CN1291133A - Elastic member and dispoable garment having improved fitness to body during entire use - Google Patents

Elastic member and dispoable garment having improved fitness to body during entire use Download PDF

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Publication number
CN1291133A
CN1291133A CN98813932A CN98813932A CN1291133A CN 1291133 A CN1291133 A CN 1291133A CN 98813932 A CN98813932 A CN 98813932A CN 98813932 A CN98813932 A CN 98813932A CN 1291133 A CN1291133 A CN 1291133A
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CN
China
Prior art keywords
elastomeric material
disposable clothing
extensibility
disposable
pair
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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CN98813932A
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Chinese (zh)
Inventor
埃布拉希姆·雷赞
王林
周尤博
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Procter and Gamble Ltd
Procter and Gamble Co
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Procter and Gamble Ltd
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Publication of CN1291133A publication Critical patent/CN1291133A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49014—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels
    • A61F13/49015—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels the elastic means being elastic panels

Abstract

The present invention is directed to an elastic member, comprising an elastomeric material having a first surface and a second surface opposing the first surface, and a first coverstock layer which is joined to the first surface of the elastomeric material, wherein the elastomeric material has a Retention Force Held after 12 hours at 50 % extension (RFH12H) of at least about 40 g/inch. The present invention is also directed to a disposable garment, comprising a chassis having a front region, a back region and a crotch region between the front region and the back region; at least one pair of side panels extending laterally outwardly from the chassis in the front or back region; and at least one of the side panels comprising an elastomeric material extending laterally outwardly from the chassis; wherein the elastomeric material has a Retention Force Held after 12 hours at the 50 % extension (RFH12H) of at least about 40 g/inch. The chassis comprises a liquid pervious topsheet, a liquid impervious backsheet associated with the topsheet, and an absorbent core disposed between the topsheet and the backsheet.

Description

Elastic component and wear in the process the disposable clothing that improves the suitability of health
Invention field
The present invention relates to elastic component and disposable clothing.The example of this kind disposable clothing comprises disposable underclothes, comprise the disposable sanitary napkin that the disposable diaper of diaper and training pants and Ms's menstrual period use.Or rather, the present invention relates to elastic component and wear in the process improves the disposable clothing of the suitability of skin or health.
Background technology
Elastic component is used in the various disposable products already, comprises sweat towel, bandage and comprises disposable diaper and the disposable clothing of incontinence article.As used herein term " elastic component " but refer to the material of one deck elastic stretching, perhaps be commonly called " elastic laminate " but and comprise at least one deck elastic stretching material two to multilayer material.It has been generally acknowledged that in the whole use of articles for use, owing to adopted these articles for use of suitable elastic component that the good suitability to health and/or skin can be provided.The example of this class elastic laminate that has been used comprises the mixture that the shrink-down material gathered that combines with elastomeric material is made; The mixture that silk screen, fabric and microfibre are made; And the mixture of making by central elastic layer, gas permeable material and adhesive phase.The example of this class lamination is at the 4th, 522, No. 863 United States Patent (USP)s authorizing Keck etc. and authorize in the 4th, 977, No. 011 United States Patent (USP) of Smith explanation is arranged.
Simultaneously, baby and other incontinences are dressed disposable clothing such as diaper to receive and to hold urine and other body excretes refuses.One kind disposable clothing is commonly called " bandage type ", has disposable clothing is fixed on fastener between the wearer waist.Normal adhesive tape or the mechanical fastening device of using is used as fastener.Recently, the elasticity lateral plate that can stretch is optimized in this kind disposable clothing, and this is to provide better waist adaptability because can be the wearer by working with fastener.Another kind of absorbent garments often is called as " bell-type " or " pull-on type ", has fixed sides and is widely used in the child that can walk and the crowd that need carry out toilet training.The pull-on type clothing has lateral plate, and its edge join forms two leg openings and place's waist opening together.For holding the body excretes refuse, these pull-on type clothings need be pressed close to wearer's waist shank, can not be sagging from the health, sagging, landing.The example of these pull-on type clothings is disclosed in following patent and the application, for example authorize lgaue etc. the 5th, 171, No. 239 United States Patent (USP)s, authorize the 4th of Strohbeen etc., 610, the WO93/17648 number application that No. 681 United States Patent (USP)s, on September 16th, 1993 are announced, authorize Van Gompel etc. the 4th, 940, No. 464 United States Patent (USP)s, authorize the 5th of Hasse etc., 246, No. 433 United States Patent (USP)s and the 5th, 569, No. 234 United States Patent (USP)s authorizing Buell etc.
The superperformance feature of this lateral plate that stretches is extremely important for this kind disposable clothing.Or rather, these tensile properties that comprise tensile force, restoring force, confining force and obtainable elongation (stretching) rate of lateral plate are very important factor at the pull-on type clothing aspect the suitability of health.Tensile properties provides total " stretching " sense in the use for user and wearer.They also affect the ability (for example, for " normally " tensioning sense of diaper in use, the total amount that finally stretches is exactly the amount of wishing to obtain/to keep well the suitability of health) that the user obtains suitable degree of drawing.Lateral plate with high relatively tensile force is convenient to wear.Lateral plate with high relatively restoring force can be reined in out red seal to wearers skin usually, and low relatively restoring force can cause sagging/landing.Lateral plate with very low stretch capability can not obtain suitable to health suitability and may cause the diaper dress uncomfortable and be difficult to put on.Yet, have the relatively low lateral plate that keeps (continuing) power and can not remain on health a part of wearer and cause sagging/landing on the wearer's body easily, cause lower suitability and carrying capacity to health.
The tensile properties of above-mentioned elastic component and/or lateral plate is for good fit very important to health in the disposable product use.Yet, also do not discuss to obtaining good suitability to consider what feature (or characteristic) to health.For disposable product, particularly for disposable clothing, for improving suitability when preventing that clothing sagging/landing in use is unlikely again and on skin, produce red seal and can solve applying absent-mindedness problem, there are not optimal value and/or optimal properties scope to health.Therefore, can provide institute of the present invention to have superiority and benefit without any a kind of prior art.
Summary of the invention
What the present invention is directed to is elastic component, it comprise have first surface and with the elastomeric material of first surface opposing second surface, first cover layer that combines with the first surface of elastomeric material, wherein the confining force (RFH12H) of elastomeric material after under 50% extensibility 12 hours is at least 40 gram/inches.
The present invention is also at disposable clothing, it comprise have the proparea, the end section in back zone and the shelves district between proparea and back zone; In the proparea or at least one pair of lateral plate of outwards laterally extending from the both sides of end section of back zone; And at least wherein have a lateral plate to comprise the elastomeric material that outwards laterally extends from section both sides, the end, wherein the confining force (RFH12H) of elastomeric material after under 50% extensibility 12 hours is at least 40 gram/inches.But end section have transflective liquid top flat, link to each other with top flat can not transflective liquid egative film, the absorbent article core between top flat and egative film.
These and other features of the present invention, aspect and advantage will be conspicuous for those those skilled in the art that read disclosure file.
Brief description of drawings
Summarize claim at last though describe in detail, and claim is pointed out especially and explicit state be regarded as constituting theme of the present invention, but can believe by following description of a preferred embodiment and corresponding accompanying drawing and can understand the present invention better, identical label is used to specify essentially identical parts, wherein:
Fig. 1 is the cutaway view of the elastic component 70 of the preferred embodiments of the present invention;
Fig. 2 is the local enlarged side view of the elastic component 70 shown in Fig. 1;
Fig. 3 is two cycle hysteresis curve figure of elastomeric material in the preferred embodiment;
Fig. 4 is the variation diagram that confining force is passed in time under 50% extensibility in the preferred embodiment;
Fig. 5 is the perspective view of the preferred embodiment of disposable pull-on formula clothing of the present invention under typical service condition;
Fig. 6 is the simplification vertical view in different sheets of the demonstration clothing of embodiment shown in Fig. 5 under its open and flat no-shrink condition (of soil) or district;
Fig. 7 is the cutaway view along the preferred embodiment of the 7-7 transversal gained of Fig. 6.
The detailed description of invention
All references of quoting as proof all intactly are included in herein the list of references.Do not mean that for quoting of these lists of references this determines that it can be used as the background technology of invention required for protection.
Term " pull-on type clothing " refers to and has definite waist opening and a pair of leg opening and wearer and leg must be inserted leg opening and it is increased to waist and just can be through a kind of like this clothing on the health as used herein.Term " disposable " is used herein to that description does not need to wash or the class clothing that adopts other modes to recover or be re-used as clothing to use (for example, is once using the back just it being abandoned; Under the preferable case, recycling is mixed into fertilizer or handles in other environmental protection modes)." one " pull-on type clothing refers to forming the unified whole pull-on type clothing that is combined and constituted by separating component, but lateral plate is not to be attached to the separating component that separates on the end section, lateral plate constitutes (being that clothing does not need the sheet of control, for example end section of Fen Liing and the lateral plate that separates separately) by at least one lamination that also constitutes simultaneously section at the bottom of the clothing or central synusia.The pull-on type clothing is also tool " hygroscopicity " preferably, so that absorb and hold various drainage refuses in the health.The preferred embodiment of pull-on type clothing of the present invention is disposable one pull-on type absorbent garments, diaper 20, as shown in Figure 5.Term " diaper " refers to usually and is worn the pull-on type clothing that absorbs and hold urine and ight soil by baby and other incontinences as used herein.But should be appreciated that the present invention also is applicable to other pull-on type clothings, for example training pant, incontinence panties, feminine sanitary napkin or sweat pants and similar articles for use.Term " sheet " expression is the zone or the assembly (although sheet generally is clear and definite zone or assembly, sheet also can have to a certain degree (function is consistent) to overlap with adjacent section) of pull-on type clothing as used herein.As used herein term " combined " or " combination " thus comprise by parts directly being attached to the situation that miscellaneous part directly is connected with another assembly, thereby also comprise by parts are attached to intermediate layer that miscellaneous part is fixed together on indirect situation about being connected with another parts.
With reference to Fig. 1, but elastic component of the present invention 70 is elastic stretching at least one direction.Elastic component 70 comprises by first surface 150 and the elastomeric material 124 that constitutes with first surface 150 opposing second surface 152, first cover layer 122 that combines with the first surface 150 of elastomeric material 124.In a preferred embodiment, for example as shown in Figure 2, first cover layer 122 combines by adhesive 160 with the first surface 150 of elastomeric material 124.More preferably under the situation, elastic component 70 also comprises second cover layer 126 that combines with the second surface 152 of elastomeric material 124 by adhesive 164.
Elastomeric material 124 of the present invention can be multiple size, form and shape.In a preferred embodiment, elastomeric material 124 is continuous level layer form.The preferred form of continuous level layer comprises scrim, perforation (or pass) film, elastic material web or non-woven fleece and similar material.In another optional embodiment, elastomeric material 124 is to exist with strand (or fine rule) form, is not connected to each other to the continuous level layer.The continuous level layer can be the Any shape that is suitable for being disposed in the lateral plate.The preferable shape of continuous level layer comprises quadrangle, for example rectangle, square, trapezoidal and other any irregular polygons.
Being found SBC, perforation (or porose) elastic film, the preferred thickness that the elastomeric material that is particularly suitable for as elastomeric material 124 is based on the scrim material is that about 0.05mm is between about 1.0mm (0.002-0.039 inch).Other elastomeric materials that are suitable for elastic component 124 comprise " high resiliency (live) " synthetic or natural rubber, other are synthetic or natural foam rubber, elastic film (comprising hot shortness's elastic film), elastic fabric or nonwoven web, elastic mixture or similar material.
Have been found that the tensile properties of elastomeric material 124, for example the period 1 tensile force (FCEF100%) under 100% extensibility, the period 1 tensile force (FCEF200%) under 200% extensibility, 50% extensibility following second round of restoring force (SCRF50%) all are very important factor for the performance of disposable clothing.The stretch characteristic that elastomeric material 124 of the present invention has is within restricted portion.FCEF100% and FCEF200% are wearing/are sloughing measuring that overall " stretching " felt in the disposable clothing process.These two characteristics also influence the ability of the use degree of drawing that the user obtains to be fit to.Elastomeric material 124 with higher FCEF100% and FCEF200% causes being difficult to disposable clothing through wearer (the complexity problem that promptly wears) on one's body.On the other hand, has suitability/fit that the elastomeric material 124 that hangs down FCEF100% and FCEF200% may not obtain appropriateness to health.SCRF50% also is closely related with suitability/fit to wearer's body.Elastomeric material 124 with higher SCRF50% is easy to rein in out red seal and bring sense of discomfort on wearer's skin in wearer's use.Elastomeric material 124 with low SCRF50% can not provide enough elastic forces can not provide the good suitability to health in other words with the suitable position that diaper remains on wearer's body.
Can use tension tester to measure the value of FCEF100%, FCEF200% and SCRF50%.Tension tester comprises upper clip and the lower clamping piece that is positioned under it.Upper clip is movably and connects the tensile force measurement mechanism.Lower clamping piece is fixed on the desk (perhaps floor).Be ready to the wide test sample book (being elastomeric material to be measured) of 12.75cm (5 inches) that is for 2.54cm (1.0 inches) is long, it is clamped between upper clip and the lower clamping piece, so that effective sample length (L) (promptly measuring length) is about 5.08cm (2.0 inches).Apply tensile force by upper clip to test sample book.When not applying tensile force, test sample book keeps its original length (i.e. 0% extensibility).The tension tester that is suitable for can buy from Instron Corporation company (100Royall Street, Canton, MA02021, U.S.A), model is Instron5564.
Fig. 3 has shown a tensile force that two cycles of elastomeric material 124 lag behind and a preferred embodiment of restoring force curve.Curve E1 has shown the tensile force of period 1, and curve R1 has shown the restoring force of period 1.Curve E2 (dotting) has shown the tensile force of second round, and curve R2 has shown the restoring force of second round.Measure as follows and stretch and recovery characteristic.
In the period 1, test sample book is applied in incipient extension power and kept 30 seconds under 200% extensibility under the crosshead speed of about 23 ℃ of temperature 50.8cm/min (20in/min).Then test sample book is relaxed to original state (i.e. 0% extensibility) with identical speed.Tensile force (second round) allows one minute not stress of test sample book maintenance before applying for the second time with identical speed and state to it.
In a preferred embodiment, the FCEF100% of elastomeric material 124 at least approximately is 100 gram/inches.More preferably FCEF100% arrives between about 220 gram/inches at about 120 gram/inches under the situation, and between about 190 gram/inches, this is best suited for wearer's scope to FCEF100% at about 150 gram/inches under the most preferred case.FCEF200% preferably arrives between about 320 gram/inches at about 160 gram/inches, more preferably arrives between about 260 gram/inches at about 180 gram/inches under the situation, arrives between about 240 gram/inches at about 200 gram/inches under the most preferred case.
The SCRF50% of elastomeric material 124 preferably arrives between about 130 gram/inches at about 40 gram/inches, more preferably arrive between about 105 gram/inches at about 65 gram/inches under the situation, arrive between about 95 gram/inches at about 75 gram/inches under the most preferred case.
Confirmed that the power decay of elastomeric material 124 can greatly influence the power fade performance of disposable products and/or clothing.Term " power decay " is meant when material and is applied in specific tensile force and keeps the process that weakens gradually of stretching/restoring force that the certain hour section caused as used herein.Under normal service condition, the time of wearing of disposable diaper is several hrs, is 8 to 12 hours sometimes.For the elastomeric material 124 that is used for disposable clothing very important to keep its most stretching/restoring force in the process whole wearing exactly.Confining force is defined as the tensile force of having kept under 50% extensibility after a period of time (for example 12 hours) second round, and it is measuring of elastomeric material power decay.Confining force (RFH12H) comes to this 50% extensibility after 12 hours measures as used herein.RFH12H is defined as the tensile force (gram/inch) that 50% extensibility is applied to elastomeric material elastomeric material after 12 hours.Elastomeric material with low RFH12H (higher force decay in other words) can not in use provide the lasting suitability to health for disposable product and/or clothing.Particularly when disposable clothing accommodated the body excretes refuse and becomes heavier, the elastomeric material with low RFH12H that is used for herein caused body trunk suitable position sagging or the landing of clothing from the wearer easily.
Except the measurement of RFH12H be in insulating box, carry out, employed tension tester is identical with the measurement mechanism of FCEF100%, FCEF200% and SCRF50%.Be applicable to herein insulating box can buy from Instron Corporation company (100Royall Street, Canton, MA02021, U.S.A), model is Instron3119-005.Measurement is to carry out on the wide sample of 2.54cm (1.0 inches) under 37 ℃ of temperature.Effective sample length is (measurement length) 5.08cm (2.0 inches).In measuring process, test sample book kept 30 seconds under this extensibility when being applied in incipient extension power under the crosshead speed of 50.8cm/min (20in/min) and reaching 200% extensibility.Then test sample book is relaxed to original state (i.e. 0% extensibility) with identical speed.Tensile force (second round) reaches 50% extensibility and keeps 50% extensibility to allow one minute not stress of test sample book maintenance in 12 hours before applying for the second time with identical speed to it.
The RFH12H of elastomeric material 124 of the present invention is at least 40 gram/inches, and preferable case is about at least 50 gram/inches, and more preferably situation is about at least 60 gram/inches.
The preferred enforcement as shown in Figure 4 that the confining force of elastomeric material 124 changes.In Fig. 4, vertical axes is represented confining force, and trunnion axis represents to remain on the time span (from 0 to 12 hour) under 50% extensibility.
In a preferred embodiment, elastomeric material 124 is arranged in " zero strain " stretching lamination, lateral plate 46 for example shown in Figure 7, and preferred elastomeric materials 124 has enough intensity or toughness so that unlikelyly destroyed by the mechanical stretching process.In using the process of disposable clothing, if even elastomeric material 124 parts are damaged, the trend that elastomeric material 124 just has the stress that put on lateral plate continuously to tear up easily or tear.Breakaway poing percentage elongation (EB) and breaking resistance (TR) are the intensity of expression elastomeric material 124 opposing mechanical stretching processes or two mechanical properties of toughness.Elastomeric material with low EB or low TR is easy to be torn up or tear in the mechanical stretching process or in the use of disposable clothing.
In a preferred embodiment, elastomeric material 124 has and is at least 600% EB, preferably is at least 800%.
Measure EB, under about 23 ℃ of temperature, apply the power of crescendo, record applied force and tensile elongation (EL) to sample elastomeric material (being sample) with the speed of 50.8cm/min (20in/min).The roomy about 2.54cm of sample (1.0 inches), measuring length is about 5.08cm (2.0 inches).Define EB (%) with following equation:
EB=(EL／OL)×100(％) -----(1)
EL is the tensile elongation when the excessive forces that sample is applied in is torn herein, and OL is the initial length (promptly measuring length) of sample before the application of force
Be applicable to the tension tester of measuring EB herein can buy from Instron Corporation company (100Royall Street, Canton, MA02021, U.S.A), trade mark is Instron5564.
Preferred elastomeric materials 124 has at least 16 hours breaking resistance (TR), more preferably is at least about 24 hours.In order to measure TR, will cause the power of 100% extensibility to put on sample elastomeric material (being sample) continuously.Like this, to be stretched to 100% extensibility and to be kept at temperature be in 37 ℃ the Water Tank with Temp.-controlled to sample.Be applicable to that Water Tank with Temp.-controlled herein can be numbered BK43 from the Yamato Co. purchase of Tokyo.The size of sample approximately is that the wide and about 3.81cm of 3.60cm (1.43 inches) (1.50 inches) is long.TR (hourage) is defined as forcing in the initial moment of sample and 30% time period between being torn constantly of specimen width at least.
The moisture vapor transmission rate (gas permeability) of also finding elastomeric material 124 is for reducing in the disposable product use because the incidence of disease of the caused heat rash of hygrothermal environment and other disease of skin is very important.Elastomeric material 124 generally has a direct impact the moisture vapor transmission rate (gas permeability) of disposable product.Preferred elastomeric materials 124 has higher aperture area (hole) ratio, thereby provides high moisture vapor transmission rate or gas permeability for disposable product.
In a preferred embodiment, elastomeric material 124 is perforation (or pass) film, and the aperture area that this film has (or hole) is than for about at least 8%, and more preferably situation is about 15%.Define open area ratio OR (%) with following equation:
OR=(OA／TA)×100(％) ----(2)
OA is the gross area of perforated films split shed (hole) part herein, and TA is the gross area of perforated films.
In a further advantageous embodiment, elastomeric material 124 is forms of scrim, and the aperture area that is had (or hole) is than for about at least 30%, and is more preferably about at least 40%, most preferably is about at least 50%.
In preferred embodiment shown in Figure 1, elasticity scrim 124 has a large amount of first strands 125 and a large amount of second strand 127.A large amount of first strands 125 and a large amount of second Share Placement line 127 each other at a predetermined angle α overlap on node 130, form netted hatch frame with a large amount of apertures 132.Each aperture 132 is defined by at least two first adjacent strands and two second adjacent strands form at least, and aperture 132 is essentially rectangle like this.Also can provide the aperture 132 of other shapes, for example parallelogram, square or fan-shaped.Preferred first and second strands 125 and 127 are straight line and parallel to each other substantially substantially.Preferred first strand 125 and second strand 127 overlap at node 130 places and form the about 90 α angles of spending.First and second strands 125 preferably are connected or combination at node 90 places with 127.
Preferred elastomeric scrim 124 is products that are numbered XO2514 of being made by Conwed Plastics Company.This material has about 12 elastic strands (for example first strand 125) at structure direction B per inch, at structure direction D per inch about 7 elastic strands (for example second strand 127) is arranged.The OR that elasticity scrim 124 has is about 50% to 60%.Elasticity scrim 124 also has about 50 gram/inches to the SCRF50% of RFH12H, the FCEF100% of about 175 gram/inches of about 65 gram/inches, the FCEF200% of about 240 gram/inches, about 85 gram/inches, about at least 800% EB and at least 24 hours TR.
In the embodiment shown in fig. 1, elastic component 70 comprises first and second cover layers 122 and 126 and be positioned over elastomeric material 124 between first and second cover layers 122 and 126.First cover layer 122 has inner surface 142 and outer surface 144.The inner surface 142 of first cover layer 122 is the surfaces towards elastomeric material 124.Second cover layer 126 also has inner surface 146 and outer surface 148.The inner surface 146 of second cover layer 126 is the surfaces towards elastomeric material 124.Elastomeric material 124 also has two parallel first surfaces 150 and second surface 152, and each surface is all substantially parallel with each surface of first and second cover layers 122 and 126.First surface 150 is planes of the inner surface 142 of elastomeric material 124 next-door neighbours first cover layer 122.Second surface 152 is planes of the inner surface 146 of elastomeric material 124 next-door neighbours second cover layer 126.
Because elastomeric material 70 all will bear mechanical stretching before using and in the use, first and second cover layers 122 and 126 preferably have higher breakaway poing percentage elongation, more preferably be to stretch or tractile under the situation, but further preferred situation is tractive (but and nonessential be resilient), and without any inappropriate and any tearing or breach preferably do not arranged.And, the preferably soft and chafe and present the feel and the comfortableness of cotton class clothing not of first and second cover layers 122 and 126.The material that is suitable for making first and second cover layers 122 and 126 has multiple, the for example fabric of plastic sheeting, apertured plastic films, weaving or nonwoven web or band coating or nonwoven web, these weavings or nonwoven web can be formed by natural fiber (for example wood and cotton fiber), synthetic fibers (for example polyolefin, polyester, polyamide, polyethylene or polypropylene fibre) or natural and/or synthetic fibers mixture.
Under the preferable case, first and second cover layers 122 and 126 all are same compacting non-woven materials.Preferred sample non-woven material is that the trade mark that FiberWeb Company produces is the product of Sofspan200.This material is 25g/m quantitatively before compacting 2And be 63g/m quantitatively after the compacting 2Term " quantitatively " is the weight of one square metre of plane net flooring as used herein.Perhaps, can use the non-woven material of high deformability.Another kind of scheme is that first and second cover layers 122 and 126 need not be same material, as long as satisfy the performance requirement of expectation such as elastic performance, pliability, flexibility, gas permeability and persistence.Term " compacting non-woven material " refers to along being assembled after structure direction D is subjected to mechanical tension or concentrating so that the non-woven material that can be elongated by less power at structure direction D as used herein.
Fig. 2 has shown the local enlarged side view of lamination 120 (being elastic component 70) along structure direction B.Confirmed combined or otherwise be fixed together and then produce side fixed area A when lamination 120, lamination 120 existing high resiliency and leafing and sliding phenomenon can not occur substantially so all provide extraordinary characteristic and the problem weighed between the every performance of unlikely appearance simultaneously on the performance project of all requirements.Fixing preferably elastomeric material 124 being fixed in adhesive pearl by the side bonding mode in side carried out between cover layer 122 and 126, and this is the part of lamination process.In addition, the side fixing can adopt also that stitching, heat-sealing, combination of ultrasound, pin dash, other bonding processes or other any modes that well known to a person skilled in the art are carried out.Another kind of selectable mode is after elastic component and cover layer stack each layer side of stepped construction to be fixed together.
Under the preferable case, lamination 120 can be the wearer and the consumer provides extraordinary soft feeling.Because the consumer can assess out pliability, so this point is extremely important.In conventional lamination, some trials of eliminating sliding phenomenon usually force the reduction pliability, and frequent reduction with the active ability that can't receive.This is to focus on that using additional meltblown adhesive with whole coated form strengthens combination because previous these are attempted (not reaching the requirement of eliminating slippage).This has caused lamination to produce undesirable stiff sense.Yet the lamination of preferred embodiment is not losing the desired soft feeling of consumer and is not destroying under the situation of active ability and eliminate sliding phenomenon.
Referring to Fig. 2, first adhesive 170 puts on the inner surface 146 of second cover layer 126 the every place outward flange 180 corresponding positions with lamination 120.First adhesive 170 is as another kind of scheme or additionally put on the inner surface 142 of first cover layer 122.For ease of explanation, illustrate and illustrate only at the situation that puts on second cover layer 126.
This form has just produced side fixed area A, and this has eliminated the leafing of aforementioned known lamination and sliding phenomenon substantially and has allowed lamination 120 to stand higher tension force under the situation of not slippage or leafing.Confirmed the marginal zone 180 that first adhesive 170 is limited to lamination 120 can be avoided reducing the extensibility of lamination 120 and can avoiding slight crack occurring on cover layer 122 and 126.Preferred first adhesive 170 applies with the form of a large amount of droplets 168, as shown in Figure 2.Preferred first adhesive 170 is to have noncrystal and flexible adhesives crystal composition.This preferred adhesive is the product of being produced by Findley Adhesive Company that is numbered H9224.
More preferably under the situation, lamination 120 comprises second adhesive 164.Second adhesive 164 preferably puts on the second surface 152 of elastomeric material 124, but can be used as another kind of scheme puts on the first surface 150 of elastomeric material 124.Preferably apply second adhesive 164 with spiral spray pattern 166, just form binding site 167b, this is more discrete than the formed binding site of linear discharge pattern.Need not theoretical proof, can believe that major part second adhesive 164 of injection like this aligns on structure direction D.Proved the extraordinary activity characteristic of spiral spray pattern generating like this.Term " activity " refers to stretch capability as used herein.
Proved and be directly injected on relative (promptly second) cover layer 126 of compare on the second surface 152 of elastomeric material 124 second adhesive 164 is put on second adhesive 164 more preferred.This is because second adhesive 164 is easy to penetrate in any residual treatment agent or oil that is retained on the elastomeric material 124.These residuals, if still be retained on the elastomeric material 124, thereby the combination of passing the possibility weakable adhesive is in time destroyed lamination.For example, the state if these residuals are kept perfectly, be used to form that lamination 120 bonding may be before the consumer buys product during this period of time in weaken.
When directly putting on helix adhesive 166 on the elastomeric material 124, high on the peel value of lamination 120 generally relative (promptly second) cover layer 126 in the spiral binder zone than it is put on.Term " peel value " refers to separates two cladding material 122 and 126 needed power as used herein.Higher peel value generally means leafing possibility lower in the use.
The 3rd adhesive 160 also can preferably be put on the inner surface 142 of first cover layer 122.Under the preferable case, the 3rd adhesive 160 is an elastic adhesive.Mode so that the above-mentioned reference second spiral binder pattern 166 is described preferably applies first adhesive 160 with spiral spray pattern 162, thereby forms than using the more discrete binding site 167a of linear spiral pattern.Need not theoretical proof, it is believed that major part first adhesive 160 of injection like this aligns at structure direction D.
The preferred second and the 3rd adhesive 160 and 164 is same elastic adhesives.With second and the preferred adhesive used of triple helical spray pattern 162 and 166 be the label produced by Findley AdhesiveCompany product as H2120.Under the preferable case, second and the addition of triple helical spray pattern 162 and 166 be about 4 to about 12 milligrams/square inch, more preferably 8 milligrams/square inch.
Elastomeric material 124 of the present invention is applicable to multiple disposable product, comprises sweat towel, bandage and comprises disposable diaper and the disposable clothing of incontinence article.Although the preferred embodiments of the present invention that describe below are only at the disposable clothing that comprises disposable diaper, apparent, application of the present invention has more than and is limited to those embodiment for the those skilled in the art in this area.
Referring to Fig. 5, disposable clothing 20 of the present invention comprise have proparea 26, the end section 41 in back zone 28 and the shelves district between proparea 26 and back zone 28 30; At least one pair of lateral plate 46 or 48 that the proparea 26 from end section 41 or the both sides of back zone 28 outwards laterally extend.At least lateral plate 46 or 48 the two one of comprise the elastomeric material 124 that outwards laterally extends from end section 41 both sides (showing Fig. 5).But end section 41 have transflective liquid top flat 24, link to each other with top flat can not transflective liquid egative film 22, the absorbent article core 25 between top flat 24 and egative film 22 (showing among Fig. 5).The confining force (RFH12H) of elastomeric material 124 after under 50% extensibility 12 hours is at least about 40 gram/inches, and elastomeric material 124 can also have other preferred extensibility characteristics of having described.
In the lateral plate at least one pair of can refer to a pair of coxopleure 46 or epimeron 48.In a preferred embodiment, disposable clothing 20 is disposable diapers, at least one pair of lateral plate comprises a pair of coxopleure 46 and a pair of epimeron 48 that is configured on the back zone 28 that is configured on the proparea 26, disposable clothing 20 also comprises the fastener 32 that engages lateral plate 46 and 48 respective edges, thereby constitutes two leg openings 34 and a waist opening 36.In a further advantageous embodiment, disposable clothing 20 herein is the banding pattern disposable diaper, and described at least one pair of lateral plate is an epimeron 48.
Fig. 5 has shown a preferred embodiment of disposable clothing of the present invention (being diaper 20).Diaper 20 comprise have proparea 26, the end section 41 in back zone 28 and the shelves district between proparea 26 and back zone 28 30.But end section 41 have transflective liquid top flat 24, link to each other with top flat can not transflective liquid egative film 22, the absorbent article core 25 between top flat 24 and egative film 22 (show among Fig. 5 but demonstration is arranged among Fig. 6).Diaper 20 also comprises the coxopleure 46 that the respective side edge of 26 end sections 41 from the proparea outwards laterally extends, the epimeron 48 that the respective side edge of 28 end sections 41 outwards laterally extends from the back zone.But having at least a pair of in preferred coxopleure and epimeron 46 or 48 is horizontal elastic stretching at least.Diaper 20 also comprises each joint fastener that outwards laterally extends 66 from coxopleure 46 and epimeron 48 respectively and the tearing sheet 31 that outwards laterally extends from each joint fastener 66.Authorize other preferred samples that disclose diaper 20 in the 5th, 569, No. 234 United States Patent (USP)s of Buell etc. on October 29th, 1996.
But have in paired coxopleure 46 and the epimeron 48 under the preferable case a pair of for elastic stretching, but the two all is an elastic stretching when more preferred.Term " can stretch " as used herein, and what describe is to a certain degree the material of can extending at least in one direction under the prerequisite of not breaking.Term " elasticity " and " but elastic stretching " are described is cancelled the back Stretch material of original dimension of having the ability to get back to substantially in the power of ductile material.This any being described as " can stretch " unless but material or assembly specialize and all be meant elastic stretching.Because lateral plate 46 and/or 48 allows diaper side to extend and shrinks, by making comfortable the putting on diaper and still can keep the comfortable suitability to health whole wearing in the process when diaper has held after draining refuse of wearer at first, the lateral plate 46 and/or 48 that then can stretch just can provide more comfort sense and to the suitability of health.
In a preferred embodiment, but coxopleure 46 and epimeron 48 laterally are being elastic stretching.In another embodiment, but coxopleure 46 and epimeron 48 horizontal and vertical all be elastic stretching.
Section 41 forms a continuous belt 38 around waist opening 36 at the bottom of coxopleure 46 and epimeron 48 and the part.Under the preferable case, in the proparea 26 and back zone 28 all have elastic waist belt 50.Diaper 20 also can have elastic leg 52 in addition.
Continuous belt 38 dynamically produces applying power when the user wears diaper, when accommodating the body excretes refuse, diaper 20 also can maintain the suitable position of wearer's body, thereby keep absorbent article core 25 to be close to the wearer, and the power that is produced in the waist DYNAMIC DISTRIBUTION, support and be unlikely to make absorbent article core 25 crimpings or twist into bundle thereby provide auxiliary absorbent article core 25.
Coxopleure 46 and epimeron 48 can be formed (be that they are not the assemblies that is fixed on the diaper 20 independent control, but form from one or more layers extension of multilayer diaper) by the black box of diaper 20.In a preferred embodiment, each coxopleure 46 and epimeron 48 are prodgers (what show among Fig. 6 is more clear) of end section 41.Under the preferable case, coxopleure 46 and epimeron 48 comprise at least one black box or continuous flaky material (for example low sheet 23 of the nonwoven shown in Fig. 7), and their constitute the part of end section 41 and extend to coxopleure 46 continuously and epimeron 48.
In a preferred embodiment, each joint fastener 66 all is the extension of corresponding coxopleure 46 and epimeron 48, perhaps is one of building block that is used at this place at least, or other any combinations of parts.Under the preferable case, each tear strip 31 also is at least one of the extension of re-spective engagement sheet 66 or its building block that is used for this place, or any other combining form of parts.
In addition, coxopleure 46 and epimeron 48 can be separated components (not shown in the diagram), and the two does not have any body component that constitutes end section 41 parts.By being connected with the lateral edges of end section, separating component just formed coxopleure and epimeron.
Diaper 20 also comprises the fastener 32 of the respective edges that engages coxopleure 46 and epimeron 48, thereby forms two leg openings 34 and a waist opening 36.Under the preferable case, coxopleure 46 and epimeron 48 are joined together, and more preferably form overlapping connected structure by joint fastener 66 in overlapping mode.In addition, the also available docking mode of coxopleure 46 and epimeron 48 engages (not shown).Can adopt any way of the coxopleure 46 that is suitable for certain material in this area and epimeron 48 to come in conjunction with fastener 32.Like this, sonic seal, heated sealant, pressurization in conjunction with, adhesive in conjunction with, sew up, from body in conjunction with and similar techniques all be suitable.Under the preferable case, joint fastener 66 couples together with the predetermined heat/pressure or the mode of combination of ultrasound, the power and the stress that produce on the diaper 20 in the use that these junctures can stand.
Fig. 6 is the sectional plan view of the diaper 20 of Fig. 5, and diaper 20 is in open and flat (i.e. the contraction that elasticity causes except in the lateral plate 46 and 48 that remains relaxation state is unfolded), top flat 24 state before not linking together with fastener 32 towards reader and lateral plate 46 and 48 that shrinks.Diaper 20 comprises proparea 26, the back zone 28 relative with the proparea, the shelves district 30 between proparea 26 and back zone 28 and limits the outer rim of diaper 20 or the periphery at edge, and wherein side is labeled as 150, and end limit or waist limit are labeled as 152.Top flat 24 comprise diaper 20 towards body surface, wearer's body is in use pressed close on this surface.Egative film 26 comprises the outward surface of diaper 20, and this surface is away from wearer's health.Diaper 20 comprises end section 41, but end section 41 have transflective liquid top flat 24, be connected with top flat can not transflective liquid egative film 26, the absorbent article core 25 between top flat 24 and egative film 26.Diaper 20 also comprises coxopleure 46 and epimeron 48, elastic leg closing in 52 and the elastic waist belt 50 that outwards laterally extends from end section 41.The length and width size of top flat 24 and egative film 26 is usually all greater than the length and width size of absorbent article core 25.Thereby top flat 24 and egative film 26 extend the periphery that the edge of absorbent article core 25 forms diaper 20.Egative film 26 that can not transflective liquid preferably include can not transflective liquid plastic sheeting 68, plastic sheeting is connecting egative film non-woven fleece 23.
Although top flat 24, egative film 26 and absorbent article core 25 combinings become multiple known structure, all described exemplary end segment structure in following patent: the title of authorizing Kenneth B.Buell on January 14th, 1975 is the 3rd of " the collapsible side part of disposable diaper " the, 860, No. 003 United States Patent (USP), the title of authorizing Kenneth B.Buell etc. on September 29th, 1992 is the 5th of " absorbent device that has the dynamic elasticity waist spare that is comprising prefabricated elastic bending connector " the, 151, No. 092 United States Patent (USP)s.
Diaper 20 also comprises two center lines, longitudinal centre line 100 and cross central line 110.Term " vertically " refers to line, axle or the direction of align with perpendicular substantially (for example substantially parallel) on diaper 20 as used herein, and this perpendicular is divided into left and right sides two parts with the wearer who stands when putting on diaper 20.Term " laterally " refers to line, axle or the direction that is positioned at the diaper plane as used herein, and it is basically perpendicular to vertical line (vertical line is divided into front and back two parts with wearer's body).Diaper 20 and wherein assembly material also comprise towards wearers skin towards body surface and with towards the relative outward surface of body surface.
Fig. 7 is the profile along the preferred embodiment of the hatching line 7-7 taking-up of Fig. 6.But diaper 20 comprise top flat 24 with transflective liquid, link to each other with top flat can not transflective liquid egative film 26, the end section 41 of the absorbent article core 25 between top flat 24 and egative film 26.Diaper also comprises respectively from the coxopleure 46 of the end section outside horizontal expansion in 41 both sides and elastic leg and closes up 52.Although Fig. 7 has only drawn the structure of coxopleure 46, preferred epimeron 48 has similar structures.Under the preferable case, end section 41 also has absorption/Distribution Layer 82 and/or absorption/distribution core 84 between top flat 24 and absorbent article core 25.Each coxopleure 46 is to be overlapped to form by the extension 72 of flap 56, elastic component 70 and egative film non-woven fleece 74 threes.
Absorbent article core 25 can be any compressible, comfortable, absorption piece of not stimulating wearers skin, and can absorb and keep liquid and other body excretes refuses such as urine.Absorbent article core 25 can be made multiple size and dimension (for example rectangle, hourglass shape, T shape, asymmetric shape etc.), and can for example be commonly called the pulverizing wood pulp of gas felt by the multiple material manufacturing that is usually used in the fluid-absorbing of disposable diaper and other absorbent devices.Other absorbing materials that are fit to comprise wrinkling fiberfill; The condensate that melts and sprays that comprises common adult; The cellulose fibre of chemicosolidifying, modification or commissure; The gauze material that comprises tulle volume and tulle lamination; The moisture absorption foam; The moisture absorption sponge; The high hydroscopicity condensate; Sucting wet gel material; Perhaps any similar material or multiple mixtures of material.
The structure of absorbent article core 25 and structure can be that diversified (for example absorbent article core 25 can have a plurality of caliper zones, hydrophilic gradient, high moisture absorption gradient or low average density and the quantitative moisture absorption of harmonic(-)mean district; Perhaps can comprise one or more synusia or structure).And the size of absorbent article core and wettability power also are diversified for all kinds of crowds that adapt to from the baby to the adult.Yet the total absorptivity of absorbent article core should be consistent with the design contents and the intended use of diaper 20.
The preferred embodiment of diaper 20 comprises asymmetric, modification hourglass shape absorbent article core 25, absorbent article core has earflap in front waist region 26 and back waist region 28 places.Other sample structures that can be used as absorbent article core 25 of widely having been accepted and obtained business success have description in following patent: authorized 4th, 610, No. 678 United States Patent (USP)s of the title of Weisman etc. for " high-density absorbent structure " on September 9th, 1986; Authorized 4th, 6773, No. 402 United States Patent (USP)s of the title of Weisman etc. on June 16th, 1987 for " absorbent device that comprises double-deck core body "; Authorized 4th, 888, No. 231 United States Patent (USP)s of the title of Angstadt on December 19th, 1989 for " comprising the absorbent article core of spreading bisque "; Authorized 4th, 834, No. 735 United States Patent (USP)s of the title of Alemany etc. on May 30th, 1989 for " the high-density absorbent spare that comprises low-density and low quantitative uptake zone ".
End section 41 also can comprise absorption/distribution core 84 that the chemicosolidifying fibrous material is made on absorbent article core 25, thereby constitutes the twin-core body structure.Disclose preferred twin-core body structure in the following patent: the title of authorizing Alemany etc. on August 10th, 1993 is the 5th, 234, No. 423 United States Patent (USP)s of " have elastic waist feature and strengthen the absorbent device of hydroscopicity "; Authorized Young on September 15th, 1992, the title of LaVon and Taylor is the 5th, 147, No. 345 United States Patent (USP)s of " highly efficient absorbent article that is used for incontinence ".In a preferred embodiment, absorption/distribution core 84 is made by the chemicosolidifying cellulosic fibre material, and this material can be buied from Weyerhaeuser Co. (U.S.A.), and trade mark is CMC.
More preferably under the situation, end section 22 also comprises the absorption/Distribution Layer 82 between top flat 24 and absorption/distribution core 84 as shown in Figure 7.Absorption/Distribution Layer 82 is used to help to reduce the possibility of top flat 24 surface moisture.Absorption/Distribution Layer 82 is preferably made by carded, resin-bonded high protuberance (hiloft) non-woven material, Polymer Group for example, Inc.North America (Landisiville, NewJersey, U.S.A.) the FT-6860 type that is numbered product, it is to be made by the polyethylene terephthalate fiber of 6 dtexs, and it quantitatively is approximately 43g/m 2
Top flat 24 is preferably submissive and non-stimulated to wearers skin.And top flat 24 is to allow liquid (for example urine) but the synusia that penetrates the transflective liquid of its thickness direction.The material that is suitable for making top flat 24 has a variety of, for example nonwoven and knit material; Polymeric material such as porose molded thermoplastic film, apertured plastic films and hydroforming thermoplastic film; Porous foam; Reticulated polymer foam; Weblike heat plastic films and thermoplasticity scrim.Nonwoven that is suitable for and textile material can be natural fiber (for example wood or cotton fiber), synthetic fibers (for example polymer fiber such as polyester, polyethylene or polypropylene fibre) or natural and mixtures synthetic fibers.Top flat 24 is preferably made by hydrophobic material, so that make wearers skin and the liquid that sees through top flat 24 and be contained in the absorbent article core 25 isolate (promptly preventing to bleed back).If top flat 24 is made by hydrophobic material, then the upper surface of top flat 24 is treated to hydrophilic so that liquid sees through top flat quickly at least.This has just reduced the body excretes refuse is not to penetrate top flat 24 and absorbed by absorbent article core 25 but overflow the possibility of top flat 24.Can make it present hydrophily by handling top flat 24 with surfactant.The appropriate method of handling top flat 24 with surfactant comprises surfactant is ejected on the material of top flat 24 and with material and immerses in the surfactant.About this processing method and hydrophilic going through referring to following patent: the title of authorizing Reising etc. on January 29th, 1991 is the 4th of " absorbent device that comprises multilayer moisture absorption sheet " the, 988, No. 344 United States Patent (USP)s and the title of authorizing Reising on January 29th, 1991 are the 4th of " absorbent device that comprises quick absorbent article core " the, 988, No. 345 United States Patent (USP)s.
In a preferred embodiment, top flat 24 is nonwoven webs, and this wire side can reduce the tendency of surface moisture and finally be convenient to preserve the urine that absorbent article core 25 absorbs after getting wet makes its skin away from the user.A kind of preference sheet material is the careless wire side of hot adhesion, can be from Fiberweb North America, and (Simpsonville, South Carolina U.S.A.) buys Inc., is numbered P-8.Another kind of preferred top sheet materials can be from Havix Co., and Japan buys, and is numbered S-2355.This material is a double-layer composite material, uses the careless and air-flow technology of passing to be made by the bicomponent fibre of two kinds of synthetic surface Treatment with activating agent.Another kind of preferred top sheet materials is the careless wire side of hot adhesion, can be from AmocoFabrics, and (Gronau Germany) buys Inc., is numbered Profleece Style040018007.
Another kind of preferred top flat 24 includes the hole forming film.Porose form film is preferred for top flat 24, because it allows the body excretes refuse to see through and is non-hygroscopic, and can reduce the possibility that allow liquids rehumidifies wearers skin.Like this, keep dry, thereby reduce the damp of health and bring more comfortable sensation for the wearer with the form film surface of Body contact.The form film that is fit to has been described: authorized 3rd, 929, No. 135 United States Patent (USP)s of the title of Thompson on December 30th, 1975 for " containing taper absorbent structure capillaceous " in following patent; Authorize 4th, 324, No. 246 United States Patent (USP)s of the title of Mullane etc. April 13 nineteen eighty-two for " disposable absorbent article " with anti-spot top flat; Authorize 4th, 342, No. 314 United States Patent (USP)s of the title of Radel etc. August 3 nineteen eighty-two for " the elastoplast wire side that presents the fibrid characteristic "; The title of authorizing Ahr etc. on July 31st, 1984 is the 4th of " the three-dimensional plastic wire side that can macroscopic view extends that presents mat surface and class cotton sense of touch " the, 463, No. 045 United States Patent (USP) and the title of authorizing Baird on April 9th, 1991 are the 5th of " multilayer polymeric body thin film " the, 006, No. 394 United States Patent (USP).
In a preferred embodiment, egative film 22 comprise can not transflective liquid film 68, for example shown in Figure 7.Film 68 that can not transflective liquid comprises towards body surface and outward surface.Film 68 that can not transflective liquid is preferably can not transflective liquid (for example urine) and preferably made by plastic sheeting as thin as a wafer.Yet preferred situation is that plastic sheeting allows steam to appear diaper 20.In a preferred embodiment, microporous polyethylene film is used to make plastic sheeting 68.The microporous polyethylene film that is fit to is by MitsuiToatsu Chemicals, Inc., and Nagoya, Japan makes, and trade mark is Espoir No.
In a preferred embodiment, film 68 (being the plastic sheeting 68 shown in Fig. 6) that can not transflective liquid is distributed in proparea 26, back zone 28 and shelves district 30.Under the preferable case, plastic sheeting 68 has non-unified width, so that the part in shelves district 30 forms first district 94 and form second district 96 in the part of proparea 26 or back zone 28 at least.The width in second district 96 is less than the width in first district 94, and plastic sheeting 68 can not extend into coxopleure 46 or epimeron 48 like this.In a preferred embodiment, the transverse width LW of plastic sheeting 68 diminishes gradually towards waist limit 152, as shown in Figure 6.
The material that is suitable for making plastic sheeting 68 is that thickness is about 0.012mm (0.5 Mill) to the thermoplastic film of (2.0 Mill) approximately O.051mm, is preferably made by polyethylene or polypropylene.Under the preferable case, the quantitative of plastic sheeting is about 5g/m 2To about 35g/m 2Yet, should be mentioned in that be other be fit to can not transflective liquid flexible material also can be used.Term " flexibility " is described as used herein is submissive and can adapts to the general wearer's bodily form and the material of profile at any time.
Under the preferable case, egative film 22 also comprises nonwoven web 23, and it combines with the outward surface of plastic sheeting 68 and forms lamination (being egative film 22).Nonwoven web (or egative film non-woven fleece) 23 is positioned at the outermost layer of diaper 20 and is covered with part diaper outermost layer at least.In a preferred embodiment, nonwoven web 23 has almost covered all diapers 20 outermost layers.Can adopt any suitable laminating type as known in the art that nonwoven web 23 and plastic sheeting 68 are combined.For example can use evenly continuous adhesive phase; The adhesive phase of fixed pattern; The adhesive of discrete straight line, helix or some form is fixed together nonwoven web 23 and plastic sheeting 68.The adhesive that is fit to comprises Nitta Findley Co., Ltd., Osaka, hotmelt that is numbered H-2128 and H.B.Fuller Japan Co. that Japan produces, Ltd., Osaka, the hotmelt that is numbered JM-6064 that Japan produces.
In a preferred embodiment, nonwoven web 23 is the carded nonwoven web, Havix Co. for example, LTD., Gifu, the product that is numbered E-2341 that Japan produces.Nonwoven web 23 is to be made by polyethylene (PE) and polyethylene terephthalate (PET) bicomponent fibre.The ratio of PE/PET is about 40/60.The PE/PET bicomponent fibre is of a size of 2d * 51mm.Another preferred carded nonwoven web is Chisso Corp., Osaka, the product of Japan.Nonwoven outer covering piece 23 also is to be made by polyethylene (PE) and polyethylene terephthalate (PET) bicomponent fibre.The ratio of PE/PET is about 30/70.
In a further advantageous embodiment, nonwoven web is spunbond nonwoven web, for example can be from MitsuiPetrochemical Industries, and Ltd., Tokyo, Japan buys.Nonwoven web is to be made by polyethylene (PE) and polypropylene (PP) bicomponent fibre.The ratio of PE/PP is about 80/20.The thickness of PE/PP bicomponent fibre approximately is 2.3d.
Egative film 22 is preferably adjacent with the outward surface of absorbent article core 25 and preferably with any suitable adhering mode as known in the art the two is connected.For example, can adopt evenly continuous adhesive phase; The adhesive phase of forming pattern; The adhesive of discrete straight line, helix or some form is fixed together egative film 22 and absorbent article core 25.Verified H.B.Fuller Company of St.Paul, the trade mark that Minnesot produces is that the HL-1358J product is satisfactory.The title of authorizing Minetola etc. on March 4th, 1986 is for disclosing the example of the adherence method that is fit in the 4th, 573, No. 986 United States Patent (USP)s of " disposable refuse accommodating laundry ", this method has comprised the netted adhesive filament of opening.Authorize Sprague on October 7th, 1975, Jr. the 3rd, 911, authorized the 4th of Ziecker etc. on November 22nd, No. 173 1,785, No. 996 and authorized the 4th, 842 of Werenicz on June 27th, 1989, in No. 666 United States Patent (USP)s with the formal specification of instrument and method another kind of suitable adherence method, this method is comprising and is bending to spiral helicine adhesive filament line.In addition, adherence method can comprise add thermal, pressurization combination, combination of ultrasound, dynamic mechanically in conjunction with or other the suitable adherence methods or the combination of these adherence methods as known in the art.
In another embodiment, provide bigger draftability in order to give proparea 26 and back zone 28, absorbent article core 25 does not combine with egative film 22 and/or top flat 24.
Diaper 20 preferably also comprises elastic leg and closes up 52, is used to improve the ability of receiving fluids and other body excretes refuses.Elastic leg closes up and 52 can comprise the embodiment that several different minimizing body excretes refuses leak in leg zone (leg cuff can be and be also referred to as shank band, flank, flap or elasticity sometimes close up).United States Patent (USP) 3,860,003 has described a kind of disposable diaper, and this diaper has contractile leg opening, has constituted elastic leg closing in (sealing is closed up) thereby leg opening comprises flank and one or more elastic component.The title of authorizing March 20 nineteen ninety such as Aziz etc. is the 4th of " disposable absorbent article that has elasticized flaps " the, 909, No. 803 United States Patent (USP) has been described the disposable diaper that has " uprightly " elasticity flap (choked flow closing in), and this can improve the carrying capacity of leg area.The title of authorizing Lawson on September 22nd, 1987 is the 4th of " having two absorbent devices that close up " the, 695, No. 278 United States Patent (USP)s and the title of authorizing Dragoo on January 3rd, 1989 are the 4th of " having the two absorbent devices that close up of anti-side leakage " the, described in 795, No. 454 United States Patent (USP)s and had the two disposable diapers that close up that comprise that sealing is closed up and choked flow is closed up.The title of authorizing Buell on November 3rd, 1987 has being used for liquid containing disposable diaper or incontinence article therein of lateral margin leakproof groove for disclosing in the 4th, 704, No. 115 United States Patent (USP)s of " disposable refuse accommodating laundry ".
Although each elastic leg closing in 52 can be configured to be similar to above-mentioned shank band, flank, choked flow closing in or elasticity and close up, but preferably each elastic leg closing in 52 comprises inner choked flow closing in 54, choked flow is closed up and is comprised as the 4th of above-mentioned reference, choked flow flap 56 and separator 58 (as illustrated in Figures 5 and 6) described in 909, No. 803 United States Patent (USP)s.In a preferred embodiment, elastic leg close up 52 also can comprise in addition have one or many be positioned at the close up elastic packing of elastic strands 64 (as shown in Figure 6) in 54 outsides of choked flow and close up 62, as the above referenced the 4th, 695, No. 278 and the 4th, 795, the description in No. 454 United States Patent (USP)s.
Diaper 20 preferably comprises that also improvement is to the suitability of health and the elastic waist belt 50 of carrying capacity.Elastic waist belt 50 is a part or zones of diaper 20, and it can be used to elasticity extension and contraction so that dynamic fit wearer's waist.Elastic waist belt 50 preferably from least one outside longitudinal extension in waist limit of absorbent article core 25 and form diaper 20 to small part end limit.Although other diapers can have only an elastic waist belt, preferred diaper 20 has 50, one of two elastic waist belts to be positioned at back zone 28 and another is positioned at proparea 26.The structural form of elastic waist belt 50 can have a variety of, be included in the title of authorizing Kievit etc. on May 7th, 1985 and be the 5th of the 4th, 515, No. 595 United States Patent (USP)s of the disposable diaper of elastic shrinkage waistband " but have " and the above-mentioned Buell of authorizing, form described in 151, No. 092 patents.
Waistband 50 can comprise by the material of " prestrain " or " mechanical prestrain " (promptly bear to a certain degree local mechanical stretches so that permanently elongate material).Can use depth embossing technology as known in the art to apply prestrain to material.In addition, also can directly use cumulative mechanical stretching system prestrain material, this title of authorizing Buell etc. on July 19th, 1994 has description in the 5th, 330, No. 458 United States Patent (USP)s of " absorbent device that has the elastic component that is comprising mechanical prestrain district ".This material can be got back to its tension not substantially, and this has just formed the extending zero strain expanded material that reaches incipient extension point at least.The example of zero strain material is disclosed in following patent: the 2nd, 075, No. 189 United States Patent (USP)s authorizing Galligan March 30 nineteen thirty-seven; Authorized the 3rd, 025, No. 199 United States Patent (USP)s of Harwood on March 13rd, 1962; Respectively at authorizing the 4th, 107,364 and 4,209 of Sisson, No. 563 United States Patent (USP)s on August 15th, 1978 and on June 24th, 1980; Authorize the 4th, 834, No. 741 United States Patent (USP)s of Sabee on May 30th, 1989 and authorized the 5th, 151, No. 092 United States Patent (USP) of Buell etc. on September 29th, 1992.
Referring to Fig. 7, at least before and epimeron among have one (being the coxopleure 46 in the present embodiment) to comprise elastic component 70 of the present invention.Elastic component 70 is made of elastomeric material 124, and this member preferably laterally stretches out from the both sides of end section 41 and produces optimum the maintenance (or support) power by the waist the wearer the good suitability to health is provided.Preferred elastomeric materials 124 is ductile at least in one direction, preferably can produce lateral vector measure one's own ability generate on the direction of component keep (supports) power, this power can prevent diaper 20 from wearer's position come off, sagging or landing is also unlikely reins in out red seal in wearers skin.In a preferred embodiment, coxopleure 46 and epimeron 48 all comprise elastomeric material 124.
The elastic component 70 that constitutes by elastomeric material 124 (in Fig. 7, not showing) at least with the nonwoven web 72 and 74 of coxopleure 46 and epimeron 48 in one combine effectively, thereby but allow elastic component 70 elastic stretching at least in the horizontal.In a preferred embodiment, when being in substantially tension (zero strain) state, elastic component 70 combines effectively with nonwoven web 72 and 74, can with the two one of fix, preferably all be fixed together with the two.
Can use interruption combination or basic combination continuously that elastic component 70 is combined effectively with nonwoven web 72 and 74.To refer to wherein each synusia be the lamination wire side that the point with discrete interval combines to the lamination wire side of term " interruption " combination each other as used herein, is meant that perhaps its each synusia is at the unconjugated each other lamination wire side in discrete interval district.Otherwise " substantially repeatedly continuous " refers to wherein in conjunction with the lamination wire side that each synusia is the basic lamination wire side of combination continuously in the whole interface district.Because following situation is comparatively preferred, the stretching lamination is combined on the overall region of stretching lamination or the most of zone so that non-resilient wire side (being nonwoven web 72 and 74) elongates or unlikelyly during tractive cause fracture; The synusia of stretching lamination preferably combines to increase progressively the mode that all synusia that can keep the stretching lamination after the mechanical stretching operation are attached together to each other closely, so use elastic parts and other synusia substantially continuous combine of adhesive with the stretching lamination.In specific preferred embodiment, selected adhesive is being about 0.00116g/cm quantitatively 2(0.0075g/in 2) spiral pattern (the 3rd, 911, No. 173 United States Patent (USP)s (Sprague, Jr.) and show in the 4th, 842, No. 666 United States Patent (USP)s (Werenicz)) for example.The width of helix is about 1.9cm (0.75in), almost is being close between two lines or overlapping a little to some extent (less than 2mm).Adhesive is preferably the adhesive such as the product of buying from FindleyAdhesives that is numbered H2120.Perhaps, the elastic parts of stretching lamination and any other parts can adopt add thermal, pressurization combination, combination of ultrasound, dynamic mechanically in conjunction with or any other method interruption as known in the art or combine continuously.
Elastic component 70 by effectively with nonwoven web 72 at least and 74 after one of them combines, the stretching lamination that finally synthesizes to small part will bear the mechanical stretching that is enough to forever elongate non-resilient lamination then, for example nonwoven web 72 and 74 so non-resilient parts.Synthetic then stretching lamination is allowed to get back to its unstrained substantially state.At least in coxopleure 46 and the epimeron 48 a pair of preferred the two all from " zero strain " stretching lamination, form (perhaps, elastic component 70 can by effectively tensioning state in conjunction with and bear mechanical stretching; Although elephant " zero strain " stretching lamination is so not preferred for this).Term " zero strain " stretching lamination refers to the lamination that is made of at least two material synusia as used herein, and the material synusia is fixed together along a part that has the surface to each other at (" the zero strain ") state that substantially stretches; It is by stretching and elastomeric material (tension force that promptly applies is got back to its not tensioning size after cancelling substantially) constitutes that a synusia is wherein arranged, and another synusia is tractile (but not requiring it must is flexible), so that second synusia can not be got back to its original undeformed state behind the tension force that permanently elongates so that cancel to apply at least to a certain extent fully when being stretched.Thereby elasticity is extended to its initial drawing point at least on the incipient extension direction but final stretching lamination shows as.The particularly preferred method and apparatus that is used to prepare the stretching lamination has adopted the engagement corrugation rolls to come each parts of mechanical stretching.Particularly preferred method and apparatus is disclosed in the following patent: the 5th, 167, No. 897 United States Patent (USP)s authorizing Weber etc. on December 1st, 1992; Authorize the 5th, 156, No. 793 United States Patent (USP)s of Buell etc. October 20 nineteen ninety and authorized the 5th, 143, No. 679 United States Patent (USP)s of Weber etc. on September 1st, 1992.What should be mentioned in that is also to disclose the method that is equal to these United States Patent (USP)s in H6-505681, H6-505408 and H6-505446 Japan Patent.
Use the adhesive 76 shown in Fig. 7 preferably elastic component 70 is attached to can not the respective edges 78 of transflective liquid film (being plastic sheeting 68) on, more preferably situation then be directly to fix.The adhesive 76 preferred forms that adopt droplet.In a preferred embodiment, adhesive 76 is to have noncrystal and flexible adhesives crystallographic component.This preferred adhesive is the H9224 type product of being produced by Findley Adhesive Company.In addition, can adopt any other combination as known in the art that elastic component 70 is attached on the respective edges 78 of plastic sheeting 68, comprise the combination that adds thermal, pressurization combination, combination of ultrasound, dynamic mechanically combination or these adhering mode.
In a preferred embodiment, the preferred embodiment shown in Fig. 6 for example, elastic component 70 combines with second district 96, and this sector width is less than the width in first district 94.Elastic component 70 preferably combines with the outward surface 77 of plastic sheeting 68 respective edges 78, as shown in Figure 7.In another embodiment, elastic component 70 can with the combining of plastic sheeting 68 respective edges 78 towards body surface 79 (not shown).
Certainly, example described herein and embodiment only are the usefulness of explanation, and the those skilled in the art in this area can make numerous variations or change not departing from the scope of the present invention.

Claims (20)

1. but one kind at least at the elastic component of a direction elastic stretching, comprising:
Have first surface and with the elastomeric material of first surface opposing second surface; And
First cover layer that combines with the first surface of elastomeric material;
Wherein, elastomeric material confining force (RFH12H) after under 50% extensibility 12 hours is about at least 40g/in.
2. elastic component as claimed in claim 1 is characterized in that, also comprises second cover layer that combines with the second surface of elastomeric material.
3. elastic component as claimed in claim 1 is characterized in that, the form of elastomeric material is scrim, perforated films or strand.
4. elastic component as claimed in claim 1 is characterized in that, elastomeric material has 50% extensibility following second round of restoring force (SCRF50%) from about 40g/in to about 130g/in.
5. elastic component as claimed in claim 1, it is characterized in that, elastomeric material has at least approximately 100% tensile force of following period 1 of extensibility (FCEF100%) of 100g/in, and approximately 160g/in is to 200% tensile force of following period 1 of extensibility (FCEF200%) between about 320g/in.
6. elastic component as claimed in claim 1 is characterized in that, first cover layer is a nonwoven web.
7. disposable clothing comprises:
End section with proparea, back zone and the shelves district between proparea and back zone, but end section have transflective liquid top flat, link to each other with top flat can not transflective liquid egative film and the absorbent article core between top flat and egative film;
At least one pair of lateral plate from the outside horizontal expansion in proparea or back zone of end section; And
At least one pair of lateral plate comprises from the elastomeric material of the outside horizontal expansion of end section;
Wherein, elastomeric material confining force (RFH12H) after under 50% extensibility 12 hours is about at least 40g/in.
8. disposable clothing as claimed in claim 7 is characterized in that, at least one pair of lateral plate is a pair of epimeron that is configured in a pair of coxopleure in proparea or is configured in the back zone.
9. disposable clothing as claimed in claim 7 is characterized in that, at least one pair of lateral plate is formed by " zero strain " stretching lamination.
10. disposable clothing as claimed in claim 7, it is characterized in that, at least one pair of lateral plate comprises a pair of coxopleure that is configured in the proparea and a pair of epimeron that is configured in the back zone, disposable clothing also comprises the fastener that is connected with the lateral plate respective edges respectively, thereby forms two leg openings and a waist opening.
11. disposable clothing as claimed in claim 7 is characterized in that, elastomeric material has 50% extensibility following second round of restoring force (SCRF50%) from about 40g/in to about 130g/in.
12. disposable clothing as claimed in claim 7, it is characterized in that, elastomeric material has at least approximately 100% tensile force of following period 1 of extensibility (FCEF100%) of 100g/in, and approximately 160g/in is to 200% tensile force of following period 1 of extensibility (FCEF200%) between about 320g/in.
13. disposable clothing as claimed in claim 7 is characterized in that, elastomeric material has at least 600% breakaway poing extensibility (EB).
14. disposable clothing as claimed in claim 7 is characterized in that, elastomeric material is the elasticity scrim.
15. disposable clothing as claimed in claim 7 is characterized in that, elastomeric material is a perforated films.
16. disposable clothing as claimed in claim 7 is characterized in that, the elasticity scrim has about 16 hours breaking resistance (TR).
17. disposable clothing as claimed in claim 7 is characterized in that, in coxopleure and the epimeron comprises from the continuous extended continuous flaky material of end section at least.
18. disposable clothing as claimed in claim 17 is characterized in that, continuous flaky material is the egative film non-woven material.
19. disposable clothing as claimed in claim 7 is characterized in that, elastomeric material combines with section edge, the end.
20. disposable clothing as claimed in claim 10 is characterized in that, thereby corresponding coxopleure and epimeron engage with overlap mode and form overlapping seam construction.
CN98813932A 1998-03-26 1998-03-26 Elastic member and dispoable garment having improved fitness to body during entire use Pending CN1291133A (en)

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CN1297393C (en) * 2001-11-05 2007-01-31 宝洁公司 Variable stretch composites and methods of making the composite
CN1297392C (en) * 2001-11-05 2007-01-31 宝洁公司 Stretch composites and methods of making the composite
CN101031264B (en) * 2004-09-30 2011-04-06 金伯利—克拉克环球有限公司 Absorbent garment with color changing fit indicator

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CN109803822A (en) * 2016-10-31 2019-05-24 金伯利-克拉克环球有限公司 The method that recessive Elastic olefin film composites and preparation combine its absorbent article

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Publication number Priority date Publication date Assignee Title
CN1297393C (en) * 2001-11-05 2007-01-31 宝洁公司 Variable stretch composites and methods of making the composite
CN1297392C (en) * 2001-11-05 2007-01-31 宝洁公司 Stretch composites and methods of making the composite
CN101031264B (en) * 2004-09-30 2011-04-06 金伯利—克拉克环球有限公司 Absorbent garment with color changing fit indicator

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EP1089873A1 (en) 2001-04-11
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TW504380B (en) 2002-10-01
AU6774798A (en) 1999-10-18
AR023019A1 (en) 2002-09-04
KR20010034663A (en) 2001-04-25
HUP0101410A3 (en) 2001-10-29
WO1999048680A8 (en) 2001-02-22
CA2325696A1 (en) 1999-09-30
IL138234A0 (en) 2001-10-31
TR200002754T2 (en) 2000-12-21
PE20000536A1 (en) 2000-08-04
HUP0101410A2 (en) 2001-09-28
BR9815767A (en) 2000-11-21

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