CN106687084A

CN106687084A - Process for making an absorbent article comprising a topsheet/acquisition layer laminate

Info

Publication number: CN106687084A
Application number: CN201580048708.7A
Authority: CN
Inventors: R·罗萨蒂; J·M·奥尔; A·格勒尼耶; J·T·奈普迈尔; A·查特济
Original assignee: Procter and Gamble Ltd
Current assignee: Procter and Gamble Ltd; Procter and Gamble Co
Priority date: 2014-09-12
Filing date: 2015-09-03
Publication date: 2017-05-17
Also published as: EP3191042A1; WO2016040091A1; JP2017530753A

Abstract

A process of making an absorbent article comprising the steps of providing a liquid permeable topsheet web extending substantially continuously in a machine direction, the topsheet web having a first and second surface, a liquid impermeable backsheet web extending substantially continuously in the machine direction and an acquisition layer having a first and second surface The process comprises the step of aligning the topsheet web and the acquisition layer in a face to face relationship such that the second surface of the topsheet in in contact with the first surface of the acquisition layer. The process comprises the step of simultaneously mechanically deforming and combining the topsheet web together with the acquisition layer. The topsheet web and acquisition layer are nested together such that a majority of the three-dimensional protrusions formed in the topsheet web coincide with and fit together with a majority of the three-dimensional protrusions formed in the acquisition layer to provide a topsheet/acquisition layer laminate web having three-dimensional protrusions.

Description

For the technique for preparing the absorbent article for including top flat/acquisition layer lamilate

Technical field

The invention provides a kind of technique for preparing the absorbent article including top flat/acquisition layer lamilate.Specifically, this It is bright there is provided a kind of technique for preparing absorbent article, the absorbent article includes that top flat/acquisition layer lamilate, dry-laying fiber are tied Structure and optional carrier layer.

Background technology

Absorbent article generally includes top flat, egative film and the absorbent cores being arranged between top flat and egative film.Absorbent article includes Acquisition layer and optionally Distribution Layer.Acquisition layer can receive liquid body exudates temporarily to store them from top flat.Then, Distribution Layer can receive liquid body exudates and distribute them and be transferred to absorbent cores to effectively utilize from acquisition layer Absorbent cores.Such absorbent article shows gratifying flow handling feature.

Three-dimensional top flat has been have developed；See, for example, U.S. Patent application US 2014/0121625A1.

There is still a need for further improving three-dimensional top flat.

Need to develop a kind of method towards skin layer with three-dimensional structure prepared for absorbent article, should be towards Skin layer provides the flow handling feature for improving and for example bleeds back towards less on skin layer, while still meeting wearer's Physical comfort degree and perception comfort level.

Also need to prepare with three-dimensional structure towards skin layer to reduce liquid body exudates and wearer's skin Contact.It is also expected to providing soft feeling/soft sense for caregiver and wearer towards skin layer.

The content of the invention

The invention provides a kind of technique for preparing absorbent article, and the technique is comprised the following steps：

A () provides the liquid permeable top flat web essentially continuously extended along longitudinal direction, top flat web has first Surface and second surface；The egative film web of the liquid impermeable essentially continuously extended along longitudinal direction；With with first surface With the acquisition layer of second surface, top flat web and acquisition layer include fiber；

B () aligns top flat web and acquisition layer with face-to-face relation so that the second surface contact collection of top flat web The first surface of layer；

(c) while make top flat web mechanically deform and combine together with acquisition layer, thus top flat web and acquisition layer It is nested together so that the most of three-dimensional protuberance being formed in top flat web and the great majority three being formed in acquisition layer Dimension protuberance overlaps and fits together, so as to provide the top flat/acquisition layer lamilate web with three-dimensional protuberance,

Wherein the width of acquisition layer is less than top flat width transversely；

Top flat/acquisition layer lamilate web has the first surface of the second surface for including acquisition layer；

And

E () part engagement of egative film is arrived a part for the top flat web of top flat/acquisition layer web so that top flat/adopt The first surface for collecting fit web layer by layer faces egative film web.

The technique may include the step of cutting into single absorbent article, and the absorbent article includes egative film, top flat and acquisition layer, Characterized in that, top flat and acquisition layer engage to form top flat/acquisition layer lamilate.

Preparing the technique of absorbent article may include following steps：

A () provides dry-laying fibre structure or wet laid fibrous structure；

B dry-laying fibre structure or wet laid fibrous structure are deposited on top flat/acquisition layer lamilate web by () On first surface or it is deposited in egative film web；And

C () part engagement of egative film web is arrived a part for the top flat web of top flat/acquisition layer lamilate web, its Middle dry-laying fibre structure or wet laid fibrous structure are located at top flat/between acquisition layer lamilate web and egative film web.

A () provides the liquid permeable top flat web essentially continuously extended along longitudinal direction, top flat web has first Surface and second surface；The egative film web of the liquid impermeable essentially continuously extended along longitudinal direction；With first surface and The acquisition layer of second surface；Dry-laying fibre structure and the carrier layer web with first surface and second surface, top flat width Material and acquisition layer include fiber；

(c) while make top flat web mechanically deform and combine together with acquisition layer, thus top flat web and acquisition layer Nest together so that the most of three-dimensional protuberance being formed in top flat web and the most of three-dimensionals being formed in acquisition layer Protuberance overlaps and fits together, so as to provide the top flat/acquisition layer lamilate web with three-dimensional protuberance,

Wherein the width of acquisition layer is less than top flat web width transversely；Top flat/acquisition layer lamilate web has bag Include the first surface of the second surface of acquisition layer；

C () is deposited on dry-laying fibre structure on the first surface of carrier layer web；And

D () part engagement of egative film is arrived a part for the top flat web of top flat/acquisition layer lamilate web so that carry The second surface of body layer web is towards top flat/acquisition layer lamilate web or egative film web.

The technique may include the step of cutting into single absorbent article, the absorbent article include egative film, carrier layer, top flat and Acquisition layer, it is characterised in that top flat and acquisition layer engage to form top flat/acquisition layer lamilate.

Most of three-dimensional protuberances can be three-dimensional protuberance or top flat/acquisition layer in top flat/acquisition layer lamilate web Three-dimensional protuberance in lamilate more than 50% or or more than 60% or more than 70% or more than 80% or more than 90% exceed 95% or more than 98%.

Top flat web and acquisition layer in top flat/acquisition layer lamilate can be intimate contact with one another.

Three-dimensional protuberance can be formed by the fiber of top flat and acquisition layer.Most of three-dimensional protuberances may include to form opening Base portion, relative distal part and one or more the side walls between the base portion and distal part of three-dimensional protuberance.Base Portion, distal part and one or more side walls can be formed by fiber so that most of three-dimensional protuberances only can have at base portion Opening.At least the 50% of the three-dimensional protuberance of top flat/acquisition layer lamilate or at least 80% only can have opening at base portion.

The wide output of the width of the acquisition layer of top flat/acquisition layer lamilate web can be tied less than dry-laying fiber is included The acquisition layer width of structure or wet laid fibrous structure 40% and/or less than the 20% of absorbent cores width.

The absorbent article may include lining ring hoop.

The most of three-dimensional protuberance of top flat/acquisition layer lamilate web at least or can exist only in wherein top flat/collection In top flat web layer by layer in the fit web region Chong Die with acquisition layer.

The most of three-dimensional protuberance of top flat/acquisition layer lamilate may be present in the axis of pitch parallel to absorbent article and prolong In the region stretched.The most of three-dimensional protuberance of top flat/acquisition layer lamilate may be present in following region, the region parallel to The longitudinal axis of absorbent article, but it is not extended past the region that wherein lining ring hoop is attached to absorbent article.In said case, shape Formed by the fiber of top flat into the most of three-dimensional protuberance in the top flat in top flat/acquisition layer lamilate.

The technique may include the step of providing the carrier layer web of coloring.

Description of the drawings

Although the claims that this specification passes through to particularly point out and be distinctly claimed the present invention are drawn a conclusion, It is believed that the present invention is better understood by the way that following explanation is read in conjunction with the accompanying, wherein：

Fig. 1 is the absorbent article in diaper form according to the present invention, and the diaper includes that exemplary topsheet/acquisition layer is laminated The length of body, wherein acquisition layer is less than the length of top flat, and some of them layer is partly removed；

Fig. 2 is the cross section of the diaper of Fig. 1；

Fig. 3 is the cross section of the diaper of Fig. 1；

Fig. 4 is the absorbent article in diaper form according to the present invention, and the diaper includes that exemplary topsheet/acquisition layer is laminated The wherein top flat that the three-dimensional protuberance of body, wherein top flat/acquisition layer lamilate is only formed in top flat/acquisition layer lamilate with adopt The position that collection layer is overlapped, some of them layer is partly removed；

Fig. 5 is the absorbent article in diaper form according to the present invention, and the diaper is included with another type of absorption Exemplary topsheet/the acquisition layer of core, some of them layer is partly removed；

Fig. 6 is the cross section of the diaper of Fig. 5；

Fig. 7 be with Fig. 6 identicals point at intercept Fig. 5 absorbent article cross section, wherein because absorbent article adds It is loaded with liquid body exudates and defines passage；

Fig. 8 is the diagrammatic side view of an example of the technique according to the present invention；

Fig. 9 is the diagrammatic side view of another example of the technique according to the present invention；

Figure 10 is the diagrammatic side view of another example of the technique according to the present invention；

Figure 11 is the absorbent article in diaper form according to the present invention, and the diaper includes the exemplary top with carrier layer Piece/acquisition layer lamilate, some of them layer is partly removed；

Figure 12 A are the cross section of the diaper of Figure 11；

Figure 12 B are another cross section of the diaper of Figure 11；

Figure 13 is the absorbent article in diaper form according to the present invention, and the diaper includes the exemplary top with carrier layer Piece/acquisition layer lamilate, some of them layer is partly removed；

Figure 14 is the cross section of the diaper of Figure 13；

Figure 15 be according to the present invention the absorbent article in diaper form, the diaper include have be positioned at absorbent article The exemplary topsheet of the acquisition layer in proparea/acquisition layer lamilate, some of them layer is partly removed；

Figure 16 be according to the present invention the absorbent article in diaper form, the diaper include have be positioned at absorbent article The exemplary topsheet of the acquisition layer in back zone/acquisition layer lamilate, some of them layer is partly removed；

Figure 17 is the perspective view of equipment, and the equipment is included for forming top flat/acquisition layer lamilate web of the invention First intermeshing roller and the second intermeshing roller；

Figure 18 A are the cross-sectional view of a part for equipment shown in Figure 17；

Figure 18 B are the perspective view of a part for the second intermeshing roller of equipment shown in Figure 17；

Figure 19 A are the schematic diagram of the three-dimensional protuberance of the top flat/acquisition layer lamilate obtained with equipment shown in Figure 17；

Figure 19 B are the perspective view of the three-dimensional protuberance of top flat/acquisition layer lamilate shown in Figure 19 A；

Figure 19 C are another perspective view of the three-dimensional protuberance of top flat/acquisition layer lamilate shown in Figure 19 A；

Figure 19 D are the schematic diagram of the three-dimensional protuberance of the top flat/acquisition layer lamilate obtained with equipment shown in Figure 17；

Figure 19 E are the schematic diagram of the three-dimensional protuberance of the top flat/acquisition layer lamilate obtained with equipment shown in Figure 17；

Figure 19 F are the schematic diagram of the three-dimensional protuberance of the top flat/acquisition layer lamilate obtained with equipment shown in Figure 17；

Figure 20 A are the schematic diagram of the three-dimensional protuberance of the top flat/acquisition layer lamilate obtained with equipment shown in Figure 17；

Figure 20 B are the schematic diagram of the three-dimensional protuberance of the top flat/acquisition layer lamilate obtained with equipment shown in Figure 17；

Figure 20 C are the schematic diagram of the three-dimensional protuberance of the top flat/acquisition layer lamilate obtained with equipment shown in Figure 17；

Figure 20 D are the schematic diagram of the three-dimensional protuberance of the top flat/acquisition layer lamilate obtained with equipment shown in Figure 17.

Specific embodiment

The definition of term

As used herein, term " absorbent article " refer to be close to or neighbouring wearer body to absorb and accommodate from body The disposable products of the various liquid body exudates discharged, diaper, trousers and female sanitary towel etc..These absorbent articles lead to Often include top flat, egative film, absorbent cores and optionally acquisition layer and/or Distribution Layer and other parts, wherein absorbent cores are usually placed in Between egative film and acquisition system or top flat.The absorbent article of the present invention can be diaper or trousers.

As used herein, term " diaper " is referred to and is intended to by wearer around lower body dress to absorb and accommodate by body The absorbent article of the liquid body exudates that body is discharged.Diaper can be by child (such as baby or toddlers) or adult's dress. They can have element.

As used herein, term " trousers " refer to be designed to baby or adult wearers with built-in edge, waist The absorbent article of portion's opening and leg opening.By the way that the leg of wearer is stretched into leg opening and pant type absorbent article is moved to Position near wearer's lower body and trousers are worn with wearer.Trousers can carry out preform using any suitable method, bag Include but be not limited to bonding (for example, suture, welding, adhesive, the cohesion using refastenable and/or not reproducible fastening Bonding, fastener etc.) each several part of product is bonded together.Trousers can be along any position preform (for example, side of article periphery It is side fastening, Attacking Midfielder's fastening).

As used herein, term " extendable " refers to following material, if undergoing following test, when disruptive force is reached Or before disruptive force is reached, the material can be equal to or more than its initial length in applying power along longitudinally and/or laterally experience The apparent elongation of at least the 100% of degree：

MD tensile properties and the Option B of CD tensile properties using method WSP 110.4 (05) with the specimen width of 50mm, The gauge length and the Drawing rate of 60mm/ minutes of 60mm is measuring.

According to " method of testing " as above, expect that material can when disruptive force is reached or before disruptive force is reached Along longitudinally and/or laterally experience be equal to or more than at least 100% or 110% or 120% or 130% be up to 200% it is apparent Elongation.

If material can experience less than its initial length 100% apparent elongation (if undergoing above-mentioned test), It is " not extendable ", as used herein.

As used herein, term " top flat/acquisition layer lamilate web " refers to the top flat web arranged with face-to-face relation With closely combining for acquisition layer.Top flat web has first surface and second surface.When absorbent article when in use, top flat web First surface face the body of wearer.Acquisition layer is towards egative film web.Top flat web and acquisition layer in top flat web and Experienced during acquisition layer combination with one another while and united mechanically deform.Top flat/acquisition layer lamilate web includes forming three The variant part of dimension protuberance.Top flat/acquisition layer lamilate web is formed by the way that top flat web and acquisition layer are nested together, So that the most of three-dimensional protuberance being formed in top flat web overlaps with the most of three-dimensional protuberance being formed in acquisition layer And fit together, as shown in figures 19a and 20a.

In top flat/acquisition layer lamilate web, top flat web and acquisition layer can be intimate contact with one another.

In the region of the three-dimensional protuberance of top flat/acquisition layer lamilate web, in there is no top flat web or acquisition layer One of IPN by corresponding another top flat web or acquisition layer.Top flat web and acquisition layer are extendable so that Top flat web and/or acquisition layer can be stretched and IPN does not pass through corresponding rupture top flat web or acquisition layer.

In the region of three-dimensional protuberance, top flat web and/or acquisition layer may include one or more discontinuities.One or The formation of multiple discontinuities be attributable to the characteristic of top flat web and acquisition layer, the i.e. apparent elongation of fiber, fiber mobility, Deformation and stretch capability in the region of the three-dimensional protuberance for wherein forming top flat/acquisition layer lamilate web.In other words, push up It is as the same that the ductility of piece web is smaller than acquisition layer or vice versa；However, non-ruptured top flat web or acquisition layer not IPN phase The top flat web of the rupture answered or acquisition layer.

Therefore, top flat/acquisition layer lamilate web can be formed in the following way：In top flat/acquisition layer lamilate web Three-dimensional protuberance region in interrupt one of top flat web or acquisition layer so that the top flat of corresponding another non-interrupted The three-dimensional protuberance of web or acquisition layer is fitted at least in part with the three-dimensional protuberance of the top flat web or acquisition layer interrupted Together, as shown in Figure 19 D, 19E, 20B and 20C.

Alternatively or in addition to the above, top flat/acquisition layer lamilate web can also be formed in the following way： Interruption top flat web and acquisition layer in the region of the three-dimensional protuberance of top flat/acquisition layer lamilate web, and top flat web Three-dimensional protuberance overlaps and fits together with the three-dimensional protuberance of acquisition layer.If top flat web and acquisition layer include three-dimensional prominent The discontinuities gone out in portion region, then in the top flat web in the region of the three-dimensional protuberance of top flat/acquisition layer lamilate web Discontinuities will not overlap with the discontinuities in the acquisition layer in the three-dimensional protuberance region of top flat/acquisition layer lamilate web, such as Shown in Figure 19 F and 20D.In the region of the three-dimensional protuberance of top flat/acquisition layer lamilate web, there is no top flat web or adopt One of collection layer IPN is through corresponding another top flat web or acquisition layer.

As used herein, term " discontinuities " to be referred to and be formed at top during the formation of top flat/acquisition layer lamilate web Hole in piece web and/or acquisition layer, and do not include being typically found in hole between the fiber in non-woven material and Gap.

As used herein, term " mechanically deform and combine " refers to that top flat web and acquisition layer are placed with pass face-to-face System, and while mechanically deformed between the first roller and the second roller, and while closely combined.Top flat web and adopt Collect the mechanically deform of layer depending on the technique, required equipment, but also depend on the characteristic of top flat web and acquisition layer, i.e., it is fine Dimension apparent elongation, fiber mobility, wherein formed top flat/acquisition layer lamilate web three-dimensional protuberance region in become Shape and stretching ability, experience plastic deformation ability, the plastic deformation after the first roller and the second roller has been used or due to Elasticity is recovered and the partly afterboarding of resilience.

Mechanically deform may include top flat web between the first intermeshing roller and the second intermeshing roller together with collection Layer intermeshing is together.First intermeshing roller includes multiple ridges and respective slot.Second intermeshing roller includes multiple rows of week To tooth and respective slot spaced apart so that acquisition includes multiple variant parts of three-dimensional protuberance.Tunnel-type ring can be a species The three-dimensional protuberance of type.

As used herein, term " top flat/acquisition layer lamilate " refers to the top flat and acquisition layer arranged with face-to-face relation Closely combine.Top flat has first surface and second surface.When absorbent article when in use, the first surface of top flat is faced to be worn The body of the person of wearing.Acquisition layer is towards egative film.Top flat and acquisition layer experienced simultaneously during top flat and acquisition layer combination with one another And united mechanically deform.Top flat/acquisition layer lamilate includes forming the variant part of three-dimensional protuberance.By by top flat and collection Layer nests together to form top flat/acquisition layer lamilate so that the most of three-dimensional protuberance being formed in top flat and formation Most of three-dimensional protuberance in acquisition layer overlaps and fits together, as shown in figures 19a and 20a.

For each three-dimensional protuberance：

- top flat is nested into acquisition layer or vice versa as the same so that the most of three-dimensional protuberance of top flat and acquisition layer Most of three-dimensional protuberances overlap and fit together, as shown in figures 19a and 20a.Dash forward in the three-dimensional of top flat/acquisition layer lamilate In going out the region in portion, there is no one of top flat or acquisition layer IPN into or through corresponding another top flat or collection Layer.

- in addition to the above, one of top flat or acquisition layer can be prominent in the three-dimensional of top flat/acquisition layer lamilate It is interrupted in the region in portion so that three-dimensional protuberance and interruption by made by the top flat or acquisition layer of corresponding another non-interrupted The three-dimensional protuberance of acquisition layer of three-dimensional protuberance or interruption of top flat fit together at least in part, such as Figure 19 D, 19E, Shown in 20B and 20C.In the region of the three-dimensional protuberance of top flat/acquisition layer lamilate, there is no in top flat or acquisition layer Person's IPN is by corresponding another top flat or acquisition layer.

- alternatively or in addition to the above, top flat and acquisition layer can be prominent in the three-dimensional of top flat/acquisition layer lamilate It is interrupted in the region in portion, and the three-dimensional protuberance of top flat overlaps and fits together with the three-dimensional protuberance of acquisition layer.Top The discontinuities in top flat in the region of the three-dimensional protuberance of piece/acquisition layer lamilate can not be with top flat/acquisition layer lamilate Discontinuities in acquisition layer in the region of three-dimensional protuberance overlap, as shown in Figure 19 F and 20D.In top flat/acquisition layer lamilate Three-dimensional protuberance region in, there is no one of top flat or acquisition layer IPN by corresponding another top flat or collection Layer.

As used herein, term " tunnel-type ring " refers to that the three-dimensional protuberance of top flat/acquisition layer lamilate is limited by multiple rings Fixed, the ring extends to acquisition layer or extends to top flat from acquisition layer from top flat.Multiple rings are included by the laminated system of top flat/acquisition layer Into one or more fiber.The fiber of multiple rings is substantially in alignment with each other so that multiple rings form tunnel-type ring.Tunnel-type ring can It is defined as semi-cylindrical shaped part (cylindania), i.e., along its length to the cylinder of hemisect, it includes the every of tunnel-type ring The opening and base portion opening of individual end.

As used herein, term " most of three-dimensional protuberances " refers to that the three-dimensional in top flat/acquisition layer lamilate web is dashed forward The three-dimensional protuberance gone out in the top flat/acquisition layer lamilate of portion or absorbent article more than 50% or more than 60% or more than 70% Or more than 80% or more than 90% or more than 95% or more than 98%, each of which includes being formed the base portion of opening, relative remote Side part and one or more the side walls between the base portion and distal part of three-dimensional protuberance.Base portion, distal part and one Individual or multiple side walls are formed by fiber so that three-dimensional protuberance only has opening at base portion (as shown in Figure 19 A are exemplary).

As used herein, term " longitudinal direction " or " MD " refer to the path that material such as web is advanced along whole manufacture process.

As used herein, term " horizontal " or " CD " refer to the path being transversely to the machine direction in the plane of web.

As used herein, term " cellulose fibre " refers to the natural fiber of usually wood pulp cellulose.Wood pulp applicatory Including chemical wood pulp, such as kraft pulp, sulphite wood pulp and sulfate wood pulp, and groundwood pulp, including such as wood fragments The thermomechanical pulp of slurry, thermomechanical pulp and chemical modification.It is possible with deriving from deciduous tree (to be hereinafter also referred to as " hard Wood ") and coniferous tree (being hereinafter also referred to as " cork ") wood pulp.Hardwood fiber and cork fibrous can be blended, Huo Zheling Selection of land, deposits to provide the web of layering in the form of layer.

As used herein, term " dry-laying fiber " refers to the fiber provided in gaseous fluid medium (air).

As used herein, term " wet laid cellulose " includes following cellulose fibre, according to wet-lay papermaking processes, The cellulose fibre was suspended in water-bearing media such as water before web and drying is converted into.

As used herein, term " web " is to refer to be wound into the material of volume.Web can be non-woven material.

As used herein, term " nonwoven webs " is referred to by the fiber of orientation or arbitrary orientation by friction and/or glue The material of the viscous and/or manufacture that adheres to and be bonded to, web, piece or batt, not including paper with by weaving, braiding, cluster into, Loop bonding and combine the yarn of constraint or the product of long filament, regardless of whether stitching in addition.Fiber can be natural or man-made origin.Fiber can With short yarn or continuous filament yarn or it is formed in situ.The porous fibrous structure of non-woven material can be configured on demand It is liquid permeable or impermeable.

As used herein, term " absorbent cores " refers to that such as lower component, it is placed on or is intended to be placed on absorbent article It is interior, and including the absorbing material being encapsulated in core wrappage.Term " absorbent cores " does not include acquisition layer or Distribution Layer or not It is the integral part of core wrappage or any other part of the absorbent article being not placed in core wrappage.Absorbent cores are usual For absorbent article such as lower component, it includes whole or at least most of super-absorbent polymer, and with absorbent article The maximum absorption capacity of all parts.

As used herein, term " being substantially free of absorbing material " referred in the region of absorbing material is substantially free of, The base weight of absorbing material is the absorbing material base weight in the remainder of absorbent cores at least below 10%, particularly less than 5%, Or less than 2%.

As used herein, term " super-absorbent polymer " (being abbreviated as herein " SAP ") refers to following absorbing material, and they are Crosslinked polymeric materials, when (CRC) (EDANA method WSP 241.2-05E) is tested to measure using " Centrifuge Retention Capacity ", The polymeric material can absorb the 0.9% aqueous saline solution of at least 10 times their weight.The SAP of the present invention is specifically Can have more than 20g/g, or more than 25g/g, or 20 to 50g/g, or 20 to 40g/g, or the crc value of 25 to 35g/g.Can be used for The SAP of the present invention includes the polymer that can absorb a large amount of liquid body exudates of various water-insolubles but water-swellable.

As used herein, term " being joined to " includes on other elements that element is direct by the way that element is directly attached to The configuration being fixed on another element, and by the way that element is attached into one or more intermediary elements, the intermediary element after And be attached on another element, and configuration element being indirectly fixed on another element.Term " being joined to " cover by A certain element is fixed to the configuration of another element at select location, and by a certain element across one of element whole surface It is completely fixed to the configuration of another element.Term " being joined to " can be by fixed side including any of wherein element Formula, including but not limited to mechanical interlocking.

As used herein, term " neighbouring transverse edge engagement " refers to the first transverse edge and/or second when ground floor Transverse edge adjacent to the second layer the first transverse edge and/or the second transverse edge engage when, the first transverse edge of ground floor And/or second transverse edge the first transverse edge and/or the second transverse edge that are arranged on the second layer be medially spaced apart In region.The region has following width, and the width is the 1% to 30% of the width of the second layer.

" including " or "comprising" are open-ended terms, the presence of each specified such as component described thereafter, but not Exclude the presence of further feature such as element, step, component known in the art or disclosed herein.These are based on verb The term of " including " should be read as covering narrower term "consisting essentially of ...", and it excludes NM significantly shadow The sound feature structure performs any element, step or the composition of the mode of its function；And cover term " Consists of ", its Exclude unspecified any element, step or composition.Any preferred or exemplary hereinafter described does not limit power The scope that profit is required, so carry out unless clearly indicates.Words " usual ", " usually ", " advantageously " etc. also limit feature, its It is not intended to limit the scope of claim, so carry out unless clearly indicates.

General remark to absorbent article 20

It is a kind of wherein to use the Exemplary absorbent articles 20 of absorbent cores 28 of the invention for as shown in Figure 1, Figure 4 and Figure 5 With different absorbent cores construction taped diaper 20.Fig. 1, Fig. 4 and Fig. 5 are the top of the exemplary diaper 20 in flattened state Many parts of facial planes figure, the wherein structure are removed to be shown more clearly that the construction of diaper 20.The diaper 20 is only in order at Shown in the purpose of illustration, because the present invention can be used to prepare various diapers or other absorbent articles.

Absorbent article 20 includes the top flat/acquisition layer lamilate formed by liquid permeable top flat 24 and acquisition layer 52 245.In other words, absorbent article 20 includes liquid permeable top flat 24 and acquisition layer 52, it is characterised in that top flat 24 and adopt Collection layer 52 engages to form top flat/acquisition layer lamilate 245.Absorbent article 20 includes the egative film 25 of liquid impermeable and is located at Absorbent cores 28 between top flat 24 and egative film 25.Absorbent article 20 includes leading edge 10, back edge 12 and two vertical side of the edge 13.Leading edge 10 for absorbent article 20 the anterior edge placed being intended to when being worn towards user, and back edge 12 is opposite edges.When absorbent article 20 is observed towards wearer side in flat-out configuration, absorbent article 20 can imagination Ground is divided by longitudinal axis 80, and the longitudinal axis extends to back edge 12 from the leading edge 10 of absorbent article 20, and will absorb Product 20 is divided into the half portion of two substantial symmetries relative to the axis, as Fig. 1, Fig. 4 and Fig. 5 exemplarily shown in.

Absorbent article 20 may include Distribution Layer 54, and the Distribution Layer may include dry-laying fibre structure or wet laid cellulose Structure.When absorbent article 20 when in use, top flat/acquisition layer lamilate 245 faces the body of wearer.

50g can be had according to " wet burst strength method of testing ", including the wet laid fibrous structure of wet laid cellulose To " wet burst strength " and combinations thereof of 500g.

Distribution Layer 54 may include dry-laying fibre structure.Dry-laying fibre structure may include dry-laying fiber 540. Dry-laying fibre structure may include the mixture with super-absorbent polymer and dry-laying fiber.Dry-laying fiber can be wrapped Include intrafiber crosslink connection cellulose fibre.

Distribution Layer 54 can be free of bunch fiber.

Distribution Layer 54 can for example include by weight at least 50% cross-linked cellulose fibres.Cross-linked cellulose fibres can be Play fold, twisting or crimping or combinations thereof (including fold, twisting and curling is played).The material of the type Material was used in disposable diaper in the past as a part for acquisition system, such as A1 of US 2008/0312622 (Hundorf)。

The cellulose fibre being crosslinked suitable for the Exemplary chemical of Distribution Layer 54 is disclosed in US 5,549,791；US 5, 137,537；In WO95/34329 or US2007/118087.Exemplary cross linking agents may include polycarboxylic acids such as citric acid and/or gather Acrylic acid such as acrylic acid and maleic acid.

Distribution Layer can generally have 30g/m²To 400g/m², specifically 100g/m²To 300g/m²Average basis weight.Collection The density of layer can have difference according to the compression degree of product, but can be between 0.03g/ when measuring under 0.30psi (2.07kPa) cm³To 0.15g/cm³Between, specifically 0.08g/cm³To 0.10g/cm³Between.

Distribution Layer 54 can have 30gsm to 400gsm, and specifically 100gsm's to 300gsm or 50gsm to 250gsm is average Base weight.

Technique as detailed below is described in detail, and top flat web 240 and acquisition layer 52 are mechanically deformed and combined simultaneously Together forming top flat/acquisition layer lamilate web 2450.Top flat/acquisition layer lamilate web 2450 forms absorbent article 20 In top flat/acquisition layer lamilate 245.Top flat/acquisition layer lamilate 245 includes forming the mechanically deform of three-dimensional protuberance 250 Portion.Mechanically deform portion to top flat/acquisition layer lamilate 245 provides three-dimensional structure.

Absorbent article 20 may include the elasticized gasketing cuff 32 being present between top flat 24 and egative film 25 and uprightly intercept leg Hoop 34.Fig. 1,4 and 5 is also shown for other typical diaper components, and such as including the fastening system of securing tabs 42, the fastening is dashed forward Piece is attached towards the back edge 12 of absorbent article 20 and the leading edge 10 towards absorbent article 20 coordinates with touch-down zone 44.Absorbent article 20 may also comprise other typical components not shown in accompanying drawing, such as after elastic waist structure, front elastic waist structure, one or Multiple horizontal obstruct hoops, lotion applications etc..

As shown in fig. 7, intercept leg cuff 34 can by be joined to absorbent article 20 remainder (usually top flat 24 and/or Egative film 25) proximal 64 and free end edge define, it is intended to that seal is contacted and formed with the skin of wearer.Intercept Leg cuff 34 can be engaged at proximal 64 by binding part 65, and the binding part can for example pass through adhesives, fusion bonding Or the combination of known adhesive method is made.Each intercept leg cuff 34 may include one, two or more elastic filaments 35 with Better seal is provided.Lining ring hoop 32 can be placed on laterally outside relative to leg cuff 34 is intercepted.Lining ring hoop 32 can be provided and enclosed Around the better seal of wearer's thigh.Generally each gasketing leg cuff 32 will be including one or more elastic filaments or flexible member 33, such as between the top flat 24 and egative film 25 in the region of leg opening.

When absorbent article 20 is in flat condition, absorbent article 20 also hypothetically can be divided into by axis of pitch 90 to be had Along the proparea and back zone of the equal length of longitudinal axis measurement.The axis of pitch 90 perpendicularly to the longitudinal axis 80 of the absorbent article, And it is placed at 1/2nd length of absorbent article 20.The length of absorbent article 20 can be along longitudinal axis 80 from absorption system The leading edge 10 of product 20 is measured to back edge 12.Top flat 24, acquisition layer 52, Distribution Layer 54 and absorbent cores 28 each have width, The width can be measured from their corresponding transverse edges and parallel to axis of pitch 90.

Absorbent article 20 is divided into proparea 36, back zone 38 and between the proparea and back zone of absorbent article 20 with being supposed to Crotch region 37.Proparea, back zone and crotch region are respectively the 1/3 of the length of absorbent article 20.Absorbent article may also comprise the He of front auricle 46 Auricle 40 afterwards, as known in the art.

The absorbent cores 28 of the present invention may include absorbing material 60, and the absorbing material is that cellulose fibre is (so-called " ventilative Felt ") and super-absorbent polymer blend, the blend in being encapsulated in particle form in one or more substrates, referring to Such as US 5,151,092 (Buell).Alternatively, absorbent cores 28 can be free of airfelt, as detailed below.

In general, such as observe from the top side face of absorbent cores 28, absorbent cores 28 can be limited by the periphery of such as lower floor, the layer by Absorbing material 60 in core wrappage 160 is formed.Absorbent cores 28 can using variously-shaped, particularly shown so-called " dog bone " or " hourglass " shape, it is shown along its width towards the tapered of the middle part of core or " crotch " area.So, absorbent cores 28 are being intended to be placed in suction Receiving can have the width of opposite, narrow in the region of the absorbent cores 28 in the crotch region of product.This can provide for example preferably comfortable and easy to wear Property.Therefore, absorbent cores 28 can have a following width (as transversely measured) at its most narrow point, the width be less than about 100mm, 90mm, 80mm, 70mm, 60mm are even less than about 50mm.Absorbent cores 28 are alternatively substantially rectangular, as shown in such as Fig. 5, but Also other deposition regions, such as " T " or " Y " or " hourglass " or " dog bone " shape can be used (see such as Fig. 4).

Some parts of absorbent article 20 are will be discussed in now.

" without airfelt " absorbent cores 28

The absorbent cores 28 of the present invention may include the absorbing material 60 being encapsulated in core wrappage 160.By absorbing material 60 Gross weight meter, absorbing material 60 may include 80% to 100% SAP, such as SAP particles.For assessment SAP in absorbent cores 28 The purpose of middle percentage, core wrappage 160 is not qualified as absorbing material 60.

So-called " absorbing material ", refers to the material with least some absorption characteristic and/or liquid retention performance, such as The synthetic fibers that SAP, cellulose fibre and some Jing hydrophilies are processed.The adhesive for being commonly used for preparing absorbent cores does not have There is absorption characteristic, and be not qualified as absorbing material.SAP contents can be by the interior absorbing material 60 for including of core wrappage 160 Weight be substantially higher than 80%, for example, at least 85%, at least 90%, at least 95% and even up to and including 100%. The ventional absorption of the cellulose fibre compared to the SAP generally included between 40%-60% and between 40%-60% Core, the above-mentioned SAP contents for being substantially higher than 80%SAP can provide relatively slim absorbent cores 28.The absorbing material 60 of the present invention can Specifically include less than 10% percentage by weight, or less than the natural fiber and/or synthetic fibers of 5% percentage by weight, or very To being substantially free of natural fiber and/or synthetic fibers.Absorbing material 60 can advantageously comprise few cellulose fibre or not wrap Include cellulose fibre, specifically based on the weight of absorbent cores 28, absorbent cores 28 may include less than 15%, 10%, or 5% (thoroughly Gas felt) cellulose fibre, or or even it is substantially free of cellulose fibre.Such absorbent cores 28 can be relatively slim, and thin In conventional breathable felt core.Fig. 1, Fig. 2 and Fig. 3 are the illustration of the absorbent article 20 for including " without airfelt " absorbent cores 28.

Past had proposed " not containing airfelt " absorbent cores with the design of various absorbent cores comprising relatively high amount SAP 28, see, for example, US 5,599,335 (Goldman), EP1447066A1 (Busam), WO95/11652 (Tanzer), US2008/0312622A1 (Hundorf) and WO2012/052172 (Van Malderen).

The absorbent cores 28 of the present invention may include such as adhesive to help that SAP is fixed in core wrappage 160, and/ Or guarantee the integrality of core wrappage 160, specifically when core wrappage 160 is made up of one or more substrates.Core is wrapped up Thing 160 comprising the region needed for absorbing material 60 generally by than strictly extending on bigger region in it.

Core wrappage

Absorbing material 60 is encapsulated in one or more substrates.Core wrappage 160 includes the top side face towards top flat 24 16 and towards the bottom side 16 of egative film 25.Core wrappage 160 can be made up of the single substrate folding around absorbing material 60.Core bag Wrap up in that thing 160 can (one main to provide top side face 16 and another mainly provides bottom side by two substrates being attached to one another 16 ') make, as Fig. 2 exemplarily shown in.Typical configurations are so-called C-shaped wrappage and/or sandwich wrappage.In C- parcels In thing, as illustrated in Fig. 6, the longitudinally and/or laterally edge of a substrate is just folded with shape on another substrate Into flank.Then these fins are bonded to the outer surface of another substrate, generally by using adhesives.It is close compared to sandwich Sealing, so-called C-shaped wrappage construction can provide beneficial effect, the fracture-resistant for such as improving under wetting stress state.

Core wrappage 160 can be formed by any material suitable for receiving and accommodating absorbing material 60.Core wrappage 160 can Specifically formed by nonwoven webs, such as carded nonwoven, spunbonded non-woven fabrics (" S ") or meltblown nonwoven fabric The lamilate of (" M ") and any these materials.For example, melt spun polypropylene supatex fabric is suitable, is specifically had Laminated web SMS or SMMS or SSMMS structures, and those with about 5gsm to 15gsm basis weight ranges.Suitable material E.g., as disclosed in US 7,744,576, US2011/0268932A1, US2011/0319848A1 or US2011/0250413A1. Can use by synthetic fibers provide non-woven material, such as polyethylene (PE), PET (PET), especially It is polypropylene (PP).

Including " not containing airfelt " absorbent cores 28 in the region 26 for being substantially free of absorbing material

Absorbent cores 28 may include the absorbing material deposition region 8 limited by the periphery of such as lower floor, and the layer is by core wrappage 160 Interior absorbing material 60 is formed.

Absorbent cores 28 may include to be substantially free of the area that one or more of absorbing material 60 are substantially free of absorbing material Domain 26, and by the region, a part for the top side face 16 of core wrappage 160 is by one or more core wrappage binding parts A part for 27 bottom sides 16 ' for being attached to core wrappage 160, as illustrated in Figures 5 and 6.Specifically, can not deposit in that region In absorbing material 60.The a small amount of such as pollutant with absorbing material 60 being likely to occur in the fabrication process is not qualified as inhaling Receive material.One or more regions 26 for being substantially free of absorbing material advantageously can be limited by absorbing material 60, it means that One or more regions 26 for being substantially free of absorbing material are not extend to any edge of absorbing material deposition region 8.

If the region 26 for being substantially free of absorbing material extends to any edge of absorbing material deposition region 8, often It is individual be substantially free of the region 26 of absorbing material and can be substantially free of on the either side in the region 26 of absorbing material at each have The region of absorbing material 60.

Absorbent cores 28 may include at least two regions 26 for being substantially free of absorbing material, and they are symmetrically disposed in absorption On the both sides of the longitudinal axis of core 28, as shown in Figure 5.

One or more be substantially free of absorbing material regions 26 can for it is straight and completely machine-direction oriented and parallel to Longitudinal axis, but be alternatively bending or with one or more sweeps.

Additionally, the risk in order to reduce liquid body exudates seepage, the region 26 for being substantially free of absorbing material is favourable Ground does not extend up to any edge of absorbing material deposition region 8, and therefore is enclosed by the absorbing material deposition region 8 of absorbent cores 28 Around and encompassed completely in absorbing material deposition region.Generally, region 26 and the absorbing material of absorbing material are substantially free of Minimum range between the nearest edge of deposition region 8 is at least 5mm.

" not containing airfelt " absorbent cores 28 including the region 26 without absorbing material in sheet were proposed, see, for example, European patent application 12196341.7.

When absorbing material 60 absorbs liquid and starts swelling, absorption is substantially free of along one or more in absorbent cores 28 One or more passages 26 ' in the region 26 of material can be initially formed.As absorbent cores 28 absorb more liquid, by one or many The recess in absorbent cores 28 that individual passage 26 ' is formed will become deeper and be easier to be seen and touch.Passage 26 ' Formation also can be used to indicate that absorbent article 20 has been loaded with liquid body exudates.Core wrappage binding part 27 should at least inhaled Keep essentially completed during the first stage for receiving the liquid body exudates that material 60 absorbs moderate.

As shown in fig. 7, when absorbing material is swelling, core wrappage binding part 27 is attached at substantially when keeping at least initial In region 26 without absorbing material.Absorbing material 60 in the remainder of absorbent cores 28 is swelling when it absorbs liquid, makes Obtain core wrappage 160 and therefore form passage along the region 26 for being substantially free of absorbing material for including core wrappage binding part 27 26’。

The technique for preparing the absorbent article with top flat/acquisition layer lamilate web

The invention provides the top flat with three-dimensional structure/acquisition layer lamilate 245.

A kind of technique 100 for preparing absorbent article 20 comprises the steps：There is provided what is essentially continuously extended along longitudinal direction Liquid permeable top flat web 240, top flat web 24 has first surface and second surface；Essentially continuously prolong along longitudinal direction The egative film web 2555 of the liquid impermeable stretched；With the acquisition layer 52 with first surface and second surface.Work as absorbent article 20 when in use, and the first surface of top flat web 24 will face the body of wearer.Therefore top flat web 240 and top flat 24 and adopt Collection layer 52 includes fiber.

By top flat web 240 and acquisition layer 52 with the alignment of face-to-face relation so that the second surface contact of top flat web 240 The first surface of acquisition layer 52.Top flat web 240 and acquisition layer 52 are mechanically deformed and are combined simultaneously.Top flat web 240 and acquisition layer 52 be nested together so that the most of three-dimensional protuberance being formed in top flat web 240 is adopted with being formed at Most of three-dimensional protuberance in collection layer 52 overlaps and fits together, so as to provide the top flat with three-dimensional protuberance 250/adopt Collect fit web 2450 layer by layer.Top flat web 240 and acquisition layer 52 be this means by mechanically deformation and combination simultaneously is one Rise.Top flat/acquisition layer lamilate web 2450 has the first surface of the second surface for including acquisition layer 52.

A part for egative film web 2555 is joined to the one of the top flat web 240 of top flat/acquisition layer lamilate web 2450 Part so that the first surface of top flat/acquisition layer lamilate web 2450 faces egative film web 2555.

Preparing the technique 100 of absorbent article 20 may include to provide dry-laying fibre structure or wet laid fibrous structure Step, as shown in Figure 8.

As shown in figure 8, top flat web 240 and acquisition layer 52 are mechanically deformed between the first roller 211 and the second roller 212 And combine, to form top flat/acquisition layer lamilate web 2450.The dry-laying fiber 540 of dry-laying fibre structure is (as schemed Shown in 8, provided by distribution material feeding machine 210) or wet laid fibrous structure can be deposited over top flat/acquisition layer lamilate width On the first surface of material 2450 or egative film web 2555.

The a part of engageable top flat web 240 to top flat/acquisition layer lamilate web 2450 of egative film web 2555 A part so that dry-laying fibre structure or wet laid fibrous structure are located at top flat/He of acquisition layer lamilate web 2450 Between egative film web 2555.

Dry-laying fibre structure may include dry-laying fiber 540.Dry-laying fibre structure may include with superabsorbent The mixture of pinching compound (SAP) and dry-laying fiber.Dry-laying fiber may include that intrafiber crosslink joins cellulose fibre.

The step of technique may also include offer absorbent cores 28, the absorbent cores include absorbing material 60.By absorbing material 60 Gross weight meter, absorbing material 60 may include 80% to 100% SAP, such as SAP particles.

Another type of absorbing material may be based on the absorbent foam of the cross-linking monomer comprising acidic-group, referring to example Such as the 97/31971 99/44648 Al and Al of WO 00/52087 of Al, WO of B1, WO of EP 0 858 478.

Therefore, the first surface of top flat/acquisition layer lamilate 245 can carry the material of Distribution Layer 54 or the suction of absorbent cores 28 Receive material 60.

Most of three-dimensional protuberances 250 can be that in top flat/acquisition layer lamilate web 2450 or top flat/acquisition layer is laminated Three-dimensional protuberance 250 in body 245 it is more than 50% or more than 60% or more than 70% or more than 80% or more than 90% or super Cross 95% or more than 98%.

Absorbent article 20 may include lining ring hoop 32.The most of three-dimensional protuberance 250 of top flat/acquisition layer lamilate 245 can Present at least in the region Chong Die with acquisition layer 52 of the top flat 24 in wherein top flat/acquisition layer lamilate 245.In addition, top flat/ The most of three-dimensional protuberance 250 of acquisition layer lamilate 245 also is present in acquisition layer 52 and top flat 24, be present in parallel to In the region that the axis of pitch 90 of absorbent article 20 extends.The most of three-dimensional protuberance 250 of top flat/acquisition layer lamilate 245 In may be present in following region, the region extends parallel to the longitudinal axis 80 of absorbent article 20, but is not extended past wherein serving as a contrast Circle hoop 32 is attached to the region of absorbent article 20 (being specifically attached to top flat 24), as shown in Figure 1.In said case, formed Most of three-dimensional protuberance 250 in the top flat 24 of top flat/acquisition layer lamilate 245 is formed by the fiber of top flat 24.

Alternatively, the most of three-dimensional protuberance 250 of top flat/acquisition layer lamilate 245 may be present in following region, should Region extends parallel to the axis of pitch 90 of absorbent article 20 so that the region and acquisition layer including the three-dimensional protuberance of top flat 24 52 overlap.The length in the region of the most of three-dimensional protuberance 250 of top flat/acquisition layer lamilate 245 is than top flat/collection layer by layer The length wide 5% to 60% or 10% to 40% of fit 245 acquisition layer 52.The great majority three of top flat/acquisition layer lamilate 245 Dimension protuberance may be present in following region, and the region extends parallel to the longitudinal axis 80 of absorbent article 20 so that including top The region of the most of three-dimensional protuberance of piece 24 is overlap with acquisition layer 52.The most of three-dimensional of top flat/acquisition layer lamilate 245 is dashed forward Go out the width wide 5% to 60% or 10% of the acquisition layer 52 of the width comparable top flat/acquisition layer lamilate 245 in the region in portion 250 To 40%.In said case, the most of three-dimensional protuberance 250 being formed in the top flat 24 of top flat/acquisition layer lamilate 245 Formed by the fiber of top flat 24.

In another kind of alternative form, the most of three-dimensional protuberance 250 of top flat/acquisition layer lamilate 245 can be only existed Top flat 24 in wherein top flat/acquisition layer lamilate 245 position Chong Die with acquisition layer 52, as shown in Figure 4.

Therefore, most of three-dimensional protuberances 250 can provide depth impression, and can support the perception of caregiver：Absorb system Product 20 can well absorb liquid body exudates.

According to " protuberance method for testing height " as described below, the most of three-dimensional of top flat/acquisition layer lamilate 245 is dashed forward Going out portion 250 can have the protuberance height of measurement of 0.3mm to 5mm or 0.5mm to 3mm or 1.0mm to 2.0mm.

According to " protuberance base widths method of testing " as described below, the great majority three of top flat/acquisition layer lamilate 245 Dimension protuberance 250 can have 0.5mm to 10mm or 0.5mm to 5mm or 0.5mm to 3.0mm or 1.0mm to 2.5mm or 1.5mm extremely The protuberance base widths of the measurement of the three-dimensional protuberance 250 of 2.5mm.

Depth impression can be provided with the most of three-dimensional protuberance 250 including certain height and the shape of width, and The perception of caregiver can be supported：Absorbent article 20 can well absorb liquid body exudates.

These three-dimensional protuberances 250 provide voidage to receive liquid body exudates.Meanwhile, top flat/collection is layer by layer Top flat 24 and acquisition layer 52 in fit 245 can be in close contact, because top flat 24 and acquisition layer 52 are nested together.In addition, It is Distribution Layer 54 that top flat/acquisition layer lamilate 245 is also in close contact cutting optimal.Therefore, liquid body exudates are by more effectively Transmit to Distribution Layer 54 from top flat/acquisition layer lamilate 245, which improve top flat/acquisition layer lamilate 245 top flat 24 it is dry Dry degree.Bleeding back at wearer's skin is reduced.Top flat/acquisition layer lamilate 245 also allows for more efficiently using absorbent cores 28.Generally speaking, the top flat 24 of top flat/acquisition layer lamilate 245 can be relative to the three-dimensional top flat being placed on acquisition layer 52 24 have the aridity for improving.

Most of three-dimensional protuberances 250 may include the void area 253 for not contacting wearer's skin.Compared to flat top Piece, absorbent article 20 can less contact wearer's skin.The void area 253 of top flat/acquisition layer lamilate 245 can help air Permeate between wearer's skin and top flat/acquisition layer lamilate 245.Therefore, the interstice coverage of top flat/acquisition layer lamilate 245 Domain 253 can improve the gas permeability of top flat/acquisition layer lamilate 245.

In addition to improving aridity, the void area 253 of top flat/acquisition layer lamilate 245 also allows for excrement and is inhaled Receive and gather in void area.In said case, the present invention is suitable to absorb relatively low viscous excrement.

Top flat 24 and acquisition layer 52 in top flat/acquisition layer lamilate 245 can be intimate contact with one another.

The width of acquisition layer 52 is less than the width transversely of top flat 24.Including longitudinal axis 80 and perpendicularly to the longitudinal axis In the absorbent article 20 of 80 axis of pitch 90, width of the acquisition layer 52 along the direction parallel to axis of pitch 90 is less than top flat 24 Along the width in the direction parallel to axis of pitch 90.If top flat 24 is identical with the width of acquisition layer 52, may be in lining ring hoop There is the wicking of liquid body exudates below 32.Therefore, liquid body exudates may not suitably be inhaled by absorbent cores 28 Receive, this causes liquid body exudates to leak out absorbent article 20.If the width of acquisition layer 52 is less than top flat 24 transversely Width, then acquisition layer 52 (its can from top flat 24 receive liquid body exudates) can directly by liquid body exudates transmit to divide With layer 54 subsequently to be absorbed by absorbent cores 28.Therefore, it is temporarily stored in the acquisition layer 52 of top flat/acquisition layer lamilate 245 In liquid body exudates will be easily detected by capillary force and aspirate and be drawn into below the lining ring hoop towards lining ring hoop 32. Therefore by making the width of acquisition layer 52 top flat 24 in top flat/acquisition layer lamilate 245 is less than along parallel to axis of pitch 90 Direction width, seepage can be reduced.

In order to help reduce seepage and bleed back, the width of the acquisition layer 52 of top flat/acquisition layer lamilate 245 can be unlike distribution The wide width width more than 40% and/or unlike absorbent cores 28 along the direction parallel to axis of pitch 90 of width of layer 54 exceedes 20%.In said case, liquid body exudates can not be at the transverse edge of acquisition layer or adjacent to the widthwise edge of acquisition layer Edge is gathered.This prevent liquid body exudates to wick into below lining ring hoop 32.In fact, working as top flat/acquisition layer lamilate 245 acquisition layer 52 is wider than the width of absorbent cores 28 when being less than 20%, and liquid body exudates can be readily transmitted suction In receiving core 28, this effectively can be drawn into fluid in absorbent cores 28 from acquisition layer 52.This prevent liquid body exudates from Acquisition layer 52 is wicked into below lining ring hoop 32.

Acquisition layer 52 can receive the liquid body exudates through top flat 24, and can distribute them to following absorption Layer.In this case, the top flat 24 in top flat/acquisition layer lamilate 245 can have the hydrophily weaker than acquisition layer 52.Top The top flat 24 of piece/acquisition layer lamilate 245 can be easily dehydrated.

In order to strengthen the dehydration of the top flat 24 of top flat/acquisition layer lamilate 245, the pore-size of acquisition layer 52 can be reduced. For this purpose, acquisition layer 52 can be made up of the fiber with relative denier.Acquisition layer 52 can also have the density of increase.

The technique may include following steps：Transversely top flat/acquisition layer lamilate web 2450 first surface horizontal stroke The part engagement of egative film web 2555 is arrived the part of top flat web 240 to edge or the neighbouring transverse edge.Top flat/collection Layer by layer the transverse edge of the first surface of fit web 2450 does not include any acquisition layer 52.When the part of egative film web 2555 connects During the part of the top flat web 240 for closing top flat/acquisition layer lamilate web 2450, acquisition layer 52 thus be encapsulated in top flat width Between material 240 and egative film web 2555.

The technique may include the step of cutting into single absorbent article, and the absorbent article includes egative film 25, top flat 24 and adopts Collection layer 52, it is characterised in that top flat 24 and acquisition layer 52 engage to form top flat/acquisition layer lamilate 245.

Top flat/acquisition layer lamilate web 2450 can be in process equipment specific location prepare.Therefore, top flat/adopt Layer by layer fit web 2450 may not be used for carrying the dry-laying fibre of Distribution Layer 54 at the desired position of technique collection The dry-laying fiber 540 of dimension structure.

A kind of technique for preparing absorbent article comprises the steps：There is provided the liquid essentially continuously extended along longitudinal direction can Through top flat web 240, top flat web 240 there is first surface and second surface；Essentially continuously extend along longitudinal direction The egative film web 2555 of liquid impermeable；Acquisition layer 52 with first surface and second surface；Dry-laying fibre structure And the carrier layer web 170 with first surface 171 and second surface 172, as shown in Figures 9 and 10.Top flat web 240 and adopt Collection layer 52 includes fiber.

Top flat web 240 and acquisition layer 52 are alignd with acquisition layer 52 with face-to-face relation so that the second of top flat web 240 Surface contacts the first surface of acquisition layer 52.Top flat web 240 and acquisition layer 52 are mechanically deformed and are combined simultaneously. Top flat 24 and acquisition layer 52 are nested together so that the most of three-dimensional protuberance being formed in top flat 24 be formed at collection Most of three-dimensional protuberance in layer 52 overlaps and fits together, so as to provide the top flat/collection with three-dimensional protuberance 250 Layer by layer fit 245.The width of acquisition layer 52 is less than the width transversely of top flat 24.Top flat/acquisition layer lamilate 245 has to be included The first surface of the second surface of acquisition layer 52.

The dry-laying fiber 540 of dry-laying fibre structure is deposited on into the first surface 171 of carrier layer web 170 On, as shown in Figures 9 and 10.A part for egative film web 2555 is joined to the top flat width of top flat/acquisition layer lamilate web 2450 A part for material 240 so that the second surface 172 of carrier layer web 170 is towards top flat/acquisition layer lamilate web 2450 or bottom Piece web 2555.

Therefore, in the process, no matter wherein prepare and provide top flat/acquisition layer lamilate web 2450, carrier Layer web 170 can there carry the material of Distribution Layer 54.

According to the method for preparing the three-dimensional structure of top flat/acquisition layer lamilate web 2450, when the He of top flat web 240 When acquisition layer 52 is mechanically deformed together, hole may be by mistake produced.When Distribution Layer 54 includes dry-laying fibre structure, The dry-laying fiber 540 of dry-laying fibre structure may pass through at gained top flat/acquisition layer lamilate 245 formed be not intended to Hole, and inadvisable the skin for contacting wearer.Expect to prevent the dry-laying fiber 540 of dry-laying fibre structure from wearing Cross the unintentionally hole of gained top flat/acquisition layer lamilate 245.

Carrier layer web 170 may be provided at top flat/between acquisition layer lamilate web 2450 and dry-laying fibre structure, As shown in Figure 9.In absorbent article 20, carrier layer 17 may act as barrier layer to prevent the dry-laying of dry-laying fibre structure Through the hole of top flat/acquisition layer lamilate 245, the hole is three-dimensional by mistake by top flat 24 together with acquisition layer 52 to fiber 540 What mechanically deform was formed, as shown in Figure 11 and 12 (A-B).In addition, carrier layer 17 is also assisted in liquid body exudates from top Piece/acquisition layer lamilate 245 is transferred to dry-laying fibre structure.

The first surface 171 of the carrier layer 17 in absorbent article 20 can be at its longitudinal edge or attached adjacent to its longitudinal edge It is connected to absorbent cores 28.Therefore, when carrier layer 17 is arranged on top flat/between acquisition layer lamilate 245 and dry-laying fibre structure, And when the first surface 171 of carrier layer 17 is attached to absorbent cores 28, the dry-laying fiber 540 of dry-laying fibre structure can Can reach and be escaped between carrier layer 17 and absorbent cores 28, as Figure 12 B are illustrated.Carrier layer 17 is to the vertical of absorbent cores 28 The extrorse discontinuous patterning for being attached the adhesive phase 173, adhesive that may include uniformly continuous applies or a series of only Vertical adhesive line, adhesive helix or adhesive spots.

Alternatively, carrier layer web 170 may be provided between dry-laying fibre structure and absorbent cores 28, such as Figure 10 institutes Show.Therefore, the carrier layer 17 in absorbent article 20 can help distribute and be transferred to suction from Distribution Layer 54 by liquid body exudates Core 28 is received, as shown in Figs. 13 and 14, this allows more effectively to utilize absorbent cores 28.

Carrier layer 17 can or neighbouring its longitudinal edge be attached to the first surface of top flat/acquisition layer lamilate 245.Cause This, when carrier layer 17 is arranged between dry-laying fibre structure and absorbent cores 28, and carrier layer 17 is attached to top flat/collection Layer by layer during fit 245 first surface, the dry-laying fiber 540 of dry-laying fibre structure may not be in top flat/adopt Collection is escaped layer by layer between fit 245 and carrier layer 17.Carrier layer 17 is to the vertical of the first surface of top flat/acquisition layer lamilate 245 Extrorse attachment may include that the adhesive phase of uniformly continuous, the discontinuous patterning of adhesive apply or a series of independences are viscous Mixture line, adhesive helix or adhesive spots.

The technique may include the step of cutting into single absorbent article 20, the absorbent article include egative film 25, carrier layer 17, Top flat 24 and acquisition layer 52, it is characterised in that top flat 24 and acquisition layer 52 engage to form top flat/acquisition layer lamilate 245.

The acquisition layer 52 of top flat/acquisition layer lamilate web 2450 can be along arranging with being longitudinally continuous.Top flat/acquisition layer is laminated Length of the acquisition layer 52 of body 245 along the direction parallel to longitudinal axis 80 can be equal to top flat 24 along parallel to longitudinal axis 80 The length in direction.

Alternatively, the acquisition layer 52 of top flat/acquisition layer lamilate web 2450 can discontinuously be arranged along longitudinal direction.Top flat/adopt Collect length of the acquisition layer 52 of zoarium 245 layer by layer along the direction parallel to longitudinal axis 80 and be smaller than top flat 24 along parallel to longitudinal direction The length in the direction of axis 80, as shown in Figure 1.When the length of the acquisition layer 52 in top flat/acquisition layer lamilate 245 is less than top flat During 24 length, liquid body exudates can not be aspirated by the longitudinal edge 10,12 easily towards absorbent article 20, this reduction Seepage.

The acquisition layer 52 of top flat/acquisition layer lamilate 245 can be positioned in the proparea 36 of absorbent article 20 and at least In being partially positioned at crotch region 37, as shown in figure 15.In said case, by the acquisition layer 52 of top flat/acquisition layer lamilate 245 Being positioned in the proparea 36 of absorbent article 20 contributes to being gathered around the urine point of wearer and distributes liquid body exudates such as Urine.

The acquisition layer 52 of top flat/acquisition layer lamilate 245 can be positioned in the back zone 38 of absorbent article 20 and at least In being partially positioned at crotch region 37, as shown in figure 16.The acquisition layer 52 of top flat/acquisition layer lamilate 245 is positioned at into absorption system Contribute to gathering the excrement of wearer in the back zone 38 of product 20, especially when excrement has low viscosity.

When absorbent article when in use, the most of three-dimensional protuberance 250 of top flat/acquisition layer lamilate 245 can be towards egative film 25 or towards wearer body project.

Most of three-dimensional protuberances 250 can combine to form one or more figures.The sense of caregiver can be supported with figure Know：The absorbent article can well absorb liquid body exudates.

In addition, most of three-dimensional protuberances 250 may also be combined with to form one or more figures such as logo, for example Pampers Heart logos.

Top flat/acquisition layer lamilate 245 is divided into first area and second area with being supposed to.First area may include court The three-dimensional protuberance 250 that egative film 25 is projected.Second area may include when absorbent article is projected when in use towards the body of wearer Three-dimensional protuberance 250.

For example, first area can be positioned in the proparea 36 of absorbent article 20 and be positioned at least partially at crotch region 37 In.

Projected towards egative film 25 by the three-dimensional protuberance 250 with first area, wherein top flat/acquisition layer lamilate 245, Can help gather liquid body exudates and liquid body exudates be absorbed to absorbent cores 28.By with second area, its In when absorbent article when in use top flat/acquisition layer lamilate 245 three-dimensional protuberance 250 towards wearer body project, can Improve body not by the effect of effluent pollution.Therefore, the combination of first area and second area can allow absorbent article 20 more Play a role well.

The top flat 24 of top flat/acquisition layer lamilate 245 can be coated with detergent composition.Detergent composition can be located at top flat/ In the region of the top flat 24 between the three-dimensional protuberance 250 of acquisition layer lamilate 245.

Typical detergent composition for diaper is disclosed in United States Patent (USP) 6,426,444B2.Gained detergent composition can Top flat/acquisition layer lamilate is applied in the following way：Spraying, printing (for example, flexible version printing), coating (for example, are contacted Dip coating, intaglio plate coating), extrusion, microencapsulation or these apply technologies combination.

Most of three-dimensional protuberances 250 can with any suitable arrangement across top flat/acquisition layer lamilate 245 plane Arrange.Suitable arrangement is included but is not limited to：Interlaced arrangement structure, He Qu.In some cases, top flat/collection is layer by layer Fit 245 can simultaneously include three-dimensional protuberance 250 and further feature portion such as embossed portion and hole known in the art.Three-dimensional is prominent Portion 250 and further feature portion can be located in independent zones, can mix or overlap.Mixing arrangement can produce in any suitable manner It is raw.In some cases, mixing arrangement can be by using the A1 of U.S. Patent Publication US 2012/0064298 (Orr et al.) Described in technology producing.In other cases, the arrangement of overlap can be produced in the following way：Form three-dimensional prominent Portion 250, subsequently makes top flat/acquisition layer lamilate 2450 thereon between the formed parts with convex forming element and flexible surface Pass through, and apply pressure to the web with formed parts and flexible surface.These are used to produce the arrangement of overlap Technology allows three-dimensional protuberance 250 and further feature portion to combine, therefore they are arranged on top flat/acquisition layer lamilate 245 In diverse location, or they can cause in three-dimensional protuberance 250 at least some and further feature portion (hole, embossed portion) in At least some is arranged in the same position on top flat/acquisition layer lamilate 245.

Carrier layer

Carrier layer 17 may be selected from the group being made up of following item：Non-woven material, thin paper or film and combinations thereof.

Example for the nonwoven webs of carrier layer 17 may include various types of known nonwoven webs, such as spunbond Nonwoven webs, melt blown nonwoven web and spunbond-melt blown-spunbond nonwoven webs.These nonwoven webs are by thermoplastic poly Compound is made.

Material for constituting the fiber of the nonwoven webs for carrier layer 17 may include various types of known fibers, Such as polyethylene, polypropylene, polyester and acryloyl group conjugate fibre such as polyethylene/polypropylene, polyethylene/poly- terephthaldehyde Sour second diester and polypropylene/PET, i.e., the fiber for being formed by core-sheath fiber and bilateral fibre.It is fine Dimension can be used alone or use in a joint manner.In addition, carrier layer 17 can also have single layer structure or sandwich construction.

Carrier layer 17 may include the thin paper by made by wet laid cellulose, and the wet laid cellulose includes having according to " wet The cellulose fibre and combinations thereof of " wet burst strength " of the 50g to 500g of Burst Strength Test Method ".

Carrier layer 17 can Jing surfactants process so that carrier layer 17 becomes hydrophilic.Carrier layer 17 can be by as above institute A kind of material stated in group is made, and the material has been chemically modified hydrophilic to become.Hydrophilic carrier layer 17 can Therefore the transfer of absorbent cores 28 of the liquid body exudates from Distribution Layer 54 to absorbent article 20 is improved.

Carrier layer 17 can have at least 5gsm to 60gsm or at least 5gsm to 20gsm or at least base of 5gsm to 15gsm Weight.

Carrier layer 17 can be coloring.The technique may include the step of providing the carrier layer of coloring.Pigment coloring can be passed through Color is given to carrier layer 17.Term " pigment coloring " includes being applied to any face that nonwhite color is given to carrier layer 17 Material.Therefore the term does not include " white " pigment such as TiO₂, the pigment be usually added in the layer of conventional absorbent article with Give their white appearances.Pigment is usually dispersed in chromatophore or substrate when applying, be for example such as applied in ink, paint, In plastics or other polymeric materials like that.

Pigment can be for example incorporated into polypropylene masterbatch.Masterbatch includes the pigment of the high concentration being dispersed in mounting medium And/or additive, the pigment and/or additive and then can be used to colour or be modified as double groups for colouring by natural polymeric material Divide non-woven material.One example of the suitable color concentrate material that can be mixed is the Sanylen of Pantone colors 270 The ex Clariant of violet PP 42000634, it is a kind of PP resins with high concentration violet pigment.Generally, by carrier The weight meter of layer 17, the amount of pigment for being mixed can be 0.3%-2.5%.

Alternatively, color can be given to carrier layer 17 by the way that colouring agent is impregnated into substrate.Can such as gather in substrate Colouring agent such as dyestuff, pigment or combination are impregnated in the formation of compound, resin or non-woven material.For example, can be in film, fiber Or add a colorant to during long filament formation in the melt batch materials of polymer.

When absorbent article 20 is observed from top flat, the carrier layer 17 of coloring can to caregiver enhanced depth impression is provided with Such impression that support is given by three-dimensional protuberance 250, as long as the carrier layer 17 of coloring is visible from top flat 24.Therefore, The carrier layer 17 of color can support the perception of caregiver：The absorbent article can well absorb liquid body exudates.

For the same reason, the top flat 24 and/or acquisition layer 52 of top flat/acquisition layer lamilate 245 can be coloring.

Carrier layer 17 can be porous, can have relatively high permeability, and when the suction pressure in such as 20cm water columns With relatively high saturation levels when being exposed to fluid under power.The relatively high saturation levels of carrier layer 17 can be defined as Ratio between the volume of the liquid body exudates in the hole of carrier layer 17 and the total void volume of carrier layer 17.Carrier layer 17 can help provide the connectedness between the acquisition layer 52 and Distribution Layer 54 of top flat/acquisition layer lamilate 245.

In addition, carrier layer 17 may also include the hole of some relative small sizes so that the dry-laying fiber knot of Distribution Layer 54 The dry-laying fiber 540 of structure can be partially across the hole of carrier layer.Therefore, the dry-laying fiber of dry-laying fibre structure 540 can knit and contact the acquisition layer 52 of top flat/acquisition layer lamilate 245.Carrier layer 17 may include with 0.02mm to 10mm Size hole.

Mechanically deform portion and gained three-dimensional protuberance

Mechanically deform together with acquisition layer 52 to by top flat 24 and may include the step of combining related technique 100 following Step：There is provided first and be intermeshed the intermeshing roller 212 of roller 211 and second, as shown in Figure 17,18A and 18B.

First intermeshing roller 211 of equipment 200 may include multiple ridges 215 and respective slot 216, and the ridge and groove enclose Circumference around the first intermeshing roller 211 substantially extends incessantly.

Second intermeshing roller 212 may include to be improved to the multiple rows of circumferentially extending of multiple rows of circumferentially-spaced tooth 217 opened Ridge and respective slot 218, wherein multiple rows of circumferentially-spaced tooth 217 opened in spaced relation around second intermeshing roller 212 at least a portion extends.

Top flat web 240 and acquisition layer 52 can be between the first intermeshing intermeshing rollers 212 of roller 211 and second mutually Mesh together so that the ridge 215 of the first intermeshing roller 211 is extended in the groove 218 of the second intermeshing roller 212, and And second the tooth 217 of intermeshing roller 212 extend in the groove 216 of the first intermeshing roller 211, so as to form top flat/adopt Collect zoarium 245 layer by layer.Therefore, the multiple variant parts including three-dimensional protuberance 250 are obtained.

The three-dimensional protuberance 250 of top flat/acquisition layer lamilate 245 can only be formed at wherein top flat/acquisition layer lamilate 245 In the position Chong Die with acquisition layer 52 of top flat 24.

The first intermeshing intermeshing roller 212 of roller 211 and second can further by the high TH of tooth, pitch P and depth of engagement E Limit, as shown in Figure 18 A.The high TH of tooth can be from the top measurement on the surface to tooth 217 of the second intermeshing roller 212.The high TH of tooth can In the range of 0.5mm to 10mm or 0.5mm to 5mm.

Pitch P can be defined as tooth to space width, and it is from the top of the first tooth of the second intermeshing roller 212 to second The top measurement of tooth.First tooth and the second tooth of the second intermeshing roller 212 can be located at transversely.Pitch P can be in 1mm extremely In the range of 10mm or 1mm to 5mm.

Depth of engagement E is the first intermeshing roller 211 and the second intermeshing roller 212 is engaged with each other degree is measured.Nibble Closing depth E can measure from the top of ridge 215 to the top of tooth 217, and the tooth is transversely adjacent with ridge 215.Depth of engagement E can be In the range of 0.5mm to 10mm or 0.5mm to 5mm or 1 to 4mm.

Each tooth 217 of second intermeshing roller 212 can be limited by circumferential tooth long TL and tooth pitch TD, such as Figure 17 and 18B institutes Show.The long TL of circumferential tooth can be measured at crown from leading edge to trailing edge.The long TL of tooth can in 0.5mm to 10mm or 0.5mm to 4mm or In the range of 1mm to 4mm.

Each tooth is circumferentially separated from each other with tooth pitch TD.Tooth pitch TD can be surveyed from the leading edge of the first tooth to the trailing edge of the second tooth Amount.First tooth and the second tooth of the second intermeshing roller 212 can be in same circumference along longitudinal direction.Tooth pitch TD can be in 0.5mm extremely In the range of 10mm or 0.5mm to 5mm or 1mm to 3mm.

Other orientations of tooth 217, groove 216,218 and ridge 215 are possible, such as along CD directions rather than MD directions.

Top flat 24 and acquisition layer lamilate are nested together so that be formed at most of three-dimensional protuberance in top flat with The most of three-dimensional protuberance being formed in acquisition layer overlaps and fits together.

Top flat 24 and acquisition layer 52 can be extendable.Top flat 24 and/or acquisition layer 52 can be stretched, and not IPN By the top flat or acquisition layer of corresponding rupture.

In general, the ductility for constituting the material of top flat 24 and acquisition layer 52 can be according to institute's phase of three-dimensional protuberance 250 The size of prestige is selecting.If it is desire to relatively large three-dimensional protuberance 250, then will select the material with of a relatively high ductility Material.

For example, disruptive force is being reached according to such as " method of testing " described in " definition " part, top flat 24 or acquisition layer 52 When or before disruptive force is reached can along longitudinally and/or laterally experience be equal to or more than at least 100% or 110% or 120% Or 130% be up to 200% apparent elongation.

In some cases, it can be possible to be desired to have three-dimensional protuberance 250 larger longitudinally or transversely.For this purpose, constituting top The material of piece 24 and acquisition layer 52 can be therefore more extending compared with transversely along longitudinal direction, or vice versa it is as the same.

Top flat/acquisition layer lamilate 245 may include multiple three-dimensional protuberances 250.Multiple three-dimensional protuberances 250 can be towards distribution 54 (referring also to Fig. 2) of layer or towards carrier layer 17 (referring to Figure 11,12) it is prominent.When three-dimensional protuberance 250 extends towards Distribution Layer 54, Contact area between the acquisition layer 52 of top flat/acquisition layer lamilate 245 and following Distribution Layer 54 is improved.Therefore, may be used Transfer of the increase liquid body exudates from top flat/acquisition layer lamilate 245 to Distribution Layer 54.

Figure 19 A- Figure 19 F show the different alternative replacement scheme of three-dimensional protuberance 250.Annular protrusion can be one kind The three-dimensional protuberance 250 of type, see, for example, Figure 19 B.Annular protrusion can pass through the intermeshing work as described in immediately above Skill step is obtained using equipment 200.

Another type of three-dimensional protuberance 250 can be tunnel-type ring.In general, tunnel-type ring may include to form opening And with the base portion of protuberance base widths, and also include the opening and the opening at trailing edge 262 at leading edge 261, referring to example Such as Figure 19 C.

As illustrated in fig. 19 a and fig. 19b, in a ring the three-dimensional protuberance 250 of protuberance form may include interior three-dimensional protuberance 251A and outer three-dimensional protuberance 251B.The interior three-dimensional protuberance 251A of top flat 24 is nested in the outer three-dimensional protuberance of acquisition layer 52 In 251B.

Three-dimensional protuberance 250 can be made by the way that top flat 24 is intermeshed with acquisition layer 52 so that interior the three of top flat 24 The outer three-dimensional protuberance 251B of dimension protuberance 251A and acquisition layer 52 overlaps and fits together.

Interior three-dimensional protuberance 251A may include many ring-type d fiber 254A of top flat 24.Outer three-dimensional protuberance 251B (interior three Dimension protuberance 251A is nested in wherein) may include many fibrae circulares 254B of acquisition layer 52.

Three-dimensional protuberance 250 may include void area 253, and the void area is not including the three-dimensional protuberance of any fiber The part of 251A.Base portion 256 that three-dimensional protuberance 250 can be formed by the opening of neighbouring top flat 24, distal part 257 and positioned at base One or more side walls 255 between portion 256 and distal part 257 are limited.Three-dimensional protuberance 250 can be by the base portion for forming opening 256 protuberance base widths WL₁Limit, the protuberance base widths are the interior three-dimensional protuberance 251A from base portion 256 The measurement of two opposing sidewalls.Each three-dimensional protuberance 250 can be by the width WL of void area 253₂Limit, including the width is The Breadth Maximum measured between two opposing sidewalls of three-dimensional protuberance 251A.The width WL in space gap region 253₂Three can be more than Protuberance base widths WL of the base portion 256 of dimension protuberance 250₁.Protuberance base widths WL to base portion 256₁And distal part 257 width WL₂The measurement of these yardsticks can be carried out on microphoto.When protuberance base widths WL of base portion 256₁Chi It is very little for timing referred to herein, it will be appreciated that if opening is not uniform width along specific direction, protuberance base widths WL₁In the measurement of widest part office.

Most of three-dimensional protuberances 250 can have only one opening at base portion 256.Top flat/acquisition layer lamilate 245 At least the 50% of three-dimensional protuberance 250 or at least 80% only can have opening at base portion 256.Most of three-dimensional protuberances 250 Can be formed by the fiber of top flat 24 and acquisition layer 52.Most of three-dimensional protuberances 250 may include the base portion 256, phase to form opening To distal part 257 and one or more the side walls between the base portion 256 and distal part 257 of three-dimensional protuberance 250 255.Base portion 256, distal part 257 and one or more side walls 255 can be formed by fiber so that most of three-dimensional protuberances are only There is opening at base portion 256.Most of three-dimensional protuberances 250 can have conical by its shape, see, for example, Figure 19 B.

As shown in fig. 19 c, three-dimensional protuberance 251A and outer three-dimensional protuberance 251B can be by many fibrae circulares in each 254A, 254B make, and many fibrae circulares are in alignment with each other to produce tunnel-type ring 250 along vertical and horizontal, the tunnel-type Ring is in addition to the opening at base portion 256 with opening 261,262 also on each end in tunnel.In this case, base Protuberance base widths WL1 in portion 256 are relatively small.According to " protuberance base widths method of testing ", three-dimensional protuberance 250 Protuberance base widths WL of the measurement of base portion 256₁Can be in 0.1mm to 1.2mm or 0.1mm to 1mm or 0.1mm to 0.5mm models In enclosing.

In three-dimensional protuberance region, top flat 24 and/or acquisition layer 52 may include one or more discontinuities.One more The formation of individual discontinuities is attributable to the characteristic of top flat 24 and acquisition layer 52.Top flat 24 is moved relative to the fiber in acquisition layer 52 Property and/or fibrous extensions for can for less extendable, or vice versa it is as the same so that in top flat 24 and/or acquisition layer 52 Initially form hole.

Therefore, as shown in Figure 19 D or 19E, acquisition layer 52 can be in the three-dimensional protuberance 250 of top flat/acquisition layer lamilate 245 Region in be interrupted.The three-dimensional protuberance 251B of the acquisition layer 52 of interruption may include discontinuities 258B.

In general, acquisition layer 52 can have the ductility lower than top flat 24.In such cases, acquisition layer 52 can start Rupture and formed discontinuities, i.e., compared with the fiber of top flat 24 is constituted, the fiber for constituting acquisition layer 52 is less extending and/or not It is too movable.

The three-dimensional protuberance 251A of the top flat 24 of non-interrupted can overlap simultaneously with the three-dimensional protuberance 251B of the acquisition layer for interrupting Fit together, as shown in Figure 19 D.In other words, top flat 24 is not pushed through acquisition layer 52 so that top flat 24 not adopt by IPN Collection layer 52.

Alternatively, the three-dimensional protuberance 251A of the top flat 24 of non-interrupted can be with the three-dimensional protuberance of the acquisition layer 52 for interrupting 251B partly fits together, as shown in fig.19e.

Equally, top flat 24 can be interrupted in the region of the three-dimensional protuberance 250 of top flat/acquisition layer lamilate 245.

In general, top flat 24 can have the ductility lower than acquisition layer 52.In such cases, top flat 24 can start brokenly Split and formed discontinuities, i.e., compared with the fiber of acquisition layer 52 is constituted, the fiber for constituting top flat 24 can be less extending and/or not It is too movable.

In another kind of alternative form, top flat 24 and acquisition layer 52 can be prominent in the three-dimensional of top flat/acquisition layer lamilate 245 It is interrupted in the region in portion 250, and the three-dimensional protuberance of top flat 251A overlaps simultaneously with the three-dimensional protuberance 251B of acquisition layer 52 Fit together.Discontinuities 258A in top flat 24 in the region of the three-dimensional protuberance 250 of top flat/acquisition layer lamilate 245 By not with the region of the three-dimensional protuberance 250 of top flat/acquisition layer lamilate 245 in acquisition layer 52 in discontinuities 258B weight Close, as shown in fig. 19f.

When absorbent article 20 when in use, multiple three-dimensional protuberances 250 can towards wearer body project (referring also to figure 3).When three-dimensional protuberance 250 towards wearer body project when (when absorbent article 20 when in use), top flat/acquisition layer is laminated Contact area between the top flat 24 of body 245 and the skin of wearer is strengthened.Therefore, top flat/acquisition layer lamilate 245 to Wearer provides cushion and the comfort for improving.

Figure 20 A- Figure 20 D show alternative replacement scheme, illustrate that multiple such as annular protrusions of three-dimensional protuberance 250 can be such as What from acquisition layer 52 to top flat/top flat 24 of acquisition layer lamilate 245 is prominent.In those alternative replacement schemes, dash forward in a ring Going out the three-dimensional protuberance 250 of portion's form may include interior three-dimensional protuberance 251A and outer three-dimensional protuberance 251B.Acquisition layer 52 it is interior Three-dimensional protuberance 251A is nested in the outer three-dimensional protuberance 251B of top flat 24.Interior three-dimensional protuberance 251A may include acquisition layer 52 Many fibrae circulares 254B.Outer three-dimensional protuberance 251B (interior three-dimensional protuberance 251A is nested wherein) may include top flat 24 Many fibrae circulares 254A.

The 10cm of top flat/acquisition layer lamilate 245²Area may include 5 to 100 three-dimensional protuberances 250,10 to 50 Three-dimensional protuberance 250 or 20 is to 40 three-dimensional protuberances 250.

For top flat and the precursor material of acquisition layer

Top flat/acquisition layer the lamilate 245 of the present invention can be made up of any suitable non-woven material (" precursor material "). In some cases, top flat/acquisition layer lamilate 245 can be free of cellulosic material.For top flat/acquisition layer lamilate 245 Precursor material can have suitable characteristic to be deformed.The suitable characteristic of precursor material may include：The apparent of fiber stretches Deformation and drawing in length, fiber mobility, the region of the three-dimensional protuberance 250 for forming top flat/acquisition layer lamilate 245 wherein Stretch ability.Therefore, precursor material can experience mechanically deform to guarantee that three-dimensional protuberance 250 will tend not to return to or return to elder generation The front configuration for being laminated in the flat top flat 24 on flat acquisition layer 52.

Being suitable for use as some examples of the non-woven material of the top flat 24 for top flat/acquisition layer lamilate 245 may include But it is not limited to：Viscose non-woven material；Carded nonwoven；Can be easily deformed with relatively specific characteristic is carried Non-woven material.

A kind of non-woven material for being suitable for use as the top flat 24 for top flat/acquisition layer lamilate 245 can be extendable Polypropylene, polyethylene spunbonded non-woven fabrics.It is a kind of to be suitable for being knitted for the non-of top flat 24 of top flat/acquisition layer lamilate 245 Producing material material can be spunbonded non-woven fabrics, including polypropylene and polyethylene.Fiber can include the blend of polypropylene and polyethylene. Alternatively, fiber may include bicomponent fibre, such as sheath-core fibers, and it carries the core of the polyethylene on the skin of fiber and fiber In polypropylene.

The top flat 24 of top flat/acquisition layer lamilate 245 can have 8gsm to 40gsm or 8gsm to 30gsm or 8gsm extremely The base weight of 20gsm.

May include but be not limited to suitable for the non-woven material of the acquisition layer 52 of top flat/acquisition layer lamilate 245：It is spunbond non- It is non-woven that weaving material, the high loft nonwoven material of (" TAB ") combing of through-air bonded, spunlace non-woven material, water are knitted Material and resin bonded carded nonwoven.Spunbond PET is finer and close than carded nonwoven, bigger so as to provide The uniformity and opacity.Because PET is not very extendable, therefore can bonded nonwoven fabric so that work as institute At least some stated when material is strained in the fiber easily can separate to allow the fiber to be drawn out with bonded part Bonded part simultaneously rearranges.Such bonding, such as pressure bonding, can help the mobile and horizontal of increased fiber.It is actual On, fiber tends under tension from bonded part pulling out.

Acquisition layer shows the base weight of 10gsm to 120gsm or 10gsm to 100gsm or 10gsm to 80gsm.

Top flat 24 and/or acquisition layer 52 can have 0.01g/cm³To 0.4g/cm³Or 0.01g/cm³To 0.25g/cm³Or 0.04g/cm³To 0.15g/cm³Density.

Top flat 24 and acquisition layer 52 can be bonded together before mechanically deform or during mechanically deform.If desired, Optionally between top flat 24 and acquisition layer 52 using adhesive, chemical bonding, resin or powder bonding or hot adhesion with The some regions or whole of top flat 24 and acquisition layer 52 are bonded together.Additionally, top flat 24 and acquisition layer 52 can also be in processing Period bonds, for example, by by the combing of top flat 24 to acquisition layer 52 and the combined layer of focus bonding.

Before any mechanically deform, top flat 24 could attach to acquisition layer 52.For example, top flat 24 can the He of top flat 24 wherein The position that acquisition layer 52 is overlapped is attached to acquisition layer 52.Attachment of the top flat 24 to acquisition layer 52 may include the adhesive of uniformly continuous Layer, the discontinuous patterning of adhesive apply or a series of independent adhesive lines, adhesive helix or adhesive spots.Top The base weight of the adhesive in piece/acquisition layer lamilate 245 can be 0.5gsm to 30gsm or 1gsm to 10gsm or 2gsm to 5gsm.

Embodiment

Top flat and acquisition layerIt is attached to one another with hot-melt adhesive, the hot-melt adhesive is with 5gsm by helical wire form Base heavy dressing add.WillAcquisition layerThe front MD borders with top flat are centered on top flat and are positioned to relative to top flat 50mm.Top flat and acquisition layer are attached together to form composite web.

The top flat being attached together and acquisition layer by make they a pair be intermeshed roller 211,212 between pass through and Mechanically deformed simultaneously, see, for example, Figure 17.The top flat contact first of top flat/acquisition layer lamilate is intermeshed roller 211.Top The acquisition layer contact second of piece/acquisition layer lamilate is intermeshed roller 212.Ridge and groove have triangular shaped cross section, As Figure 18 A are illustrated.Pitch P of roller is 0.100 inch (2.5mm).Second intermeshing roller 212 have be arranged conclusion of the business The discrete tooth 217 of wrong pattern.Tooth 217 has the uniform circumferential lengths yardstick TL of about 0.195 inch (4.9mm), circumferentially from one another Ground evenly-spaced 0.162 inch (4.1mm) apart from TD, and the high TH of tooth with about 0.270 inch (10.6mm).Tooth Long side surface has the Sidewall angles with about 5 degree formed by vertical curve, and the leading edge and trailing edge of tooth have upright side walls.First phase Mutually nip roller 211 has the continuous ridge 215 that height is for about 0.270 inch (10.6mm).The top flat of acquisition layer is attached to first It is mutual with the depth of engagement (DOE) of 0.135 inch (3.43mm) between the intermeshing intermeshing roller 212 of roller 211 and second Engagement.

It is 0.11g/cm that the top flat of top flat/acquisition layer lamilate is density³Hydrophily coating one pack system high elongation rate Spunbond polypropylene (HES PP) non-woven material.One pack system HES PP non-woven materials for top flat have the totality of 20gsm Base weight.One pack system HES PP non-woven materials are applied first is covered with by made by fatty acid polyethylene glycol ester finish paint to produce Permanent hydrophilic one pack system HES PP non-woven materials.The top flat of top flat/acquisition layer lamilate have 168mm width and The length of 488mm.

The acquisition layer of top flat/acquisition layer lamilate is viscose non-woven material, and its base weight is 60gsm and density is 0.13g/cm³.Acquisition layer includes the PET/ of 7 daniers with the common PET ratios of 70/30 PET/ that Jing surfactants are processed Common PET (PET) tri-lobal bicomponent fibers.The acquisition layer of top flat/acquisition layer lamilate has 90mm's The length of width and 338mm.

Carrier layer is the common PET/PET tips tri-lobal bicomponent fibers with the common PET ratios of 90/10 PET/.Carrier The base weight of layer is 17.7gsm.Carrier layer has the width of 168mm and the length of 250mm.

For the prototype diaper of embodiment

For above-described embodiment diaper prototype be using from October, 2011 in October, 2012 in Russia commercially available from obtain Prepared by Pampers Premium Care S4 (size 4) diapers for obtaining.Pampers Premium Care S4 (size 4) urinates Cloth include top flat, the acquisition layer below top flat, the Distribution Layer below acquisition layer, the egative film below acquisition layer and absorbent cores it Between absorbent cores.Diaper prototype for above-described embodiment is to use Pampers Premium Care S4 (size 4) diaper systems Standby.

Pampers Premium Care will be placed on for the top flat being attached together and acquisition layer of each embodiment On S4 (size 4) diaper, business top flat and acquisition layer have been removed therefrom, be therebetween held in place Distribution Layer.For Based on each diaper prototype of above-described embodiment, top flat/acquisition layer lamilate is placed on and is dashed forward with the three-dimensional projected towards egative film Go out on the Distribution Layer in portion.

The hot-melt adhesive of helically line form is added in towards top flat/acquisition layer lamilate with the base heavy dressing of 5gsm On the surface of the carrier layer of acquisition layer.Acquisition layer leading edge is positioned to Distribution Layer leading edge at a distance of 10mm.It is viscous with heat fusing Mixture will be attached to the top flat/acquisition layer lamilate of carrier layer and be attached on Distribution Layer and absorbent cores, and the hot-melt adhesive is applied Be added to towards Distribution Layer carrier layer and top flat whole side on.Hot-melt adhesive is the base by helical wire form with 5gsm What heavy dressing added.

The three-dimensional protuberance of top flat/acquisition layer lamilate is projected towards egative film, because the top flat of top flat/acquisition layer lamilate connects Convex roller is touched, as mentioned above.

Each prototype diaper is compacted in bag with " height is stacked in bag " (i.e. the gross thickness of 10 two-fold diapers is as 90mm) In and continued for 1 week.Then the bag is opened, and before any test is carried out, by the diaper taken out from bag 23 At least 24 hours are nursed one's health under the relative humidity (RH) of DEG C +/- 2 DEG C and 50%+/- 10%.

According to corresponding " protuberance method for testing height " and " protuberance base widths method of testing ", measure top flat/ The protuberance height and the protuberance base widths (table 1) of measurement of the measurement of the three-dimensional protuberance of acquisition layer lamilate.

Table 1：The protuberance height and the measured value of protuberance base widths of three-dimensional protuberance

Parallel determination	Protuberance height (mm) of measurement	The protuberance base widths (mm) of measurement
			Mean value	1.40	2.0
Standard deviation	0.0	0.1

Method of testing

Wet rupture method of testing

" wet burst strength " used herein is when the deformation that fibre structure is soaked and undergoes relative to fibre structure plane When, the ability of its energy absorption is measured.

The wet burst strength of fibre structure (in the method for testing be referred to as " sample ") using electronics Burst Tester and The test condition specified is determining.To testing the results averaged for obtaining from 4 times, and for by single wet laid cellulose The record wet burst strength of fibre structure 55 of layer composition.

Device

- equipment：The ball of Burst Tester-Thwing-Albert Vantage Burst Tester or equivalent is resistance to broken Degree tester, wherein the ball is moved down during testing.Operation and setting explanation referring to manufacturer.Bulb diameter is 1.59cm, and a diameter of 8.9cm of chucking opening.

- calibrating weight-referring to the calibration explanation of manufacturer.

- for laboratory test, conditioning chamber temperature and humidity is controlled in following limit：

Temperature：23°±1℃

Relative humidity：50% ± 2%

- paper knife-cutting plate, 600mm sizes

- scissors -100mm or bigger

- disk-width/height/depth is about：240 × 300 × 50mm, or equivalent

Distilled water at a temperature of-conditioning chamber used

It is prepared by sample

Fibre structure 55 can unwind from roller.

Before it will be tested, sample to be tested is nursed one's health 24 hours in conditioning chamber.All tests are to adjust Reason interior is carried out.

Cut the sample so that they are for about the width of the length of 228mm and about 140mm.

Operation

According to explanation of the manufacturer to instrument, the Burst Tester instruments are arranged and calibrated.

The narrow edge of sample is caught, the center of sample is immersed in into the disk filled with distilled water (with top at a distance of about 25mm) In.Sample is set to rest on (± 0.5) second 4 in water.

Sample is maintained at into vertical position, while from the water that it is unnecessary that sample is drained and continuing for 3 (± 0.5) seconds.

Test should be carried out immediately after the draining step.Sample should not have in sample areas to be tested to be worn Hole, tearing part or defect.If having perforation, tearing part or defect, restart test.

Sample is placed between the upper ring and a lower ring of Burst Tester instruments.Sample is placed in the middle in some way and flat It is positioned at smoothly on the lower ring of sample fixing device so that do not exist in the sample lax.

The upper ring of pneumatic type of loweing fixing device is with fixed sample.

Start test.Test terminates in sample failure (rupture) when load declines 20g from peak force.Record maximum, force Value.

Depression bar will automatically fall back and return initial position.

Upper ring is lifted to take out and is abandoned the sample tested.

Repeat the code, until testing all duplicate.

Calculate

The number of the duplicate of the summation of wet burst strength=peak load reading/tested

Wet rupture event is recorded, is accurate to gram.

Protuberance base widths method of testing and protuberance method for testing height

1)General information

" the protuberance base widths of measurement " of the three-dimensional protuberance of the top flat of absorbent article/acquisition layer lamilate and " survey The protuberance height of amount " is using commercially available from GFMesstechnik GmbH (Warthestra β e 21, D14513 Teltow/Berlin, Germany) GFM Primos Optical Profiler apparatus measures.Also can be using with class As measurement and analysis principle alternative suitable non-contact surface topology contourgraph, herein illustrate GFM Primos。

The GFM Primos Optical Profiler instruments include being surveyed based on the compact optics of digital micro mirror projection Quantity sensor, it is made up of following critical piece：

A) the DMD projecting apparatus with 800 × 600 direct numerical control micro mirrors

B) CCD camera with high resolution (640 × 480 pixel)

C) it is suitable to measure the projection optical system of at least 30 × 40mm areas

D) it is suitable to measure the record optical system of at least 30 × 40mm areas

E) table tripod based on little admant plate

F) (a kind of appropriate unit is the LCD of KL 1500, Schott North America, Inc. to cold light source (Southbridge, MA))

G) measurement, control and the assessment computer of the softwares of ODSCAD 6.3 are run

Open cold light source.Setting value on cold light source is provided at least colour temperature of 2800K.

Computer, monitor are opened, and opens IMAQ/analysis software.In Primos Optical Profiler In instrument, " Start Measurement " (starting measurement) icon is selected from the taskbars of ODSCAD 6.3, then click on " Live Image " (realtime graphic) button.

According to the explanation of manufacturer, lateral (X-Y) and vertical (Z) size of the instrument are calibrated using calibration plate.It is such " calibration " is carried out using the rigid solid plate being made up of any matte material, and the plate has the width of the length of 11cm, 8cm The height of degree and 1cm.The plate has the passage of groove or processing, and the passage of the groove or processing has rectangular cross section, 11cm Length, the width of 6.000mm and 2.940mm exact depth.Length direction of the groove parallel to plate.After the calibration, Instrument allows for measuring the width scales and depth dimension of groove, is accurate to ± 0.004mm.

All tests are carried out in the conditioning chamber being maintained under 23 ± 2 DEG C and the relative humidity of 50+/- 10%.To be measured Surface can slightly be coated with very thin white powder spray liniment.Preferably, spray liniment is purchased from Helling GmbH The NORD-TEST Developer U 89 of (Heidgraben, Germany).

2)Protuberance base widths method of testing

Extract top flat/acquisition layer lamilate from absorbent article in the following way：With the plane of tensioning, (what is stretched is flat Face) absorbent article is attached to flat surfaces by configuration, makes the top flat of top flat/acquisition layer lamilate upward.Cut off any leg elasticity Part binds round elastomeric element to allow the flat placement of absorbent article.Worn along the edge of top flat/acquisition layer lamilate using scissors The all layers crossed above absorbent cores (i.e. core wrappage) make two longitudinal cuts.Follow the front waist edge and low back of absorbent article Two cross sections are made through identical layer in edge.

Then top flat/acquisition layer lamilate and any other layer above absorbent cores are removed, top flat/acquisition layer should not be disturbed Lamilate.Can using freezing spray liniment (such as by CRC Industries, Inc. (885 Louis Drive, Warminster, PA 18974, USA) manufacture CRC Freeze Spray) or equivalent auxiliary agent promoting removal of the superiors from absorbent article.So Top flat/acquisition layer lamilate and any other layer are separated afterwards, any other layer includes that any carrier layer is (such as non-woven Carrier layer, tissue layers)；If it is necessary, using freezing spray liniment.If Distribution Layer for example comprising paper pulp layer be attached to top flat/ Acquisition layer lamilate, then carefully remove the cellulose fibre of any remnants with tweezers, should not change acquisition layer.

By the top flat/acquisition layer lamilate (temperature and 50% ± 10% phase at 23 DEG C ± 2 DEG C with three-dimensional protuberance To having nursed one's health at least 24 hours under humidity) i.e. " sample " be laid on rigid planar horizontal surface, make towards body on the side, i.e., The top flat of top flat/acquisition layer lamilate is upwards.Sample is guaranteed with plane configuration placement, be not stretched, make sample uncovered.

Then the nominal outer pressure of 1.86kPa (0.27psi) is applied to sample.Such nominal outer pressure is to there is no harm in Hinder what the topographical profiles applied in the case of measuring.Such external pressure be use it is transparent matt flat What plate applied, the plate takes advantage of 70mm and appropriate thickness (about 5mm) to realize the weight of 83g for 200mm.The plate is lightly put Put on sample so thatThe central point of plate makes whole plate rest on sample away from any folding part at least 40mm On product.Folding part corresponds to the following part of absorbent article (such as top flat/acquisition layer lamilate), wherein for the mesh of encapsulation , the absorbent article is folded.

By the metal weight (each has the quality (approximate thickness of 43mm) of 1200g) of two 50mm × 70mm lightly It is placed onOn plate so that the 70mm edges of each metal weight withThe 70mm justified margins of plate. By the gross weight (approximate thickness is 6mm) of the inner dimensions and 142g of the external measurement with 70mm × 80mm and 42mm × 61mm Metal tank bracket be positioned between two end counterweightsThe center of plate, makes the most long side of tank bracket with plate most Long side aligns.

If sample is less than 70mm × 200mm, or if there is no the sufficiently large region in unfolded portion, or if Region interested is near the edge of sample and can not be analyzed with above-mentioned Plexiglas and counterweight setting value, thenThe X-Y yardsticks of plate and the metal weight for being added are adjusted to achieve the nominal outer of 1.86kPa (0.27psi) Portion's pressure, while keeping the visual field of minimum 30mm × 40mm.At least the 10 of sample should be captured in the visual field of 30mm × 40mm Individual Complete three-dimensional protuberance.

Projection head is positioned to be orthogonal to sample surfaces (being orthogonal to the top flat of top flat/acquisition layer lamilate).

The distance between sample and projection head are adjusted most preferably to focus on.

In Primos Optical Profiler instruments, release the button " Pattern " (pattern) so that Red Cross occurs On screen cross and black cross is occurred on sample.

Focus control is adjusted, until black cross aligns on screen with Red Cross.

Brightness of image is adjusted, then " capture " (capture) digitized image.

In Primos Optical Profiler instruments, by the hole in the side of projector head and/or by Change camera " gain " (gain) sets to change the hole on camera lens on screen.

When the illumination is optimum, the red circle of " I.O. " is labeled as at bottom of screen will become green.

Click on " " Measure " (measurement) button.

The upper of top flat/acquisition layer lamilate sample is measured on the whole visual field of 30mm × 40mm by Plexiglas plates The pattern on surface.It is important that keeping sample transfixion image blurring unclear so as to avoid being captured in the time.Figure As 30 seconds ITs that should be after Plexiglas plates, metal weight and tank bracket are placed on sample.

After image is captured, the X-Y-Z coordinates of each pixel of 40mm × 30mm visual fields area are recorded.X side To for parallel to the direction of the longest edge edge of rectangular field, Y-direction is the direction of the most short edge parallel to rectangular field.Z side To for perpendicular to the direction of X-Y plane.X-Y plane is horizontal, and Z-direction is vertical, that is, be orthogonal to X-Y plane.

The median filter and 81 pixels of 11 pixels is taken advantage of to take advantage of 81 pixels using multinomial filter (n=6), 11 pixels Configured filter is flattening and filter these data.Multinomial filter (n=6) approaches X-Y-Z coordinates tables with 6 order polynomials Face, and difference is returned into approached multinomial.11 pixels take advantage of the median filter of 11 pixels by visual field (40mm × 30mm) being divided into 11 pixels takes advantage of the X-Y of 11 pixels square.The picture of the center of 11 pixel square is taken advantage of positioned at given 11 pixels The Z coordinate of element replaces the average Z values that foursquare all pixels are given by this.81 pixels take advantage of the configured filter of 81 pixels to go Except the fluctuation of the structure, and by all Z peak values for belonging to the lower surface of Plexiglas plates move to top X-Y put down Face.

" datum plane " thus be defined as X-Y plane, it intercepts below the top X-Y plane 100 microns and entirely regards The topographical profiles of field (i.e. 30mm × 40mm).In Primos Optical Profiler instruments, in order to measure " datum plane " (Z=-0.1mm) " material area ", clicks on button " Evaluate " (assessment).Then, " Filter " (filter) work(is used Can come using pre-filtering routine, it include multinomial filter (n=6), 11 take advantage of 11 median filter and configured filter (n =81).Image is saved in computer documents with extension name " .omc ".

The above-mentioned code of identical is performed to top flat/acquisition layer lamilate, is made towards clothes (i.e. top flat/acquisition layer on the side The acquisition layer of lamilate is upwards), the visual field of 40mm × 30mm is located at the identical X-Y location of accurate top flat/acquisition layer lamilate Place.

" dummy section " of datum plane can be defined as the region of " datum plane " above surface profile.With strictly Do not intersect with the border of visual field area (i.e. 40mm × 30mm) positioned at visual field area (i.e. 30mm × 40mm) inside or overlap " dummy section " on border is defined as " isolation dummy section ".For " isolation dummy section ", the protuberance base widths of measurement are determined The diameter of maximum circle of the justice interior to be connected in given " isolation dummy section ".The circle should be only heavy with " isolating dummy section " It is folded.

In Primos Optical Profiler instruments, this can be carried out in the following way：Click on " Draw Circle " (picture circle), and draw possible maximum inscribed circle circle in selected " isolation dummy section ".Click on " Show Sectional picture " (display sectional view), via the end for clicking on the section map contour and can then click on " Horizontal distance " (horizontal range) is measuring circle diameter to obtain protuberance base widths.

For acquired image and digitized image, it is determined that the protuberance base widths of all " isolation dummy sections ".So Afterwards, " the protuberance base widths of measurement " are calculated as the arithmetic mean of instantaneous value of 6 maximum protuberance base widths.

3)Protuberance method for testing height

It is as laminated in extracted top flat/acquisition layer from absorbent article described in " protuberance base widths method of testing " above Body.

Then nursed one's health and scanned under the pressure of 1.86kPa (0.27psi) top flat/collection for including three-dimensional protuberance Layer by layer fit sample, makes towards body on the side, i.e., the top flat of top flat/acquisition layer lamilate upwards, such as above in " protuberance base Described in portion's tilted object method ".

After image is captured, each pixel of the visual field area of the 40mm × 30mm is recorded and flattened/filter X-Y-Z coordinates, as above described in " protuberance base widths method of testing ".Datum plane is also defined as above " prominent Go out portion's base widths method of testing " described in datum plane.

In Primos Optical Profiler instruments, in order to measure " datum plane " " material (Z=-0.1mm) Area ", clicks on button " Evaluate " (assessment).Then pre-filtering routine is applied using " Filter " (filter) function, It include multinomial filter (n=6), 11 take advantage of 11 median filter and configured filter (n=81).With extension name " .omc " Image is saved in computer documents.

Then top flat/acquisition layer lamilate is performed identical described in " protuberance base widths method of testing " above Code, make towards clothes on the side (i.e. the acquisition layer of top flat/acquisition layer lamilate upwards), the visual field of 40mm × 30mm is located at At the accurate identical X-Y location of top flat/acquisition layer lamilate.

" dummy section " of datum plane can be defined as the region of " datum plane " above the surface profile.With tight Lattice ground be located at visual field area (i.e. 30mm × 40mm) inside and do not intersect with the border of visual field area (i.e. 40mm × 30mm) or " dummy section " on the border of overlap is defined as " isolation dummy section ".For " isolation dummy section ", " protuberance height " is defined Be the point with the top flat/acquisition layer lamilate surface profile positioned at X-Y coordinate that should be in " isolation dummy section " minimum Z values with The distance between Z values of top X-Y plane.

Click on " Draw N parallel lines " (drawing N bar parallel lines) and draw the first line segment, the first line segment is parallel In the X-axis (direction of the most long yardstick of the visual field) of visual field, through " isolation dummy section " center and extend to that " isolation is empty Outside the border of region ".Corresponding to the middle part of the line segment, the line segment is parallel to the visual field at the center of " isolation dummy section " Y-axis and engage the maximum y value and minimum Y value of " isolation dummy section ".Then " number " (number) of the line to be drawn is input into, And " distance " (distance) between the line is set as into 0.05mm.Need to draw enough lines to cover entirely " isolation dummy section ".The averaging parameter is made for 0, then click on " Ok " (it is determined that).Then click on " Show sectional Picture " " (display sectional view).The point of the section map contour with minimum Z values is clicked on, and clicks on " Vertical Distance " (vertical distance) with obtain protuberance height.

For acquired image and digitized image, it is determined that " the protuberance height " of all " isolation dummy sections ".Then, By the arithmetic mean of instantaneous value that the protuberance high computational of measurement is 6 maximums " protuberance height ".

Dimension disclosed herein and numerical value are not understood as being strictly limited to the exact numerical values recited.Conversely, unless in addition Indicate, otherwise each such dimension is intended to indicate that the value and around the functionally equivalent scope of the value.For example, it is disclosed as The dimension of " 40mm " is intended to indicate that " about 40mm ".

Unless expressly excluded or limit, by every herein cited document, including any cross reference or Patents or Patent application, is incorporated by reference in its entirety herein.The reference of any document is not relative to any presently disclosed to it Or the accreditation of claimed prior art herein, be not to its individually or with any other with reference to text Offer or the combination of multiple bibliography is proposed, advises or disclose the accreditation of any such invention.If additionally, art in this document Any implication of language or definition mutually conflict with any implication or definition that are herein incorporated by reference in the literature same term, Implication or definition that the term is given in this document are defined.

Although having illustrate and described the specific embodiment of the present invention, for those skilled in the art come Say it is readily apparent that multiple other can be made in the case of without departing from spirit and scope of the present invention and change and modification.Therefore, It is intended to cover all these changes and the modification belonged in the scope of the invention in claims.

Claims

1. a kind of technique for preparing absorbent article, comprises the following steps：

A () provides the liquid permeable top flat web essentially continuously extended along longitudinal direction, the top flat web has first Surface and second surface；The egative film web of the liquid impermeable essentially continuously extended along the longitudinal direction；With with first Surface and the acquisition layer of second surface, wherein the top flat web and the acquisition layer include fiber；

B () aligns top flat web and the acquisition layer with face-to-face relation so that the second surface contact of the top flat web The first surface of the acquisition layer；

(c) while make the top flat web mechanically deform and combine together with the acquisition layer, the thus top flat web Nest together with the acquisition layer so that the most of three-dimensional protuberance being formed in the top flat web with formed described in adopt Most of three-dimensional protuberance in collection layer overlaps and fits together, so as to provide the top flat/acquisition layer with three-dimensional protuberance Lamilate web,

The width of wherein described acquisition layer is less than top flat web width transversely；The top flat/acquisition layer lamilate width Material has the first surface of the second surface for including the acquisition layer；And

E () is by one of the part engagement of the egative film web to the top flat web of the top flat/acquisition layer lamilate web Point so that the first surface of the top flat/acquisition layer lamilate web faces the egative film web.

2. technique according to claim 1, comprises the following steps：

A () provides dry-laying fibre structure or wet laid fibrous structure；

B the dry-laying fibre structure or the wet laid fibrous structure are deposited on the top flat/acquisition layer by () laminated On the first surface of body web or it is deposited in the egative film web；And

C () to a part for the top flat web of the top flat/acquisition layer lamilate web, makes the part engagement of the egative film The dry-laying fibre structure or the wet laid fibrous structure be positioned at the top flat/acquisition layer lamilate web and Between the egative film web.

3. a kind of technique for preparing absorbent article, comprises the following steps：

A () provides the liquid permeable top flat web essentially continuously extended along longitudinal direction, the top flat web has first Surface and second surface；The egative film web of the liquid impermeable essentially continuously extended along the longitudinal direction；With the first table Face and the acquisition layer of second surface；Dry-laying fibre structure and the carrier layer web with first surface and second surface, its Described in top flat web and the acquisition layer include fiber；

B () aligns the top flat web and the acquisition layer with face-to-face relation so that the second surface of the top flat web Contact the first surface of the acquisition layer；

(c) while make the top flat web mechanically deform and combine together with the acquisition layer, the thus top flat web Nest together with the acquisition layer so that the most of three-dimensional protuberance being formed in the top flat web be formed at it is described Most of three-dimensional protuberance in acquisition layer overlaps and fits together, so as to provide the top flat/collection with three-dimensional protuberance Fit web layer by layer,

The width of wherein described acquisition layer is less than top flat web width transversely；The top flat/acquisition layer lamilate width Material has the first surface of the second surface for including the acquisition layer；

D () is deposited on the dry-laying fibre structure on the first surface of the carrier layer web；And

E () is by one of the part engagement of the egative film web to the top flat web of the top flat/acquisition layer lamilate web Point, wherein the second surface of the carrier layer web is towards the top flat/acquisition layer lamilate web or the egative film web.

4. according to technique in any one of the preceding claims wherein, the step of including single absorbent article is cut into, the suction Receiving product includes egative film, top flat and acquisition layer, it is characterised in that the top flat and acquisition layer engagement are forming top flat/adopt Collection is fit layer by layer.

5. according to technique in any one of the preceding claims wherein, including the step of offer acquisition layer, the acquisition layer Arrange with being longitudinally continuous or discontinuously arrange along described.

6., according to technique in any one of the preceding claims wherein, also comprise the steps：Along it is described laterally the top flat/ The part of the egative film is engaged at the transverse edge of the first surface of acquisition layer lamilate web or adjacent to the transverse edge To the part of the top flat web, wherein the transverse edge of the first surface of the top flat/acquisition layer lamilate web does not contain institute State any part of acquisition layer.

7. according to technique in any one of the preceding claims wherein, including the step of offer dry-laying fibre structure, it is described Dry-laying fibre structure includes the mixture of super-absorbent polymer and dry-laying fiber.

8. according to technique in any one of the preceding claims wherein, including the step of offer absorbent cores, wherein the absorbent cores Including absorbing material.

9. technique according to claim 8, wherein the carrier layer web is arranged on the top flat/acquisition layer lamilate width Between material and the dry-laying fibre structure or it is arranged between the dry-laying fibre structure and the absorbent cores.

10. the technique according to any one of claim 8-9, wherein by the gross weight meter of the absorbing material, the suction Receiving material includes at least 80% super-absorbent polymer, is up to substantially 100% super-absorbent polymer.

11. according to technique in any one of the preceding claims wherein, wherein the top flat/acquisition layer lamilate web is including more Individual three-dimensional protuberance, when the absorbent article when in use, the plurality of three-dimensional protuberance is towards the egative film web or towards dress The body of person is projected.

12. comprise the following steps according to technique in any one of the preceding claims wherein, wherein step (c)：

(1) provide first and be intermeshed roller and the second intermeshing roller, in the described first intermeshing roller and described second mutual There is roll gap between nip roller,

It is many that the first intermeshing roller includes that the circumference around the described first intermeshing roller substantially extends incessantly Individual ridge and respective slot, the second intermeshing roller includes multiple rows of circumferentially-spaced tooth opened and respective slot, wherein described many At least a portion of the circumferentially-spaced tooth opened of row in spaced relation around the described second intermeshing roller extends；

(2) top flat is made at the roll gap between the described first intermeshing roller and the second intermeshing roller Web and the acquisition layer are intermeshed so that the ridge of the first intermeshing roller extends to the second intermeshing roller In groove, and the tooth of the second intermeshing roller is extended in the groove of the first intermeshing roller, so as to form bag Include the top flat/acquisition layer lamilate web of the variant part to form three-dimensional protuberance.

13. techniques according to claim 12, wherein the fiber of most of which three-dimensional protuberance be substantially in alignment with each other with Form tunnel-type ring.

14. according to technique in any one of the preceding claims wherein, including forming the top flat/acquisition layer in the following way The step of lamilate web：Interrupt the top flat in the region of the three-dimensional protuberance of the top flat/acquisition layer lamilate web One of web or the acquisition layer so that the top flat web of corresponding another non-interrupted or the three of the acquisition layer Dimension protuberance fits together at least in part with the three-dimensional protuberance of the top flat web or the acquisition layer interrupted.

15. according to technique in any one of the preceding claims wherein, wherein the top flat/acquisition layer lamilate web is to pass through What following manner was formed：Interrupt the top flat width in the region of the three-dimensional protuberance of the top flat/acquisition layer lamilate web Material and the acquisition layer, and the three-dimensional protuberance of the top flat web overlaps and fits with the three-dimensional protuberance of the acquisition layer Together, in the top flat web and in the region of the three-dimensional protuberance of wherein described top flat/acquisition layer lamilate web The discontinuities not with the region of the three-dimensional protuberance of the top flat/acquisition layer lamilate web in the acquisition layer in The discontinuities overlap.