CN105463704A - Moisture absorbing article - Google Patents
Moisture absorbing article Download PDFInfo
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- CN105463704A CN105463704A CN201511023597.2A CN201511023597A CN105463704A CN 105463704 A CN105463704 A CN 105463704A CN 201511023597 A CN201511023597 A CN 201511023597A CN 105463704 A CN105463704 A CN 105463704A
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- absorbing material
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
- D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
- D06M23/16—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/11—Oleophobic properties
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nonwoven Fabrics (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention provides a moisture absorbing article. The moisture absorbing article comprises a liquid penetrating top layer and a waterproof breathable composite absorbing material from top to bottom. The waterproof breathable composite absorbing material is formed by an upper fiber net and a lower fiber net. The moisture absorbing article is characterized in that the upper fiber net comprises ultra water-absorbing property short fiber and cellulosic fiber, one side, away from the upper fiber net, of the lower fiber net is coated with a fluorine-containing water and oil repellent composition finishing agent, the upper fiber net and the lower fiber net are welded through ultrasonic waves, and one side, which is not coated with the water and oil repellent composition finishing agent, of the lower fiber net is welded to the upper fiber net through ultrasonic waves. The water absorption rate of the waterproof breathable composite absorbing material is 10-40 g/g, the moisture holding rate is 5-20 g/g, the water vapor transmission rate is 4000-7000 g/m<2>.day, the anti-static water pressure is 40-60 mbar, water involved in the water absorbing rate and the moisture holding rate is artificially-synthesized urine, and release force of the upper fiber net and the lower fiber net is 3-5 N/25 mm.
Description
Technical field
The present invention relates to a kind of disposable absorbent article, particularly relate to the disposable absorbent article containing alternative traditional absorptive core and the waterproof and breathable compound absorbing material every liquid counterdie.
Background technology
Disposable absorbent article structurally mainly comprises from top to bottom: transparent liquid top layer, absorptive core and liquid-tight bottom.Absorptive core, between the transparent liquid top layer and liquid-tight bottom of disposable absorbent article, mainly plays the effect absorbing and store liquid.Traditional absorptive core is generally obtained with structure distribution mixed-forming according to a certain percentage by the fluff pulp fibers after pulverizing and hydroscopic high-molecular resin particle, its defect is that absorptive core thickness is higher, easy sticks together, ruptures, a large amount of dust can be produced in absorptive core production process, complex manufacturing, brings inconvenience to the production of disposable absorbent article.
Publication number is that the application for a patent for invention of CN1658810A discloses a kind of multilayer absorbent core body, and this absorptive core contains synthetic fiber, to improve the fluid transport performance of obtained absorbent article.Synthetic fiber in the innermost layer of absorptive core and/or intermediate layer especially improve the wettability again of absorbing products.Described absorptive core can join in many absorbent articles, comprises diaper, feminine hygiene and incontinence pad.
Publication number is that the application for a patent for invention of CN102715986A discloses a kind of high-efficiency water-absorbing composite absorption core body, this composite absorption core body comprises top layer and the bottom of Time of Fluff Slurry or nonwoven fabric formation, the compounding substances that one deck comprises tripoli powder and borneol powder is evenly provided with between top layer and bottom, top layer and bottom are linked together by sewing thread, and described composite absorption core body is sewed line is divided into polylith network structure, improve composite absorption core body to the absorption of liquid and diffusion velocity, and cancellated composite absorption core body, not easily conglomeration is produced during distortion, the situation of fracture or clot.
The subject matter that the disposable absorbent article that adopts above-mentioned absorptive core to make exists is, 1, disposable absorbent article thickness is higher, is at least greater than 3mm; 2, after core body moisture absorption, easily there is slippage in levels under the effect of external force, affects the integrality of disposable absorbent article; 3, not there is the function every liquid.The liquid-tight bottom of traditional disposable absorbent article generally adopts the polyethylene breathable film with waterproof and breathable performance, but polyethylene breathable film forms because of its component and characteristic makes its vapor transfer rate be confined to 3000g/m
2within day.Because vapor transfer rate is lower, when after disposable absorbent article moisture absorption, wearer easily feels sultry, moist, affects comfortableness.
Summary of the invention
The object of the invention is the defect in order to overcome prior art, a kind of disposable absorbent article is provided.Have good globality after this disposable absorbent article moisture absorption, even if the phenomenon of levels slippage also not easily occurs core body under the effect of external force, and this disposable absorbent article thickness is less, drastically increases the comfortableness of disposable absorbent article.
The invention provides a kind of disposable absorbent article, comprise transparent liquid top layer and waterproof and breathable compound absorbing material, this waterproof and breathable compound absorbing material is made up of upper and lower two layer web, it is characterized in that top fiber net comprises super water-absorbent staple fibre and cellulose fibre; The side away from top fiber net of lowermost fibre net applies fluorine-containing water and oil repellant composition finishing agent; Upper and lower two layer web is by ultrasonic bonding, and wherein ultrasonic bonding is crossed by the side of the uncoated water and oil repellant composition finishing agent of lowermost fibre net and top fiber Netcom; The water absorbent rate of this waterproof and breathable compound absorbing material is 10-40g/g, water conservation multiplying power is 5-20g/g, vapor transfer rate is 4000-7000g/m
2day, hydrostatic pressure resistant are 40-60mbar, and wherein water absorbent rate and the water described in water conservation multiplying power are synthetic urine; The peeling force of upper and lower two layer web is 3-5N/25mm.
Top fiber net of the present invention comprises the super water-absorbent staple fibre being at least greater than the thermoplastic fibre of 15wt%, the cellulose fibre of 8wt%-15wt% and having thermoplasticity and crimpiness.Great many of experiments shows, adding of thermoplastic fibre can improve fibroreticulate pull-off force, and along with the raising of thermoplastic fiber content, fiber web pull-off force improves thereupon.When the content of thermoplastic fibre is less than 15wt%, fiber web pull-off force can be caused not enough, occur the quality problems such as suspension, broken hole in process, cannot meet the demands.Described thermoplastic fibre is polyamide fiber.The raw material of described polyamide fiber is polyethylene or polypropylene or the composition of the two.
The water absorbent rate of super water-absorbent staple fibre is higher, but infiltration rate comparatively slow (being greater than 30s), water conservancy diversion effect is poor, the adding to play of cellulose fibre captures absorbing fluid and the function improving water conservancy diversion, improves infiltration rate and the diffusion of absorptive core.As do not added cellulose fibre in fiber web, absorptive core in use easily occurs sliding problems such as oozing, infiltration rate is slow.Along with the rising of cellulose fiber content, absorptive core infiltration rate rises thereupon, but fibroreticulate water conservation multiplying power declines thereupon, and the amount of bleeding back and absorptive core thickness obviously rise, and directly has influence on the comfortableness that disposable absorbent article is dressed.In order to ensure the water conservation multiplying power of absorptive core and absorbency and less absorptive core thickness, the content of cellulose fibre must control at 8wt%-15wt%.
The preferred super water-absorbent staple fibre of the present invention has thermoplasticity and crimpiness.Because the super water-absorbent staple fibre of routine does not have crimpiness and thermoplasticity, than great, fracture strength and extension at break are all lower, super water-absorbent staple fibre and other fiber is easily caused to cause a large amount of noil mixing in carding process, row yielding is lower, therefore will carry out experiment screening for super water-absorbent staple fibre.Through lot of experiments, final selected super water-absorbent staple fibre be by with acrylic acid series copolymer spinning solution for core layer raw material, polyvinyl alcohol spinning solution is cortex raw material, extrudes through core-skin type composite spinneret, the super water-absorbent staple fibre that hot-air dry spinning and heat cross-linking obtain; Described super water-absorbent staple fibre after coiling machine extrudes, has two-dimensional crimp and the super water-absorbent staple fibre obtained through drying cut-out by having certain thermoplastic tow.With acrylic acid series copolymer spinning solution for core layer raw material, polyvinyl alcohol spinning solution is cortex raw material, selects above-mentioned raw materials to be to make described super water-absorbent staple fibre have certain crimpiness and thermoplasticity.Because the polyvinyl alcohol of cortex has thermoplasticity, under mechanical external force extruding, good curling of processbearing astrocyte fastness, such fibre cohesion is strong, carding is good.Along with the raising of super water-absorbent staple fibre crimpiness, the cohesive force between super water-absorbent staple fibre and thermoplastic fibre, cellulose fibre progressively strengthens, and improves fiber web pull-off force.But crimpness is excessive, easily makes fibre-fibre friction coefficient too high, not easily process.Super water-absorbent staple fibre crimpness selected by the present invention is 8-15%.
Top fiber net thickness of the present invention is 0.1-1mm, and fiber web Gram Mass is 60-80gsm.
Lowermost fibre net of the present invention is the fused fiber net be combined to form of spun-bond process or meltblown or above-mentioned two kinds of methods, and Gram Mass is 40-80gsm.Hydrostatic pressure resistant index is waterproof every one of important indicator of liquid bottom, and the hydrostatic pressing that fiber web can bear is larger, water proofing property or leakage resistance better.Poisture-penetrability characterizes the important index of of fiber web comfortableness, and under certain conditions, the more, fibroreticulate poisture-penetrability better for the steam vapour amount passed through in the unit interval.Fibroreticulate Gram Mass directly has influence on poisture-penetrability and hydrostatic pressure resistant, and Gram Mass is larger, and hydrostatic pressure resistant is larger, and dampness is larger, and vapor transfer rate is less.Consider fibroreticulate poisture-penetrability and hydrostatic pressure resistant, the lowermost fibre net Gram Mass that the present invention selects is 40-80gsm, and thickness is 0.05-0.1mm.
The hydrostatic pressure resistant of the fused fiber net be combined to form of common spun-bond process or meltblown or above-mentioned two kinds of methods is lower, cannot meet as bottom disposable absorbent article every the requirement of liquid material.The present invention selects the side away from top fiber net of the finishing agent of fluorine-containing water and oil repellant composition to lowermost fibre net to arrange, and improves lowermost fibre net to the anti-permeability performance of water, oil and blood.Containing carbon-fluorine (C-F) group in the water and oil repellant composition of the coating of the side away from top fiber net of described lowermost fibre net.The water and oil repellant composition finishing agent that the present invention selects is NUVA1542LIQ (Clariant chemical industry), it contains continuously arranged chain fluoroalkyl compound, this structure result in lower surface tension, is generally 10-20mN/m, far below the surface tension of oil, water and blood.Lowermost fibre net is after fluorine-containing water and oil repellant composition finishing agent arranges, surface forms one deck water and oil repellant film, and make lowermost fibre net surface form hydrophobic grouping, surface tension declines, both stop passing through of aqueous water, oil, maintain again certain breathable moisture permeability.After arranging, though the vapor transfer rate of lowermost fibre net declines to some extent, but fall is little.Because water and oil repellant composition finishing agent forms the surface that thin film is coated on fiber, space between lowermost fibre network fiber is reduced to some extent, after arranging, non-weaving cloth vapor transfer rate declines to some extent, but the amplitude declined is little, because Organic fluoride non-fully are coated on the surface of fiber, just change surface property by carbon-fluorine (C-F) group oriented alignment in fiber surface, thus make it have water and oil repellant performance, so the vapor transfer rate impact of finishing agent on lowermost fibre net is little.
Upper and lower two layer web of the present invention adopts ultrasonic bonding, replaces traditional hot melt adhesive bonding.Containing rosin based or petroleum-type tackifying resin in hot melt adhesive, inevitably smell in heating use procedure, and resin added number directly have influence on peeling force between two layer web and vapor transfer rate.As too high in glue amount, easily cause the comparatively large and vapor transfer rate of goods smell significantly to decline; Glue amount is too low, and levels fiber web peeling force is lower, easily occurs layering.The ultrasonic welding technique that the present invention adopts make use of the thermoplasticity of web material, does not use any adhesive.Ul-trasonic irradiation is when fibrous web contacting surface, the dither of several ten thousand times per second can be produced, by upper weldment, ultrasonic energy is sent to welding zone, two fibroreticulate surfaces are made to produce friction at a high speed, thus produce high temperature on surface, two fibroreticulate contact surfaces melt rapidly, after adding certain pressure, make it be fused into one.After ultrasonic wave fails, contact surface coagulation forming, pad peeling force can, close to raw material pull-off force, prevent levels fiber web to be in use subject to external force and layering.Ultrasonic bonding pattern of the present invention is striated, and the pad at described edge, the waterproof and breathable compound absorbing material left and right sides is continuous print striated, and the width of striped is 2-5mm, wider than other pads, and its effect prevents liquid from both sides seepage.The pad of this waterproof and breathable compound absorbing material rear and front end is striped that is continuous or that be interrupted, and width is narrower, and the width of striped is 1-2mm, and liquid can be prevented from front and back end seepage.Except the part that waterproof and breathable compound absorbing material rear and front end and the left and right sides are welded, other pad of absorbing material is striped that is continuous or that be interrupted, and width is narrower, the width of striped is 1-2mm, its objective is while guarantee two layer web peeling force, effective minimizing bonding area, reduces the influence degree to vapor transfer rate.Between levels fiber web, the size of peeling force directly has influence on integrality and the comfortableness of waterproof and breathable compound absorbing material.Peeling force is too little, and levels fiber web, under the effect of external force, slippage, layering easily occurs; Along with the increase of peeling force, the fibroreticulate pliability of levels and Air permenbility decline thereupon, affect comfortableness.Through lot of experiments, finally determine that the peeling force between upper and lower two layer web is 3-5N/25mm.
According to waterproof and breathable compound absorbing material provided by the invention, its water absorbent rate is 10-40g/g, and water conservation multiplying power is 5-20g/g, and vapor transfer rate is 4000-7000g/m
2day, hydrostatic pressure resistant is 40-60mbar, and thickness is 0.1-1mm, and wherein water absorbent rate and the water described in water conservation multiplying power are synthetic urine.
The super water-absorbent staple fibre with crimpiness is applied in top fiber net by the present invention, and being conducive to increases the cohesive force between fiber, improves the pull-off force of top fiber net.After this waterproof and breathable compound absorbing material moisture absorption, there is good globality, even if also not easily there is the phenomenon of levels slippage under the effect of external force, alternative traditional absorptive core and using every liquid counterdie, there is the function of waterproof and breathable and absorption water conservation, this disposable absorbent article has good globality after moisture absorption, even if be the phenomenon that levels slippage also not easily occurs for the core body of top fiber net under the effect of external force, significantly can reduce the thickness of disposable absorbent article, drastically increase the comfortableness of disposable absorbent article wearer.
Accompanying drawing explanation
Fig. 1 is the fibroreticulate schematic diagram of levels of the present invention, and wherein label 1 is top fiber net, and label 2 is lowermost fibre net.
Fig. 2 is that upper and lower fiber web welds with wide continuous striped in the left and right sides, and carry out narrower continuous striped welding in the centre of the left and right sides, wherein dash area is ultrasonic bonding striped;
Fig. 3 is that upper and lower fiber web welds with wide continuous striped in the left and right sides, in rear and front end with the interruption striped welding that the width of fringe of the left and right sides is narrow, the interruption striped welding all narrower than both widths of fringe is carried out at other position, and wherein dash area is ultrasonic bonding striped.
Detailed description of the invention
Embodiment 1
A kind of disposable absorbent article, comprises surface material and waterproof and breathable compound absorbing material from top to bottom.
Surface material is hot-wind nonwoven cloth, and Gram Mass is 20gsm, buys from southern six companies, and its material is ES short fiber (cortex is polyethylene, and sandwich layer is polypropylene), and specification is 2D × 38mm, adopts hot blast reinforcement process to make.
Waterproof and breathable compound absorbing material is worked materials, is made up of upper and lower two layer web.Its preparation method is as follows: step 1, by the wood pulp fibre of the super water-absorbent staple fibre of 72wt%, 8wt%, the ES thermoplastic fibre of 20wt% through dispersion, mix after, reinforce make top fiber net through combing, lapping, hot air technique, its Gram Mass is 80gsm; Step 2, using the conventional SMS fiber web as lowermost fibre net, adopt fluorochemical repellent water to refuse fluid composition finishing agent NUVA1542LIQ to arrange the fibroreticulate one side of SMS, wherein this conventional SMS fiber web is buied from Shandong Jun Fu company, spun-bonded/melt-blown/spunbond process is adopted to make, material is polypropylene, and SMS fiber web Gram Mass is 40g.The lowermost fibre net that step 3, the top fiber net made through step 1 and step 2 are made unreels respectively by unreeling structure, weld through ultrasonic welding institution, wherein ultrasonic bonding is crossed by the side of the uncoated water and oil repellant composition finishing agent of lowermost fibre net and top fiber Netcom, makes waterproof and breathable compound absorbing material.
Surface material, waterproof and breathable compound absorbing material are bondd by hot melt adhesive Henkel5811u (commercial), resin application methods is spiral glue spraying.
Embodiment 2
A kind of disposable absorbent article, comprises surface material and waterproof and breathable compound absorbing material from top to bottom.
Surface material is hot-wind nonwoven cloth, and Gram Mass is 20gsm, buys from southern six companies, and its material is ES short fiber (cortex is polyethylene, and sandwich layer is polypropylene), and specification is 2D × 38mm, adopts hot blast reinforcement process to make.
Waterproof and breathable compound absorbing material is worked materials, is made up of upper and lower two layer web.Its preparation method is as follows: step 1, by the wood pulp fibre of the super water-absorbent staple fibre of 72wt%, 8wt%, the ES thermoplastic fibre of 20wt% through dispersion, mix after, reinforce make top fiber net through combing, lapping, hot air technique, its Gram Mass is 70gsm; Step 2, using the conventional SMS fiber web as lowermost fibre net, water and oil repellant composition finishing agent NUVA1542LIQ is adopted to arrange the fibroreticulate one side of SMS, wherein this conventional SMS fiber web is buied from Shandong Jun Fu company, spun-bonded/melt-blown/spunbond process is adopted to make, material is polypropylene, and SMS fiber web Gram Mass is 80gsm.The lowermost fibre net that step 3, the top fiber net made through step 1 and step 2 are made unreels respectively by unreeling structure, weld through ultrasonic welding institution, wherein ultrasonic bonding is crossed by the side of the uncoated water and oil repellant composition finishing agent of lowermost fibre net and top fiber Netcom, makes waterproof and breathable compound absorbing material.
Surface material, waterproof and breathable compound absorbing material are bondd by hot melt adhesive Fuller1088, resin application methods is spiral glue spraying.
Embodiment 3
A kind of disposable absorbent article, comprises surface material and waterproof and breathable compound absorbing material from top to bottom.
Surface material is hot-wind nonwoven cloth, and Gram Mass is 20gsm, buys from southern six companies, and its material is ES short fiber (cortex is polyethylene, and sandwich layer is polypropylene), and specification is 2D × 38mm, adopts hot blast reinforcement process to make.
Waterproof and breathable compound absorbing material is worked materials, is made up of upper and lower two layer web.Its preparation method is as follows: step 1, by the wood pulp fibre of the super water-absorbent staple fibre of 60wt%, 15wt%, the ES thermoplastic fibre of 25wt% through dispersion, mix after, reinforce make top fiber net through combing, lapping, hot air technique, its Gram Mass is 60gsm; Step 2, using the conventional SMS fiber web as lowermost fibre net, water and oil repellant composition finishing agent NUVA1542LIQ is adopted to arrange the fibroreticulate one side of SMS, wherein this conventional SMS fiber web is buied from Shandong Jun Fu company, spun-bonded/melt-blown/spunbond process is adopted to make, material is polypropylene, and SMS fiber web Gram Mass is 80gsm.The lowermost fibre net that step 3, the top fiber net made through step 1 and step 2 are made unreels respectively by unreeling structure, weld through ultrasonic welding institution, wherein ultrasonic bonding is crossed by the side of the uncoated water and oil repellant composition finishing agent of lowermost fibre net and top fiber Netcom, makes waterproof and breathable compound absorbing material.
Surface material, waterproof and breathable compound absorbing material are bondd by hot melt adhesive Bostik4660, resin application methods is spiral glue spraying.
Embodiment 4
One once can disposable absorbent article, comprises surface material and waterproof and breathable compound absorbing material from top to bottom.
Surface material is hot-wind nonwoven cloth, and Gram Mass is 20gsm, buys from southern six companies, and its material is ES short fiber (cortex is polyethylene, and sandwich layer is polypropylene), and specification is 2D × 38mm, adopts hot blast reinforcement process to make.
Waterproof and breathable compound absorbing material is worked materials, is made up of upper and lower two layer web.Its preparation method is as follows: step 1, by the wood pulp fibre of the super water-absorbent staple fibre of 50wt%, 10wt%, the ES thermoplastic fibre of 40wt% through dispersion, mix after, reinforce make lowermost fibre net through combing, lapping, hot air technique, its Gram Mass is 70gsm; Step 2, using the conventional SMS fiber web as lowermost fibre net, water and oil repellant composition finishing agent NUVA1542LIQ is adopted to arrange the fibroreticulate one side of SMS, wherein this conventional SMS fiber web is buied from Shandong Jun Fu company, spun-bonded/melt-blown/spunbond process is adopted to make, material is polypropylene, and SMS fiber web Gram Mass is 80gsm.The lowermost fibre net that step 3, the top fiber net made through step 1 and step 2 are made unreels respectively by unreeling structure, weld through ultrasonic welding institution, wherein ultrasonic bonding is crossed by the side of the uncoated water and oil repellant composition finishing agent of lowermost fibre net and top fiber Netcom, makes waterproof and breathable compound absorbing material.
Surface material, waterproof and breathable compound absorbing material are bondd by hot melt adhesive Henkel5811u, resin application methods is spiral glue spraying.
Comparative example 1
A kind of disposable absorbent article, comprises surface material and waterproof and breathable compound absorbing material from top to bottom.
Surface material is hot-wind nonwoven cloth, and Gram Mass is 20gsm, buys from southern six companies, and its material is ES short fiber (cortex is polyethylene, and sandwich layer is polypropylene), and specification is 2D × 38mm, adopts hot blast reinforcement process to make.
Waterproof and breathable compound absorbing material is worked materials, is made up of upper and lower two layer web.Its preparation method is as follows: step 1, by the super water-absorbent staple fibre of 50wt%, the ES thermoplastic fibre of 50wt% through dispersion, mix after, through combing, lapping, hot air technique reinforce make top fiber net, its Gram Mass is 60gsm; Step 2, the top fiber net made through step 1 and unreel respectively by unreeling structure as the conventional SMS fiber web of lowermost fibre net, weld through ultrasonic welding institution, make waterproof and breathable compound absorbing material, wherein this conventional SMS fiber web is buied from Shandong Jun Fu company, spun-bonded/melt-blown/spunbond process is adopted to make, material is polypropylene, and SMS fiber web Gram Mass is 40gsm.
Surface material, waterproof and breathable compound absorbing material are bondd by hot melt adhesive Henkel5811u, resin application methods is spiral glue spraying.
Comparative example 2
A kind of disposable absorbent article, comprises surface material and waterproof and breathable compound absorbing material from top to bottom.
Surface material is hot-wind nonwoven cloth, and Gram Mass is 20gsm, buys from southern six companies, and its material is ES short fiber (cortex is polyethylene, and sandwich layer is polypropylene), and specification is 2D × 38mm, adopts hot blast reinforcement process to make.
Waterproof and breathable compound absorbing material is worked materials, is made up of upper and lower two layer web.Its preparation method is as follows: step 1, by the wood pulp fibre of the super water-absorbent staple fibre of 40wt%, 30wt%, the ES thermoplastic fibre of 30wt% through dispersion, mix after, reinforce make lowermost fibre net through combing, lapping, hot air technique, its Gram Mass is 70gsm.Step 2, using the conventional SMS fiber web as lowermost fibre net, water and oil repellant composition finishing agent NUVA1542LIQ is adopted to arrange the fibroreticulate one side of SMS, wherein this conventional SMS fiber web is buied from Shandong Jun Fu company, spun-bonded/melt-blown/spunbond process is adopted to make, material is polypropylene, and SMS fiber web Gram Mass is 80gsm.The lowermost fibre net that step 3, the top fiber net made through step 1 and step 2 are made unreels respectively by unreeling structure, weld through ultrasonic welding institution, wherein ultrasonic bonding is crossed by the side of the uncoated water and oil repellant composition finishing agent of lowermost fibre net and top fiber Netcom, makes waterproof and breathable compound absorbing material.
Surface material, waterproof and breathable compound absorbing material are bondd by hot melt adhesive Fuller1088, resin application methods is spiral glue spraying.
According to embodiment 1-4 and comparative example 1-2, produce the sample 1 of disposable absorbent article, sample 2, sample 3, sample 4 and contrast sample 1, contrast sample 2, parameter is as shown in table 1:
Table 1
Remarks: the water in water absorbent rate as herein described, water conservation multiplying power is synthetic urine.
Hydrostatic pressure resistant method of testing: test sample is placed in the test area of 100 square centimeters, hydraulic pressure increases with constant speed 60mbar/min, until test sample resist the most weak place of hydraulic pressure have 3 to drip to appear test sample time, hydraulic pressure value is now the hydrostatic pressure resistant value of this sample.
Water absorbent rate method of testing: cut 3 samples, 100mm × 100mm.Sample is fixed on (with safety pin) on woven wire, then woven wire is put into bottom the liquid filled container that 20mm height liquid body is housed, and start to clock, after 60s, take out sample.Samples vertical hung, drip 120s.Weigh the weight of sample after dripping.LAC=(Mn-Mk)/Mk; Mk: weight during sample dry state; Mn: after test terminates, the weight during hygrometric state of sample; LAC: liquid absorption multiplying power.
Vapor transfer rate method of testing: by GB/T12704 " fabric moisture transmission quantity measuring method-moisture-inhibiting agar diffusion method ", method B tests.
Time of penetration method of testing: test by WSP70.3 " standardtestmethodfornon-wovencover-stockliquidstrike-th roughtimeusingsimulatedurine " method.
The method of testing of thickness: test by FZ/T60004 " mensuration of non-weaving cloth thickness " method.
Test result is as shown in table 2:
Table 2
Test result shows, disposable absorbent article provided by the invention, because the top fiber net in waterproof and breathable compound absorbing material adds wood pulp fibre, can fully, rapidly by absorbing fluid.Along with the decline of super water-absorbent staple fibre SAF ratio, its absorbency and water conservation multiplying power decline thereupon.Along with the rising of wood pulp fibre ratio, its thickness rises thereupon.In contrast sample 1, super water-absorbent staple fibre: thermoplastic fibre=75wt%:25wt%, not containing wood pulp fibre, its time of penetration is slower; In contrast sample 2, wood pulp fibre content 30%, although infiltration rate is very fast, its thickness obviously rises.
This waterproof and breathable compound absorbing material utilizes the conventional production process in this area and production equipment to produce, alternative traditional absorptive core and be applied to disposable absorbent article every liquid counterdie, meets to absorb and every liquid function.Although with reference to several preferred embodiments wherein to invention has been display and describing, but design concept of the present invention is not limited thereto, various change, deletion and increase can carried out to its form and details without departing from the spirit and scope of the present invention.But it should be noted that, some possible modification still fall in the protection domain of claim.
Claims (11)
1. a disposable absorbent article, comprises transparent liquid top layer and waterproof and breathable compound absorbing material from top to bottom, and this waterproof and breathable compound absorbing material is made up of upper and lower two layer web, it is characterized in that:
Top fiber net comprises super water-absorbent staple fibre and cellulose fibre;
Side away from the top fiber net coating water and oil repellant composition finishing agent of lowermost fibre net;
Upper and lower two layer web is by ultrasonic bonding, and wherein ultrasonic bonding is crossed by the side of the uncoated water and oil repellant composition finishing agent of lowermost fibre net and top fiber Netcom;
The water absorbent rate of this waterproof and breathable compound absorbing material is 10-40g/g, water conservation multiplying power is 5-20g/g, vapor transfer rate is 4000-7000g/m
2day, hydrostatic pressure resistant are 40-60mbar, and wherein water absorbent rate and the water described in water conservation multiplying power are synthetic urine; The peeling force of upper and lower two layer web is 3-5N/25mm.
2. disposable absorbent article according to claim 1, is characterized in that, the top fiber net of described waterproof and breathable compound absorbing material also comprises thermoplastic fibre, and its content is at least greater than 15wt%.
3. disposable absorbent article according to claim 2, is characterized in that described thermoplastic fibre is polyamide fiber.
4. disposable absorbent article according to claim 3, is characterized in that described thermoplastic fibre is polyethylene or polypropylene or the composition of the two.
5. disposable absorbent article according to claim 1, is characterized in that the cellulose fiber content that the top fiber net of described waterproof and breathable compound absorbing material comprises is 8wt%-15wt%.
6. disposable absorbent article according to claim 1, is characterized in that the super water-absorbent staple fibre comprised in the top fiber net of described waterproof and breathable compound absorbing material has thermoplasticity and crimpiness.
7. disposable absorbent article according to claim 1, is characterized in that the crimpness that the super water-absorbent staple fibre of described waterproof and breathable compound absorbing material has is 8-15%.
8. disposable absorbent article according to claim 1, it is characterized in that the lowermost fibre net of described waterproof and breathable compound absorbing material is the fused fiber net of spun-bond process or meltblown or above-mentioned two kinds of Combination of Methods formation, its Gram Mass is 40-80gsm.
9. disposable absorbent article according to claim 1, is characterized in that in the water and oil repellant composition finishing agent of the coating of the side away from top fiber net of the lowermost fibre net of described waterproof and breathable compound absorbing material containing carbon-fluorine (C-F) group.
10. waterproof and breathable compound absorbing material according to claim 1, is characterized in that the ultrasonic bonding pattern of the ultrasonic bonding that described upper and lower two layer web adopts is striated.
11. disposable absorbent articles according to claim 1, is characterized in that described disposable absorbent article is sanitary napkin, paper diaper or incontinence article.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511023597.2A CN105463704A (en) | 2015-12-31 | 2015-12-31 | Moisture absorbing article |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511023597.2A CN105463704A (en) | 2015-12-31 | 2015-12-31 | Moisture absorbing article |
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| CN105463704A true CN105463704A (en) | 2016-04-06 |
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| CN201511023597.2A Pending CN105463704A (en) | 2015-12-31 | 2015-12-31 | Moisture absorbing article |
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Application publication date: 20160406 |