69 results about "Fluff pulp" patented technology

The present technology relates to fluff pulp having improved odor control and methods of making such fluff pulp. A fluff pulp is provided that includes bleached kraft fibers and a copper ion content of from about 0.2 ppm to about 50 ppm by weight of the bleached kraft fibers. The bleached kraft fibers include a length-weighted average fiber length of at least about 2 mm, a copper number of less than about 7, a carboxyl content of greater than about 3.5 meq / 100 grams; an ISO brightness of at least 80; and a viscosity of from about 2 cps to about 9 cps.

The invention relates to a hygienic product with a flow guide structure and production equipment and process thereof. The hygienic product comprises a bottom layer, an absorption layer and a surface layer, the absorbing layer is positioned between the bottom layer and the surface layer; the absorption layer comprises an absorption core body and a liquid permeable layer, the absorption core body is coated with the liquid permeable layer, the absorption core body is provided with a first liquid absorption area and a plurality of flow guide structures, and the flow guide structures are used for diffusing liquid absorbed by the absorption core body; the flow guide structure is integrally formed in the adsorption forming process of the absorption core body, the absorption core body comprises a second liquid absorption area, and the second liquid absorption area comprises the flow guide structure and the edge of the flow guide structure which extends outwards by 1 mm. The ratio of the fluff pulp density of the first liquid absorption area to the fluff pulp density of the second liquid absorption area ranges from 80% to 100%. The application has the effect of preventing the absorption core body from forming a high-density area.

The present invention provides a pulp sheet for producing fluff pulp that has excellent deodorizing properties, good crushability, and easily recovers its bulk after compression. [Solution] A pulp sheet for producing fluff pulp is prepared by blending (A) softener kraft pulp, (B) metal ion-containing cellulose fibers having ionic substituents and containing ions of one or more metal elements selected from Ag, Au, Pt, Pd, Ni, Mn, Fe, Ti, Al, Zn, or Cu, and (C) softener, such that (C) is 0.1 to 50 parts by mass per 100 parts by mass of the total of (A) and (B).

The utility model discloses an anti-pressure-sore urine isolation pad, and relates to the field of nursing materials, the anti-pressure-sore urine isolation pad comprises a PE waterproof bottom film, PE foam is bonded to the middle of the top surface of the PE waterproof bottom film, the PE foam is in a cross trapezoid shape, fluff pulp layers are bonded to the top surfaces of the PE waterproof bottom film and the PE foam, an SAP super absorbent resin layer is bonded to the top surface of the fluff pulp layer, and the SAP super absorbent resin layer is bonded to the top surface of the fluff pulp layer. PE foam of a cross-shaped trapezoidal structure is additionally arranged between the PE waterproof bottom film and the fluff pulp layer and between the fluff pulp layer and the hot air non-woven fabric surface layer, so that the fluff pulp layer, the fluff pulp layer and the hot air non-woven fabric surface layer form a form with the middle higher than the two sides; therefore, when urine leaks in the middle, the speed that the urine overflows towards the two sides can be increased, the urine absorption speed is increased, the time that the human body makes contact with the urine is shortened, bedsores are reduced, meanwhile, the flow guide grooves are formed in the surface of the PE foam, and the speed that the urine overflows towards the two sides can be increased through the flow guide grooves.

The present invention discloses a nursing pad with a gradient absorption structure and a composite process thereof, relating to the field of nursing pads. The nursing pad comprises: a flow-guiding surface layer, an absorption layer, a water-locking support layer, a microchannel layer, and a PE film bottom layer, which are composited in sequence from top to bottom; the absorption layer comprises low-crosslinked SAP and fluff pulp, and has a thickness of 3-4 mm; the water-locking support layer comprises high-crosslinked SAP, PVA fiber, and hot-melt adhesive powder, and has a thickness of 2-3 mm; the density of the absorption layer is 0.1-0.15 g / cm 3 The density of the water-locking support layer is 0.3-0.4 g / cm 3 , used to form a density gradient structure from the absorbent layer to the water-locking support layer. By building on the rapid water absorption properties of the low-crosslinked SAP in the absorbent layer, combined with the highly crosslinked SAP and the rigid network of PVA fibers in the water-locking support layer, a gradient density structure of soft core and hard shell is formed. This avoids the uneven thickness problem caused by the disordered accumulation of SAP in traditional homogeneous structures, thereby further improving the fit of the nursing pad to the skin and reducing the risk of pressure sores caused by localized pressure concentration.

The invention discloses wood pulp defibrating equipment and a defibrating method thereof.The defibrating equipment comprises a shell, a rotor rotatably installed in the shell and a stator structure fixedly installed on the inner wall of the shell, the shell is provided with a feeding port and a cotton outlet, a plurality of movable tooth pieces are installed in the circumferential direction of the rotor, and the movable tooth pieces are arranged on the inner wall of the shell. The multiple movable tooth pieces are arranged on the circumferential surface of the rotor in a staggered mode to form a double-helix mode. And the stator structure comprises a pre-crushing part, a defibrating part and a homogenizing part which are sequentially distributed outside the circular arc of the rotor, and the pre-crushing part, the defibrating part, the homogenizing part and the movable tooth pieces correspondingly form a pre-crushing area, a defibrating area and a homogenizing area. According to the wood pulp defibrated by the method, fibers with the fiber length of 2.5 mm or above account for 95% or above, fibers with the fiber width of 35 microns or above account for 95% or above, the dust rate is within 4%, the high defibrating capacity of 500-1500 kg / h is achieved, and efficient defibrating, gentle carding and fiber protection are achieved.

The invention provides bamboo reed bleached fluff pulp as well as a preparation method and application thereof, and belongs to the field of papermaking. According to the characteristics of low bonding strength and small bursting strength of the arundo donax short fibers and parenchyma cells, the use of chemicals such as a debonding agent and the like is canceled, the preparation process is different from a traditional bamboo fluff pulp preparation process, the components of the arundo donax short fibers are reserved, the three-dimensional structure of the arundo donax bleached fluff pulp fibers is optimized, the water absorption and water retention capacity of the fluff pulp is improved, and meanwhile, the paper pulp yield is optimized. According to the raw material characteristics of the bamboo reed, the process conditions of prehydrolysis, cooking and bleaching are optimized, and an economical and efficient bleached fluff pulp product of the bamboo reed pulp is produced, so that the method has good practical application value.

The utility model relates to a disposable transfer nursing drawsheet which comprises a composite polymer drawsheet assembly and a handle assembly. The composite polymer drawsheet assembly and the handle assemblies are rectangular, the handle assemblies are connected to the edge openings of the long edges of the two sides of the composite polymer drawsheet assembly, a plurality of handle holes are formed in the handle assemblies at equal intervals, and the handle holes are 8-shaped; the composite polymer drawsheet assembly comprises a surface skin-friendly non-woven fabric layer, a hot melt adhesive layer, an upper tissue layer, a polymer water-absorbent resin layer, a fluff pulp layer, a lower tissue layer and a bottom lamination non-woven fabric layer. The surface skin-friendly non-woven fabric layer, the upper paper towel layer, the high-molecular water-absorbent resin layer, the fluff pulp layer, the lower paper towel layer and the bottom laminated non-woven fabric layer are sequentially connected in a laminated manner; a hot melt adhesive layer is arranged between the surface skin-friendly non-woven fabric layer and the upper tissue layer, and a hot melt adhesive layer is arranged between the lower tissue layer and the bottom lamination non-woven fabric layer.

The invention relates to the technical field of hygienic products, in particular to an air-laid glue-free core body for solidifying fluff pulp and SAP (Super Absorbent Polymer) by using superfine melt-blown fibers. The preparation method comprises the following steps: forming fluff pulp fibers into a base material layer through air laying; applying the modified SAP material to the substrate layer; the polymer melt forms melt-blown fibers through a melt-blowing process, and the melt-blown fibers directly deposit and penetrate into the SAP-containing base material layer when the melt-blown fibers have thermal viscosity to form a three-dimensional intertwining structure; and finally, carrying out hot pressing treatment on the structure, and realizing integral solidification under the condition of no additional adhesive by utilizing the thermal viscosity of the melt-blown fibers. The modified SAP material is obtained through pretreatment of an epoxy compound and coating treatment of mixed slurry of nanocrystalline cellulose and a functional additive. The problems that SAP particles in a traditional core body are prone to migration, powder falling and gel blocking are effectively solved through the glue-free solidification technology, and the obtained core body is high in absorption speed, low in back seepage amount, stable in structure and suitable for sanitary products such as paper diapers and sanitary napkins.

This invention discloses a method for modifying fluff pulp, which can effectively increase the porosity between fibers, thereby improving its liquid conductivity. The preparation method includes the following steps: treating different types of softwood pulp boards with ultrasonic waves and 1,2,3,4-butanetetracarboxylic acid (BTCA) crosslinking. Ultrasonic pulverization effectively reduces the bonding force between fibers, while the polycarboxylic acid crosslinking method gives the fibers a large number of pores, improving fiber bulk and fixing fiber morphology. After this treatment, the fiber morphology shows significant curling, twisting, and indentation, thus affecting its liquid conductivity. The fluff pulp modification method of this invention uses commercial softwood pulp boards as raw materials. Through a simple and easy modification method, it effectively overcomes the shortcomings of domestically produced fluff pulp, such as slow absorption rate, long liquid absorption time, and low bulk, thus improving production efficiency.

The utility model discloses a dry and comfortable low-back-seepage composite non-woven fabric, which relates to the technical field of non-woven fabrics and comprises a non-woven fabric surface layer, a charcoal paper pulp layer, a fluff pulp layer, an SAP (super absorbent polymer) high-molecular layer, a tissue and a backing. After water enters the non-woven fabric surface layer and permeates into the non-woven fabric surface layer, the charcoal paper pulp layer and the fluff pulp layer directly absorb water and settle to the SAP polymer layer, so that the operation effect of absorbing cores one by one to lock and draw water is achieved, and the paper towel and the back lining are applied to the skin in a dry and comfortable mode; the operation effect of blocking low back seepage of water infiltrated from the diaphragm and the fluff slots is achieved through the arc-shaped diaphragm surface and the corrugated layer surface, so that the absorption core body draws and locks water under the centripetal guide of the corrugated sector and the round edge of the ball core; and the water flow which cannot be locked can pass through the absorption core pipe between the convex arc-shaped layer surface and the concave arc-shaped layer surface to achieve the pipe ring spherical surface water locking effect of the absorption core, so that the absorption ball cores in the round edge array matrix of the ball cores one by one can fully absorb water one by one to achieve the dry and comfortable effect on the paper towel and the backing.

The invention relates to a method for producing 3-dimensional shaped products from fluff pulp material and such products. The method according to the invention comprises the steps of: providing a fluff pulp material; providing an airlaid stream of fluff pulp material to a 3-dimensional forming mold; forming a product in the mold; and releasing the 3-dimensional shaped product from the mold.

To provide an absorbent article and a bodily fluid detection method that can repeatedly detect even mild urinary incontinence. [Solution] The present disclosure provides a light incontinence pad 2 comprising a liquid-permeable skin-side sheet 21, a liquid-impermeable non-skin-side sheet 23, and an absorbent body 22 disposed between the skin-side sheet 21 and the non-skin-side sheet 23, wherein the light incontinence pad 2 is provided with at least one conductive member 24c on one side and at least one conductive member 24c on the other side, spaced apart in the width direction with respect to the center line in the width direction of the light incontinence pad 2, and the proportion of fluff pulp in the absorbent body 22 is 15% by weight or less.

The invention provides a fluff pulp board. The complete raising and defibering time of the fluff pulp board is not longer than 30 s, and the tightness is not higher than 0.6 g / cm < 3 >. The fluff pulp board is made of mixed fibers of needle-leaved wood fibers and bamboo fibers, and the mass percent of the needle-leaved wood fibers is 30%-60%; the average fiber length of the mixed fibers is larger than 2 mm, and the length weighted proportion of fine fibers is lower than 17%. The invention further provides a preparation method of the fluff pulp board. According to the technical scheme, the respective advantages of the coniferous wood and the bamboo wood are considered, the using requirements of downstream customers can be met, the using amount of the coniferous wood can be effectively reduced, the purchasing period of the coniferous wood is prolonged, and closed-loop cyclic utilization of bamboo wood resources in the natural world is achieved.

Biodegradable and compostable food packaging units made from a molded pulp or fluff pulp having a laminated multi-layer member and methods of making such food packaging units are disclosed. The present invention relates to a biodegradable food packaging unit made of a mold pulp or a fluff pulp and a method of manufacturing such a biodegradable packaging unit. A package according to the present invention comprises a food receiving and / or carrying compartment comprising a biodegradable laminated multilayer member comprising: an inner cover layer comprising an amount of biodegradable aliphatic polyester; a first intermediate layer of biodegradable material for connecting and / or sealing adjacent layers; a functional layer comprising a vinyl alcohol polymer; a second intermediate layer of biodegradable material for connecting and / or sealing adjacent layers; and an outer cover layer comprising an amount of a biodegradable aliphatic polyester, and wherein the food packaging unit is a compostable food packaging unit.

The present application relates to the technical field of sanitary products, and particularly relates to a biodegradable nursing pad and a preparation process thereof. The nursing pad comprises a skin-friendly top layer, a composite core absorption layer and a gas-impermeable bottom layer from top to bottom. The composite core absorption layer comprises a gel-embedded skeleton composed of an air-laid wood pulp fiber web and a composite antibacterial hydrogel in-situ cross-linked and embedded in the pores of the web, and a fluff pulp fiber layer fixed to at least one surface of the skeleton. The composite antibacterial hydrogel comprises hydrophilic reinforcing fibers modified by a silane coupling agent with a hydrophilic group, a sodium alginate matrix and zinc ions. The nursing pad prepared by the present application has excellent rapid absorption, high antibacterial efficiency and high biodegradability, and solves the problem that traditional products are difficult to have both performance and environmental protection.

The utility model relates to sanitary article technical field especially, more particularly to a kind of foam cotton composite core structure, from top to bottom sequentially include surface non-woven fabric, PU foam cotton layer and absorbent core, the absorbent core includes lower water absorption layer and second high molecular absorbent resin applied on lower water absorption layer, surface non-woven fabric and absorbent core between place PU foam cotton layer promote the softness of core body, compared with existing core body, it is more light, experience is better, SAP is embedded in absorbent core, without wrapping SAP also can not scatter, water-absorbing resin has certain weight and is applied on certain density fluff pulp, when contact with skin, it is thick and hard stiff, and comfort is low.

The invention relates to the technical field of hygienic products, in particular to a biodegradable nursing pad and a preparation process thereof. The nursing pad comprises a skin-friendly top layer, a composite core absorption layer and an anti-seepage breathable bottom layer from top to bottom. The composite core absorption layer comprises a gel embedded framework and a fluff pulp fiber layer, wherein the gel embedded framework is composed of an air-laid wood pulp fiber net and composite antibacterial hydrogel which is cross-linked in situ and embedded in pores of the air-laid wood pulp fiber net, and the fluff pulp fiber layer is fixed to at least one surface of the framework. The composite antibacterial hydrogel comprises hydrophilic reinforced fibers modified by a silane coupling agent with hydrophilic groups, a sodium alginate matrix and zinc ions. The prepared nursing pad has excellent rapid absorption, efficient antibacterial and high biodegradability, and the problem that performance and environmental protection of a traditional product are difficult to consider at the same time is solved.

The invention relates to the technical field of hygienic products, and discloses a rapid-absorption sanitary napkin and a preparation method thereof.The rapid-absorption sanitary napkin comprises a surface layer which is a flow guide layer subjected to water repellent treatment and comprises polypropylene and polyethylene bi-component fibers in the mass ratio of 55-65: 35-45; the middle layer comprises a three-dimensional convex flow guide grid and an absorption core body, the absorption core body comprises SAP and fluff pulp, and the SAP accounts for 50-60% by mass; the bottom layer is a breathable waterproof film which is formed by compounding a polyethylene base material and a non-woven fabric, and the base material comprises 15-25wt% of calcium carbonate particles; the protruding height of the flow guide grid ranges from 0.5 mm to 2.0 mm, and the width of the flow guide groove ranges from 0.3 mm to 0.8 mm. Through structural innovation of the flow guide layer and gradient design of the absorption core body, the synergism of the liquid absorption rate and the reverse osmosis prevention performance is remarkably improved; through combination of directional micropore forming of the breathable film and coupling optimization of technological parameters, long-acting breathability is synchronously achieved, the structure is stable, the environmental adaptability is enhanced, and the performance bottleneck of traditional hygienic products is broken through.

This utility model discloses a fluff pulp molding device for the production of sanitary products, including a workbench. A heating box is fixedly connected to the top of the workbench, and a molding die is inserted into the inner wall of the heating box. A stirring head is arranged above the molding die, and a fixing shell is installed on the outer wall of the stirring head. This utility model relates to the technical field of sanitary napkin production equipment. Through the cooperation of the heating box, stirring head, and fixing shell, the fluff pulp is added into the molding die during the molding process. The stirring head stirs the fluff pulp in the molding die, and after complete stirring, an extrusion plate extrudes the fluff pulp in the molding die, allowing the fluff pulp to be molded quickly. This makes the fluff pulp more stable after molding, solving the problem of uneven distribution of fluff pulp during the molding process, which leads to unstable product quality and affects the performance of sanitary products. It also addresses the problem that some devices have low molding efficiency and cannot meet the needs of large-scale production.

A fluff pulp paper rolling tool comprises a bottom plate, a first end plate is installed at one end of the bottom plate, a motor is installed on the first end plate, a first spline housing is connected to an output shaft of the motor, a second end plate is installed at the other end of the bottom plate, a drawing shaft is rotationally arranged on the second end plate, and a limiting disc is arranged at the outer side end of the drawing shaft. A second spline sleeve is arranged at the inner side end of the drawing shaft, and an inner supporting mechanism is arranged between the first spline sleeve and the second spline sleeve. According to the scheme, the two ends of the inner supporting mechanism are supported through the first spline housing and the second spline housing, so that the stability of the inner supporting mechanism during rotation is ensured, the disturbance problem occurring during rotation of the inner supporting mechanism is avoided, and in order to facilitate placement and fixing operation of the inner supporting mechanism, the second spline housing is arranged to be in a movable mode; in this way, connection and fixation of the inner supporting mechanism are facilitated.

The present invention refers to a disposable absorbent hygiene article with high sensitivity to nitrites that comprises a nitrite indicator hot-melt adhesive (5) that detects nitrites in urine. The disposable absorbent hygiene article of the present invention is comprised of an inner layer or topsheet (1) comprising a non-woven, an acquisition distribution layer (ADL) (2), an absorbent core (3) comprising a super absorbent polymer (SAP) + fluff pulp, and an outer layer or backsheet (4) comprising a polyethylene or polypropylene film with a nitrite indicator hot-melt adhesive (5) which is applied in the inner side. The disposable absorbent hygiene article of the present invention is particularly but not exclusively, a diaper, an incontinence pad or a sanitary napkin.

The utility model relates to the technical field of maternal and child products, in particular to a moisture absorption object capable of preventing displacement and side leakage, a protection pad, a sanitary towel and menstrual period trousers, which comprises a high-molecular water-absorbent resin layer and a fluff pulp layer coated outside the high-molecular water-absorbent resin layer, an opening is integrally formed in the upper surface of the fluff pulp layer, a deformation groove integrally formed with the high-molecular water-absorbent resin layer is formed below the opening, a weak groove is further integrally formed in the position, corresponding to the deformation groove, of the lower surface of the fluff pulp layer, and side guardrails made of sisal fiber materials are arranged on the two sides of the upper surface of the fluff pulp layer. When the clothes penetrate through the moisture absorption object, the upper surface of the moisture absorption object is turned upwards along the deformation grooves to expand through extrusion force of the clothes on the moisture absorption object, and liquid flowing out towards the two sides is absorbed through the side guardrails.

To provide an absorber having sufficient absorption performance while adopting a natural product-derived raw material as a main raw material of a superabsorbent polymer, and an absorbent article including the absorber, and absorbent article including the absorber.SOLUTION: An absorber of a two-layer structure comprising a first absorber to be disposed on a skin side surface of a wearer and a second absorber to be disposed on a non-skin side surface of the wearer, the absorber is characterized in that the first absorber is comprised of a non-natural product-derived superabsorbent polymer and fluff pulp, and has a slit along a longitudinal direction, and the second absorber is comprised of a natural product-derived superabsorbent polymer and a base nonwoven fabric.SELECTED DRAWING: Figure 2

The invention discloses a reconstituted tobacco cigar coating, a preparation method thereof and a cigar. The reconstituted tobacco cigar coating is prepared from tobacco stems subjected to lignin low-weight treatment, fluff pulp subjected to lignin low-weight treatment and a cigar material. The preparation method comprises the following steps: adding a biological enzyme into a material for extraction, separating an extracting solution and a solid matter, carrying out vacuum concentration on the extracting solution, and adding a pH regulator to form a coating solution; and pulping the fixture and manufacturing the fixture into a sheet base, and coating the surface of the sheet base with a coating liquid and a sizing agent to obtain the reconstituted cigar coating of the tobacco cigar. According to the preparation method provided by the invention, the cigar coating has high physical strength, low lignin content, remarkable oily feeling, cigar flavor and water bleeding prevention capability, the quality of the reconstituted tobacco cigar coating is improved, and the requirements of medium-speed and high-speed mechanical rolling setting are met.

The invention discloses a melt-blown cloth absorption core and a preparation method thereof, and relates to the field of hygienic products. The melt-blown cloth absorption core comprises an upper coating layer, an SAPO / fluff pulp absorber and a lower coating layer which are sequentially arranged, the upper coating layer and the lower coating layer are both made of melt-blown non-woven cloth subjected to hydrophilic finishing, and the SAPO / fluff pulp absorber is obtained by evenly mixing modified wood pulp fibers and super absorbent resin according to the weight ratio of (10-30): (20-80). The melt-blown non-woven fabric is subjected to hydrophilic modification by grafting acrylamide and chitosan, and the modified wood pulp fibers are obtained by grafting wood pulp fibers and carboxymethyl cellulose. The absorption core body prepared by the invention keeps good liquid absorption speed and softness, does not lump, does not leak powder, and reduces back seepage.

The invention relates to the technical field of core forming, in particular to a fluff pulp layer forming device for paper diaper core production. An air channel in the device sequentially comprises a flow dividing assembly and an oscillation assembly from top to bottom. The oscillation assembly comprises an elasticity enhancing set and a screen, the elasticity enhancing set comprises a first elastic rope, a second elastic rope and a stirring piece, and the stirring piece conducts reciprocating motion to enable the second elastic rope to vibrate. The two elasticizing sets are symmetrically arranged up and down, and the screen is arranged between the two elasticizing sets. According to the invention, the shunting assembly is arranged in the air duct, carding and dispersion are carried out in the falling process of piled fluff pulp, and the fluff pulp falling controllability is improved while uniform falling of the fluff pulp is ensured; and by arranging the oscillation assembly, two elastic groups are matched with the screen in the middle, so that the fluffiness of fluff pulp is improved.

The present invention addresses the problem of providing a fluff pulp board capable of forming a fluff pulp (fluff pad) in which the liquid backflow rate is sufficiently reduced. The invention relates to a pulp board for fluff pulp, which comprises broad-leaved tree pulp and is described in (A) to (D) below. (A) A fluff pulp board in which the content of broad-leaved tree pulp relative to the total pulp component is 25 mass% or more, and the total content of straight-chain fatty acids having 24, 26, and 28 carbon atoms is 300-1000 ppm. And (B) a fluff pulp board in which the xylan content is 20 mass% or less and the Canadian standard freeness of the dissociated pulp is 400-640 mL. And (C) a fluff pulp board in which the proportion of the number of fibers weighted at a length in the range of 0-0.1 mm in the length-weighted fiber length distribution is 10% or less. And (D) a fluff pulp board in which the fiber roughness measured by dissociating the fluff pulp board is 0.030-0.120 mg / m.

The application provides a shoe press felt for papermaking process reconstituted tobacco and a preparation method and application thereof, which comprises an upper surface layer, a middle fiber layer and a lower surface layer; the upper surface layer and the lower surface layer independently comprise a mixture of acrylonitrile-butadiene-styrene copolymer (ABS) and polylactic acid (PLA) with a volume ratio of (5:1) to (3:1); and the middle fiber layer is prepared from conifer fiber fluff pulp. The felt surface layer prepared from the mixture of ABS and PLA can block the direct contact between the pollutants of the papermaking process reconstituted tobacco and the water-absorbing fiber layer (the middle fiber layer), avoid the blockage of the felt caused by the direct contact between the pollutants and the fiber layer, and further improve the dehydration efficiency of the felt; the fiber layer prepared from the conifer fiber fluff pulp has good water absorption, and can greatly improve the dehydration efficiency of the felt.