resources, but also release harmful substances pollute soil and water source, cause long-term damage to ecological system problem.

Provided is a pulp-blended nonwoven fabric wipe which has excellent liquid-absorbing properties and strength, and in particular has little decrease in strength when wet. The problem is solved by a paper pulp-blended nonwoven fabric wipe in which paper pulp fibers and regenerated cellulose fibers are entangled, the paper pulp-blended nonwoven fabric wipe having a basis weight of 30-90 g / m2, and the regenerated cellulose fibers being lyocell.

The invention discloses a composite modified coal-based solid waste filler as well as a preparation method and application thereof, and belongs to the technical field of inorganic solid waste recycling and green packaging materials. According to the process, the composite modified filler is obtained through multi-step synergistic modification of acid treatment, alkali treatment, silane coupling agent treatment and cationic polymer treatment in sequence; and mixing the filler with defibered plant paper pulp fibers, and carrying out wet molding and drying to obtain the high-performance packaging material. According to the synergistic modification process, high-content (35-55 wt%) filling of the coal-based solid waste is realized, the prepared material has excellent mechanical properties and environmental compatibility, the wet strength retention rate is greater than or equal to 70%, and the water absorption rate is less than or equal to 5%.

The present invention concerns AN ATTRACTIVE APPEARANCE TOBACCO PROCESSED PAPER WITH VARIOUS COLORS FOR TOBACCO WRAPPERS AND BINDERS, more specifically, the present invention relates to paper that is processed from tobacco material, so it has tobacco content in it. The binding and wrapping paper in the present invention also has an attractive, aesthetic, and desirable appearance, for example, imitating the original color of tobacco leaves. The binding and wrapping paper of tobacco produced in the present invention is generally made from tobacco material, pulp fiber, filler, and colorant. The appearance of the binding and wrapping paper can be colored according to the user's needs.

The present invention provides a roll-type paper towel packaging that has a core outer diameter within a certain range, is a high-basis-weight 1-ply roll-type paper towel packaging containing synthetic fibers, has good film packaging properties and aesthetic appeal, and is easy to use as a roll product. [Solution] The invention comprises a roll of paper towels, each containing pulp fibers and synthetic fibers, wound into a roll, and a packaging film that wraps each roll in a caramel-like wrapper, with a basis weight of 40 g / m². 2 More than 150g / m 2 The following conditions apply: the core outer diameter of the roll of paper towels is between 25 mm and 55 mm, and the roll cross-sectional area excluding the hollow portion is 30 cm². 2 over 190cm 2 Below are the specifications for rolls with a diameter of 75 mm to 160 mm and a roll density of 0.05 g / cm². 3 More than 0.19g / cm 3 The present invention provides a roll-shaped paper towel packaging body in which the packaging film thickness is 20 μm or more and 55 μm or less.

The invention relates to the technical field of paper pulp foaming buffer material preparation, in particular to a paper pulp foaming buffer material and a preparation method and application thereof. Carrying out mechanical treatment on the paper pulp fiber suspension to obtain a fibrillated paper pulp fiber suspension; mixing the fibrillated paper pulp fiber suspension with an electrolyte to obtain a paper pulp / electrolyte mixed solution; mixing the paper pulp / electrolyte mixed solution with a surfactant, and foaming to obtain paper pulp / electrolyte foaming slurry; and placing the paper pulp / electrolyte foaming slurry in a porous mold to remove a liquid phase, and drying to obtain the paper pulp foaming buffer material. The paper pulp foaming buffer material provided by the invention has excellent mechanical property, heat insulation property, machinability and biodegradability, and the packaging buffer application of the paper pulp foaming material to articles such as light fragile products and temperature-sensitive products is obviously expanded.

The utility model provides a kind of pulp tank and the pulp equipment with it, pulp tank includes pulp tank body;Slurry inlet pipe, be located at the bottom of pulp tank body and with the pulp tank body intercommunication, to send slurry to the pulp tank body inside by slurry inlet pipe;Slurry discharge port, be located at the bottom of pulp tank body and with it intercommunication, to discharge slurry after pulp;Suction pipe, be located at the bottom of pulp tank body and with it intercommunication, the outlet end of suction pipe is used to communicate with pulp mould, to send vacuum to pulp mould, to make paper pulp fiber in slurry under the action of vacuum form initial wet embryo in pulp mould;Wherein, slurry inlet pipe, suction pipe are integrally formed with pulp tank body respectively Settings solve the problem that the strength of pulp tank is insufficient, pipeline system complexity is high and the problem of low assembly efficiency caused by pipeline and pulp tank field welding in prior art.

This invention provides a paper-based hydrophobic transparent film and its preparation method, comprising: (1) disintegrating and finely beating paper pulp fibers, followed by concentration and subsequent alkalization and etherification reactions, followed by washing and neutralization and mechanical nano-sizing to obtain CNF gel; (2) adding glycerol and boric acid solution to the CNF gel and obtaining a core layer system by high-speed shearing; (3) coating a first layer of PVA solution onto a substrate, drying the surface, coating the core layer system onto the partially dried first layer of PVA, and then coating a second layer of PVA solution onto the partially dried core layer system to form a "wet / semi-dry" laminated structure; (4) subjecting the laminated structure to gradient temperature drying; and (5) subjecting the dried film to surface hydrophobic coating treatment and calendering treatment to obtain a paper-based hydrophobic transparent film. This environmentally friendly paper-based transparent film can maintain high transparency, achieve high strength and high toughness, and possess excellent water resistance / hydrophobic properties.

Provided is a method for producing a recycled member derived from used absorbent articles, that is highly safe and provides a high cleaning effect. This method for producing a recycled member derived from used absorbent articles comprises a dehydration / washing step (S3) and separation steps (S5, S7). The dehydration / washing step includes stirring a mixed liquid obtained by mixing a mixture, which contains a plastic material, a superabsorbent polymer, and pulp fibers of used absorbent articles, and a treatment liquid, which contains a non-flammable hydrophobic organic solvent and a hydrophilic organic solvent and / or water, to dehydrate the superabsorbent polymer and the pulp fibers. The separation step includes separating at least one of the plastic material, the superabsorbent polymer, and the pulp fibers from the mixed liquid.

To provide an apparatus for producing cellulose nanofibers, which achieves a long life of a high-pressure pump of a high-pressure homogenizer.SOLUTION: A cellulose nanofiber manufacturing apparatus including a high-pressure homogenizer that performs a refining treatment of pulp fibers, wherein the high-pressure homogenizer includes a high-pressure pump that pressurizes a cellulose raw material that is a raw material of the cellulose nanofibers, and the high-pressure pump includes a cylinder that receives the cellulose raw material and an outer cylinder portion that covers 50% or more of an outer peripheral surface of the cylinder.SELECTED DRAWING: Figure 2

Provided is a method for producing a recycled member derived from used absorbent articles. The method is highly safe and provides a high cleaning effect. The method for producing a recycled member derived from used absorbent articles comprises a dehydration / washing step (S3) and separation steps (S5, S7). The dehydration / washing step includes stirring a mixed liquid obtained by mixing a mixture, which contains a plastic material, a superabsorbent polymer, and pulp fibers of used absorbent articles, and a treatment liquid, which contains a non-flammable hydrophobic organic solvent and a hydrophilic organic solvent and / or water, to dehydrate the superabsorbent polymer and the pulp fibers. The separation step includes separating at least one of the plastic material, the superabsorbent polymer, and the pulp fibers from the mixed liquid.