CN109106513A - A kind of composite absorption core - Google Patents

A kind of composite absorption core Download PDF

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Publication number
CN109106513A
CN109106513A CN201810670035.4A CN201810670035A CN109106513A CN 109106513 A CN109106513 A CN 109106513A CN 201810670035 A CN201810670035 A CN 201810670035A CN 109106513 A CN109106513 A CN 109106513A
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China
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area
high molecular
molecular material
core
fiber
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Granted
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CN201810670035.4A
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CN109106513B (en
Inventor
徐毅
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Burghardt (shanghai) Electric Equipment Co Ltd
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Burghardt (shanghai) Electric Equipment Co Ltd
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—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
    • A61F13/535—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 inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
    • 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
    • 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
    • A61F13/538—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 characterised by specific fibre orientation or weave
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
    • 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
    • A61F2013/530131—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 being made in fibre but being not pulp
    • 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
    • A61F2013/530481—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 superabsorbent materials, i.e. highly absorbent polymer gel materials
    • 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
    • A61F13/538—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 characterised by specific fibre orientation or weave
    • A61F2013/5383—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 characterised by specific fibre orientation or weave by the fibre orientation in the x-y plane
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
    • A61F2013/5395—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 characterised by the connection of the absorbent layers with each other or with the outer layers with thermoplastic agent, i.e. softened by heat

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)
  • Absorbent Articles And Supports Therefor (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The invention discloses a kind of composite absorption cores, including the first liquid absorbent material, loft non-woven cloth material and the second liquid absorbent material, being adhesively fixed between first liquid absorbent material and loft non-woven cloth material has the first high molecular material, and being adhesively fixed between loft non-woven cloth material and the second liquid absorbent material has the second high molecular material；The length and width of first high molecular material, which is respectively smaller than, to be equal to, less than the length and width of the second high molecular material, and the width of the second high molecular material is less than the width of loft non-woven cloth material；First high molecular material and the second high molecular material form absorbent body functional areas, on the outside at least provided with the first fixed area of not set high molecular material.Present invention reduces SAP front and back core or so surrounding leakage probability, and after multiple imbibition, can be avoided high molecular material, expansion is gathered in sprawling in the left and right sides, mitigates because volume expansion is constriction caused by infant's thigh root and crotch, promotion snugness of fit.

Description

A kind of composite absorption core
Technical field
The invention belongs to disposable sanitary articles manufacturing equipment technical field more particularly to sanitary napkin, paper diaper, La La A kind of fields such as trousers, sweat pants, and in particular to composite absorption core.
Background technique
Disposable sanitary articles slimming has become a kind of trend, and thinning absorptive core is an important way being thinned Diameter.The ultra-thin composite absorption core without Time of Fluff Slurry currently on the market, what is generallyd use is free from Time of Fluff Slurry composite absorbent core Body, this composite absorption core are generally made of upper layer dust-free paper, middle layer loft non-woven cloth, lower layer's dust-free paper, and upper Layer dust-free paper and middle layer loft non-woven cloth between be provided with one layer of polymeric absorbent resin particle (hereinafter referred to as macromolecule, also It is represented by SAP), other one layer of macromolecule is provided between lower layer's dust-free paper and middle layer loft non-woven cloth, upper and lower layer is dustless Paper material is also possible to nonwoven cloth material, and above-mentioned each material layer is bonded by hot melt adhesive bonding, heat bonding, ultrasonic bonds etc. Technique is carried out compound and then is fabricated by cutting, winding.But this composite absorption core, belong to offline laminating production, After having produced, disposable sanitary articles could be manufactured into using the processes such as uncoiling, compound, cutting, due to compound after cutting Absorptive core, high molecular material and upper and lower dust-free paper material layer and intermediate loft non-woven layer of cloth, each material structure level Breadth is identical, and in disposable sanitary articles manufacturing process, the macromolecule of composite absorption core two sides often has leakage.In addition, High molecular material is that continuous uniform is distributed in composite absorption core structure, by rotor cut off operation, rotor is frequent Polymeric particles can be switched to, the service life on the one hand influencing cutting effect, reducing rotor, on the other hand, in cutting-off process, It will also result in the leakage of high molecular material, virtually cause the waste of high molecular material, reduce composite absorption core utilization rate.
Using disposable sanitary articles made of existing composite absorption core structure, by taking baby diaper as an example, macromolecule is past Toward being that continuous uniform is distributed in composite absorption core structure, due to intermediate loft non-woven layer of cloth characteristic, high molecular material is inhaled After liquid, even inflation is especially having the case where body worn pressure among loft non-woven cloth, but after repeatedly absorbing urine Under, the expansion space after high molecular material imbibition is limited, and high molecular material can be held to the two sides all around of composite absorption core Inflationary spiral is spread along back and forth or left and right two sides in mouth region domain, if composite absorption core clad package is loosely, easily causes out Macromolecule leakage after the imbibition of mouth region；In addition, position at left and right sides of composite absorption core, often close to the thigh root of infant And crotch region, it is influenced by the sprawling inflationary spiral of two sides macromolecule, is oppressed caused by infant's thigh root and crotch region Sense, certainly will influence snugness of fit.In addition to this, existing middle layer loft non-woven cloth structure and performance are empty there is also being promoted Between, especially in terms of fluffy degree, fiber orientation degree and fiber absorbent.
Summary of the invention
The shortcomings that for the above-mentioned prior art or deficiency, the technical problem to be solved in the present invention is to provide a kind of composite absorptions Core is designed by reasonable structure, can reduce letting out for SAP surrounding all around in composite absorption core to greatest extent Leak probability, and the composite absorption core is after multiple imbibition, can be avoided high molecular material gather in left and right sides sprawling it is swollen It is swollen, mitigate as volume expansion constriction caused by infant's thigh root and crotch region, promotes thigh root and crotch Snugness of fit, also, promote compound core body with absorbent by optimizing middle layer loft non-woven cloth structure and integrally inhale Receive performance.
In order to solve the above technical problems, the present invention has following constitute:
A kind of composite absorption core, including the first liquid absorbent material, the loft non-woven cloth material set gradually from top to bottom And second liquid absorbent material, being adhesively fixed between first liquid absorbent material and loft non-woven cloth material has the first macromolecule Material, being adhesively fixed between the loft non-woven cloth material and the second liquid absorbent material has the second high molecular material；Described By the first fixed glue bond between one high molecular material and the first liquid absorbent material, second high molecular material and second is inhaled By the second fixed glue bond between liquid barrier material；Wherein, it is high to be less than or equal to described second for the length of first high molecular material The length of molecular material, the width of first high molecular material are less than the width of second high molecular material, and described second The width of high molecular material is less than the width of the loft non-woven cloth material；First high molecular material of the composite absorption core Absorbent body functional areas A is formed with the second high molecular material, in the outside of the absorbent body functional areas A, at least provided with the One fixed area C, wherein the not set high molecular material of the first fixed area C.Wherein, the high molecular material includes first High molecular material and the second high molecular material.
The loft non-woven cloth material be using containing in polypropylene, polyethylene, polyethylene terephthalate at least Two kinds at the core-sheath compound fibre that is grouped as and Three-dimensional crimped hollow type dacron fibre, by shredding, Mixing, combing, hot wind penetrate staple fiber hot-wind nonwoven cloth made of consolidation.
The loft non-woven cloth material includes at least top fiber net and lowermost fibre net, wherein indulges in top fiber net The transverse fiber degree of orientation arranges ratio and is less than in lowermost fibre net vertically and horizontally fiber orientation degree arrangement ratio, and in top fiber net Fiber the fiber in lowermost fibre net is less than to the hydrophilic ability of saline fluid to the hydrophilic ability of saline fluid. The physiological saline refers to that mass fraction is 0.9% physiological saline, it is generally the case that artificial urine uses 0.9% physiological saline It simulates, physiological saline described below all refers to 0.9% physiological saline)
The loft non-woven cloth material include at least top fiber net, mean fiber net and lowermost fibre net, it is described on Fiber between layer web and mean fiber net forms the first semiclosed hole, mean fiber net and lowermost fibre net from top to bottom Between fiber form the second semiclosed hole from top to bottom, wherein the first semiclosed hole is connected to setting with the second semiclosed hole；Institute The partial size that hole between the fiber in mean fiber net is less than high molecular material is stated, aperture is less than 100um between fiber, fine It ties up fineness and is less than or equal to 2Td, in this manner it is ensured that the first high molecular material is concentrated mainly in top fiber net, the second high score Sub- material is concentrated mainly in lowermost fibre net, so that two layers of high molecular material boundary layered becomes apparent from, is substantially reduced The occurrence of first high molecular material and the second high molecular material mix, especially for the first high molecular material and second When high molecular material has different absorbent properties, advantageously using such loft non-woven cloth structure.
Vertically and horizontally fiber orientation degree arrangement ratio is respectively less than middle layer web in the top fiber net, lowermost fibre net In vertically and horizontally fiber orientation degree arrange ratio, and to be less than middle layer to the hydrophilic ability of physiological saline fine for the fiber in top fiber net Net, the fiber in lowermost fibre net are tieed up to the hydrophilic ability of physiological saline.
The fiber in web is greater than 60 ° to the contact angle of physiological saline and is less than the loft non-woven cloth at the middle and upper levels 90 °, the fiber in lowermost fibre net or mean fiber net is greater than 0 ° to the contact angle of physiological saline and less than 60 °.Ordinary circumstance Under, if the contact angle of fiber and physiological saline less than 90 °, fiber surface be it is hydrophilic, i.e., physiological saline is easier to pass through, Contact angle is smaller, indicates that the hydrophilic ability of fiber surface is stronger；If the contact angle of fiber and physiological saline is greater than 90 °, fiber table Face is hydrophobic.
The Three-dimensional crimped hollow type dacron fibre has hydrophily, and fiber content accounts for fluffy nothing Woven fabric material total fiber content ratio is in 5-20%, and the three-dimensional crimp in the top fiber net in the loft non-woven cloth material The content of hollow type dacron fibre is greater than Three-dimensional crimped hollow poly terephthalic acid second in lowermost fibre net The content of two ester fibers.Wherein, Three-dimensional crimped hollow type poly terephthalic acid is free of in the loft non-woven cloth mean fiber net Two ester fiber of second.
First high molecular material/second high molecular material is the macromolecule material by single specification or at least two specifications Material mixes, and the first high molecular material and the second high molecular material can select identical absorbent properties or different absorbabilities Can material, when the first high molecular material and the second high molecular material select the material of different absorbent properties, it is preferable that choosing First high molecular material returns infiltration, high diffusivity ability with low, can quickly be diffused liquid, keeps composite absorbent core Surface layer it is dry-ness；The second high molecular material selected has fast penetrating power, can absorb liquid etc. to greatest extent.
The width E of first high molecular material1With the width E of second high molecular material2Ratio E1/E2Meet, 1/2 < E1/E2< 1.
The width ratio E of first high molecular material and second high molecular material1/E2It is 4/5.
The composite absorption core further includes the second fixed area B, the outside of the absorbent body functional areas A is arranged in, And its not set high molecular material, wherein the high molecular material includes the first high molecular material and the second high molecular material.
The composite absorption core successively has the first macromolecule distributed area S along the direction MD1、S1', the second macromolecule distribution Area S2, S2' and third macromolecule distributed area S3, S3', wherein every Gram Mass of the high molecular material in above-mentioned distributed area is full Foot: MS2> MS1> MS3；MS2’> MS1’=MS3’。
The composite absorption core successively has F along the direction MD0Area, first absorb 1 area S of diffusion12, the first core uptake zone S3-7, first absorb diffusion 2 area S61And B0Area, wherein F0Area and B0Area is spacer region, and the content of high molecular material is 0g； Wherein, high molecular material meets in the content of above-mentioned zone: MS3-7> MS61> MS12。
First core uptake zone S3-7Along the direction MD successively there is the first core to absorb 1 area S36, the first essential core inhale Receive area S710And first core absorb 2 area S107, wherein high molecular material meets in the content of above-mentioned zone: MS710> MS36= MS107.To sum up gained, MS3-7> MS710> MS61> MS36=MS107> MS12, wherein MS3-7=MS36+MS710+MS107。
Described first absorbs 1 area S of diffusion12Including at least one region, first core absorbs 1 area S36Including at least One region, first essential core uptake zone S710Including at least one region, first core absorbs 2 area S107Including At least one region, described first absorbs 2 area S of diffusion61Including at least one region, wherein described first absorbs 1st area of diffusion S121 area S is absorbed with the first core36Region constitutes the first macromolecule distributed area S1, first essential core uptake zone S710It constitutes Second macromolecule distributed area S2, 2 area S of the first core absorption1072 area S of diffusion are absorbed with first61Constitute third macromolecule point Cloth area S3。
The composite absorption core successively has F along the direction MD0Area, second absorb 1 area S of diffusion14, the second core uptake zone S5-5, second absorb diffusion 2 area S41And B0Area, wherein F0Area and B0Area is spacer region, and the content of high molecular material is 0g； Wherein, high molecular material meets in the content of above-mentioned zone: MS5-5> MS41=MS14。
Second core uptake zone S5-5Along the direction MD successively there is the second core to absorb 1 area S58, the second essential core inhale Receive area S99And second core absorb 2 area S85, wherein high molecular material meets in the content of above-mentioned zone: MS99> MS58= MS85.To sum up gained, MS5-5> MS99> MS58=MS85> MS41=MS14, wherein MS5-5=MS58+MS99+MS85。
Described second absorbs 1 area S of diffusion14Including at least one region, second core absorbs 1 area S58Including at least One region, second essential core uptake zone S99Including at least one region, second core absorbs 2 area S85Including At least one region, described second absorbs 2 area S of diffusion41Including at least one region, wherein described second absorbs 1st area of diffusion S141 area S is absorbed with the second core58Constitute the first macromolecule distributed area S1', second essential core uptake zone S99Constitute the Two macromolecule distributed area S2', second core absorbs 2 area S852 area S of diffusion are absorbed with second41Constitute the distribution of third macromolecule Area S3’。
Wherein, high molecular material also meets in the content of above-mentioned zone: high molecular material is in the first core uptake zone S3-7's Content and its in the second core uptake zone S5-5Content it is identical, that is, MS3-7=MS5-5。
It is additionally provided with the diversion trench being made of the heat-sealing bonding portion of several discrete distributions in the main functionality uptake zone area A, The return guide trough is at liquid guide flow area, wherein the liquid guide flow area is free of high molecular material.
The diversion trench is symmetrically arranged linear type, broken line type or arc line type structure, and when specific implementation is without being limited thereto, tool Body setting can according to the actual situation depending on.
For the absorbent body functional areas A by the compound fixation of hot melt adhesive, the second fixed area B and the first fixed area C are logical Cross the compound fixation of heat-sealing bonding part.
It further includes further the second heat-sealing bonding portion that the heat-sealing bonding portion, which includes at least the first heat-sealing bonding portion, In, first heat-sealing bonding portion/second heat-sealing bonding portion combines structure by the lines of continuous waveform lines and/or interruption setting At.
First heat-sealing bonding portion includes the first main body heat-sealing bonding corresponding with absorbent body functional areas a-quadrant Portion and the first auxiliary heat-sealing bonding portion, the length in the first main body heat-sealing bonding portion are the first heat-sealing bonding minister's degree 1/2-2/3, the heat seal strength in the first main body heat-sealing bonding portion is greater than the heat seal strength in auxiliary heat-sealing bonding portion.
Shortest distance W between two the first main body heat-sealing bonding portions1For the 70%- of the compound core body width W 85%, two described first shortest distance W assisted between heat-sealing bonding portions2For the 80%- of the compound core body width W 90%, i.e. three meets W1<W2<W。
The width of first heat-sealing bonding portion in the cd direction is 2-10mm, and second heat-sealing bonding portion is in the direction MD On length be 10-120mm.
Compared with prior art, the present invention has the following technical effect that
Width in the present invention due to the width of the first high molecular material less than the second high molecular material and close to baby children The setting content of the high molecular material in youngster's thigh root region is less, after above-mentioned high molecular material imbibition, composite absorption core The expansion upheaval for showing dome-shaped, avoid high molecular material left and right sides sprawling gather expansion and to infant's thigh Constriction caused by root and crotch region improves the snugness of fit of thigh root and crotch；
The first fixed area C and the second fixed area B in the present invention without high molecular material pass through the first heat-sealing bonding respectively Portion and/or the second heat-sealing bonding portion are fixed, and the surrounding of the left and right of composite absorption core, front and back is passed through middle layer loft non-woven cloth In meldable fibre occur it is melt bonded be adhesively fixed, SAP can be reduced in composite absorption core to greatest extent on a left side The leakage probability of right, front and back surrounding；Further, since being provided with the first heat-sealing bonding portion, that is, flow liquid into composite absorbent core , also can be along the first heat-sealing bonding portion when body left and right sides, water conservancy diversion is spread forward and backward, avoids product side leakage；
The length of the first high molecular material is less than or equal to the length of the second high molecular material, the first macromolecule material in the present invention The width of material can be light by way of being interrupted or continuously applying high molecular material less than the width of the second high molecular material So that each position before and after composite absorption core is designed reasonable macromolecule grammes per square metre value according to imbibition ability demand power, realizes compound The 3D design effect of absorptive core；Grammes per square metre of the high molecular material on composite absorption core is avoided by the way of quantitatively applying The waste of high molecular material dosage on entire absorptive core, largely saves the dosage of high molecular material；
The fiber in loft non-woven cloth top fiber net used in the present invention to the contact angle of physiological saline be greater than 60 ° and Less than 90 °, then top fiber netlist reveals slightly water-wet, and the fiber in lowermost fibre net or mean fiber net is to physiological saline Contact angle is greater than 0 ° and less than 60 °, then lowermost fibre netlist reveals strongly hydrophilic, since vertically and horizontally fiber takes in top fiber net It is less than in lowermost fibre net vertically and horizontally fiber orientation degree arrangement ratio to degree arrangement ratio.Liquid is shown to expand in top fiber net It dissipates length and is less than lowermost fibre net diffusion length, it is poor to form hydrophilic power gradient between upper and lower level web, and it is fast to be conducive to liquid Speed infiltrates into lowermost fibre net, and liquid is along lowermost fibre net longitudinal diffusion.In addition, even if the first high molecular material and second High molecular material absorbent properties having the same and identical Gram Mass, due to Three-dimensional crimped hollow in top fiber net Type dacron fibre content is greater than Three-dimensional crimped hollow type polyethylene terephthalate in lowermost fibre net Fiber content, such top fiber net fluffy degree is more fluffy than lowermost fibre net, and accommodating high molecular material expansion space can be more Greatly, avoid top fiber network capacity receive high molecular material occur " gel blockage " phenomenon, be more advantageous to liquid to lower layer transmit expand It dissipates.If the first high molecular material Gram Mass is less than the second high molecular material Gram Mass, or, the first high molecular material Infiltration, high diffusivity ability are returned with low, the second high molecular material has quick penetrating power, then said effect can become apparent from；
Since first or second core uptake zone is often close to Human Physiology discharge area, gram of high molecular material in the present invention Weight comparision contents are high, and after repeatedly absorbing liquid, diffusivity is not good enough, and diversion trench is arranged inside composite absorbent core body and avoids liquid Body transition is gathered in the first or second essential core uptake zone, after solving multiple imbibition, returns and seeps the problems such as bad, from basic On improve the infiltration rate of composite absorption core and the dry and comfortable degree on surface.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other Feature, objects and advantages will become more apparent upon:
Fig. 1: the structural schematic diagram of composite absorption core of the present invention in the cd direction；
Fig. 2: composite absorption core of the present invention 3D status diagram after heat sealing adhesive in the cd direction；
Fig. 3: the product and its height that the interruption of the second high molecular material of composite absorption core of the present invention in the MD direction applies Molecule hierarchical diagram；
Fig. 4: the product continuously applied and its macromolecule point of the second high molecular material of composite absorption core in the MD direction Layer schematic diagram；
Fig. 5: high score sublayering determines area distribution schematic diagram (CD cross-wise direction) in the present invention；
Fig. 6: composite absorption core loft non-woven cloth two layer web structural schematic diagram of the present invention；
Fig. 7: the fiber distribution schematic diagram of the top fiber net of structure as shown in Figure 6；
Fig. 8: the fiber distribution schematic diagram of the lowermost fibre net of structure as shown in Figure 6；
Fig. 9 :-three layers of fiber net structure schematic diagram of composite absorption core loft non-woven cloth of the present invention；
Figure 10: it is suitable for the macromolecule height grammes per square metre distribution curve schematic diagram that boy uses in the present invention；
Figure 11: it is suitable for the macromolecule grammes per square metre style distribution map that boy uses in the present invention；
Figure 12: it is suitable for the macromolecule height grammes per square metre distribution curve schematic diagram that girl uses in the present invention；
Figure 13: it is suitable for the macromolecule grammes per square metre style distribution map that girl uses in the present invention；
Figure 14: composite absorption core structural schematic diagram one of the present invention with diversion trench；
Figure 15: composite absorption core structural schematic diagram two of the present invention with diversion trench；
Figure 16: the structural schematic diagram one of diversion trench in the present invention；
Figure 17: the structural schematic diagram two of diversion trench in the present invention；
Figure 18: the structural schematic diagram three of diversion trench in the present invention.
Specific embodiment
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with It is fully understood from the purpose of the present invention, feature and effect.
As shown in Figures 1 to 5, the present embodiment composite absorption core, including the first absorbency set gradually from top to bottom Material 1, loft non-woven cloth material 4 and the second liquid absorbent material 7, first liquid absorbent material 1 and loft non-woven cloth material 4 Between be adhesively fixed and have the first high molecular material 3, bonded between the loft non-woven cloth material 4 and the second liquid absorbent material 7 solid Surely there is the second high molecular material 5, glued between first high molecular material 3 and the first liquid absorbent material 1 by the first fixed glue 2 It closes, is bonded between second high molecular material 5 and the second liquid absorbent material 7 by the second fixed glue 6.Wherein, due to fluffy The feature of nonwoven cloth material 4, the first high molecular material 3 and the second high molecular material 5 can be respectively into loft non-woven cloth materials 4 In the gap of top fiber net and lowermost fibre net, as shown in Figure 1, and the first high molecular material 3 and the second high molecular material 5 Distributed dimension range in loft non-woven cloth the upper and lower and the first macromolecule being arranged in other than loft non-woven cloth material 4 The size range of material 3 and the second high molecular material 5 is consistent, and 3D effect is also showed from layered structure.
It should be noted that high molecular material described below includes the first high molecular material 3 and the second high molecular material 5。
Wherein, the length of first high molecular material 3 is less than or equal to the length of second high molecular material 5, described The width of first high molecular material 3 is less than the width of second high molecular material 5, the width of second high molecular material 5 Less than the width of the loft non-woven cloth material 4.By way of being interrupted or continuously applying high molecular material, can easily it make multiple Each position can design reasonable macromolecule grammes per square metre value according to imbibition ability demand power before and after closing absorptive core, realize compound The 3D design effect of absorptive core.
The loft non-woven cloth material 4 be using containing in polypropylene, polyethylene, polyethylene terephthalate at least Two kinds at the core-sheath compound fibre that is grouped as and Three-dimensional crimped hollow type dacron fibre, by shredding, Mixing, combing, hot wind penetrate staple fiber hot-wind nonwoven cloth made of consolidation.
Wherein, the Three-dimensional crimped hollow type dacron fibre has hydrophily, in the present embodiment, The three-dimensional crimp refers to: a kind of fiber has rolled state on tri- directions X, Y, Z in rectangular coordinate system, can obtain bullet Property is all good, while having the loft non-woven cloth of high-loft.The Three-dimensional crimped hollow type dacron fibre Content account for 4 total fiber content ratio of loft non-woven cloth material in 5-20%, and upper layer in the loft non-woven cloth material 4 is fine The content of Three-dimensional crimped hollow type dacron fibre in dimension net is greater than in lowermost fibre net in three-dimensional crimp The content of casement dacron fibre.Under normal circumstances, upper and lower layer web has same square Mick Weight, can make top fiber net fluffy degree more fluffy than lowermost fibre net in this way, that is to say, that top fiber network capacity receives macromolecule The expansion space of material can be bigger, avoids top fiber network capacity and receives high molecular material and " gel blockage " phenomenon occurs, more favorably It transmits and spreads to lower layer in liquid.If 3 Gram Mass of the first high molecular material is less than 5 squares of Micks of the second high molecular material Weight, or, the first high molecular material 3 returns infiltration, high diffusivity ability with low, the second high molecular material 5 has quick penetrating power, Then said effect can become apparent from.
As shown in figs 6-8, the loft non-woven cloth material 4 includes at least two layers of knot of top fiber net and lowermost fibre net Structure, wherein vertically and horizontally fiber orientation degree arrangement ratio is less than in lowermost fibre net vertically and horizontally fiber orientation degree in top fiber net Ratio is arranged, and the fiber in top fiber net is less than the fiber pair in lowermost fibre net to the hydrophilic ability of saline fluid The hydrophilic ability of saline fluid, above-mentioned set-up mode is more advantageous to after liquid etc. absorbed by the first liquid absorbent material 1, from fluffy The upper layer rapid osmotic of loose nonwoven cloth material 4 is to lower layer, to keep the dry-ness of composite absorption core surface.
As shown in figure 9, the loft non-woven cloth material 4 includes at least top fiber net, mean fiber net and lower layer's fibre Net three-decker is tieed up, the fiber between the top fiber net and mean fiber net forms the first semiclosed hole from top to bottom, in Fiber between layer web and lowermost fibre net forms the second semiclosed hole from top to bottom, wherein the first semiclosed Kong Yu Two semiclosed hole connection settings；Hole is less than the partial size of high molecular material, gap between fiber in the mean fiber net Less than 100um, fibre fineness is less than or equal to 2Td, in this manner it is ensured that the first high molecular material 3 is concentrated mainly on upper layer fibre In dimension net, the second high molecular material 5 is concentrated mainly in lowermost fibre net, and two layers of high molecular material boundary layered is brighter The occurrence of showing, greatly reducing the first high molecular material 3 and the mixing of the second high molecular material 5, it is high especially for first When molecular material 3 has different absorbent properties from the second high molecular material 5, more had using such loft non-woven cloth structure Benefit.
Vertically and horizontally fiber orientation degree arrangement ratio is respectively less than middle layer web in the top fiber net, lowermost fibre net In vertically and horizontally fiber orientation degree arrange ratio, and to be less than middle layer to the hydrophilic ability of physiological saline fine for the fiber in top fiber net Net, the fiber in lowermost fibre net are tieed up to the hydrophilic ability of physiological saline, above-mentioned set-up mode is more advantageous to liquid etc. by first After liquid absorbent material 1 absorbs, from the upper layer rapid osmotic of loft non-woven cloth material 4 to lower layer, to keep composite absorbent core body surface Face it is dry-ness.
Under normal circumstances, if the contact angle of fiber and physiological saline is less than 90 °, fiber surface be it is hydrophilic, i.e., it is raw Reason salt water is easier to pass through, and contact angle is smaller, indicates that the hydrophilic ability of fiber surface is stronger；If the contact angle of fiber and physiological saline Greater than 90 °, then fiber surface is hydrophobic.The loft non-woven cloth 4 at the middle and upper levels the fiber in web to physiological saline Contact angle is greater than 60 ° and less than 90 °, then top fiber netlist reveals slightly water-wet, in lowermost fibre net or mean fiber net Fiber is greater than 0 ° to the contact angle of physiological saline and less than 60 °, then lowermost fibre netlist reveals strongly hydrophilic.Due to top fiber Vertically and horizontally fiber orientation degree arrangement ratio is less than in lowermost fibre net vertically and horizontally fiber orientation degree arrangement ratio in net.Show liquid Body is less than lowermost fibre net diffusion length in top fiber net diffusion length, and hydrophilic ability ladder is formed between upper and lower layer web It is poor to spend, and is conducive to liquid rapid osmotic to lowermost fibre net, and liquid is along lowermost fibre net longitudinal diffusion.In addition, even if One high molecular material 3 and the absorbent properties having the same of the second high molecular material 5 and identical Gram Mass, due to upper layer Three-dimensional crimped hollow type dacron fibre content is greater than Three-dimensional crimped hollow in lowermost fibre net in web Type dacron fibre content, such top fiber net fluffy degree is more fluffy than lowermost fibre net, accommodates high The expansion space of molecular material can be bigger, avoids top fiber network capacity and receives high molecular material and " gel blockage " phenomenon occurs, more Be conducive to liquid and transmit diffusion to lower layer.
Wherein, the direction " longitudinal direction " (MD) refers to the general direction for winding out along loft non-woven cloth, the direction " transverse direction " (CD) Refer to the direction being substantially perpendicular to the longitudinal.Vertically and horizontally fiber orientation degree arrangement ratio refers to loft non-woven cloth along MD to loft non-woven cloth Fiber orientation and the ratio between fiber orientation along CD, mainly pass through breaking strength and the direction CD in the direction loft non-woven cloth MD Breaking strength ratio calculate.
First high molecular material, 3/ second high molecular material 5 is the macromolecule by single specification or at least two specifications Material mixes.In the present embodiment, the first high molecular material 3 and the absorbent properties having the same of the second high molecular material 5 Or different absorbent properties, it is preferable that the first high molecular material 3 and the second high molecular material 5 have different absorbent properties or It is distributed with different Gram Mass, further, the Gram Mass of the first high molecular material 3 is less than the second macromolecule material The Gram Mass of material 5, the first high molecular material 3 return infiltration, high diffusivity ability with low, can quickly keep the diffusions such as liquid Composite absorbent core surface layer it is dry-ness；Second high molecular material 5 has fast penetrating power, can absorb liquid to greatest extent Deng.
The present embodiment composite absorption core can be also divided into according to its absorption function characteristic, absorbent body functional areas A, Two fixed area B and the first fixed area C (as shown in Figure 3 and Figure 4), Fig. 3 are composite absorption core the second high molecular material 5 in MD The hierarchical diagram of product and its high molecular material that interruption on direction applies, Fig. 4 are the second macromolecule of composite absorption core The hierarchical diagram of the product continuously applied in the MD direction of material 5 and its high molecular material.
Wherein, absorbent body functional areas A has high molecular material, and the high molecular material includes described above first high Molecular material 3 and the second high molecular material 5；The outside of the absorbent body functional areas A is arranged in second fixed area B, and it is not High molecular material is set；The outside of the absorbent body functional areas A, and its not set macromolecule material is arranged in first fixed area C Material.Wherein, for the absorbent body functional areas A by the compound fixation of hot melt adhesive, the second fixed area B and the first fixed area C are logical Cross the compound fixation of heat-sealing bonding part.
As shown in figure 3, the heat-sealing bonding portion includes the first heat-sealing bonding portion 8 and the second heat-sealing bonding portion 9, wherein institute 8/ second heat-sealing bonding portion 9 of the first heat-sealing bonding portion is stated to be combined and constituted by the lines of continuous waveform lines and/or interruption setting.
As shown in figure 4, then only including the first heat-sealing bonding portion 8 since the second high molecular material 5 is continuously arranged.Tool Body, the first longitudinally disposed heat-sealing bonding portion 8 is that continuous waveform lines are composed with the lines for being interrupted horizontal stripe, is arranged Direction is consistent with the direction MD of composite absorption core, is fixed in longitudinal two sides of composite absorption core by heat bonding, from And play banding, prevent high molecular material while composite absorption core two sides are revealed, it may have auxiliary guide functions.Edge Second heat-sealing bonding portion 9 of the direction the CD setting of composite absorption core can be continuous waveform lines, or be interruption setting Line image is the line image of interruption setting in the present embodiment, effectively passes through the rear and front end of composite absorption core Heat bonding is fixed up, this station also can be used hot melt adhesive bonding or ultrasonic bonds technique, specific implementation can be according to reality Depending on situation.Above-mentioned the first heat-sealing bonding portion 8 without high molecular material and the second heat-sealing bonding portion 9 also can it is continuous for other or It is interrupted the pattern of shape, as long as surrounding can all around will be adhesively fixed.
The width of first heat-sealing bonding portion 8 in the cd direction is 2-10mm, further preferably 3-6mm, the setting Mode is conducive to that banding technique is arranged in composite absorption core longitudinal direction two sides, prevents high molecular material the two of composite absorption core Side leakage；The length of second heat-sealing bonding portion 9 in the MD direction is 10-120mm, further preferably 30-80mm.First Heat-sealing bonding portion 8 and the second heat-sealing bonding portion 9 are mainly melt bonded by the meldable fibre in middle layer loft non-woven cloth 4, To which the surrounding all around of upper layer liquid absorbent material 1, intermediate loft non-woven cloth material 4, lower layer's liquid absorbent material 7 be bonded admittedly Get up calmly.The present embodiment is designed by reasonable structure, can reduce in composite absorption core macromolecule to greatest extent preceding The leakage probability of left and right surrounding afterwards, significantly improves product quality.
As shown in figure 5, the width E of first high molecular material 31With the width E of second high molecular material 52Ratio Value E1/E2Meet, 1/2 < E1/E2< 1.Further, first high molecular material 3 and second high molecular material 5 Width ratio E1/E2It is 4/5.Above-mentioned set-up mode makes leg and crotch contact zone, the free wxpansion height drop of high molecular material It is low, it avoids high molecular material from accumulating in leg, promotes the wearing comfort of product.The composite absorption core along the direction MD successively With the first macromolecule distributed area S1、S1', the second macromolecule distributed area S2、S2' and third macromolecule distributed area S3、S3', In, every Gram Mass of the high molecular material in above-mentioned distributed area meets: MS2> MS1> MS3；MS2’> MS1’=MS3’.Further, Within the scope of the A of main functionality uptake zone, also there is the dotted heat-sealing bonding portion of several discrete distributions arranged according to certain rules Groove area, the groove area is interior to be free of high molecular material, to form the liquid guide flow area for being free of high molecular material, promotes product Infiltration rate prevents side leakage and reverse osmosis.
In the present embodiment, successively there is along the direction MD F with compound core body product0-F10、B10-B0It is carried out for region It illustrates, in actual application, different subregions can be suitably adjusted according to actual needs.
Illustrate the distribution shape of the high molecular material of the above composite absorption core product by taking baby diaper L code as an example below Condition, due to the difference of the crotch biological region of boy and girl, the high molecular material of set composite absorption core Distributed areas are not also identical.First by taking boy as an example, as shown in table 1, Figure 10 and Figure 11, the composite absorption core along the direction MD according to It is secondary that there is F0-F10、B10-B0Region, wherein F0And B0For spacer region, the content of high molecular material is 0g；F1-F6Region is constituted First macromolecule distributed area S1, F7-F10Region constitutes the second macromolecule distributed area S2, B10-B1Region constitutes the distribution of third macromolecule Area S3；Wherein, square metre grams (gsm) of the high molecular material in each region meets relationship: MS2> MS1> MS3。
The F0-F10、B10-B0Region respectively corresponds an at least region, e.g., F0Region corresponds at least one region, F1Area Domain corresponds at least one region, in the present embodiment, respectively with F0-F10、B10-B0Region respectively corresponds a region and carries out specifically It illustrates.
Table 1 is suitable for the distribution table of the high molecular material grammes per square metre for the composite absorption core product that boy uses
As shown in Table 1, wherein each region (F set0-B0) size (length and width) it is consistent, this embodiment length Each region macromolecule is calculated further according to gsm (every Gram Mass) numerical value of each region setting for 18mm, width 90mm The grammes per square metre number of material.The data result for obtaining Figure 11 by the grammes per square metre number calculated result of Figure 10 again, specifically, F1-F2Region is first Absorb 1 area S of diffusion12(0.8g), F3-F6Region is that the first core absorbs 1 area S36(2.1g), F7-F10Region is also first main Core uptake zone S710(2.6g), B10-B7Region is that the first core absorbs 2 area S107(2.1g), B6-B1Region is that the first absorption is expanded Dissipate 2 area S61(2.4g), wherein high molecular material meets in the content of above-mentioned zone: MS710> MS61> MS36=MS107> MS12。
The layering signal also applied in the MD direction with above-mentioned high molecular material for entire composite absorption core product Figure corresponds to.As in figs. 3 and 11, two the second fixed area B before and after composite absorption core product respectively with spacer region F0And B0 It is corresponding.5th area of the second high molecular material of between first high molecular material 3 and the second fixed area B and corresponding product front end setting Domain absorbs with first and spreads 1 area S12It is corresponding；Between first high molecular material 3 and the second fixed area B and corresponding product rear end is set 5 region of the second high molecular material set absorbs with first and spreads 2 area S61It is corresponding.First core absorbs 1 area S36, it is first main Core uptake zone S710And first core absorb 2 area S107Form the first core uptake zone S of composite absorption core3-7, described First core uptake zone S3-7Also corresponding with absorbent body functional areas A, the first core uptake zone S in the present embodiment3-7Positioned at core Body position to the front.
Equally the composite absorption core used suitable for girl, be shown in Table shown in 2 and Figure 12, Figure 13, be suitable for male The difference for the composite absorption core style that child uses is: according to physiological property, the composite absorption core used suitable for girl is produced The essential core uptake zone of product is produced in the substantial middle position of entire core compared to the composite absorption core that boy uses is suitable for To the rear position of product style, the grammes per square metre of partial region be not identical.
In the present embodiment, the composite absorption core successively has F along the direction MD0-F10、B10-B0Region, wherein F0 And B0For spacer region, the content of high molecular material is 0g；F1-F8Region constitutes the first macromolecule distributed area S1', F9-B9Region Constitute the second macromolecule distributed area S2', B8-B1Region constitutes third macromolecule distributed area S3'；Wherein, wherein high molecular material Every Gram Mass in above-mentioned distributed area meets: MS2’> MS1’=MS3’。
Table 2 is suitable for the distribution table of the high molecular material for the absorbent body functional areas that girl uses
As shown in Table 2, wherein each region (F set0-B0) size (length and width) it is consistent, this embodiment length The grammes per square metre number of each region high molecular material is calculated further according to the gsm numerical value of each region setting for 18mm, width 90mm.Tool Body is F1-F4Region is that 1 area S is spread in the second absorption14(1.6g), F5-F8Region is that the second core absorbs 1 area S58(2.1g), F9- B9Region is also the second essential core uptake zone S99(2.6g), B8-B5Region is that the second core absorbs 2 area S85(2.1g), B4-B1 Region is that 2 area S are spread in the second absorption41(1.6g), wherein high molecular material meets in the content of above-mentioned zone: MS99> MS58= MS85> MS41=MS14。
It is same as the previously described embodiments, what entire composite absorption core product applied in the MD direction with above-mentioned high molecular material Hierarchical diagram is corresponding.As shown in Fig. 3 and Figure 13, two the second fixed area B points of the setting of composite absorption core product front and back end Not with spacer region F0And B0It is corresponding.The of between first high molecular material 3 and the second fixed area B and corresponding product front end setting Two high molecular materials, 5 region absorbs with second and spreads 1 area S14It is corresponding；Between first high molecular material 3 and the second fixed area B and 5 region of the second high molecular material of corresponding product rear end setting is absorbed with second spreads 2 area S41It is corresponding.Second core absorbs 1 Area S58, the second essential core uptake zone S99And second core absorb 2 area S85The second core for foring composite absorption core is inhaled Receive area S5-5, second core uptake zone S5-5Also corresponding with absorbent body functional areas A, the second core absorbs in the present embodiment Area S5-5Positioned at core substantial middle position.
Although high molecular material distribution and the high score of the composite absorption core used suitable for boy in each region of the product The distribution of sub- material is different, but for the grammes per square metre of the high molecular material of the core uptake zone of core be it is consistent, specifically For high molecular material is in the first core uptake zone S3-7(including the first core absorbs 1 area S36, the first essential core uptake zone S710 And first core absorb 2 area S107) content summation and its in the second core uptake zone S5-5(including the second core absorbs 1st area S58, the second essential core uptake zone S99And second core absorb 2 area S85) content summation it is identical, that is, MS3-7=MS5-5, In, MS3-7=MS36+MS710+MS107, MS5-5=MS58+MS99+MS85。
As shown in Figure 14 and Figure 15, it in order to further increase the diversion effect of composite absorption core, is absorbed in main functionality Within the scope of area A, it is additionally provided with the diversion trench 10 in the dotted heat-sealing bonding portion of several discrete distributions arranged according to certain rules, it is described to lead Chute 10 forms liquid guide flow area, wherein the liquid guide flow area is free of high molecular material.Wherein, the diversion trench 10 is set Setting quantity is at least one.
As shown in Figure 16 to Figure 18, the diversion trench in the present embodiment be respectively set to the linear type of dotted formation, fold-line-shaped, Arc line type, when specific implementation, are without being limited thereto, specific setting can according to the actual situation depending on.
While the structure in the first heat-sealing bonding portion 8 that the setting of composite absorption core is free of high molecular material, configuration is led Chute 10, the shape of diversion trench 10 can be straight line, broken line and arc line type (such as Figure 16-Figure 18) that dot is combined into.In order to more preferable Ground makes the first heat-sealing bonding portion 8 play the effect of dual flow guide with diversion trench 10, is set as linear type in the first heat-sealing bonding portion 8 In the case where, the diversion trench 10 of absorptive core is also provided with the type of being in line, as shown in figure 16.When the first heat-sealing bonding portion 8 is arranged When for broken line type, arc line type, by the pattern in the first heat-sealing bonding portion 8 without high molecular material be arranged to again both ends linear, Medial arc pattern, it is this also to be risen while preventing high molecular material from revealing with diversion trench 10 using similar shape To the effect of water conservancy diversion.It is such that the diversion effect for more having highlighted composite absorption core is set, more can under the action of dual flow guide Infiltration rate is improved, the utilization rate of composite absorption core is greatly improved.
First heat-sealing bonding portion 8 described in the present embodiment, it is main comprising corresponding with absorbent body functional areas a-quadrant first Body heat seals bonding part 81 and the first auxiliary heat-sealing bonding portion 82, and the length in the first main body heat-sealing bonding portion 81 is described the The 1/2-2/3 of one heat-sealing bonding portion, 8 length, the heat seal strength in the first main body heat-sealing bonding portion 81 are greater than the first auxiliary heat-sealing The heat seal strength of bonding part 82.Since physiological saline and so on liquid is concentrated mainly on absorbent body functional areas A, so, which exists The heat seal strength in the first main body heat-sealing bonding portion 81 will receive influence to a certain extent, therefore, heat seal strength is greater than The heat seal strength in the first auxiliary heat-sealing bonding portion 82.In the present embodiment, what the interruption in the first main body heat-sealing bonding portion 81 was arranged The width of bar paten is greater than the width for being interrupted the bar paten of setting in the first auxiliary heat-sealing bonding portion 82, in practical application The graphic width of continuous part can also be pressed to the above principle setting.
Wherein, the shortest distance W between described two first main body heat-sealing bonding portions 811It is wide for the compound core body Spend the 70%-85% of W, the shortest distance W between two first auxiliary heat-sealing bonding portions 822For the compound core body width The 80%-90% of W, i.e. three meet W1<W2<W.The first heat-sealing that above-mentioned set-up mode can protect main functionality uptake zone A is viscous Conjunction portion 8, and preferable diversion effect can be guaranteed by the diversion trench 10 that the first heat-sealing bonding portion 8 is constituted, and will not be because of liquid The sense of discomfort of infant's thigh root is caused etc. core edge is guided to.
Composite absorption core of the invention can efficiently avoid high molecular material in the left and right sides after multiple imbibition Side sprawling gathers expansion and the constriction caused by infant's thigh root and crotch region, improves thigh root and crotch Snugness of fit；The present invention is by the first heat-sealing bonding portion of setting and the second heat-sealing bonding portion, by the front and back of composite absorption core Left and right surrounding is adhesively fixed by the way that the meldable fibre generation in middle layer loft non-woven cloth is melt bonded, can be to greatest extent Reduction composite absorption core in SAP surrounding all around leakage probability；Further, since being provided with the first heat-sealing bonding Portion also can be along the first heat-sealing bonding portion even if composite absorbent core body left and right sides occurs in liquid, water conservancy diversion forward and backward Diffusion, avoids product side leakage；The present invention can easily make composite absorption by way of being interrupted or continuously applying high molecular material Reasonable macromolecule grammes per square metre value is designed at each position according to imbibition ability demand power before and after core, realizes composite absorption core 3D design effect；The present invention, which diversion trench is arranged inside composite absorbent core body avoids fluid transition, is gathered in the first or second Core uptake zone after solving multiple imbibition, is returned and seeps the problems such as bad, and the absorption speed of composite absorption core is fundamentally improved The dry and comfortable degree of degree and surface.
The above embodiments are merely illustrative of the technical solutions of the present invention and it is non-limiting, referring to preferred embodiment to the present invention into Detailed description is gone.Those skilled in the art should understand that technical solution of the present invention can be modified or be waited With replacement, without departing from the spirit and scope of the technical solution of the present invention, should all cover in scope of the presently claimed invention.

Claims (24)

1. a kind of composite absorption core, which is characterized in that
Including the first liquid absorbent material (1), loft non-woven cloth material (4) and the second absorbency material set gradually from top to bottom Expect (7),
Being adhesively fixed between first liquid absorbent material (1) and loft non-woven cloth material (4) has the first high molecular material (3),
Being adhesively fixed between the loft non-woven cloth material (4) and the second liquid absorbent material (7) has the second high molecular material (5)；
Wherein, the length of first high molecular material (3) is less than or equal to the length of second high molecular material (5), described The width of first high molecular material (3) is less than the width of second high molecular material (5), second high molecular material (5) Width be less than the loft non-woven cloth material (4) width；
First high molecular material (3) and the second high molecular material (5) form absorbent body functional areas (A), in the main body The outside in absorption function area (A), at least provided with the first fixed area (C), wherein the not set high score of first fixed area (C) Sub- material.
2. composite absorption core according to claim 1, which is characterized in that the loft non-woven cloth material (4) is to use The core-sheath compound fibre being grouped as containing at least two one-tenth in polypropylene, polyethylene, polyethylene terephthalate and three Dimension curling hollow type dacron fibre, penetrates short fibre made of consolidation by shredding, mixing, combing, hot wind Tie up hot-wind nonwoven cloth.
3. composite absorption core according to claim 1 or 2, which is characterized in that the loft non-woven cloth material (4) is at least Including top fiber net and lowermost fibre net, wherein vertically and horizontally fiber orientation degree arrangement ratio is less than lower layer in top fiber net Vertically and horizontally fiber orientation degree arranges ratio in web, and the fiber in top fiber net is to the hydrophilic ability of saline fluid Less than the fiber in lowermost fibre net to the hydrophilic ability of saline fluid.
4. composite absorption core according to claim 3, which is characterized in that
The loft non-woven cloth material (4) includes at least top fiber net, mean fiber net and lowermost fibre net,
Fiber between the top fiber net and mean fiber net forms the first semiclosed hole from top to bottom, mean fiber net and Fiber between lowermost fibre net forms the second semiclosed hole from top to bottom, wherein the first semiclosed hole and the second semiclosed hole Connection setting；
Hole is less than the partial size of high molecular material between fiber in the mean fiber net, and the aperture between fiber is less than 100um, fibre fineness are less than or equal to 2Td,
In the top fiber net, lowermost fibre net vertically and horizontally fiber orientation degree arrangement ratio be respectively less than in middle layer web indulge The transverse fiber degree of orientation arranges ratio,
And the fiber in top fiber net is less than mean fiber net, the fiber in lowermost fibre net to the hydrophilic ability of physiological saline To the hydrophilic ability of physiological saline.
5. compound core body according to claim 4, which is characterized in that the loft non-woven cloth is at the middle and upper levels in web Fiber is greater than 60 ° to the contact angle of physiological saline and less than 90 °, and the fiber in lowermost fibre net or mean fiber net is to physiology salt The contact angle of water is greater than 0 ° and less than 60 °.
6. composite absorption core according to claim 2, which is characterized in that the Three-dimensional crimped hollow poly terephthalic acid Two ester fiber of second has hydrophily, and fiber content accounts for loft non-woven cloth material (4) total fiber content ratio in 5-20%, and institute State containing for the Three-dimensional crimped hollow type dacron fibre in the top fiber net in loft non-woven cloth material (4) Amount is greater than the content of Three-dimensional crimped hollow dacron fibre in lowermost fibre net.
7. composite absorption core according to claim 1 or 2, which is characterized in that the first high molecular material (3)/the Two high molecular materials (5) are to be mixed by the high molecular material of single specification or at least two specifications.
8. composite absorption core according to claim 1 or 2, which is characterized in that the width of first high molecular material (3) Spend E1With the width E of second high molecular material (5)2Ratio E1/E2Meet 1/2 < E1/E2< 1.
9. composite absorption core according to claim 1, which is characterized in that in the outer of the absorbent body functional areas (A) Side is additionally provided with the second fixed area (B), and second fixed area (B) not set high molecular material.
10. according to claim 1 or composite absorption core described in 9, which is characterized in that the composite absorption core is along the direction MD Successively there is the first macromolecule distributed area (S1、S1'), the second macromolecule distributed area (S2, S2') and third macromolecule distributed area (S3, S3'),
Wherein, every Gram Mass of the high molecular material in above-mentioned distributed area meets: MS2> MS1> MS3；MS2’> MS1’=MS3’。
11. composite absorption core according to claim 10, which is characterized in that
The composite absorption core successively has F along the direction MD0Area, first absorb 1 area (S of diffusion12), the first core uptake zone (S3-7), first absorb diffusion 2 area (S61) and B0Area,
Wherein, F0Area and B0Area is spacer region, and the content of high molecular material is 0g；
Wherein, high molecular material meets in the content of above-mentioned zone:
MS3-7> MS61> MS12。
12. composite absorption core according to claim 11, which is characterized in that
First core uptake zone (S3-7) along the direction MD successively have the first core absorb 1 area (S36), the first essential core inhale Receive area (S710) and 2 area (S of the first core absorption107),
Wherein, high molecular material meets in the content of above-mentioned zone:
MS3-7> MS710> MS61> MS36=MS107> MS12, wherein MS3-7=MS36+MS710+MS107。
13. composite absorption core according to claim 12, which is characterized in that
Described first absorbs 1 area (S of diffusion12) it include at least one region,
First core absorbs 1 area (S36) it include at least one region,
First essential core uptake zone (S710) it include at least one region,
First core absorbs 2 area (S107) it include at least one region,
Described first absorbs 2 area (S of diffusion61) it include at least one region,
Wherein, described first absorbs 1 area (S of diffusion12) and 1 area (S of the first core absorption36) constitute the first macromolecule distributed area (S1), first essential core uptake zone (S710) constitute the second macromolecule distributed area (S2), first core absorbs 2nd area (S107) and the first 2 area (S of absorption diffusion61) constitute third macromolecule distributed area (S3)。
14. composite absorption core according to claim 13, which is characterized in that
The composite absorption core successively has F along the direction MD0Area, second absorb 1 area (S of diffusion14), the second core uptake zone (S5-5), second absorb diffusion 2 area (S41) and B0Area,
Wherein, F0Area and B0Area is spacer region, and the content of high molecular material is 0g；
Wherein, high molecular material meets in the content of above-mentioned zone:
MS5-5> MS41=MS14。
15. composite absorption core according to claim 14, which is characterized in that
Second core uptake zone (S5-5) along the direction MD successively have the second core absorb 1 area (S58), the second essential core inhale Receive area (S99) and 2 area (S of the second core absorption85),
Wherein, high molecular material meets in the content of above-mentioned zone:
MS5-5> MS99> MS58=MS85> MS41=MS14, wherein MS5-5=MS58+MS99+MS85。
16. composite absorption core according to claim 15, which is characterized in that
Described second absorbs 1 area (S of diffusion14) it include at least one region,
Second core absorbs 1 area (S58) it include at least one region,
Second essential core uptake zone (S99) it include at least one region,
Second core absorbs 2 area (S85) it include at least one region,
Described second absorbs 2 area (S of diffusion41) it include at least one region,
Wherein, described second absorbs 1 area (S of diffusion14) and 1 area (S of the second core absorption58) constitute the first macromolecule distributed area (S1'), second essential core uptake zone (S99) constitute the second macromolecule distributed area (S2'), second core absorbs 2nd area (S85) and the second 2 area (S of absorption diffusion41) constitute third macromolecule distributed area (S3’)。
17. composite absorption core according to claim 15, which is characterized in that
Wherein, high molecular material also meets in the content of above-mentioned zone:
High molecular material is in the first core uptake zone (S3-7) content and its in the second core uptake zone (S5-5) content it is identical, That is, MS3-7=MS5-5。
18. composite absorption core according to claim 1, which is characterized in that the absorbent body functional areas
(A) diversion trench (10) being made of the heat-sealing bonding portion of several discrete distributions is additionally provided in, the diversion trench (10) is formed Liquid guide flow area, wherein the liquid guide flow area is free of high molecular material.
19. composite absorption core according to claim 18, which is characterized in that the diversion trench (10) is symmetrically arranged Linear type, broken line type or arc line type structure.
20. composite absorption core according to claim 9, which is characterized in that the absorbent body functional areas (A) pass through heat The compound fixation of melten gel, second fixed area (B) and the first fixed area (C) pass through the compound fixation in heat-sealing bonding portion.
21. composite absorption core described in 8 or 20 according to claim 1, which is characterized in that the heat-sealing bonding portion includes first Heat-sealing bonding portion (8), alternatively, including the first heat-sealing bonding portion (8) and the second heat-sealing bonding portion (9), wherein first heat-sealing It is combined and is constituted by the lines of continuous waveform lines and/or interruption setting in bonding part (8)/second heat-sealing bonding portion (9).
22. composite absorption core according to claim 21, which is characterized in that
First heat-sealing bonding portion (8) includes the first main body heat-sealing bonding corresponding with the absorbent body functional areas region (A) Portion (81) and the first auxiliary heat-sealing bonding portion (82),
The length of the first main body heat-sealing bonding portion (81) is the 1/2-2/3 of first heat-sealing bonding portion (8) length,
The heat seal strength of the first main body heat-sealing bonding portion (81) is greater than the heat seal strength of the first auxiliary heat-sealing bonding portion (82).
23. composite absorption core according to claim 22, which is characterized in that two the first main body heat-sealing bonding portions (81) shortest distance W between1For the 70%-85% of the compound core body width W, two first auxiliary heat-sealing bonding portions (82) shortest distance W between2For the 80%-90% of the compound core body width W, i.e. three meets W1<W2<W。
24. composite absorption core according to claim 21, which is characterized in that first heat-sealing bonding portion (8) is in CD Width on direction is 2-10mm, and the length of second heat-sealing bonding portion (9) in the MD direction is 10-120mm.
CN201810670035.4A 2018-06-26 2018-06-26 Composite absorption core Active CN109106513B (en)

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CN112155861A (en) * 2020-10-27 2021-01-01 湖南爽洁卫生用品有限公司 Absorption core body with low reverse osmosis rate
CN114096222A (en) * 2019-07-03 2022-02-25 株式会社瑞光 Method for manufacturing absorbent body of absorbent article, and absorbent article

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CN106963562A (en) * 2017-04-01 2017-07-21 广东恒实业有限公司 A kind of high-absorbility paper diaper core body
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CN204971911U (en) * 2015-07-24 2016-01-20 晋江市益源卫生用品有限公司 Absorptivity health is compound paper that absorbs water of dumbbell shape for goods
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CN114096222A (en) * 2019-07-03 2022-02-25 株式会社瑞光 Method for manufacturing absorbent body of absorbent article, and absorbent article
CN112155861A (en) * 2020-10-27 2021-01-01 湖南爽洁卫生用品有限公司 Absorption core body with low reverse osmosis rate

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