CN85103254A - Trough of belt sanitary towel with dry cover - Google Patents
Trough of belt sanitary towel with dry cover Download PDFInfo
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- CN85103254A CN85103254A CN85103254.0A CN85103254A CN85103254A CN 85103254 A CN85103254 A CN 85103254A CN 85103254 A CN85103254 A CN 85103254A CN 85103254 A CN85103254 A CN 85103254A
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Abstract
The sanitary towel that provides is characterised in that cleaning and dry property that its covering has combine with the outflow and the transport properties of squeezing groove.Sanitary towel's another feature is that absorbent cores has a cannelure of compressing on fit at least.A kind of cover layer hydrophobic, porous human body effluent be layered on said fit and groove above, and said cover layer extends to groove and bonding with bottom land.
Description
The invention provides a kind of sanitary towel, its structure comprises the effluent distributing slot, and this groove is compressed on the absorption piece of sanitary towel; Be covered with cover layer at fit (the body facing side), when the human body effluent deposits in the above, can keep its cleaning and drying.Particularly, the SANITARY NAPKIN CONSTRUCTION that the present invention relates to.Can make full use of the distribution property of groove to effluent, and without detriment to cover layer cleaning and dry.
Sanitary towel all is the loose liner of combination or has absorbefacient fiber for many years, as paper pulp or cellulose, general density is uniform, be enclosed in the tectal the inside of permeable human body effluent, and pasting the effluent barrier layer of clothing face (the garment side, the germeut facing side) shop with impermeability.Though yet such sanitary towel more or less is unsatisfactory, people recognize that the uniform density liner can not make full use of the absorptive capacity of liner for a long time.And just think that it can not reuse, that is, it is saturated that liner does not also have, and the human body effluent gone with regard to draining to the outside of pasting the clothing face.
For fear of this problem, some suggestion has been proposed before this, wherein be typically the United States Patent (USP) 4,184,498 that on January 22nd, 1980, pierre Franco announced the most.Wherein disclose the liner that is provided have fine and close, extend axially, the groove of central configuration, this groove is compressed into fit, marginal portion density around liner is low, and central groove is used to dredge the effluent that becomes silted up in central authorities, therefore can utilize the absorbability of liner better.The liner of similar sanitary towel's trough of belt that nineteen eighty-three common transfer 530, the 320 series applications of United States Patent (USP) that propose of JIUYUE 8 days disclose, this liner middle body is to the marginal portion, and its density is asymptotic variation from low to high.The sample of density has further improved the conveying of effluent like this, thereby can bring into play the absorptive capacity of liner more fully.
Except the transportation problem to effluent, this technology also is related to the towel of making a living recently provides a tectal useful feature.After the alluvial of human body effluent, sanitary towel still can keep its cleaning and exsiccant outward appearance.Therefore, people select thin film, and it can not only permeate the human body effluent as the cover layer of sanitary towel or veneer, but also can not lubricated by effluent, and hydrophobicity is promptly arranged.This hydrophobicity surface lining keeps having many advantages on the relatively dry at it.In addition, since not lubricated, so be unlikely to pollute outer surface.Suggestion in this technology at present mostly is the application of hydrophobicity veneer aspect absorption human body effluent product.For example, United States Patent (USP) 3,695, No. 269; Propose for 4,041, No. 951 and 4,391, No. 869 with the veneer of hydrophobic nonwoven as sanitary towel.And No. 2,992,644, United States Patent (USP); That 3,814, No. 101 and 4,324, No. 246 propose to have is hole, that can see through the human body effluent, hydrophobic whole thin polymer film made surface lining.
An assignee reports files PPC-251 number, apply for the on the same day with it and common U.S. Patent application of transferring the possession of to a higher authorities for approval, useful especially veneer has been proposed, it is not only non-woven material in fact, can see through effluent, and after absorbing the human body effluent, can improve the cleaning and the degree of drying of its outward appearance greatly.This veneer is characterised in that and is mixed with 5-12%(weight) whole polyolefin film of titanium dioxide, and have hole that the human body effluent is therefrom passed through.The aperture area of hole accounts for the 1.3-35% of the human body effluent passage gross area.Two factors of described aperture area and content of titanium dioxide match, and just make after effluent flows through, and veneer is still dry.In addition, because dirty decorative pattern covers below and absorbs in the liner, so also can present outward appearance dry and cleaning.
Therefore people can see the solution that has proposed to improve effluent conveying in the liner, and have proposed to provide the tectal way with cleaning and dry outward appearance.But regrettably, it is found that when attempt adopts the way of suggestion to handle these two problems (be the conveying of effluent and keep clean and exsiccant outward appearance) that single when using liner, resulting result can not be satisfactory.Yet, when the cover layer of the Docket PPC-251 patent that adopts above-mentioned assignee to provide on the liner even without central groove, the exsiccant again character of good cleaning also can be arranged.Yet, when use has the cover layer of groove sanitary towel, although the most of fit face of cover layer is a cleaning and exsiccant, and also also like this to user.But the part of covering layer that is layered on the groove still remains with sub-fraction but that can measure, obvious visible human body effluent.Therefore, need provide a kind of such sanitary towel: existing cleaning of its cover layer and exsiccant character, the character that has the fluting liner to carry effluent again.
According to sanitary towel provided by the present invention, its structure is got the perfect advantage of its fluting liner, and the liner of especially this fluting also has the character of carrying effluent simultaneously.When adopting the hydrophobicity cover layer, just can obtain this tectal clean and dry good characteristic.
Sanitary towel provided by the present invention comprises that one has fit absorbent cores and a subsides clothing face, and fit is being pasted the person, is used to absorb the human body effluent, and pastes fit dorsad of clothing face, and the position that subsides clothing face normally faces toward the underwear jag of wearer has on.At least extrude a groove longitudinally on fit of absorbent cores, this groove has the wall and the end.The groove of this shape helps vertically carrying the human body effluent.Sanitary towel provided by the invention is furnished with hydrophobic, and it is layered on the cover layer of permeable human body effluent on fit of the absorbent cores that comprises squeezing groove.According to disclosed in this invention,, cover layer extended in the groove, and stick on the bottom land in order to give full play to the exsiccant again characteristic of the tectal cleaning of this hydrophobicity.Contrast technology of the present invention, according to disclosed content, if cover layer only is to cover floating to rest on the groove or pine disorderly at random is placed in the groove, be layered on cover layer zone on the groove and can reach and can find out and can quantitatively measure its wetness degree, this function and aesthetic on be unfavorable.
According to the structural material of cover layer and absorbent cores, cover layer can be adhered to bottom land effectively with several different methods.For example when cover layer adopted thermoplastic, just can adopt heat or hot pressing plus-pressure was that automatic heat bonding makes bonding success.In addition, useful binders bonds to bottom land with cover layer.Preferably still jointing material is promptly to produce bonding active material with relative low-temperature heat.
The shape of groove can have very big variation, although flute profile changes, requires sanitary towel still can embody and gives fixed advantage.Groove preferably should be along the longitudinal extension of absorbent cores, certainly this not necessarily strict maintenance linear of groove that should be understood to prolongation stretches, that is to say that groove can be arcual, sine-shaped or groove major part is other curve shape, and just extends along the longitudinal substantially.Can adopt more than one similar groove.
The hydrophobicity cover layer is polymer thin-film material preferably, and it can make effluent can see through effluent by means of the hole of top face.The cover layer of the relevant patent protection of common transfer that cover layer so, preferably above-mentioned assignee Doeket PPC-251 carried out in patent application the same day.
Simple declaration to accompanying drawing
Fig. 1 is the perspective view of the sanitary towel of the technology of the present invention, and has several sections to remove to show its internals;
Fig. 2 is with the drawing in side sectional elevation of Fig. 1 sanitary towel along straight line 2-2.
Fig. 2 a and Fig. 2 are similar, but the illustrated sanitary towel that does not adopt the technology of the present invention.
Fig. 3 is the profilograph of Fig. 1 sanitary towel along straight line 3-3.
Fig. 4 is the plane graph of fit of Fig. 1 sanitary towel.
Fig. 5 is another perspective view that utilizes the SANITARY NAPKIN CONSTRUCTION of the technology of the present invention.
Fig. 6 is the drawing in side sectional elevation of sanitary towel shown in Figure 5.
Detailed explanation of the present invention
Referring to Fig. 1, this is the perspective view of first sanitary napkin 10, and it has embodied the technology of the present invention. Fig. 2,3 and 4 illustrates respectively drawing in side sectional elevation, vertical section and the plane of sanitary napkin 10.
The liner 12 that sanitary napkin 10 is normally made by a plane absorbent core or absorbing material forms. These materials that consist of the sanitary napkin liner comprise the water wetted material that absorption is arranged that combination is loose, such as the cellulose fiber, i.e. and wood pulp, regeneration cellulose or cotton fiber. Used chemistry or physical method with these fiber modifications, and the fiber of liner can be and other natural or synthetic material combining form, such as hydrophilic foamed plastics and other hydrophilic polymer etc.
As Figure 1-3, liner 12 usefulness fabric wrappages 14 bag last layers, this wrappage holds together together product in manufacture process, and keeps the shape of final product. This face of subsides clothing face 17(that human body effluent non-permeable formation 18 is layered on liner 12 is user's health dorsad) and liner 12 at least part of ribs 19 on.
In a kind of preferred construction, the skin of the subsides clothing face of sanitary towel 10 is made of nonwoven fabric layer 12.This adhesive-bonded fabric skin can make sanitary towel attractive in appearance, and soft.
As Fig. 2-3 was accurately described, it was to use pressure-sensitive bonding strip 22 that the clothing face pastes in the sanitary towel that is provided, and sanitary towel can be bonded on the position of wearer underwear jag.Illustrated as this concrete sanitary towel, these bonding strips 22 are made up of three longitudinal extension bands.Bonding strip or band are protected with an anti-stick (release strip) 24, to avoid using preceding generation undesirable bonding.
Be pressed into being and having wall 5 and the extension slot at the end 73 in fit 15 of liner 12.3 of grooves see it all is that the length of groove 3 longitudinal extensions equals liner 12 effective lengths, is at least 1010% of liner 12 length, preferably is not less than 25% on the position of central authorities fit 15 of liner 12 from vertical and horizontal.Yet groove can not exceed the transverse ends of liner 12.As mentioned above, groove is to be used for carrying human body effluent on fit that deposits to sanitary towel 10, and effluent is infiltrated in the liner 12, therefore just more can utilize the absorbability of liner 12 on the bearing of trend of groove fully.As what Fig. 2 described in detail, the groove of describing with cross section generally is to be the U type, and obviously groove V-shaped or the W type also can both be satisfied the demand on cross section.The wide degree of groove and the degree of depth are not very strict, as long as the size of groove is enough finished fluidic conveying function, the width of this groove preferably is about 0.1-3 centimetre, about deeply 0.1-1.5 centimetre.
Being pressed on 12 fit 15 of the liners is hydrophobic, and the cover layer 16 of permeable human body effluent is the polyolefin film of monoblock preferably, and it has hole is for the human body effluent is passed through, and reaching and being retained in absorbent cores is in the liner 12.It is sophisticated that preparation now has the technology of voided films, and these technology comprise that at first imporous monoblock polyolefin film is made in requirement, afterwards with pin or other similar thing puncture pore-forming; The puncture that mold pressing continues; The weak zone of heating attenuation; Calendering or other make the film distortion of attenuation with perforate on selected zone selectively.
3,137, No. 746 United States Patent (USP) has been introduced a kind of useful especially method.This method introduction be to adopt calendering to stamp the thin polymer film of original pattern, web-shaped product is made in mold pressing just or thin film done the method for concavity stricture of vagina.
The polyolefin that surface lining of the present invention uses is to be selected from polyethylene, polypropylene or with the copolymer of high density polyethylene (HDPE).Also can use other polymer in order to improve desired character, for example, a kind of useful especially mixture comprises that minority contains the polymer of aryl, as impact-resistant polystyrene.This mixture is introduced by 4,135, No. 021 patent of the U.S., and as what discussed, wherein the basic ratio of the contained sweet smell of polymer is not more than 40%(weight), preferably be not more than 20%(weight), i.e. 5-20%(weight).
Speak of in 4,135, No. 021 patent of the aforementioned U.S., can contain inertia extinction material such as titanium dioxide in the material, its content is up to 5%, it is said in order to improve material appearance and separability.The content that description Of The Invention and the top Docket ppc-251 that has mentioned number unexamined patent application is like this introduced.Can find that such material is not suitable for being used for covering sanitary towel fully and absorbs the stain that occurs behind the human body effluent on the absorption region.In conjunction with aforementioned restriction to aperture area, such sanitary towel's surface lining should contain many titanium dioxide (perhaps with the material that similar delustring character is arranged).The addition of titanium dioxide must be greater than 5%(weight), but preferably to be lower than 12%(weight).Selected such addition upper limit is to surpass 12%(weight according to content) time, titanium dioxide can come out by segregation from the mixture of polymer in manufacture process.In the therefore too high addition practice is impracticable, and best addition is in 7-10%(weight) between.
As stating in the patent specification (PPC-251), in order to reach the desirable effect of covering, the high addition of titanium dioxide must match with aperture area institute limited field.Here said aperture area is meant the entire area of hole, shows with its proportional shared in fit the gross area, and the gross area is to measure according to the fit face that absorbs product.Very clear, there is not open region to bring up to the ability that veneer is covered stain to greatest extent fully.From needless to say, there is not open region just to equal to remove the passage that the human body effluent enters the sanitary towel uptake zone certainly yet.Therefore must provide certain aperture area.United States Patent (USP) 4,324 proposes that aperture area is minimum to should be 35% in No. 246, and preferably 55%, find that if use very big aperture area, veneer is covered effect and will be reduced greatly.If under the situation of filling TiO 2 not, the stain of then covering can be very clearly in sight by veneer.In addition, also find to carry effluent, there is no need to limit so big aperture area fully for satisfying by veneer.In order to make whole sanitary towel satisfy the requirement of carrying effluent, it is fully suitable that aperture area is about total fit area 15-35%.And when running into the very low situation of human body effluent flow velocity, such as little liner, or as under other situations such as sweat absorbing towel, the aperture area of sanitary towel is low to 1.3%, also is acceptable.
Above-mentioned cover layer has very big advantage with regard to its nonwetting property, and has covered the zone that following quilt stains.In fact, the cover layer on the product is mainly used in this kind purpose shown in Fig. 1-4.Yet when the human body effluent was bestowed on the cover layer, the cover layer part that people can find to be layered on above the groove 3 can show the undesirable moistening that not only can find out but also can measure.When cover layer is only wrapped a circle, or be placed on the top of this product and seal the marginal portion on barrier layer 20, to such an extent as to when sealing trough of belt liner 12, promptly moistening can occur.Similarly, if be placed on for cover layer on the liner of slotless, extrude groove then like this during situation on liner, it is lubricated groove zone cover layer also can to occur.Under latter event, when the cover layer on being attached to groove partly is pulled to the groove that to a certain degree enters formation, after removing pressure, be not convenient to break away from from bottom land if do not take effective measures the harder covering layer material of prevention.In this case, undesirable moistening meeting shows once more.
According to the technology that this paper provided, find that it is to be bonded to the sanitary towel of covering effectively that this problem can be got rid of a kind of its cover layer with following effective measures at the end.Finish this bonding though can in all sorts of ways, from practical viewpoint, some method is more better than other method.For example, can select a kind of polymer, make this material temperature distortion, softening and fuse with gasket material during application, and bond above it in the bottom of groove as tectal material.Therefore, cover layer is placed on the slotted liner, uses the formpiston (male member) of the heating that is applicable to stock size that cover layer is pressed in the groove, and cover bonding is arrived bottom land.In addition, cover layer can be placed on the liner of unslotted, on pad, extrude groove simultaneously with a similar formpiston, and with cover bonding on bottom land.As with above-mentioned polyethylene cover the time, this method (be called automatic hot sticky connection here, just do not add binding agent in addition) can be subjected to the influence of polythene material characteristic, and has the advantage that needn't add jointing material in addition.In addition on the one hand, when this method is used under high-temperature too, or interlude is oversize, might melt whole covering layer materials, perhaps destroys its integrity, perhaps be bonded on the processing unit (plant) and it must be cleaned, therefore must be carefully in addition control example as, when using polyethylene cover, the formpiston maximum temperature should be between 290-300, and be used for tectal interval, can not be above 0.4 second.
Other method is to adopt jointing material, emulsion binder for example, and it can be used for being bonded in the cover layer part on the groove.Cover layer is pressed in the groove, and after the adhesive, cover layer will adhere on the bottom land.For this purpose, can select multiple binding agent for use, mentioning problems of excessive heat above can be solved.The defective of this method is that binding agent must solidify, and usually gets on very well, and promptly disperse medium must vapor away from system.
For cover bonding is arrived bottom land, a preferable methods is to adopt so-called hot-melt adhesive.Hot-melt adhesive is deposited under the room temperature to be solid-state and cannot not to be sticking, but when being heated, is clamminess with regard to deliquescing.As remove thermal source, they are with regard to rapid cooling and curing and be the non-sticky state.Hot-melt adhesive has activable cohesive in the temperature range widely.The bonding active temperature of the preferential hot-melt adhesive that adopts must be below the fusing point of covering layer material among the present invention.At least lower by 2 than its fusing point, can be compared to low 4 at least of cover layer fusing points most.For example, concerning polyethylene cover, its fusing point is about 260 °F, and the hot-melt adhesive composition is preferably lower than 256 °F below 258 °F, just should have bonding activity as 255 °F.
It also is very important being chosen in the hot-melt adhesive that does not have viscosity under the very low temperature.Product of the present invention so just can store under higher temperature, particularly in the some months in summer.Therefore, hot-melt adhesive is preferably in 150 in about bonding activity that do not have below 140 time
Bonding activity does not have in the time of below °F.
Can obtain diversified commercial hot hot melt adhesive composition at present, and applicable to product of the present invention.This class binding agent that has successfully been utilized generally is poly-(ethylene ethylene acetate)/polyphenylacetylene combination, the mixture of random grafting hydrocarbon polymer and polyvinyl acetate/polystyrene hydro carbons block copolymer.
As Fig. 2 show that clearly cover layer 16 is to utilize hot melt adhesive thing 9 to adhere to the bottom of groove 7.Should recognize, though Fig. 2 explanation be with hot-melt adhesive as bonding medium, as adopt emulsion binder or thing with automatic hot adhesion as adhesive means, Fig. 2 sanitary towel sketch map seems to be the same basically.
Binding agent 9 can be a whole piece, just in time occupies the total length of whole groove 3, and binding agent 9 also can not be whole piece or the total length that only accounts for flute length, and binding agent 9 also can not be a whole piece or a part that only accounts for flute length.When every duration of groove uses 0.001 gram binding agent, can obtain good bond effect, though every pair of long binding agent that is no less than 0.0015 gram that preferably uses that is to say that the groove of 3 durations will be with 0.006 binding agent that restrains.Under any circumstance, the long binder dosage of every inch should be greater than 0.01 gram, and it is long to be preferably lower than 0.005 gram/inch.
When making sanitary towel, hot-melt adhesive can be added on the bottom land of molding.One of selective method is that this binding agent is added in the zone that liner (fabric wrappage) is gone up desire system groove, can covering be placed on the liner, by making groove and bonding cover layer with the formpiston of heating again.Another alternative method is that hot-melt adhesive is added on tectal that zone of desiring to be attached on the groove, and is bonding cover layer with the formpiston of heating.This formpiston also can be used for grooving.
Another embodies alternative sanitary towel 30 of the present invention, is illustrated in Fig. 5 and Fig. 6.Sanitary towel 30 has an absorbent cores, and promptly liner 32.Cover that to paste in sanitary towel on the clothing face be barrier layer 34, this barrier layer also covers vertical rib, and as shown in the figure, it may also cover fit an of part.With with the similar method of sanitary towel shown in Fig. 1-4, strip of glue (two) 36 also is equipped with in order to sanitary towel is bonded on the underwear in sanitary towel 30, prevents that with one stick is protected before said strip of glue is used.
The cover layer 40 that is provided covers on fit of sanitary towel, and pastes the clothing hand-deliver at its reverse side one and fold, so it is liner 32 and barrier layer 34 whole encasing.This layer film clean with regard to it and the described cover layer of dry property and Fig. 1-4 16 similar.
With with the aforementioned embodiment similar manner described in for example of the present invention, on liner 32, extrude groove 16, this groove has the wall 48 and the end 50.As scheme meticulous describing, be positively to be bonded in according to cover layer 40 of the present invention with binding agent 52 at the end 50 of groove 46.
Advantage for the following technology of explanation the present invention provides following embodiment now:
Example 1
The sanitary towel that preparation has Fig. 1-4 shape that is exemplified, structure and character.All sanitary towel's greatest lengths are about 25 centimetres, and minimum widith is about 5 centimetres, and maximum ga(u)ge is about 2 centimetres.Contain heavily about 9 grams of shirt pad of wood pulp hair, the groove of extrusion is positioned at the central authorities of liner veneer, and flute length 7.7.6 centimetre, wide 0.3 centimetre, dark 0.6 centimetre.Used covering layer material is netted polyethylene, as unexamined patent application assignee report to a higher authorities for approval describe in detail in files PPC-251 number.This tectal aperture area is 25%, 7.5%(weight) titanium dioxide mix in the polyethylene as opacifier (Opaciying agcut).
Form first sanitary towel's series, these sanitary towels are by pre-ferred embodiment of the present invention, by automatic hot adhesion method polyethylene cover are bonded on the bottom land.Second sanitary towel that series comprised attempts with hot adhesion method bonding, but not success.The result makes the sanitary towel just like general structure shown in Figure 22 a, and the drawn assembly of the assembly that identical numbering wherein arranged and Fig. 2 is identical.Should be pointed out that different shown in Fig. 2 a to be that cover layer 16 is not adhered on the bottom land with the technology of the present invention, but on the crossed slot.The 3rd the sanitary towel's series that provides, the hotmelt that is referred to as HM2152 with H, a B, Fuller company adheres to cover layer on the bottom land, and this binding agent contains general poly-(ethylene/vinyl acetate).This binding agent is put on the subsides liner face of cover layer 16 (pad facing side).And its length is basic identical with groove.So the amount of binding agent is about 0.006 gram.Below 210 °F, adopt the way of heating to influence adherent about by formpiston.The 4th sanitary towel's series of preparation used hot-melt adhesive, but cover layer is not bonding with bottom land, so sanitary towel still has the general structure of Fig. 2 a.
At last, the 5th sanitary towel's series of preparation, be in liner, do not have slotted.
Example 2
Each sanitary towel described in the example 1 is all experimentized, to be determined at the clean appearance bestowed behind effluent dry situation again.Employed effluent is a kind of its saliferous of menstrual phase liquid composition that substitutes and has the surface tension characteristics of menstrual fluid, and dyed similar color.Each sample all be fit towards on be placed on the glass plate.A foraminous poly (methyl methacrylate) plate is put its hole just in time on fit of the foraminous sample of sanitary towel center.The hole is an ellipse garden shape, and its major axis (to defend the towel longitudinal register) is 1 1/2 inch, and minor axis is 3/4 inch, thick 1/2 inch in village.The menstrual fluid succedaneum of getting 15 milliliters is added in the sanitary towel, makes the hole remain full of state, to all being passed through by the hole to 15 all milliliters of liquid.Take away plate afterwards, the cover layer in the perusal groove scope is determined the moistening situation of its outward appearance.The quantitative way of wetness degree is carefully to wipe the cover surface in the experimental tank scope with an artificial pompon that gives having weighed earlier (about 0.5 gram), and once more weighing to determine the artificial pompon institute absorption liquid scale of construction.Experimental data points out that as measuring with above-mentioned wiping examination method, when the liquids about having at least 0.017 to restrain existed, perusal can find out that just cover layer wets.If liquid is less again, be commonly considered as doing with macroscopic result.
Data below table 1 is listed are results that explanation does not have slotted sample series.
Table 1 is the sanitary towel of indent not
Sample sequence number cover layer appearance surfaces liquid (gram)
1 does 0
2 do 0
3 do 0.0006
4 do 0
5 do 0
6 do 0.004
Sample sequence number cover layer appearance surfaces liquid (gram)
7 do 0
8 do 0
9 do 0
10 do 0.006
11 do 0
12 do 0
13 do 0.004
14 do 0
15 do 0
16 do 0
17 do 0
18 do 0
19 do 0
20 do 0
That the column of title " cover layer outward appearance " writes down is macroscopic result, and that title " surface liquid " hurdle record is the result of above-mentioned wiping examination method.As from table 1 finding, the cover layer of slotless not only seems, and practical measurement is also done.Only on the sample of seldom counting, found liquid, but amount is few to ignoring.
Data declaration heat bonding with table 2 is invalid, sanitary towel then with Fig. 2 a in the result of the test of mutually similar sample series of graphic extension.
The not bonding tectal sanitary towel of table 2
Sample sequence number cover layer appearance surfaces liquid (gram)
1 does 0.0133
2 wet 0.030
3 do 0.010
Sample sequence number cover layer appearance surfaces liquid (gram)
4 wet 0.080
5 wet 0.028
6 wet 0.025
7 wet 0.020
8 wet 0.020
9 wet 0.025
10 wet 0.111
11 wet 0.010
12 do 0.012
13 wet 0.020
14 wet 0.027
15 do 0.012
16 wet 0.018
17 wet 0.017
18 wet 0.020
19 wet 0.068
20 wet 0.019
Opposite with the sanitary towel of table 1, once there is groove to exist, in most of the cases, the outward appearance of moistening is just showed in the cover layer zone, and can measure the actual amount of liquid.Though be the same clean and dry covering layer material of usefulness with indent sanitary towel not in fact, this opposite result is genuine.
3 the data declaration of tabulating down is adhered to (that is, heat bonding does not add binding agent) on the bottom land according to its cover layer as a result of the prepared sanitary towel of technology of the present invention series by automatic heat bonding.
Table 3 has the tectal sanitary towel of automatic heat bonding
Sample sequence number cover layer appearance surfaces fluid (gram)
1 does 0
2 do 0
3 do 0
4 do 0
5 do 0
6 do 0
7 do 0
8 do 0
9 do 0
10 do 0
11 do 0
12 do 0
13 do 0
14 do 0
15 do 0
16 do 0
17 do 0
18 do 0
19 do 0
20 do 0
As noted in Table 3, cover layer is heat-bonded on the bottom land, has solved the existing problem of table 2 sanitary towel.
It is bonding with hot-melt adhesive that table 4 exemplifies explanation, and sanitary towel's series that cover layer does not bond on the bottom land is yet made the resulting result of test.
The not bonding tectal sanitary towel of table 4
Sample sequence number cover layer appearance surfaces liquid (gram)
1 wet 0.308
2 wet 0.617
3 wet 0.802
4 do 0.008
5 do 0.005
6 do 0.010
7 wet 0.713
8 wet 0.240
9 do 0.008
10 do 0.014
11 do 0.015
12 wet 0.003
13 do 0.009
14 do 0.015
15 wet 0.709
16 do 0.011
17 do 0.003
18 do 0.005
19 wet 0.153
20 wet 0.310
As from table, being seen, cover layer is not bonded to bottom land, almost have 50% sample moistening occur, and nearly all sample all can be measured its amount of liquid.
Table 5 shows cover layer being bonded to the result of sanitary towel's series testing of sanitary towel's bottom land with hot-melt adhesive.
The table 5 bonding tectal sanitary towel of hot melt
Sample sequence number cover layer appearance surfaces liquid (gram)
1 does 0
2 do 0
3 do 0
4 do 0.005
5 do 0
6 do 0
7 do 0
8 do 0
9 do 0
10 do 0
11 do 0
12 do 0
13 do 0
14 do 0
15 do 0
16 do 0
17 do 0
18 do 0
19 do 0
20 do 0
According to present technique, this binding agent has solved the problem of table 4 sanitary towel moistening, each example sanitary towel's cover layer all show and do.Have only a sample detection to go out some liquid, however this this only reach a unsubstantiality degree basically.
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Claims (15)
1, a kind of sanitary towel, it is characterized in that comprising one and have fit and paste the absorbent cores of the elongation of clothing face, said absorbent cores has an extending longitudinally groove that is pressed in fit at least, this groove has the wall and the end, said sanitary towel has hydrophobic, can see through the cover layer of human body effluent, this layer covers on fit of the said absorbent cores that comprises its squeezing groove, and said cover layer reaches in the said groove and be bonding with said bottom land.
2, the sanitary towel of claim 1, its tectal being characterised in that contains thermoplastic, and bonding with automatic thermal bonding and said bottom land.
3, by the sanitary towel of claim 2, its tectal being characterised in that contains polythene material, and is bonded on the said bottom land by thermal bonding with the formpiston of maximum temperature scope in 290-300.
4, by the sanitary towel of claim 1, wherein said cover layer bonds on the said bottom land with binding agent.
5, by the sanitary towel of claim 4, said binding agent is a kind of emulsion binder.
6, by the sanitary towel of claim 4, said binding agent is a kind of hot-melt adhesive.
7, by the sanitary towel of claim 6, said hot-melt adhesive has bonding activity when temperature is lower than 2 of intrinsic fusing points of cover layer at least.
8, by the sanitary towel of claim 7, used hot-melt adhesive has bonding activity when temperature is lower than 4 of intrinsic fusing points of cover layer at least.
9, by the sanitary towel of claim 8, talkative cover layer contains polythene material, and said hot melt is that bonding activity is arranged when temperature is lower than 258 °F.
10, by the sanitary towel of claim 9, said hot melt is that bonding activity is arranged when temperature is lower than 256 °F.
11, by the sanitary towel of claim 4, said adhesive consumption is that every inch groove is at least 0.001 gram.
12, by the sanitary towel of claim 11, said adhesive consumption is that every inch groove is at least 0.0015 gram.
13, by the sanitary towel of claim 11, said adhesive consumption is that every inch groove is lower than 0.01 gram.
14, by the sanitary towel of claim 1, said groove is at least 10% of said absorbent cores length along said sanitary towel longitudinal extension length.
15, by the sanitary towel of claim 14, said groove is at least 25% of said absorbent cores length along said sanitary towel longitudinal extension length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85103254 CN1010658B (en) | 1984-07-20 | 1985-04-23 | Trough of belt sanitary towel with dry cover |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/632,754 US4624666A (en) | 1984-07-20 | 1984-07-20 | Channeled napkin with dry cover |
| CN 85103254 CN1010658B (en) | 1984-07-20 | 1985-04-23 | Trough of belt sanitary towel with dry cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85103254A true CN85103254A (en) | 1986-10-29 |
| CN1010658B CN1010658B (en) | 1990-12-05 |
Family
ID=25741605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85103254 Expired CN1010658B (en) | 1984-07-20 | 1985-04-23 | Trough of belt sanitary towel with dry cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1010658B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423789C (en) * | 2003-09-25 | 2008-10-08 | 宝洁公司 | Absorbent articles comprising fluid acquisition zones with coated super-absorbent particles |
| CN105902343A (en) * | 2016-05-25 | 2016-08-31 | 太仓市报艺商务调查有限公司 | Low-temperature healthcare sanitary towel and processing method thereof |
| CN108472164A (en) * | 2016-02-29 | 2018-08-31 | 金伯利-克拉克环球有限公司 | Absorbent article with channel |
-
1985
- 1985-04-23 CN CN 85103254 patent/CN1010658B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423789C (en) * | 2003-09-25 | 2008-10-08 | 宝洁公司 | Absorbent articles comprising fluid acquisition zones with coated super-absorbent particles |
| CN108472164A (en) * | 2016-02-29 | 2018-08-31 | 金伯利-克拉克环球有限公司 | Absorbent article with channel |
| CN105902343A (en) * | 2016-05-25 | 2016-08-31 | 太仓市报艺商务调查有限公司 | Low-temperature healthcare sanitary towel and processing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1010658B (en) | 1990-12-05 |
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