CN103349592B - A kind of diaper of good water absorption - Google Patents
A kind of diaper of good water absorption Download PDFInfo
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- CN103349592B CN103349592B CN201310315560.1A CN201310315560A CN103349592B CN 103349592 B CN103349592 B CN 103349592B CN 201310315560 A CN201310315560 A CN 201310315560A CN 103349592 B CN103349592 B CN 103349592B
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Abstract
The application relates to a kind of diaper of good water absorption, comprises surface coating layer, absorbent core layer and bottom lining, the biological cellulose micro powder containing drying and dehydrating in described absorbent core layer.It has good water absorption, long-time use ventilative, without sense of discomfort, and use the features such as biodegradable, environmental protection afterwards.
Description
Technical field
The application relates to a kind of hygienic article, especially relates to the diaper product of a kind of infant or adult's use.
Background technology
Diaper is liked because the characteristic such as its single use, light and handy convenience makes it be used by increasing consumer.It is generally made up of surface coating layer, absorbent core layer and bottom lining, surface coating layer many employings non-woven fabrics or imitative cotton nonwoven fabrics, base fabric is PE film or breathability PE film, absorbent core layer is mix by absorbent materials such as wood pulp, Time of Fluff Slurry, paper pulp or by the absorbent materials such as wood pulp, Time of Fluff Slurry, paper pulp and hydroscopic high-molecular resin mostly, it will reach good water absorbing properties needs to arrange thicker size, greatly affects breathability and the comfort level of product.And absorbent core layer can the easy group of connecing after absorption of liquid, occurs absorbing tomography, thus affects the timely absorption of urine, affect its service time.Even if adopt the absorbent materials such as wood pulp, Time of Fluff Slurry, paper pulp and hydroscopic high-molecular resin mixing, also because hydroscopic high-molecular resin is difficult to fix with paper pulp etc., cause its skewness, affect its water absorption.Even if all use macromolecule resin as absorbent core layer, also there is following defect:
1, cost is higher;
2, macromolecule resin class absorbent material ubiquity has the shortcoming of saline-alkaline tolerance difference.Namely it is inhaled distilled water and can reach 1-2 thousand times, but its absorption normal saline only has tens times.Absorbability for urine is not fine.So adopt its diaper product as absorbent material still to have can not to absorb water for a long time, use for a long time, and the defect such as breathability is bad.
Biology cellulose (Biocellulose), the Bacterial cellulose that is otherwise known as (Bacterial cellulose, BC), it is by the microorganism of acetic acid Pseudomonas, as the cellulose products that the fermentations such as acetobacter xylinum are made.At present mainly with garbage, if Sucus Cocois, pineapple peel juice etc. are as raw material, therefore it is with low cost.Contain the moisture up to more than 95% in the product obtained, be therefore otherwise known as biological cellulose gel.The preparation method of biological cellulose gel is known in the art, disclosed in all having in CN101671708, CN1840677A, CN101319242A.Biology cellulose without association products such as lignin, pectin and hemicelluloses, has high-crystallinity (can reach 95%, plant cellulose be 65%) and the high degree of polymerization (DP value 2 000 ~ 8 000) compared with plant cellulose; It has hyperfine network structure, and biological fiber cellulose fiber is combined into the thick fibre bundle of 40 ~ 60 nanometers by the fento of diameter 3 ~ 4 nanometer, and is intertwined to form flourishing hyperfine network structure; Its elastic modelling quantity is more than the several times to ten times of general Plant fiber, and tensile strength is high; Biological fiber have very strong moisture holding capacity, has higher biocompatibility, adaptability and good biodegradability simultaneously.
Summary of the invention
For above-mentioned defect, the invention provides a kind of diaper of good water absorption, it has good water absorption, long-time use ventilative, without sense of discomfort, and use the features such as biodegradable, environmental protection afterwards.
The diaper of good water absorption provided by the invention, comprises surface coating layer, absorbent core layer and bottom lining, the biological cellulose micro powder containing drying and dehydrating in described absorbent core layer.Find through experiment, the biological cellulose micro powder obtained after drying and dehydrating has superpower water absorbing capacity, and it can absorb volume is at short notice its liquid of more than 10 times.Especially it should be noted that water absorbing capacity mentioned here is special in urine, instead of said for distilled water.Experimentally find, biological cellulose micro powder is for being rich in organic principle, containing salts substances, weakly acidic liquid still has good water absorption, it can not be subject to the macromolecular substances in liquid component, the interference of acidic materials, to molecule wherein, there is good adsorption by the hyperfine network structure of himself, the hydrogen bond that its internal structure contains in a large number simultaneously also can by ion micromolecule, the compositions such as water firmly adsorb, two combine, the biological cellulose micro powder after dewatering is made still to have higher water absorption for the urine being rich in organic substance and acidic materials.So some use the diaper product of macromolecule resin material to diaper product provided by the invention relatively, possesses better water absorbing properties.Its good biocompatibility simultaneously, lock aqueous is strong, good permeability, and long-time use can not cause sense of discomfort, sweltering sense etc., and adopts micronized form due to it, it evenly can be fixed in absorbent core layer, even if long-time twisting also can not affect its soaking effect.When the surface coating layer of described diaper product and bottom lining all adopt the material of environment-friendly degradable, described diaper product can natural biology degraded in natural environment, can not produce garbage.
Diaper of the present invention, described surface coating layer is to make the material of transflective liquid, and described bottom lining is can not make the material of transflective liquid completely.Described bottom lining is identical with the size of surface coating layer, matches with the profile of diaper, is substantially to extend on rear side of health on front side of the health of user, and the length of rear side is longer than the length of front side, and the width of rear side is more backward wider.
The size of described absorbent core layer can be identical with bottom lining size with described surface coating layer, also can be slightly less than described surface coating layer and bottom lining.
The side relative with absorbent core layer of described bottom lining has alite paste, described diaper can be sticked on the medicated clothing of user.
Diaper of the present invention, described biological cellulose micro powder is that the granular biological cellulose gel that the membranaceous biological cellulose gel that obtains of static fermentation or dynamic fermentation obtain is obtained after cutting, drying and dehydrating.Obtain after the biological cellulose gel preferably obtained fermenting carries out cold drying to constant weight at 20-60 DEG C.Described cold drying is preferably vacuum lyophilization.
Diaper of the present invention, preferably before the drying, first makes biological cellulose gel remove portion of water by mechanical compress.Follow-up cold drying can be carried out better, and its fine network structures can not be destroyed.
Diaper of the present invention, described biological cellulose micro powder is before carrying out drying, preferably through purification and washing, purification and washing can use methods known in the art, as conventional with week-base water or weak acid and deionized water cyclic washing, in order to get rid of the impurity substances likely existed in culture medium.
Described biological cellulose gel can use methods known in the art to prepare, and strain can use the various strains that can produce biological cellulose gel, preferably uses gluconate pyracetobacillus or acetobacter xylinum.Tray static fermentation method can be used also can to use dynamic fermentation method production biological cellulose gel.The membranaceous gel that described biological cellulose gel can obtain for static fermentation or the granulated gel that dynamic fermentation obtains.The culture medium used and fermentation condition not special requirement, can make microbial growth, and produce biological cellulose gel.Preferred fermentation temperature is 28-32 DEG C, fermentation 5-10 days.
In order to reach better soaking effect, the absorbent core layer of diaper of the present invention can also comprise other absorbent materials further, as as described in absorbent core layer comprise cladding and inner core, described inner core comprises the biological cellulose micro powder of drying and dehydrating, also comprises hydroscopic high-molecular resin or active carbon.
Described hydroscopic high-molecular resin is preferably starch conversion water-absorbing resin or acrylic acid series water-absorbing resin.It is added by suitable, better can improve the water absorption of absorbent core layer.
Described active carbon is preferably cocoanut active charcoal or active fruit shell carbon, can improve the water absorption of described diaper further, all right malabsorption abnormal smells from the patient, keeps abnormal smells from the patient pure and fresh.
In use, be coated in cladding after hydroscopic high-molecular resin or active carbon being mixed with the biological cellulose micro powder after drying and dehydrating.The mixed proportion of described hydroscopic high-molecular resin or active carbon is preferably 1%-8%, is especially preferably 5%.Its addition is not easily too much, can affect the absorbance of biological cellulose micro powder to organic macromolecule when too much.
Preferred, the present invention also provides a kind of good water absorption and has the diaper product of skin care effect, and it, except having the effect of absorption urine, also has certain health-care effect, can protect the skin of user infant or adult in use.
Use at night because diaper mostly is infant; service time is usually longer, reaches 8-10 hour, even the longer time; so whether it can absorb urine completely; keep dry tack free, be the key property weighing product, the skin of infant is tender and lovely simultaneously; be vulnerable to damage; so the present invention further provides a kind of diaper product with certain skin care effect, it at use slow releasing skin care ingredient simultaneously, can be protected the skin of user.
Good water absorption provided by the invention and have the diaper of skin care effect is in the biological cellulose micro powder of described absorbent core layer, containing following skin care ingredient:
Glycerol, natural Vitamin E, Aloe juice, Bulbus Lilii extract, Flos Lonicerae extract, camomile extract, Sucus Luffae.Raw material all commercially.
Its preparation process is:
1) get Bulbus Lilii 2 weight portion, Flos Lonicerae 2 weight portion, Flos Matricariae chamomillae 2 weight portion, add 2 times of volume water, heating decocts 1-2 hour, filters and obtains decocting liquid; Glycerol 3 weight portion, natural Vitamin E 0.5 weight portion, Aloe juice 2 weight portion, Sucus Luffae 1 weight portion is added, mixing and stirring in decocting liquid;
2) by after biological cellulose gel partial dehydration, in the decocting liquid it obtained in step 1), 3-6 hour is soaked;
3) after taking-up drains, then obtain biological cellulose micro powder after cutting, drying and dehydrating, make absorbent core layer after coated, then make diaper together with surface coating layer, bottom lining.
The membranaceous gel that described biological cellulose gel can obtain for static fermentation or the granulated gel that dynamic fermentation obtains.The pH value of described biological cellulose gel is about 7.
The pharmaceutical compositions with skin care effect incorporates in biological cellulose micro powder by the present invention, makes the absorbent core layer of diaper, in use; absorbent core layer not only can absorb urine; all right slow releasing skin care drug composition, the skin of protection user, has air permeable humidity retaining effect.
Detailed description of the invention
Below in conjunction with embodiment, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Embodiment 1:
By static fermentation legal system for biological cellulose gel film: use Sucus Cocois culture medium, inoculation gluconate pyracetobacillus, inoculum concentration 8%, after at 28 DEG C, tray static fermentation cultivates 5 days, biological cellulose gel film on results culture medium liquid level, with weak acid and deionized water cyclic washing to pH4, remove remaining medium composition and microbial cells that biological cellulose gel film adheres to.Then adopt machine cuts method that biological cellulose gel film is cut into bulk, 50 DEG C of cold drying are to constant weight, and grinds, is coated in non-woven fabrics, makes absorbent core layer.
Adopt natural fiber or synthetic fibers to be surface coating layer again, low-density polyethylene film is bottom lining, makes diaper according to known technique.
Embodiment 2:
By dynamic fermentation legal system for biological cellulose gel: use the artificial preparation culture medium containing carbon source, nitrogenous source, inoculation gluconate pyracetobacillus, inoculum concentration 10%, after at 30 DEG C, shaking table dynamic fermentation cultivates 7 days, results biological cellulose gel bead, with weak lye and deionized water cyclic washing to pH6, remove remaining medium composition and microbial cells that biological cellulose gel is adhered to.Mechanical compress makes its water content be down to 70%, then makes its drying be constant weight by vacuum lyophilization, grinds.By itself and 5%(percentage by weight) acrylic acid series water-absorbing resin mix, be coated in non-woven fabrics, make absorbent core layer.
Adopt natural fiber or synthetic fibers to be surface coating layer again, low-density polyethylene film is bottom lining, makes diaper according to known technique.
Embodiment 3:
By dynamic fermentation legal system for biological cellulose gel: use the artificial preparation culture medium containing carbon source, nitrogenous source, inoculation gluconate pyracetobacillus, inoculum concentration 10%, after at 30 DEG C, shaking table dynamic fermentation cultivates 7 days, results biological cellulose gel bead, with weak lye and deionized water cyclic washing to pH6, remove remaining medium composition and microbial cells that biological cellulose gel is adhered to.Mechanical compress makes its water content be down to 60%, then makes its drying be constant weight by vacuum lyophilization, grinds.By itself and 3%(percentage by weight) cocoanut active charcoal mix, be coated in non-woven fabrics, make absorbent core layer.
Adopt natural fiber or synthetic fibers to be surface coating layer again, low-density polyethylene film is bottom lining, makes diaper according to known technique.
Embodiment 4:
Get Bulbus Lilii 2 weight portion, Flos Lonicerae 2 weight portion, Flos Matricariae chamomillae 2 weight portion, add 2 times of volume water, heating decocts 1-2 hour, filters and obtains decocting liquid; Glycerol 3 weight portion, natural Vitamin E 0.5 weight portion, Aloe juice 2 weight portion, Sucus Luffae 1 weight portion is added, mixing and stirring in decocting liquid;
Biological cellulose gel film obtained in Example 1 again, with weak acid liquid and deionized water cyclic washing to pH 7, first its water content is made to be down to 60% by mechanical compress, then it is soaked 5 hours in decocting liquid, after taking-up drains, then through vacuum lyophilization to constant weight, grinds, be coated in non-woven fabrics, make absorbent core layer.
Adopt natural fiber or synthetic fibers to be surface coating layer again, low-density polyethylene film is bottom lining, makes diaper according to known technique.
Embodiment 5:
Get Bulbus Lilii 2 weight portion, Flos Lonicerae 2 weight portion, Flos Matricariae chamomillae 2 weight portion, add 2 times of volume water, heating decocts 1-2 hour, filters and obtains decocting liquid; Glycerol 3 weight portion, natural Vitamin E 0.5 weight portion, Aloe juice 2 weight portion, Sucus Luffae 1 weight portion is added, mixing and stirring in decocting liquid;
Biological cellulose gel bead obtained in Example 2 again, with alkali liquor and deionized water cyclic washing to pH 7, first its water content is made to be down to 50% by mechanical compress, then it is soaked 5 hours in decocting liquid, after taking-up drains, then through vacuum lyophilization to constant weight, grinds, be coated in non-woven fabrics, make absorbent core layer.
Adopt natural fiber or synthetic fibers to be surface coating layer again, low-density polyethylene film is bottom lining, makes diaper according to known technique.
Test example:
In order to check the water absorption of diaper of the present invention, the present invention has carried out water absorption under pressure test to the diaper in embodiment, and process of the test and result are distinguished as follows:
Water absorption under pressure is tested
Under the pressure condition of 2kPa, topple over the liquid of 100ml above the surface coating layer of the diaper of embodiment, test it and absorb the required time (unit is second) completely, result is as follows:
The soak time of different liquids kind | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1(commercially available diaper product brand first, randomly draws) | Comparative example 2(commercially available diaper product brand second, randomly draws) |
Distilled water | 5s | 5s | 5s | 5s | 5s | 10s | 10s |
Normal saline | 8s | 8s | 8s | 8s | 8s | 20s | 20s |
Containing the normal saline of 1g/100ml carbamide | 12s | 12s | 12s | 13s | 13s | 22s | 22s |
As can be seen from the above tests, diaper product of the present invention, owing to employing biological cellulose micro powder, has better water absorption.Especially for the liquid containing salts substances and acidic materials, its assimilation effect is better.Simultaneously due to the multifrequency nature of biology cellulose itself, described diaper product is also had, and breathability is good, good biocompatibility, the multiple advantage such as biodegradable.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. good water absorption and have the preparation method of the diaper of skin care effect, is characterized in that: described diaper comprises surface coating layer, absorbent core layer and bottom lining, and its preparation method is as follows:
1) get Bulbus Lilii 2 weight portion, Flos Lonicerae 2 weight portion, Flos Matricariae chamomillae 2 weight portion, add 2 times of volume water, heating decocts 1-2 hour, filters and obtains decocting liquid; Glycerol 3 weight portion, natural Vitamin E 0.5 weight portion, Aloe juice 2 weight portion, Sucus Luffae 1 weight portion is added, mixing and stirring in decocting liquid;
2) by after biological cellulose gel partial dehydration, in the decocting liquid it obtained in step 1), 3-6 hour is soaked;
3) after taking-up drains, then obtain biological cellulose micro powder after cutting, drying and dehydrating, make absorbent core layer after coated, then make diaper together with surface coating layer, bottom lining.
2. the preparation method of diaper according to claim 1, is characterized in that: described biological cellulose gel is the granular biological cellulose gel that the membranaceous biological cellulose gel that obtains of static fermentation or dynamic fermentation obtain.
3. the preparation method of diaper according to claim 1 and 2, is characterized in that: described drying and dehydrating at 20-60 DEG C, carries out cold drying to constant weight.
4. the preparation method of diaper according to claim 3, is characterized in that: described cold drying is vacuum lyophilization.
5. the preparation method of diaper according to claim 1, is characterized in that: described absorbent core layer comprises cladding and inner core, and described inner core comprises the biological cellulose micro powder of drying and dehydrating.
6. the preparation method of diaper according to claim 5, is characterized in that: described inner core also comprises hydroscopic high-molecular resin or active carbon.
7. the preparation method of diaper according to claim 6, is characterized in that: described hydroscopic high-molecular resin is starch conversion water-absorbing resin or acrylic acid series water-absorbing resin.
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