IE48758B1 - Disposable product with hydrophobic anti wetback sheet - Google Patents

Disposable product with hydrophobic anti wetback sheet

Info

Publication number
IE48758B1
IE48758B1 IE1146/79A IE114679A IE48758B1 IE 48758 B1 IE48758 B1 IE 48758B1 IE 1146/79 A IE1146/79 A IE 1146/79A IE 114679 A IE114679 A IE 114679A IE 48758 B1 IE48758 B1 IE 48758B1
Authority
IE
Ireland
Prior art keywords
hydrophobic
wadding
wetback
disposable product
pad
Prior art date
Application number
IE1146/79A
Other versions
IE791146L (en
Original Assignee
Colgate Palmolive Co
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 Colgate Palmolive Co filed Critical Colgate Palmolive Co
Priority to IE3111/84A priority Critical patent/IE48759B1/en
Publication of IE791146L publication Critical patent/IE791146L/en
Publication of IE48758B1 publication Critical patent/IE48758B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F13/53743—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers
    • A61F13/53747—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers the layer is facing the topsheet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F13/53743—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers
    • A61F13/53756—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers the layer facing the back-sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2555/00—Personal care
    • B32B2555/02—Diapers or napkins

Landscapes

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

Abstract

Disposable product for example a diaper having a hydrophobic layer (12) formed of non-woven polyethylene or polypropylene fibres, a hydrophobic tissue wadding (16, 18) above and below, or preferably wrapped around, an absorbent pad (14) and a water-proof backing sheet (20) of plastic film secured at its edges (22) to the top layer (12).

Description

This invention relates to disposable products, such as diapers, sanitary pads, or underpads, and more particularly to a disposable product having a wet strength hydrophobic tissue wadding for preventing fluid wetback while maintaining the shape of the absorbent pad.
Disposable diapers having an absorbent pad formed of a core of wood fluff or: like material are well known. These pads have been used with and provided with a tissue wadding which, in the past, has been of highly fluid permeable and fluid absorbent material. Waddings have been used to wrap the absorbent pad, but the tissue wadding when wet looses strength and, in use, the pad often loses its shape and its absorbing qualities, and permits an unwanted degree of fluid wetback.
Attempts have been made to provide a barrier to the fluid wetback, such as the barrier layer shown in the patent to John Michael Hernandez, No. 3,987,792, for Disposable Diaper Having Improved Liquid Retention. However, the hydrophobic fibres of the barrier layer of this prior patent form a relatively thick resilient fibrous pad and because of the resistance to penetration by fluids which is present, a water pervious top layer having fluid feeding openings therein - 2 48798 must also be used.
The present invention overcomes the difficulties of the prior art and achieves the results desired by providing a disposable product including both a hydrophobic non-woven top sheet and a tissue wadding preferably a thin wadding e.g. a tissue thin wadding, which is wrapped about the absorbent pad so that the tissue wadding being of hydrophobic nature tends to retain its full strength even after fluid has passed into the absorbent pad and cooperated with the top sheet in preventing fluid wetback, thus providing a dry surface in contact with the skin of the user.
Accordingly, the primary object of the present invention is to provide a disposable diaper having means to retain the shape of the absorbent pad and which reduces fluid wetback.
Yet another object of the invention is to provide a disposable diaper which provides a high degree of resistance to fluid wetback yet does not require a thick barrier layer, thereby providing an increased amount of absorbing material while limiting the bulk and size of the diaper.
According to the present invention a disposable product comprises a hydrophobic top sheet formed of non-woven fibres of polyethylene or polypropylene or mixtures thereof, a hydrophobic wadding of a tissue formed of non-woven fibres of polyethylene or polypropylene or mixtures thereof, an absorbent pad, and a waterproof backing sheet, the said wadding being wrapped around the said absorbent pad holding the said pad together.
The invention may be put into practice in various ways and two specific embodiments will be described by way of example with reference to the accompanying drawings in which: - 3 58 Figure 1 is an exploded perspective view of an embodiment of a diaper constructed according to the present invention, with parts being broken away to show other parts in detail; Figure 2 is a vertical sectional view, taken along the plane of the line 2-2 in Figure 1 illustrating the invention with the tissue wadding wrapped about the pad.
Reference numeral 10 is used to generally designate a disposable diaper constructed in accordance with the present invention. The diaper comprises, in order, a top sheet 12 formed of non-woven hydrophobic fibres of polyethylene or polypropylene or a mixture thereof. This layer is water pervious, but not water absorbing, and permits passage of waste fluid towards the absorbent pad 14, which is separated from the top sheet 12 by part 16 of a tissue wadding 26 of hydrophobic non-woven fibres, of polyethylene or polypropylene, or a mixture thereof.
Another part 18 of the wadding 26 lies beneath the pad 14 between it and a... water impervious backing sheet 20 formed of a suitable synthetic plastic material, such as polyethylene film (see Figure 2). The tissue wadding 26 is wrapped about the pad 14 and provides increased support to the pad 14 and assists in assuring its shape. The backing sheet is folded over the edges of the top sheet 12 at 22 and secured thereto to hold the diaper in assembled condition. Adhesives, heat sealing, embossing or other means may be used for assembly purposes. The core 14 is preferably formed of a wood fluff or tissue layers of paper-like material, which are highly absorbent. This material, when subjected to stress, will readily distort.
The wrapped wadding 26 maintains the shape of the pad by providing a high strength wrapping because this hydrophobic material has a very good degree of wet strength and in fact does not absorb fluid, thereby not becoming weakened - 4 48758 by the passage of fluid therethrough. The hydrophobic material resists fluid wetback and in conjunction with the hydrophobic top sheet achieves a high degree of resistance to fluid wetback, even though the material will readily allow fluid to pass through it into the pad 14. This is because the wadding being made of hydrophobic fibres, unlike the tissue waddings of the prior art, does not absorb fluid.

Claims (4)

1. A disposable product comprising a hydrophobic top sheet formed of non-woven fibres of polyethylene or polypropylene or mixtures thereof, a 10 hydrophobic wadding of tissue formed of non-woven fibres of polyethylene or polypropylene or mixtures thereof, an absorbent pad, and a waterproof backing sheet, the said wadding being wrapped around the said absorbent pad and holding the said pad together.
2. A disposable product as claimed in Claim 1 in which the said backing sheet is an imperforate plastic film.
3. A product as claimed in Claim 1 or Claim 2 in the form of a diaper.
4. A disposable diaper as claimed in Claim 3 substantially as specifically described herein with reference to the accompanying drawings.
IE1146/79A 1978-06-09 1979-08-08 Disposable product with hydrophobic anti wetback sheet IE48758B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IE3111/84A IE48759B1 (en) 1978-06-09 1979-08-08 Disposable product with hydrophobic anti wetback sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91411078A 1978-06-09 1978-06-09

Publications (2)

Publication Number Publication Date
IE791146L IE791146L (en) 1979-12-09
IE48758B1 true IE48758B1 (en) 1985-05-15

Family

ID=25433932

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1146/79A IE48758B1 (en) 1978-06-09 1979-08-08 Disposable product with hydrophobic anti wetback sheet

Country Status (18)

Country Link
JP (1) JPS54163138A (en)
AU (1) AU529736B2 (en)
BE (1) BE876895A (en)
BR (1) BR7903643A (en)
CA (1) CA1148302A (en)
CH (1) CH637289A5 (en)
DE (1) DE2922988A1 (en)
DK (1) DK238679A (en)
ES (1) ES251185Y (en)
FR (1) FR2427799A1 (en)
GB (2) GB2101038B (en)
GR (1) GR71737B (en)
IE (1) IE48758B1 (en)
IT (1) IT1116579B (en)
NL (1) NL7904543A (en)
PH (1) PH15524A (en)
PT (1) PT69746A (en)
ZA (1) ZA792776B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3420536A1 (en) * 1984-06-01 1985-12-05 Hans 8228 Freilassing Rodler Nappy
DE3717992A1 (en) * 1987-05-27 1988-12-08 Ver Papierwerke Ag Vapour-permeable sanitary towel
US4798603A (en) * 1987-10-16 1989-01-17 Kimberly-Clark Corporation Absorbent article having a hydrophobic transport layer
US4904249A (en) * 1988-06-06 1990-02-27 Kimberly-Clark Corporation Absorbent undergarment with fluid transfer layer and elasticized crotch design
CA2014203C (en) 1989-05-08 2000-03-21 Margaret Gwyn Latimer Absorbent structure having improved fluid surge management and product incorporating same
CA2026326A1 (en) 1989-10-04 1991-04-05 James Arthur Davis Disposable diaper having a humidity transfer region, breathable zone panel and separation layer
US5037409A (en) 1990-07-12 1991-08-06 Kimberly-Clark Corporation Absorbent article having a hydrophilic flow-modulating layer
US5192606A (en) 1991-09-11 1993-03-09 Kimberly-Clark Corporation Absorbent article having a liner which exhibits improved softness and dryness, and provides for rapid uptake of liquid
ZA92308B (en) 1991-09-11 1992-10-28 Kimberly Clark Co Thin absorbent article having rapid uptake of liquid
US5382400A (en) 1992-08-21 1995-01-17 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric and method for making same
US5405682A (en) 1992-08-26 1995-04-11 Kimberly Clark Corporation Nonwoven fabric made with multicomponent polymeric strands including a blend of polyolefin and elastomeric thermoplastic material
MX9300424A (en) 1992-11-06 1994-05-31 Kimberly Clark Co FIBROUS LAMINATED FABRIC AND METHOD AND APPARATUS FOR THE MANUFACTURE OF THE SAME.
US5370764A (en) 1992-11-06 1994-12-06 Kimberly-Clark Corporation Apparatus for making film laminated material
CA2092604A1 (en) 1992-11-12 1994-05-13 Richard Swee-Chye Yeo Hydrophilic, multicomponent polymeric strands and nonwoven fabrics made therewith
US5482772A (en) 1992-12-28 1996-01-09 Kimberly-Clark Corporation Polymeric strands including a propylene polymer composition and nonwoven fabric and articles made therewith
US5817394A (en) 1993-11-08 1998-10-06 Kimberly-Clark Corporation Fibrous laminated web and method and apparatus for making the same and absorbent articles incorporating the same
US5562650A (en) * 1994-03-04 1996-10-08 Kimberly-Clark Corporation Absorbent article having an improved surge management
US5728081A (en) * 1996-07-16 1998-03-17 Fibertech Group, Inc. Absorbent composite article having fluid acquisition sub-layer
DE19919397A1 (en) * 1999-04-28 2000-11-02 Hcd Gmbh Hygiene product, especially incontinence articles

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809089A (en) * 1971-05-26 1974-05-07 B Hedstrom Diaper
US3881488A (en) * 1971-11-01 1975-05-06 Int Paper Co Disposable diaper
US3838692A (en) * 1972-11-27 1974-10-01 Johnson & Johnson Hydrophobic sheet with hydrophilic passages
US3952745A (en) * 1974-11-19 1976-04-27 The Procter & Gamble Company Disposable diaper having readily flushable absorbent media and improved pad intergrity in use
US3987792A (en) * 1975-07-31 1976-10-26 Colgate-Palmolive Company Disposable diaper having improved liquid retention
US3999547A (en) * 1975-12-29 1976-12-28 Colgate-Palmolive Company Disposable diaper having front side edge sealing means
US4077410A (en) * 1976-07-06 1978-03-07 Johnson & Johnson Disposable absorbent pad with non-woven facing
DE2817998A1 (en) * 1977-04-29 1978-11-02 Procter & Gamble DISPOSABLE DIAPER WITH ELASTIC LEG STRIPES ADJUSTING THE ABSORBENT CORE

Also Published As

Publication number Publication date
GR71737B (en) 1983-06-22
PH15524A (en) 1983-02-09
BR7903643A (en) 1980-02-05
BE876895A (en) 1979-10-01
ES251185Y (en) 1981-09-01
IT7949338A0 (en) 1979-06-07
FR2427799B1 (en) 1985-03-01
DE2922988A1 (en) 1979-12-20
GB2023068A (en) 1979-12-28
CH637289A5 (en) 1983-07-29
JPH0122361B2 (en) 1989-04-26
ZA792776B (en) 1981-01-28
GB2101038A (en) 1983-01-12
FR2427799A1 (en) 1980-01-04
GB2101038B (en) 1983-06-08
CA1148302A (en) 1983-06-21
JPS54163138A (en) 1979-12-25
PT69746A (en) 1979-07-01
AU4782779A (en) 1979-12-13
NL7904543A (en) 1979-12-11
DK238679A (en) 1979-12-10
IE791146L (en) 1979-12-09
IT1116579B (en) 1986-02-10
AU529736B2 (en) 1983-06-16
GB2023068B (en) 1982-11-24
ES251185U (en) 1980-09-16

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MM4A Patent lapsed