CN201361291Y - Completely-biodegradable diaper facing material - Google Patents
Completely-biodegradable diaper facing material Download PDFInfo
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- CN201361291Y CN201361291Y CNU2009200671208U CN200920067120U CN201361291Y CN 201361291 Y CN201361291 Y CN 201361291Y CN U2009200671208 U CNU2009200671208 U CN U2009200671208U CN 200920067120 U CN200920067120 U CN 200920067120U CN 201361291 Y CN201361291 Y CN 201361291Y
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Abstract
The utility model provides a completely-biodegradable diaper facing material, which is integrated by an upper-layer fiber mesh and a lower-layer fiber mesh, wherein the pores of the upper-layer fiber mesh are larger and the pores of the lower-layer fiber mesh are smaller, so that the shape of the pores formed in the thickness direction of the diaper is tapered to form a tapered gradient structure. The upper-layer fiber mesh is a polylactic acid bi-component fiber mesh, and the lower-layer fiber mesh is a kapok fiber mesh. The linear density of the polylactic acid bi-component fibers of the upper-layer fiber mesh ranges from 2.2 dtex to 6.6 dtex, and the length ranges from 38 mm to 65 mm. The length of the kapok fibers of the lower-layer fiber mesh ranges from 16 mm to 30 mm, and the average linear density ranges from to 0.9 dtex to 1.2 dtex. Besides the gradient structure with tapered pores, the diaper facing material has soft, skin-like and comfortable feel, good moisture-transmitting and moisture-permeable properties, no back seepage of moisture and good antibacterial effect. Additionally, the diaper facing material is biodegraded completely and belongs to an environment-friendly product.
Description
Technical field
This utility model relates to a kind of diaper surface material of fully biodegradable.
Background technology
Diaper is at first to be succeeded in developing by the U.S. at the fifties, and comes into the market to sell in the sixties.Because diaper is easy to use, water absorption is big, thereby its scope of application constantly expanding, enlarging, and present diaper has been not only baby's special product, also is used widely at health system and some special industries.But in huge consumption is " white " rubbish that can't dispose behind, because diaper just discards after urine absorption is saturated, and the material of its use mostly can't biodegradation, after discarded environment is caused very big pollution, according to statistics, the average per minute of the U.S. has about 3.8 ten thousand exhausted diaper to be dropped, and rubbish things such as annual discarded diaper just reach 2,700,000 tons.In Britain, nearly 3,000,000,000 of the diaper that abandons every year, 90% diaper has all entered refuse landfill, and meanwhile, alternative refuse landfill is fewer and feweri, and processing cost is increasing.In China, statistics showed in 2005, and the consumption of diaper has reached 47.1 hundred million then, and with annual 25% speed increment, diaper has become the third-largest rubbish source that is only second to newspaper and food and drink packing at present.Therefore change existing diaper material therefor, make it abandon be buried in underground after, can produce degraded through the regular hour, thereby reduce pollution environment, be very important.
Present medium-sized diaper is mainly formed by three layers, by top layer to the sequence arrangement of bottom is: top layer, absorbent core layer and backing layer.Top layer material therefor normally bi-component synthetic fiber hot-wind nonwoven cloth, polypropylene thermal mangles or spun-bonded non-woven fabrics, diaper is had relatively high expectations to skin-material, because it directly contacts baby's skin, therefore need material softness, chafe not, the urine rapid osmotic is gone down, when storage reached capacity, urine was also wanted and can not be bled back in addition, thus the dry and comfortable property and the ventilative comfortableness that keep pasting the skin face; Absorbent core layer adds the super resin that absorbs by Time of Fluff Slurry and forms, and is used for storing in a large number liquid; Backing layer mainly is the PP breathable films, mainly prevents oozing out of urine, plays isolated effect.
This shows, it is the material of raw material that top layer and backsheet are with the oil, being embedded in underground 100 years can not degrade yet, existing in addition skin-material constitutes by single fiber, and is consistent along the pore-size size of thickness direction, reaches capacity if store urine, when surpassing the sandwich layer absorbability, urine also is easy to bleed back, and stains the tender skin of baby, so this utility model patent is carried out at the skin-material of diaper.
To the diaper surfacing, China utility model patent CN201106090 discloses a kind of silk fiber spun-laced nonwoven fabric, many evenly distributed apertures are arranged on the silk fiber spun-laced nonwoven fabric, adjacent two rounds are staggered, the hole is oval, and the size in hole is 0.4 * 0.9 millimeter, and this material is to the human body advantageous particularly, be Green Product, can make the overlay of sanitary towel, diaper, sanitary pad, child's diaper, urine trousers, adult diaper, urine pad.But silkworm silk is the good fiber of a kind of water absorption, after being soaked, will keep hygrometric state by urine always, can not be penetrated into urine in the absorbent core layer fully, long-term contact human body skin has discomfort, particularly the skin that the baby is tender contacts the hygrometric state diaper for a long time, be easy to generate diaper rash, do not satisfy the diaper skin-material and will have the urine of making rapid osmotic and go down, keep in touch the requirement of the dry and comfortable function of skin surface.
Chinese invention patent CN101112339 discloses a kind of sanitary towel with the bombax cotton preparation, protective pad, diaper, the trousers pad, all kinds of human medical protection pads, the component of employed fibrous raw material and quality percentage composition are bombax cotton 5-100%, other fiber 0-95%, described other fiber is a chemical fibre, synthetic fibers, animal and plant fiber, staple fibre, in the inorfil one or more or whole, in embodiment, adopted multiple fiber especially, as bombax cotton 40%, spandex 10%, cotton 10%, Pilus Caprae seu Ovis 5%, silkworm silk 5%, fiber crops 10%, soybean fiber 10%, milk fibre 5%, jade fiber 5% mixes, reaching 9 kinds of fiber mixing has not only increased the difficulty of production and processing, product cost is increased, also sneak into spandex and the jade fiber that to degrade on the other hand, do not reached the purpose that material is degraded fully.
Acid fiber by polylactic is a kind of novel ecological, environmental protective fiber type, it is raw material with the corn starch, by fermentation, series reaction such as condensation, polymerization is made, polylactic acid article after discarded is carbon dioxide and water through the microbial action degradable in soil or sea water, subsequently under photosynthesis of plant, they can become the initiation material of starch again, are a kind of fibers of good fully biodegradable.
Acid fiber by polylactic melting range very wide (120-170 degree centigrade), and have good hot adhesion performance, make it become one of optimum selection of bicomponent fibers.Acid fiber by polylactic poisture-penetrability, water diffusibility excellence, absorbing sweat is quick-drying, and biocidal property is preferably arranged; It stretches characteristic by force and polyester fiber is more or less the same [intensity (4.5～5.5) g/d, degree of stretching (25～40) %], makes it be convenient to weaving processing.Acid fiber by polylactic is since eighties of last century the fifties begins industrialization, and along with production-scale continuous expansion, cost also further descends, and present price is between polyester and Fypro.China goes up many for the weaving that is applied in of polylactic acid at present, pure spinning and natural or synthetic fibers blending with other arranged, aspect non-woven fabrics, also have spunbond, melt and spray the appearance with water thorn fiber poly-lactic acid products, but specifically also do not see using aspect the diaper material.
Bombax cotton is a fruit fiber, its vertical smooth surface, the cross section is circular or oval, hollowness of fibre is up to 80%～90%, fiber finer and lack (length 8～34mm, fineness is 0.9～3.2dtex), ultimate fibre density only is 0.29g/cm3, being 1/2 of cotton fiber, is the thinnest in the world present natural superfine fiber.The kapok surface have more cured matter make fiber smooth, do not absorb water, so fiber is light and warming, mainly as various oakum material and buoyant material.
Summary of the invention
The purpose of this utility model provides a kind of diaper surface material of fully biodegradable, the not only soft skin that pastes, lead wet, poisture-penetrability good, be difficult for bleeding back, and have better fungistatic effect, to remedy the deficiencies in the prior art, can not form for the second time and pollute, belong to the environmental type product.
For achieving the above object, the technical solution of the utility model is,
A kind of diaper surface material of fully biodegradable, it is integrated by the levels fibre web and forms, and the hole of upper strata fibre web is big, and the hole of lower floor's fibre web is little, and making the pore shape that forms along its thickness direction is taper, forms up big and down small gradient-structure.
Further, described upper strata fibre web is the polylactic acid bi-component fibrous reticulum, and lower floor's fibre web is the bombax cotton net.
The line density of the polylactic acid bicomponent fibre of described upper strata fibre web is 2.2～6.6dtex, and length is 38～65mm.
The length of the bombax cotton of described lower floor fibre web is 16～30mm, average linear density 0.9～1.2dtex.
This utility model utilizes the lower fusing point of skin-core structure polylactic acid bicomponent fibre, by hot rolled method acid fiber by polylactic net and bombax cotton net is united two into one.Because surface material is different fibrous by two kinds, the pore shape that forms along thickness direction is taper, has formed the up big and down small gradient-structure of hole;
Described polylactic acid bicomponent fibre mainly plays the bonding and reinforcement effect in material, its unfused sandwich layer also has skeleton and supporting role simultaneously, in addition, because the acid fiber by polylactic hygroscopicity is lower, it is moist good to lead, and helps the urine rapid osmotic to be siphoned away by absorbent core layer by the diaper surface material.
For textile material if having well wet thoroughly, lead moist, usually require fiber to have high specific surface area, utilize the capillary tube wicking (to refer to the aqueous water in fiber and the fabric capillary tube, though there is not the potential energy difference of external force field, because the additional gravitational effect of liquid gas interface can the automatic mobile phenomenon of guiding liquids in the capillary tube) principle, make fiber suction fast, water delivery, diffusion and infiltration can absorb skin surface urine and dampness rapidly, and be penetrated into the intermediate absorption layer.Therefore, this capillary channel between fiber and the fiber is many more, and the wicking of capillary is good more, then material lead wet, poisture-penetrability is also good more.And one of main way that increases number of capillaries is to adopt superfine fibre or doughnut, thus to the use of high degree of hollowness bombax cotton improved more material wet thoroughly, lead moist.
Advantage of the present utility model
This utility model is taper along the pore shape that thickness direction forms, pasting the skin face is the acid fiber by polylactic net, the diameter of hole is bigger, with the sandwich layer contact surface be the bombax cotton net, pore diameter is less, form a kind of up big and down small taper gradient-structure that is similar to, this structure has ensured that on the one hand the smooth and easy of urine flows down, (top hole is big to stop urine to produce the possibility of reverse osmosis on the other hand, following hole is little), can satisfy fully the diaper surface material desired lead wet, poisture-penetrability is good, and wet dissipation is fast, be difficult for bleeding back, keep in touch baby's one surface skin dry and comfortable purpose.
This utility model upper strata fibre web consists of the polylactic acid bicomponent fibre, lower floor's fibre web consists of bombax cotton, made full use of more capillary canal number and the excellent capillary water absorption effect of acid fiber by polylactic itself of kapok superfine fibre, in the surface material of making, pore-size in the acid fiber by polylactic net is greater than the pore-size in the bombax cotton net, has so just realized above-mentioned purpose.
In addition, fine because acid fiber by polylactic surface pH value is faintly acid 6.0～6.5 with the human body skin compatibility, and certain antibacterial action is arranged; Bombax cotton also has good fungistatic effect (bacteriostasis rate is 90.1%), bombax cotton and acid fiber by polylactic are being processed in the process of diaper surface material, only used physical mechanical method, do not use any chemical drugs, thereby final material still kept two kinds of fiber self better anti-bacterial effect, and the selecting for use of this natural antibacterial material is when providing liquid absorbing net face for the tender skin of baby, return the baby good care is provided, make it avoid the infringement of diaper rash.
Description of drawings
Fig. 1 is the structural representation of this utility model one embodiment.
The specific embodiment
Referring to Fig. 1, the diaper surface material of fully biodegradable of the present utility model, it is integrated by upper and lower layer fibre web 1,2 and forms, hole of fibre web 1 is big at the middle and upper levels for it, the hole of lower floor's fibre web 2 is little, making the pore shape that forms along its thickness direction is taper, forms up big and down small gradient-structure.
Described upper strata fibre web 1 is the polylactic acid bi-component fibrous reticulum, and lower floor's fibre web 2 is the bombax cotton net; The line density of the polylactic acid bi-component fibrous reticulum of described upper strata fibre web 1 is 2.2dtex, and length is 38mm; The length of the bombax cotton of described lower floor fibre web 2 is 16mm, average linear density 0.9～1.2dtex.
The material that this utility model is made, except that can be used as the diaper surface material, can also be as the surface material of women sanitary articles and adult-incontinence articles.
Claims (4)
1. the diaper surface material of a fully biodegradable is characterized in that, it is integrated by the levels fibre web and forms, the hole of upper strata fibre web is big, the hole of lower floor's fibre web is little, and making the pore shape that forms along its thickness direction is taper, forms up big and down small gradient-structure.
2. the diaper surface material of fully biodegradable as claimed in claim 1 is characterized in that, described upper strata fibre web is the polylactic acid bi-component fibrous reticulum, and lower floor's fibre web is the bombax cotton net.
3. the diaper surface material of fully biodegradable as claimed in claim 2 is characterized in that, the line density of the polylactic acid bicomponent fibre of described upper strata fibre web is 2.2～6.6dtex, and length is 38～65mm, belongs to skin-core structure.
4. the diaper surface material of fully biodegradable as claimed in claim 2 is characterized in that, the length of the bombax cotton of described lower floor fibre web is 16～30mm, average linear density 0.9～1.2dtex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200671208U CN201361291Y (en) | 2009-01-19 | 2009-01-19 | Completely-biodegradable diaper facing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200671208U CN201361291Y (en) | 2009-01-19 | 2009-01-19 | Completely-biodegradable diaper facing material |
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| CN201361291Y true CN201361291Y (en) | 2009-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200671208U Expired - Fee Related CN201361291Y (en) | 2009-01-19 | 2009-01-19 | Completely-biodegradable diaper facing material |
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| CN (1) | CN201361291Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851878A (en) * | 2012-09-24 | 2013-01-02 | 淄博奈琦尔纺织科技发展有限公司 | Alginate fiber absorbable medical auxiliary material and manufacture technology thereof |
| CN103031667A (en) * | 2012-12-27 | 2013-04-10 | 杭州可靠护理用品股份有限公司 | Fully degradable non-woven material and application thereof to incontinence nursing pads for adults |
| CN106333793A (en) * | 2016-09-23 | 2017-01-18 | 潘儒愿 | Sanitary napkin |
| CN107083033A (en) * | 2017-06-09 | 2017-08-22 | 怡佳（福建）卫生用品有限公司 | Biodegradable ventilated membrane for paper diaper and preparation method thereof |
| CN110284261A (en) * | 2019-07-10 | 2019-09-27 | 武汉纺织大学 | A kind of preparation method of reverse osmosis compound nonwoven cloth |
| CN110507843A (en) * | 2019-09-17 | 2019-11-29 | 东华大学 | A kind of preparation method of degradable functional dressing |
| CN112622374A (en) * | 2020-12-18 | 2021-04-09 | 苏州谷原生物科技有限公司 | Polylactic acid nanofiber non-woven fabric surface layer and degradable sanitary towel prepared from same |
| CN113151977A (en) * | 2021-02-01 | 2021-07-23 | 南通大学 | Super-soft anti-reverse-seepage kapok diaper material and preparation method thereof |
-
2009
- 2009-01-19 CN CNU2009200671208U patent/CN201361291Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851878A (en) * | 2012-09-24 | 2013-01-02 | 淄博奈琦尔纺织科技发展有限公司 | Alginate fiber absorbable medical auxiliary material and manufacture technology thereof |
| CN103031667A (en) * | 2012-12-27 | 2013-04-10 | 杭州可靠护理用品股份有限公司 | Fully degradable non-woven material and application thereof to incontinence nursing pads for adults |
| CN103031667B (en) * | 2012-12-27 | 2015-04-15 | 杭州可靠护理用品股份有限公司 | Fully degradable non-woven material and application thereof to incontinence nursing pads for adults |
| CN106333793A (en) * | 2016-09-23 | 2017-01-18 | 潘儒愿 | Sanitary napkin |
| CN106333793B (en) * | 2016-09-23 | 2020-06-09 | 潘儒愿 | Sanitary napkin |
| CN107083033A (en) * | 2017-06-09 | 2017-08-22 | 怡佳（福建）卫生用品有限公司 | Biodegradable ventilated membrane for paper diaper and preparation method thereof |
| CN110284261A (en) * | 2019-07-10 | 2019-09-27 | 武汉纺织大学 | A kind of preparation method of reverse osmosis compound nonwoven cloth |
| CN110284261B (en) * | 2019-07-10 | 2022-02-22 | 武汉纺织大学 | Preparation method of reverse osmosis composite non-woven fabric |
| CN110507843A (en) * | 2019-09-17 | 2019-11-29 | 东华大学 | A kind of preparation method of degradable functional dressing |
| CN112622374A (en) * | 2020-12-18 | 2021-04-09 | 苏州谷原生物科技有限公司 | Polylactic acid nanofiber non-woven fabric surface layer and degradable sanitary towel prepared from same |
| CN112622374B (en) * | 2020-12-18 | 2022-09-06 | 苏州谷原生物科技有限公司 | Polylactic acid nanofiber non-woven fabric surface layer and degradable sanitary towel prepared from same |
| CN113151977A (en) * | 2021-02-01 | 2021-07-23 | 南通大学 | Super-soft anti-reverse-seepage kapok diaper material and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20110119 |