CN104271098A - Outer cover assembly and disposable absorbent article - Google Patents

Outer cover assembly and disposable absorbent article Download PDF

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Publication number
CN104271098A
CN104271098A CN201280073040.8A CN201280073040A CN104271098A CN 104271098 A CN104271098 A CN 104271098A CN 201280073040 A CN201280073040 A CN 201280073040A CN 104271098 A CN104271098 A CN 104271098A
Authority
CN
China
Prior art keywords
layer
cover member
opening
nonwoven layers
intermediate layer
Prior art date
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.)
Granted
Application number
CN201280073040.8A
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Chinese (zh)
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CN104271098B (en
Inventor
R·帕斯夸莱
F·斯皮内利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aishirui Health And Health Co Ltd
Original Assignee
Sca卫生用品公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Publication of CN104271098A publication Critical patent/CN104271098A/en
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Publication of CN104271098B publication Critical patent/CN104271098B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • 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
    • A61F13/51—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 outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51456—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties
    • A61F13/51458—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties being air-pervious or breathable
    • A61F13/5146—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties being air-pervious or breathable having apertures of perforations
    • 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
    • A61F13/51—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 outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
    • A61F13/51478—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being a laminate, e.g. multi-layered or with several layers
    • A61F13/5148—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being a laminate, e.g. multi-layered or with several layers having an impervious inner layer and a cloth-like outer layer
    • 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
    • A61F13/51—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 outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
    • A61F13/51484—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being inhomogeneous in the plane of the sheet, i.e. having zones of different properties or structures
    • 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
    • A61F13/51—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 outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51496—Backsheet, i.e. the impermeable cover or layer furthest from the skin having visual effects
    • 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
    • A61F13/84—Accessories, not otherwise provided for, for absorbent pads
    • A61F2013/8497—Accessories, not otherwise provided for, for absorbent pads having decorations or indicia means

Landscapes

  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

The present application relates to an outer cover assembly (20) for a disposable absorbent article. The outer cover assembly (20) extends in a longitudinal direction (Y) and a transverse direction (X) and has a thickness direction (Z) extending perpendicular to the longitudinal direction (X) and the transverse direction (Y). The outer cover assembly (20) comprises at least a first, nonwoven layer (50), a second, intermediate layer (60) and an inner, liquid-impermeable film layer (80) layered in this order in the thickness direction (Z), the inner, liquid-impermeable film layer ( 80 ) being provided on its side facing the second, intermediate layer (60) with at least one graphic (90), which has an extension in the longitudinal direction (Y) and the transverse direction (X). Either the first, nonwoven. layer (50) or the second, intermediate layer (60) is provided, with at least one opening (70) extending in the area of the graphic (90) in the longitudinal direction (Y) and the transverse direction (X) and over at least a part of the graphic (90). The other layer of the first, nonwoven layer and the second, intermediate layer without the opening has an, optical transmittance at least in the area covering the at least part of the graphic such that the at least part of the graphic is visible through the other layer. The present application also relates to a disposable absorbent article (10), such as a diaper, incontinence pant or sanitary napkin, comprising an outer cover assembly (20) as disclosed.

Description

Cover member and disposable absorbent article
Technical field
The present invention relates to a kind of cover member being provided with figure for disposable absorbent article.In addition, the present invention relates to a kind of disposable absorbent article such as diaper, incontinence pant or sanitary towel, there is the cover member being provided with figure.
Background technology
This disposable absorbent article is the article that adjacent health is dressed, and for holding and absorbing bodily secretions such as urine, blood, feces and antiperspirant.Typical disposable absorbent article comprises absorbent cores, absorbent cores be configured in the interior top flat that is suitable in the face of and typically contacts user skin and for prevent by absorbent cores between the enclosing cover layer that leaks out from article of the waste liquid that absorbs.The interior top flat of absorbent commodity be typically fluid permeable with allow bodily waste through in case absorb by absorbent cores.
As time goes by, disposable absorbent article is developed further continuously and is usually provided with the multi-part outer housing with various different material and layer now.Multi-part outer housing is also commonly called egative film or cover member.By utilizing some combination of material and layer, provide high performance cover member with regard to flexibility, fabric similarity, liquid impermeability and breathability etc.Therefore, this disposable absorbent article is now the product of high complexity and is made up of a large amount of parts that must use with high speed in process of production and assemble.
For these multi-part outer housings, be usually intended to comprise from the visible printed pattern of exterior such as letter, word image and/or numeral etc.By utilizing printed pattern, diaper becomes more attractive in appearance joyful and also more as underwear, figure also can be user or article is fastened on user nursing staff with it provides vision to assist user.Unfortunately, the various material in multi-part outer housing and the existence of layer make to be difficult to show printed pattern in clear and distinct mode and are easy to visual discrimination to make them.
Some trials are carried out to realize this object.Such as in GB2293573, disclose and there is thin layer and outer field egative film.Thin layer is provided with the color different from the skin of egative film, and skin is transparent further in some region.This just makes the color through the visible thin film of outer field transparent region.Heating is subject to and pressure obtains outer field transparent region by making the respective regions of opaque nonwoven layers, thus fibers melt in these regions and form filmy structure.
EP1738729 discloses a kind of enclosing cover layer laminate, has the second layer of the first film layer of tape label, preferably nonwoven layers and is also preferably the third layer of nonwoven layers.Third layer is as landing area and be less than the second layer.In this example, by fully translucent in combination, these two nonwoven layers are applicable to the visibility of the labelling increased on thin-film material.
Prior art is known provides the outer nonwoven layer of the egative film with printed pattern.But the printing quality on the nonwoven type on absorbent commodity is not too clear and can not press figure and accompanying drawing, wherein need clearly lines or complete panoptic region so that the aesthetic effect needed for obtaining.Therefore, inner film layer is used to be can be printed onto it with the photo of gem-pure lines or accompanying drawing for the advantage of printing.In outside nonwoven layers, due to the structure of layer, the accompanying drawing of printing or photo will have fuzzy lines and unsharp region.If need lines clearly as line of text, therefore not use outer nonwoven layer.
EP1078620 and US7214849 discloses the possibility how increasing figure visibility.These documents disclose the absorbent commodity with the extra printed sheet be clipped between bilayer.Extra printed sheet is preferably less than skin, and this makes to form printed sheet with low cost.
About the configuration that other is known, JP-A-2002-272783 discloses to be had with the diaper of two nonwoven layers with the external module of configuration elastomeric element therebetween.In addition, pattern or figure can be arranged on the egative film that is configured on inside external module and this figure intention is in sight through two nonwoven layers.But in this configuration, the visibility of figure often decreases.
US2005/0131366A1 discloses a kind of absorbent commodity with decoration element or figure.In the publication, the skin of the setting liquid barrier layer with decoration element on its outer surface and the described liquid barrier layer of covering is disclosed.Skin is provided with the optical transmittance allowing decoration element to see through skin.In an alternative embodiment, two skins can be provided, and liquid barrier layer is arranged on below two skins or between two skins.But in all cases, whole skin must be formed as having suitable optical transmittance, this can affect in fact other performance required of described layer.
EP1179330A2 discloses the laminate for disposable diaper, comprises two skins and is arranged at elastomeric element therebetween.Graphic designs may be set on label etc., and the region wherein combination layer binder width being provided with graphic designs is made stiff in order to avoid this region is wrinkling.
Finally, EP1452157Al discloses a kind of exterior layer laminate forming absorbent commodity outer surface.Exterior layer laminate comprises skin, internal layer and is configured in the multiple elastomeric elements between these two layers, and the part of elastomeric element is made into inelastic and inserts between outer and internal layer with the pattern sheet material of pattern or figure and be made into inelastic area with what cover elastomeric element.Skin makes it possible to see pattern sheet material from outside through it, or the egative film of absorber be alternatively omitted and pattern sheet material to be made into liquid impermeable and along the whole vertical axis extension of diaper using as egative film.But in the publication, pattern sheet material must be positioned on outside, or whole skin must be translucent to make figure visible fully.Under arbitrary situation, must require to make compromise between performance at other of figure visibility and egative film.
Although the disclosure quoted above-mentioned, exemplified with the activity of this area, still needs a kind of cover member high-performance and aesthetic appearance combined.Especially, preferably keep balancing forming between the graph position on the number of components of product structure and outer housing, therefore figure user is seemed to attractive in appearance and considers that the quality cost manufacturing described article is minimized.
Summary of the invention
From prior art, the object of the invention is the cover member of the disposable absorbent article improved for being provided with figure.
Therefore, in a first aspect, the present invention relates to a kind of cover member for disposable absorbent article.Cover member longitudinally Y, horizontal X and the thickness direction Z perpendicular to longitudinal Y and horizontal X extension extends.Cover member at least comprises the first nonwoven layers, the second intermediate layer and the impermeable inner film layer of liquid, these layers along described thickness direction in this order layer put.In using, the impermeable inner film layer of described liquid to be placed as along described thickness direction Z than at least described first nonwoven layers and the second intermediate layer closer to user.The impermeable inner film layer of described liquid is provided with figure at it on the side in described second intermediate layer, and described figure has the expanded range along described longitudinal Y and horizontal X.In addition, one of described first nonwoven layers or the second intermediate layer possess opening in described graphics field, described opening along described longitudinal Y and horizontal X extend and described figure at least partially on extend, namely thus the described described layer not being equipped with opening at least partially in this position of described figure covered.Another layer in described first nonwoven layers and described second intermediate layer without opening at least to cover described in described figure in region at least partially have optical transmittance with make through described in described another layer of visible described figure at least partially.
Term " opening " refers to the open area limited out by one of the first nonwoven layers or the second intermediate layer.The expanded range of opening longitudinally Y and horizontal X substantially.Because inevitably all material all has the thickness finally depending on material self, therefore with regard to the expanded range of open area, layer thickness can be ignored.The shape of opening can be any suitable profile.Preferably, shape takes square, rectangle, circle or triangle.
Term used herein " layer " or " web " are overall two-dimensional structures, and it can comprise one or more layer, and can be the laminate be made up of the layer of same material or different materials.Therefore, nonwoven web or nonwoven layers or non-woven laminate layer can comprise multiple layer or nonwoven layers.
Know perspectivity and the pleasing appearance for user in order to ensure pattern from outside, preferably outer 21 have 55% or higher, the optical transmittance of more preferably 65% or higher, most preferably 75% or higher.The perspectivity of pattern reduces along with the minimizing of optical transmittance.
Herein, optical transmittance is defined as total light transmittance, measure according to ASTM standard D1003, technique A (" Hazemeter (transmittance meter) "), adopt CIE standard light source A in measurement, these standards are well known by persons skilled in the art.Measure to obtain meansigma methods to optional 10 points of sample sheets.The total transmittance of adhesive-bonded fabric changes along with manufacturing process hardly and depends on basic weight on the contrary.
For obtaining high total transmittance, preferred basis weights is 40g/m 2or lower, more preferably 30g/m 2or it is lower.Consider flexibility, sense of touch and cost and sufficient intensity, the preferred basis weights as outer field adhesive-bonded fabric is 5-40g/m 2and preferably 8-30g/m 2.
Term " figure " may relate to but be not limited to image, design, pattern, symbol, labelling etc." figure " also comprises the one or more monochromatic pattern and/or multicolor patterns that occupy cover member specific region.Term " painted " may refer to the state of non-white.
Not being capped as described above by retaining figure at least partially, meaning that opening can expose a part for figure.The result of this technical characteristic more easily sees figure outside cover member.Therefore, by graphics field longitudinally Y and horizontal X in the first nonwoven layers and the second intermediate layer, any one provides opening, leave not being capped at least partially of figure, high-performance and cover member attractive in appearance also may be provided.Because at least the first nonwoven layers or intermediate layer in graphics field, there is opening in case reduce figure at least partially on the number of plies, this object can be realized.This part of figure therefore cover by such as less than the other parts of thin-film material material layer, and figure becomes more lively and distinct.In other words, opening makes figure be exposed, therefore from the further eye diagram in the outside of cover member.Therefore, cover member can possess the figure more accurately limited, and its quality less depends on complicated product structure.By principle of the present invention, therefore may meet the hope using the least possible layer on figure, preferably only use one deck, use some material layers can provide high performance cover member simultaneously.
Extra advantage is that figure on the impermeable thin layer of liquid seems the figure be more similar in the other parts of absorbent commodity now.Therefore article overall can express the block graphics more coordinated less depending on Complex Product Structure.
In addition, when manufacturing disposable absorbent article, manufacturer is concerned about and minimizes the use of raw material to reduce the carbon footprint of disposable absorbent article very much.Such as, use additional printed sheet to can be absorbent commodity and increase unnecessary cost and also unfavorable to environment.Compared with the scheme of the prior art of the extra printed sheet of use, embodiments of the invention are because herein is provided more cheaply and more to the responsible technical scheme of environment, not requiring extra play because embodiments of the invention utilize existing cover member layer.
Preferably, any layer of cover graphics of opening is not formed in each layer at least partially.Like this, figure be provided with protective layer and be less exposed to physical influence as dust, when article are packed face-to-face unintentionally and the contact of other article, to tear with the contact of underwear, other physics that maybe may destroy graphical quality between the operating period.Therefore, the lively and distinct characteristic of figure can keep time of more growing.
Preferably, any layer that does not form opening in each layer covers opening at least partially.Like this, the edge of restriction opening is covered to guarantee that edge is not damaged or do not scatter by extra play.
In one aspect of the invention, the second intermediate layer can comprise non-woven material.By using nonwoven material layer, cover member becomes more soft.In addition, strengthen like article dress material and feel.
When as when not having another layer of opening, the first nonwoven layers or the second intermediate layer can have 5-40g/m 2, preferred 8-30g/m 2basic weight.Be not bound by any theory, the opacity or the optical transmittance level that become known for non-woven fabrics are very sensitive to material basis weight.Such as, the nonwoven layers opacity of height indicates covering the high level of figure thereafter.Nature, also other performance of material may can affect opacity, such as density of material, thickness and use degree and the type (such as titanium dioxide, TiO2) of coating.Basic weight is at 5-40g/m 2nonwoven layers in scope will have gratifying opacity providing in figure visibility and good layer intensity.But, select basic weight at above-mentioned preferable range 8-30g/m 2the advantage of interior nonwoven layers is between opacity and the strength of materials, maintain better balance.It is conclusive for can accepting intensity, if because thin material was often easily torn for time in cover member.This is because this is true: when user wearing article, cover member can under tension.When if cover member is used for pull-up diaper or pant-type disposable absorbent commodity, this is correlated with especially.
In one aspect of the invention, opening extends on whole described figure along described longitudinal Y and described horizontal X.This just makes full graphics lively as far as possible and distinct.When figure should universal time coordinated, such as, when some minute patterns that assembly is provided with huge figure or jointly spread news to user or nursing staff, this aspect of the invention may be very important.
For the reason of better adaptive and comfort level, cover member can comprise health elastic component further.Health elastic component puts between the first nonwoven layers and the second intermediate layer, thus cover member is by elastification.In such an embodiment, health elastic component can be constructed such that the area crumple being provided with figure not causing internal layer in the area of opening.
Alternatively, the impermeable inner film layer of liquid can comprise elastica material, thus cover member is by elastification.
In another aspect of this invention, first and second layers is pantostrat.Herein, pantostrat is the layer being formed as continuous web.In addition, opening can be obtained by removing the slotted material part of any one in the first and second pantostrats.By having pantostrat, cover member can be manufactured in an efficient way.In addition, by removing material component from pantostrat, only may make small adjustment to existing manufacturing process and can manufacture cover member of the present invention.Therefore manufacturer utilizes their existing technique and does not carry out large-scale technological improvement to process sequence.Unique additional requirement is the manufacturing step of the part implementing removing layer.Therefore, fabrication scheme that is expensive and/or complexity may be avoided, and can continue to use at a high speed and assemble cover member and article self.
Preferably, the slotted material part of any one deck can be removed by cutting.By cutting slotted material part from any one deck, the opening with level and smooth and consistent edge can be obtained.
Of the present invention another optional in, described first nonwoven layers or described second intermediate layer at least can comprise the first material piece and the second material piece when being provided with described opening.In this aspect, described first material piece can be arranged to limit described opening betwixt at least partially relative to described second material piece.So just may make full use of current material, because compared with a first aspect of the present invention, less material can be removed when forming open area or do not remove material.Therefore become more harmless to environment with regard to material saving aspect manufacturing process.When opening is configured as square or rectangular, this aspect of the invention is particularly advantageous.The opening of square or rectangular shape can be formed by means of only the moulding material sheet arranging two isolated rectangles.
Second intermediate layer is set to than the first nonwoven layers through-thickness Z closer to the impermeable inner film layer of liquid.In one aspect of the invention, opening can be formed in the second intermediate layer.Above-described technological merit be opening and figure cover by the first nonwoven layers.In addition, when laminate cover assembly, when thin layer and closer to each other with the layer of opening time accurately may coordinate the position of opening and figure further.First nonwoven layers through-thickness Z is configured in the outside in the second intermediate layer.In an alternative aspect of the invention, opening can be formed in the first outer nonwoven layer.By making opening be in the first outer nonwoven layer, whole outer surfaces of cover member are provided with different surface textures, and himself can increase the captivation of cover member or article.In addition, by making opening be on skin, opening can limit window around figure, and it has positive influences to figure with exchanging of user, and such as user more easily finds figure because it surround by the edge of distinct window and opening.
The invention still further relates to disposable absorbent article such as diaper, incontinence pant or sanitary towel.Disposable absorbent article comprises the cover member according to above-mentioned aspect any one.Article can have during use in the face of the inner surface of user with during use back to the outer surface of user.In addition, article can comprise the top flat that can form described inner surface, the cover member forming described outer surface and the selectable absorbent cores be configured between top flat and cover member.
Preferably, the impermeable inner film layer of the liquid of cover member is set to than the first nonwoven layers and the second intermediate layer through-thickness Z closer to absorbent cores.
Disposable absorbent article longitudinally comprises front portion, rear portion further and has the middle crotch portion of two leg openings shown in Y.Described crotch extends along described longitudinal Y of article and is engaged in described front portion and described rear portion between described front portion and described rear portion.In addition, anterior longitudinal outer edges is connected to the longitudinal outer edges at rear portion by longitudinal seam.
In certain embodiments, one of described first nonwoven layers or described second intermediate layer possess other figure and other opening further, described other opening along described longitudinal Y and described horizontal X extend in the region of described other figure and described other figure at least partially on extend, and another layer in described first nonwoven layers and described second intermediate layer without other opening at least has optical transmittance covering described in described other figure in region at least partially, thus pass at least partially described of described another layer of visible described other figure.
In one embodiment, when worn described other figure and described other opening be positioned to be positioned at the front surface of described article or rear surface mutually same on.
In another embodiment, when worn described other figure and described other opening be positioned to be positioned at the front surface of described article or rear surface not same on.
In certain embodiments, between described second intermediate layer and described first nonwoven layers, other nonwoven layers is provided with to cover described in described figure at least partially; And at least one in described first nonwoven layers and described other nonwoven layers does not extend the described middle crotch portion covering described article.
Accompanying drawing explanation
Hereinafter, the embodiment of cover member and disposable absorbent article only will be described in detail in detail via example with reference to accompanying drawing, wherein:
Fig. 1 a and 1b illustrates the disposable absorbent article of one embodiment of the invention;
Fig. 2 a, 2b, 2c and 2d illustrate the order of the laminate layers of the cover member of the composition embodiment of the present invention;
Fig. 3 a, 3b and 3c illustrate the order of the laminate layers of the cover member of composition another embodiment of the present invention;
Fig. 4 a, 4b and 4c illustrate the order of the laminate layers of the cover member of composition another embodiment of the present invention;
Fig. 5 illustrates the continuously manufacturing being suitable for the production embodiment of the present invention.
Detailed description of the invention
Below, the embodiment of cover member of the present invention and disposable absorbent article is described with reference to the accompanying drawings.Same or similar feature will represent with identical Reference numeral and omits its repeated description in order to avoid burden.
Although carried out following description to the urine pants of routine, present invention may also be implemented in open diaper namely by diaper that fastened tools closes.In addition, the present invention also can be combined in incontinence protection and sanitary towel.Therefore " absorbent commodity " used herein refer to and can absorb body fluid and be suitable for being placed on the genitals of user and/or anal any article.
Fig. 1 a of accompanying drawing illustrates the embodiment of the disposable absorbent article of the diaper form of being grown up for baby or incontinence.Diaper is intended to as trousers around wearer waist worn.
Absorbent commodity 10 comprises the cover member 20 with anterior 150, and described front portion is intended to extend on the abdominal part of wearer in illustrated embodiment in the accompanying drawings during use.Cover member also comprises rear portion 160, its be in the embodiment shown cover member be intended at user the part that extends on the back of wearer.Article have longitudinal y and the horizontal x in side.Absorbent commodity shown in Fig. 1 a also can be symmetrical around longitudinal center axis L.Described article are formed by folded laminar structure, as shown in figs. lb and lc.
Form longitudinal seam 180 and 180 ' along anterior 150 and the side direction outer most edge at rear portion 160, thus produce the pants-type diaper closed, namely there are the Individual Items of waist opening and a pair leg opening.Side seams can be formed by the known various ways of prior art, such as ultrasonic bonding, binding agent or its combination.One or two side seams also can be can be opened and can be fastening again, and wherein they are formed by machanical fastener or adhesive tape.In another embodiment, front and rear can via a pair elastomeric side panels chip bonding.
The crotch between two parties 170 being generally a part for another shade assembly is parts that the crotch region between being in use intended to through wearer lower limb of article extends.Absorbent cores to be configured in alternatively in crotch 170 and to extend into anterior 150 and rear portion 160.
Article 10 also comprise interior top flat (Fig. 1 a is not shown) and cover member 20.Cover member 20 and top flat 30 will be described in detail below.But, to contact with wearer skin when top flat is and uses diaper or at least faced by the lamella of skin.
Article also can possess the leg opening that waist holds pocket and elastification, i.e. leg opening 220, leg opening 230, leg elastic 240 and leg elastic 250.But, because this architectural feature is well known in the art, no longer it is repeated.
Article also can have so-called convex barrier layer flange (not shown) to provide better security against leakage.These convex barrier layer flange instead of leg elastic in some examples.
In an alternative embodiment, as shown in Figure 1 b, absorbent commodity is so-called open diaper, and it does not have side seams between anterior 150 and rear portion 160.The clamp device of machanical fastener or adhesive tape form is arranged on the lateral margin place at rear portion and intention is fastened along anterior outer surface.
In another embodiment of open diaper structure, the side panels be usually made up of elasticated materials can engagement front and rear portion to form continuous print waist opening.Each side panels is formed with the second side panels part being adjacent to rear portion by being adjacent to the first anterior side panels part.Each side panels can have fastened tools (such as the mechanical fastening device of hook or ring element form), its intention cooperates with the complementary mechanical clamp device (so-called landing area) of front outsides, the whole outer surface of the cover member of front panel can comprise non-woven material, and it is used as the ring material of front panel outer surface or the separate panels of ring material that can be attached to formation landing area.Other example of machanical fastener is button and hole or button ring, snap-fittings etc.Button can be anchored on side panels or absorbent commodity.Alternatively, binding agent fastened tools such as tab belt can be used, the outer surface of the cover member of its middle front part be the material that belt can be bonded in it at least partially.
In another embodiment, absorbent commodity is so-called belt diaper or incontinence garments, and it comprises the contrary band member extended laterally of a pair of being usually connected to rear portion at its waist place.These band portions are applicable to be wrapped in the section of garment wearer and as secured together in hook-loop securing member by the first clamp device such as adhesive tape or mechanical fastening device.Anterior subsequently can through being anchored on the outside of band member by the second clamp device arranging fore waist place between the lower limb of wearer.
Form the material of diaper 10 to select from any material being usually used in this product and the material that can comprise the environmental sound from renewable resources and/or Biodegradable material.
Therefore, top flat and liquid-permeable layer are made up of non-woven material aptly.Another material that can expect is perforated plastic.Especially, the material of top flat is preferably selected from the material showing characteristic such as drying property and flexibility when the diaper.Even if also preferred top flat not chafe and have and repeat surface like the also still dry softness of moistening and fabric.Top flat can be made up of non-woven material, and can be made up of that bore a hole, hydrophobic non-woven material to keep the surface closest to user health to be dry, and comfort like top flat fabric can be given in the hole of described non-woven material.This top flat normally prior art is known, and those top flats well known by persons skilled in the art can by using but particular restriction such as environment regulations.
Absorbent cores 40 is enclosed between the top flat of fluid permeable and the impermeable cover member of liquid usually.Absorbent cores 40 can extend along longitudinal x of disposable absorbent article 10 and be engaged in anterior 150 and rear portion 160, as illustrated shown in Fig. 1 c of the layer structure of absorbent commodity along Fig. 1 b cathetus II between anterior 150 and rear portion 160.But absorbent cores 40 only can be engaged in anterior one of 150 and rear portion 160, or is only engaged in crotch 170 as required.Aptly, at least crotch 170 extends between anterior 150 and rear portion 160.But if there is no crotch 170, then absorbent cores must extend and be engaged in it between anterior 150 and rear portion 160.
Absorbent cores 40 can be the type of any routine.Common absorbing material is cellulose fluff pulp, cotton paper layer, high absorption polymer (so-called super-absorbent polymer or SAP), absorbent foam materials, absorption non-woven material etc. and its mixture and/or the laminate that requires compression according to the rules or do not compress.Select the suitable core being used for any special applications in the limit of power of those skilled in the art.
The size of absorbent cores and variable the turning to of absorptive capacity are suitable for different purposes such as baby or incontinence adult.Such as, absorbent core material can comprise absorbent cores and lower absorbent cores.Term used herein " on " relate to product be positioned closer to the part of user in intention when deployed, simultaneously term D score used herein relate to product closer to its part in the face of garment surface.In addition, the SAP in lower absorbent cores has the major function of liquid storage capacities increasing this layer, go up simultaneously the major function of SAP in absorbent cores be if during use article extrude by external force; prevent the liquid rewetting be absorbed in this layer.SAP in upper absorbent cores can be from for the different type or lower than the percentage ratio of SAP in lower absorbent cores of the SAP in lower absorbent cores.The regional area that SAP can be applicable to absorbent cores such as enters area, liquid distribution area and/or liquid reservation area.Person of ordinary skill in the field will understand, can according to the concentration of SAP in the absorbent properties of the absorbent commodity that will produce and type adjustment absorbent cores, a large amount of SAP such as can be used to obtain thin absorbent commodity, and less amount can be used for some hygienic article for incontinence product design in the daytime simultaneously.
A preferred exemplary for the appropriate materials of absorbent cores is the paper pulp mixed with the SAP (trade name Hysorb M7125) that can buy from the BASF of German Ludwigshafen of about 30%.The mixture of cellulose villus and SAP preferably has 0.08-0.13g/cm 3density.The completely not chloride short fiber oar that absorbent cores also such as can be buied from Stora Enso by not chloride short fiber oar is made.
Except absorbent cores, diaper also can comprise other layer such as the fluid acquisition layer of fast transportation body fluid.Fluid acquisition layer has open loose structure and can hold fast and store a certain amount of fluid provisionally and transmit it to lower floor's absorbent cores further.This is very important, particularly for thin, the compression absorbent commodity usually now with the SAP of high-load.Current absorbent commodity has higher absorbability certainly, and they sometimes have too low accommodation speed and can not be contained in the large quantity of fluid due to urine release in the interval of several seconds instantaneously but then.Fluid acquisition layer is normally by carded and air penetration bonding or acupuncture synthetic fibers such as polyester, polypropylene or its mixture high fluff material of what is called of producing.Appropriate materials for acquisition layer is the dewatering filling that the air penetration non-woven fabrics buied from LIBELTEX is made, and trade mark is DRY WEB T 23W.
cover member
Cover member 20 as illustrated in figure 1 c longitudinally Y and horizontal X extend, and there is the thickness direction Z extended perpendicular to longitudinal X and horizontal Y.Cover member 20 at least comprises the first nonwoven layers 50, second intermediate layer 60 and the impermeable inner film layer 80 of liquid.
In other words, the second intermediate layer 60 is stacked on the impermeable inner film layer 80 of liquid, and the first nonwoven layers 50 is stacked in the outer surface as cover member and/or absorbent commodity on the second intermediate layer 60.
Cover member 20 also can be called as multi-part outer housing, matrix or egative film.Cover member in use covers absorbent cores 40 on clothes side faced by absorbent cores.Top flat 30 and cover member 20 planar have similar extension size on the whole, and simultaneously stability core 40 has slightly less extension size.Top flat 30 and cover member 20 are engaged with each other around the periphery of absorbent cores, thus absorbent cores is enclosed in the big envelope that formed by top flat 30 and cover member 20.Top flat 30 and cover member 20 are engaged with each other by any mode that prior art is common, such as ultrasonic bonding, thermal weld or gummed.
Cover member material can be ventilative to make steam still prevent liquid from passing from it from absorbent cores effusion simultaneously.The example of gas permeable material is many microporous polymer films, from the nonwoven layers laminate of spunbond or meltblown layer, the laminate from many microporous polymer films and non-woven material.The region being positioned at absorbent cores 40 outside of cover member 20 can top flat and cover member be formed, and top flat and cover member are bonded together to form layer structure.Alternatively, cover member be positioned at absorbent core region outside at least partially by providing comfortable and another web material that is breathability to make.
the impermeable thin layer of liquid
As mentioned above, cover member 20 comprises the impermeable thin layer 80 of liquid such as thin plastic as polyethylene or polypropylene film.The impermeable thin layer of liquid at least should cover absorbent cores at it in garment side.
The impermeable thin layer of liquid may also be ventilative.This just for wearer provides higher comfort level, such as, reduces or completely avoid the accumulation of moisture/humidity.By by calcium carbonate (CaCO 3) packing material is combined in microporous polyethylene thin film, can obtain the breathability of the impermeable thin layer of liquid.The breathability of the impermeable thin layer of liquid can quantize by the vapor transmission rate (WVTR) according to ASTM E96-00 technique D.According to an embodiment, the impermeable thin layer of liquid to have in the 24h that measured by above-mentioned ASTM technique at least 500g/m 2vapor transmission rate, preferably 24h at least 1500g/m 2, or most preferably at least 3000g/m in 24h 2.
first nonwoven layers
Cover member 20 also comprises the first nonwoven layers 50.Because cover member 20 is exposed to the outside of urine pants and can contacts with the skin of wearer in crotch 170 when the diaper, the first nonwoven layers 50 preferably has outer surface like fabric or fabric in order to avoid feel viscosity when contacting with Plastic film surface.For which increasing urine pants or other trousers clothes reason with the similarity of normal underwear, like fabric or fabric, outer surface is also preferred.
First nonwoven layers 50 preferably spunbond, melt-blown, spunlaced, water thorn entwine, the non-woven fabrics of wet-laying or carded bonding.The fiber of non-woven material can be natural (such as artificial silk or cellulose fibre) or artificial (such as polymer fiber is as polyolefine fiber, such as polyethylene or polypropylene fibre).First nonwoven layers 50 can be elasticity or inelastic and will preferably include at least one nonwoven layers or be made up of at least one nonwoven layers.First nonwoven layers 50 even can comprise the laminate be made up of two or more nonwoven layers, such as SMS (spunbond-melt blown-spunbond) composite.First nonwoven layers 50 according to the present invention is used for a part for the matrix of disposable pants type clothes by being formed.Aptly, the first nonwoven layers 50 has 5-40g/m 2between basic weight, preferred 8-30g/m 2.First nonwoven layers 50 should be suitably air-impermeable.
second intermediate layer
Cover member 20 also comprises the second intermediate layer 60.Second intermediate layer 60 can be made up of the web material of the common any flexibility in this area, such as nonwoven material layer, plastic foil or the laminate be made up of two or more identical or different material piece.
Second intermediate layer 60 preferred spunbonded, melt-blown, spunlaced, water thorn is entwined, the non-woven fabrics of wet-laying or carded bonding.The fiber of non-woven material can be natural (such as artificial silk or cellulose fibre) or artificial (such as polymer fiber is as polyolefine fiber, such as polyethylene or polypropylene fibre).Second intermediate layer 60 can be elasticity or inelastic and will preferably include at least one nonwoven layers or be made up of at least one nonwoven layers.Second intermediate layer 60 even can comprise the laminate be made up of two or more nonwoven layers, such as SMS (spunbond-melt blown-spunbond) composite.Second intermediate layer 60 is used for a part for the matrix of disposable pants type clothes by being formed.Aptly, the second intermediate layer 60 has 5-40g/m 2between basic weight, preferred 8-30g/m 2.Second intermediate layer 60 should be suitably air-impermeable.
Second intermediate layer 60 comprises plastic foil such as polyolefin film alternatively as polyethylene or polypropylene.Second intermediate layer 60 even can comprise the laminate be made up of the one or more nonwoven layers with one or more plastic foil.
Nonwoven layers 50 and intermediate layer 60 are same or different materials.The size in intermediate layer 60 has nothing to do with the size of nonwoven layers 50 substantially.Intermediate layer 60 can have the size identical with nonwoven layers 50, as shown in Figure 1 b.But, possible intermediate layer 60 have longitudinally with the extension size being laterally greater than or less than nonwoven layers 50.Intermediate layer 60 can be selected by those skilled in the art rightly with the lap of nonwoven layers 50.Preferably, the size in intermediate layer 60 and the lap in nonwoven layers 50 and intermediate layer 60 make intermediate layer 60 overlapping in the whole area residing for the wherein health elastic component 190 of nonwoven layers 50 with nonwoven layers 50.Nonwoven layers 50 and intermediate layer 60 are by suitable mode such as thermal weld, ultrasonic bonding or be adhesively fixed.Bonding is most preferred.Nonwoven layers 50 and intermediate layer 60 are crossed over its whole overlapping region substantially aptly and are fixed to one another.
Nonwoven layers 50 and intermediate layer 60 laminated together with liquid impermeable thin film 80.Lamination can be there is in a number of ways, such as thermal weld, ultrasonic bonding or bonding.
figure
The impermeable internal membrane 80 of liquid is provided with at least one figure 90 further.Figure 90 has the extension size of longitudinally Y and horizontal X.Figure 90 can be arranged in rear portion 160, anterior 150, crotch 170 between two parties any one on or be arranged in part 150,160 and 170 any combination on.In one aspect of the invention, figure can extend to another part from a part.Figure 90 can comprise the design of any expectation, and one or more sign capable of being combined such as letter, numeral, symbol or its combination.Figure can be set up and preferably be printed on the outside of the stacked impermeable inner film layer 80 of liquid on it in the second intermediate layer 60.The embodiment of current expection comprises those uses relating to the polyethylene film of preprinted, the adhesive-bonded fabric of preprinted.Alternatively, provide figure by the preferred label be made up of polyethylene, adhesive-bonded fabric or tissue material or patch at present, figure preprinted is on label or patch.But figure can those skilled in the art can be arranged on layer, label or patch by thinkable arbitrary image forming technology, and should comprise the figure of such as embossing or fringing and printing.
In Fig. 2 a and 3a, schematically disclose a part for the thin film 80 that liquid-impermeable material such as polyethylene is made.In the example of these figure, this layer prints one group of printing zone 90 or picture by suitable printing technology.Colored printing on the impermeable thin film 80 of liquid is undertaken by such as hectographic printing or photogravure.If suitable, other printing technology any can be used.Hectographic printing is that wherein adhere objects to be printed operates in impression cylinder simultaneously and therefore experiences the technology of stretching hardly on plate cylinder.Therefore, it is suitable for enameling printing at thin and material that is that can extend thin film 80 as impermeable in liquid.In Fig. 2 a and 3a, figure 90 represents with mesh point, but as mentioned above, and other object or shape also can replace a little and unrestricted certainly.
the structure in thin layer, nonwoven layers and intermediate layer
In order to allow user clearly distinguish figure 90, one of nonwoven layers 50 and intermediate layer 60 are provided with opening in figure 90 region.
Fig. 2 a, 2b and 2c illustrate the configuration of the first exemplary layer that the present invention is relevant.
In fig. 2 a, thin layer 80 is depicted as to be had 90, one, two figures and is positioned at and will forms the becoming when wearing in anterior part of medicated clothing, and another is positioned at becoming in the part at rear portion when wearing of medicated clothing.Quantity and the layout of figure 90 are exemplary completely, can only arrange single figure in front portion, rear portion or other places.Alternatively, two or more figure can be set, such as two figures be positioned at anterior upper, one be positioned on rear portion, or two to be positioned on rear portion, two be positioned on front portion, this depends on information to be passed.
In figure 2b, the intermediate layer 60 with the opening 70 corresponding to figure 90 position on thin layer 80 is shown.In various embodiments, figure can be greater than or less than opening; Here, the size of each opening 70 is set as and exposes whole corresponding figure 90 when layer 60 and 80 superposes.Certainly, opening can be exposed figure by accurately sizing; Or opening can slightly be greater than or slightly be less than figure, depend on and whether be intended to clearly eye diagram edge, and the position precision of available laminating technology.
Here, intermediate layer 60 is approximately identical with the height of thin layer 80 but have hourglass shape, and it limits be suitable for being formed belt two more broadly bands and be more broadly suitable for being formed the more narrowly band of about and thin layer 80 same widths of the part be engaged between user lower limb between band.Therefore, more narrow portion divide with two more broadly with around horizontal axis to form diaper or similar articles time define hole for lower limb.
In figure 2 c, layer 60 and 80 superposes to expose figure 90 by corresponding opening 70.
In figure 2d, nonwoven layers 50 is positioned on intermediate layer 60, and nonwoven layers 50 has sufficiently high optical transmittance thus distinguishes figure when observing from outside and namely seeing through nonwoven layers 50 through the opening in intermediate layer 60 towards thin layer 80 by described layer.
In Fig. 2 a-2d, opening 70 is roughly square, but thinks that this is only exemplary.Opening can be made up of any shape, and this depends on the shape of figure and the structural requirement to the article manufactured.
Alternatively, the configuration by discontinuous material piece forms opening, and such as Fig. 3 a, 3b and 3c is illustrative.
In fig. 3 a, the thin layer 80 illustrated is similar to Fig. 2 a's.
In fig 3b, two material piece 110 and 120 and thin layer 80 are located overlappingly to limit figure 90 through its opening 70 exposed.Two other material piece is located similarly relative to another optional pattern visible in fig 3b.Four material piece form intermediate layer 60 jointly.Herein, sheet material is square, but according to designing requirement, and rectangle or other is irregularly shaped also in expection.
In figure 3 c, material piece 100 is superimposed upon in material piece 110 and 120, and similar sheet material is superimposed upon and jointly forms in other two material piece in intermediate layer 60 with material piece 110 and 120.After superposition like this, material piece covers opening 70 and figure 90.Each material piece (material piece 100 is one of them) of superposition forms nonwoven layers 50 jointly.
In the embodiment of Fig. 3 a-3c, material piece 110 and 120 is total length that is roughly square and not extension film layer 80, simultaneously material piece 100 are height with material piece 110 and 120 quite and width is enough to the rectangle of both covering material tablets 110 and 120, this configuration makes when not needing cutting seen vertically boundary curve in figure 2d along being easy to restriction leg holes during horizontal axis, and with regard to materials'use and the larger sized article of manufacture, this is favourable.But, it is expected to other shape, and by before assembling 100,110 and 120 or period suitably shaping sheet material the curved edge of leg holes can be provided veritably.
Alternatively, nonwoven layers 50 also can be the single material piece partly overlapping or cover completely it with figure and the material piece that forms intermediate layer 60.
In Fig. 2 a-2d and 3a-3c, by forming in successive layers or pass through the layout of material piece 110,120, opening 70 is limited in intermediate layer 60.But, also expect that its split shed is formed at the configuration in nonwoven layers 50 comparably; 60, intermediate layer is the intrazonal pantostrat of figure, has sufficiently high optical transmittance thus can distinguish figure through described layer when observing from outside.But preferably in intermediate layer 60, form opening at present, because be not shipped damage by the edge of nonwoven layers 50 protective opening subsequently.
Another embodiment shown in Fig. 4 a-4c is also expection at present.
Fig. 4 a illustrates the thin layer 80 be similar to shown in Fig. 3 a, but only has the figure 90 that (in this example) provide for it, is such as arranged on the front portion of article herein.
Fig. 4 b illustrates the intermediate layer 60 laminated together with thin layer 80, and intermediate layer 90 has the width similar with thin layer 80 and length dimension, and has the opening 70 corresponding with figure 90 in location and size when layer 80 and 60 superposes.
Fig. 4 c illustrates that the structure of Fig. 4 b is also provided with and is formed as being rectangle and nonwoven layers 55, material piece of similar two material piece of size is set to cover opening 70, and another is arranged on the position about horizontal axis symmetry, has interval therebetween.The material piece of cambium layer 55 is wider than thin layer 80, thus by the configuration around horizontal axis (being similar to Fig. 3 a-3c) Fig. 4 c, and make the vertical edge of the material piece of cambium layer 55 and to together, define waist and leg hole.
But Fig. 4 c also illustrates and is made by the material piece of the size similar with the sheet material of cambium layer 55 and configuration and superposed another nonwoven layers 50 on it.In the configuration, another nonwoven layers 50 described forms the egative film of clothes and any elastic component used in structure and/or glue and garment surface can be made to isolate.In this embodiment, need the non-woven material of less amount to manufacture clothes, because do not need for cutting out portion's section that will form user leg hole especially.In the present embodiment, processing cost reduces thus.Layer 50 preferably has the light transmittance suitable with the layer 50 of the embodiment of Fig. 2 a-2d and 3a-3c with the combination of layer 55 thus can clearly illustrate figure.
Certainly, the feature of previous embodiment can be combined, and the mode that the layer 55 of such as Fig. 4 c can be identical with the layer 50 of such as Fig. 2 d is formed.
In some configuration, opening can wholely be formed in the border of the layer limiting opening; In other configuration, opening is arranged on the edge part office of layer.With regard to structural intergrity, the former is preferred; Preferred the latter with regard to the simplicity manufactured.
light transmittance
Even if in order in transmission layer 50 and 60, any one also guarantees the definition of figure 90, not only figure 90 self is sufficiently clear, and layer 50 and 60 must have sufficiently high light transmittance.Light transmittance is represented by the ratio of the light intensity being incident on light intensity on object and transillumination.
Increase the absorbance of layer 50 and 60 by reducing its basic weight, but too small basic weight often cannot provide the cover member 20 of gratifying quality or sensation.In order to ensure definition and the quality of cover member 20, well balanced between intensity and sensation of figure 90, the layer be preferably stacked on the impermeable inner film layer 80 of liquid has 5-40g/m 2, preferred 8-30g/m 2total basic weight.Therefore, 55% or higher in fact can be obtained, the favourable optical transmittance of preferably 65% or higher, most preferably 75% or higher, and not in quality or sensuously have compromise.
Although layer 50 and 60 preferred white or very shallow tone, this one or two layer can be colored, only otherwise weaken the definition of figure 90 or the outward appearance of disposable absorbent article 10.
waist elastic
In order to ensure the leakage protection of height, absorbent commodity is preferably designed to make absorbent commodity can not become loose or closely adaptation is on the body of the user from the mode of user health slippage.Cover member 20 such as can possess the some elasticas 195 being set to be parallel to waist opening.Elastica is preferably also set to as previously mentioned towards leg opening 240 and 250.Like this, absorbent commodity is provided with the more comfortable accessory well can revealing protection.
Therefore, in cover member 20, the first nonwoven layers 50 and the second intermediate layer 60 can extend outward from the leading edge of the impermeable inner film layer 80 of liquid and trailing edge, and extension can be folded back on top flat 30 side.Folded part in the waist opening part in the front and back of layer 50 and 60 can be partly or wholly overlapping with absorbent cores 4.Special in Fig. 1 a, multiple elastomeric elements 195 of the so-called waist elastic of common formation are configured between layer 50 and the folded part of 60 on the width of cover member 20 regularly with its tension, thus when they loosen in season, they can shrink and in belt, make non-woven material assemble thus.Elastomeric element 195 is configured to its end when the anterior side of 150 and the side at rear portion 160 are bonded together respectively can be joined.The continuous loop of gathering is generally defined like this near the waist opening around diaper 10.
Waist elastic 195 can be by the form of the belt formed by the layer of nonelastic nonwoven substantially of one or more elongated shape elastomeric element elastification.Described elastomeric element such as arranges elasticity line or belt between layers.Described layer can be formed by the marginal portion of the first nonwoven layers 50 of monolayer material such as folding onto itself or can be made up of a part for independently material such as the first nonwoven layers 50 and other material layer.
The waist elastic of configuration shown in Fig. 1 a need not be had according to the embodiment of disposable urine trousers of the present invention.Waist elastic can be omitted entirely and can only configuration on anterior one of 150 and rear portion 160.Waist elastic can extend along an only part for waist opening, and such as, central section along front waist edge and/or back waist edge extends.
Cover member 20 is preferably nonelastic in crotch region.
health elastic component
Cover member also can comprise health elastic component 190.Health elastic component puts between the first nonwoven layers 50 and the second intermediate layer 60, or is integrated into one of the first nonwoven layers and the second intermediate layer the flexible member such as extending through described layer, thus cover member 20 is by elastification.
As shown in Figure 1a, health elastic component 190 is shown in the multiple elongated shape elastomeric elements extending across anterior 150 and rear portion 160 between lateral margin 180 and 180'.Elastomeric element can be even in part 150 and 160 or unevenly spacedly to open and can the elastic webbing line or belt that is applied in of identical or different tension force.
But health elastic component is dispensable, and can be omitted or designs with the alternate manner being suitable for specific purpose.Therefore, health elastic component can only be put on one of front and rear body 150 and 160 and can comprise elasticity of flexure element or be made up of elasticity of flexure element.Health elastic component can extend at the integral part of absorbent cores.But, in order to avoid in the cover member of absorbent commodity by absorbent cores gauffer during elastification, elastica or elastomeric material usually can be made only to extend on the top of absorbent commodity.Therefore elastica typically only extends to absorbent cores from waist opening, but not spreads all over absorbent cores.
Usually, health elastic component will be laterally extrude this layer to the effect of lower floor, and this causes again this layer such as to become distortion due to wrinkling.But if the area that the figure 90 of the impermeable thin layer of liquid 80 is printed thereon becomes wrinkling, then figure self will become wrinkling, and the visibility of figure 90 and definition will diminish.Therefore, in the embodiment with health elastic component, preferred health elastic component be at least constructed such that not cause in the area of opening 70 the impermeable thin layer of liquid 80 through opening is visible and figure 90 area of printing on it becomes wrinkling.
The some technology utilizing prior art known can realize this object by only cutting elastic component material such as elastica, thus provide the no longer elasticity of laminate thus the region of in use not crumple.Such as, the technology disclosed in JP-A-2002-253605 that is similar to may be used.Alternatively, such as, by reducing the tension force of elastica in opening area to similar effect, can the elasticity of passivation elastomeric material.
When adopting health elastic component in embodiments of the present invention, if particularly do not cut elastic component, preferably select elastomeric material such as elastica (can trade mark Lycra buy elastica), it is in use enough thin and transparent thus at least in opening area, do not cover figure.
elastica material
In alternate exemplary, cover member 20 is provided with elastica material (not shown) to make cover member by elastification.Therefore, cover member 20 comprises elastica material layer 80, first non-woven material 50 and the second non-woven material 60.Elastica material is that liquid is impermeable, and is set to through-thickness Z than at least the first and second nonwoven layers 50,60 closer to absorbent cores 40.The impermeable inner elastomeric rete of liquid 80 is provided with figure 90 further.Figure 90 has the extension size of longitudinally Y and horizontal X.Any one in nonwoven layers 50,60 forms the opening 70 of longitudinally Y and horizontal X, thus described opening 70 figure 90 at least partially on extend.
Alternatively, cover member in absorbent core region outside at least partially by providing other web material of comfort level and breathability to make.An example of such pants type absorbent commodity is as shown in WO2005/122984, and wherein the part in the covering front and rear portion of cover member comprises the elastic material web material of elastic laminate form.
As mentioned above, anterior 150 and the major part at rear portion 160 is made up of inelastic materials alternatively and elasticized side plate can be arranged in the sidepiece of absorbent commodity in the region in bridge joint front and rear portion.
In conjunction with the above, it should be noted that above-mentioned disclosed health elastic component and one or more elastic layer can by together with provide.In this case, when health elastic component is constructed to be in stretching, once stretch from elastic layer release, then can be tending towards wrinkling along with stretching discharges elastic layer further from health elastic component.If figure arranges the thin film (even elastic) on it otherwise will be tending towards meeting with this phenomenon, then preferably should be passivated in figure area in the above described manner by health elastic component, reduce to avoid the wrinkling pattern definition that makes.
Touch upon and exist and the integrated health elastic component of nonwoven layers 50 or intermediate layer 60, or when one of these layers or both self be elasticity time, this is also genuine.
exemplary manufacturing mode
Fig. 5 illustrates the exemplary manufacturing mode of the embodiment of the present invention.
In Figure 5, the thin film web 80 with the figure 90 being arranged at it is in advance advanced from left to right.Meanwhile, the cutting knife C that intermediate materials web 60 forms opening 70 through excision blank 75 above thin film web 80 is directed to cover film web 80, aligns with opening 70 to make figure 90.Thin film web 80 and intermediate materials 60 subsequently further synchronization line proceed to right side, are directed to cover this laminate above the layer 80 and 60 of lamination in this another non-woven material web 50.Three webs be made up of thin film 80, intermediate materials 60 and non-woven material 50 respectively subsequently further synchronization line proceed to right side, be removed to limit belt and crotch area, finally define leg hole by this in the part 220 and 230 of this laminate.
It should be apparent to those skilled in the art that and above-mentioned technique can be applicable to provide above-mentioned any embodiment of the present invention.Certainly, above-described embodiment is only exemplarily provided, and the rewriting carrying out being suitable for according to specific products requirement, material availability and local preferred practice when implementing instruction of the present invention is all in the limit of power of those skilled in the art.All these improve within the scope of the appended claims, are considered to form a part of the present invention.

Claims (15)

1. the cover member for disposable absorbent article (20), described cover member (20) longitudinally (Y) and horizontal (X) extends and has the thickness direction (Z) extended perpendicular to described longitudinal direction (Y) and described transverse direction (X), described cover member (20) at least comprises the first nonwoven layers (50), second intermediate layer (60) and the impermeable inner film layer of liquid (80), these layers along described thickness direction (Z) in this order layer put, the impermeable inner film layer of described liquid (80) is provided with at least one figure (90) at it on the side of described second intermediate layer (60), described figure (90) has the expanded range along described longitudinal direction (Y) and horizontal (X), it is characterized in that: any one in described first nonwoven layers (50) or the second intermediate layer (60) possesses at least one opening (70), described opening along described longitudinal direction (Y) and laterally (X) extend described figure (90) region in and described figure (90) at least partially on extension, and another layer in described first nonwoven layers and described second intermediate layer without opening at least to cover described in described figure in region at least partially have optical transmittance with make through described in described another layer of visible described figure at least partially.
2. cover member according to claim 1 (20), is characterized in that: described second intermediate layer (60) comprises non-woven material.
3. cover member according to claim 1 and 2 (70), is characterized in that: described first nonwoven layers or described second intermediate layer are having 5-40g/m as not having when described another layer of described opening (70) 2basic weight, preferred 8-30g/m 2basic weight.
4. the cover member (20) according to aforementioned claim any one, is characterized in that: described opening (70) extends on whole described figure (90) along described longitudinal direction (Y) and described transverse direction (X).
5. the cover member (20) according to aforementioned claim any one, it is characterized in that: described cover member (20) comprises health elastic component (190) further, described health elastic component (190) is applied between described first nonwoven layers (50) and described second intermediate layer (60), or be integrated in one of described first nonwoven layers (50) and described second intermediate layer, thus described cover member (20) is by elastification; And described health elastic component (190) is constructed such that the described area crumple with described figure (90) not causing described internal layer (80) in the area of described opening (70).
6. the cover member (20) according to aforementioned claim 1-4 any one, it is characterized in that: the impermeable inner film layer of described liquid (80) comprises elastica material (82), thus described cover member (20) is by elastification.
7. the cover member (20) according to aforementioned claim any one, it is characterized in that: described first nonwoven layers and described second intermediate layer (50,60) are pantostrat and described opening (70) is formed by the removal part (75) being provided with the material of the described layer of opening (70).
8. the cover member (20) according to aforementioned claim 1-6 any one, it is characterized in that: described first nonwoven layers or described second intermediate layer (50,60) at least comprise the first material piece (110) and the second material piece (120) when being provided with described opening (70), wherein said first material piece (110) is arranged to limit described opening (70) betwixt at least partially relative to described second material piece (120).
9. a disposable absorbent article (10), such as diaper, incontinence pant or sanitary towel, comprise the cover member (20) according to aforementioned claim any one, it is characterized in that: described article (10) have during use in the face of the inner surface (12) of user, during use back to the outer surface (13) of user, described article (10) also comprise the top flat (30) that can form described inner surface, form the described cover member of described outer surface, and the selectable absorbent cores (40) be configured between described top flat and described cover member.
10. disposable absorbent article according to claim 9 (10), it is characterized in that:, the impermeable inner film layer of described liquid (80) to be configured to along described thickness direction (Z) than at least described first nonwoven layers (50) and the second intermediate layer (60) closer to described absorbent cores (40).
11. disposable absorbent articles (10) according to claim 9 or 10, it is characterized in that: when longitudinally, (Y) sees, described article (10) comprise front portion (150) further, rear portion (160) and there are two leg openings (220, 230) middle crotch portion (170), described crotch (170) extends along described longitudinal direction (Y) and is engaged in described front portion and described rear portion between described front portion (150) and described rear portion (160), the longitudinal outer edges of wherein said front portion (150) is by longitudinal seam (180, 180') be connected to the longitudinal outer edges of described rear portion (160).
12. according to claim 9, disposable absorbent article described in 10 or 11 any one or the cover member according to claim 1-8 any one, it is characterized in that: in described first nonwoven layers (50) or described second intermediate layer (60), any one also possesses other figure and other opening, described other opening along described longitudinal direction (Y) and described transverse direction (X) extend in the region of described other figure and described other figure at least partially on extend, and another layer without described other opening in described first nonwoven layers and described second intermediate layer at least has optical transmittance covering described in described other figure in region at least partially, thus pass at least partially described of described another layer of visible described other figure.
13. disposable absorbent articles according to claim 12, is characterized in that: when worn described other figure and described other opening be positioned to be positioned at the front surface of described article or rear surface mutually same on.
14. disposable absorbent articles according to claim 12, is characterized in that: when worn described other figure and described other opening be positioned to be positioned at the front surface of described article or rear surface not same on.
15. disposable absorbent articles (55) according to claim 9-14 any one, is characterized in that: between described second intermediate layer (60) and described first nonwoven layers (50), be positioned with other nonwoven layers (55) to cover described in described figure at least partially; And at least one in described first nonwoven layers (50) and described other nonwoven layers (55) does not extend the described middle crotch portion (170) covering described article.
CN201280073040.8A 2012-05-09 2012-05-09 Cover member and disposable absorbent article Expired - Fee Related CN104271098B (en)

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Application Number Priority Date Filing Date Title
PCT/EP2012/058526 WO2013167179A1 (en) 2012-05-09 2012-05-09 Outer cover assembly and disposable absorbent article

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CN104271098A true CN104271098A (en) 2015-01-07
CN104271098B CN104271098B (en) 2016-09-14

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JP (1) JP6092370B2 (en)
CN (1) CN104271098B (en)
IN (1) IN2014DN09700A (en)
MX (1) MX341238B (en)
WO (1) WO2013167179A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107485488A (en) * 2016-06-09 2017-12-19 大王制纸株式会社 Breeches type disposable diaper
CN107970089A (en) * 2016-10-21 2018-05-01 大王制纸株式会社 Breeches type disposable diaper
CN113749857A (en) * 2021-10-14 2021-12-07 布童物联网科技(上海)有限公司 Leak protection ventilative type baby panty-shape diapers

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6767130B2 (en) * 2016-02-26 2020-10-14 大王製紙株式会社 Disposable diapers
CN109310551B (en) * 2016-05-10 2021-04-30 爱适瑞卫生与健康股份公司 Wearable disposable absorbent article
JP6113336B1 (en) * 2016-06-09 2017-04-12 大王製紙株式会社 Pants-type disposable diaper

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1209312A (en) * 1997-08-25 1999-03-03 麦克尼尔-Ppc公司 Air-Permeable liquid-unpermeable stop-layer structure and product made of same
EP1287799A2 (en) * 2001-08-31 2003-03-05 Uni-Charm Corporation Disposable diaper
US20050131366A1 (en) * 2002-08-30 2005-06-16 Uni-Charm Co., Ltd Absorbent article having a decorative element
EP1738729A1 (en) * 2005-06-29 2007-01-03 The Procter & Gamble Company Laminate with indicia for an absorbent article

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07276573A (en) * 1994-04-12 1995-10-24 New Oji Paper Co Ltd Stretchable composite waterproof sheet
CA2152407A1 (en) 1994-09-30 1996-03-31 Duane Girard Uitenbroek Laminate material and absorbent garment comprising same
JP3675676B2 (en) * 1999-06-28 2005-07-27 ユニ・チャーム株式会社 Disposable diapers
JP2001054536A (en) 1999-08-20 2001-02-27 Uni Charm Corp Throw-away diaper having pattern sheet and its production
US20020046802A1 (en) 2000-08-04 2002-04-25 Ikuo Tachibana Method for manufacturing disposable worn article
JP3929249B2 (en) 2001-02-27 2007-06-13 花王株式会社 Disposable diaper manufacturing method
JP2002272783A (en) 2001-03-15 2002-09-24 Daio Paper Corp Underwear style disposable paper diaper
JP4208602B2 (en) 2003-02-25 2009-01-14 花王株式会社 Absorbent article and manufacturing method thereof
JP4532941B2 (en) 2004-03-12 2010-08-25 ユニ・チャーム株式会社 Disposable wearing articles
CN100553597C (en) 2004-06-22 2009-10-28 Sca卫生产品股份公司 The absorbent article that comprises elastic laminate
US20060020249A1 (en) * 2004-07-26 2006-01-26 The Procter & Gamble Company Absorbent articles having wetness-indicating character graphics providing an interactive training aid
JP5030775B2 (en) * 2005-06-15 2012-09-19 大王製紙株式会社 Pants-type disposable diapers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1209312A (en) * 1997-08-25 1999-03-03 麦克尼尔-Ppc公司 Air-Permeable liquid-unpermeable stop-layer structure and product made of same
EP1287799A2 (en) * 2001-08-31 2003-03-05 Uni-Charm Corporation Disposable diaper
US20050131366A1 (en) * 2002-08-30 2005-06-16 Uni-Charm Co., Ltd Absorbent article having a decorative element
EP1738729A1 (en) * 2005-06-29 2007-01-03 The Procter & Gamble Company Laminate with indicia for an absorbent article

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107485488A (en) * 2016-06-09 2017-12-19 大王制纸株式会社 Breeches type disposable diaper
CN107485488B (en) * 2016-06-09 2021-02-26 大王制纸株式会社 Pants-type disposable diaper
US11576826B2 (en) 2016-06-09 2023-02-14 Daio Paper Corporation Underpants-type disposable diaper with cover nonwoven fabric having improved air permeability
CN107970089A (en) * 2016-10-21 2018-05-01 大王制纸株式会社 Breeches type disposable diaper
CN107970089B (en) * 2016-10-21 2021-07-13 大王制纸株式会社 Pants-type disposable diaper
CN113749857A (en) * 2021-10-14 2021-12-07 布童物联网科技(上海)有限公司 Leak protection ventilative type baby panty-shape diapers

Also Published As

Publication number Publication date
JP2015515890A (en) 2015-06-04
JP6092370B2 (en) 2017-03-08
MX2014013027A (en) 2015-02-04
WO2013167179A1 (en) 2013-11-14
CN104271098B (en) 2016-09-14
IN2014DN09700A (en) 2015-08-07
MX341238B (en) 2016-08-12

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