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US3667468A - Sanitary napkin and method and means of producing - Google Patents

Sanitary napkin and method and means of producing Download PDF

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Publication number
US3667468A
US3667468A US3667468DA US3667468A US 3667468 A US3667468 A US 3667468A US 3667468D A US3667468D A US 3667468DA US 3667468 A US3667468 A US 3667468A
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Prior art keywords
layers
pad
napkin
carrier
interior
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Ernst Daniel Nystrand
Brian H Mcintosh
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Paper Converting Machine Co
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Paper Converting Machine Co
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form ; Layered products having particular features of form
    • B32B3/26Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form ; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form ; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577Apparatus or processes for manufacturing
    • A61F13/15617Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
    • A61F13/15634Making fibrous pads between sheets or webs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/53409Absorbent 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 having a folded core
    • A61F13/53418Absorbent 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 having a folded core having a C-folded cross-section
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • AHUMAN NECESSITIES
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    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/53409Absorbent 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 having a folded core
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/537Absorbent 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56Supporting or fastening means
    • A61F13/58Adhesive tab fastener elements
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577Apparatus or processes for manufacturing
    • A61F2013/15821Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent 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
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F2013/49068Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the shape of the outline
    • A61F2013/49076Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the shape of the outline as “I”-shaped
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51Absorbent 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 outer layers
    • A61F13/514Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • A61F2013/51409Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F2013/530131Absorbent 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F2013/53445Absorbent 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 from several sheets
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/537Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F2013/53765Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry
    • A61F2013/53786Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry with folds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56Supporting or fastening means
    • A61F13/58Adhesive tab fastener elements
    • A61F2013/586Adhesive tab fastener elements on lateral flaps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/726Permeability to liquids, absorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/726Permeability to liquids, absorption
    • B32B2307/7265Non-permeable
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B32B2555/00Personal care
    • B32B2555/02Diapers or napkins
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1002Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007Running or continuous length work
    • Y10T156/1008Longitudinal bending
    • Y10T156/101Prior to or during assembly with additional lamina
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1002Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007Running or continuous length work
    • Y10T156/1008Longitudinal bending
    • Y10T156/1011Overedge bending or overedge folding
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1002Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007Running or continuous length work
    • Y10T156/1015Folding
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1002Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1028Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith
    • Y10T156/103Encasing or enveloping the configured lamina
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1002Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1051Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by folding
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1052Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1056Perforating lamina
    • Y10T156/1057Subsequent to assembly of laminae

Abstract

A sanitary napkin which has a fluff layer sandwiched between carrier layers, the sandwich being C-folded to provide a lined channel on one side of the sandwich which encourages more even, rapid, and complete dispersion of body fluids.

Description

[ 1 June 6, 1972 Unite States Patent Nystrand et a1.

[54] SANITARY NAPKIN AND METHOD AND ...128/284 128/287 Cooper.................-...............,.128/287 3,356,092 12/1967 MEANS F PRODUCING 3,364,931 1/1968 l-lirsch........... ....128/290 R 3,407,814 10/1968 George et al...... 128/290 R [72] Inventors: Ernst Daniel Nystrand; Brian H. Mcln- 3,430,629 3/1969 Mur hy both of Green y 3,441,023 4/1969 Rijssenbeer.... [73] Assignee: Paper Converting Machine Company, Inc., l 5676 4/1967 Green Bay, Wis.

Apr. 28, 1970 Primary Examiner-Charles F. Rosenbaum [22] Filed:

Attorney-Dawson, Tilton, Fallon, Lungmus [57] ABSTRACT A sanitary napkin which has a fluff layer sandwiched between carrier layers, the sandwich being C-folded to provide a lined channel on one side of the sandwich which encourages more even, rapid, and complete dispersion of body fluids.

211 App1.No.: 32,560

[52] U S Cl [51] Int. [58] Field ofSearch 4 m 4 wewi sfisqrs References Cited UNITED STATES PATENTS 2,852,026 Karr................,..................128/290 R PATENTEDJUI BIEWE 3,667,468

SHEET 1 or 2 .',-\"\/E.-\"7'0RS.' ERNST DANIEL NYSTRAND BRIAN H. MCINTOSH BY; 0 QZZ PATENTED 5 I97? SHEET 2 0F 2 fix , hWE/WQRS; ERNST DANIEL NYSTRAND BRIAN H. MCINTOSH avflawgm fltm alfr SANITARY NAPKIN AND METHOD AND MEANS OF PRODUCING BACKGROUND AND SUMMARY OF INVENTION DETAIL DESCRIPTION OF INVENTION The invention is described in conjunction with the accompanying drawings, in which:

FIG. 1 is a perspective view partially broken away of a sanitary napkin produced according to the teachings of this invention; and

FIG. 2 is a perspective view also broken away to illustrate I the type of diaper insert produceable according to the invention.

In the illustration given, and with reference to FIG. I, the numeral designates generally-a sanitary napkin produced and constructed according to the teachings of this invention. It will be noted that the core of the napkin is a fluff layer 11 which has been folded on itself into a C configuration. Adjacent the bight portion 12 of the C configuration is positioned a barrier sheet 13, advantageously polyethylene. The width of the barrier sheet 13 is less than that of the unfolded fluff layer 11. The fluff layer 11 and barrier sheet 13 are enclosed within a carrier web 14 which, before C-folding, makes up a sandencourages more even, rapid, and complete dispersion of body fluids. The C-fold channel Ch (still referring to FIG. I) orients the body fluid dispersion path along the length of the napkin, and discourages over-saturation in one central area, Thus, the non-woven overwrap 16 in contact with the body tends to remain drier. Further, the construction depicted resists strike through" better than conventional two-ply napkins. By virtue of the C-fold construction, there is a compression of the various layers along the longitudinal edges which inhibits lateral leakage.

In FIG. 2, we provide an outer wrap 116 which envelops the carrier web 1 14, which in turn sandwiches the fluff layer 1 l I.

We claim:

1. A sanitary napkin comprising a plurality of elongated layers of flexible material arranged to lay flat including upper and lower exterior layers constructed of non-woven material and serving to confine a plurality of interior layers, two interior layers constructed of soft absorbable material and being relatively thicker than the other layers, said two interior layers being united along the longitudinal edges thereof with one of the interior layers having an access space along the longitudinal median whereby said two interior layers have essentially a C configuration in transverse section to provide a channel for dispersion of fluid, a pair of intermediate layers of absorbent material, one of the intermediate layers being interposed between the upper exterior layer and one of the interior layers and the other intermediate layer being interposed between the other interior layer and the lower exterior layer, and a pair of inner layers of absorbent material interposed between the two interior layers.

2. A sanitary napkin comprising an elongated pad of soft moisture-absorbent material, a carrier web of moisture-absorwich with the carrier web 14 providing the external layers and the fluff 11 providing the inner player. It will be noted by reference to FIG. 1 that the carrier web is overlapped on itself as at 15. Lastly, the C-folded sandwich is positioned within an enveloping outer wrap 16. This is overlapped on itself and longitudinally sealed together as at 17,

Thus we provide a single ply cellulose fluff pad overwrapped completely with a porous tissue carrier web. The narrower strip of polyethylene 13 introduced next to the fluff under the carrier web flaps acts as a barrier sheet on the finished napkin. The entire pad and carrier web are C-folded to form a modified two-ply construction with a longitudinally extending center channel. The entire Cfolded fluff pad and carrier web are overwrapped, as at 16, advantageously with non-woven material or wet strength tissue, and longitudinally sealed, as at 17, with a hot melt adhesive seam.

In operation, the C-fold construction with internal dispersion layers, i.e., the internal carrier webs, as at 14a and 14b,

bent material surrounding the pad, the pad and the carrier web being folded into a C-shape along a pair of spaced'apart parallel longitudinally extending lines to provide a lower pad portion and a pair of upper pad portions superposed on the lower pad portion to form a longitudinally extending channel, the upper pad portions and the lower portion being of approximately the same thickness, the upper pad portions. being separated from the lower pad poition by a double thickness of the carrier web, and an outer wrap surrounding the C-folded pad and carrier web and extending across said channel.

3. The napkin of claim 11 in which each of the upper pad portions includes a longitudinally extendinginwardly facing longitudinal edge spaced from the longitudinal edge of the other pad portion to provide a relatively narrow longitudinally extending access slot for the channel.

4. The napkin of claim 3 in which the width of said slot is substantially smaller than the width of each of said upper pad portions.

UNITED STATES PATENT OFFiCE CERTIFICATE OF CORRECTIUN P ent No. 3,667,468 J Dated June 6, 1972 Inventor(s) Ernst Daniel Nystra'nd, at. al.

It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

The title of the invention should read SANITARY NAPKIN On the cover sheet [57] "4 Claims, 4 Drawing Figures should read 4 Claims, 2 Drawing Figures Cancel the sheet of drawing containing Figs. 3 and 4; The numeral 148" in FIG. .lshould be canceled. Column 2, line 43-, "11'' should read 2 Signed and sealed this 26th 'dayofDecember 1972 I (SEAL) I Attest:

EDWARD,M.FLETCHER,JR. ROBERT GOTTSCHALK Attesting Officer i p Commissionr of Patents FORM Do-1050 H0769) USCOMM-DC 60376-1 69 9 U.5, GOVERNMENT PRINTING OFFICE: I959 O-3fi6334.

Claims (4)

1. A sanitary napkin comprising a plurality of elongated layers of flexible material arranged to lay flat including upper and lower exterior layers constructed of non-woven material and serving to confine a plurality of interior layers, two interior layers constructed of soft absorbable material and being relatively thicker than the other layers, said two interior layers being united along the longitudinal edges thereof with one of the interior layers having an access space along the longitudinal median whereby said two interior layers have essentially a C configuration in transverse section to provide a channel for dispersion of fluid, a pair of intermediate layers of absorbent material, one of the intermediate layers being interposed between the upper exterior layer and one of the interior layers and the other intermediate layer being interposed between the other interior layer and the lower exterior layer, and a pair of inner layers of absorbent material interposed between the two interior layers.
2. A sanitary napkin comprising an elongated pad of soft moisture-absorbent material, a carrier web of moisture-absorbent material surrounding the pad, the pad and the carrier web being folded into a C-shape along a pair of spaced-apart parallel longitudinally extending lines to provide a lower pad portion and a pair of upper pad portions superposed on the lower pad portion to form a longitudinally extending channel, the upper pad portions and the lower portion being of approximately the same thickness, the upper pad portions being separated from the lower pad portion by a double thickness of the carrier web, and an outer wrap surrounding the C-folded pad and carrier web and extending across said channel.
3. The napkin of claim 11 in which each of the upper pad portions includes a longitudinally extending inwardly facing longitudinal edge spaced from the longitudinal edge of the other pad portion to provide a relatively narrow longitudinally extending access slot for the channel.
4. The napkin of claim 3 in which the width of said slot is substantially smaller than the width of each of said upper pad portions.
US3667468A 1970-04-28 1970-04-28 Sanitary napkin and method and means of producing Expired - Lifetime US3667468A (en)

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US3256070 true 1970-04-28 1970-04-28
US21376871 true 1971-12-29 1971-12-29
US3814100A US3814100A (en) 1970-04-28 1972-03-01 Disposable diaper

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US3746592A Expired - Lifetime US3746592A (en) 1970-04-28 1971-12-29 Method of producing sanitary napkins
US3814100A Expired - Lifetime US3814100A (en) 1970-04-28 1972-03-01 Disposable diaper

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US3746592A Expired - Lifetime US3746592A (en) 1970-04-28 1971-12-29 Method of producing sanitary napkins
US3814100A Expired - Lifetime US3814100A (en) 1970-04-28 1972-03-01 Disposable diaper

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BE (1) BE765868A (en)
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DE (1) DE2112313B2 (en)
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GB (1) GB1313962A (en)

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US3771525A (en) * 1970-12-23 1973-11-13 Ruby Ets Sanitary napkin having compressed core
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US4029101A (en) * 1974-09-06 1977-06-14 Colgate-Palmolive Company Absorbent article
FR2433936A1 (en) * 1978-07-03 1980-03-21 Colgate Palmolive Co Body fluid absorbent towel - with absorbent base pad forming inverted tee slot for better sorptive capacity
US4883479A (en) * 1986-09-26 1989-11-28 Colgate-Palmolive Company Absorbent napkin, particularly for infant's diaper pads
US5423786A (en) * 1993-09-24 1995-06-13 Mcneil-Ppc, Inc. Stabilized absorbent core and products made therefrom
US5437653A (en) * 1993-05-12 1995-08-01 Kimberly-Clark Corporation Absorbent article having two coapertured layers and a method of making the article
US5454800A (en) * 1993-05-12 1995-10-03 Kimberly-Clark Corporation Absorbent article
USH1511H (en) * 1992-09-10 1995-12-05 Chappell; Charles W. Absorbent articles having improved longitudinal fluid movement
US5611879A (en) * 1987-12-18 1997-03-18 Kimberly-Clark Corporation Absorbent article having an absorbent with a variable density in the Z direction and a method of forming said article
US5675079A (en) * 1995-06-07 1997-10-07 Kimberly-Clark Worldwide, Inc. Apparatus for measuring the crush recovery of an absorbent article
US5803920A (en) * 1995-06-07 1998-09-08 Kimberly-Clark Worldwide, Inc. Thin absorbent article
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US6206865B1 (en) 1995-11-13 2001-03-27 Kimberly-Clark Worldwide, Inc. Absorbent article having a cellulosic transfer layer
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Cited By (27)

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Publication number Priority date Publication date Assignee Title
US3771525A (en) * 1970-12-23 1973-11-13 Ruby Ets Sanitary napkin having compressed core
US3838695A (en) * 1973-09-17 1974-10-01 Personal Products Co Flushable sanitary napkin
US3954107A (en) * 1974-09-06 1976-05-04 Colgate-Palmolive Company Articulated sanitary napkin pad
US4029101A (en) * 1974-09-06 1977-06-14 Colgate-Palmolive Company Absorbent article
FR2433936A1 (en) * 1978-07-03 1980-03-21 Colgate Palmolive Co Body fluid absorbent towel - with absorbent base pad forming inverted tee slot for better sorptive capacity
US4883479A (en) * 1986-09-26 1989-11-28 Colgate-Palmolive Company Absorbent napkin, particularly for infant's diaper pads
US5611879A (en) * 1987-12-18 1997-03-18 Kimberly-Clark Corporation Absorbent article having an absorbent with a variable density in the Z direction and a method of forming said article
USH1511H (en) * 1992-09-10 1995-12-05 Chappell; Charles W. Absorbent articles having improved longitudinal fluid movement
US5437653A (en) * 1993-05-12 1995-08-01 Kimberly-Clark Corporation Absorbent article having two coapertured layers and a method of making the article
US5454800A (en) * 1993-05-12 1995-10-03 Kimberly-Clark Corporation Absorbent article
US5423786A (en) * 1993-09-24 1995-06-13 Mcneil-Ppc, Inc. Stabilized absorbent core and products made therefrom
US5675079A (en) * 1995-06-07 1997-10-07 Kimberly-Clark Worldwide, Inc. Apparatus for measuring the crush recovery of an absorbent article
US5803920A (en) * 1995-06-07 1998-09-08 Kimberly-Clark Worldwide, Inc. Thin absorbent article
US5810798A (en) * 1995-06-30 1998-09-22 Kimberly-Clark Worldwide, Inc. Absorbent article having a thin, efficient absorbent core
US6206865B1 (en) 1995-11-13 2001-03-27 Kimberly-Clark Worldwide, Inc. Absorbent article having a cellulosic transfer layer
US6632209B1 (en) * 1998-03-30 2003-10-14 Paragon Trade Brands, Inc. Thin absorbent core made from folded absorbent laminate
US6348253B1 (en) 1999-04-03 2002-02-19 Kimberly-Clark Worldwide, Inc. Sanitary pad for variable flow management
US6534149B1 (en) 1999-04-03 2003-03-18 Kimberly-Clark Worldwide, Inc. Intake/distribution material for personal care products
US7264615B2 (en) 2001-04-03 2007-09-04 Kimberly-Clark Worldwide, Inc. Absorbent insert for use with an outer absorbent garment
US20030236512A1 (en) * 2002-06-19 2003-12-25 Baker Andrew A. Absorbent core with folding zones for absorbency distribution
US20040116884A1 (en) * 2002-09-30 2004-06-17 Takako Fujii Body fluid absorbing article
US7632979B2 (en) * 2002-09-30 2009-12-15 Daio Paper Corporation Absorbing article having honeycomb recesses on lower absorbent layer and varying layer densities
US6888044B2 (en) 2002-12-23 2005-05-03 Kimberly-Clark Worldwide, Inc. High capacity absorbent structure and method for producing same
US20040122394A1 (en) * 2002-12-23 2004-06-24 Kimberly-Clark Worldwide, Inc. High capacity absorbent structure and method for producing same
US20040127870A1 (en) * 2002-12-27 2004-07-01 Dipalma Joseph Thin curved elasticized absorbent article with absorbent concentration profile
US20060069375A1 (en) * 2004-09-29 2006-03-30 Andrew Waksmundzki Absorbent article with C-folded moisture barrier and methods of manufacturing same
US20070043330A1 (en) * 2005-08-19 2007-02-22 Lankhof John P Absorbent article

Also Published As

Publication number Publication date Type
GB1313962A (en) 1973-04-18 application
FR2090815A5 (en) 1972-01-14 application
US3746592A (en) 1973-07-17 grant
CA952256A (en) 1974-08-06 grant
DE2112313A1 (en) 1971-11-11 application
DE2112313B2 (en) 1976-02-12 application
BE765868A (en) 1971-09-16 grant
BE765868A1 (en) grant
US3814100A (en) 1974-06-04 grant
CA952256A1 (en) grant

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