CN1198547C - Disposable absorbent article with skin care composition on apertured top sheet - Google Patents

Abstract

The present invention relates to a disposable absorbent article such as a diaper (20). The disposable absorbent article is provided with a structural carrier (24), a bottom sheet (26) and an absorbent core (28), wherein the structural carrier (24) can be penetrated by liquid; at least the part periphery of the bottom sheet (26) is connected with the structural carrier (24); the bottom sheet (26) can not be penetrated by the liquid; the absorbent core (28) is positioned between the structural carrier (24) and the bottom sheet (26). When the disposable absorbent article is worn, the structural carrier (24) which can be penetrated by liquid has an inner surface which faces the inner orientation of the disposable absorbent article, and an outer surface which faces the skin orientation of a wearer. The structural carrier (24) has at least about 12% of an effective open area and a plurality of holes of which the effective sizes are larger than 0.1 square millimeter. The outer surface of the structural carrier (24) is provided with a skin protective composition of an effective amount. The composition is semisolid or solid below 20 DEG C and can be partially transferred on the skin of the wearer.

Description

The disposable absorbent article that has skin care compositions on the apertured top sheet

Technical field

The present invention relates to disposable absorbent article, as diaper and adult's incontinence article, the present invention relates more specifically to effectively to dispose the disposable absorbent article of urine and low viscosity fecal material pass.

Background technology

Can buy on market that many such being used to absorbs the high capacity primary absorbent device of urine kind such as diaper.These kind disposable articles for use generally include certain top sheet materials, an absorbent article core and liquid-tight stock footage of liquid thoroughly.Though the absorbent structure of these types is efficiently for absorbing liquid, they can not absorb feces (that is hereinafter referred to as, " BM ").Usually, BM is trapped between the outer surface and wearer's skin of top flat of liquid, many adhering on the wearer's skin.

In order to prevent that BM from adhering on the wearer's skin, before being placed into absorbent device on the wearer's body, the care-giver usually with protectiveness or " waterproof " product such as vaseline or mineral oil be administered on buttocks or the anus position.This step generally includes the care-giver oil or skin lotion is poured on one only on hand, and two handss that rub are wiped this material on baby's skin then so that above-mentioned substance is distributed on hand.In order to eliminate this waste, the loaded down with trivial details and step easily forgotten, now carried out many trials, prepare the absorbent device that on top flat, contains skin protection material protectiveness or treatment usefulness.

A kind of being administered on the absorbent product with the material of giving softness, protective coating as skin lotion is mineral oil.Mineral oil (being also referred to as liquid petrolatum) be by distillation in the oil high boiling point (that is, 300-390 ℃) fraction and the mixture of the various liquid hydrocarbons that obtain.Mineral oil is liquid ambient temperature such as 20-25 ℃.As a result, mineral oil is fluid and mobile on relatively, even when on the top flat that is administered to articles for use, also is like this.

Because mineral oil is flow-like and mobile at ambient temperature, it often can not remain fixed on the surface of top flat, and it enters the inside of diaper by the top flat migration on the contrary.Therefore, need on top flat, use the mineral oil of high relatively consumption so that the required treatment or the skin moistening benefit of protective coating to be provided.This not only increases these costs that is added with the product of skin lotion, and also has other injurious effects.

One of these adverse effects are the reductions of fluid handling properties, because high-load mineral oil often stops up the opening of top flat.And when mineral oil was moved to the inside of articles for use, therefore it reduced the hygroscopicity of lower floor's absorbent article core, if use a kind of articles for use often as hydrophobic additive.When the amount of the mineral oil of being used increases, hygroscopic reduction will be more obvious.

Even do not increase its consumption, the migration trend of using back mineral oil also has other adverse effect.For example, the mineral oil that is applied can move to, enter and the packaging material of the product by being added with skin lotion.This may need the barrier type packing film to be avoided the product mineral oil in fluid to do to expand or other leakage.

In order to overcome the problem relevant, skin lotion is administered on the absorbent product with mineral oil.Be added with the absorbent product of skin lotion: (1) has treatment or protectiveness benefit, and (2) do not need at room temperature is the quite high-load coating (as, mineral oil) of liquid; (3) do not need special packing or barrier material in the packing.

Really solved the problem relevant although be added with the absorbent product of skin lotion with mineral oil, must be when being administered to skin lotion on the absorbent product carefully to prevent the obturation of top flat.This class obturation of previous top flat prevents that the urine infiltration from by top flat, causing leaking inevitably.In order to overcome this problem, skin lotion is applied on the top flat in the whole lip-deep mode that can not be coated with top flat, thereby makes some part of top flat not contain skin lotion.An example of this class coating technique is to use skin lotion with the strip that separates each other.Although the skin lotion bar makes urine penetrate top flat really, but increased the complexity of applying method, skin lotion is transported on the skin unevenly and may makes the untreated areas of top flat contaminated, thereby reduce the hygroscopic element that urine is transferred to lower floor.

Therefore, an object of the present invention is to provide the disposable absorbent article with structurized carrier, described carrier has excellent urine and BM disposes performance.Terminology used here " structurized carrier " refers to any two dimension or three-dimensional morphosis, designs this structure and carries and carry a kind of compositions then, the passage that still keeps urine to pass through therein simultaneously.

Another object of the present invention provides a kind of structurized carrier that disposable absorbent article is used, this carrier has effective perforated area and a plurality of perforate, this perforate has sufficient effective dimensions so that urine and low viscosity fecal material pass are permeated therein by so that can relatively easily use skin care compositions, has eliminated the inaccessible problem of structurized carrier simultaneously.Terminology used here " skin care compositions " refers to contain any compositions of one or more reagent, and when transferring on the wearer's skin from articles for use, said composition can provide the benefit of treatment and/or protection skin.To go through exemplary material below.

Another advantage of the present invention provides the absorbent device that has skin care compositions on the outer surface of structurized carrier, said composition can be transferred on the wearer's skin and it produces required skin benefit effectively and/or minimizing BM adheres on the skin, thereby improve the property easy to clean of BM, can not suppress the ability that structurized carrier is disposed urine simultaneously.

Use the present invention can obtain these and other objects, will be clearer by reading following disclosure to the present invention.

Summary of the invention

The present invention is disposable absorbent article such as diaper.This disposable absorbent article contains structurized carrier, is connected to liquid-tight egative film and the absorbent article core between structurized carrier and egative film on the structurized carrier to the small part periphery.When wearing this disposable absorbent article, this structurized carrier has towards the inner surface of the internal approach of disposable absorbent article with towards the outer surface of wearer's skin orientation.This structurized carrier has at least about effective perforated area of 12% and the many effective dimensions hole greater than 0.1 square millimeter.The outer surface of this structurized carrier contains the skin care compositions of effective dose, and said composition is semi-solid or solid under 20 ℃, and it can partly be transferred on the wearer's skin.

Description of drawings

Although this description thinks that to point out and to explicitly call for protection claims of the present invention to finish will understand the present invention better by following accompanying drawing and in conjunction with appended explanation, wherein identical parts provide with identical label, wherein

Fig. 1 is the vertical view with the disposable absorbent article of the present invention shown in the phantom.

The specific embodiment

Here used " absorbent device " speech is meant articles for use that absorb and preserve bodily exudate, more particularly, refers to press close to or places to absorb and to retain the various excremental articles for use of discharging from health near wearer's health." disposable " speech is to illustrate not plan to wash or otherwise restore or the absorbent device that re-uses as absorbent device (that is, often be abandoned after using once and preferably be recycled, make compost or handle with the alternate manner that is fit to environmental protection)." whole " absorbent device refers to be combined and formed the integral body of coordination so that they do not need the independently absorbent device of functional unit as independently overlapping and serving as a contrast by parts independently.The preferred embodiment of absorbent device of the present invention is whole disposable absorbent article, diaper 20 as shown in Figure 1.Term used herein " diaper " refers to be worn on its body absorbent device on every side down by baby and adult-incontinence person usually.The present invention also is applicable to other absorbent device such as incontinent brief, incontinence undergarments, moisture absorption pad, apkin cover and lining, feminien hygiene clothes etc.

Fig. 1 is that diaper 20 of the present invention is its flattening, the plane graph of the state that do not shrink (promptly, pull out the contraction that elasticity causes), wherein part-structure cuts open to clearly show that the structure of diaper 20, wherein towards and the contact wearer diaper 20 parts, promptly inner surface is towards the observer.As shown in Figure 1, diaper 20 preferably includes the structurized carrier 24 of a saturating liquid, the liquid-tight egative film 26 that links to each other with this structurized carrier 24 and the absorbent article core 28 between this structurized carrier 24 and egative film 26.Diaper 20 can further comprise elastica system lateral plate (not shown), elastica system leg cuff (not shown), elasticized waistand (not shown) and have the fastening system of adhesive tape sheet (tape tabs), many places generally all use 36 to represent.

The periphery that the diaper 20 that is shown in Fig. 1 has first lumbar region 27, second lumbar region 29, the crotch district 31 between first lumbar region 27 and second lumbar region 29 and limited by the outward flange of diaper 20, when wearing this diaper 20, also put first lumbar region 27 and wearer's front portion, second lumbar region 29 is relative with first lumbar region 27 and with wearer's rear portion and put, wherein the longitudinal edge of diaper is designated as 33, and the end limit is designated as 35.The inner surface of diaper 20 comprises diaper 20 parts adjacent with wearer's health between the operating period (that is, inner surface is made of with other parts that link to each other with this structurized carrier 24 the structurized carrier 24 of at least a portion usually).Outer surface comprises diaper 20 parts (that is, outer surface is made of with other parts that link to each other with this egative film 26 at least a portion egative film 26 usually) of placing away from wearer's health between the operating period.

Fig. 1 represents an embodiment of diaper 20, and the length of wherein structurized carrier 24 and egative film 26 and width dimensions are usually greater than the length and the width dimensions of absorbent article core.Structurized carrier 24 and egative film 26 extend beyond the edge of absorbent article core 28, thereby form the periphery of diaper 20.Although structurized carrier 24, egative film 26 and absorbent article core 28 can be with multiple known configuration assemblings, but preferred diaper configuration is described in the following document usually: authorized the USP3 of Kenneth B.Buell on January 14th, 1975,860,003, exercise question is " the contractile sidepiece of disposable diaper "; JIUYUE in 1992 was authorized people's such as Kenneth B.Buell USP5 on the 29th, and 151,092, exercise question is " absorbent device with the hinged dynamic elasticity lumbar of the resilient flexibility that sets in advance "; Above-mentioned two patents are introduced the present invention as a reference.

Absorbent article core 28 can be usually compressible, fit and to wearer's skin non-stimulated and any hygroscopic piece that can absorb and preserve liquid such as urine and other bodily exudate.As shown in Figure 1, absorbent article core 28 has medicated clothing face, health face, side and waist limit.Absorbent article core 28 can be made into multiple different size and dimension (for example rectangle, hourglass shape, T shape, asymmetric shape etc.), and can make, as be commonly referred to the pulverizing wood pulp of air felt by the multiple material that is generally used for the absorption liquid of disposable diaper and other absorbent device.The example of the hygroscopic material that other is fit to comprises corrugated cellulose wadding; Comprise altogether the meltblown polymer of (coform); Chemistry is stiffening, modification or cross-linked cellulosic; Thin paper comprises thin paper wrappage and lamination thin paper; The moisture absorption foam; The moisture absorption sponge; The superabsorbent polymer; The material of sucting wet gel material or any equivalence or the combination of material.

The configuration of absorbent article core 28 and structure also can be various (for example, absorbent article core 28 can have all thickness district, hydrophilic gradient, superabsorbent gradient, than low average density and than the harmonic(-)mean quantification area; Maybe can comprise one or more layers or one or more structure).But total absorptive capacity of absorbent article core 28 should be consistent with the design load and the desired use of diaper 20.In addition, the size of absorbent article core 28 and absorptive capacity can be diversified to be fit to from the baby to adult wearer.

Authorize people such as Weisman as the typical absorbent structure of absorbent article core 28 at 1986.9.9, be entitled as the United States Patent (USP) 4,610,678 of " high-density absorbent structure "; 1987.6.16 authorize people such as Weisman, be entitled as the United States Patent (USP) 4,673,402 of " absorbent device " with double-deck core; 1989.12.19 authorize Angstadt and be entitled as the United States Patent (USP) 4,888,231 of " absorbent article core " with prime coat; Be described 1989.5.30 authorize in the United States Patent (USP) 4,834,735 that people such as Alemany is entitled as " the high-density absorbent spare with low-density and low quantitative collection district ", these patents are introduced the present invention as a reference.

The medicated clothing face of the contiguous absorbent article cores 28 of egative film 26 is placed, and preferably by the fixture (not shown) as known in the art those fixtures be connected on the absorbent article core.Term used herein " connection " comprises following configuration: wherein by an element directly being fixed on another element and this element directly is fixed on other element, and by an element is fixed to earlier on the intermediary element, this intermediary element be fixed to again on other element and with an element indirect securement to other element.

For example, the arrangement of isolating line, helix or the point of adhesive layer that egative film 26 can be by even successive adhesive layer, composition or binding agent is fixed on the absorbent article core 28.Have been found that gratifying bonding agent is H.B.Fuller Company of St.Paul, Minnesota produces, and code name is the product of HL-1258.The connection means preferably include the United States Patent (USP) 4 that is entitled as " disposable refuse-maintenance medicated clothing " that 1986.3.4 for example authorizes people such as Minetola, 573, the patterns of openings network of the bonding agent filament described in 986, be more preferably several the bonding agent thin silk threads that are coiled into spiral pattern, authorize Sprague as 1975.10.7, Jr. United States Patent (USP) 3,911,173; 1978.11.22 authorize people's such as Ziecker United States Patent (USP) 4,785,996; 1989.6.27 authorize the United States Patent (USP) 4,842 of Werenicz, illustrated in the Apparatus and method for shown in 666.Here introduce above all kinds of patents as a reference.On the other hand, connection means can comprise heat bonding, pressure bonding, ultrasonic bonding, dynamic mechanically is bonding or any as known in the art adhesion means that other is suitable for or the combination of these means.

26 pairs of liquid of egative film such as urine are also preferably to be made by a plastic sheeting thoroughly, though also can use other flexible liquid-tight material.Here used " flexibility " speech is meant that material is submissive and will be easily consistent with the general shape and the profile phase of human body.

The ejection that egative film 26 prevents from the absorbent article core 28 to absorb and preserves get wet article such as the sheet and the underwear of touching diaper 20.Therefore, egative film 26 may comprise a kind of weaving or non-woven material; Such as polyethylene or the such thin polymer film of polypropylene thermoplastic thin film; Or such as the such composite of a kind of non-woven material of plated film.Preferably, egative film 26 is that thickness is the thermoplastic film of about 0.012mm (0.5mil) to about 0.051mm (2.0mils).Egative film 26 used particularly preferred materials comprise the Industuies by Tredegar, Inc. (Terre Haute, Indiana) RR8220 blown film of Zhi Zaoing and RR5475 casting film.Egative film 26 be preferably embossing and/or through delustring handle to provide one more like the outward appearance of fabric.In addition, when preventing that still Excreta from passing through egative film 26, egative film 26 can allow steam from absorbent article core 28 effusions (that is, gas-pervious).

When wearing diaper, structurized carrier 24 has towards the internal approach of disposable diaper, particularly towards first or inner surface of absorbent article core 28 orientation, with relative second or the outer surface towards the wearer's skin orientation.

The health face of structurized carrier 24 and absorbent article core 28 is also put, but needn't be adjacent, and preferably is connected on egative film 26 or the absorbent article core 28 by connection means well known in the art.Suitable connection means are above-mentioned at egative film 26 being connected to those of absorbent article core 28.In a preferred embodiment of the invention, structurized carrier 24 and egative film 26 are directly connected to each other at the diaper periphery.

Structurized carrier 24 is submissive, soft feeling and to the wearer's skin nonirritant.And structurized carrier 24 is liquid, allows liquid (as urine) to see through its thickness easily.Suitable structurized carrier 24 can be made by many materials, as porous foam, reticulated polymer foam, plastic sheeting with holes, or natural fiber (as wood or cotton fiber), synthetic fibers (as polyester or polypropylene fibre) or weaving or nonwoven web natural and the synthetic fibers combination.Preferably, structurized carrier 24 is made so that liquid contained in wearer's skin and the absorbent article core 28 is kept apart by hydrophobic material.On the other hand, structurized carrier 24 can be handled so that it becomes hydrophilic with surfactant.

Structurized carrier 24 preferably has a plurality of holes, the effective dimensions in these a plurality of holes be at least 0.2 square millimeter, more preferably be at least 0.5 square millimeter, further preferably be at least 1.0 square millimeters, most preferably be at least 2.0 square millimeters.Effectively the hole is under the image acquisition parameter of describing hereinafter, and the gray level on standard grayscale scale 0-255 is 18 or lower those.

Structurized carrier 24 preferred effectively perforated areas at least 15%, more preferably be at least 20%, further preferably at least 25%, most preferably be at least 30%.

Adopt graphical analysis hereinafter to measure effective hole dimension and effective perforated area by follow procedure.This program has three key steps: image acquisition promptly obtains the representational image in zone on the surface of structurized carrier 24; Image measurement, that is, and the perforated area percent of measurement image and the area in each hole and their girth; And data analysis, the area and the circumferential measurements value that are about to perforated area percent, each hole output to an expansion table (spreadsheet), carry out in this expansion table frequency distribution, area distributions and and the calculating of hydraulic radius.

Use has the image analysis system of frame grabber plate (frame grabberboard), microscope, video camera and image analysis software.One DT2855 type frame grabber plate is provided, available from DataTranslation (Marlboro, Mass.).One VH5900 monitoring microscope, video camera also are provided, and it has the VH50 camera lens of contact-type irradiation head, and (Fair Lawn N.J.), is used for images acquired and stores image into computer documents available from Keyence Company.Keyence microscope images acquired, and the frame grabber plate is computer-readable number format with the analog signal conversion of this image.Image is stored in the computer documents, and use suitable software as (3.1 versions are measured for Edmaons, Optimas Image Analysis software Wash.) available from BioScan Company.In order to use Optimas Image Analysis software, computer should have (Redmond, Windows software Wash.), 3.0 or higher version available from Microsoft.Also should have the CPU that is equivalent to Intel 80386 at least.Can use any suitable desktop PC, have been found that now 486DX33 type PC is particularly suitable.In Sony Trinitron watch-dog model is to be about 50 to show show the image that stores in the file and access from file with final demonstration amplification on the PVM-1343MO.

The image acquisition step of pointing out above need be from representational structured supports 24 samples of specific type diaper 20 or from 10 zoness of different of the specimen material that will test.Each zone is about 5.8 millimeters * 4.2 millimeters rectangle.Sample is placed on the black backing plate with the contrast between the sample part that increases hole and limiting hole.The average gray level and the standard deviation of black backing plate are respectively 16 and 4.

Use is directly installed on the Keyence monitoring microscope on the copy frame (copystand) of sample top, and the lamp in room is turned off to come images acquired.Adjust and the Keyence light source of monitoring irradiation sample is the average gray level and the standard deviation of 0.3 wedge to measure available from blackness on the KodakGray Scale of Eastman Kodak company (Rochester, New York) with Optimas software.Thereby the average gray level of the wedge that the controlling organization of adjusting the Keyence light source shines is 111 ± 1, and standard deviation is 10 ± 1.Gather all images in the single time period, monitor the Keyence light source by average gray level and the standard deviation of in the entire image gatherer process, measuring wedge.

When measuring single hole, it is important having only effective hole dimension.Measure effective hole dimension and will carry out quantitatively the contributive hole dimension of the hole of structurized carrier 24, and the fiber in the zone that to cross an expection be the hole and the contribution of fibre bundle are illustrated expection.An effective hole is less than or equal to any hole of 18 by structurized carrier 24, use image acquisition parameter gray level as herein described.Therefore, the hole of expection can be divided into a plurality of effective holes by transverse fiber.

Calibrate image analysis software by the footage number image that obtains from sample image with millimeter.The mean filter (averaging filter) of 3 * 3 pixels (pixel) in Optimas 3.1 menu images is applied to the image of each storage to reduce noise.The hole grey level range that detects is 0-18.Think that not being completely contained in 5.8 * 4.2 observes interior hole, district not in each area and circumferential measurements value.Therefore, the meansigma methods of area and girth and distribution are not completely contained in the influence of observing the hole in the district.

But, will comprise each hole in the image that can not be observed fully in the calculating of perforated area percent.Exist this difference to be because perforated area percent only is the image that has the ratio of the number of picture elements of 0-18 gray level and pixel sum in the image.Do not comprise that in the calculating of perforated area gray level is 19 or bigger zone.

Use Optimas Image Analysis software to measure the meansigma methods of perforated area percent of 10 images of each structurized carrier 24.Perforated area percent is defined as that gray level is the number of pixels of 0-18 and the ratio of pixel sum in the image.Measure the perforated area percent of image of a special area of the support samples of each representative structureization.Then, with each perforated area percent in 10 images in addition on average to obtain the perforated area percent of whole sample.

By also (Redmond, Excel expansion table (spreadsheet) Wash.) carries out data analysis available from Microsoft.Perforated area percent, hole area that the Excel expansion table will derive from Optimas software are organized with the measured value of hole girth and are in the same place.Use this expansion table to obtain the sample mean of each hole area and the hydraulic radius value of calculation (area is divided by girth) in standard deviation, size and frequency distribution and each hole.

Use the Excel expansion table also to calculate the distribution of single hole area.These holes are classified into storehouse with some size range.Mensuration fall into the number of the hole area in some purpose size range and the area in each scope and.Increment with 0.05 square millimeter is provided with scope.These area tables are shown as the percent of the total open area of sample.The measured value in each hole of all 10 images by making up each sample obtains the frequency and the summation of area distributions.

There are many production technologies to can be used to the carrier 24 of production structureization.For example, structurized carrier 24 can be spunbond, combing, wet-laying, melt and spray, the nonwoven web of fiber such as Hydroentangled, above-mentioned combination or laminated thing.The carrier 24 of preferred constructionization comprises the composite and the fibroreticulate Hydroentangled thing of combing/combing, and described composite is Hydroentangled and carry out hot-air by the known means in non-woven fabrics field and penetrate bonding on forming net.On the other hand, foraminous formed film, weaven goods woollen yarn knitting net and weaven goods perforate woollen yarn knitting net (woven apertured netting) also are suitable.

Although the concrete compositions (hereinafter referred to as " skin care compositions " and " compositions ") that the method according to this invention is carried is not the key factor of the skin in the zone below the improvement absorbent device; but; it is apparent that said composition must provide function protectiveness, non-occlusive (as the barrier of the still saturating steam of a relative liquid-tight) to prevent the excessive hydration of skin; and prevent that skin is exposed in the material contained in the body excretions, perhaps it must contain the reagent that skin-care effect directly or indirectly is provided.For example, effect comprises the removal that improves skin stimuli such as feces or urine indirectly.Said composition can take various forms, and includes, but is not limited to emulsion, skin lotion, emulsifiable paste, ointment, ointment, powder, suspending agent, capsule, gel etc.

Terminology used here " skin care compositions of effective dose " refers to a certain amount of concrete compositions; when being administered to or moving to the one or more body contact face of absorbent device; as time passes, it will provide the protective barrier of carrying by this absorbent device effectively and/or skin-care effect will be provided.Certainly, the effective dose that is administered to the compositions on the articles for use will depend on used concrete compositions to a great extent.But, preferably about 0.05 milligram/inch of the scope of the amount of the compositions at least a portion wearer-contacting surface of absorbent device ²(0.0078 milligram/centimetre ²) to about 80 milligrams/inch ²(12.4 milligrams/centimetre ²), be more preferably about 1 milligram/inch ²(0.16 milligram/centimetre ²) to about 40 milligrams/inch ²(6.20 milligrams/centimetre ²), further preferably about 4 milligrams/inch ²(0.62 milligram/centimetre ²) to about 26 milligrams/inch ²(4.03 milligrams/centimetre ²).These scopes are only as for example, the character that persons of ordinary skill in the art will recognize that compositions will determine for reach required skin-care effect the amount of the compositions that must use, according to disclosure of the present invention, these consumptions are determined by the experiment of routine.

Although be administered to the consumption of the skin care compositions on the absorbent device is an importance of the inventive method, and the consumption that is transported to the compositions on the wearer's skin between the operating period of one or more processed articles for use is even more important.Although for the consumption that provides required skin-care effect must be transported on the skin will depend on the character of the compositions that is adopted to a certain extent, the applicant finds, can only carry quite low consumption, still can provide required skin effects simultaneously.This for preferred compositions especially like this.

Another benefit of the inventive method is using so that the required low but compositions of effective dose to be provided of control skin care compositions.This uses differently with the typical irregular craft of skin protectant, and under the sort of situation, care-giver/user will be used usually than needed big a lot of amount.Owing to the result who is transported to from skin on the articles for use, the manual too much material that adds also may produce adverse influence to the fluid handling properties of absorbent device.Really, for some material such as vaseline, the amount of using may actually cause inaccessible effect by hand, thus infringement skin.A benefit of the inventive method is to provide a barrier to surface moisture, avoids the obturation (that is, keeping skin permeability) of skin simultaneously.Therefore, the inventive method conveying to compositions during whole wearing is controlled, this delivery of composition that will make the optimum amount to the skin to keep and/or to improve skin health.

For the consumption that used a treated absorbent device about 3 hours and be transported to during (wear the time typical daytime) skin care compositions on the wearer, preferred consumption is at least about 0.01 milligram/inch during wearing in 3 hours ²(0.0016 milligram/centimetre ²), more preferably at least about 0.05 milligram/inch ²(0.0078 milligram/centimetre ²), further preferably at least about 0.1 milligram/inch ²(0.016 milligram/centimetre ²) delivery of composition to skin.Usually, the consumption of treated articles for use compositions of being carried during wearing in 3 hours is about 0.01 milligram/inch ²(0.0016 milligram/centimetre ²) to about 5 milligrams/inch ²(0.78 milligram/centimetre ²), be more preferably about 0.05 milligram/inch ²(0.0078 milligram/centimetre ²) to about 3 milligrams/inch ²(0.47 milligram/centimetre ²), further preferably about 0.1 milligram/inch ²(0.016 milligram/centimetre ²) to about 2 milligrams/inch ²(0.31 the milli fill/centimetre ²).

For using treated articles for use (in other words as continuous during 24 hours, situation about changing according to the occupation mode of routine, generally include that per 3 to 4 hours of daytime changed once and change new articles for use before the sleep at night), preferably during 24 hours at least about 0.03 milligram/inch ²(0.0047 milligram/centimetre ²), more preferably at least about 0.1 milligram/inch ²(0.016 milligram/centimetre ²), further preferably at least about 0.3 milligram/inch ²(0.047 milligram/centimetre ²) delivery of composition on wearer's skin.Usually, all use when each the replacing after 24 hours of treated articles for use, the amount of the compositions of conveying is about 0.03 milligram/inch ²(0.0047 milligram/centimetre ²) to about 18 milligrams/inch ²(2.79 milligrams/centimetre ²), be more preferably about 0.1 milligram/inch ²(0.016 milligram/centimetre ²) to about 10 milligrams/inch ²(1.55 milligrams/centimetre ²), further preferably about 0.3 milligram/inch ²(0.047 milligram/centimetre ²) to about 6 milligrams/inch ²(0.93 milligram/centimetre ²).

Will be appreciated that, be transported to used multiple material in the skin care compositions on the skin in the method according to this invention, those are considered to safely and effectively that the material of skin protectant is the used rational material of the present invention.This class material comprises that food and medicine management board of the United States Federal (FDA) is about defined I class active substance in the provisional final regulation of the human skin care medicine that uses of nonprescription drugs; it comprises at present: alantoin, gel aluminum hydroxide, calamine cream, cupu oil, polydimethylsiloxane, cod liver oil (mixing), glycerol, Kaolin, vaseline, lanoline, mineral oil, shark liver oil, white vaseline, Talcum, local starch, zinc acetate, zinc carbonate, zinc oxide etc.Other material that may use is a food and medicine management board of the United States Federal (FDA) about the III class active substance defined in the provisional final regulation of the human skin care medicine of nonprescription drugs, and it comprises at present: active yeast cell derivative, aldioxa, aluminum acetate, microporous fibre element, vitamin D ₃, colloidal oatmeal powder, cysteine hydrochloride, pantothenylol, Peru balsam oil, protein hydrolysate, racemic methionine, sodium bicarbonate, vitamin A etc.

The skin care ingredient of many FDA regulations has been used in the commercially available skin-protection product at present, as A+D  ointment, Vaseline  petroleum jelly, Desitin  diaper rash cream and Daily Care ointment, the medicinal infant powder of GoldBond , Aquaphor  treatment ointment, Baby Magic  baby moistening liquid, Johnson ' s Ultra Sensitive  baby cream, Johnson ' s baby moistening liquid, lip pomade etc.These commercially available prod can be applied on the absorbent device producing used treated articles for use in the inventive method, and these products are carried out modification or do not carry out modification and carry by this new method to make things convenient for it.

As mentioned below, though in the inventive method used skin care compositions needn't preferably have fusing point and distribute, but make at room temperature said composition relative fixed and being confined on the wearer-contacting surface of articles for use, under body temperature, be delivered to the wearer easily, and, under extreme storage requirement, still not exclusively be liquid.Preferred said composition is easily transferred on the skin by normal contact, wearer's motion and/or body heat.Because the preferred basic fixed of said composition is on the wearer-contacting surface of articles for use, so the skin care compositions that only needs to hang down consumption is relatively given desirable skin protection benefit.In addition, in the inventive method during used treated articles for use, need not special the obstruct or packaging material in packing.

In preferred embodiments, the used skin care compositions of the present invention 20 ℃ be under the ambient temperature for solid, be more typically semisolid." semisolid " refers to that said composition has the rheological characteristic of pseudoplastic behavior or plastic fluid.If do not apply shearing, the outward appearance of said composition is semi-solid, but improves with shear rate, and compositions becomes mobile.Although this is that it also comprises some small amount of liquid components because said composition mainly comprises solid constituent.Preferably, the zero-shear viscosity of compositions of the present invention is about 1.0 * 10 ⁶Centipoise is to about 1.0 * 10 ⁸Centipoise, more preferably about 5.0 * 10 ⁶Centipoise is to about 5.0 * 10 ⁷Centipoise.Term used herein " zero-shear viscosity " refers under very low shear rate (for example 1.0 seconds ^-1) with the viscosity of dish and cone viscosimeter mensuration; A kind of suitable instrument is from New Castle, and the TA instrument company of DE buys with the CSL100 model.Those of ordinary skill in the art will recognize that other component that can use except that high melting point component (as described below) so that the comparable mensuration viscosity that contains the compositions of this class component to be provided, and zero-shear viscosity is by the viscosity of this based composition the curve extrapolation of shear rate to be measured to the zero shear rate under about 20 ℃.

Preferred compositions at least at room temperature is that semisolid is so that the compositions migration is minimum.In addition, the final fusing point of compositions (100% liquid) preferably be higher than may " harshness " storage requirement (greater than 45 ℃) (for example, the car body of the warehouse of Arizona, Florida etc.).Representational compositions with these melting point properties is at United States Patent (USP) 5,643, and 588 (Roe etc.), 5,607,760 (Roe etc.), 5,609,587 and 5,635 have made detailed description in 191, and its disclosure is introduced the present invention as a reference.Particularly, preferred compositions has the fusing point distribution shown in the following table:

Characteristic	Preferable range	Most preferred range
			% liquid is when room temperature (20 ℃)	2-50	3-25
% liquid is when body temperature (37 ℃)	25-95	30-90
			Final fusing point (℃)	≥38	≥45

Owing to be solid or semisolid at ambient temperature, so the trend that preferred compositions flows to and moves in undesirable zone of its absorbent device that will use can be very not big.This means only needs less skin care compositions just can give ideal treatment, protectiveness and/or conditioning benefit.

In order to increase the stationarity of preferred compositions, the viscosity of composition prepared should be high as much as possible, thereby prevent to flow to the undesirable zone in the articles for use.Unfortunately, in some cases, the viscosity height may be transported on the wearer's skin by composite inhibiting.Therefore, viscosity should reach a balance; The enough height of viscosity so that compositions be fixed on the surface of articles for use, again can be too not high and hinder it and be transported on the wearer's skin.The suitable viscosity that compositions is used is generally about 5-500 centipoise, preferred about 5-300 centipoise, more preferably from about the 5-100 centipoise adopts rotary viscosity measuring (a kind of suitable viscometer can be by Melrose Park, and the Lab Line instrument company of IL buys with 4537 models) at 60 ℃.This viscometer uses No. 2 spindles to operate under 60rpm.

Be used to provide the compositions of skin smoothness benefits for design, a kind of useful active component in these compositionss is one or more Derma-Guards and/or lubricant.This employed " lubricant (emollient) " be prevent moistening or stimulation, softness, softening, smooth, apply, lubricate, preserve moisture, the material of protection and/or cleaning skin.Will be appreciated that the defined just lubricant of several active substances of regulation listed earlier herein.In preferred embodiments, these lubricants have plasticity or liquid consistency under room temperature is 20 ℃.This specific lubricant denseness makes compositions give softness, the lubricated and aqueous sensation of skin moistening.

Be used for representational lubricant of the present invention and include, but are not limited to following lubricant: the oil base class; Polyol polyester; The sucrose-fatty esters; Polyethylene Glycol and derivant thereof; Wetting agent; Fatty acid ester; The alkyl ethoxylate class; The fatty acid ester ethoxylate class; Aliphatic alcohols; Polysiloxane-based; Propylene glycol and derivatives class thereof; Glycerol and derivant thereof (comprise glyceride, aceto-glyceride and C _12-C ₂₈The glyceride of the ethoxylation of fatty acid), 2,2'-ethylenedioxybis(ethanol). and derivatives class thereof; Spermaceti or other wax; Fatty acid; Fatty alcohol ether (particularly fatty chain length has the material of 12-28 carbon atom, as stearic acid); Propenoxylated aliphatic alcohol; Other fatty ester of polyhydroxy-alcohol; Lanoline and derivant thereof; Kaolin and derivant thereof; The skin protectant of any regulation that the front is listed; Or the mixture of these lubricants.Suitable oil-based lubricant comprises those hydrocarbon with 16-32 carbon atom chain length, or the mixture of these hydrocarbon.The petroleum base hydrocarbon that has these chain lengths comprises mineral oil (also being referred to as " Albolene ") and vaseline (also being referred to as " ceresine ", " petroleum jelly " and " mineral jelly ").Mineral oil is commonly referred to as more low viscous and has the mixture of the hydrocarbon of 16-20 carbon atom.Vaseline is commonly referred to as more heavy-gravity and has the mixture of the hydrocarbon of 16-32 carbon atom.Vaseline and mineral oil are the used particularly preferred lubricants of the present composition.

Suitable fatty acids esters lubricant comprises by C _12-C ₂₈Fatty acid is preferably by C _16-C ₂₂Satisfied fatty acid, and short chain (C _1-C ₈, preferred C _1-C ₃) monohydric alcohol those materials of deriving and obtaining.The representational example of described ester comprises methyl hexadecanoate, methyl stearate, isopropyl laurate, isopropyl myristate, isopropyl palmitate, ethylhexyl palmitate and composition thereof.The suitable fatty acids ester lubricant also can be by long-chain fatty alcohol (C more _12-C ₂₈, preferred C _12-C ₁₆) and more short chain fatty acid for example the ester of lactic acid derive and obtain, as Lauryl lactate and lactic acid cetyl.

Suitable alkyl ethoxylate series lubricant agent comprises that average degree of ethoxylation is about 2 to about 30 C _12-C ₂₂Alcohol ethoxylate.Preferred alcohol ethoxylate lubricant is selected from: average degree of ethoxylation is about 2 to about 23 lauryl, cetyl and stearyl ethoxylate, and composition thereof.The representational example of described alkyl ethoxylate comprises: dodecyl polyoxyethylene ether-3 (average degree of ethoxylation is 3 lauryl ethoxylate), dodecyl polyoxyethylene ether-23 (average degree of ethoxylation is 23 lauryl ethoxylate), ceteth-10 (average degree of ethoxylation is 10 spermol ethoxylate), octadecyl polyoxyethylene ether-10 (average degree of ethoxylation is 10 stearyl alcohol ethoxylate).When using these alkyl ethoxylate lubricants, it is used in combination with oil-based lubricant such as vaseline usually, and the weight ratio of alkyl ethoxylate lubricant and oil-based lubricant is from about 1: 1 to about 1: 5, preferably from about 1: 2 to about 1: 4.

Suitable aliphatic alcohols lubricant comprises C _12-C ₂₂Aliphatic alcohol, be preferably C _16-C ₁₈Aliphatic alcohol.Representational example comprises spermol and stearyl alcohol, and composition thereof.When using these aliphatic alcohol lubricants, it is used in combination with oil-based lubricant such as vaseline usually, the aliphatic alcohol lubricant to the weight ratio of oil-based lubricant from about 1: 1 to about 1: 5, preferably from about 1: 1 to about 1: 2.

The lubricant of the present invention that is applicable to of other kind comprises polysiloxane compound.Be generally used for those materials that suitable silicone materials of the present invention comprises the monomer siloxane unit with following structure:

In the formula, for each independently for the siloxanyl monomers unit, R ₁And R ₂Can be hydrogen or any alkyl, aryl, alkenyl, alkaryl, aralkyl, cycloalkyl, halogenated hydrocarbons independently of one another, or other group.Any in these groups can be that replace or unsubstituted.R in any specific monomer unit ₁And R ₂Can be different from binder of toothpaste.In addition, polysiloxanes can be straight chain, side chain or have circulus.In addition, radicals R ₁And R ₂The siliceous functional group that can be other independently of one another is as (but being not limited to) siloxanes, polysiloxanes, silane and polysilane.Radicals R ₁And R ₂Also can comprise any organo-functional group, described functional group for example comprises alcohol, carboxylic acid, phenyl and amine functional group.

The alkyl group of illustrative is methyl, ethyl, propyl group, butyl, amyl group, hexyl, octyl group, decyl, octadecyl etc.The alkenyl of illustrative is a vinyl, pi-allyl etc.The aromatic radical of illustrative is phenyl, xenyl, naphthyl etc.The alkaryl of illustrative is tolyl, xylyl, ethylbenzene base etc.The aralkyl of illustrative is benzyl, α-phenethyl, β-phenethyl, α-benzene butyl etc.The group of naphthene base of illustrative is cyclobutyl, cyclopenta, cyclohexyl etc.The halogenated hydrocarbon group of illustrative is chloromethyl, bromoethyl, tetrafluoro ethyl, fluoro ethyl, trifluoroethyl, fluoroform phenyl, hexafluoro xylyl etc.

The viscosity that needs only the polysiloxanes that can make it mobile, so useful when polysiloxanes can flow or be used on the absorbent device can change as the common variation of the viscosity of polysiloxanes as wide as possible.This is including, but not limited to being low to moderate 5 centistokes (passing through glass viscosity instrumentation amount in 37 ℃) to about 20,000,000 centistoke.Preferably in the time of 37 ℃ the viscosity of polysiloxanes from about 5 to about 5,000 centistokes, more preferably from about 5 to about 2,000 centistokes, best from about 100 to about 1000 centistokes.By as with polysiloxanes emulsifying in surfactant, or, itself anti-mobile high viscosity polysiloxanes can be deposited on the absorbent device effectively by means of the method for solvent as hexane (just illustrative) provides polysiloxane solution.To be discussed in more detail below polysiloxane emollient will be added to ad hoc approach on the absorbent device.

Be used for preferred polysiloxane compound of the present invention and be disclosed in the United States Patent (USP) 5,059,282 of authorizing people such as Ampulski on October 22nd, 1991, the document is hereby incorporated by.The particularly preferred polysiloxane compound that can be used as the lubricant in the present composition comprises: the methyl polysilicone hydride compounds of band phenyl functional group (for example, polyphenyl methyl siloxane) and cetyl or the functionalized polydimethylsiloxane of octadecyl Dow Corning 556 Cosmetic-Grade Fluid:, as be respectively the polysiloxane fluid of Dow2502 and Dow 2503.Except having the such substituent group of phenyl functional group or alkyl group, effectively substituent group also has amino, carboxyl, hydroxyl, ether, polyethers, aldehyde, ketone, amide, ester and thiol group.In these effective substituent groups, this class group that comprises phenyl, amino, alkyl, carboxyl and hydroxyl is more more preferred than other group; Phenyl functional group most preferably.

Suitable wetting agent comprises: glycerol, propylene glycol, sorbitol, trihydroxy stearin etc.

The amount of contained lubricant will depend on various factors in the compositions, comprise the factors such as other component in related specific lubricant, desirable skin moistening benefit, the compositions.Described compositions can comprise the lubricant that accounts for the about 0-100% of gross weight.Preferably, described compositions comprises about 10-95% weight, 20-80% more preferably from about, the lubricant of best about 40-75% weight.

Be used for an optional and preferred ingredients in the compositions of treatment/protection skin/conditioning skin of the inventive method and be compositions (comprising preferred lubricant and/or other skin condition/treatment/protection reagent) being fixed on the reagent on the interior or desired area on it of treated articles for use.Because some preferred lubricant has plasticity or fluid consistency at 20 ℃ in the compositions, so lubricant often has the trend that flows or migration takes place, even when being subjected to the shearing of appropriateness, also be like this.When on the wearer-contacting surface that lubricant is applied to absorbent device or other position, when especially being in fusing or molten condition, lubricant can not keep mainly in treated zone or on it.On the contrary, this lubricant often will move and flow in the unwanted zone of articles for use.

Specifically, if lubricant migrates into the inside of articles for use, it may produce undesirable influence to the absorbability of articles for use absorbent article core, and this is that the hydrophobic property that is used for many lubricants used in the compositions of method of the present invention and other skin conditioning agent causes.This also means need use much more lubricant to obtain required skin smoothness effect on articles for use.The consumption that increases lubricant not only increases cost, but also make to the adverse effect of the absorbent article core of articles for use and during the processing/repacking of treated articles for use the unfavorable conveying of compositions aggravate.

By making lubricant mainly be fixed on the surface of the articles for use that compositions will apply or in the zone, fixative has been offset lubricant migration or mobile this trend.It is believed that this part is because the fusing point that fixative is brought up to lubricant with the fusing point and/or the viscosity of compositions and/or the fact on the viscosity.Because fixative preferably miscible (or by suitable emulsifiers dissolve in lubricant) with lubricant, therefore, in the zone that it also is trapped in lubricant on the wearer-contacting surface of articles for use or lubricant will apply.

Also is favourable with fixative " locking " on the wearer-contacting surface of its articles for use that will apply or zone.This can be when using on being applied to articles for use fast the fixative of " fix " (or curing) realize.In addition, by aerator, fan, chill roll etc. treated articles for use are carried out the crystallization that external refrigeration can be quickened fixative.

Except can miscible with lubricant (or being dissolved in wherein), this fixative preferably has such fusing point and distributes, promptly its will to provide be solid or semisolid compositions at ambient temperature.In this respect, the fusing point of preferred fixative is at least about 35 ℃.Like this, this fixative itself will not have migration or mobile trend.The fusing point of preferred fixative is at least about 40 ℃.Usually, the melting range of fixative is from about 50 ℃ to about 150 ℃.

When being used for when of the present invention, suitable fixative can be selected from any in many reagent, as long as the preferred property of skin care compositions provides skin benefit of the present invention.Preferred fixative will comprise: be selected from mulit-hydroxy fatty acid ester, polyhydroxy fatty acid amide, C _14-C ₂₂Aliphatic alcohol, C _12-C ₂₂Fatty acid and average degree of ethoxylation are the C of about 2-30 _12-C ₂₂The fixative of alcohol ethoxylate and composition thereof.Preferred fixative comprises: C _16-C ₁₈Aliphatic alcohol, most preferred crystallization high-melting-point material is selected from: spermol, stearyl alcohol, docosanol and composition thereof.The linear structure of these materials can be quickened the curing on treated articles for use.The mixture of spermol and stearyl alcohol is particularly preferred.Other preferred fixative comprises: C _16-C ₁₈Fatty acid most preferably is selected from: Palmic acid, stearic acid and composition thereof.Palmic acid and stearic mixture are particularly preferred.Also have other preferred fixative to comprise: the C of average degree of ethoxylation from about 5 to about 20 _16-C ₁₈Alcohol ethoxylate.Preferred fat alcohol, fatty acid and alcohol ethoxylate are linear.Importantly, these preferred fixative such as C _16-C ₁₈Aliphatic alcohol has increased the crystalline rate of compositions, makes compositions rapid crystallization on the surface of substrate.

Perhaps use separately, perhaps can be with the said fixing agent batching of other type that be used in combination, that can be used as fixative comprise wax, as Brazil wax, ceresine, Cera Flava, candelilla wax, paraffin, ceresine, esparto wax, ouricury wax, rezowax, different paraffin and other known mixing and mineral wax.The high-melting-point of these materials can help compositions is fixed on the desirable surface or position on the absorbent device.In addition, microwax also is effective fixative.Microwax helps low-molecular-weight hydrocarbon " locking " in skin care compositions.Preferred wax is paraffin.The example of particularly preferred another kind of fixative is that paraffin such as ParrafinS.P.434 (derive from Strahl and Pitsch Inc.P.O.Box 1098 West Babylon, NY11704).

Be used for of the present invention, suitable mulit-hydroxy fatty acid ester and will have following structural formula:

In the formula, R is C _5-C ₃₁Alkyl, preferably straight chain C _7-C ₁₉Alkyl or alkenyl, more preferably straight chain C _9-C ₁₄Alkyl or alkenyl, most preferably straight chain C _11-C ₁₇Alkyl or alkenyl, or its mixture; Y is the polyhydroxy alkyl part, and wherein hydrocarbyl chain is at least with 2 free hydroxyl groups that are connected directly on this chain; N is at least 1.Suitable Y group can be by polyhydric alcohol such as glycerol, tetramethylolmethane; Sugar is as Raffinose, maltose glucose, galactose, sucrose, glucose, xylose, fructose, maltose, lactose, mannose and erythrose; Sugar alcohol such as erythritol, xylitol, maltose alcohol, mannitol and sorbitol; And sugar alcohol acid anhydride such as sorbitan are derived and are obtained.

Be used for the suitable mulit-hydroxy fatty acid ester of a class of the present invention and comprise some Isosorbide Dinitrate, preferred C _16-C ₂₂The Isosorbide Dinitrate of satisfied fatty acid.Because the typical preparation method of these Isosorbide Dinitrates, thus these Isosorbide Dinitrates usually comprise single-, two-, three-etc. the mixture of ester.The representative example of suitable Isosorbide Dinitrate (for example comprises the Palmic acid Isosorbide Dinitrate, SPAN 40), the stearic acid Isosorbide Dinitrate (for example, SPAN 60) and the behenic acid Isosorbide Dinitrate, it comprises one or more monoesters, diester and three esters of these Isosorbide Dinitrates, for example Palmic acid anhydro sorbitol monoesters, diester and three esters, stearic acid anhydro sorbitol monoesters, diester and three esters, behenic acid anhydro sorbitol monoesters, diester and three esters, and blended tallow fatty acids anhydro sorbitol monoesters, diester and three esters.Also can use the mixture of different Isosorbide Dinitrates in addition, as the mixture of Palmic acid Isosorbide Dinitrate and stearic acid Isosorbide Dinitrate.Particularly preferred Isosorbide Dinitrate is the stearic acid Isosorbide Dinitrate, normally the mixture of monoesters, diester and three esters (adding some four ester) such as SPAN 60 and with trade name GLYCOMUL-S (Lonza, Inc.) the stearic acid Isosorbide Dinitrate of Chu Shouing.Although comprise monoesters, diester and three esters in these Isosorbide Dinitrates usually, add the mixture of some four ester, in these mixture, what account for Main Ingredients and Appearance is monoesters and diester.

Another kind ofly be used for of the present invention, suitable mulit-hydroxy fatty acid ester and comprise: some monoglyceride, preferably C _16-C ₂₂The monoglyceride of satisfied fatty acid, as monostearin, monopalmitin and glycerol one (behenic acid) ester.In addition, the same with Isosorbide Dinitrate, the mixture of monoglyceride will comprise some diester and three esters usually.Yet described mixture should mainly comprise and will be used for monoglyceride of the present invention.

Another kind ofly be used for of the present invention, suitable mulit-hydroxy fatty acid ester and comprise some sucrose fatty acid ester, the C of preferably sucrose _12-C ₂₂Polyunsaturated fatty acid ester.One ester and the diester of sucrose are particularly preferred, and comprise stearic sucrose one ester and diester and lauric acid sucrose one ester and diester.

Be used for of the present invention, suitable polyhydroxy fatty acid amide and have following structural formula:

R in the formula ¹Be H, C _1-C ₄Alkyl, 2-ethoxy, 2-hydroxypropyl, methoxy ethyl, methoxy-propyl or its mixture, preferred C _1-C ₄Alkyl, methoxy ethyl or methoxy-propyl, more preferably C ₁Or C ₂Alkyl or methoxy-propyl, most preferably C ₁Alkyl (being methyl) or methoxy-propyl; R ²Be C _5-C ₃₁Alkyl, preferred straight chain C _7-C ₁₉Alkyl or alkenyl, more preferably straight chain C _9-C ₁₇Alkyl or alkenyl, most preferably straight chain C _11-C ₁₇Alkyl or alkenyl, or its mixture; Z is the polyhydroxy alkyl part, and linear hydrocarbyl chain wherein is at least with 3 hydroxyls that are connected directly on this chain.Authorized the United States Patent (USP) 5,174,927 (being hereby incorporated by) of Honsa on the 29th referring to December in 1992, this Patent publish these polyhydroxy fatty acid amides and preparation method thereof.

Preferred being derived by the reducing sugar in the reductive amination process obtains the Z part; Glycosyl (glyc1tyl) most preferably shrinks.Suitable reducing sugar comprises glucose, fructose, maltose, lactose, galactose, mannose and xylose.Can use the corn syrup that is rich in glucose, be rich in the corn syrup of fructose and be rich in the corn syrup of maltose, and list in top various sugar.These corn syrup can obtain being used for the mixture of Z saccharic composition partly.

Z partly is preferably selected from-CH _2-(CHOH) _n-CH ₂OH ,-CH (CH ₂OH)-[(CHOH) _N-1]-CH ₂OH ,-CH ₂OH-CH ₂-(CHOH) ₂(CHOR ³) (CHOH)-CH ₂OH, n is the integer of 3-5 in the formula, R ³Be H or ring-type or aliphatic monosaccharide.Most preferably wherein n is 4 shrink glycosyl, particularly-and CH _2-(CHOH) _4-CH ₂OH.

In the said structure formula, R ¹Can be for example N-methyl, N-ethyl, N-propyl group, N-isopropyl, N-butyl, N-2-ethoxy, N-methoxy-propyl or N-2-hydroxypropyl; Can be to R ²Select, so that for example coconut oleoyl amine, stearmide, oleamide, lauramide, myristamide, decyl amide, palmitamide, Adeps Bovis seu Bubali amide etc. to be provided.The Z part can be 1-deoxy-glucose base, 2-deoxidation fructosyl, 1-deoxidation malt-base, 1-deoxidation lactose base, 1-deoxy-galactose base, 1-deoxymannose base, 1-deoxidation maltotriose glycosyl etc.

Most preferred polyhydroxy fatty acid amide has following general formula:

R in the formula ¹Be the methyl or methoxy propyl group; R ²Be C _11-C ₁₇Straight chained alkyl or thiazolinyl.These materials comprise: N-lauryl-N-methyl glucose amide, N-lauryl-N-methoxy-propyl glucamide, N-cocoyl-N-methyl glucose amide, N-cocoyl-N-methoxy-propyl glucamide, N-palmityl-N-methoxy-propyl glucamide, N-Adeps Bovis seu Bubali base-N-methyl glucose amide or N-Adeps Bovis seu Bubali base-N-methoxy-propyl glucamide.

Just as noted earlier, some fixatives needs an emulsifying agent to be dissolved in the lubricant helping.Particularly for some glucamide such as HLB value at least about N-alkyl-N-methoxy-propyl glucamide of 7, all the more so.Suitable emulsifying agent generally includes the HLB value and is lower than those materials of about 7.In this respect, have found that previous described Isosorbide Dinitrate, as the HLB value be about 4.9 or littler stearic acid Isosorbide Dinitrate can be used to these glucamide fixatives are dissolved in the vaseline.Other suitable emulsifying agent comprises: octadecyl polyoxyethylene ether-2 is (with structural formula CH ₃(CH ₂) ₁₇(OCH ₂CH ₂) _nThe polyglycol ether of the corresponding to stearyl alcohol of OH, the meansigma methods of n is 2 in the formula), Arlacel-65, lauric acid Coronex (isosorbide laurate) and monostearin.The consumption of described emulsifying agent should be enough to make fixative to be dissolved in the lubricant, obtains basic mixture uniformly with activation.For example, when add 20%, during as the octadecyl polyoxyethylene ether-2 of emulsifying agent and Arlacel-65 1: 1 mixture, will can not fuse into N-coco group-N-methyl glucose amide in the single-phase mixture and about 1: 1 mixture of vaseline usually will fuse in the single-phase mixture.

Perhaps use separately, perhaps can be with the said fixing agent composition of other type that be used in combination, that can be used as fixative comprise wax, as Brazil wax, Cera Flava, candelilla wax, paraffin, ceresine, esparto wax, ouricury wax, rezowax and other known wax.Preferred wax is paraffin.An example of particularly preferred paraffin is that Parrafin S.P.434 (derives from Strahl and Pitsch Inc.P.O.Box 1098West Babylon, NY11704).

Whether the amount that should add the optional fixative in the compositions will depend on various factors, comprise the active substance (as lubricant) that relates to, related specific fixative (if present), other component in the compositions, need emulsifying agent that fixative is dissolved in the medium factor of other composition.If the use fixative, then compositions will comprise about 5% to about 90% fixative usually.Preferably, compositions will comprise about 5% to about 50%, most preferably from about 10% to about 40% fixative.

Certainly, the structurized carrier of wishing very much at least a portion articles for use is made to promote liquid (as urine) to carry by structurized carrier fast by hydrophilic material.Similarly, wish that compositions should be carrying by structurized carrier to guarantee that liquid is quick of fully moistening.Perhaps, can use the hydrophobicity skin care compositions, as long as use them so that can enough keep the fluid handling properties of structurized carrier.(for example, such as discussed below, it is a method that realizes this target that compositions is administered on the structurized carrier unevenly.) this has just reduced bodily exudate and will flow out compositions-treated structurized carrier, rather than the probability that is conducted through structurized carrier and is absorbed by absorbent article core.

When the needs hydrophilic compositions, depend on concrete component used in the compositions, can need or not need hydrophilic surfactant (or mixture of hydrophilic surfactant) to improve wettability.For example, the HLB value of some fixative such as N-cocoyl-N-methoxy-propyl glucamide is at least about 7, fully moistening under the situation that does not add the hydrophilic surfactant active.When on the structurized carrier that compositions is applied to articles for use, other fixative, as the HLB value approximately less than 7 C _16-C ₁₈Aliphatic alcohol may need to add the hydrophilic surfactant active to improve wettability.Similarly, hydrophobic lubricant such as vaseline may need to add the hydrophilic surfactant active, if the hydrophilic surfactant active is needs.Certainly, can fully do not kept by alternate manner (applying as non-homogeneous) when the wearer-contacting surface of being considered is not the structurized carrier of articles for use or when the fluid handling properties of structurized carrier, the wettability problem will not be-individual factor.

Suitable hydrophilic surfactant active preferably can be miscible with other composition in the skin care compositions, forms the mixture of blend.Owing to use the disposable absorbent product be applied with compositions may make skin sensitivity, therefore, these surfactants also should be to be soft and non-irritating for skin.Usually, these hydrophilic surfactants are nonionics, and it is not only skin non-irritating, and will avoid the adverse effect to any other structure in the processed articles for use.For example, reduction of the hot strength of thin paper laminate, adhesives adequacy etc.

After compositions is applied on the articles for use, is nonmigratory on the suitable nonionic surfactant-based basis, and has about 4 usually to about HLB value of 20, preferred about 7 to about 20.Become nonmigratoryly, these non-ionic surface active agents will have the fusion temperature of storage, transportation, transaction that is higher than at disposable absorbent article and the temperature that is run between the operating period usually, for example at least about 30 ℃.In this regard, these non-ionic surface active agents preferably will have the fusing point that is similar to the aforementioned fixation agent.

Be used for being applied to articles for use, ionic surfactant pack compositions, suitable in the fluid drainage district of diaper is drawn together at least: alkylglycoside; Alkylglycoside ether is as disclosing in the United States Patent (USP) 4,011,389 that the present invention authorizes people such as Langdon 8 days March in 1977 as a reference introducing; The ester of alkyl polyethoxylated such as Pegosperse 1000MS (derive from Lonza, Inc., Fair Lawn, NewJersey), average degree of ethoxylation from about 2 to about 20, preferred from about 2 to about 10 C ₁₂-C ₁₈Anhydro sorbitol one ester, diester and/or three esters of the ethoxylation of fatty acid, as TWEEN 60 (the stearic acid Isosorbide Dinitrate of average degree of ethoxylation about 20), TWEEN 61 (the stearic acid Isosorbide Dinitrate of average degree of ethoxylation about 4), and aliphatic alcohol and about 1 condensation product to about 54 moles of ethylene oxide.The alkyl chain of described aliphatic alcohol normally straight chain (linear) configuration and comprise about 8 to about 22 carbon atoms.Particularly preferably be and comprise about 11 alcohol and every mol of alcohol about 2 condensation products to about 30 moles oxirane to the alkyl of about 22 carbon atoms.The example of described ethoxylated alcohol comprises: the condensation product of myristyl alcohol and every mol of alcohol 7 moles of ethylene oxide, the condensation product of coconut alcohol (mixture of the aliphatic alcohol that alkyl chain length changes between 10-14 carbon atom) and about 6 moles of ethylene oxide.Many suitable ethoxylated alcohols can obtain from market, and they comprise TERGITOL 15-S-9 (C ₁₁-C ₁₅The condensation product of linear alcohol and 9 moles of ethylene oxide), sell by Union Carbide Corporation; KYRO EOB (C ₁₃-C ₁₅The condensation product of linear alcohol and 9 moles of ethylene oxide), by The Procter ﹠amp; Gamble Co. sells; The surfactant of product NEODOL by name (selling), particularly NEODOL 25-12 (C by shell chemical company ₁₂-C ₁₅The condensation product of linear alcohol and 12 moles of ethylene oxide) and NEODOL 23-6.5T (C ₁₂-C ₁₃Linear alcohol with distill the condensation product that (topping) removes 6.5 moles of ethylene oxide of some impurity); Especially the surfactant of product PLURAFAC by name (by BASF AG's sale), particularly PLURAFAC A-38 (C ₁₈The condensation product of straight chain alcohol and 27 moles of ethylene oxide).(some hydrophilic surfactant, particularly ethoxylated alcohol such as NEODOL 25-12 also can play the alkyl ethoxylated lubricant).Other example of preferred ethoxylated alcohol surfactant comprises: Brij surfactant of ICI class and composition thereof, wherein Brij72 (being octadecyl polyoxyethylene ether-2) and Brij76 (being octadecyl polyoxyethylene ether-10) are particularly preferred.In addition, ethoxylation to the spermol of average degree of ethoxylation about 10 to about 20 and the mixture of stearyl alcohol also can be used as hydrophilic surfactant.

The another kind of suitable surfactant that is used for compositions comprises: by the Aerosol OT of American CyanamidCompany sale, i.e. aerosol OT.

The suitable surfactant of a class that also has that is used for compositions comprises: silicone copolymers such as General Electric SF 1188 (copolymer of polydimethylsiloxane and polyoxy alkylidene ether) and General Electric SF 1228 (silicone-polyether copolymer).These silicone surfactants can be used in combination with the hydrophilic surfactant such as the ethoxylated alcohol of above-mentioned other kind.Having found that these silicone surfactants are being low to moderate 0.1% of composition weight, is effective during the concentration of 0.25-1.0% more preferably from about.

When the needs hydrophilic compositions, the wettability that increases compositions to the amount of the required hydrophilic surfactant of desirable degree will depend in part on the factors such as HLB value of the HLB value of employed fixative and consumption, employed surfactant.When needs increased the wettability of compositions, compositions can comprise about 0.1 to about 50%, preferred about 1 to about hydrophilic surfactant of 25%, most preferably from about 10 to about 20%.

Compositions also comprises other component in the emulsion that is present in this type of usually, cream, ointment, skin lotion, powder, suspending agent etc.These components comprise water, viscosity modifier, spice, disinfection activating agent, antiviral agent, vitamin, medical active agent, film former, deodorizer, opacifier, astringent, solvent, antiseptic etc.In addition, can add stabilizing agent to increase the shelf life of compositions, as cellulose derivative, protein and lecithin.All these materials are known in this area as the additive of described prescription, and are used in the compositions for use of the present invention with suitable amount.

If use water-based skin care composition, then need antiseptic.Suitable antiseptic includes but not limited to: propylparaben, methyl butex, benzylalcohol, benzyl dimethyl ammonium chloride (benzylkonnium), ternary calcium phosphate, Yoshinox BHT (BHT) or acids such as citric acid, tartaric acid, maleic acid, lactic acid, malic acid, benzoic acid, salicylic acid etc.Suitable viscosity increasing agent comprises as some reagent in the effective fixative.Other suitable viscosity increasing agent comprises: the cellulose of alkyl galactomannans, silicon dioxide, Talcum, magnesium silicate, sorbitol, silica sol, Magnesiumaluminumsilicate, zinc stearate, wool wax alcohol, sorbitan (sorbiton), sesquioleate (sesquioleate), cetyl hydroxyethyl cellulose and other modification.Suitable solvent comprises propylene glycol, glycerol, Cyclomethicone, Polyethylene Glycol, hexylene glycol, dihydroxylic alcohols or polyhydroxyl solvents.Suitable vitamins comprises A, D3, E, B5 and E acetas.

When preparation product of the present invention, lotion composition is applied on the outer surface (that is body-facing surface) of the carrier of structures of samplesization.Can use uniform distribution to have any coating process of the lubriation material of fusion or liquid consistency.Suitable method comprises: spray, printing (for example hectographic printing), coating (for example intaglio plate coating), extrude or the combination of these coating techniques, for example skin care compositions is sprayed on the surface such as roll of rotation, and then said composition is transferred on the outer surface of structurized carrier of articles for use.

Because structurized carrier has effective perforated area and a plurality of hole with sufficient effective dimensions, so what are no matter be applied to the amount of the skin care compositions on the structurized carrier, the carrier that urine and low viscosity fecal material pass can infiltration structureizations.Therefore, even structurized carrier is saturated by skin care compositions fully, urine and low viscosity fecal material pass will easily be permeated therein and be passed through, because this structure of carrier has just in time produced sufficient separation between the zone of the skin care compositions of being used, make fluid penetrate carrier in the clear.By providing structurized carrier to solve inaccessible problem, this carrier has effective perforated area and a plurality of hole with abundant effective dimensions.

The compositions of effective dose need be administered on the structurized carrier to reduce BM to the adhesiveness of skin and/or provide the skin effect to the wearer.Be administered to preferably about 0.1 milligram/inch of the consumption of the compositions on the structurized carrier of articles for use ²To about 35 milligrams/inch ²The compositions that it is believed that this consumption is enough to give required treatment of structurized carrier and/or protectiveness effect.

Since solved inaccessible problem, so compositions can be applied on the outer surface of structurized carrier in any required mode.For example, compositions can be applied to whole outer surface or only on its part.Also compositions can be applied on the outer surface of structurized carrier unevenly." inhomogeneous " refers to the position of consumption, distribution of compositions and pattern etc. and can change on structurized carrier surface.For example, some part on the treated surface of structurized carrier can have the compositions of more or less amount, comprises on it surface portion without any compositions.

Can compositions be applied on the articles for use in any moment of assembly process.For example, can before the disposable absorbent article packing, compositions be applied on the structurized carrier of disposable absorbent finished product.Also can with other material combination with before forming the disposable absorbent finished product, compositions is applied on the structurized carrier.

Usually the compositions with molten condition is applied on the structurized carrier of articles for use.Because compositions is in fusion under the temperature of ambient temperature, the form with the coating of heating is applied to compositions on the structurized carrier usually.Usually, before being applied on the structurized carrier of articles for use, compositions being heated to temperature range being about 35-100 ℃, preferably about 40-90 ℃.In case fused compositions is applied on the structurized carrier of articles for use, makes its cooling and curing to form cured coating or the thin film on the structurized carrier surface.The decision design applying method is with the cooling that helps compositions/fixing.

Diaper 20 can further contain the leg cuff (not shown) of the elastica system of holding performance of improving liquid and other body excretions.The leg cuff of each elastica system can contain the different embodiments that body excretions leaks in several reduction leg area.(leg cuff can be and be also referred to as the bottom bands of trouser legs, flank sometimes, stops and close up or elasticity closes up.) United States Patent (USP) 3,860,003 described a kind of disposable diaper 20, it provides the leg cuff (sealing close up) of the contractile leg opening with flank and one or more elastic components so that elastica system to be provided.Authorize people's such as Aziz United States Patent (USP) 4 March 20 nineteen ninety of common transfer, 909,803, exercise question is " disposable absorbent article with wing of elastica system ", described have " axial " elastica system the wing (stopping closing in) to improve the disposable diaper that holds performance 20 of leg area.In JIUYUE, 1987 of common transfer were authorized the United States Patent (USP) 4,695,278 of Lawson on the 22nd, and exercise question is " absorbent device with dual closing in ", had described to have the disposable diaper 20 that dual closing in comprises the sealing closing in and stops closing in.

Diaper 20 preferably further comprises the applying that improvement is provided and holds the elasticized waistand (not shown) of performance.Elasticized waistand is that expection is with elastic stretch and part or the zone of contraction with the diaper 20 of dynamic applying wearer's waist.Elasticized waistand vertically outwards stretches from least one edge of waist of absorbent article core 28 at least, and forms at least a portion end limit of diaper 20 usually.Disposable diaper is constructed with two elasticized waistands usually, and one is arranged in first lumbar region 27, and another is arranged in second lumbar region 29, although diaper also can be configured to have only an elasticized waistand.And, although elasticized waistand or its any composed component can contain the independently element that is fixed on the diaper 20, but elasticized waistand is preferably configured as extension such as the egative film 26 or the structurized carrier 24 of other element of diaper 20, preferred egative film 26 and structurized carrier 24 both.The belt 34 of elastica system can be configured to many different configurations, comprises the USP4 that authorized people such as Kievit on May 7th, 1985, and 515,595 and above referenced US patent application serial number 07/715,152, these documents are introduced the present invention as a reference.

Diaper 20 also contains the fastening system 36 that forms the side closure, and it remains on eclipsed configuration with first lumbar region 27 and second lumbar region 29, thereby the periphery that side tension is remained on diaper 20 is to remain on diaper 20 on the wearer.Typical fastening system is disclosed in the following document: on July 11st, 1989 was authorized the United States Patent (USP) 4,846,815 of Scripps, and exercise question is " disposable diaper with improved clamp device "; Authorize the United States Patent (USP) 4,894,060 of Nestegard January 16 nineteen ninety, and exercise question is " having the improved disposable diaper that colludes fastening part "; Authorize the United States Patent (USP) 4,946,527 of the common transfer of Battrell August 7 nineteen ninety, exercise question is " pressure sensitive adhesive securing member and preparation method thereof "; Authorized the United States Patent (USP) 3,848,594 of the common transfer of Buell on November 19th, 1974, exercise question is " the band fastening system of disposable diaper "; Authorized the United States Patent (USP) B1 4,662,875 of people's such as Hirotsu common transfer on May 5th, 1987, exercise question is " absorbent device "; With the U.S. Patent application 07/715,152 of this paper front institute reference, each piece of writing in these documents is introduced the present invention as a reference.

Preferably through the following steps diaper 20 is administered on the wearer, promptly, a lumbar region, preferred second lumbar region 29 are placed on wearer's back, and the remainder of diaper 20 are moved between wearer's two lower limbs so that another lumbar region, preferred first lumbar region 27 are placed on wearer's front portion.Then, remove the adhesive tape sheet 26 of fastening system from antiseized part (release portion).Then, the people who uses diaper is wrapped in the lateral plate of elastica system around the wearer, still catches adhesive tape sheet part simultaneously.The outer surface that fastening system is fixed to diaper 20 is to implement the closure of both sides.

Although illustrated and described specific embodiments of the present invention, it is apparent that for those of ordinary skills: under the situation that does not depart from the spirit and scope of the invention, can make various other change and variations the present invention.Therefore, appending claims will cover all these changes and improvements within the scope of the present invention.

Claims (16)

1. disposable absorbent article (20) comprising:

A kind of structurized carrier (24) of liquid, it is included in has when wearing this disposable absorbent article towards the inner surface of the internal approach of described absorbent device with towards the outer surface of wearers skin orientation, described structurized carrier has effective perforated area of at least 12% and many effective dimensions greater than 0.2 square millimeter hole, the described outer surface of described structurized carrier comprises the skin care compositions of effective dose, said composition is semisolid or solid under 20 ℃, and it can partly be transferred on the wearer's skin;

Be connected to liquid-tight egative film (26) on the described structurized carrier to the small part periphery; With

Absorbent article core (28) between described structured supports and described egative film.

2. the disposable absorbent article of claim 1, effective perforated area at least 15% of wherein said structurized carrier.

3. the disposable absorbent article of claim 1, effective perforated area of wherein said structurized carrier is at least 20%.

4. the disposable absorbent article of claim 1, effective perforated area of wherein said structurized carrier is at least 30%.

5. the disposable absorbent article of claim 1, the size in the described hole in the wherein said structurized carrier is greater than 0.5 square millimeter.

6. the disposable absorbent article of claim 1, the size in the described hole in the wherein said structurized carrier is greater than 1.0 square millimeters.

7. the disposable absorbent article of claim 1, the size in the described hole in the wherein said structurized carrier is greater than 2.0 square millimeters.

8. the disposable absorbent article of claim 1, wherein said skin care compositions contains a kind of petroleum-based lubricant, and it is selected from: mineral oil, vaseline and composition thereof.

9. the disposable absorbent article of claim 1, wherein said skin care compositions contains a kind of fixative, at least 40 ℃ of the fusing points of described fixative, wherein said fixative is selected from: mulit-hydroxy fatty acid ester, polyhydroxy fatty acid amide, C ₁₄-C ₂₂Aliphatic alcohol, C ₁₂-C ₂₂Fatty acid, average degree of ethoxylation are 2 to 30 C ₁₂-C ₂₂Alcohol ethoxylate and composition thereof.

10. the disposable absorbent article of claim 9, wherein said fixative contains the C that is selected from spermol, stearyl alcohol and composition thereof ₁₆-C ₁₈Aliphatic alcohol.

11. the disposable absorbent article of claim 9, wherein said fixative contains the mulit-hydroxy fatty acid ester with following formula:

Wherein, R is C ₅-C ₃₁Alkyl; Y is the polyhydroxy alkyl part, has at least 2 free hydroxyl groups that are directly connected on this chain on its hydrocarbyl chain; N is at least 1.

12. the disposable absorbent article of claim 9, wherein said fixative contains the polyhydroxy fatty acid amide with following formula:

R in the formula ¹Be H, C ₁-C ₄Alkyl, 2-ethoxy, 2-hydroxypropyl, methoxy ethyl, methoxy-propyl or its mixture; R ²Be C ₅-C ₃₁Alkyl; Z is the polyhydroxy alkyl part, and its linear hydrocarbyl chain is at least with 3 hydroxyls that are connected directly on this chain.

13. the disposable absorbent article of claim 9, wherein said skin care compositions also comprise the paraffin as fixative.

14. the disposable absorbent article of claim 1, wherein said skin care compositions contains the polysiloxane emollient that has plasticity or fluid consistency at 20 ℃.

15. the disposable absorbent article of claim 1, the size in the described hole in effective perforated area at least 30% of wherein said structurized carrier and the described structurized carrier is greater than 2.0 square millimeters.

16. the disposable absorbent article of claim 1, wherein said skin care compositions contains the polyol polyester lubricant.