CA2138680A1 - Method and apparatus for the zoned placement of superabsorbent material - Google Patents

Method and apparatus for the zoned placement of superabsorbent material

Info

Publication number
CA2138680A1
CA2138680A1 CA002138680A CA2138680A CA2138680A1 CA 2138680 A1 CA2138680 A1 CA 2138680A1 CA 002138680 A CA002138680 A CA 002138680A CA 2138680 A CA2138680 A CA 2138680A CA 2138680 A1 CA2138680 A1 CA 2138680A1
Authority
CA
Canada
Prior art keywords
carrier layer
pattern
pocket regions
layer
provides
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002138680A
Other languages
French (fr)
Other versions
CA2138680C (en
Inventor
Mark Gordon Heath
John Timothy Hahn
Lorry Francis Sallee
Joseph Andrew Mlinar
Thomas Michael Killian
Thomas George Olsen
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.)
Kimberly Clark Worldwide Inc
Original Assignee
Kimberly Clark Corp
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 Kimberly Clark Corp filed Critical Kimberly Clark Corp
Publication of CA2138680A1 publication Critical patent/CA2138680A1/en
Application granted granted Critical
Publication of CA2138680C publication Critical patent/CA2138680C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • A61F13/53—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
    • A61F13/531—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 a homogeneous composition through the thickness of the pad
    • A61F13/532—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 a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/5323—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 a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having absorbent material located in discrete regions, e.g. pockets
    • 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
    • A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
    • A61F13/15658—Forming continuous, e.g. composite, fibrous webs, e.g. involving the application of pulverulent material on parts thereof

Abstract

The present invention provides an apparatus and method for forming a composite web having selected discrete pocket regions which are distributed on a carrier layer and contain high-absorbency material. The invention includes a pattern chamber having opposed side walls, an entrance end wall and an exit end wall. A particulate supplying mechanism provides particles of high-absorbency material into the pattern chamber, and a web supplying mechanism provides a gas permeable carrier layer. A foraminous forming mechanism moves the carrier layer through the pattern chamber, and the forming mechanism includes a pattern of openings which are formed therethrough and are arranged to provide for a selected pattern of the discrete pocket regions. A vacuum supplying mechanism provides a selected level of relatively low gas pressure at an underside region of the forming mechanism to produce a selected gas-flow through the carrier layer and the foraminous forming mechanism to form the pocket regions. A covering mechanism provides a layer of liquid-permeable covering material to sandwich said pocket regions of high-absorbency material between said carrier layer and said covering layer.
CA002138680A 1994-07-12 1994-12-21 Method and apparatus for the zoned placement of superabsorbent material Expired - Fee Related CA2138680C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US274,172 1994-07-12
US08/274,172 US5494622A (en) 1994-07-12 1994-07-12 Apparatus and method for the zoned placement of superabsorbent material

Publications (2)

Publication Number Publication Date
CA2138680A1 true CA2138680A1 (en) 1996-01-13
CA2138680C CA2138680C (en) 2005-02-08

Family

ID=23047092

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002138680A Expired - Fee Related CA2138680C (en) 1994-07-12 1994-12-21 Method and apparatus for the zoned placement of superabsorbent material

Country Status (2)

Country Link
US (1) US5494622A (en)
CA (1) CA2138680C (en)

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