TWI231202B - Absorbent article with liquid trapping layer - Google Patents

Absorbent article with liquid trapping layer Download PDF

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Publication number
TWI231202B
TWI231202B TW92134217A TW92134217A TWI231202B TW I231202 B TWI231202 B TW I231202B TW 92134217 A TW92134217 A TW 92134217A TW 92134217 A TW92134217 A TW 92134217A TW I231202 B TWI231202 B TW I231202B
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TW
Taiwan
Prior art keywords
liquid
layer
sheet
ribs
surface sheet
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Application number
TW92134217A
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Chinese (zh)
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TW200423910A (en
Inventor
Jun Kudo
Masahiro Kashiwagi
Masataka Kinoshita
Kenichiro Kuroda
Takuya Miyama
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Uni Charm Corp
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Publication of TW200423910A publication Critical patent/TW200423910A/en
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Publication of TWI231202B publication Critical patent/TWI231202B/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4756—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F13/53708—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
    • A61F13/53713—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction the layer having a promotional function on liquid propagation in the vertical direction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F13/53743—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers
    • A61F13/53747—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers the layer is facing the topsheet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F2013/53765—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry
    • A61F2013/53778—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry with grooves

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

The object of the present invention is to temporarily hold menstrual blood under a surface sheet of an absorbent article when a large amount of the menstrual blood is applied to the surface sheet to rapidly transfer the menstrual blood to a liquid absorbing layer. The solution of the present invention is that liquid permeating holes 25 extending through the surface sheet 3 and a liquid permeable layer 5 are formed at a central region 20 of a sanitary napkin 1, under which a liquid trapping layer 6 which is formed by forming a water absorbing sheet 8 into a three-dimensional shape, is provided. The liquid trapping layer 6 has lengthwise ribs 6a extending in a lengthwise direction, lateral ribs 6b that are slightly lower and connects the lengthwise ribs 6a, and recessed parts 6c surrounded by the lengthwise ribs 6a and the lateral ribs 6b. The menstrual blood flowing through the liquid permeating holes 25 is held by the recessed parts 6c and rapidly absorbed by the liquid absorbing layer 4 from the bottom parts of the recessed parts 6c.

Description

1231202 (1) 玖、發明說明 【發明所屬之技術領域】 本發明，是有關適合吸收從女性性器所排泄之經血等 之吸收性物品，特別是關於被設置在表面薄片及液體吸收 層之間，吸收液體再傳給上述液體吸收層之液體獲得層之 吸收性物品。 【先前技術】 吸收從女性性器所排泄出之經血之吸收性物品的一般 性構造，爲具備有：位於肌膚側表面之透液性表面薄片、 位於衣著側表面之不透液性背面薄片、以及夾介在上述表 面薄片與背面薄片之間的液體吸收層，通常是使上述背面 薄片夾介感壓接著層而接著於內褲胯下布之內面之狀態來 穿著使用。 此種吸收性物品，當表面薄片一時被施予多量的經血 時，則經血就會在表面薄片上殘留較長時間，在股胯部對 穿著者給予不舒服的濕潤感。在此，有當一時性被施予多 量的液體時，使該液體在表面薄片下擴散之方式等’讓液 體被保持在表面薄片之下而施以應變措施者。 在以下的日本專利文獻1中，乃揭示有在表面薄片與 液體吸收層之間’設置液體傳導（搬運）帶之生理用衛生 棉。 上述液體傳導（搬運）帶，是在不織布形成多數的凹 狀網狀圖案者。該網狀圖案’是將一定厚度的不織布從其 •5- 1231202 (2) 中一面壓縮形成高纖維密度部之壓花圖案、以及從兩面將 上述不織布予以壓縮形成有薄膜要素之壓花圖案，使此等 兩壓花圖案朝向生理用衛生棉的縱向方向（長邊方向）排 列。該液體傳導（搬運）帶，是使已透過表面薄片之經血 的移動，受到上述薄膜要素的規範限制下而使之以迂迴方 式通過上述高纖維密度部，藉此讓經血擴散於縱向方向， 來防止液體欲殘留於表面薄片者。 其次，在日本專利文獻2中，爲針對於用後即棄型紙 尿褲，揭示有在表面薄片與液體吸收層之間，夾介透液性 薄片者。 上述透液性薄片，是讓不織布或紙呈立體變形，來形 成多數的凹部以及區隔該凹部而呈網目狀的凸部。該用後 即棄型紙尿褲，當一度被施予多量的液體時，可藉由將液 體暫時地保持在上述透液性薄片之凹部，來防止液體沿著 紙尿褲的面而流動者。 〔曰本專利文獻1〕 曰本特開平6-3 8998號公報； 〔曰本專利文獻2〕 曰本特開2000-140015號公報。 【發明內容】 〔發明所欲解決之課題〕 上述日本專利文獻1所記載之液體傳導（搬運）帶， 雖然或許能夠讓已透過表面薄片的液體擴散於長邊方向， -6- 1231202 (3) 但由於液體傳導（搬運）帶本身的液體保持能力及液體透 過能力較低，所以當對液體傳導（搬運）帶施予多量的經 血就馬上會飽和而容易滯留。亦即，該液體傳導（搬運） 帶，雖是在熔噴不織布等上形成有壓花圖案者’不過熔噴 不織布是直接以平坦狀態來使用，所以其本身並非是可以 保持住被施予在局部的多量液體者。因此’形成於上述不 織布之壓花圖案，由於該凹部之空間容積極微小’所以在 壓花圖案的凹部內也幾乎不能保持液體。或因如此’不僅 熔噴不織布本身的密度較高而使得液體透過性不良，再更 加上受到上述薄膜要素液體阻隔透過，以致於液體透過能 力較低。 其次，日本專利文獻2所記載之透液性薄片，是在三 角形的凹部蓄積尿液，以抑制尿液會呈平面性的擴散，不 過由於是藉由網目狀的凸部來抑制液體的擴散，所以也導 致內尿在上述凹部處迅速地飽和。因此，若把該透液性薄 片應用到生理用衛生棉時，當黏度比尿液還高之經血集中 於上述凹部時，就容易滯留在該凹部內。又，在日本專利 文獻2中，作爲上述透液性薄片的理想例是以紙來形成者 ，不過若由如此之紙所形成的透液性薄片來應用在生理用 衛生棉時，受到來自於股胯部所給予的壓力馬上就使凹部 潰壞，並且對生理用衛生棉有位移偏向之力作用時，就容 易使透液性薄片破裂。 本發明係用以解決上述以往之課題者，是在提供一種 當多量的液體被施予時，可一時性地將之予以保持之同時 1231202 (4) ’並讓液體平順地移動至吸收層，而能夠減低液體殘留於 表面薄片之吸收性物品來作爲其目的。 〔用以解決課題之手段〕 本發明，是針對於具備有：位於肌膚側表面之透液性 表面薄片、及位於衣著側表面之背面薄片、以及位於上述 表面薄片與上述背面薄片之間的液體吸收層之縱長之吸收 性物品；上述液體吸收層於朝向上述表面薄片之表面設有 液體獲得層，上述液體獲得層，其吸水性薄片，是朝向該 厚度方向保有立體形狀變形之狀態者；該立體形狀，是形 成有朝向上述表面薄片以凸狀且延伸於縱向方向呈相互平 行之縱肋，同時形成有朝向上述表面薄片以凸狀且延伸於 橫向方向之橫肋，該橫肋爲於縱向方向隔開以間隔以連接 於上述縱肋之間之方式所形成，由上述縱肋與橫肋所圍之 多數的凹部爲朝向上述液體吸收層凹窪而形成；至少使上 述縱肋，乃接抵於上述表面薄片、或是接抵於位在表面薄 片之下之透液層，上述凹部之底部爲接抵於上述液體吸收 層，來作爲其特徵。 在本發明之吸收性物品中，透過表面薄片之經血雖一 時地被保持在形成於液體獲得層之凹部內，但由於液體獲 得層是使吸水性薄片呈立體變形者’故與形成於不織布上 之壓花圖案相比較，更可增大凹部之空間容積，而能夠暫 時性地將多量的經血保持在凹部內。並且由於在吸水性薄 片所形成之凹部的底部爲相接於液體吸收層’所以凹部內 -8- 1231202 (5) 的經血在透過吸水性薄片後可以立刻移動至液體吸收層， 可以防止經血長期間停滯蓄積在凹部內。又，縱肋是朝向 作爲物品之長邊方向的縱向延伸，由於該縱肋相接於表面 薄片或是透液層，故被保持在凹部的液體被朝向縱向方向 所引導，而易於抑制其朝向橫向方向擴散。因此經血不會 產生朝向橫向方向之洩漏而容易滲透到液體吸收層。 又，本發明，從上述凹部之底部至上述橫肋之頂部爲 止之高度尺寸，是比從上述凹部之底部至上述縱肋之頂部 爲止之高度尺寸還要低。 該液體獲得層，是在將經血承接至凹部內後，立刻使 經血滲透至液體吸收層者，不過即使倘若於凹部內一時性 地被施予多量的經血時，由於該經血在越過較低的橫肋而 移動到超越並排於縱向方向之凹部，故可容易防止朝向橫 向方向之擴散。 爲此，各別之上述凹部，爲縱向方向的長度尺寸比橫 向方向的寬幅尺寸還要長條縱長爲理想。 又於本發明中，1個凹部的空間容積爲8〜80mm3爲 理想。 當1個凹部的空間容積在上述範圍內時，爲較高黏度 之體液之經血，在透過液體獲得層爲止之間，凹部可以保 持住經血，即使在短時間內被施予多量的經^血，該經血極 少從凹部溢出，可以防止經血回滲到表面薄片，並且可以 防止經血朝向橫向方向擴散。 又，於本發明，上述液體獲得層，是藉由讓上述吸水 -9- 1231202 (6) 性薄片呈立體變形時之拉伸應力集中，使纖維間的間隔被 拉開（拉寬）而產生低密度之部分。 當在上述液體獲得層形成有纖維密度較低之部分時， 則可以使一時性地被保持於凹部內的經血立刻移動至液體 吸收層。 又本發明，上述液體獲得層，於縱向方向連續形成有 寬幅比上述縱肋還寬之平坦部。 上述平坦部，是立體形狀成型時沒有受到拉張力或是 壓縮力之區域，所以強度不會降低，又其纖維密度爲原材 料者，比縱肋等爲密度較低之區域。因此，當組合吸收性 物品時，可以保持（吸持）該平坦部以供給組合加工液體 獲得層之製程所需。又由於該平坦部比起縱肋等可維持於 比較低密度，故當該平坦部朝向縱向方向延伸時，則該平 坦部可以具有作爲防止經血朝橫向方向擴散之擴散防止帶 之功能。該平坦部，雖然是可以設置在液體獲得層之任何 位置皆可，但爲了有效地發揮作爲上述擴散防止帶之功能 ，上述平坦部以形成在液體獲得層的兩側部爲理想。又平 坦部以設於液體獲得層之前後端部亦可。 又於本發明中，上述液體獲得層’係可使複數片的上 述吸水性薄片重疊，使該複數片的上述吸水性薄片一起製 成立體形狀來構成者。 當以複數片吸水性薄片來構成液體獲得層時’基重較 高可提高液體的吸收保持能力’更進一步能夠提高縱肋或 是橫肋的強度。再者，凹部之壁部即使爲低密度或是會產 -10- 1231202 (7) 生龜裂’該壁部一旦由複數片之薄片所形成時，則形成低 密度之部分或是形成龜裂之部分就不會集中於一處，而可 以防止上述壁部強度極端地降低。因此，即使吸收性物品 在呈濕潤狀態時，也能夠經常維持於凹部形狀。 又，於本發明，將乾燥狀態之上述液體獲得層朝向縱 向方向拉伸（拉張）時之拉伸破裂強度爲每25 mm寬幅 爲2· 5N以上爲理想。 爲了具有上述強度且又可發揮吸水功能，吸水性薄片 係以纖維素系纖維與合成樹脂纖維所形成者爲理想。又， 當具有上述強度時，即使承受來自身體的壓力也能夠容易 地保持立體形狀，而可以長期間維持住凹部的空間容積。 【實施方式】 本發明之吸收性物品，是使用在作爲用以吸收從女性 膣口所排泄出之經血爲主要目的之生理用衛生棉。又，吸 收性物品其2個表面之中，於文中是以朝向股胯部之表面 作爲肌膚側表面，而相反面側之表面，於該外側無論是否 有衣著穿著皆稱以衣著側表面來表現。 在本專利說明書所謂縱向方向中心線，其意思是指將 吸收性物品於橫向方向分成二等分而朝縱向方向延伸之線 。另一方面，在以下的第1實施形態中，是將吸收性物品 於縱向方向一分爲二而朝橫向方向延伸之線稱作爲橫向方 向基準線，不過該橫向方向基準線之意未必是橫跨於將吸 收性物品朝縱向方向分成二等分之位置，例如於第2實施 •11 - 1231202 (8) 形態般’對於適用於女性就寢時穿著之朝縱向方向之長型 吸收性物品而言，側翼部位於前方部分者，在將肌膚側表 面裝著於身體時，是指在擋接於膣口之部分，以通過該部 份縱向方向之中心線作爲橫向方向基準線。 第1圖，是以本發明之吸收性物品爲第1實施形態， 將生理用衛生棉1以肌膚側表面朝上的平面圖；第2圖， 是第1圖所示之生理用衛生棉被裝著於內褲胯下布之狀態 ’以橫向方向之II-II基準線切斷後，從箭頭方向所觀察 的斷面圖；第3圖，上述生理用衛生棉之中央區域予以放 大的斷面圖；第4圖，是液體獲得層的立體圖；第5圖， 是第4圖之V-V線的斷面圖；第6圖，將第4圖以VI-VI 線剖斷後的斷面圖。 生理用衛生棉1，是從縱向方向中心線〇y-〇y於橫向 方向隔開以等間距，具有朝向縱向方向延伸之右側緣部 la及左側緣部lb，並具有從橫向方向基準線Ox-Ox於前 後隔開等間隔之呈凸曲線形狀的前緣部i c以及後緣部i d ο 上述右側緣部1 a及左側緣部1 b，在包含橫向方向基 準線Ox-Ox之縱向方向一定長度的範圍中朝左右兩側突 出，以該突出部分形成側翼部1 A、1 A。 如第2圖之斷面圖所示，該生理用衛生棉1，係具備 有顯現在衣著側表面的不透液性背面薄片2，以及顯現在 肌膚側表面的透液性表面薄片3。在上述背面薄片2與上 述表面薄片3之間夾介有液體吸收層4。在表面薄片3下 -12- 1231202 Ο) 方設置有透液層5，在透液層5與上述液體吸收層4之間 設置有液體獲得層6。 生理用衛生棉1，至少於其表面薄片3及上述液體吸 收層4被施以局部性之加壓及加熱，而形成有顯現於肌膚 側表面的壓縮溝10。該壓縮溝10，是使用加熱輥筒藉由 壓花加工所形成。其是在上述液體吸收層4與表面薄片3 呈重疊之狀態下，使平整面之加熱輥筒擋接於液體吸收層 4之表面，再以具有壓花圖案之凸部的加熱輥筒擋接於表 面薄片3的表面，加壓並加熱而形成壓縮溝10。 在上述壓縮溝1〇中，是交互地形成有：使上述液體 吸收層4與表面薄片3大致被壓著成薄膜狀之高密度壓縮 部，以及非呈薄膜狀而密度比壓縮溝10以外之區域還要 高之中密度壓縮部。具備有該高密度壓縮部以及中密度壓 縮部之壓縮溝，是從生理用衛生棉1之肌膚側表面朝向背 面薄片2側作爲窪凹溝而形成者。 如第1圖所示，上述壓縮溝10是以符號11至16來 顯示並區分各壓縮溝。 在從縱向方向中心線〇y-〇y朝向右側及左側開離有 等距離之位置上，形成有朝向縱向方向延伸的內側壓縮溝 1 1、11。上述內側壓縮溝1 1、1 1，是在橫向方向基準線 Ox-Ox的部分使該相對向間隔變窄之方式，呈使凸側爲朝 向縱向方向中心線〇y-〇y之圓弧曲線。上述內側壓縮溝 1 1及內側壓縮溝η，是藉由前方連結壓縮溝1 2及後方連 結壓縮溝1 3相互所連結。前方連結壓縮溝1 2，是呈使凸 •13- 1231202 (10) 側爲朝向前緣部1 C之曲線形狀，後方連結壓縮溝1 3是呈 使凸側爲朝向後緣部1 d之曲線形狀。 從上述內側壓縮溝1 1、1 1及上述前方連結壓縮溝12 之交點，朝向前緣部lc形成有一對前方延長壓縮溝14、 1 4，該前方延長壓縮溝1 4、1 4，是相對於縱向方向中心 線〇y-〇y於左右爲等距離配置。又，從內側壓縮溝1 1、 11及上述後方連結壓縮溝1 3之交點，朝向後緣部1 d形 成有一對後方延長壓縮溝15、15。該後方延長壓縮溝15 、：15，是相對於縱向方向中心線0y-0y於左右爲等距離 配置。 上述內側壓縮溝π、1 1，前方連結壓縮溝1 2，後方 連結壓縮溝13，前方延長壓縮溝14、14，以及後方延長 壓縮溝15、15，乃全部連續而形成。並且，藉由上述內 側壓縮溝11、1 1，前方連結壓縮溝1 2 ’以及後方連結壓 縮溝1 3，使生理用衛生棉1之肌膚側表面的一定範圍受 到包圍，使該受到包圍的範圍成爲中央區域20。該中央 區域20，相對於縱向方向中心線〇y-〇y是呈左右對稱形 狀，且相對於橫向方向基準線〇x-〇x亦呈前後對稱形狀 〇 在內側壓縮溝11、11的左右兩外側’形成有外側壓 縮溝1 6、1 6。該外側壓縮溝1 6、1 6，是以上述橫向方向 基準線Ox-Ox爲中心，形成於縱向方向之前後一定長度 的範圍中。上述外側壓縮溝1 6、1 6，是與上述內側壓縮 溝1 1、1 1呈相似之曲線形狀，與內側壓縮溝1 1、1 1保持 -14- 1231202 (11) 在一定間隔而形成。 如第1圖所示，上述透液層5，爲於縱向方向之細長 帶狀，該兩側緣部5 a、5 a與左右之內側壓縮溝1 1、1 1不 會重複地位於上述內側壓縮溝1 1、1 1之內側。又透液層 5，超過前方連結壓縮溝12而延伸至前緣部lc爲止，且 超過後方連結壓縮溝13而延伸至後緣部Id爲止。在上述 前方連結壓縮溝1 2及後方連結壓縮溝1 3之一部分，表面 薄片3是與上述液體吸收層5及液體吸收層4 一起被壓縮 〇 上述液體獲得層6爲長方形，兩側緣部6h、6h，是 超過上述內側壓縮溝1 1、1 1而位於左右外側。又前緣部 6i及後緣部6j，是位在比前方連結壓縮溝1 2及後方連結 壓縮溝13更接近橫向方向基準線Ox-Ox之位置。在上述 內側壓縮溝1 1、11的一部分，上述表面薄片3是與液體 獲得層6及液體吸收層4 一起被壓縮。 於上述中央區域2 0，規則性地排列設置有多數的透 液孔2 5。如第3圖所示，上述透液孔2 5，爲貫通過表面 薄片3以到達透液層5之方式而形成，較佳方式是使上述 透液孔2 5，從表面薄片3貫通透液層2 5而形成。又，從 透液層5的側緣部5 a、5 a以外之部分，則僅上述表面薄 片3形成有透液孔25。 上述透液孔25之開孔面積爲〇.2〜8 mm 2，在本實 施形態中之圓形透液孔2 5的直徑爲〇. 5〜3.2 m m。到相 鄰接之透液孔2 5的中心間距爲1 .5〜8 m m。 -15- 1231202 (12) 上述表面薄片3及透液層5係包含有能夠熱熔著之熱 可塑性纖維。表面薄片3與透液層5在呈重疊後之狀態下 ，藉由從表面薄片3朝向透液層5插入、拔取針或是銷來 形成透液孔25。在透液孔5的內面及該周圍，使被含於 表面薄片3之熱可塑性纖維，與被含於透液層5之熱可塑 性纖維相互熔著。藉此，得以維持透液孔25之開孔形狀 之同時，藉由透液層5可補強透液孔25之開孔周圍。又 由於藉由上述熱熔著使表面薄片3及透液層5接合，故表 面薄片3與透液層5沒有必要以接著劑來接著，所以不會 由於接著劑而導致妨礙液體的透過。 上述表面薄片3，是由氣流 （air-through)不織布 所形成。該氣流不織布，是使用其芯.部爲含有氧化鈦之聚 對苯二甲酸乙二醇酯（PET )，而其鞘部爲聚乙烯（PE) 之芯鞘型複合合成纖維，該纖維藉由熱風而接合者，其基 重爲15〜6 0g/m 2左右。又構成表面薄片3之上述複合合 成纖維，爲具有親水性油劑塗層者，與具有撥水性油劑塗 層者之混合者，具有撥水性油劑塗層之纖維之混合率以在 10〜30質量％。藉由使表面薄片3以成爲上述混合率之方 式均等地含有撥水性油劑塗層之纖維，可抑制表面薄片3 所承接之經血在表面薄片3內過於擴散，使經血主要透過 透液孔2 5而被施予至吸液層4。 不過，上述表面薄片3亦可於透液孔2 5以外之區域 使經血透過透液層5。爲了發揮如此之透液功能，表面薄 片3之密度以在 0.12g/c m 3以下爲理想，其下限爲 -16- 1231202 (13) 0.025g/c m 3 左右。 透液層5’是用由芯部爲聚丙烯（PP)而鞘部爲聚乙 烯（PE)之芯鞘型複合合成纖維所形成之氣流不織布所形 成。透液層5之氣流不織布，是僅由具有親水性油劑塗層 之纖維所形成，並不含有撥水性油劑塗層之纖維。在第3 圖所示之實施形態中，透液層5是將上述氣流不織布以複 數片重疊而構成，例如1片的氣流不織布以折疊成2片重 疊、3片重疊、或4片重疊之方式來使用。1片不織布之 基重爲15〜50g/m 2左右，透液層5整體之基重只要在 30〜150g/m 2左右即可，更佳者爲50〜100g/m 2。 藉由將透液層5之基重作得比表面薄片3之基重還大 ，可將基重及密度較低之表面薄片3予以補強，並防止在 表面薄片3產生過大的縐褶或從透液孔25之部分產生破 損等。 透液層5的纖維密度是比表面薄片3的纖維密度還低 ，透液層5的纖維密度爲0.0 16〜0.08 g/c m 3。又，例如 ，表面薄片3是由纖度爲2.2 dtex的纖維所構成，透液層 5是由纖度爲4.4 dt ex的纖維所構成。透液層5的密度是 比表面薄片3還要低，並由於透液層5是由纖度較大的纖 維所形成，故透液層5可以發揮緩衝性。因此以縱向方向 中心線〇y-〇y爲中心之一定寬幅的範圍中’藉由設置上 述透液層5，該一定範圍可以給予身體軟質的接觸感觸。 上述液體獲得層6，是藉由具有液體吸收功能及透過 功能以及形狀保持性之吸水性薄片8 ’如第4圖所示地賦 -17- 1231202 (14) 予立體成形者。在本實施形態中之吸水性薄片8，是含有 纖維素系纖維及合成樹脂纖維。本實施形態中，作爲纖維 素系纖維以使用化學紙漿，作爲合成樹脂纖維以使用芯部 爲聚對苯二甲酸乙酯（PET )而鞘部爲聚乙烯（PE )之芯 鞘型複合合成纖維之氣流成型（air laid )不織布（氣流 成型紙漿）。該氣流成型不織布，是使上述纖維在空間中 積層而形成織網，其中乙烯醋酸共聚合體之乳液等黏劑爲 不織布整體之5〜20質量％之範圍而呈薄片狀者。 液體獲得層6，由於是用以吸收經血使之朝向液體吸 收層4透過，故於上述吸水性薄片8中，相對於纖維之合 計以含有上述化學紙漿20質量％以上爲理想。又爲了能 夠在含有經血之濕潤狀態下亦能維持如第4圖所示之立體 形狀，故亦含有上述合成樹脂纖維20質量％以上者爲理 想。亦即，形成吸水性薄片之化學紙漿及合成樹脂纖維之 質量比之理想範圍爲80 : 20〜20 : 80。 爲了使液體獲得層6維持如第4圖所示之立體狀態’ 故吸水性薄片8之基重以20〜200g/m 2爲理想。爲了維 持該基重，故吸水性薄片8，氣流成型不織布可以使用1 片、或亦可使用2片折疊或是3片重疊。 被製成第4圖之立體形狀後之液體獲得層6在乾燥時 的拉伸破斷強度，是於X方向及Y方向雙方皆以母見度 長25 m m爲2.5N以上者爲理想。該拉伸破裂強度，是將 寬度25 mm在X方向及Y方向之被製成細長之液體獲得 層6之測試片，分別以1 00 m m之夾頭間隔距離所夾持’ -18- 1231202 (15) 將上述夾頭以100 mm /m in拉張時所測定之最大荷重。 又，上述液體獲得層6在於其後所說明之在吸收了人工經 血呈濕潤狀態下之拉伸破裂強度，爲上述乾燥時之強度的 2 0%以上爲理想，爲30%以上則更爲理想。 只要具備有上述之基重及拉伸強度，液體獲得層6在 乾燥時以及吸收經血之濕潤時，便易於維持立體形狀，就 能夠利用液體獲得層6之凹部發揮保持重覆承接經血之功 能。只要具備有上述基重及拉伸破裂強度，液體獲得層6 以上述氣流成型不織布以外者亦可。 例如，僅由紙漿以黏劑接合之氣流成型不織布亦可。 或是，將纖維素系纖維及合成樹脂纖維以水噴射交織成水 針（spunlace )不織布亦可。或是，將纖維素系纖維之紙 漿與嫘縈之至少一方爲主體所成的水針不織布，以及合成 樹脂纖維爲主體之氣流 （air-through)不織布以水噴射 處理或是熱密封製成一體化者亦可。或是以上述水針不織 布及點黏（pointbond )不織布、或是將上述水針不織布 及紡黏（spunbond )不織布同樣地予以一體化者，或是使 纖維素系纖維爲主體之水針不織布與具有多數開孔之薄膜 相接合者亦可。 又，以多種纖維形成液體獲得層6時，該纖維素系纖 維之含有率，若是使用朝向著透液層5側比朝向著液體吸 收層4側還高者時，就容易將經血從透液層5朝向液體獲 得層6吸引入。相反地若是在朝向著液體吸收層4側之纖 維素系纖維含有率較高時，則容易讓經血朝向液體吸收層 -19 - 1231202 (16) 4移動。 如第4圖所示，液體獲得層6，係形成有使其凸側朝 向表面薄片3變形之縱肋6a，與使其凸側朝向相同表面 薄片3變形之橫肋6b。縱肋6a是於縱向方向（Y方向） 以直線性延伸而以等間隔相互平行位於橫向方向來形成。 橫肋6b，是以連結相互鄰接之縱肋6a、6a之方式而形成 。橫肋6b雖是在縱向方向隔以一定間隔開平行而形成者 ，不過於橫向方向相鄰之橫肋6b並非位於同一線上，於 縱向方向上並列之橫肋6b與在該相鄰之縱向方向並列之 橫肋6b是以被配置以相互錯開之方式的位置。 在受到上述縱肋6a及橫肋6b所包圍之部分，形成有 朝向液體吸收層4之窪凹部6c，該凹部6c是Y方向上的 長度尺寸要比X方向上的寬幅尺寸還大的縱長形狀。液 體獲得層6其多數的上述凹部6c是呈規則性排列者。 液體獲得層6，從兩側緣部6h、6h朝向內側在一定 寬幅尺寸Wa之範圍成爲平坦部6f、6f，該平坦部6f、6f 並沒有形成上述凹部6c。該平坦部6f、6f，是比縱肋6a 之於後所說明之寬幅尺寸還要寬，平坦部6f之寬幅尺寸 Wa爲縱肋6a之寬幅尺寸的1.2〜10倍以上，更佳者爲2 〜5倍。在本實施形態中，在液體獲得層6的兩側部形成 有平坦部6f、6f，由平坦部6f及平坦部6f所夾之全區域 規則地排列上述凹部6c。不過，從液體獲得層6之前緣 部6i及後緣部6j內側朝向之特定範圍平坦部亦可。此時 ，從前緣部6i及後緣部6j之平坦部的寬幅尺寸，爲橫肋 -20- 1231202 (17) 6b之寬幅尺寸的1.2〜10倍以上，更佳者爲2〜5倍。 如第6圖所示’從凹部6c下面到縱肋6a的頂部爲止 的高度尺寸hi，是比從上述下面到橫肋6b之頂部爲止之 高度尺寸h2還要高。而且，如第3圖所示，上述縱肋6a 的頂部，是藉由熱熔接著劑而接著於上述透液層5的下面 ’上述凹部6c的下面，是藉由熱熔接著劑而接著於液體 吸收層4的上面。亦即，各別之縱肋6a的頂部是位於同 一平面上，且各別之縱肋6a的頂部抵接於透液層5，各 別之凹部6c的下面是位於同一平面上，且各別之凹部6c 的下面是抵接於液體吸收層4。又，液體獲得層6之上述 平坦部6f、6f亦藉由熱熔接著劑而接著於透液層5的下 面。 上述熱熔接著劑，是以不規則地塗佈於液體獲得層6 的下面（朝向衣著側之表面）以及液體吸收層4之表面（ 朝向肌膚側之表面）的一部分，使經血從透液層5朝液體 獲得層6之滲透，以及從液體獲得層6朝向液體吸收層4 之經血滲透，不會受到上述熱熔接著劑所妨礙。 如上述般，橫肋6b的頂部，由於比縱肋6a的頂部還 低，所以多數存在之橫肋6b之其中至少一部分’其頂部 並無接著於透液層5，在該橫肋6b之頂部與透液層5之 間形成有微小縫隙。 如後所說明，上述液體獲得層6，是以成型輥筒壓夾 平坦的吸水性薄片8賦予成型爲立體形狀。在賦予成型爲 該立體形狀時，由於拉伸應力集中在凹部6c的壁部6e ’ -21 - 1231202 (18) 所以在該壁部6e纖維彼此間作用有分離力，因而於該壁 部6e，存在有纖維密度比縱肋6a的頂部及橫肋6b的頂 部及凹部6c的底部6d還要低之部分。又在上述壁部6e ，存在有由於上述應力集中而產生龜裂之部分。不過縱肋 6a的頂部及凹部6c的底部6d中，形成吸水性薄片8之 纖維受到加壓，因而該部分的纖維密度會提高。又，對於 平坦部6f由於在成型時並無壓力作用，所以平坦部6f， 其密度會比縱肋6a的頂部及凹部6c的底部6d還要低。 又，液體獲得層6之平均密度，是比表面薄片3及透 液層5還高，而其下之液體吸收層4之纖維密度則比液體 獲得層6的平均密度還高。由於液體獲得層6之縱肋6a 接抵於透液層5，而凹部6c之底部6d接抵於液體吸收層 4，所以藉由上述密度梯度，經血便容易從表面薄片3經 由透液層5而朝向液體獲得層6移動，更進一步地容易從 液體獲得層6朝向液體吸收層4移動。又，如上述般，在 液體獲得層6之凹部6c的壁部6e存在有纖維分離而使得 密度較低之部分，更進一步地還存在有龜裂者，所以暫時 被蓄留於上述凹部6c之經血，可以快速地移動到液體吸 收層4。 爲了使經血，快速地從液體引導層5移動到液體獲得 層6，又欲快速地使其從液體獲得層6施予液體吸收層4 ，故液體獲得層6的平均密度，是以0.05〜0.25 g/c m 3 爲理想，位於該液體獲得層6之下的液體吸收層6之纖維 密度，是以0.07〜0.25 g/c m 3爲理想。 -22- 1231202 (19) 上述縱肋6a之（1/2) .hi之高度位置的寬幅尺寸， 以及在橫肋6b之（1/2 )· h2之高度位置的寬幅尺寸2〜 10mm，較理想爲2〜6mm。又液體獲得層6之高度hi ，爲1.3〜5 mm。由於爲了使透過表面薄片3的經血可 以充分地蓄積在凹部6c，以1個上述凹部6c的（1/2) h2 的高度位置處之開口面積以5〜20 mm爲理想，又凹部 6c的空間容積{上述面積X (高度hi -吸水性薄片之厚 度）}，以8〜8 0 m m爲理想。 又1個凹部6c在（1/2) h2之高度位置處之開口尺寸 的縱橫比，亦即（Y方向的縱向尺寸）/ (X方向的寬幅 尺寸），是以1.1〜10之範圍爲理想，較佳爲1.5〜7，更 佳者爲2〜5。若當縱橫比未滿上述範圍時，則在液體獲 得層6所獲得之經血朝向縱向方向的導引功能會降低，造 成朝向橫向方向擴散的可能性恐怕增大，又若縱橫比超過 上述範圍時，則橫肋6b彼此間的間隔過寬，當承受來自 大腿部等朝向橫向方向之壓縮力時，會降低欲朝向橫向方 向展開之彈性復原力。 該液體獲得層6，其橫肋6b由於是朝向縱向方向隔 以間隔而形成，相對於生理用衛生棉1，當前緣部1 c與 後緣部1 d受到在相接近之方向且使肌膚側表面成凹下之 彎曲作用力時，液體獲得層6可以追隨配合此一變形而易 於彎曲。尤其是當凹部6c之縱橫比在上述範圍內時，液 體獲得層6可容易朝向上述方向彎曲。藉由液體獲得層6 可追隨配合生理用衛生棉1之彎曲變形，液體獲得層6與 -23·1231202 (1) Description of the invention [Technical field to which the invention belongs] The present invention relates to an absorbent article suitable for absorbing menstrual blood and the like excreted from a female sexual organ, and more particularly, it is disposed between a surface sheet and a liquid-absorbing layer, The absorbent liquid is then passed to the liquid-absorbent article of the liquid-absorptive layer of the liquid-absorbent layer. [Prior Art] The general structure of an absorbent article that absorbs menstrual blood excreted from a female sexual organ is provided with a liquid-permeable surface sheet on the skin-side surface, a liquid-impermeable back sheet on the clothing-side surface, and The liquid-absorptive layer sandwiched between the surface sheet and the back sheet is usually worn in a state where the back sheet is sandwiched between the pressure-sensitive adhesive layer and the inner surface of the underpants. In such an absorbent article, when a large amount of menstrual blood is applied to the surface sheet at one time, the menstrual blood remains on the surface sheet for a long time, and an uncomfortable moist feeling is given to the wearer in the femoral region. Here, when a large amount of liquid is temporarily applied, there is a method such that the liquid is diffused under the surface sheet, etc., so that the liquid is held under the surface sheet and a strain measure is applied. Japanese Patent Document 1 below discloses a sanitary napkin in which a liquid conducting (conveying) belt is provided between the surface sheet and the liquid absorbing layer. The above-mentioned liquid-conducting (conveying) belt is formed by forming a large number of concave mesh patterns on a non-woven fabric. The mesh pattern is an embossed pattern in which a certain thickness of non-woven fabric is compressed from one side of the • 5- 1231202 (2) to form a high fiber density portion, and the non-woven fabric is compressed from both sides to form a thin film element. These two embossed patterns are aligned in the longitudinal direction (long side direction) of the sanitary napkin. The liquid conducting (conveying) belt is to allow the movement of menstrual blood that has passed through the surface sheet, subject to the specifications of the above-mentioned thin film elements, to cause it to pass through the high fiber density portion in a roundabout manner, thereby allowing the menstrual blood to diffuse in the longitudinal direction. Prevent liquids from remaining on the surface sheet. Next, Japanese Patent Document 2 discloses that a liquid-permeable sheet is interposed between a surface sheet and a liquid-absorbing layer for a disposable diaper. The liquid-pervious sheet is formed by three-dimensional deformation of a non-woven fabric or paper to form a large number of concave portions and a mesh-like convex portion that partitions the concave portions. This disposable diaper can prevent liquid from flowing along the surface of the diaper by temporarily holding the liquid in the recessed portion of the liquid-permeable sheet when a large amount of liquid is applied to the disposable diaper. [Japanese Patent Document 1] Japanese Patent Publication No. 6-3 8998; [Japanese Patent Document 2] Japanese Patent Publication No. 2000-140015. [Summary of the Invention] [Problems to be Solved by the Invention] Although the liquid conducting (conveying) belt described in the above-mentioned Japanese Patent Document 1 may be capable of diffusing the liquid that has passed through the surface sheet in the long side direction, -6- 1231202 (3) However, since the liquid-conducting (conveying) belt itself has a low liquid-retaining ability and liquid-permeability, when a large amount of menstrual blood is applied to the liquid-conducting (conveying) belt, it will immediately saturate and easily stay. In other words, although the liquid conducting (conveying) belt has an embossed pattern formed on the meltblown nonwoven fabric, the meltblown nonwoven fabric is used directly in a flat state, so it cannot be held by itself. Local large amount of liquid. Therefore, 'the embossed pattern formed on the non-woven fabric has a very small space capacity in the recessed portion', so that the liquid is hardly held in the recessed portion of the embossed pattern. Or because of this', not only the density of the meltblown nonwoven fabric itself is relatively high, which results in poor liquid permeability, but also because it is blocked and permeated by the above-mentioned film element liquid, so that the liquid permeability is low. Next, the liquid-permeable sheet described in Japanese Patent Document 2 accumulates urine in a triangular concave portion to suppress the planar diffusion of urine, but because the mesh-like convex portion suppresses the diffusion of liquid, Therefore, the urine is rapidly saturated at the above-mentioned recess. Therefore, when the liquid-permeable sheet is applied to a sanitary napkin, when menstrual blood having a viscosity higher than that of urine is concentrated in the recessed portion, it is liable to stay in the recessed portion. Further, in Japanese Patent Document 2, as an ideal example of the liquid-pervious sheet, paper is used. However, when the liquid-pervious sheet formed of such a paper is applied to a sanitary napkin, it is subjected to When the pressure given by the femoral palate immediately collapses the recessed portion and exerts a biasing force on the sanitary napkin, the liquid-permeable sheet is easily broken. The present invention aims to solve the above-mentioned conventional problems, and is to provide a method that can hold a large amount of liquid at the same time while maintaining it 1231202 (4) 'and allow the liquid to smoothly move to the absorption layer, The purpose is to reduce the amount of liquid remaining on the surface sheet of the absorbent article. [Means for Solving the Problems] The present invention is directed to a liquid-permeable surface sheet on the skin-side surface, a back sheet on the garment-side surface, and a liquid between the surface sheet and the back sheet. The longitudinally absorptive article of the absorptive layer; the liquid-absorptive layer is provided with a liquid obtaining layer on the surface facing the surface sheet, and the liquid-absorptive layer has a three-dimensional shape deformed toward the thickness direction; The three-dimensional shape is formed with longitudinal ribs that are convex toward the surface sheet and extend parallel to each other in the longitudinal direction, and are formed with lateral ribs that are convex toward the surface sheet and extend in the lateral direction. The longitudinal direction is formed at intervals and connected between the longitudinal ribs, and most of the recesses surrounded by the longitudinal ribs and the transverse ribs are formed as depressions toward the liquid-absorbing layer; at least the longitudinal ribs are The bottom of the recess is abutted on the surface sheet or the liquid permeable layer located under the surface sheet. The liquid absorbing layer is described as a feature. In the absorbent article of the present invention, although the menstrual blood passing through the surface sheet is temporarily held in the recess formed in the liquid obtaining layer, the liquid obtaining layer is formed on the non-woven fabric because the water absorbing sheet is three-dimensionally deformed. Compared with the embossing pattern, the space volume of the concave portion can be increased, and a large amount of menstrual blood can be temporarily held in the concave portion. And because the bottom of the recess formed by the water-absorbent sheet is in contact with the liquid-absorbing layer, the menstrual blood in the recess-8-1231202 (5) can move to the liquid-absorbing layer immediately after passing through the water-absorbent sheet, which can prevent menstrual blood from growing. During this period stagnation accumulates in the recess. The longitudinal ribs extend longitudinally in the direction of the long side of the article. Since the longitudinal ribs are in contact with the surface sheet or the liquid-permeable layer, the liquid held in the recessed portion is guided in the longitudinal direction, and the orientation thereof is easily suppressed. Diffusion in the lateral direction. Therefore, menstrual blood does not leak in the lateral direction and easily penetrates into the liquid absorbing layer. Further, in the present invention, the height dimension from the bottom of the recess to the top of the horizontal rib is smaller than the height dimension from the bottom of the recess to the top of the vertical rib. The liquid-obtaining layer is a person who penetrates the menstrual blood into the recessed portion and then immediately penetrates the menstrual blood into the liquid-absorbing layer. However, even if a large amount of menstrual blood is given to the recessed portion at one time, the menstrual blood passes through the lower The horizontal ribs move to the recessed portions that are side by side in the longitudinal direction, so it is easy to prevent the spread in the lateral direction. For this reason, it is preferable that each of the above-mentioned recesses has a length dimension in the longitudinal direction that is longer than a width dimension in the horizontal direction. Further, in the present invention, the space volume of one recessed portion is preferably 8 to 80 mm3. When the space volume of one recess is within the above range, it is menstrual blood with a higher viscosity of body fluids. The recess can hold menstrual blood until the liquid obtains a layer, even if a large amount of menstrual blood is administered in a short time. The menstrual blood rarely overflows from the recess, which can prevent the menstrual blood from seeping back to the surface sheet, and can prevent the menstrual blood from spreading in the lateral direction. Furthermore, in the present invention, the liquid-obtaining layer is generated by concentrating the tensile stress when the water-absorbing -9-1231202 (6) sheet is three-dimensionally deformed, and the space between the fibers is pulled apart (broadened) to generate. Low density part. When a low-fiber density portion is formed in the liquid-obtaining layer, menstrual blood temporarily held in the recessed portion can be immediately moved to the liquid-absorbing layer. In another aspect of the present invention, the liquid-obtaining layer is formed with a flat portion having a wider width than the vertical ribs in the longitudinal direction. The flat portion is a region that is not subjected to tensile tension or compressive force during the molding of the three-dimensional shape, so the strength does not decrease, and the fiber density is the original material, and the density is lower than that of the longitudinal ribs. Therefore, when the absorbent article is assembled, the flat portion can be held (sucked) to supply a process required for the combination processing liquid to obtain a layer. Furthermore, since the flat portion can be maintained at a relatively low density compared with the longitudinal ribs, the flat portion can function as a diffusion preventing band that prevents menstrual blood from spreading in the horizontal direction when the flat portion extends in the longitudinal direction. The flat portion may be provided at any position of the liquid-obtaining layer, but in order to effectively function as the diffusion preventing band, the flat portion is preferably formed on both sides of the liquid-obtaining layer. The flat portion may be provided at the rear end portion before the liquid obtaining layer. Furthermore, in the present invention, the liquid-obtaining layer 'is a structure in which a plurality of the above-mentioned water-absorbent sheets are overlapped, and the plurality of the above-mentioned water-absorbent sheets are collectively formed into a body shape. When the liquid-obtaining layer is constituted by a plurality of water-absorbent sheets, 'the higher the basis weight is, the higher the absorption and holding ability of the liquid' can further increase the strength of the longitudinal ribs or the transverse ribs. Furthermore, even if the wall portion of the recessed portion has a low density or yields -10- 1231202 (7) Cracks are generated. Once the wall portion is formed of a plurality of sheets, a low density portion or a crack is formed. The part will not be concentrated in one place, and it is possible to prevent the above-mentioned wall portion from being extremely reduced in strength. Therefore, even when the absorbent article is in a wet state, it can always be maintained in the shape of the recess. Further, in the present invention, it is preferable that the tensile rupture strength when the above-mentioned liquid-obtained layer in a dry state is stretched (stretched) in the longitudinal direction is 2 · 5N or more per 25 mm width. In order to have the above-mentioned strength and to exhibit a water-absorbing function, the water-absorbent sheet is preferably formed of a cellulose-based fiber and a synthetic resin fiber. In addition, with the above-mentioned strength, the three-dimensional shape can be easily maintained even when subjected to pressure from the body, and the space volume of the recessed portion can be maintained for a long period of time. [Embodiment] The absorbent article of the present invention is a sanitary napkin mainly used for absorbing menstrual blood excreted from a woman's mouth. Among the two surfaces of the absorbent article, in the text, the surface facing the femoral palate is used as the skin-side surface, while the surface on the opposite side is referred to as the clothing-side surface regardless of whether there is clothing on the outside. . The term "centerline in the longitudinal direction" as used in this patent specification means a line that divides the absorbent article into two parts in the transverse direction and extends in the longitudinal direction. On the other hand, in the following first embodiment, the line in which the absorbent article is divided into two in the longitudinal direction and extended in the lateral direction is referred to as the lateral direction reference line, but the meaning of the lateral direction reference line is not necessarily horizontal. Crossing the position where the absorbent article is divided into halves in the longitudinal direction, for example, in the second implementation • 11-1231202 (8) The shape is' for a long absorbent article in the longitudinal direction suitable for a woman wearing at bedtime. When the flank is located at the front part, when the skin side surface is mounted on the body, it refers to the part that is blocked at the mouth, and the center line passing through the longitudinal direction of the part is used as the horizontal direction reference line. Fig. 1 is a plan view of the absorbent article of the present invention as the first embodiment, with the sanitary napkin 1 facing upward on the skin side; Fig. 2 is a diagram showing the sanitary napkin shown in Fig. 1 In the state of the underclothes under the cloth 'Cross section viewed from the direction of the arrow after cutting with the II-II reference line in the horizontal direction; Figure 3, an enlarged section view of the central area of the aforementioned sanitary napkin; Fig. 4 is a perspective view of the liquid obtaining layer; Fig. 5 is a sectional view taken along the line VV of Fig. 4; and Fig. 6 is a sectional view taken along the line VI-VI of Fig. 4. The sanitary napkin 1 is spaced at equal intervals from the longitudinal centerline 〇y-〇y in the transverse direction, has a right edge portion la and a left edge portion lb extending in the longitudinal direction, and has a reference line Ox from the transverse direction. -Ox The front edge portion ic and the rear edge portion of the convex curve shape that are spaced from each other at equal intervals in front and back. The right edge portion 1 a and the left edge portion 1 b are constant in the longitudinal direction including the lateral reference line Ox-Ox. The range of length protrudes toward the left and right sides, and the protruding portions form the side wings 1 A and 1 A. As shown in the sectional view of Fig. 2, the sanitary napkin 1 includes a liquid-impermeable back sheet 2 appearing on the garment-side surface and a liquid-permeable surface sheet 3 appearing on the skin-side surface. A liquid absorbing layer 4 is interposed between the back sheet 2 and the front sheet 3. Below the surface sheet 3, a liquid-permeable layer 5 is provided, and a liquid obtaining layer 6 is provided between the liquid-permeable layer 5 and the liquid absorbing layer 4 described above. The sanitary napkin 1 is locally pressurized and heated at least on the surface sheet 3 and the liquid absorbing layer 4 to form a compression groove 10 appearing on the skin side surface. The compression groove 10 is formed by embossing using a heating roller. In the state where the liquid absorbing layer 4 and the surface sheet 3 are overlapped, the flat surface heating roller is blocked on the surface of the liquid absorbing layer 4, and then the heating roller having a convex portion with an embossed pattern is blocked. A compression groove 10 is formed on the surface of the surface sheet 3 by applying pressure and heating. The compression grooves 10 are alternately formed with a high-density compression portion in which the liquid absorbing layer 4 and the surface sheet 3 are pressed into a film shape, and a non-film-like density other than the compression groove 10. The area is even higher in the middle-density compression section. The compression groove provided with the high-density compression portion and the medium-density compression portion is formed as a depression groove from the skin side surface of the sanitary napkin 1 to the back sheet 2 side. As shown in Fig. 1, the compression grooves 10 are indicated by symbols 11 to 16 to distinguish the compression grooves. Inside compression grooves 11 and 11 extending in the longitudinal direction are formed at positions equidistant from the center line 〇y-〇y in the longitudinal direction toward the right and left sides. The above-mentioned inner compression grooves 11 and 11 are such that the relative interval is narrowed at the portion of the reference line Ox-Ox in the lateral direction, and the arc curve is such that the convex side is oriented toward the centerline in the longitudinal direction 〇y-〇y. . The inner compression groove 11 and the inner compression groove η are connected to each other by a forward connection compression groove 12 and a rear connection compression groove 13. The front connecting compression groove 12 is curved so that the convex side is 13-1231202 (10) side toward the leading edge portion 1 C, and the rear connecting compression groove 13 is curved so that the convex side is toward the rear edge portion 1 d. shape. From the intersections of the inner compression grooves 11 and 11 and the front connection compression groove 12, a pair of forward extension compression grooves 14 and 1 4 are formed toward the leading edge portion lc. The front extension compression grooves 14 and 14 are opposite to each other. The center line 〇y-〇y in the longitudinal direction is equidistantly arranged on the left and right. A pair of rear extension compression grooves 15 and 15 are formed from the intersection of the inner compression grooves 11 and 11 and the rear connection compression grooves 13 toward the rear edge portion 1d. The rear extension compression grooves 15 and 15 are arranged at equal distances from left to right with respect to the longitudinal centerline 0y-0y. The above-mentioned inner compression grooves π, 11, the forward connection compression grooves 12 and the rear connection compression grooves 13, the forward extension compression grooves 14, 14 and the rear extension compression grooves 15, 15 are all formed continuously. Furthermore, the inner compression grooves 11 and 11, the front compression grooves 12 2 ′, and the rear compression grooves 13 are connected to surround a certain range of the skin-side surface of the sanitary napkin 1, and the enclosed range Become the central area 20. This central region 20 has a left-right symmetrical shape with respect to the longitudinal centerline 0y-〇y, and also has a forward-backward symmetrical shape with respect to the horizontal reference line 0x-〇x. The left and right sides of the grooves 11 and 11 are compressed inside. The outer side is formed with outer compression grooves 16 and 16. The outer compression grooves 16 and 16 are centered on the reference line Ox-Ox in the lateral direction and are formed in a range of a certain length before and after the longitudinal direction. The outer compression grooves 16 and 16 are formed in a curved shape similar to the inner compression grooves 11 and 11 and are formed at a certain interval with the inner compression grooves 11 and 11 1-14. As shown in FIG. 1, the liquid-permeable layer 5 is an elongated strip in the longitudinal direction, and the edges 5 a and 5 a on both sides and the left and right inner compression grooves 1 1 and 11 are not repeatedly located on the inner side. Compress the inside of the grooves 11 and 11. The liquid-permeable layer 5 extends beyond the front connection compression groove 12 to the leading edge portion lc, and extends beyond the rear connection compression groove 13 to the trailing edge portion Id. The front connecting compression groove 12 and the rear connecting compression groove 13 are connected to each other. The surface sheet 3 is compressed together with the liquid absorbing layer 5 and the liquid absorbing layer 4. The liquid obtaining layer 6 is rectangular, and the edges on both sides are 6h. And 6h are located on the left and right outer sides beyond the inner compression grooves 11 and 11. The leading edge portion 6i and the trailing edge portion 6j are located closer to the lateral reference line Ox-Ox than the forward connecting compression groove 12 and the rear connecting compression groove 13. In a part of the inner compression grooves 11 and 11, the surface sheet 3 is compressed together with the liquid obtaining layer 6 and the liquid absorbing layer 4. A plurality of liquid-permeable holes 25 are regularly arranged in the central area 20. As shown in FIG. 3, the liquid-pervious holes 25 are formed so as to pass through the surface sheet 3 so as to reach the liquid-permeable layer 5. It is preferable that the liquid-pervious holes 25 be passed through the liquid-pervious sheet 3 from the surface sheet 3. Layers 25 are formed. In addition, from portions other than the side edge portions 5a, 5a of the liquid-permeable layer 5, only the above-mentioned surface sheet 3 is formed with a liquid-permeable hole 25. The opening area of the liquid-permeable hole 25 is 0.2 to 8 mm 2, and the diameter of the circular liquid-permeable hole 25 in this embodiment is 0.5 to 3.2 m m. The distance from the centers of adjacent liquid-permeable holes 25 is 1.5 to 8 mm. -15- 1231202 (12) The surface sheet 3 and the liquid-permeable layer 5 include thermoplastic fibers capable of being heat-sealed. In a state where the surface sheet 3 and the liquid-permeable layer 5 are overlapped, the liquid-permeable hole 25 is formed by inserting, pulling out a needle or a pin from the surface sheet 3 toward the liquid-permeable layer 5. On the inner surface and the periphery of the liquid-permeable hole 5, the thermoplastic fibers contained in the surface sheet 3 and the thermoplastic fibers contained in the liquid-permeable layer 5 are fused to each other. Thereby, while the shape of the opening of the liquid-permeable hole 25 can be maintained, the periphery of the opening of the liquid-permeable hole 25 can be reinforced by the liquid-permeable layer 5. Since the surface sheet 3 and the liquid-permeable layer 5 are joined by the thermal fusion, the surface sheet 3 and the liquid-permeable layer 5 do not need to be adhered with an adhesive, so that the permeation of the liquid is not prevented by the adhesive. The surface sheet 3 is formed of an air-through nonwoven fabric. This air-laid non-woven fabric uses a core-sheath type composite synthetic fiber whose core portion is polyethylene terephthalate (PET) containing titanium oxide and whose sheath portion is polyethylene (PE). Those who are joined by hot air have a basis weight of about 15 to 60 g / m 2. The above-mentioned composite synthetic fibers constituting the surface sheet 3 are those having a hydrophilic oil coating and those having a water-repellent oil coating, and the mixing ratio of the fibers having the water-repellent oil coating is 10 to 30% by mass. By making the surface sheet 3 uniformly contain the water-repellent oil coating fiber in such a way as to become the above-mentioned mixing ratio, the menstrual blood received by the surface sheet 3 can be prevented from being excessively diffused in the surface sheet 3, and the menstrual blood mainly passes through the liquid-permeable hole 2 5 was applied to the liquid absorbing layer 4. However, the surface sheet 3 may pass menstrual blood through the liquid-permeable layer 5 in a region other than the liquid-permeable holes 25. In order to exert such a liquid-permeation function, the density of the surface sheet 3 is preferably 0.12 g / c m 3 or less, and the lower limit thereof is about -16-1231202 (13) 0.025 g / c m 3. The liquid-permeable layer 5 'is formed of an air-laid nonwoven fabric formed of a core-sheath type composite synthetic fiber having a core portion of polypropylene (PP) and a sheath portion of polyethylene (PE). The air-permeable non-woven fabric of the liquid-permeable layer 5 is formed only of fibers having a hydrophilic oil agent coating, and does not contain water-repellent oil agent coating fibers. In the embodiment shown in FIG. 3, the liquid-permeable layer 5 is constituted by overlapping the air-laid nonwoven fabric with a plurality of sheets, for example, one air-laid nonwoven fabric is folded into two sheets, three sheets, or four sheets. To use. The basis weight of one piece of non-woven fabric is about 15 to 50 g / m 2, and the basis weight of the entire liquid-permeable layer 5 may be about 30 to 150 g / m 2, and more preferably 50 to 100 g / m 2. By making the basis weight of the liquid-permeable layer 5 larger than the basis weight of the surface sheet 3, the surface sheet 3 having a lower basis weight and density can be reinforced, and excessive creases or creases on the surface sheet 3 can be prevented. Damage or the like occurs in the portion of the liquid-permeable hole 25. The fiber density of the liquid-permeable layer 5 is lower than the fiber density of the surface sheet 3. The fiber density of the liquid-permeable layer 5 is 0.016-0.08 g / c m3. Further, for example, the surface sheet 3 is composed of a fiber having a fineness of 2.2 dtex, and the liquid-permeable layer 5 is composed of a fiber having a fineness of 4.4 dt ex. The density of the liquid-permeable layer 5 is lower than that of the surface sheet 3. Since the liquid-permeable layer 5 is formed of fibers having a larger fineness, the liquid-permeable layer 5 can exhibit cushioning properties. Therefore, by providing the liquid-permeable layer 5 in a certain wide range centered on the longitudinal centerline 〇y-〇y, this certain range can give a soft touch to the body. The liquid-obtaining layer 6 is provided with a liquid-absorptive function, a permeation function, and a shape-retaining sheet 8 'as shown in Fig. 4 to -17-1231202 (14) to the three-dimensional shaper. The water-absorbent sheet 8 in this embodiment contains cellulose-based fibers and synthetic resin fibers. In this embodiment, as the cellulose-based fiber, chemical pulp is used, and as the synthetic resin fiber, a core-sheath composite synthetic fiber having a core portion of polyethylene terephthalate (PET) and a sheath portion of polyethylene (PE) is used. Air laid nonwoven fabric (air-formed pulp). The air-laid non-woven fabric is formed by laminating the above-mentioned fibers in a space to form a woven network, in which an adhesive such as an emulsion of an ethylene-acetic acid copolymer is in a range of 5 to 20% by mass of the entire non-woven fabric and has a sheet shape. The liquid obtaining layer 6 is for absorbing menstrual blood and penetrating the liquid absorbing layer 4 toward the liquid absorbing layer 4. Therefore, in the water-absorbent sheet 8, it is preferable that the total amount of the fiber contains 20% by mass or more of the chemical pulp. In order to maintain the three-dimensional shape as shown in Fig. 4 even in a wet state containing menstrual blood, it is desirable to also include 20% by mass or more of the synthetic resin fibers. That is, the ideal range of the mass ratio of the chemical pulp and the synthetic resin fiber forming the water-absorbing sheet is 80:20 to 20:80. In order to maintain the three-dimensional state of the liquid obtaining layer 6 as shown in FIG. 4, the basis weight of the water-absorbent sheet 8 is preferably 20 to 200 g / m 2. In order to maintain this basis weight, one sheet of the water-absorbent sheet 8 or an air-laid nonwoven fabric may be used, or two sheets may be folded or three sheets may be stacked. The tensile breaking strength of the liquid-obtaining layer 6 after being made into a three-dimensional shape as shown in FIG. 4 when dried is preferably one having a length of 25 m m and a height of 2.5 N or more in both the X direction and the Y direction. The tensile rupture strength is a test piece of layer 6 obtained by forming a thin liquid with a width of 25 mm in the X direction and the Y direction, and clamped at a chuck spacing distance of 100 mm '-18-1231202 ( 15) The maximum load measured when the chuck is stretched at 100 mm / m in. The tensile strength of the liquid-obtaining layer 6 in a wet state after absorption of artificial menstrual blood is described below, and is preferably 20% or more of the strength at the time of drying, and more preferably 30% or more. . As long as the above-mentioned basis weight and tensile strength are provided, the liquid-obtaining layer 6 can easily maintain a three-dimensional shape when it is dry and absorbs menstrual blood moisture, and the concave portion of the liquid-obtaining layer 6 can perform the function of maintaining and repeatedly receiving menstrual blood. As long as the basis weight and tensile rupture strength are provided, the liquid-obtaining layer 6 may be other than the above-mentioned air-laid nonwoven fabric. For example, an air-laid nonwoven fabric composed of only pulp bonded with an adhesive may be used. Alternatively, the cellulose-based fibers and the synthetic resin fibers may be interwoven with a water jet to form a spunlace nonwoven fabric. Or, a water-jet nonwoven fabric composed of at least one of cellulose fiber pulp and a grate as the main body, and an air-through nonwoven fabric composed of synthetic resin fibers as the main body are integrated by water spraying or heat sealing. Can also be changed. Either the above water-jet nonwoven and pointbond nonwoven fabric, or the above-mentioned water-jet nonwoven and spunbond nonwoven fabric are similarly integrated, or the water-jet nonwoven with cellulose fiber as the main body and It is also possible to join a film having a large number of openings. When the liquid-obtaining layer 6 is formed of a plurality of types of fibers, the content of the cellulose-based fibers is higher when the liquid-permeable layer 5 side is used than the liquid-absorbent layer 4 side. The layer 5 is drawn in towards the liquid acquisition layer 6. Conversely, if the content of the cellulose-based fibers facing the liquid-absorbing layer 4 side is high, it is easy to move the menstrual blood toward the liquid-absorbing layer -19-1231202 (16) 4. As shown in Fig. 4, the liquid obtaining layer 6 is formed with vertical ribs 6a that deform the convex side toward the surface sheet 3, and horizontal ribs 6b that deform the convex side toward the same surface sheet 3. The longitudinal ribs 6a are formed to extend linearly in the longitudinal direction (Y direction), and are formed in parallel to each other at equal intervals in the lateral direction. The lateral ribs 6b are formed by connecting the longitudinal ribs 6a and 6a adjacent to each other. Although the horizontal ribs 6b are formed at a certain interval and parallel in the longitudinal direction, the lateral ribs 6b adjacent to each other in the lateral direction are not located on the same line, and the lateral ribs 6b juxtaposed in the longitudinal direction are adjacent to the adjacent longitudinal direction. The parallel horizontal ribs 6b are positions which are arranged so as to be shifted from each other. A recessed portion 6c facing the liquid absorbing layer 4 is formed in a portion surrounded by the longitudinal ribs 6a and the lateral ribs 6b. The recessed portion 6c has a length dimension in the Y direction that is larger than a width dimension in the X direction. Long shape. Most of the recessed portions 6c of the liquid-obtaining layer 6 are arranged regularly. The liquid-obtaining layer 6 has flat portions 6f and 6f in a range of a certain width Wa from the side edges 6h and 6h toward the inside. The flat portions 6f and 6f do not form the recessed portions 6c. The flat portions 6f and 6f are wider than the width of the vertical ribs 6a described later. The width Wa of the flat portions 6f is more than 1.2 to 10 times the width of the vertical ribs 6a. It is 2 to 5 times. In this embodiment, flat portions 6f and 6f are formed on both sides of the liquid-obtaining layer 6, and the above-mentioned concave portions 6c are regularly arranged over the entire area sandwiched by the flat portions 6f and 6f. However, a certain range of flat portions facing the inside of the front edge portion 6i and the rear edge portion 6j of the layer 6 from the liquid may be used. At this time, the width of the flat portion of the front edge portion 6i and the rear edge portion 6j is 1.2 to 10 times or more, and more preferably 2 to 5 times the width of the horizontal rib -20-1231202 (17) 6b. . As shown in Fig. 6, the height dimension hi from the bottom of the recessed portion 6c to the top of the vertical rib 6a is higher than the height dimension h2 from the bottom to the top of the horizontal rib 6b. Moreover, as shown in FIG. 3, the top of the vertical ribs 6a is bonded to the lower surface of the liquid-permeable layer 5 by a hot-melt adhesive, and the bottom of the recessed portion 6c is bonded to the hot-melt adhesive. The upper surface of the liquid absorbing layer 4. That is, the tops of the respective vertical ribs 6a are located on the same plane, and the tops of the respective vertical ribs 6a are abutted against the liquid-permeable layer 5, and the bottoms of the respective recessed portions 6c are located on the same plane, and each The lower surface of the recessed portion 6c is in contact with the liquid absorbing layer 4. The flat portions 6f and 6f of the liquid obtaining layer 6 are also adhered to the lower surface of the liquid-permeable layer 5 by a hot-melt adhesive. The hot-melt adhesive is irregularly applied to the lower surface of the liquid-acquisition layer 6 (the surface facing the clothing side) and a part of the surface of the liquid-absorbent layer 4 (the surface facing the skin side) to pass the menstrual blood from the liquid-permeable layer. The penetration of 5 into the liquid-acquiring layer 6 and the penetration of menstrual blood from the liquid-obtaining layer 6 toward the liquid-absorbing layer 4 are not hindered by the above-mentioned hot-melt adhesive. As described above, the top of the horizontal rib 6b is lower than the top of the vertical rib 6a. Therefore, at least a part of the majority of the existing horizontal ribs 6b is not attached to the liquid-permeable layer 5, and is located on the top of the horizontal rib 6b. A minute gap is formed with the liquid-permeable layer 5. As described later, the liquid-obtaining layer 6 is formed into a three-dimensional shape by a flat water-absorbent sheet 8 that is sandwiched by a forming roll. When the molding is imparted to the three-dimensional shape, tensile stress is concentrated on the wall portion 6e '-21-1231202 (18) of the recessed portion 6c. Therefore, a separating force acts on the fibers of the wall portion 6e, and therefore, the wall portion 6e, There are portions where the fiber density is lower than the top of the vertical ribs 6a, the top of the horizontal ribs 6b, and the bottom 6d of the recessed portions 6c. Further, in the wall portion 6e, there is a portion where cracks occur due to the stress concentration. However, at the top of the longitudinal rib 6a and the bottom 6d of the recessed portion 6c, the fibers forming the water-absorbent sheet 8 are pressurized, so that the fiber density in the portion is increased. In addition, since the flat portion 6f has no pressure during molding, the density of the flat portion 6f is lower than that of the top portion of the vertical rib 6a and the bottom portion 6d of the recessed portion 6c. The average density of the liquid-acquiring layer 6 is higher than that of the surface sheet 3 and the liquid-permeable layer 5, and the fiber density of the liquid-absorptive layer 4 below it is higher than the average density of the liquid-acquiring layer 6. Since the longitudinal ribs 6a of the liquid obtaining layer 6 abut the liquid-permeable layer 5, and the bottom 6d of the recessed portion 6c abuts the liquid-absorbing layer 4, the menstrual blood can easily pass from the surface sheet 3 through the liquid-permeable layer 5 through the density gradient described above. On the other hand, moving toward the liquid acquisition layer 6 makes it easier to move from the liquid acquisition layer 6 toward the liquid absorption layer 4. In addition, as described above, the wall portion 6e of the recessed portion 6c of the liquid-acquisition layer 6 has a portion where the fibers are separated so that the density is low, and further, there are cracks, so it is temporarily stored in the recessed portion 6c. Menstrual blood can be quickly moved to the liquid absorbing layer 4. In order to make menstrual blood move quickly from the liquid guide layer 5 to the liquid acquisition layer 6, and it is desired to quickly make it from the liquid acquisition layer 6 to the liquid absorption layer 4, the average density of the liquid acquisition layer 6 is 0.05 to 0.25 g / cm 3 is ideal, and the fiber density of the liquid absorbing layer 6 located below the liquid obtaining layer 6 is preferably 0.07 to 0.25 g / cm 3. -22- 1231202 (19) The wide size of the height position of (1/2) .hi of the longitudinal rib 6a, and the wide size of 2 ~ 10mm at the height position of (1/2) · h2 of the horizontal rib 6b , Ideally 2 ~ 6mm. The height hi of the liquid obtaining layer 6 is 1.3 to 5 mm. In order to allow the menstrual blood penetrating through the surface sheet 3 to be sufficiently accumulated in the recessed portion 6c, the opening area at the height position of (1/2) h2 of one of the recessed portions 6c is preferably 5 to 20 mm, and the space of the recessed portion 6c is also ideal. The volume {the above-mentioned area X (height hi-thickness of the water-absorbing sheet)} is preferably 8 to 80 mm. The aspect ratio of the opening dimension of another recess 6c at the height position of (1/2) h2, that is, (the longitudinal dimension in the Y direction) / (the wide dimension in the X direction) is in the range of 1.1 to 10 as Ideally, it is preferably 1.5 to 7, and more preferably 2 to 5. If the aspect ratio is less than the above range, the guide function of the menstrual blood obtained in the liquid obtaining layer 6 in the longitudinal direction will be reduced, which may increase the possibility of spreading in the lateral direction. If the aspect ratio exceeds the above range, , The interval between the lateral ribs 6b is too wide, and when it receives a compressive force from the thighs and the like in the lateral direction, it will reduce the elastic restoring force to expand in the lateral direction. In the liquid obtaining layer 6, the lateral ribs 6b are formed at intervals in the longitudinal direction. With respect to the sanitary napkin 1, the front edge portion 1c and the rear edge portion 1d are exposed in a direction close to each other and on the skin side. When the surface has a concave bending force, the liquid obtaining layer 6 can follow the deformation and easily bend. Especially when the aspect ratio of the recessed portion 6c is within the above range, the liquid obtaining layer 6 can be easily bent in the above direction. The liquid-obtaining layer 6 can follow the bending deformation of the sanitary napkin 1 in combination with the liquid, and the liquid-obtaining layer 6 and -23 ·

X (20) 1231202 透液層5之界面便難以產生剝離。 如第4圖所示，由於橫肋6 b是在朝向橫向方向< 方向）上相互錯開被配置，所以液體獲得層6如上述般 易於朝向縱向方向彎曲。再者，由於橫肋6b之高度h2 縱肋高度h 1還要低，因此，液體獲得層6易於使側緣 6 h與6 h相互接近而且朝向肌膚側的面容易朝向呈凹狀 向變形。 上述吸液層4，是在粉碎紙漿、纖維素鹼化紙漿、 聯紙漿等之紙漿及集合體，使之含有聚丙烯酸鹽、聚丙 醯胺、順丁烯二酸酐鹽等之合成吸水聚合物、或澱粉、 維素等之天然系之吸收聚合物者，紙漿及上述合成吸水 合物等，是使用以親水性之纖維紙包住者。 上述背面薄片2，爲不透液性且具通氣性之薄片， 形成有細微通氣孔之聚乙烯（PE )薄膜、或聚丙烯（ )薄膜等。例如，藉由在上述之塑膠薄片混合以CaC0: B aS 04等之無機塡充料並延伸處理之，於薄膜會形成適 分散之細微通氣孔，使通氣性提昇者，而其厚度爲15 50 // m左右者。 如第2圖所示，於肌膚側表面之左右兩側設置有不 液性薄片3 0，於上述側翼部1 A、1 A及後部後翼1 B、 ’上述不透液性薄片3 0、3 0，藉由熱熔接著劑接著於 面薄片2之上。從縱長方向中心線〇y-〇y朝左右等距 開離之位置，不透液性薄片3 0被折疊成2片重疊，於 內部接著有延伸於縱長方向之彈性構件3 2。藉由上述 可 比 部 方 交 烯 纖 聚 爲 PP 當 透 1 B 背 離 其 彈 -24- 1231202 (21) 性構件32，於生理用衛生棉1之前方部分與後方部分之 間彈性收縮力發揮作用，可產生將生理用衛生棉1彎曲之 作用力，其結果，生理用衛生棉1之前後之中間部分，不 透液性薄片3 0、3 0會立起形成有防漏壁3 1、3 1。 上述不透液性薄片，是由紡黏（spun bond )不織布、 熔噴（me It blown)不織布、或將此等積層之複合不織布 所形成。 吸液層4之基重，於中央區域20中爲最大。被夾於 內側壓縮溝U、Π及外側壓縮溝16、16之部分之基重比 上述中央區域20還要小。其以外之部分之吸液層4之基 重，是與被夾於內側壓縮溝11、1 1及外側壓縮溝1 6、1 6 之部分相同或稍小。 於中央區域20之吸液層4之理想基重，爲400〜 1200g/m 2，更佳者爲500〜1000g/m 2。被夾於上述內側 壓縮溝1 1、1 1及外側壓縮溝1 6、1 6之部分的理想基重， 爲300〜900g/m 2，更佳者爲3 5 0〜600g/m 2。又其他部 分之吸液層4之理想基重，爲200〜700g/m 2，更理想的 是 300〜500g/m 2。 其結果，如第2圖所示，在中央區域20之厚度較大 ，於中央區域20，肌膚側表面是成爲朝向身體膨脹很大 之形狀。 中央區域20之縱長方向之尺寸，亦即前方連結壓縮 溝1 2與後方連結壓縮溝1 3之縱長方向之間隔，爲5 0 m m以上。於第2圖所示之橫向方向基準線Οχ-Οχ上之中 -25· (22)· 1231202 央區域2 0之寬幅尺寸W 1，是對應女性性器之寬幅而決定 。由於女性股胯部之寬幅之平均爲30 mm左右，故上述 寬幅尺寸W1，以在15〜50 mm之範圍爲理想’又在20 〜40 mm之範圍爲更理想。 於將該生理用衛生棉1穿著於身體之時，要將設置於 背面薄片2外面之感壓接著劑接著於第2圖所示之胯下布 26之內面，將側翼部1A、1A，以把胯下布26之兩側緣 部捲入之方式，使其朝向內褲之外面彎曲，並將設置於側 翼部1 A、1 A之衣著側表面之感壓接著劑接著於胯下布26 的外面。 如第2圖所示，該生理用衛生棉1，由於其中央區域 20爲朝向身體膨脹，所以該中央區域20容易緊密貼接於 膣口。位於上述中央區域20之肌膚側表面的表面薄片3 爲低密度的氣流不織布，其下設有膨鬆度高的氣流不織布 之透液層5。因此，中央區域20給予身體之上述各部分 之接觸觸感爲軟質。 從膣口所排出之經血，主要被中央區域2 0所承接。 由於表面薄片3爲低密度之不織布，故經血雖滲透於表面 薄片3內，不過於表面薄片3塗佈有含有撥水性油劑之纖 維，故可抑制經血於表面薄片3擴散。位於表面薄片3下 方之透液層5爲氣流不織布由於其內部具有空隙，故經血 可藉由重力通過透液層5之空隙內，而落下至位於其下方 之液體獲得層6。不過受中央區域20所承接到的大部分 經血，是迅速通過透液孔2 5內，直接地朝液體獲得層6 -26- (23) 1231202 落下。 液體獲得層6，由於是形成於吸水性薄片8，故落下 至液體獲得層6之經血會受到吸水性薄片8吸收，再傳給 更下方位置之液體吸收層4。當一時有過多的經血給予表 面薄片3時，該經血雖會透過透液孔25而落下於液體獲 得層6，不過由於該經血立即被蓄積在液體獲得層6之凹 部6c內，故即使經血之排泄量較多時，也不會在表面薄 片3或透液層5做長時間滯留。因此中央區域20的肌膚 側表面得以保持幾近乾燥之狀態，不易會給予裝著者股胯 部濕潤感或是悶熱感。 在液體獲得層6之凹部6c所承接之經血，是從凹部 6c之底部6d滲透到液體吸收層4，或是透過在凹部6c之 壁部密度較低部分或龜裂部分，再被液體吸收層4快 速地吸收。又，當大量的經血被施予到凹部6c，在任一 凹部6 c，經血之量皆比該空間容積更多時，該經血會越 過較低高度的橫肋6b而移動至鄰接於縱向方向之凹部6c 。另一方面，由於位於凹部6c兩側的縱肋6a於縱向方向 平行延伸，該頂部接觸並接著於透液層5，因此經血在液 體獲得層6並不容易朝橫向方向擴散。因此當被施予多量 的經血時，該經血是一面順次移動於排列在縱向方向之凹 部6 c，一面受液體吸收層4所吸收。 再者，於上述液體獲得層6之左右兩側部，形成有朝 縱向方向延伸之平坦部6f、6f。由於該平坦部6f、6f之 纖維密度比縱肋6a還低，所以液體獲得層6即使存在有 -27- (24) 1231202 朝向橫向方向（X方向）傳導之經血，上述平坦部6f、6f 可以發揮阻止經血朝向橫向方向擴散之功能。藉此，能夠 降低對於朝向橫向方向洩漏的不安。 又，經血若由液體獲得層6之兩側緣部6h、6h更加 朝向橫向方向移動時，該經血，便會受到位於兩側位置之 內側壓縮溝1 1、1 1所阻滯，更加上亦會受到位於該外側 位置之外側壓縮溝1 6、1 6所阻滯，所以可以有效地抑止 從生理用衛生棉1之朝向橫向方向之液漏。 形成液體獲得層6之吸水性薄片8由於含有合成樹脂 纖維，所以即使在已吸收經血之濕潤狀態下也可保持立體 形狀，來自於股胯部之壓力即使作用於中央區域20時， 當該壓力除去時，也可以復原到如第.4圖所示之立體形狀 。特別是，由於設置有縱肋6a及橫肋6b，故液體獲得層 6具有優異的彈性恢復功能。 其次，說明上述生理用衛生棉1之製造方法。 首先，說明將液體獲得層6賦予第4圖所示之立體形 狀之製程。 第7圖，是用以形成液體獲得層6之上模40的立體 圖；第8圖是下模50的立體圖；第9圖是上述上模40之 IX-IX線的斷面圖。 於第7圖所示之上模40，乃形成有一同延伸於縱向 方向（Y方向）而相互平行的複數個凸部41，以及處於 鄰接上述凸部4 1與凸部4 1之間位置之溝部42。於上述 凸部4 1，於縱向方向（Y方向）隔以間隔形成有凹部4 3 -28- 1231202 (25) 。任一形成在凸部4 1之凹部43，係位於相鄰接之凸部4 1 所形成之凹部43與凹部43之中間。亦即在鄰接之凸部 4 1與凸部4 1之間，上述凹部43爲相互錯開排列。 如第9圖所示，在凸部41與凹部43的交界部，是使 凸部41之端部41a是呈圓弧曲線而連接於凹部43。如第 9圖所示，從上述溝部42之底面42a到上述凸部41之頂 部爲止之高度尺寸H1，是比從上述底面42a到上述凹部 43之頂部爲止之高度尺寸H2還要高。 第8圖所示之下模5 0，相互平行地形成有朝向縱向 方向（Y方向）延伸之凸條部51，在鄰接之上述凸條部 51、51之間形成有溝部52。上模40所鄰接之凸部41的 間距，是與下模50所鄰接之溝部52的間距相同。 上述上模40之表面及下模50之表面，以加熱到比芯 鞘型合成纖維之鞘部之聚乙烯融點還低之120 °C左右之狀 態，如第1 〇圖所示地，在上模40與下模5 0之間壓夾吸 水性薄片8。上模40與下模50，是以其凸部41咬入溝部 52，凸條部51咬入溝部42之方式組合。不過，在上模 40之凸部41頂部以及下模50之溝部52底面之間保留有 若干間隙，下模50之凸條部5 1頂部以及上模40之溝部 42底面之間保留有若干間隙之方式，上模40及下模50 以無相互加壓之方式組合。 其結果，如第10圖所示，藉由下模50之凸條部51 形成縱肋6a，藉由上模40之凸部41形成凹部6c。又藉 由上模40之凹部43使吸水性薄片8受輕微加壓，利用該 -29- 1231202 (26) 凹部43而形成上述橫肋6b。 又，於上模4 0之兩側部形成有朝向縱向方向延伸之 平面44、44，在下模50之兩側部亦形成有朝向縱向方向 延伸之平面53、53。並且，受該平面44、44以及平面53 、5 3所夾之部分，並沒有使得吸水性薄片8受到加壓， 因此形成上述平坦部6f、6f。 上模4 0與下模5 0，被加熱到比複合合成纖維之融點 還稍微低之溫度，且上模40與下模5 0在保留有間隙之狀 態，來夾入吸水性薄片8。由於是在上述溫度下且兩模以 彼此間保留有間隙之方式來囔合吸水性薄片8使之成型， 故在液體獲得層6並不會存在有使纖維熔融而呈薄膜狀之 部分，所以不會妨礙液體的透過功能。又藉由以複合合成 纖維軟化程度之溫度來加熱，故成型後可保有第4圖所示 之立體形狀。 液體獲得層6之凹部6c，是藉由縱向方向尺寸以短 間隔所區隔之凸部4 1加壓而形成，所以在成爲凹部6c之 壁部6e的薄片上集中有X方向與Y方向雙方之拉張應力 。因此，形成凹部6c之壁部6e的纖維間隔被拉開，更進 一步地依處所而產生龜裂。此時，藉由連續於縱向方向之 凸條部5 1加壓縱肋6a而形成，可以在縱肋6a之頂部使 纖維密度較高，同樣地也可以提高凹部6c之底部6d的纖 維密度。又橫肋6b之頂部的纖維密度，比上述壁部6e還 商。 又’在量產液體獲得層6時，第7圖所示之上模40 -30- (27) 1231202 ，以使γ方向爲周方向而χ方向爲軸方向之方式來形成 於輥筒表面，第8圖所示之下模50，亦使Υ方向爲周方 向而X方向爲軸方向之方式來形成於輥筒表面，兩輥筒 具有間隙而相對向’於其間供給吸水性薄片8來形成液體 獲得層6。 生理用衛生棉1之製造程序，是將表面薄片3與透液 層5重疊，形成上述透液孔25。其次，以熱熔接著劑將 液體獲得層6之縱肋6a及平坦部6f、6f予以接著在透液 層5的背面。接著以熱熔接著劑將液體獲得層之凹部6c 下面接著於液體吸收層4。在表面薄片3、透液層5、液 體獲得層6以及液體吸收層4呈重疊之狀態下，形成壓縮 溝1 〇。然後，於液體吸收層4之衣著側表面將背面薄片2 重疊而接著，於肌膚側表面，接著上上述不透液性薄片 30。 又，於液體獲得層6之兩側部，形成有朝向縱向方向 延伸之平坦部6f、6f，該平坦部6f、6f，其纖維並非如凹 部6c之壁部6e般地於纖維之間被拉開，因而具備有某種 程度的剛性，而且密度均等。因此，在生理用衛生棉1之 組裝程序中，例如可以在吸氣式輸送帶上吸住上述平坦部 6f、6f來搬運液體獲得層6，藉由該吸氣式輸送帶，可以 維持在該液體獲得層之立體形狀下來供給液體獲得層6。 上述液體獲得層6，是可以由1片吸水性薄片8來形 成，也可以由複數片吸水性薄片8重疊而形成。第5圖（ B)是顯示將2片吸水性薄片8A及8B予以重疊來形成液 -31 · 1231202 (28) 體獲得層6之例。2片的吸水性薄片8A及8B係分別由與 上述吸水性薄片8相同材料所形成。 將液體獲得層6製成立體形狀時，在凹部6c之壁部 6e有張力作用而使得纖維之間隔被拉開，依場所而形成 龜裂。不過，若是將複數片吸水性薄片重疊來使用時，則 對於上述壁部6e而言，由於在複數片吸水性薄片之各別 纖維密度較低部分或產生龜裂部分有所不同，因而不會集 中於一處。因此，可以防止凹部6c之壁部6e整體強度的 降低，提高立體形狀在受身體壓力作用，壓成平坦狀態後 之復原性。 又，可以使用複數片吸水性薄片爲部分性接著者。複 數片吸水性薄片爲含有熱可塑性纖維時，可以藉由纖維彼 此間的熔著來相互接著吸水性薄片彼此。或是，以接著劑 來接著吸水性薄片亦可。如第7圖至第1 〇圖所示，使用 加熱後之模，將液體獲得層6製成爲立體形狀時，藉由模 的熱，可以在不會成爲薄膜狀之壓力下將吸收性薄片接著 。或是，先將複數吸水性薄片在所預設的點狀接著部予以 熱接著，再利用該熱接著後之吸收性薄片之積層體，將液 體獲得層6賦予成型爲立體形狀亦可。 在接合複數片之吸收性薄片時，該接合處所，爲縱肋 6a、橫肋6b、凹部6c之壁部6e、凹部之底部6d之任一 者皆可。或是使接合處所，以不規則形成於上述全部之部 分亦可。不過至少得在凹部6c之壁部66使液體吸收薄片 彼此間相接合爲理想。 -32- 1231202 (29) 若是在縱肋6a及橫肋6b之部分設置吸水性薄片彼此 間之接著部，則可以強化縱肋6a與橫肋6b之骨格構造。 又如上述般，在凹部6c之壁部6e，由於纖維密度極端地 低，所以在該部分設置吸水性薄片之接著部時，則可以提 高凹部6c的剛性，而容易維持凹部6c的形狀。又，在凹 部6c之底部6d設有接著部時，可以提高該部分之密度， 其結果，可以使被施予到液體獲得層6之經血集中於凹部 6c之底部6d後再傳送給液體吸收層4。 第1 1圖爲本發明之吸收性物品之第2實施形態之生 理用衛生棉1 00的平面圖。又，與第1圖所示之實施形態 具有相同構造之部分則標示以相同符號並省略其詳細說明 〇 該生理用衛生棉100，是適用於就寢中等所使用長型 形態，縱向方向（Y方向）的全長尺寸，大致爲200〜 450 m m，兩側緣部la、lb，是從橫向方向基準線Οχ-Οχ 隨著朝向後緣部1 d慢慢地變寬廣之方式闊脹之形狀，形 成擋接於臀部之後方後翼IB、1B。 於肌膚側表面，形成有縱長之內側壓縮溝1 1、1 1。 內側壓縮部11、11之前方部分11A、11A，爲朝向縱向方 向中心線Ο y - Ο y之凸狀圓弧曲線圖案。又於內側壓縮溝 1 1、1 1，係形成有在上述前方部分1 1 A、1 1 A使後方相對 向間隔變寬廣之變曲部11B、11B，再者，後方部分HD 、：I 1 D，是隨著朝向後緣部1 d而慢慢地變窄，藉由後方 連結壓縮溝1 3 A而相互連結。 -33- 1231202 (30) 內側壓縮溝1 1、1 1，及前方連結壓縮溝1 2以及 連結溝13A所包圍之部分爲中央區域20。中央區域 ，由上述前方部分11A、11A所夾之部分，爲主要相 於女性膣口之前方中央區域20A ;受變曲部、IB、1 ] 夾之部分，爲主要相對向於女性會陰部之中間中央 2 0B ;受後方部分1 ID、1 1D所夾之部分，爲主要相 於肛門及臀部溝之後方中央區域20D。 又，在內側壓縮溝1 1、1 1之前方部分1 1 A、1 1 左右兩外側，形成有與第1圖相同之外側壓縮溝Η ，在內側壓縮溝1 1、1 1之後方部分1 1 D、1 1 D的左 側，形成有後方外側壓縮溝1 7、1 7，該後方外側壓 1 7、1 7是在後緣部1 d的內側相互連結。 在該實施形態中，其透液層5是從前緣部1 c到 部Id設置形成帶狀，又在上述中央區域20，設有與 圖所示相同立體形狀之液體獲得層6。. 中央區域20，是形成於由前方連結壓縮溝1 2到 連結壓縮溝13A爲止之縱向方向長度爲120〜3 5 0 m 長型範圍，而上述液體獲得層6，至少是被設置在作 膣口相對向之部分之前方中央區域20A。或是如第\ 所示，上述液體獲得層6亦可以是設置在前方中央 20A，到相對向於會陰部之中間中央區域20B。 〔實施例〕 形成以下之各層 後方 20中 對向 所 區域 對向 A的 )' 16 右外 縮溝 後緣 [第4 後方 m之 爲與 I 1圖 區域 -34- 1231202 (31) (〇表面薄片3 使用以纖維質量之1.1 %之比率包含有氧化鈦之聚對 苯二甲酸乙酯爲芯部，聚乙烯爲鞘部之芯鞘型複合合成纖 維（2.2dtex，纖維長44 m m )形成之氣流 （air-through )不織布，基重爲25g/m 2者。 在以下之測定，使用了寬度130 m m、長度200 m m 、重量0.63 7g者。 (b )透液層5 是使用芯部爲聚丙烯、鞘部爲聚乙烯之斷面呈偏芯形 狀之芯鞘型複合合成纖維（4.4dtex，纖維長50 m m )之 氣流不織布（基重20 g/m 2)，平均厚度爲1.75mm、平 均密度爲〇.〇175g/cm 3者以3片重疊而折疊者。 在以下之測定，使用了寬度l〇〇mm、長度200mm 、重量0.4 1 5 g者。 (c )透液孔25 將上述表面薄片3與透液層5重疊，以具有l〇〇t之 銷之輥筒’以及具有供上述銷插入之穴之70 t的輥筒， 由表面薄片3形成貫通透液層5之透液孔25。透液孔25 之開口直徑爲2 mni，間距在γ方向爲5.5 mm，在X 方向爲3 · 5 m m做排列。 -35· 1231202 (32) (d)液體獲得層6 以含有：化學紙漿佔6 0質量％ ;芯部爲聚對苯二甲 酸乙酯、鞘部爲聚乙烯之芯鞘型複合合成纖維（i.7dteX ，纖維長13 mm)佔26質量％ ’乙烯醋酸乙嫌共聚合體 之接著劑佔1 4質量％之不織布（氣流成型紙獎）’將基 重40g/m 2者2片重疊而折疊者作爲吸水性薄片8來使用 〇 在以下之測定，使用了寬度5〇 m m、長度100 m m 、重量0.205g者。 表1的比較例1，是不讓上述吸水性薄片8不呈立體 變形，而直接作爲液體獲得層6使用。在乾燥狀態時之上 述吸水性薄片8以5次所測定之平均厚度爲〇 · 9 2 8 m m。 立體成型前之上述吸水性薄片8的平均密度爲 0.0 7 5 g/c m 3，液體獲得層6成爲立體形狀之後於測定Y 方向及 X方向之乾燥時的拉伸破裂強度，分別爲 3.46N/25 m m 以及 2.83N/25 m m。 將上述吸水性薄片8予以立體成型而取得液體獲得層 6。其縱肋6a之（hi )/2高度下之寬幅尺寸爲3 mm，橫肋 6b之（h2)/2高度下之寬幅尺寸爲2.5 mm，在（h2)/2高度 位置之凹部6c的開口面積爲15 m m 2。 不過，顯示於表1之比較例2，分別於實施例1〜實 施例8中’是使上述上模40與下模5〇相對向間隙有所變 化’在乾燥狀態下使液體獲得層6之厚度（第6圖之h i )變化。 -36- 1231202 (33) 比較例2，由於其上述厚度爲1·192 mm，故凹部6c 之空間容積爲{15χ(1·192-0·928) } =3.96 mm 3，若 同樣地計算時，實施例中厚度最小之實施例2爲8 · 6 1 m m 3，厚度最大之實施例8爲3 2 · 64 m m 3。亦即在實施例 中之凹部的空間容積是從8.361到32.64 m m 3。 (e )液體吸收層4 將化學紙漿8g、吸水性聚合物〇·1 5g均一地混合，以 15 g/m 2之纖維紙包覆成寬度70 mm '長度200 mm、 密度0.069g/c m 3之積層體來作爲液體吸收層4。 (1 )厚度測定 加壓後之乾燥時以及濕潤狀態之厚度測定是使用大榮 科學精器製作所所製造之UF-60A來測量。 (2 )滴落性測試 將表1之比較例1至實施例8之各別之液體獲得層6 固定在容積爲5 0 m 1的燒杯開口部。從離開液體獲得層 6中央部上方5 m m處，使用自動滴定管讓人工經血以3 m 1/m in之流量連續地滴落下。測定從落下開始，到液 體最初滴落至燒杯內之時間（單位爲秒）。 在此，人工經血，是在4公升的離子交換水中，加入 甘油300g、羧甲基纖維素（CMC)之鈉鹽30g、氯化鈉 4 〇g加以攪拌後，再以紅色食用色素著色者來使用。 -37- 1231202 (34) (3 )加壓吸收測試 如第12圖（B )所示，在平坦的測試台61上，使液 體吸收層4、液體獲得層6、以及透液層5及表面薄片3 製成一體者依順序重疊。在最上部將第12圖（A)所示 尺寸的壓克力板62使其開口部62a與中央一致之方式來 設置。並且，在開口部62a的前後，分別乘載900g之荷 重63、63。又，壓克力板本身自重爲ii5g。 將上述人工經血，以使用自動滴定管，於上述開口部 6 2 a內’以9 5 m 1 / m i η之流量供給進行，第i次供給3 m 1，測量從開始供給液體，到在開口部6 2 a之表面薄片 3表面的液體消失之時間（秒）。從第1次於表面薄片3 之表面液體消失起經過3 0秒之後，施予4 m 1作爲第2 次’同樣地量測滲透時間。第2次的液體從表面薄片3之 表面消失後，再經過5分鐘後，施予3 m 1之液體作爲第 3次，同樣地測量滲透時間。 在第3次所供給的液體從表面薄片3之表面消失後， 再經過1分鐘後，將壓克力板62以及荷重63、63卸下， 測定各別之液體獲得層6的厚度。並且，以（加壓後之上 述厚度/乾燥時之厚度）X 100 ( % )作爲厚度變化率來計 算。 將測定結果顯示於以下之表1。 •38- 1231202The interface of X (20) 1231202 liquid-permeable layer 5 is difficult to peel off. As shown in FIG. 4, since the lateral ribs 6 b are arranged staggered from each other in the lateral direction (direction (direction)), the liquid obtaining layer 6 is easily bent in the longitudinal direction as described above. Furthermore, since the height h2 of the horizontal ribs 6b and the height h1 of the vertical ribs are even lower, the liquid acquisition layer 6 is apt to bring the side edges 6 h and 6 h close to each other and the surface facing the skin side is liable to deform toward the concave shape. The liquid-absorbent layer 4 is a synthetic water-absorptive polymer that pulverizes pulp and aggregates of pulp, cellulose alkalized pulp, and pulp, and contains polyacrylate, polypropyleneamine, and maleic anhydride. Or natural absorbent polymers such as starch and vitamins, pulp and the above-mentioned synthetic water-absorbents are those covered with hydrophilic fiber paper. The back sheet 2 is a liquid-impermeable and air-permeable sheet, and a polyethylene (PE) film or a polypropylene (A) film having fine vent holes is formed. For example, by mixing the above-mentioned plastic sheet with inorganic rhenium such as CaC0: B aS 04, and extending the treatment, finely dispersed vent holes can be formed in the film to improve the air permeability, and its thickness is 15 50 // Around m. As shown in FIG. 2, liquid-impermeable sheets 3 0 are provided on the left and right sides of the skin-side surface, and the side flaps 1 A, 1 A and the rear rear wings 1 B, 'the liquid-impermeable sheet 3 0, 30, adhered to the surface sheet 2 by a hot-melt adhesive. The liquid-impermeable sheet 30 is folded into two overlapping layers from the longitudinally centered line 〇y-〇y at an equidistant distance from left to right, followed by an elastic member 32 extending in the longitudinal direction. By using the above-mentioned comparable parylene fiber to be PP when 1 B is turned away from its elastic -24-1231202 (21) sex member 32, the elastic contraction force acts between the front part and the rear part of the sanitary napkin 1. The bending force of the sanitary napkin 1 can be generated. As a result, the liquid-impermeable sheet 3 0, 3 0 in the middle portion of the sanitary napkin 1 before and after the sanitary napkin 1 rises to form a leak-proof wall 3 1, 3 1 . The liquid-impermeable sheet is formed of a spun bond nonwoven fabric, a melt blown nonwoven fabric, or a laminated composite nonwoven fabric. The basis weight of the liquid absorbing layer 4 is the largest in the central region 20. The basis weights of the portions sandwiched by the inner compression grooves U, Π and the outer compression grooves 16, 16 are smaller than those of the central region 20 described above. The basis weight of the liquid absorbing layer 4 other than that is the same as or slightly smaller than the portion sandwiched between the inner compression grooves 11 and 11 and the outer compression grooves 16 and 16. The ideal basis weight of the liquid absorbing layer 4 in the central region 20 is 400 to 1200 g / m 2, and more preferably 500 to 1000 g / m 2. The ideal basis weight of the portion sandwiched between the inner compression grooves 11 and 11 and the outer compression grooves 16 and 16 is 300 to 900 g / m 2, and more preferably 3 50 to 600 g / m 2. The ideal basis weight of the liquid absorbing layer 4 in other parts is 200 to 700 g / m 2, and more preferably 300 to 500 g / m 2. As a result, as shown in FIG. 2, the thickness of the central region 20 is large, and the skin-side surface of the central region 20 has a large swelling shape toward the body. The size of the central region 20 in the longitudinal direction, that is, the longitudinally-oriented interval between the forward-compression compression groove 12 and the backward-compression compression groove 13 is 50 mm or more. In the transverse direction reference line 0χ-Οχ shown in Figure 2, -25 · (22) · 1231202 The wide size W 1 of the central area 20 is determined according to the width of the female sex device. Since the average width of the female crotch is about 30 mm, the above-mentioned wide size W1 is preferably in the range of 15 to 50 mm 'and more preferably in the range of 20 to 40 mm. When the sanitary napkin 1 is worn on the body, the pressure-sensitive adhesive provided on the outer surface of the back sheet 2 is adhered to the inner surface of the chin cloth 26 shown in FIG. 2, and the side wings 1A, 1A, The side edges of the underclothes 26 are wound so that they are bent toward the outer surface of the panties, and the pressure-sensitive adhesive provided on the side surfaces of the clothing 1 A and 1A is attached to the underclothes 26 Outside. As shown in Fig. 2, since the central area 20 of the sanitary napkin 1 is swelled toward the body, the central area 20 is easily in close contact with the crotch. The surface sheet 3 located on the skin-side surface of the central region 20 is a low-density air-laid nonwoven fabric, and a liquid-permeable layer 5 of the air-laid nonwoven fabric having a high bulkiness is provided below. Therefore, the contact feeling given to the above-mentioned parts of the body by the central region 20 is soft. The menstrual blood discharged from the mouth is mainly taken by the central area 20. Since the surface sheet 3 is a low-density non-woven fabric, although the menstrual blood penetrates into the surface sheet 3, the surface sheet 3 is coated with a fiber containing a water-repellent oil agent, and the menstrual blood can be suppressed from spreading on the surface sheet 3. The liquid-permeable layer 5 located under the surface sheet 3 is an air-laid non-woven fabric. Because of its internal voids, menstrual blood can pass through the voids of the liquid-permeable layer 5 by gravity and fall to the liquid obtaining layer 6 below it. However, most of the menstrual blood received by the central area 20 quickly passed through the liquid-permeable holes 25 and directly fell toward the liquid-acquiring layer 6 -26- (23) 1231202. Since the liquid-obtaining layer 6 is formed on the water-absorbent sheet 8, menstrual blood falling down to the liquid-obtaining layer 6 is absorbed by the water-absorbent sheet 8 and passed to the liquid-absorbent layer 4 at a lower position. When too much menstrual blood is given to the surface sheet 3 at one time, although the menstrual blood will fall through the liquid-permeable hole 25 and fall into the liquid obtaining layer 6, the menstrual blood is immediately accumulated in the recess 6c of the liquid obtaining layer 6. When the excretion amount is large, it will not stay on the surface sheet 3 or the liquid-permeable layer 5 for a long time. Therefore, the skin-side surface of the central region 20 can be kept almost dry, and it is difficult to give the wearer a feeling of moisturization or sultry in the thigh area. The menstrual blood received by the recessed portion 6c of the liquid acquisition layer 6 penetrates from the bottom 6d of the recessed portion 6c to the liquid absorbing layer 4, or passes through the lower density portion or cracked portion of the wall portion of the recessed portion 6c, and is then absorbed by the liquid absorbing layer. 4 Absorbs quickly. In addition, when a large amount of menstrual blood is administered to the recessed portion 6c, when the amount of menstrual blood is greater than the volume of the space in any of the recessed portions 6c, the menstrual blood passes over the lower rib 6b and moves to a position adjacent to the longitudinal direction. The recess 6c. On the other hand, since the longitudinal ribs 6a located on both sides of the recessed portion 6c extend in parallel in the longitudinal direction, and the top contacts and continues to the liquid-permeable layer 5, the menstrual blood does not easily diffuse in the lateral direction in the liquid-obtaining layer 6. Therefore, when a large amount of menstrual blood is administered, the menstrual blood is sequentially moved to the concave portions 6 c arranged in the longitudinal direction, and is absorbed by the liquid absorbing layer 4. Further, flat portions 6f, 6f extending in the longitudinal direction are formed on the left and right side portions of the liquid obtaining layer 6. Since the flat portions 6f and 6f have a lower fiber density than the longitudinal ribs 6a, even if menstrual blood is transmitted in the lateral direction (X direction) in the liquid acquisition layer 6, the flat portions 6f and 6f can The function of preventing menstrual blood from spreading in a lateral direction is exerted. This can reduce anxiety about leakage in the lateral direction. In addition, if the menstrual blood 6h, 6h on both sides of the liquid acquisition layer 6 moves more laterally, the menstrual blood will be blocked by the inner compression grooves 1 1 and 1 1 located on both sides, and the upper the Since it is blocked by the compression grooves 16 and 16 located outside the outer position, it is possible to effectively suppress the liquid leakage from the sanitary napkin 1 in the lateral direction. Since the water-absorbent sheet 8 forming the liquid obtaining layer 6 contains synthetic resin fibers, it can maintain a three-dimensional shape even in a wet state in which menstrual blood has been absorbed. Even when the pressure from the femoral region acts on the central region 20, when the pressure When removed, it can be restored to a three-dimensional shape as shown in Fig. 4. In particular, since the longitudinal ribs 6a and the lateral ribs 6b are provided, the liquid obtaining layer 6 has an excellent elastic recovery function. Next, a method for manufacturing the aforementioned sanitary napkin 1 will be described. First, a process for providing the liquid-acquiring layer 6 with a three-dimensional shape as shown in Fig. 4 will be described. Fig. 7 is a perspective view of the upper mold 40 for forming the liquid obtaining layer 6; Fig. 8 is a perspective view of the lower mold 50; and Fig. 9 is a sectional view taken along line IX-IX of the upper mold 40. The upper die 40 shown in FIG. 7 is formed with a plurality of convex portions 41 extending in the longitudinal direction (Y direction) and parallel to each other, and is located adjacent to the convex portion 41 and the convex portion 41.沟 部 42。 The groove portion 42. Recesses 4 3 -28-1231202 (25) are formed on the convex portion 41 at intervals in the longitudinal direction (Y direction). Any of the recessed portions 43 formed in the protruding portion 41 is located between the recessed portion 43 and the recessed portion 43 formed by the adjacent protruding portions 41. That is, between the adjacent convex portions 41 and the convex portions 41, the above-mentioned concave portions 43 are arranged staggered from each other. As shown in Fig. 9, at the boundary between the convex portion 41 and the concave portion 43, the end portion 41a of the convex portion 41 is connected to the concave portion 43 in an arc curve. As shown in Fig. 9, the height dimension H1 from the bottom surface 42a of the groove portion 42 to the top portion of the convex portion 41 is higher than the height dimension H2 from the bottom surface 42a to the top of the concave portion 43. The lower die 50 shown in Fig. 8 is formed with convex portions 51 extending in the longitudinal direction (Y direction) in parallel with each other, and a groove portion 52 is formed between the adjacent convex portions 51 and 51. The pitch of the convex portions 41 adjacent to the upper die 40 is the same as the pitch of the groove portions 52 adjacent to the lower die 50. The surface of the upper mold 40 and the lower mold 50 are heated to a temperature lower than the melting point of polyethylene of the sheath portion of the core-sheath type synthetic fiber by about 120 ° C. As shown in FIG. 10, The water-absorbent sheet 8 is sandwiched between the upper die 40 and the lower die 50. The upper die 40 and the lower die 50 are combined in such a manner that the convex portion 41 bites into the groove portion 52 and the convex portion 51 bites into the groove portion 42. However, some gaps remain between the top of the convex portion 41 of the upper mold 40 and the bottom surface of the groove portion 52 of the lower mold 50, and some gaps remain between the top of the convex portion 51 of the lower mold 50 and the bottom surface of the groove portion 42 of the upper mold 40. In this way, the upper die 40 and the lower die 50 are combined in a manner without mutual pressure. As a result, as shown in FIG. 10, the vertical ribs 6 a are formed by the convex portion 51 of the lower die 50, and the concave portions 6 c are formed by the convex portions 41 of the upper die 40. The water-absorbing sheet 8 is slightly pressurized by the concave portion 43 of the upper mold 40, and the above-mentioned lateral ribs 6b are formed by the concave portion 43 of (-29) -1231202 (26). Further, planes 44 and 44 extending in the longitudinal direction are formed on both sides of the upper die 40, and planes 53 and 53 extending in the longitudinal direction are also formed on both sides of the lower die 50. In addition, since the portions sandwiched by the planes 44 and 44 and the planes 53 and 53 do not pressurize the water-absorbent sheet 8, the flat portions 6f and 6f are formed. The upper mold 40 and the lower mold 50 are heated to a temperature slightly lower than the melting point of the composite synthetic fiber, and the upper mold 40 and the lower mold 50 are kept in a gap state to sandwich the water-absorbent sheet 8. Since the water-absorbing sheet 8 is formed by coupling the two molds with a gap between them at the above temperature, the liquid-acquiring layer 6 does not have a portion that melts the fibers and becomes a thin film. Does not impede liquid permeation. Since it is heated at a temperature at which the composite synthetic fiber is softened, the three-dimensional shape shown in Fig. 4 can be maintained after molding. The concave portion 6c of the liquid obtaining layer 6 is formed by pressing the convex portions 41 separated by short intervals in the longitudinal direction. Therefore, both the X direction and the Y direction are concentrated on the sheet that becomes the wall portion 6e of the concave portion 6c. Tensile stress. Therefore, the fiber space of the wall portion 6e forming the recessed portion 6c is pulled apart, and further cracks occur depending on the space. At this time, by forming the raised ribs 51 continuously in the longitudinal direction to press the longitudinal ribs 6a, the fiber density can be made higher at the top of the longitudinal ribs 6a, and the fiber density at the bottom 6d of the recessed portions 6c can also be increased. The fiber density at the top of the transverse rib 6b is lower than that of the wall portion 6e. When mass-producing the liquid obtaining layer 6, the upper mold 40-30- (27) 1231202 shown in Fig. 7 is formed on the surface of the roller so that the γ direction is the circumferential direction and the χ direction is the axial direction. The lower mold 50 shown in FIG. 8 is also formed on the surface of the roll so that the Υ direction is the circumferential direction and the X direction is the axial direction. The two rolls have a gap and are formed by supplying the water-absorbent sheet 8 therebetween. The liquid obtains layer 6. The manufacturing procedure of the sanitary napkin 1 is to overlap the surface sheet 3 and the liquid-permeable layer 5 to form the liquid-permeable holes 25 described above. Next, the longitudinal ribs 6a and the flat portions 6f, 6f of the liquid obtaining layer 6 are adhered to the back surface of the liquid-permeable layer 5 with a hot-melt adhesive. Next, the recessed portion 6 c of the liquid obtaining layer is adhered to the liquid absorbing layer 4 with a hot-melt adhesive. When the surface sheet 3, the liquid-permeable layer 5, the liquid-acquisition layer 6, and the liquid-absorbing layer 4 are overlapped, a compression groove 10 is formed. Then, the back sheet 2 is superimposed on the clothing-side surface of the liquid-absorbing layer 4, and then, on the skin-side surface, the liquid-impermeable sheet 30 is applied. Also, flat portions 6f and 6f extending in the longitudinal direction are formed on both sides of the liquid obtaining layer 6. The flat portions 6f and 6f are not drawn between the fibers like the wall portion 6e of the recessed portion 6c. On, it has a certain degree of rigidity, and has a uniform density. Therefore, in the assembling procedure of the sanitary napkin 1, for example, the flat portion 6f, 6f can be sucked on the suction conveyor belt to carry the liquid obtaining layer 6, and the suction conveyor belt can be maintained at the same level. The three-dimensional shape of the liquid obtaining layer is supplied to the liquid obtaining layer 6. The liquid obtaining layer 6 may be formed of one water-absorbent sheet 8 or may be formed by overlapping a plurality of water-absorbent sheets 8. FIG. 5 (B) shows an example in which two water-absorbent sheets 8A and 8B are stacked to form a liquid-31 · 1231202 (28) body to obtain layer 6. The two water-absorbent sheets 8A and 8B are each formed of the same material as the water-absorbent sheet 8 described above. When the liquid-acquisition layer 6 is formed into a three-dimensional shape, tension is applied to the wall portion 6e of the recessed portion 6c, so that the space between the fibers is pulled apart and cracks are formed depending on the place. However, when a plurality of water-absorbent sheets are overlapped and used, the above-mentioned wall portion 6e is different in a portion where the fiber density of each of the plurality of water-absorbent sheets is low or a portion where cracks occur is generated, so that the wall portion 6e is not different. Focus on one place. Therefore, it is possible to prevent a decrease in the overall strength of the wall portion 6e of the recessed portion 6c, and to improve the restorability of the three-dimensional shape after being pressed into a flat state by body pressure. In addition, a plurality of water-absorbent sheets may be used as a partial co-author. When the plurality of water-absorbent sheets contain thermoplastic fibers, the fibers can be adhered to each other by fusing the fibers therebetween. Alternatively, the water-absorbent sheet may be adhered with an adhesive. As shown in Figures 7 to 10, when the liquid-acquiring layer 6 is formed into a three-dimensional shape using a heated mold, the heat of the mold can be used to bond the absorbent sheet under a pressure that does not become a film. . Alternatively, the plurality of water-absorbent sheets may be heat-bonded at a predetermined point-shaped bonding portion, and then the liquid-acquiring layer 6 may be formed into a three-dimensional shape by using the laminated body of the heat-bonded absorbent sheet. When joining a plurality of absorbent sheets, the joining place may be any of the longitudinal ribs 6a, the transverse ribs 6b, the wall portion 6e of the recessed portion 6c, and the bottom portion 6d of the recessed portion. Alternatively, the joint space may be formed irregularly in all of the above. However, it is desirable that at least the wall portion 66 of the recessed portion 6c be used to bond the liquid-absorbent sheets to each other. -32- 1231202 (29) If the absorbent sheet is provided on the longitudinal ribs 6a and the lateral ribs 6b, the bone structure of the longitudinal ribs 6a and the lateral ribs 6b can be strengthened. As described above, since the fiber density is extremely low in the wall portion 6e of the recessed portion 6c, when the adhesive portion of the water-absorbent sheet is provided in this portion, the rigidity of the recessed portion 6c can be increased and the shape of the recessed portion 6c can be easily maintained. In addition, when a bonding portion is provided at the bottom portion 6d of the recessed portion 6c, the density of that portion can be increased. As a result, menstrual blood applied to the liquid obtaining layer 6 can be concentrated on the bottom portion 6d of the recessed portion 6c and then transferred to the liquid absorbing layer 4. Fig. 11 is a plan view of a physiological sanitary napkin 100 according to a second embodiment of the absorbent article of the present invention. In addition, the parts having the same structure as the embodiment shown in FIG. 1 are marked with the same symbols and detailed descriptions are omitted. The sanitary napkin 100 is a long form suitable for use in sleeping, and the longitudinal direction (Y direction) ) The overall length is approximately 200 to 450 mm. The edges la and lb on both sides are swollen from the horizontal reference line 〇χ-Οχ to gradually widen toward the trailing edge 1 d. Blocked behind the hips and the rear wings IB, 1B. On the side surface of the skin, there are formed long inner compression grooves 1 1 and 1 1. The front compression portions 11 and 11 of the inner compression portions 11 and 11 are convex arc-shaped curved patterns oriented toward the longitudinal centerline 〇 y-Ο y. The inner compression grooves 1 1 and 1 1 are formed with curved portions 11B and 11B at the front portion 1 1 A and 1 1 A, which widen the rear space relatively, and further, the rear portions HD and: I 1 D is gradually narrowed toward the trailing edge portion 1 d, and is connected to each other by connecting the compression grooves 1 3 A to the rear. -33- 1231202 (30) The area surrounded by the inner compression grooves 11 and 11 and the front connection compression grooves 12 and the connection groove 13A is the central area 20. The central area, which is sandwiched by the aforementioned front sections 11A and 11A, is mainly related to the central area 20A in front of the female mouth; the deformed section, IB, 1] is mainly opposed to the female perineum The middle part 20B; the part sandwiched by the rear part 1 ID and 1 1D is the main central area 20D behind the anus and gluteal groove. In addition, on the left and right outer sides of the inner compression grooves 1 1 and 1 1, the outer compression grooves on the left and right sides are the same as in FIG. 1. On the left side of 1 D and 1 1 D, rear outer compression grooves 17 and 17 are formed. The rear outer pressures 17 and 17 are connected to each other inside the rear edge portion 1 d. In this embodiment, the liquid-permeable layer 5 is formed in a band shape from the leading edge portion 1c to the portion Id, and a liquid-obtaining layer 6 having the same three-dimensional shape as shown in the figure is provided in the central region 20 described above. The central region 20 is formed in a long range of 120 to 3 50 m in the longitudinal direction from the front connecting compression groove 12 to the connecting compression groove 13A, and the above-mentioned liquid obtaining layer 6 is provided at least in the working area. The mouth facing portion is 20A in front of the central area. Alternatively, as shown at \, the above-mentioned liquid obtaining layer 6 may be disposed in the front center 20A to the middle center region 20B opposite to the perineum. [Embodiment] The following layers are formed in the opposite 20 areas opposite to the area A) '16 the rear edge of the right outer constriction groove [the fourth rear area m is the same as the area shown in I 1-34-1231202 (31) (0 surface Sheet 3 is a core-sheath type composite synthetic fiber (2.2 dtex, fiber length 44 mm) composed of polyethylene terephthalate containing titanium oxide at a ratio of 1.1% of fiber mass and polyethylene as a sheath. Air-through non-woven fabric with a basis weight of 25 g / m 2. In the following measurement, a width of 130 mm, a length of 200 mm, and a weight of 0.63 7 g are used. (B) The liquid-permeable layer 5 is made by using a core as a polymer. Air-laid nonwoven fabric (base weight 20 g / m 2) of core-sheath composite synthetic fibers (4.4 dtex, fiber length 50 mm) with eccentric cross-sections of polypropylene and sheaths made of polyethylene, with an average thickness of 1.75 mm and an average thickness of 1.75 mm. Those with a density of 0.0175 g / cm 3 were folded in three pieces. For the following measurements, a width of 100 mm, a length of 200 mm, and a weight of 0.4 1 5 g were used. (C) Liquid-permeable holes 25 The surface sheet 3 overlaps the liquid-permeable layer 5 with a roller having a pin of 100 t and a pin For a 70 t roller, the liquid sheet 25 is formed with a liquid perforation hole 25 penetrating the liquid pervious layer 5. The diameter of the opening of the liquid perforation hole 25 is 2 mni, the pitch is 5.5 mm in the γ direction, and 3 · 5 mm in the X direction -35 · 1231202 (32) (d) Liquid obtaining layer 6 contains: 60% by mass of chemical pulp; core-sheath composite synthesis of polyethylene terephthalate as the core and polyethylene as the sheath. Fiber (i.7dteX, fiber length 13 mm) occupies 26% by mass' Non-woven fabric (adhesive for air-moulding paper) with 14% by mass of adhesive for ethylene-vinyl acetate copolymer, 2 pieces of which have a basis weight of 40g / m 2 are overlapped The folder was used as the water-absorbent sheet 8. The following measurement was performed using a width of 50 mm, a length of 100 mm, and a weight of 0.205 g. In Comparative Example 1 of Table 1, the water-absorbent sheet 8 is not made to be three-dimensional. It is deformed and used directly as the liquid obtaining layer 6. In the dry state, the average thickness of the water-absorbent sheet 8 measured five times was 0.92 8 mm. The average density of the water-absorbent sheet 8 before three-dimensional molding was 0.0 7 5 g / cm 3, after the liquid obtaining layer 6 has a three-dimensional shape, the Y direction and X are measured. The tensile rupture strength when dried in the direction is 3.46N / 25 mm and 2.83N / 25 mm, respectively. The above-mentioned water-absorbing sheet 8 is three-dimensionally molded to obtain a liquid obtaining layer 6. The longitudinal ribs 6a of (hi) / 2 The width dimension at the height is 3 mm, the width dimension at the (h2) / 2 height of the cross rib 6b is 2.5 mm, and the opening area of the recess 6c at the (h2) / 2 height position is 15 mm2. However, Comparative Example 2 shown in Table 1 was used in Examples 1 to 8 to "change the relative gap between the upper die 40 and the lower die 50 above" in a dry state to make the liquid obtain layer 6 The thickness (hi of Fig. 6) varies. -36- 1231202 (33) In Comparative Example 2, since the above thickness is 1.192 mm, the space volume of the recessed portion 6c is {15χ (1 · 192-0 · 928)} = 3.96 mm 3. In the embodiment, the smallest thickness of the second embodiment is 8.61 mm 3, and the largest thickness of the eighth embodiment is 3 2 · 64 mm 3. That is, the volume of the recess in the embodiment is from 8.361 to 32.64 m 3. (e) Liquid absorbing layer 4: 8 g of chemical pulp and 1.5 g of water-absorbing polymer are uniformly mixed, and covered with 15 g / m 2 of fiber paper to a width of 70 mm, a length of 200 mm, and a density of 0.069 g / cm 3 The laminated body is used as the liquid absorbing layer 4. (1) Thickness measurement Thickness measurement at the time of drying after being pressurized and in the wet state is measured using UF-60A manufactured by Daiei Scientific Precision Manufacturing Co., Ltd. (2) Dripping property test The liquid obtaining layers 6 of Comparative Examples 1 to 8 in Table 1 were fixed to the beaker openings having a volume of 50 m 1. The artificial menstrual blood was continuously dripped at a flow rate of 3 m 1 / m in using an automatic burette from the liquid-obtaining layer 6 5 m above the center. Measure the time (in seconds) from the beginning of the drop until the liquid first drips into the beaker. Here, artificial menstrual blood is obtained by adding 300 g of glycerin, 30 g of sodium salt of carboxymethyl cellulose (CMC), and 40 g of sodium chloride to 4 liters of ion-exchanged water. use. -37- 1231202 (34) (3) Pressurized absorption test, as shown in Figure 12 (B), on a flat test bench 61, the liquid absorbing layer 4, the liquid obtaining layer 6, the liquid permeable layer 5 and the surface The sheets 3 made into one body are overlapped in order. An acrylic plate 62 having a size as shown in FIG. 12 (A) is provided at the uppermost part so that the opening portion 62a is aligned with the center. In addition, 900 g of loads 63 and 63 are carried before and after the opening portion 62a, respectively. The acrylic plate itself has a weight of ii5g. The artificial menstrual blood was supplied using an automatic burette in the opening 6 2 a at a flow rate of 9 5 m 1 / mi η, and the i-th supply was 3 m 1. The measurement was from the start of the supply of liquid to the opening. Time of liquid disappearance on the surface of sheet 3 of 6 2 a (seconds). After 30 seconds have elapsed since the liquid on the surface sheet 3 disappeared for the first time, 4 m 1 was applied as the second time, and the permeation time was measured similarly. After the second time the liquid disappeared from the surface of the surface sheet 3, 5 minutes later, a liquid of 3 m 1 was applied as the third time, and the permeation time was measured in the same manner. After the liquid supplied for the third time disappeared from the surface of the surface sheet 3, one minute later, the acrylic plate 62 and the loads 63 and 63 were removed, and the thicknesses of the respective liquid obtaining layers 6 were measured. In addition, (the thickness after pressing / thickness after drying) X 100 (%) was used as the thickness change rate to calculate. The measurement results are shown in Table 1 below. • 38- 1231202

比較例 1 比較例 2 比較例 1 比較例 2 比較例 3 比較例 4 溫度(上下） 無處理 80 120 80 80 80 壓花處理後之厚度 (乾)n=5平均 0.928 1.129 2.548 1.502 1.678 2.018 滴落性試驗 (秒） 33.0 16.7 13.0 14.0 11.7 13.3 加壓吸收試驗 3 ml 5.57 6.59 4.43 6.07 5.22 4.49 5分鐘放置一 4ml 12.37 13.36 6.82 10.45 10.17 9.34 3ml 15.69 15.52 7.04 11.21 12.59 11.86 合計時間 (秒） 33.63 35.48 18.29 27.72 27.98 25.69 加壓吸收試驗後獲得 層厚度 0.80 0.85 2.15 1.20 1.35 1.47 厚度變化率(％) 86.21 71.31 84.38 79.89 80.45 72.84Comparative example 1 Comparative example 2 Comparative example 1 Comparative example 2 Comparative example 3 Comparative example 4 Temperature (up and down) No treatment 80 120 80 80 80 Thickness after embossing treatment (dry) n = 5 average 0.928 1.129 2.548 1.502 1.678 2.018 dripping Sexuality test (seconds) 33.0 16.7 13.0 14.0 11.7 13.3 Pressure absorption test 3 ml 5.57 6.59 4.43 6.07 5.22 4.49 5 minutes left 4ml 12.37 13.36 6.82 10.45 10.17 9.34 3ml 15.69 15.52 7.04 11.21 12.59 11.86 Total time (seconds) 33.63 35.48 18.29 27.72 27.98 25.69 Layer thickness obtained after pressure absorption test 0.80 0.85 2.15 1.20 1.35 1.47 Thickness change rate (%) 86.21 71.31 84.38 79.89 80.45 72.84

-39- (36) 1231202 (接續上表） 比較例5 比較例6 比較例7 比較例8 _ 60 80 100 80 2.454 2.404 2.580 3.104 一 14.0 16.7 15.0 19.0 4.64 4.43 4.40 4.27 一 10.12 8.14 8.63 8.69 12.24 10.21 9.65 9.28 2 7.00 22.78 22.68 22.24 1.38 1.58 1.60 1.54 56.23 65.72 62.02 49.61 一-39- (36) 1231202 (continued from the above table) Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 _ 60 80 100 80 2.454 2.404 2.580 3.104-14.0 16.7 15.0 19.0 4.64 4.43 4.40 4.27-10.12 8.14 8.63 8.69 12.24 10.21 9.65 9.28 2 7.00 22.78 22.68 22.24 1.38 1.58 1.60 1.54 56.23 65.72 62.02 49.61 a

從表1，可以確認在各實施例，具有良好的滴落性' 以及在加壓吸水性試驗下的透液性。 又，上述實施形態中，雖是於表面薄片3下方存在有 液體引導層5，然後在其下方設置液體獲得層6，不過使 · 上述液體獲得層6直接存在於上述表面薄片3之下方亦可 〔發明之效果〕 如以上般，於本發明中’當一時性有多量的液體被施 予時，可以將之保持在表面薄片之下’然後再立即讓液體 吸收層吸收，所以可以防止表面薄片上的液體殘留。 -40- 1231202 (37) .【圖式簡單說明】 第1圖，是本發明之吸收性物品之實施形態之生理用 衛生棉的平面圖。 第2圖，是第1圖所示之生理用衛生棉被裝著於內褲 胯下布之狀態下，以橫向方向之Π-ΙΙ基準線切斷後，從 箭頭方向所觀察的斷面圖。 第3圖，是透液孔之開孔狀態以及液體獲得層的放大 斷面圖。 第4圖，是液體獲得層的立體圖。 第5圖，是第4圖之V-V線的斷面圖。 第6圖，是第4圖之VI-VI線的斷面圖。 第7圖，是用以使液體獲得層成爲立體形狀之上模的 立體圖。 第8圖，是用以使液體獲得層成爲立體形狀之下模的 立體圖。 第9圖，是第7圖之IX-IX線的斷面圖。 第1 〇圖，是顯示以上模及下模將液體獲得層予以立 體成型之狀態下的斷面圖。 第1 1圖，是作爲本發明第2實施形態之吸收性物品 之縱長生理用衛生棉的平面圖。 第1 2圖（A )爲在加壓吸收試驗所使用之壓克力板 的平面圖，（B )爲說明上述加壓吸收測試的斷面圖。 〔符號說明〕 -41 - 1231202 (38) 1 :生理用衛生棉 2 :背面薄片 3 :表面薄片 4 :液體吸收層 5 :透液層 6 :液體獲得層 6a :縱肋From Table 1, it can be confirmed that in each Example, it has good dripping property 'and liquid permeability in a pressure-absorbing water absorption test. In the above-mentioned embodiment, although the liquid guide layer 5 exists under the surface sheet 3, and then the liquid obtaining layer 6 is provided below it, the liquid obtaining layer 6 may be directly below the surface sheet 3 [Effects of the Invention] As described above, in the present invention, "when a large amount of liquid is administered temporarily, it can be kept under the surface sheet" and then absorbed by the liquid absorbing layer immediately, so the surface sheet can be prevented. Residue on the liquid. -40- 1231202 (37). [Brief description of the drawings] Fig. 1 is a plan view of a sanitary napkin for use in an embodiment of the absorbent article of the present invention. Fig. 2 is a cross-sectional view of the sanitary napkin shown in Fig. 1 as viewed from the direction of the arrow, after being cut with the Π-II reference line in the lateral direction in a state where the sanitary napkin is placed under a cloth. Fig. 3 is an enlarged sectional view of the opening state of the liquid-permeable pores and the liquid obtaining layer. Fig. 4 is a perspective view of a liquid obtaining layer. Fig. 5 is a sectional view taken along the line V-V in Fig. 4; Fig. 6 is a sectional view taken along the line VI-VI in Fig. 4; Fig. 7 is a perspective view of the upper mold for making the liquid obtaining layer into a three-dimensional shape. Fig. 8 is a perspective view showing the liquid-acquiring layer as a three-dimensional lower mold. Fig. 9 is a sectional view taken along the line IX-IX in Fig. 7; Fig. 10 is a cross-sectional view showing a state where the liquid obtaining layer is formed into a solid by the upper mold and the lower mold. Fig. 11 is a plan view of a longitudinal sanitary napkin as an absorbent article according to a second embodiment of the present invention. Fig. 12 (A) is a plan view of an acrylic plate used in the pressure absorption test, and (B) is a sectional view illustrating the pressure absorption test. [Description of Symbols] -41-1231202 (38) 1: sanitary napkin 2: back sheet 3: surface sheet 4: liquid absorbing layer 5: liquid permeable layer 6: liquid obtaining layer 6a: longitudinal ribs

6b :橫肋 6c :凹部 6d :底部 1 〇 :壓縮溝 1 1 :內側壓縮溝 2 0 :中央區域 25 :透液孔 -42-6b: transverse rib 6c: recessed portion 6d: bottom 1 〇: compression groove 11: inner compression groove 2 0: central area 25: liquid-permeable hole -42-

Claims (1)

(1) 1231202 拾、申請專利範圍 1 · 一種具有液體獲得層之吸收性物品，是針對於具 備有：位於肌膚側表面之透液性表面薄片、及位於衣著側 表面之背面薄片、以及位於上述表面薄片與上述背面薄片 之間的液體吸收層之吸收性物品，其特徵爲： 上述液體吸收層於朝向上述表面薄片之表面設有液體 獲得層，上述液體獲得層，其吸水性薄片，是朝向該厚度 方向保有立體形狀變形之狀態者； 該立體形狀，是形成有朝向上述表面薄片以凸狀且延 伸於縱向方向呈相互平行之縱肋，同時形成有朝向上述表 面薄片以凸狀且延伸於橫向方向之橫肋，該橫肋爲於縱向 方向隔開以間隔以聯繫於上述縱肋之間之方式所形成，由 上述縱肋與橫肋所圍之多數的凹部爲朝向上述液體吸收層 凹窪而形成； 至少使上述縱肋，乃接抵於上述表面薄片、或是接抵 於位在表面薄片之下之透液層，上述凹部之底部爲接抵於 上述液體吸收層。 2. 如申請專利範圍第1項之具有液體獲得層之吸收 性物品，其中從上述凹部之底部至上述橫肋之頂部爲止之 高度尺寸，是比從上述凹部之底部至上述縱肋之頂部爲止 之高度尺寸還要低。 3. 如申請專利範圍第1或2項之具有液體獲得層之 吸收性物品，其中各別之上述凹部，爲縱向方向的長度尺 寸比橫向方向的寬幅尺寸還要長條縱長。 -43- (2) 1231202 4·如申請專利範圍第1或2項之具有液體獲得層之 吸收性物品，其中1個凹部之空間容積爲8〜80mm3。 5.如申請專利範圍第1或2項之具有液體獲得層之 吸收性物品，其中上述液體獲得層，藉由讓上述吸水性薄 片呈立體變形時之拉伸應力集中，使纖維間的間隔被拉開 (拉寬）而產生低密度之部分。 6·如申請專利範圍第1或2項之具有液體獲得層之 吸收性物品，其中上述液體獲得層，於縱向方向連續形成 有寬幅比上述縱肋還寬之平坦部。 7.如申請專利範圍第1或2項之具有液體獲得層之 吸收性物品，其中上述液體獲得層，係使複數片的上述吸 水性薄片重疊，使該複數片的上述吸水性薄片一起製成立 體形狀者。 8 ·如申請專利範圍第1或2項之具有液體獲得層之吸 收性物品，其中將乾燥狀態之上述液體獲得層朝向縱向方 向拉伸（拉張）時之拉伸破裂強度爲每25mm寬幅爲2.5N 以上。 -44-(1) 1231202 Pickup, patent application scope 1 · An absorbent article having a liquid-acquiring layer is provided with: a liquid-permeable surface sheet on the skin-side surface, a back sheet on the garment-side surface, and the above-mentioned The absorbent article of the liquid absorbing layer between the surface sheet and the back sheet is characterized in that: the liquid absorbing layer is provided with a liquid obtaining layer on a surface facing the surface sheet, and the liquid obtaining layer and the water absorbing sheet are oriented The thickness direction has a deformed three-dimensional shape. The three-dimensional shape is formed with longitudinal ribs that are convex toward the surface sheet and extend parallel to the longitudinal direction, and are formed with convex and extending toward the surface sheet. The horizontal ribs are formed in a manner to be spaced apart from each other in the longitudinal direction so as to be connected between the vertical ribs. A plurality of recesses surrounded by the vertical ribs and the horizontal ribs are recessed toward the liquid-absorbing layer. It is formed by depression; at least the longitudinal ribs are abutted on the surface sheet, or abutted on a thin surface. Beneath the liquid-permeable layer, a bottom of the concave portion is brought into contact to the liquid absorbing layer. 2. For an absorbent article with a liquid-acquisition layer as described in item 1 of the scope of patent application, the height dimension from the bottom of the recess to the top of the horizontal rib is greater than the height from the bottom of the recess to the top of the vertical rib. The height dimension is even lower. 3. For an absorbent article with a liquid-acquisition layer in the scope of patent application No. 1 or 2, each of the aforementioned recesses has a length in the longitudinal direction which is longer than the width in the transverse direction. -43- (2) 1231202 4. If the absorbent article with a liquid-receiving layer is in the scope of patent application No. 1 or 2, the space volume of one recess is 8 to 80 mm3. 5. The absorbent article having a liquid-acquiring layer as described in claim 1 or 2, wherein the liquid-acquiring layer concentrates the tensile stress when the water-absorbing sheet is three-dimensionally deformed, so that the space between the fibers is adjusted. Pull apart (widening) to produce a low-density portion. 6. The absorbent article having a liquid-obtaining layer according to item 1 or 2 of the patent application scope, wherein the liquid-obtaining layer has a flat portion having a wider width than the longitudinal ribs continuously in the longitudinal direction. 7. The absorbent article having a liquid-obtaining layer according to item 1 or 2 of the patent application scope, wherein the liquid-obtaining layer is made by overlapping a plurality of the above-mentioned water-absorbent sheets and making the plurality of the above-mentioned water-absorptive sheets together Three-dimensional shape person. 8 · If the absorbent article with a liquid-acquiring layer as described in item 1 or 2 of the patent application scope, wherein the tensile rupture strength when the liquid-acquiring layer in the dry state is stretched (stretched) in the longitudinal direction is 25 mm wide It is 2.5N or more. -44-
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