CN120478054B - High-diffusion baby diaper and preparation method thereof - Google Patents

High-diffusion baby diaper and preparation method thereof

Info

Publication number
CN120478054B
CN120478054B CN202510998070.9A CN202510998070A CN120478054B CN 120478054 B CN120478054 B CN 120478054B CN 202510998070 A CN202510998070 A CN 202510998070A CN 120478054 B CN120478054 B CN 120478054B
Authority
CN
China
Prior art keywords
woven fabric
resin particles
layer
absorbing resin
material layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202510998070.9A
Other languages
Chinese (zh)
Other versions
CN120478054A (en
Inventor
郑友政
郑远新
曾灿海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujian Meike Paper Co ltd
Original Assignee
Fujian Meike Paper Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujian Meike Paper Co ltd filed Critical Fujian Meike Paper Co ltd
Priority to CN202510998070.9A priority Critical patent/CN120478054B/en
Publication of CN120478054A publication Critical patent/CN120478054A/en
Application granted granted Critical
Publication of CN120478054B publication Critical patent/CN120478054B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent 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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/496—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 specially adapted to be worn around the waist, e.g. diapers, nappies in the form of pants or briefs
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15699—Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15723—Partitioning batts; Cutting
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15756—Applying tabs, strips, tapes, loops; Knotting the ends of pads
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15764—Transferring, feeding or handling devices; Drives
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15804—Plant, e.g. involving several steps
    • 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
    • A61F13/53704—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 an inhibiting function on liquid propagation
    • 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
    • A61F13/53708—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
    • A61F13/53717—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 horizontal 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
    • A61F13/5376—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 performance of the layer, e.g. acquisition rate, distribution time, transfer time
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
    • A61F2013/15861—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding
    • A61F2013/15869—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding with ultrasonic energy
    • 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
    • A61F2013/530007—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 from 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
    • A61F2013/53051—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 being only in particular parts or specially arranged
    • 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
    • A61F2013/53721—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 with capillary means
    • A61F2013/53726—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 with capillary means on the top layer

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

Abstract

The invention relates to the field of disposable sanitary products, in particular to a high-diffusion baby diaper and a preparation method thereof, the prepared baby diaper has the characteristics of good flow guiding effect and high absorption efficiency, an absorption core layer comprises a top layer non-woven fabric, a middle non-woven fabric, a bulk non-woven fabric, a bottom layer non-woven fabric, a wood pulp fiber layer, a first absorption material layer and a second absorption material layer, the first absorption material layer comprises first high-molecular water-absorbing resin particles and first wood pulp fibers, the second absorbing material layer comprises second high-molecular water-absorbing resin particles, the second absorbing material layer is arranged between the bulk non-woven fabric and the bottom non-woven fabric, part of the second high-molecular water-absorbing resin particles on the second absorbing material layer are embedded in the pores of the bulk non-woven fabric, the first absorbing material layer is arranged between the bulk non-woven fabric and the middle non-woven fabric, and part of the first high-molecular water-absorbing resin particles on the first absorbing material layer are embedded in the pores of the bulk non-woven fabric.

Description

High-diffusion baby diaper and preparation method thereof
Technical Field
The invention relates to the field of disposable sanitary products, in particular to a high-diffusion baby diaper and a preparation method thereof.
Background
The paper diaper generally has a structure comprising a liquid-permeable surface layer, an absorption core layer and a liquid-impermeable bottom layer which are sequentially arranged from top to bottom, wherein the absorption core layer is generally formed by mixing high-molecular water-absorbent resin particles with wood pulp fibers and wrapping the high-molecular water-absorbent resin particles with non-woven fabrics to form a block structure for absorbing and retaining human body excretory fluid, the liquid-permeable surface layer is composed of hydrophilic non-woven fabrics and hydrophobic non-woven fabrics respectively fixedly arranged on two lateral sides of the hydrophilic non-woven fabrics and used for providing comfortable and dry feeling when contacting with a human body and allowing the liquid to freely pass through and enter the absorption core layer of the lower layer, and the liquid-impermeable bottom layer is formed by compounding an air-permeable waterproof film and the hydrophobic non-woven fabrics and used for retaining the absorbed liquid in the absorption core layer, so that the absorbed liquid is prevented from polluting trousers of a wearer.
When the disposable urine absorbent core is used, the single-layer absorbent core layer depends on natural diffusion of high-molecular water-absorbent resin particles, urine is easy to gather at contact points to form local saturation, so that the absorption rate is reduced, the absorbent core body is lack of a three-dimensional flow guide structure, and a large amount of urine is easy to reversely permeate to the surface layer due to the pressure effect after being absorbed, so that skin problems such as red buttocks and the like are caused.
Disclosure of Invention
Therefore, the invention provides the high-diffusion baby diaper with good flow guiding effect and high absorption efficiency and the preparation method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The utility model provides a high diffusion baby diaper, includes the panty-shape diapers body, defines and extends to longitudinal direction along the length direction of panty-shape diapers body, extends to transverse direction along the width direction of panty-shape diapers body, the panty-shape diapers body includes liquid-permeable top layer, absorption sandwich layer and the impermeable bottom layer of range upon range of setting in proper order from the top down, the panty-shape diapers body has front waist district, back waist district and the crotch district of distributing between front waist district and back waist district along longitudinal direction, the absorption sandwich layer has the first absorption district that is located transverse one side of transverse axis and the second absorption district that is located transverse other side of transverse axis, the absorption sandwich layer has upper edge, the lower limb of distributing at longitudinal both ends and the left edge, the right limb of distributing at transverse both ends;
the absorbent core layer comprises a top layer non-woven fabric, a middle non-woven fabric, a bulk non-woven fabric, a bottom layer non-woven fabric, a wood pulp fiber layer, a first absorbent material layer and a second absorbent material layer, wherein the first absorbent material layer comprises first high-molecular water-absorbing resin particles and first wood pulp fibers, the second absorbent material layer comprises second high-molecular water-absorbing resin particles, the second absorbent material layer is arranged between the bulk non-woven fabric and the bottom layer non-woven fabric, part of the second high-molecular water-absorbing resin particles on the second absorbent material layer are embedded in pores of the bulk non-woven fabric, the first absorbent material layer is arranged between the bulk non-woven fabric and the middle non-woven fabric, part of the first high-molecular water-absorbing resin particles on the first absorbent material layer are embedded in the pores of the bulk non-woven fabric, the other part of the first high-molecular water-absorbing resin particles and the first wood pulp fibers are mixed and distributed on the upper surface of the bulk non-woven fabric, and the average gram weight of the first high-molecular water-absorbing resin particles on the first absorbent material layer and the average gram weight of the second high-molecular water-absorbing resin particles on the second absorbent material layer are 0.5g/m & lt 2 & gt-35 g/m & lt 2 & gt/m & gt.
The first absorption region of the bulk non-woven fabric is provided with a first diversion region and a second diversion region which do not contain first macromolecule water absorbent resin particles and second macromolecule water absorbent resin particles along the longitudinal direction, the longitudinal middle part of the first diversion region coincides with the longitudinal middle part of the second diversion region, the second absorption region of the bulk non-woven fabric is provided with a third diversion region and a fourth diversion region which do not contain the first macromolecule water absorbent resin particles and the second macromolecule water absorbent resin particles along the longitudinal direction, the longitudinal middle part of the third diversion region coincides with the longitudinal middle part of the fourth diversion region, the middle non-woven fabric, the bulk non-woven fabric and the bottom layer non-woven fabric are in composite connection at the first diversion region, the second diversion region, the third diversion region and the fourth diversion region, when the first macromolecule water absorbent resin particles and the second macromolecule water absorbent resin particles swell, the first diversion region and the second diversion region form a first diversion trench and a second diversion trench, the third diversion region and the third diversion region of the second absorption region form a third diversion trench and a fourth diversion trench, the middle non-woven fabric, the bottom layer non-woven fabric and the bottom layer non-woven fabric is laid on the surface of the top layer of the wood pulp absorbent layer of the wood pulp layer of which has the pressure of 5/5 g is not to be permeated, and the surface of the top layer of the wood pulp layer is laid on the surface of the top layer of the composite layer of the high absorbent layer is not in the wood absorbent layer.
Further, the second guiding gutter distributes in the horizontal outside of first guiding gutter, the vertical both ends of first guiding gutter are not in upper edge and lower limb connection, the second guiding gutter is the arc structure, the vertical both ends of second guiding gutter are connected with left edge respectively, the fourth guiding gutter distributes in the horizontal outside of third guiding gutter, the vertical both ends of third guiding gutter are not in upper edge and lower limb connection, the fourth guiding gutter is the arc structure, the vertical both ends of fourth guiding gutter are connected with right edge respectively.
Further, the longitudinal two ends of the first diversion trench and the third diversion trench extend into the front waist region and the rear waist region respectively.
Further, the second diversion trench and the fourth diversion trench are distributed in the crotch area.
Further, the liquid-permeable surface layer comprises hydrophilic non-woven fabrics and hydrophobic non-woven fabrics which are fixedly arranged on the two lateral sides of the hydrophilic non-woven fabrics in a distributed mode, the hydrophilic non-woven fabrics are adhered to the upper surface of the absorption core layer and the two lateral sides of the absorption core layer and are adhered to the liquid-impermeable bottom layer, the first leakproof flange and the second leakproof flange are formed by folding the outer lateral sides of the hydrophobic non-woven fabrics, the second leakproof flange is distributed on the outer lateral sides of the first leakproof flange, the height dimension of the second leakproof flange is larger than that of the first leakproof flange, the first elastic rubber band is embedded in the free end of the first leakproof flange, and the second elastic rubber band is embedded in the free end of the second leakproof flange.
Further, the height dimension of the first leakage-proof flange is 2-3 cm, and the height dimension of the second leakage-proof flange is 4-6 cm.
Further, the front waist region of the diaper body is provided with a front baffle, the transverse two sides of the front baffle are respectively compounded on the upper surface of the first leakage-proof baffle, the longitudinal outer side of the front baffle is compounded on the upper surface of the hydrophilic non-woven fabric, the front baffle is covered on one longitudinal side of the first diversion trench and the third diversion trench, the front waist region of the diaper body is provided with a rear baffle, the transverse two sides of the rear baffle are respectively compounded on the upper surface of the first leakage-proof baffle, and the longitudinal outer side of the rear baffle is compounded on the upper surface of the hydrophilic non-woven fabric.
Further, the average grammage of the first high molecular water absorbent resin particles of the first absorption material layer is smaller than the average grammage of the second high molecular water absorbent resin particles of the second absorption material layer.
Further, the water absorption amount of the second absorption material layer is reduced stepwise from the longitudinal middle part of the diaper body to the longitudinal two ends.
The preparation method of the high-diffusion baby diaper comprises the following steps of:
1. preparing a liquid impermeable back sheet;
2. Preparing an absorption core layer:
1) Unreeling and conveying the bulk non-woven fabric in a roll shape, wherein the longitudinal direction is defined as extending along the conveying direction of the bulk non-woven fabric, and the transverse direction is defined as extending along the width direction of the bulk non-woven fabric;
2) Applying second high-molecular water-absorbent resin particles on the lower surface of the bulk non-woven fabric through a blanking roller, wherein a storage tank for storing the second high-molecular water-absorbent resin particles is arranged on the blanking roller, and convex strips are convexly arranged in the storage tank;
3) Unreeling and conveying the bottom non-woven fabric in a roll shape, and compounding the bottom non-woven fabric on the product in the step 2);
4) Sequentially applying first high molecular water-absorbing resin particles and first wood pulp fibers on the upper surface of the bulk non-woven fabric;
5) Unreeling the intermediate nonwoven in roll form and conforming it to the article of step 4):
6) Welding and fixing the middle non-woven fabric, the bulk non-woven fabric and the bottom non-woven fabric along the area where the first high polymer water absorbing resin particles and the second high polymer water absorbing resin particles are not applied by an ultrasonic welding device;
7) Applying a layer of wood pulp fibers to the upper surface of the article of step 6);
8) Unreeling and conveying the top layer non-woven fabric in a roll shape, and compounding the top layer non-woven fabric on the product in the step 7);
3. Preparing a liquid-permeable surface layer:
9) Unreeling and conveying the hydrophilic non-woven fabric in a roll shape;
10 Unreeling and conveying the reeled hydrophobic non-woven fabric, and cutting the reeled hydrophobic non-woven fabric to form a left hydrophobic non-woven fabric and a right hydrophobic non-woven fabric;
11 The first elastic rubber band and the second elastic rubber band are respectively compounded on the left hydrophobic non-woven fabric and the right hydrophobic non-woven fabric;
12 The left hydrophobic non-woven fabric and the right hydrophobic non-woven fabric are respectively folded through the folding plate to form a first leakage-proof flange and a second leakage-proof flange;
4. the liquid-impermeable bottom layer, the absorption core layer and the liquid-permeable surface layer are sequentially laminated and compositely connected from bottom to top;
5. And (3) slitting the product obtained in the step four to form a single paper diaper body.
According to the high-diffusion baby diaper and the preparation method thereof, the first absorption area and the second absorption area are arranged, and the multi-layer material combination with a specific structure is adopted in the absorption core layer, so that the first high-molecular water-absorbing resin particles and the second high-molecular water-absorbing resin particles are respectively distributed at the relevant positions of the bulk non-woven fabric in different modes, meanwhile, the diversion areas without the high-molecular water-absorbing resin particles are arranged in different absorption areas of the bulk non-woven fabric, when urine is contacted, the urine can be rapidly dispersed to a larger range by virtue of the special structure and the diversion area design of the bulk non-woven fabric, local saturation is avoided, the absorption efficiency is improved, and particularly, the urine enters into the wood pulp fiber layer through the liquid-permeable surface layer and the top layer non-woven fabric, the capillary pressure difference of the wood pulp fibers in the wood pulp fiber layer is utilized to form a 'pulling effect', so that the urine is quickly led into the inner layer after contacting the surface layer, and is arranged in a transverse diversion and lower penetration way through the wood pulp fibers in the wood pulp fiber layer, part of the urine is absorbed and fixed by the first absorption material layer, and the other part of the urine can be absorbed and fixed by the first absorption layer, and the other part of the urine can pass through the first diversion grooves, the second diversion grooves and the fourth high-molecular water-absorbing resin particles and the high-absorbing resin particles are combined with the first absorption material, and the longitudinal absorption effect is improved, and the absorption effect of the absorption of the high-molecular water-absorbing particles is achieved; and when the high molecular water-absorbing resin particles swell, the diversion trench is formed, thereby further enhancing the diversion effect, effectively reducing urine reverse osmosis, the risk of skin problems such as red buttocks and the like caused is reduced, and the overall performance of the paper diaper is improved.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
fig. 2 is a schematic top view of a diaper body in an unfolded state according to an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of the structure at A-A in FIG. 2;
FIG. 4 is a schematic top view of a lofty nonwoven fabric according to an embodiment of the invention;
FIG. 5 is a schematic perspective view of a blanking roller in an embodiment of the present invention;
fig. 6 is a schematic perspective view of a tester according to an embodiment of the present invention.
Detailed Description
The invention will now be further described with reference to the drawings and detailed description.
The embodiment of the invention comprises the following steps:
Referring to fig. 1 to 4, a high diffusion baby diaper comprises a diaper body 1, wherein the diaper body 1 is defined to extend along the length direction of the diaper body 1 to be longitudinal direction, and extends along the width direction of the diaper body 1 to be transverse direction, the diaper body 1 comprises a liquid permeable surface layer 11, an absorbent core layer 12 and a liquid impermeable bottom layer 13 which are sequentially stacked from top to bottom, the diaper body 1 is provided with a front waist region 101, a rear waist region 102 and a crotch region 103 which are distributed along the longitudinal direction and between the front waist region 101 and the rear waist region 102, the absorbent core layer 12 is provided with a first absorption region 100 which is positioned at one transverse side of a transverse central axis and a second absorption region 200 which is positioned at the other transverse side of the transverse central axis, and the absorbent core layer 12 is provided with an upper edge 201, a lower edge 202 and left edge 203 and a right edge 204 which are distributed at two transverse ends;
The absorbent core layer 12 comprises a top layer non-woven fabric 121, a middle non-woven fabric 122, a bulk non-woven fabric 123, a bottom layer non-woven fabric 124, a wood pulp fiber layer 125, a first absorbent material layer 126 and a second absorbent material layer 127, wherein the first absorbent material layer 126 comprises first high molecular water-absorbing resin particles and first wood pulp fibers, the second absorbent material layer 127 comprises second high molecular water-absorbing resin particles, the second absorbent material layer 127 is arranged between the bulk non-woven fabric 123 and the bottom layer non-woven fabric 124, part of the second high molecular water-absorbing resin particles on the second absorbent material layer 127 are embedded in pores of the bulk non-woven fabric 123, the first absorbent material layer 126 is arranged between the bulk non-woven fabric 123 and the middle non-woven fabric 122, part of the first high molecular water-absorbing resin particles on the first absorbent material layer 126 are embedded in pores of the bulk non-woven fabric 123, the other part of the first high molecular water-absorbing resin particles and the first wood pulp fibers are mixed and distributed on the upper surface of the bulk non-woven fabric 123, and the average gram weight of the first high molecular water-absorbing resin particles on the first absorbent material layer 126 and the average gram weight of the second high molecular water-absorbing resin particles on the second absorbent material layer 127 are both 0.35 g/m to 2 g/m;
The first absorption region 100 of the bulky nonwoven fabric 123 is provided with a first diversion region 301 and a second diversion region 302 which do not contain first macromolecule absorbent resin particles and second macromolecule absorbent resin particles along the longitudinal direction, the longitudinal middle part of the first diversion region 301 coincides with the longitudinal middle part of the second diversion region 302, the second absorption region 200 of the bulky nonwoven fabric 123 is provided with a third diversion region 303 and a fourth diversion region 304 which do not contain first macromolecule absorbent resin particles and second macromolecule absorbent resin particles along the longitudinal direction, the longitudinal middle part of the third diversion region 303 coincides with the longitudinal middle part of the fourth diversion region 304, the middle nonwoven fabric 122, the bulky nonwoven fabric 123 and the bottom layer nonwoven fabric 124 are in composite connection with the first diversion region 301, the second diversion region 302, the third diversion region 303 and the fourth diversion region 304, when the first macromolecule absorbent resin particles and the second macromolecule absorbent resin particles swell, the first diversion region 301 and the second diversion region 302 of the first absorption region 100 form a first diversion trench 401 and a second diversion trench 402, the third diversion trench 200 and the third diversion trench 304 are formed on the surface of the top layer 125 of the third nonwoven fabric 122 and the third diversion trench 125 laid on the surface of the third non-woven fabric layer 122;
The top layer non-woven fabric 121 and the wood pulp fiber layer 125 are pressed with concave hole structures 2 distributed in a matrix manner, so that the urine seepage speed is improved, and the absorption speed is further improved.
The high-diffusion baby diaper comprises a plurality of layers of material combinations with specific structures, wherein the layers of material combinations are arranged in a first absorption area 100 and a second absorption area 200, the first and second high-molecular water-absorbing resin particles are respectively distributed at the relevant positions of a bulk non-woven fabric 123 in different modes, meanwhile, diversion areas without high-molecular water-absorbing resin particles are arranged in different absorption areas of the bulk non-woven fabric 123, so that when urine is contacted, the urine can be rapidly dispersed to a larger range by means of the special structure of the bulk non-woven fabric and the design of the diversion areas, the local saturation is avoided, the absorption efficiency is improved, and particularly, the urine enters into a wood pulp fiber layer 125 through the capillary pressure difference of wood pulp fibers in the wood pulp fiber layer 125 to form a 'pulling effect', so that the urine is rapidly guided into an inner layer after contacting the surface layer, and is subjected to the arrangement of the wood pulp fibers in the wood pulp fiber layer 125 in a bulk mode, the urine is absorbed and fixed by a first absorption material layer 126, and the other part of the urine is absorbed and fixed by the first absorption material layer through a first diversion trench 401, a second diversion trench 402, a third diversion trench 403 and a fourth absorption material layer are arranged, and the absorption material is combined with the high-molecular water-absorbing resin particles in the longitudinal direction through the second absorption material layer and the high-absorption material layer is prevented from being absorbed by the high-molecular water-absorbing particles; and when the high molecular water-absorbing resin particles swell, the diversion trench is formed, thereby further enhancing the diversion effect, effectively reducing the reverse osmosis of urine, reducing the risk of inducing skin problems such as red buttocks and the like, the overall performance of the paper diaper is improved.
Specifically, the second diversion trench 402 is distributed on the lateral outside of the first diversion trench 401, the two longitudinal ends of the first diversion trench are not connected with the upper edge 201 and the lower edge 202, the second diversion trench 402 is in an arc structure, the two longitudinal ends of the second diversion trench 402 are respectively connected with the left edge 203, the fourth diversion trench 404 is distributed on the lateral outside of the third diversion trench 403, the two longitudinal ends of the third diversion trench 403 are not connected with the upper edge 201 and the lower edge 202, the fourth diversion trench 404 is in an arc structure, the two longitudinal ends of the fourth diversion trench 404 are respectively connected with the right edge 204, the second diversion trench 402 is distributed on the lateral outside of the first diversion trench 401 and in an arc structure, the fourth diversion trench 404 is distributed on the lateral outside of the third diversion trench 403 and in an arc structure, the design is more fit with the curve of the infant body, the urine can be better guided to diffuse according to a specific path in the urine absorption process, the urine distribution is more uniform, the absorption efficiency and the diversion effect are further improved, and the arc structure is beneficial to reducing friction to the skin of the infant and improving the wearing comfort.
And, the longitudinal both ends of first guiding gutter 401, third guiding gutter 403 extend respectively to in preceding waist region 101 and the back waist region 102, and this kind of design makes the urine can more extensively diffuse to the front and back region of panty-shape diapers in the absorption process, and the whole absorption space of make full use of panty-shape diapers avoids urine to concentrate in crotch region, has further improved absorption capacity and absorption efficiency, reduces the side leakage scheduling problem that leads to because of the local absorption saturation.
Further, the second diversion trench 402 and the fourth diversion trench 404 are distributed in the crotch area 103, the crotch is the part where urine is most easy to concentrate, the urine concentrated in the crotch area can be quickly dispersed by arranging the diversion trench in the area, the urine is prevented from accumulating in the crotch area, the absorption pressure of the crotch area is effectively reduced, the absorption and diversion performance of the key part are improved, the risk of reverse osmosis of the urine to the surface layer is reduced, and the skin of an infant is better protected.
Notably, the second wood pulp fibers 3 are filled in the first diversion trench 401 and the third diversion trench 403 and are positioned at the lower side of the bulked non-woven fabric 123, the second wood pulp fibers 3 are not in composite connection with the liquid-impermeable bottom layer 13, the second wood pulp fibers 3 can absorb a certain amount of urine, an auxiliary absorption effect is achieved, and meanwhile the second wood pulp fibers are not in composite connection with the liquid-impermeable bottom layer 13, so that the absorbed urine can be more smoothly diffused in the diaper and absorbed by other absorption layers, and the absorption capacity and the flow guiding effect of the diaper are further enhanced.
In this embodiment, the liquid-permeable surface layer 11 comprises a hydrophilic non-woven fabric 111 and hydrophobic non-woven fabrics 112 fixedly arranged on two lateral sides of the hydrophilic non-woven fabric 111, the hydrophilic non-woven fabric 111 is adhered to the upper surface of the absorbent core layer 12 and two lateral sides of the absorbent core layer 12 and is adhered to the liquid-impermeable bottom layer 13 together with the absorbent core layer 12, the lateral outer side of the hydrophobic non-woven fabric 122 is folded to form a first leakproof flange 4 and a second leakproof flange 5, the second leakproof flange 5 is distributed on the lateral outer side of the first leakproof flange 4, the height dimension of the second leakproof flange 5 is larger than that of the first leakproof flange 4, the free end of the first leakproof flange 4 is embedded with a first elastic rubber band 6, the free end of the second leakproof flange 5 is embedded with a second elastic rubber band 7, the liquid-permeable surface layer 11 is adhered to the relevant surface of the absorbent core layer 12 together with the absorbent core layer 12 by adopting the hydrophilic non-woven fabric 111, good liquid-permeable bottom layer 13 is guaranteed, the urine can quickly permeate the liquid-permeable bottom layer 12 and the liquid-impermeable bottom layer is prevented from entering the first leakproof flange 4, and the liquid-permeable surface layer can be completely folded to the different height dimension of the first leakproof flange 4, and the liquid-permeable surface layer can be prevented from being completely folded to form the different leakproof flange 4 according to the different height, and the different height requirements can be designed to the different height.
Moreover, the height dimension of the first leakage-proof flange 4 is 2-3 cm, preferably 3cm, the height dimension of the second leakage-proof flange 5 is 4-6 cm, preferably 5cm, the specific dimension range is set according to the physical characteristics and the actual use requirements of the infant and is optimized, good leakage-proof effect can be ensured, the activity comfort level of the infant is not influenced due to overhigh flange, and good balance is achieved between leakage-proof performance and wearing comfort.
Simultaneously, the front waist region 101 of panty-shape diapers body 1 is equipped with preceding separation blade 8, the horizontal both sides limit of preceding separation blade 8 is compound respectively on the upper surface of first leak protection flange 4, the vertical outside limit of preceding separation blade 8 is compound on the upper surface of hydrophilic non-woven fabrics 111, preceding separation blade 8 covers in the vertical one side of first guiding gutter 401, third guiding gutter 403, the front waist region 101 of panty-shape diapers body 1 is equipped with back separation blade 9, the horizontal both sides limit of back separation blade 9 is compound respectively on the upper surface of first leak protection flange 4, the vertical outside limit of back separation blade 9 is compound on the upper surface of hydrophilic non-woven fabrics 111, the vertical width dimension of preceding separation blade 8 is greater than the vertical width dimension of back separation blade 9, sets up back separation blade 9 at front waist region 101, and front separation blade 8 covers in the vertical one side of first guiding gutter 401, third guiding gutter 403, can further prevent urine from spilling over from guiding gutter longitudinal one side, reinforcing panty-shape diapers has promoted the leak protection flange and has improved the leak protection effect that the whole water-proof nature of the separation blade is connected with the first leak protection flange in the course, the whole waterproof separation blade has been guaranteed to the activity.
Further, the average gram weight of the first polymer water absorbent resin particles of the first absorbent material layer 126 is smaller than that of the second polymer water absorbent resin particles of the second absorbent material layer 127, and the differential design enables different absorbent layers to play different roles when absorbing urine, the first absorbent material layer 126 can rapidly absorb and primarily disperse urine, the second absorbent material layer 127 has stronger absorption and water locking capacity by virtue of the higher gram weight of the polymer water absorbent resin particles, can better cope with a large amount of urine, improves the overall absorption efficiency and absorption capacity, reasonably distributes the resources of the absorbent layers, and optimizes the absorption performance.
Further, the water absorption of the second absorbing material layer 127 is reduced stepwise from the middle part of the diaper body 1 to the two ends, so as to meet the distribution rule of urine on the diaper, the middle part of the diaper is usually the area where the urine contacts first and the amount is large, the higher water absorption is arranged to quickly absorb a large amount of urine, the water absorption to the two ends is gradually reduced, the uniformity of integral absorption can be ensured, the absorbing layer material can be reasonably utilized, the waste of the material is avoided, and the use efficiency and the economical efficiency of the diaper are improved.
Referring to fig. 5, a method for manufacturing a high diffusion diaper for babies includes the steps of:
1. preparing a liquid impermeable back sheet 13;
2. Preparation of absorbent core layer 12:
1) Unreeling and conveying the bulk nonwoven fabric in a roll shape, wherein the direction along which the bulk nonwoven fabric 123 is conveyed is defined as a longitudinal direction, and the direction along the width of the bulk nonwoven fabric 123 is defined as a transverse direction;
2) Applying second polymer water-absorbent resin particles on the lower surface of the bulk non-woven fabric 123 through a blanking roller 600, wherein a storage tank 601 for storing the second polymer water-absorbent resin particles is arranged on the blanking roller 600, and raised strips 602 are convexly arranged in the storage tank 601;
3) Unreeling and conveying the bottom layer non-woven fabric 124 in a roll shape, and compounding the bottom layer non-woven fabric 124 on the product in the step 2);
4) Sequentially applying first high molecular water-absorbent resin particles and first wood pulp fibers on the upper surface of the lofty nonwoven fabric 123;
5) Unreeling the intermediate nonwoven 122 in roll form and conforming it to the article of step 4):
6) Welding and fixing the middle non-woven fabric 122, the bulk non-woven fabric 123 and the bottom non-woven fabric 124 along the region where the first and second polymer water absorbent resin particles are not applied by the ultrasonic welding device;
7) Applying a layer of wood pulp fibers to the upper surface of the article of step 6) to form a wood pulp fiber layer 125;
8) Unreeling and conveying the top layer non-woven fabric 121 in a roll shape, and compounding the top layer non-woven fabric 121 on the product in the step 7);
3. Preparation of liquid-permeable topsheet 11:
9) Unreeling and conveying the hydrophilic non-woven fabric 111 in a roll shape;
10 Unreeling and conveying the roll-shaped hydrophobic non-woven fabric 112, and cutting the roll-shaped hydrophobic non-woven fabric to form a left hydrophobic non-woven fabric and a right hydrophobic non-woven fabric;
11 A first elastic rubber band 6 and a second elastic rubber band 7 are respectively compounded on the left hydrophobic non-woven fabric and the right hydrophobic non-woven fabric;
12 The left hydrophobic non-woven fabric and the right hydrophobic non-woven fabric are respectively folded through the folding plate to form a first leakage-proof flange 4 and a second leakage-proof flange 5;
4. The liquid-impermeable bottom layer 13, the absorbent core layer 12 and the liquid-permeable surface layer 11 are laminated and compositely connected in sequence from bottom to top;
5. And (3) slitting the product obtained in the step four to form a single paper diaper body.
The preparation method of the high-diffusion baby diaper adopts the unreeling and conveying mode of the rolled material for production, the steps are tightly connected, continuous production can be realized, the production mode greatly improves the production efficiency, reduces the production cost, is beneficial to large-scale industrial production, and can ensure the stability and consistency of the product quality by accurately controlling the technological parameters of unreeling, applying, compounding, welding and the like of the material in the steps.
In this example, the absorbent core layer 12 has a specific penetration measured at a pressure of 5.2KPa of no more than 15mL/g.
Referring to fig. 6, the instrument is prepared:
balance with 0.01g precision;
a tester 501 having an upper panel 502 and a lower panel 503, an edge of the upper panel 502 being hingedly connected to an edge of the lower panel 503:
funnel 504:150ml;
Measuring cylinder 100mL and 10mL;
stainless steel clip 505;
Beaker 500mL;
the pressing block 506 has the diameter of 100mm and the mass of 5.2+/-0.002 kg;
Stopwatch accuracy 0.01s;
0.9% sodium chloride solution 1000mL distilled water was added to a solution of 9.0g sodium chloride.
The detection step comprises:
a. Preparing 7 absorption core layers as samples, removing the maximum value and the minimum value in 7 test results after testing, taking the arithmetic average value of the rest 5 absorption core layers as the final test result, and accurately obtaining 1mL;
b. Measuring the mass m of each sample by a balance;
c. Firstly placing the tester at a horizontal position, adjusting the angle between the upper panel and the lower panel to be 30 degrees plus or minus 2 degrees, adjusting the lower opening of the funnel to enable the projection of the center of the lower opening to be 200 plus or minus 2mm away from the lower edge of the inclined panel of the tester, pouring a proper amount of test solution into the funnel, wetting the funnel, and wetting the funnel twice by using the test solution;
d. Taking one sample to be tested, flatly placing the sample on an inclined panel of a tester, using a surface facing upwards, taking 100mm from two ends of a central point of the sample respectively as test areas above the inclined panel, folding back the longer parts towards the upper part and the bottom of the inclined panel respectively, fixing the sample by using four stainless steel clamps, ensuring that the stainless steel clamps cannot obstruct the flow of the solution, placing a pressing block in the middle area of the upper surface of the sample, adjusting the height of a funnel to ensure that the lowest end of a lower opening is 8mm from the surface of the sample, placing a beaker under the tester, and collecting the solution left after the sample is permeated;
e. Accurately measuring the test solution by using a measuring cylinder, pouring the test solution into an adjusted funnel, quickly opening a funnel adjusting door to the maximum, enabling the solution to freely flow on the surface of a sample and flow downwards into a beaker along an inclined plane, closing the funnel adjusting door after the solution flows out, wiping the lower opening of the funnel to enable the lower opening of the funnel to be free of the solution, measuring the solution n in the beaker by using the measuring cylinder, and taking another strip for retesting if the test solution flows away from the side surface of the sample;
f. unit permeation amount (m/g) = (solution amount n in beaker)/(mass m of sample).
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, directly connected, indirectly connected via an intermediate medium, or in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1.一种高扩散婴儿纸尿裤，其特征在于：包括纸尿裤本体，定义沿纸尿裤本体的长度方向延伸为纵向方向，沿纸尿裤本体的宽度方向延伸为横向方向，所述纸尿裤本体包括从上到下依次层叠设置的透液性面层、吸收芯层以及不透液性底层，所述纸尿裤本体具有沿纵向方向分布的前腰区、后腰区以及分布于前腰区和后腰区之间的裆部区，所述吸收芯层具有位于横向中轴线的横向一侧的第一吸收区和位于横向中轴线的横向另一侧的第二吸收区，所述吸收芯层具有分布于纵向两端的上边缘、下边缘以及分布于横向两端的左边缘、右边缘；1. A high-diffusion infant diaper, characterized in that it comprises a diaper body, wherein the longitudinal direction extending along the length of the diaper body is defined as a longitudinal direction, and the transverse direction extending along the width of the diaper body is defined as a transverse direction. The diaper body comprises a liquid-permeable top layer, an absorbent core layer, and a liquid-impermeable bottom layer stacked in sequence from top to bottom. The diaper body comprises a front waist region and a rear waist region distributed in the longitudinal direction, and a crotch region distributed between the front waist region and the rear waist region. The absorbent core layer comprises a first absorbent region located on one transverse side of a transverse central axis and a second absorbent region located on the other transverse side of the transverse central axis. The absorbent core layer comprises an upper edge and a lower edge distributed at both longitudinal ends, and a left edge and a right edge distributed at both transverse ends. 所述吸收芯层包括顶层无纺布、中间无纺布、膨松无纺布、底层无纺布、木浆纤维层、第一吸收材料层以及第二吸收材料层，所述第一吸收材料层包括第一高分子吸水树脂颗粒和第一木浆纤维，所述第二吸收材料层包括第二高分子吸水树脂颗粒，所述第二吸收材料层设于膨松无纺布与底层无纺布之间，且第二吸收材料层上的部分第二高分子吸水树脂颗粒嵌设于膨松无纺布的孔隙内，所述第一吸收材料层设于膨松无纺布与中间无纺布之间，且第一吸收材料层上的部分第一高分子吸水树脂颗粒嵌设于膨松无纺布的孔隙内，另一部分第一高分子吸水树脂颗粒与第一木浆纤维混合分布于膨松无纺布的上表面上，所述第一吸收材料层的第一高分子吸水树脂颗粒的平均克重和第二吸收材料层的第二高分子吸水树脂颗粒的平均克重均为0.5g/m²～35g/m²,所述第一吸收材料层的第一高分子吸水树脂颗粒的平均克重小于第二吸收材料层的第二高分子吸水树脂颗粒的平均克重；The absorbent core layer includes a top non-woven fabric, a middle non-woven fabric, a bulky non-woven fabric, a bottom non-woven fabric, a wood pulp fiber layer, a first absorbent material layer, and a second absorbent material layer. The first absorbent material layer includes first high-molecular water-absorbing resin particles and first wood pulp fibers. The second absorbent material layer includes second high-molecular water-absorbing resin particles. The second absorbent material layer is arranged between the bulky non-woven fabric and the bottom non-woven fabric, and part of the second high-molecular water-absorbing resin particles on the second absorbent material layer is embedded in the pores of the bulky non-woven fabric. The first absorbent material layer is arranged between the bulky non-woven fabric and the middle non-woven fabric. Part of the first polymer water-absorbing resin particles on the first absorbent material layer are embedded in the pores of the bulky non-woven fabric, and another part of the first polymer water-absorbing resin particles are mixed with the first wood pulp fibers and distributed on the upper surface of the bulky non-woven fabric. The average gram weight of the first polymer water-absorbing resin particles in the first absorbent material layer and the average gram weight of the second polymer water-absorbing resin particles in the second absorbent material layer are both 0.5 g/m² to 35 g/m², and the average gram weight of the first polymer water-absorbing resin particles in the first absorbent material layer is less than the average gram weight of the second polymer water-absorbing resin particles in the second absorbent material layer. 所述膨松无纺布的第一吸收区沿纵向方向设有不含第一高分子吸水树脂颗粒和第二高分子吸水树脂颗粒的第一导流区和第二导流区，所述第一导流区的纵向中部与第二导流区的纵向中部重合，所述膨松无纺布的第二吸收区沿纵向方向设有不含第一高分子吸水树脂颗粒和第二高分子吸水树脂颗粒的第三导流区和第四导流区，所述第三导流区的纵向中部与第四导流区的纵向中部重合，所述中间无纺布、膨松无纺布以及底层无纺布于第一导流区、第二导流区、第三导流区和第四导流区处复合连接，当第一高分子吸水树脂颗粒和第二高分子吸水树脂颗粒溶胀时，第一吸收区的第一导流区和第二导流区形成第一导流槽和第二导流槽，第二吸收区的第三导流区和第三导流区形成第三导流槽和第四导流槽，所述木浆纤维层铺设于中间无纺布的上表面，所述顶层无纺布复合于木浆纤维层的上表面，所述吸收芯层具有在5.2KPa的压力下测得的单位渗透量不大于15mL/g。The first absorption zone of the bulky nonwoven fabric is provided with a first guide zone and a second guide zone along the longitudinal direction, which do not contain the first high molecular water-absorbing resin particles and the second high molecular water-absorbing resin particles. The longitudinal middle of the first guide zone coincides with the longitudinal middle of the second guide zone. The second absorption zone of the bulky nonwoven fabric is provided with a third guide zone and a fourth guide zone along the longitudinal direction, which do not contain the first high molecular water-absorbing resin particles and the second high molecular water-absorbing resin particles. The longitudinal middle of the third guide zone coincides with the longitudinal middle of the fourth guide zone. The middle nonwoven fabric, the bulky nonwoven fabric and the bottom nonwoven fabric are provided at the first guide zone. The flow area, the second guide area, the third guide area and the fourth guide area are compositely connected. When the first high molecular water-absorbent resin particles and the second high molecular water-absorbent resin particles swell, the first guide area and the second guide area of the first absorption area form a first guide groove and a second guide groove, and the third guide area and the third guide area of the second absorption area form a third guide groove and a fourth guide groove. The wood pulp fiber layer is laid on the upper surface of the middle non-woven fabric, and the top non-woven fabric is composited with the upper surface of the wood pulp fiber layer. The absorption core layer has a unit permeability measured under a pressure of 5.2KPa that is not greater than 15mL/g. 2.根据权利要求1所述的高扩散婴儿纸尿裤，其特征在于：所述第二导流槽分布于第一导流槽的横向外侧，所述第一导流槽的纵向两端不于上边缘和下边缘连接，所述第二导流槽呈弧形结构，所述第二导流槽的纵向两端分别与左边缘连接，所述第四导流槽分布于第三导流槽的横向外侧，所述第三导流槽的纵向两端不于上边缘和下边缘连接，所述第四导流槽呈弧形结构，所述第四导流槽的纵向两端分别与右边缘连接。2. The high-diffusion baby diaper according to claim 1 is characterized in that: the second guide groove is distributed on the lateral outside of the first guide groove, the longitudinal ends of the first guide groove are not connected to the upper edge and the lower edge, the second guide groove has an arc-shaped structure, and the longitudinal ends of the second guide groove are respectively connected to the left edge, the fourth guide groove is distributed on the lateral outside of the third guide groove, the longitudinal ends of the third guide groove are not connected to the upper edge and the lower edge, the fourth guide groove has an arc-shaped structure, and the longitudinal ends of the fourth guide groove are respectively connected to the right edge. 3.根据权利要求2所述的高扩散婴儿纸尿裤，其特征在于：所述第一导流槽、第三导流槽的纵向两端分别延伸至前腰区和后腰区内。3. The high-diffusion baby diaper according to claim 2, wherein the longitudinal ends of the first guide groove and the third guide groove extend into the front waist region and the back waist region respectively. 4.根据权利要求3所述的高扩散婴儿纸尿裤，其特征在于：所述第二导流槽、第四导流槽分布于裆部区。4. The high-diffusion baby diaper according to claim 3, wherein the second guide groove and the fourth guide groove are distributed in the crotch area. 5.根据权利要求1至4任一权利要求所述的高扩散婴儿纸尿裤，其特征在于：所述透液性面层包括亲水无纺布以及分布固设于亲水无纺布横向两侧的疏水无纺布，所述亲水无纺布粘附于吸收芯层的上表面以及吸收芯层的横向两侧面上，且与吸收芯层粘附在不透液性底层上，所述疏水无纺布的横向外侧通过折叠形成第一防漏挡边和第二防漏挡边，所述第二防漏挡边分布于第一防漏挡边的横向外侧，所述第二防漏挡边高度尺寸大于第一防漏挡边的高度尺寸，所述第一防漏挡边的自由端内嵌有第一弹性橡筋，所述第二防漏挡边的自由端内嵌有第二弹性橡筋。5. The high-diffusion baby diaper according to any one of claims 1 to 4 is characterized in that: the liquid-permeable surface layer includes a hydrophilic non-woven fabric and a hydrophobic non-woven fabric distributed and fixed on both lateral sides of the hydrophilic non-woven fabric, the hydrophilic non-woven fabric is adhered to the upper surface of the absorbent core layer and the lateral sides of the absorbent core layer, and is adhered to the liquid-impermeable bottom layer together with the absorbent core layer, the lateral outer side of the hydrophobic non-woven fabric is folded to form a first leak-proof edge and a second leak-proof edge, the second leak-proof edge is distributed on the lateral outer side of the first leak-proof edge, the height dimension of the second leak-proof edge is greater than the height dimension of the first leak-proof edge, the free end of the first leak-proof edge is embedded with a first elastic rubber band, and the free end of the second leak-proof edge is embedded with a second elastic rubber band. 6.根据权利要求5所述的高扩散婴儿纸尿裤，其特征在于：所述第一防漏挡边的高度尺寸为2～3cm，第二防漏挡边的高度尺寸为4～6cm。6 . The high-diffusion baby diaper according to claim 5 , wherein the height of the first leak-proof rib is 2 to 3 cm, and the height of the second leak-proof rib is 4 to 6 cm. 7.根据权利要求6所述的高扩散婴儿纸尿裤，其特征在于：所述纸尿裤本体的前腰区设有前挡片，所述前挡片的横向两侧边分别复合于第一防漏挡边的上表面上，所述前挡片的纵向外侧边复合于亲水无纺布的上表面上，所述前挡片覆盖于第一导流槽、第三导流槽的纵向一侧，所述纸尿裤本体的前腰区设有后挡片，所述后挡片的横向两侧边分别复合于第一防漏挡边的上表面上，所述后挡片的纵向外侧边复合于亲水无纺布的上表面上。7. The high-diffusion baby diaper according to claim 6 is characterized in that: a front baffle is provided in the front waist area of the diaper body, the two lateral sides of the front baffle are respectively compounded on the upper surface of the first leak-proof rib, the longitudinal outer side of the front baffle is compounded on the upper surface of the hydrophilic non-woven fabric, the front baffle covers the longitudinal side of the first guide groove and the third guide groove, and a rear baffle is provided in the front waist area of the diaper body, the two lateral sides of the rear baffle are respectively compounded on the upper surface of the first leak-proof rib, and the longitudinal outer side of the rear baffle is compounded on the upper surface of the hydrophilic non-woven fabric. 8.根据权利要求7所述的高扩散婴儿纸尿裤，其特征在于：所述第二吸收材料层的吸水量由纸尿裤本体的纵向中部向纵向两端呈阶梯性减少。8. The high-diffusion baby diaper according to claim 7, wherein the water absorption capacity of the second absorbent material layer decreases stepwise from the longitudinal middle portion to the longitudinal ends of the diaper body. 9.一种如权利要求1所述的高扩散婴儿纸尿裤的制备方法，其特征在于：包括以下步骤：9. A method for preparing the high-diffusion baby diaper according to claim 1, characterized in that it comprises the following steps: 一、制备不透液性底层；1. Prepare a liquid-impermeable base layer; 二、制备吸收芯层：2. Preparation of absorbent core layer: 1）将呈卷状的膨松无纺布放卷输送，定义沿膨松无纺布的输送方向延伸为纵向方向，沿膨松无纺布的宽度方向延伸为横向方向；1) The rolled bulky non-woven fabric is unrolled and transported, with the longitudinal direction extending along the transport direction of the bulky non-woven fabric being defined as the longitudinal direction, and the transverse direction extending along the width direction of the bulky non-woven fabric being defined as the transverse direction; 2）在膨松无纺布的下表面通过下料辊施加第二高分子吸水树脂颗粒，所述下料辊上具有储存第二高分子吸水树脂颗粒的储料槽，所述储料槽内凸设有凸条；2) applying second polymer water-absorbing resin particles to the lower surface of the bulky non-woven fabric via a feed roller, wherein the feed roller has a storage groove for storing the second polymer water-absorbing resin particles, and the storage groove is provided with convex strips; 3）将呈卷状的底层无纺布放卷输送，并将其复合于步骤2）的制品上；3) unwinding the rolled bottom nonwoven fabric and conveying it, and laminating it to the product in step 2); 4）在膨松无纺布的上表面通过依次施加第一高分子吸水树脂颗粒和第一木浆纤维；4) applying first polymer water-absorbing resin particles and first wood pulp fibers in sequence to the upper surface of the bulky nonwoven fabric; 5）将呈卷状的中间无纺布放卷，并将其符合于步骤4）的制品上：5) Unwind the rolled intermediate non-woven fabric and place it on the product from step 4): 6）通过超声波焊接装置将中间无纺布、膨松无纺布和底层无纺布沿未施加第一高分子吸水树脂颗粒和第二高分子吸水树脂颗粒的区域焊接固定；6) welding the middle non-woven fabric, the bulky non-woven fabric, and the bottom non-woven fabric along the area where the first polymer water-absorbing resin particles and the second polymer water-absorbing resin particles are not applied using an ultrasonic welding device; 7）在步骤6）的制品的上表面施加一层木浆纤维；7) applying a layer of wood pulp fibers to the upper surface of the article of step 6); 8）将呈卷状的顶层无纺布放卷输送，并将其复合于步骤7）的制品上；8) unwinding the rolled top nonwoven fabric and laminating it onto the product from step 7); 三、制备透液性面层：3. Preparation of liquid-permeable surface layer: 9）将呈卷状的亲水无纺布放卷输送；9) Unrolling and conveying the rolled hydrophilic nonwoven fabric; 10）将呈卷状的疏水无纺布放卷输送，并将其分切形成左疏水无纺布和右疏水无纺布；10) unwinding the rolled hydrophobic non-woven fabric and conveying it, and cutting it into a left hydrophobic non-woven fabric and a right hydrophobic non-woven fabric; 11）将第一弹性橡筋、第二弹性橡筋分别复合于左疏水无纺布和右疏水无纺布上；11) Laminating the first elastic band and the second elastic band to the left hydrophobic non-woven fabric and the right hydrophobic non-woven fabric respectively; 12）通过折叠板分别对左疏水无纺布和右疏水无纺布进行折叠，形成第一防漏挡边和第二防漏挡边；12) Folding the left hydrophobic non-woven fabric and the right hydrophobic non-woven fabric respectively using a folding plate to form a first leak-proof rib and a second leak-proof rib; 四、不透液性底层、吸收芯层和透液性面层从下到上依次层叠复合连接；4. The liquid-impermeable bottom layer, the absorbent core layer and the liquid-permeable surface layer are laminated and connected in sequence from bottom to top; 五、将步骤四的制品分切，形成单个的纸尿裤本体。5. Cut the product from step 4 into individual diaper bodies.
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