CN101828991A - Disposable absorption product of magnetic closed system - Google Patents
Disposable absorption product of magnetic closed system Download PDFInfo
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- CN101828991A CN101828991A CN201010172807A CN201010172807A CN101828991A CN 101828991 A CN101828991 A CN 101828991A CN 201010172807 A CN201010172807 A CN 201010172807A CN 201010172807 A CN201010172807 A CN 201010172807A CN 101828991 A CN101828991 A CN 101828991A
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Abstract
The invention relates to a disposable absorption object, in particular to a disposable absorption product of a magnetic closed system, such as diapers, paper diapers and the like. The magnetic closed system comprises a front waist tape bonded on the back layer of a bottom slice as well as a left waist tape and a right waist tape as two opposite closed members bonded at the sides of the bottom slice. The front waist tape, the left waist tape and the right waist tape of the closed system are made of magnetic materials; and the closed system realizes the closure of the diapers through magnetic force between the magnetic materials. The closed system realizes the closure of the disposable absorption product through the magnetic force of the magnetic materials. The disposable absorption product makes up the technical defects that a gluing system can not be used for closing hooks for many times, a left adhesive tape and a right adhesive tape are easily stuck on the back layers of the diapers by mistakes to tear the bottom layers of the diapers, and a hook fastener and a ring fastener of a hook and ring system can become invalid or damage ambient materials due to compression and pollution and the like.
Description
Technical field:
The present invention relates to a kind of daily absorbent item, belong to the articles for daily use technical field, specifically, especially refer to a kind of disposable absorbent article.As diaper, diaper etc.
Background technology:
Along with growth in the living standard, people no longer content just to simply inhale the urine function to the demand of disposable adsorption object, and demand begins to present multifunction.Diaper also developed into for the 6th generation from the simple and crude first generation, as the left and right sides waist subsides of diaper closed-system and the appearance of frontal waist plaster, was the innovation of the revolution of diaper.Traditional closing device mainly contains adhesive system or hook and circle system.
Adhesive system mainly uses about release frontal waist plaster and adhesive tape type and pastes, and adhesive tape type left and right sides waist pastes by making the pressure sensitive adhesive goods at PP film coated adhesive.Release frontal waist plaster is a kind of photocuring of CPP thin film or the silicone oil separated type material of heat cure, can guarantee after frontal waist plaster is release to paste peeling force suitable when bonding with left and right sides waist and prevent that glue from shifting.Because adhesive tape is a kind of hot-fusible pressure-sensitive adhesive, polluted by external substance, such as water, greasy dirt, dust etc., all can cause its viscosity to descend, can't realize repeatedly closed; As if improper use, left and right sides adhesive tape mistake easily is attached to the bottom that diaper backsheet causes tearing diaper simultaneously, causes to occur leakage phenomenon in the end in the use.
Hook and circle system mainly use VELCRO and magic to buckle, and VELCRO is the composite of a kind of PP thin film and mesh grid, and net form has hoop net, knitmesh, non-knitmesh etc.; The magic button is a kind of little moulding of the head shapes of pestering, and relies on the mushroom head and the adhesion of mesh grid to realize the closure of diaper in the use of reality.Hook and circle fastener be invalid or perilesional material because compression and pollution can become.
In order to address these problems, the CN1658813 of 3M Innovative Properties Company patent disclosure a kind of closing device that is used for a large amount of uses of disposable: the improvement joint component that a kind of closed-system of being made up of a joint component and slot member is provided here.Slot member comprises a slit or a ring, and slit is between an inside part and an Outboard Sections.Joint component has one to have certain-length, an inward flange, an outward flange and have the joint component of a lip portion at least.The joint outward flange cooperates clamp device by the slit of slit part.In case by slit, the Outboard Sections crossover of joint component antelabium and slot member or hook will stop joint component to be threaded off from slot member at least.The Outboard Sections of slot member is retained in antelabium and intrinsic being generally between the softish tab carrier substrate.
The CN1759153 of 3M Innovative Properties Company patent disclosure a kind of closed-system that contains self-adhering adhesives, it comprises: at least two relative closure members that can overlap to form the viscosity closure in (for example, on the position that separates of article such as diaper); With the self-adhering adhesives compositions on each closure member; Wherein the self-adhering adhesives compositions comprises that 50wt% comprises nonpolar elastomeric viscous elastomer material to 90wt%; 10wt% is to the wax of 40wt%; 0 to the plasticizer less than 5wt%; Percentage ratio wherein is based on described viscous elastomer material and adds to wax and add the gross weight of optional plasticizer; And wherein one of following at least narration is correct: the self-adhering adhesives compositions has at least that the T of every centimetre 100 gram peels off; Or described wax has the molecular weight less than 1500.
The CN1649556 of P﹠G patent disclosure a kind of improved diaper closed-system: relate to diaper, especially baby diaper, described diaper is with a kind of state manufacturing of substantially flat and offer the user of this product, and is formed a three-dimensional clothes and remained on this position by a closed-system by the diaper user.Closed-system is made up of the banding pattern closed-system, and described banding pattern closed-system has an appointed area and is attached in this zone on diaper.Preferably, closed-system comprises a mechanical interlocked system, and this mechanical interlocked system also is referred to as hook and eye clamping system or Velcro closed-system.
Summary of the invention:
Purpose of the present invention aims to provide a kind of simple in structure, easily the disposable absorbent article of the magnetic closed system of processing.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of disposable absorbent article of magnetic closed system, it comprises the egative film of liquid permeable topsheet, the core body that can absorb moisture, liquid non-permeate and adheres to the frontal waist plaster of egative film and the closed-system of the left and right sides waist subsides composition that adheres to the egative film side; The frontal waist plaster of described closed-system is the magnetic composite of a kind of magnetic plastics or soft magnetic materials thin slice and non-woven fabrics, plastic sheeting, leather, textile cloth etc.; The left and right sides waist of described closed-system pastes the magnetic composite for a kind of hard magnetic material and non-woven fabrics, plastic sheeting, leather, textile cloth etc.The magnetic force that closed-system produces by magnetic material is realized the closure of disposable absorbent article; Described magnetic composite is bonded in it on disposable absorbent article by the mode that PUR adheres to.
Described hard magnetic material is meant a kind of Ferrite Material that magnetizes the difficult demagnetization in back and can keep magnetic for a long time, is also referred to as permanent magnet material or permanent magnetic material.The crystal structure of hard ferrite roughly is the hexaplanar Magnetoplumbate-type, and its typical case's representative is Barium hexaferrite BaFe
12O
19Current important permanent magnet material commonly used mainly contains: a) rare earth permanent-magnetic material, as NdFeB rear-earth alloy permanent magnet material; B) metal permanent magnet material, as aluminum nickel cobalt (AlNiCo) be with siderochrome cobalt (FeCrCo) be two big class permanent-magnet alloys; C) ferrite permanent-magnet materials is as Barium hexaferrite (BaFe
12O
19) and strontium ferrite (SrFe
12O
19) etc.; Also have micropowder permanent-magnetic material, nano permanent magnetic material, glue to mould permanent magnet material, workable permanent magnetic material etc. in addition.
Described soft magnetic materials is a kind of magnetic material with low-coercivity and high magnetic permeability, and soft magnetic materials is easy to magnetization, also is easy to demagnetization.Soft magnetic materials can respond the variation of external magnetic field rapidly, and can obtain high magnetic flux density in low-loss ground.The soft magnetic materials of using mainly contains now: alloy, as silicon steel (Fe-Si), permalloy (Fe-Ni), this special alloy (Fe-Si-Al) of celestial platform; Soft magnetic ferrite is as Mn-Zn system, Ni-Zn system, Mg-Zn system etc.; Also have amorphous soft magnetic alloy, nano-crystal soft magnetic alloy, super-microcrystalline soft magnetic alloy in addition.
Described magnetic plastics is to be that binding agent mixes the magnet that bonding processing is made with Magnaglo with plastics or rubber, and its component is:
Nanoscale magnetic powder 40%～90%
Dispersant 0.5%～5%
Plastic pellet 5%～60%
Magnetic plastics mainly is made of resin and magnetic powder, and resin plays bonding effect, and magnetic powder is the source of magnetic.The magnetic powder that is used to fill mainly is ferromagnetic oxide powder and rare earth permanent magnet powder.Thin magnetic film can be divided into two big classes again according to magnetic characteristic: a class is that the direction of easy axis of magnetic particle is disorderly and unsystematic arrangement, is called the isotropism magnetic plastics, and performance is lower, usually by Barium hexaferrite as magnetic material.Another kind of is in the course of processing by externally-applied magnetic field or mechanical force, make the direction of easy axis sequence arrangement of magnetic powder, be called the anisotropic magnetic plastics, using more is the iron strontium oxide magnetic plastics.
The major advantage of magnetic plastics is: density is little, impact strength is big, can cut, cut, hole, processing such as welding, lamination and embossing, can be not chipping during use, it can adopt the general processing method of general plastic sheeting (extrude, calendering, curtain coating etc.) to process.Can be processed into the goods of dimensional accuracy height, thin-walled, complicated shape, plastic band inserts goods, miniaturization, lightweight, precise treatment and the high performance of realization electromagnetic equipment.
Described nanoscale magnetic powder is a kind of Barium hexaferrite, strontium ferrite, siderochrome cobalt magnetic material, NdFeB rear-earth alloy material, preferred Sr-ferrite magnetic material.The crystalline structure of strontium ferrite magnetic powder is the hexagonal crystal formation, has advantages such as magnetic characteristic is stable, coercivity is high, resistivity is high, density is little, inexpensive.The key factor of the particle size effect magnetic composite performance of nanoscale magnetic powder, its particulate big or small 0.5～100nm is preferably 5～30nm, its coercivity 2000～8000A/m.The nanoscale granularity of magnet powder distributes and shape of particle all has material impact for filling rate, processing characteristics and the degree of orientation.Magnetic powder particle size distribution scope is suitable, will help improving the packed density of material, helps magnetic powder and is evenly distributed in resin, thereby improve magnetic property.Described chemical coprecipitation is a kind of preparation technology of magnetic crystal, when referring to that a kind of precipitation is separated out from solution, causes the phenomenon of some solable matter coprecipitation.
Described magnetic plastics preparation technology is: the nanoscale magnetic powder after the dispersant surface treatment with the plastic pellet blend, extrude through double screw extruder, technologies such as curtain coating, blowing, calendering make magnetic plastics.
In the polymer magnetic composite material forming of produced in conventional processes, because the loading of magnetic powder is very high, the frictional resistance of magnetic powder and polymer is very big, mobile poor, is unfavorable for that magnetic powder particle is orientated along easy axis.In order to improve this situation, people often add processing aid and improve the flowability of magnetic powder in polymer fluid, improve the degree of orientation of magnetic powder.
Processing aid commonly used has plasticizer, lubricant, stabilizing agent and surface conditioning agent etc.Wherein surface conditioning agent is the most important, and this is that resin belongs to lipophilicity substance because magnetic powder belongs to hydroaropic substance, so the affinity between them is very poor.In addition, air that adsorbs in the micropore on magnetic powder surface and moisture also hinder the infiltration to magnetic powder of resin and auxiliary agent, are difficult to be uniformly dispersed after making magnetic powder and resin compounded, therefore influence the flowability and the processing and forming of complex melt.Therefore, palpus is controlled the magnetic powder water content and the magnetic powder surface is handled.Usually add the coupling agent that has hydrophilic group and lipophilic group concurrently.Carboxylic acid and carboxylic acids: stearic acid, calcium stearate (barium, strontium, magnesium, aluminum, zinc), olein, olein acid calcium (barium, strontium, magnesium, aluminum, zinc) etc.Sulfuric acid ester and its esters, phosphoric acid fat and its esters.Make magnetic powder surface adsorption one deck coupling agent thin film, be covered in the magnetic powder particle surface by coupling agent and form oleophilic layer, thereby improve the affinity of magnetic powder and interlaminar resin, the two compatibility is improved, make magnetic powder and resin ask that mutually dispersion is more even, flowability also improves simultaneously, thereby can successfully carry out processing and forming.These dispersants are pressed 0.5～5% of magnetic powder weight ratio and are added, and can reduce the cohesion of magnetic powder effectively.Utilize this technology can produce Br=0.44T (4400G), Hcj=318～335kA/m (4000～4200Oe), the degree of orientation reaches 98% high-performance permanent-magnet ferrite.
Polymer mainly plays binding agent in the polymer-matrix magnetic composite, it bonds magnetic powder and various auxiliary agent and gives the processability and the mechanical property of necessity.Although most polymers all can be used to prepare the polymer-matrix magnetic composite, but in order to obtain the good goods of processing characteristics and mechanical performance, be necessary polymer is selected and modification, selected polymer is answered requirements such as the As soon as possible Promising Policy melt viscosity is low, mechanical strength is high, Heat stability is good.
Various resins have certain influence to magnetic property, and the resin that is suitable for magnetic plastics has polypropylene, nylon etc.
Described magnetic composite is formed by processes such as sewing, binding agent are bonding by magnetic material and non-woven fabrics, plastic film and other material.
Described closed-system is realized the closure of disposable absorbent article by the magnetic force of magnetic material.Repeatedly closing hook, left and right sides adhesive tape are attached to the bottom that diaper backsheet causes tearing diaper easily by mistake to have remedied adhesive system; Hook and circle system since hook and circle fastener be compressed and pollute the technological deficiencies such as invalid or perilesional material that can become.
Description of drawings:
Accompanying drawing 1 is the front view of the present invention's product
Accompanying drawing 2 is the cutaway view of the present invention's product
The specific embodiment:
See accompanying drawing 1～2:
Embodiment 1:
(1) preparation of magnetic plastics thin film
The component of magnetic plastics thin film is:
Strontium ferrite nanoscale magnetic powder 60%
Strontium bis(stearate) 0.5%
Phosphoric acid fat 1.0%
LLDPE 30％
m-LLDPE 10％
With strontium ferrite nanoscale magnetic powder, Strontium bis(stearate), LLDPE, m-LLDPE, phosphoric acid fat uniform mixing in proportion, extrude, cast technologies such as sheet, stretching, corona, traction (side cut), rolling and make thin magnetic film through material oven dry, twin screw.
(2) preparation of magnetic frontal waist plaster
The magnetic frontal waist plaster is a three-decker: BOPP thin film-magnetic plastics thin film-BOPP thin film
The BOPP thin film makes the magnetic frontal waist plaster through technologies such as corona, gluing, applyings.Described BOPP thin film is a kind of very important flexible packing material, the BOPP thin film is colourless, do not have smell, tasteless, nontoxic, and have high tensile, impact strength, rigidity, obdurability and the good transparency.Its thickness is 15～25um.
(3) preparation of magnetic left and right sides waist subsides:
Magnetic left and right sides waist pastes and is three-decker: non-woven fabrics-hard magnetic material-non-woven fabrics
Described hard magnetic material is a ndfeb magnetic material, and neodymium iron boron is that magnetic force is the strongest in all Magnet.According to each components in proportions difference in the prescription, magnetic force can improve, can reduce, N35-N52 is arranged, N35M-N50M, N30H-N48H, N30SH-N45SH, N28UH-N35UH, N28EH-N35EH performance indications, conventional strong magnetic magnetic force is the N35 performance (high temperature resistant 80 degree) in the N35-N52 trade mark, with require can the strong magnetic of other high performance neodymium iron borons customized.
Described non-woven fabrics is the spun-bond process non-woven fabrics, is to be extruded, to stretch at polymer and after forming continuous filament yarn, long filament is laid to net, and fibre web passes through that self is bonding again, heat bonding, chemical adhesion or mechanical consolidation method, makes fibre web become non-woven fabrics.Its grammes per square metre is 30～60gsm.
Hard magnetic material and non-woven fabrics make magnetic left and right sides waist and paste by applying glue, technology such as compound.
(4) have the preparation of the diaper of magnetic closed system:
With the magnetic frontal waist plaster by sided corona treatment, coated heat melten gel, cut, adsorb, shift technology such as bonding magnetic frontal waist plaster (3) is bonded to egative film (1) backing layer.With the left and right waist of magnetic paste (2) through the coated heat melten gel, cut, shift technology such as bonding and magnetic left and right sides waist is pasted be bonded to egative film (1) flank.
(5) magnetic closed system performance test
The bonding force of frontal waist plaster (3) and egative film (1) backing layer: 10N/25mm
What left and right waist pasted (2) and egative film (1) flank holds viscous force: 20min/25mm
Left and right waist pastes the T type peeling force of (2) and frontal waist plaster (3): 4N/25mm
Embodiment 2:
(1) preparation of magnetic frontal waist plaster
The magnetic frontal waist plaster is a three-decker: non-woven fabrics-iron plate-non-woven fabrics; Iron plate and non-woven fabrics make the magnetic frontal waist plaster by applying glue, technology such as compound.Described non-woven fabrics is the spun-bond process non-woven fabrics, and its grammes per square metre is 30～60gsm.
(2) preparation of the left and right waist subsides of magnetic:
The left and right waist of magnetic pastes and is three-decker: non-woven fabrics-hard magnetic material-non-woven fabrics; Hard magnetic material and non-woven fabrics make magnetic left and right sides waist and paste by applying glue, technology such as compound.Described hard magnetic material is Barium hexaferrite BaFe
12O
19Magnetic material; Described non-woven fabrics is the spun-bond process non-woven fabrics, and its grammes per square metre is 30～60gsm.
(3) have the preparation of the diaper of magnetic closed system:
With the magnetic frontal waist plaster by sided corona treatment, coated heat melten gel, cut, adsorb, shift technology such as bonding magnetic frontal waist plaster (3) is bonded to egative film (1) backing layer.With the left and right waist of magnetic paste (2) through the coated heat melten gel, cut, shift technology such as bonding and the left and right waist of magnetic is pasted (2) be bonded to egative film (1) flank.
(4) magnetic closed system performance test
The bonding force of frontal waist plaster (3) and egative film (1) backing layer: 5N/25mm
What left and right waist pasted (2) and egative film (1) flank holds viscous force: 20min/25mm
Left and right waist pastes the T type peeling force of (2) and frontal waist plaster (3): 6N/25mm
Certainly, the above technical scheme is a preferred embodiments of the present invention, be not to limit the scope of the present invention,, be included in the present patent application claim so all equivalences of doing according to the described structure of the present patent application claim, feature and principle change or modify.
Claims (10)
1. the disposable absorbent article of a magnetic closed system, described absorbent article comprises:
A) liquid permeable topsheet;
B) be provided with the core body that can absorb moisture to small part;
C) be adhered to the egative film (1) of the liquid non-permeate on the top flat to small part;
D) frontal waist plaster (3) that adheres to egative film (1) to small part with adhere to small part
The left and right waist of egative film (1) side pastes the closed-system that (2) are formed; With it is characterized in that: the magnetic force of described closed-system by magnetic material is realized the closure of disposable product.
2. the disposable absorbent article of a kind of magnetic closed system as claimed in claim 1 is characterized in that: the material that the described frontal waist plaster (3) that adheres to egative film (1) is composited for a kind of magnetic plastics or soft magnetic materials thin slice and non-woven fabrics, plastic sheeting.
3. the disposable absorbent article of a kind of magnetic closed system as claimed in claim 1 is characterized in that the described left and right waist that adheres to egative film (1) side pastes (2), the material that is composited for a kind of hard magnetic material and non-woven fabrics, plastic sheeting etc.
4. the disposable absorbent article of a kind of magnetic closed system as claimed in claim 2 is characterized in that described soft magnetic materials is that pure iron and mild steel, ferrum Si system alloy, ferrum aluminum series alloy, ferrum Si system alloy, ferronickel are that alloy, ferrum cobalt are alloy, soft magnetic ferrite, amorphous soft magnetic alloy, super-microcrystalline soft magnetic alloy etc.
5. the disposable absorbent article of a kind of magnetic closed system as claimed in claim 3 is characterized in that described hard magnetic material is: Barium hexaferrite BaFe
12O
19, permanent-magnet rare-earth NdFeB alloy, aluminum nickel cobalt (AlNiCo) be that permanent-magnet alloy, siderochrome cobalt (FeCrCo) they are permanent-magnet alloy etc.
6. a magnetic plastics is characterized in that, comprises following components by part by weight:
Nanoscale magnetic powder 40%～90%
Dispersant 0.5%～5%
Plastic pellet 5%～60%
7. the preparation method of a magnetic plastics is characterized in that: the nanoscale magnetic powder after the dispersant surface treatment with the plastic pellet blend, extrude through double screw extruder, technologies such as curtain coating, blowing, calendering make thin magnetic film or thin slice.
8. the material that is composited such as material/a kind of hard magnetic material that is composited as claim 2 and 3 described a kind of magnetic plasticses or soft magnetic materials thin slice and non-woven fabrics, plastic sheeting and non-woven fabrics, plastic sheeting is characterized in that: magnetic material and non-woven fabrics, plastic film and other material form by processes such as sewing, binding agent are bonding.
9. the disposable absorbent article of a kind of magnetic closed system as claimed in claim 1 is characterized in that: described frontal waist plaster (3) pastes (2) adhesion every centimetre 100 gram T peeling force at least with left and right sides waist.
10. the disposable absorbent article of a kind of magnetic closed system as claimed in claim 1, it is characterized in that the described left and right sides waist that adheres to egative film (1) side paste (2) combine with egative film (1) side effect at least every centimetre of 5min hold and glue retention time, every centimetre of 10N pull-off force at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010172807A CN101828991A (en) | 2010-04-30 | 2010-04-30 | Disposable absorption product of magnetic closed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010172807A CN101828991A (en) | 2010-04-30 | 2010-04-30 | Disposable absorption product of magnetic closed system |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103272916A Division CN102820120A (en) | 2010-04-30 | 2010-04-30 | Magnetic plastic for disposable absorption product magnetic closed system and preparation method thereof |
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|---|---|
| CN101828991A true CN101828991A (en) | 2010-09-15 |
Family
ID=42713315
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010172807A Pending CN101828991A (en) | 2010-04-30 | 2010-04-30 | Disposable absorption product of magnetic closed system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106479390A (en) * | 2015-08-28 | 2017-03-08 | 陈林 | VELCRO protective case and preparation method thereof |
| CN106479391A (en) * | 2015-08-28 | 2017-03-08 | 陈林 | VELCRO, VELCRO workpiece and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330893A (en) * | 2005-12-16 | 2008-12-24 | 宝洁公司 | Force focused fastening member |
| CN201179134Y (en) * | 2007-07-26 | 2009-01-14 | 何志红 | Convenient diaper for baby |
| CN201710558U (en) * | 2010-04-30 | 2011-01-19 | 广东百顺纸品有限公司 | Absorption product of magnetic closing device |
-
2010
- 2010-04-30 CN CN201010172807A patent/CN101828991A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330893A (en) * | 2005-12-16 | 2008-12-24 | 宝洁公司 | Force focused fastening member |
| CN201179134Y (en) * | 2007-07-26 | 2009-01-14 | 何志红 | Convenient diaper for baby |
| CN201710558U (en) * | 2010-04-30 | 2011-01-19 | 广东百顺纸品有限公司 | Absorption product of magnetic closing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106479390A (en) * | 2015-08-28 | 2017-03-08 | 陈林 | VELCRO protective case and preparation method thereof |
| CN106479391A (en) * | 2015-08-28 | 2017-03-08 | 陈林 | VELCRO, VELCRO workpiece and preparation method thereof |
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Application publication date: 20100915 |