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US3750669A - Disposable diapers with adhesive fastening tapes - Google Patents

Disposable diapers with adhesive fastening tapes Download PDF

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Publication number
US3750669A
US3750669A US3750669DA US3750669A US 3750669 A US3750669 A US 3750669A US 3750669D A US3750669D A US 3750669DA US 3750669 A US3750669 A US 3750669A
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Prior art keywords
tape
diaper
adhesive
end
surface
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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.)
Expired - Lifetime
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Luca R De
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Georgia Pacific LLC
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Georgia Pacific LLC
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    • 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
    • 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
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/14Layer or component removable to expose adhesive
    • Y10T428/1476Release layer

Abstract

The disclosure concerns disposable diapers having fastening tapes featuring adhesive end portions extending beyond a release paper covering the remainder of the adhesive face of the tape, whereby the free end of the tape may be releasably attached, during manufacture or afterwards, to the diaper to hold this otherwise free end in place until it is to be used.

Description

United States Patent DeLuca Aug. 7, 1973 [54] DISPOSABLE DIAPERS WITH ADHESIVE 3,221,738 12/1965 Ekberg et al. 128/287 FASTENING TAPES 3,610,244 10/1971 Jones 128/287 3,642,001 2/1972 Sabee..... 128/287 Inventor: Raymond DeLuca, Stamford, 3,646,937 3 1972 Gellert 128/287 Conn.

[73] Assignee: Georgia-Pacific Corporation, Primary Examiner-Charles F. Rosenbaum Portland, Oreg. Attorney-William E. Schuyler, Jr. et al.

[22] Filed: Apr. 13, 1972 21 Appl. No.: 243,801 [57] ABSTRACT The disclosure concerns disposable diapers having fas- [52] US. Cl. 128/287 telling tapes featuring adhesive end Portions extending [51] Int. Cl. A611 13/16 beyond a release Paper covering the remainder of the 58 Field of Search 128/284 286 287 adhesive face the P whereby the free end the tapemay be releasably attached, during manufacture [56] Reerences Cited or afterwards, to the diaper to hold this otherwise free UNTED STATES PATENTS end in place until it is to be used. 3,196,874 7/1965 Hrubecky 128/287 6 Claims, 3 Drawing Figures DISPOSABLE DIAPERS WITH ADHESIVE FASTENING TAPES BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to disposable diapers and, more particularly, those having adhesive tape fastening means for securing the diaper about the waist of an infant.

2. DESCRIPTION OF THE PRIOR ART Disposable diapers having adhesive tape fastening means are known in the art. Exemplary of such diapers and tapes are those shown in Duncan et al. US. Pat. No. Re. 26,161 and Asseo, French Pat. No. 1,359,810. As indicated by the Duncan et al. and Asseo patents, disposable diapers incorporating adhesive tapes for waist fastenings characteristically have comprised diapers with strips of tape attached at positions on the diaper corresponding to the waist of the infant on which the diaper is to be worn, such tapes being located to join the front and the rear portions of the diaper about the waist of the infant, which tapes have one end firmly attached to the diaper and have another end, one side of which is coated with adhesive and removably covered by a release paper prior to use. The end coated with adhesive and covered by a conventional release paper hangs freely from the diaper. When it is desired to use the diaper, it is placed about the infant in a conventional manner, the release paper is removed from the tapes and the tapes are pressed into place to fasten the waist portion of the diaper about the infant.

While articles of the type characterized by the Dun can et al and Asseo patents have met with some success, they also present certain problems. For example, the free end of the tape will hang loosely from the diaper prior to its use. Particularly if the tape is fairly long, this loose hanging of the free end is undesirable. It presents potential manufacturing difficulties during mechanical packaging of the diapers because the loose end can become entangled in the machinery. Moreover, the tapes themselves may become damaged or even torn off in handling prior to final usage of the diaper. Still further, the loose end is unsightly and thus unappealing to prospective purchasers.

SUMMARY OF THE INVENTION Basically, the disposable diaper of this invention comprises an absorbent pad having a water permeable facing surface and a backing surface which may be defined by a waterproof backing sheet with the lateral extremities of the backing sheet folded over the lateral extremities of the pad, and tape fastener means which further comprise a tape strip, one end of which is firmly secured to the backing surface, and the opposite end of which features an adhesive surface adjacent the backing sheet, this adhesive surface having a releasably attached covering, means covering all of the adhesive surface except for an end marginal portion of exposed adhesive at the outer extremity of this opposite end of the tape strip.

With the foregoing in mind, it is an object of the present invention to provide a disposable diaper with an adhesive tape strip for fastening the waist of the diaper, which tape strip is provided with means for holding the adhesive coated end releasably secured to the diaper until that end is pulled free by the final user.

It is another object of the invention to provide a means for releasably securing the adhesive-coated end of a disposable diaper fastening tape to the diaper during manufacture to facilitate mechanical processing and packaging of the diaper, to protect the fastening tape prior to its usage and to present a more pleasing appearance of the diaper unit.

These and additional objects of the invention will be apparent from a consideration of the following detailed description of the preferred embodiment thereof given in connection with the following drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the disposable diaper of this invention with the adhesive fastening tapes in the releasably secured configuration prior to final use.

FIG. 2 is a sectional view taken on line 2-2 of FIG. 1.

FIG. 3 is a perspective view of a portion of a disposable diaper of this invention with the adhesive tape freed from'its releasably secured position prior to use; this view is shown partially in section.

DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the invention is shown in FIGS. 1 and 3 comprising a pair of adhesive fastening tape strips 1 attached to a disposable diaper 12. The diaper comprises an absorbent pad 2, preferably of nondirectional, non-woven cellulose, with a waterproof backing sheet or outer covering 3, preferably of a flexible plastic material such as polyethylene, and a water permeable inner covering 4, preferably of non-woven rayon. The backing sheet 3 and the facing sheet 4 extend beyondthe longitudinal extremities of the absorbent pad by approximately one inch and are bonded together, either adhesively or by heat sealing, at their respective longitudinal extremities 5. The backing sheet 3 is also sized to extend beyond the lateral extremities 6 of the absorbent pad and is then folded over the lateral extremities 6 or edges of the pad and is disposed to extend inwardly from these edges. The facing surface or inner covering 4 is sized to extend laterally approximately to the lateral extremities or outside edges of the absorbent pad 2; this inner covering 4 is disposed to overlie the inwardly folded portion of the backing sheet 3 and is bonded, either adhesively or by heat'sealing, to the backing sheet 3 along this overlying portion.

FIG. 2 and FIG. 3 show various features of the tape fastening structure with greater detail. The portion of the tape 1 positioned beneath the side portions on side flaps 7 of the diaper 12 is described as the first portion of the tape; the exposed end of the tape, visible in FIG. 1, is described as the second portion. The inner surface 8 of the first portion of the tape '1 is firmly secured to the impenneable covering 3 on the underside of the side flaps 7 of the diaper 12 by an adhesive or by heat sealing. Inner surface 8a of the tape 1, a continuation upon the second portion of the tape 1 of inner surface 8 of the first portion, is coated with a pressure sensitive adhesive 9. This adhesive coated surface 8a is provided with a release paper covering 10 which covers all of surface except for a small end marginal portion 11, the adhesive surface of which end marginal portion is left exposed. The outer surface 13 of the tape is left free of any coating.

During the manufacturing processes, after the first portion of the tape has been firmly secured to the underside of the diaper side flap 7, the outer portion may be folded over the lateral extremities 6 and the upper surface of the diaper side flaps 7 and releasably secured in place by pressing the exposed adhesive coated end marginal of portion 1 1 against the upper surface of the diaper side flap 7. In this configuration, the adhesive fastening tape 1 is releasably held in position against the diaper 12, thus facilitating packaging of the diaper by eliminating the problem of loose tapes hainging outside the folds of the diaper, and also presenting a neater and more pleasing appearance for the product. Consequently, while the use of a release paper to cover the adhesive portions of a diaper fastening tape is oldln the art, this improvement of disposing the outer end of such release paper inwardly of the end marginal portion 1] of the adhesive diaper fastening tape provides substantial new benefits.

At such time as the diaper is to be used, the releasably secured end marginal portion 11 of the tape 1 may easily be pulled free from its secured configuration by slight finger pressure applied to lift the outer portion of the tape 1 away from the upper surface of the diaper side flap 7. The tape 1 will then be in the position shown in FIG. 3, such that the release paper may then be peeled from the adhesive surface 8a thus exposing the full adhesive surface for use in fastening the diaper about the waist of the wearer in the conventional manner. Preferably, the marginal adhesive end of the tape is releasably secured to the surface of the water permeable facing sheet which desirably has a surface to which the adhesive will only lightly adhere so that it can be easily pulled free without substantially weakening the adhesive for subsequent use.

As will be evident, the structure of this invention may be used in conjunction with diaper fastening adhesive tapes of various types. For example, the adhesive fastening tape may be disposed such that it could be folded over any outer extremity of the diaper, lateral or longitudinal, and these tapes may be fabricated of cloth, rubber, plastic, or other suitable material and may be elastic or inelastic or may have an elastic section disposed between the firmly secured inner portion and an inelastic adhesive outer portion of the tape, such elastic section being coated with adhesive or not. The release paper used with this invention may be any conventional release material paper, cloth, or other suitable material usually treated with wax or other substance in a known manner so that the adhesive will only lightly adhere thereto. While two tape fasteners are shown in the preferred embodiment, clearly one extended tape fastener or more than two tape fasteners could be employed without departing from the spirit of the invention.

It is recognized that other modifications of the invention will occur to those skilled in the art. Therefore, the scope of the invention is to be limited solely by the scope of the claims appended hereto.

1 claim:

1. A disposable diaper comprising an absorbent pad having a backing surface and a water permeable facing surface, and

tape fastener means comprising a tape strip having an inner surface and an outer surface, the inner surface of a first end portion of said tape strip being firmly secured to said backing surface, the inner surface of a second end portion of said tape strip being adhesive, and

covering means overlying and releasably attached to said adhesive inner surface of said second end portion, said covering means being disposed inwardly of the outer end of said second end portion to leave exposed an end marginal portion of said adhesive surface.

2. The disposable diaper of claim 1 wherein said second end portion of said tape strip is folded over an outer extremity of said disposable diaper and is releasably secured in place.

3. The disposable diaper of claim I wherein the first end of siad tape strip is secured near a longitudinal extremity of said pad and extends outwardly from a lateral extremity of said pad, said second end portion of said tape strip being folded inwardly around said lateral extremity and secured by means of said exposed adhesive marginal end portion.

4. The disposable diaper of claim 3 wherein said tape fastening means includes a pair of said tape strips extending outwardly from the opposite lateral extremities of said pad and said adhesive is a pressure sensitive adhesive.

5. The disposable diaper of claim 4 wherein said water permeable facing surface is defined by a water permeable sheet overlying said pad and said marginal end portions are releasably secured to said water permeable sheet.

6. The disposable diaper of claim 4 wherein said backing surface is defined by a waterproof backing sheet underlying said pad and having lateral extremities folded over the lateral extremities of said pad.

Claims (6)

1. A disposable diaper comprising an absorbent pad having a backing surface and a water permeable facing surface, and tape fastener means comprising a tape strip having an inner surface and an outer surface, the inner surface of a first end portion of said tape strip being firmly secured to said backing surface, the inner surface of a second end portion of said tape strip being adhesive, and covering means overlying and releasably attached to said adhesive inner surface of said second end portion, said covering means being disposed inwardly of the outer end of said second end portion to leave exposed an end marginal portion of said adhesive surface.
2. The disposable diaper of claim 1 wherein said second end portion of said tape strip is folded over an outer extremity of said disposable diaper and is releasably secured in place.
3. The disposable diaper of claim 1 wherein the first end of siad tape strip is secured near a longitudinal extremity of said pad and extends outwardly from a lateral extremity of said pad, said second end portion of said tape strip being folded inwardly around said lateral extremity and secured by means of said exposed adhesive marginal end portion.
4. The disposable diaper of claim 3 wherein said tape fastening means includes a pair of said tape strips extending outwardly from the opposite lateral extremities of said pad and said adhesive is a preSsure sensitive adhesive.
5. The disposable diaper of claim 4 wherein said water permeable facing surface is defined by a water permeable sheet overlying said pad and said marginal end portions are releasably secured to said water permeable sheet.
6. The disposable diaper of claim 4 wherein said backing surface is defined by a waterproof backing sheet underlying said pad and having lateral extremities folded over the lateral extremities of said pad.
US3750669A 1972-04-13 1972-04-13 Disposable diapers with adhesive fastening tapes Expired - Lifetime US3750669A (en)

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2222964A1 (en) * 1973-03-29 1974-10-25 Paper Converting Machine Co
US3853129A (en) * 1973-10-01 1974-12-10 Union Carbide Corp Pressure-sensitive tape fastener for disposable diapers
US3875621A (en) * 1974-02-04 1975-04-08 Colgate Palmolive Co Multiply folded adhesive diaper fastener
US3875943A (en) * 1973-09-04 1975-04-08 Colgate Palmolive Co Diaper
US3880165A (en) * 1974-05-20 1975-04-29 Rose Prizzia Disposable diaper with T-shirt holding means
US3905369A (en) * 1973-08-10 1975-09-16 Johnson & Johnson Diaper with adhesive tabs
US3920016A (en) * 1974-09-03 1975-11-18 Johnson & Johnson Fastening tab means for a disposable diaper
US3951150A (en) * 1974-10-31 1976-04-20 Colgate-Palmolive Company Diaper with elastic waist means
US3967624A (en) * 1975-04-04 1976-07-06 Johnson & Johnson Disposable diaper with tab fasteners having a perforated cover strip
US3987793A (en) * 1975-09-29 1976-10-26 Johnson & Johnson Diaper with tab fastener having backing web and face web
US3989048A (en) * 1975-09-29 1976-11-02 Johnson & Johnson Diaper with loop-type adhesive fastener releasably secured to diaper facing
US3989047A (en) * 1975-09-29 1976-11-02 Johnson & Johnson Diaper with loop-type adhesive fastener
US3990450A (en) * 1974-10-31 1976-11-09 Colgate-Palmolive Company Diaper with elastic waist means
US3990449A (en) * 1975-12-19 1976-11-09 Johnson & Johnson Tab fastener having at least two anchoring legs
US4005712A (en) * 1975-11-03 1977-02-01 Colgate-Palmolive Company Disposable diaper with adjustable tape fastener
US4024867A (en) * 1975-03-21 1977-05-24 Johnson & Johnson Disposable diaper with permanently attached adhesive belt fastening means
US4033348A (en) * 1975-09-16 1977-07-05 Johnson & Johnson Disposable diaper having a tab fastener with a bifurcated fixed end
DE2703585A1 (en) * 1976-02-02 1977-08-04 Colgate Palmolive Co disposable diaper
US4050463A (en) * 1976-08-20 1977-09-27 Colgate-Palmolive Company Diapers
US4051853A (en) * 1976-08-09 1977-10-04 Colgate-Palmolive Company Diaper with extensible fastener
US5916207A (en) * 1995-11-14 1999-06-29 Kao Corporation Disposable diapers with fastening tapes becoming elastic during use
US6221483B1 (en) 1998-09-10 2001-04-24 Avery Dennison Corporation Reversibly extensible film

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3196874A (en) * 1962-07-25 1965-07-27 Kimberly Clark Co Disposable prefolded diaper
US3221738A (en) * 1962-04-05 1965-12-07 Gustaf E Ekberg Method for manufacturing diapers and the like, and a diaper manufactured in accordance with this method
US3610244A (en) * 1969-10-20 1971-10-05 Jones Sr John L Integral diaper waistband fasteners
US3642001A (en) * 1970-07-27 1972-02-15 Reinhardt N Sabee Disposable diaper or the like
US3646937A (en) * 1970-02-19 1972-03-07 Procter & Gamble Improved pressure-sensitive tape fastener for disposable diapers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221738A (en) * 1962-04-05 1965-12-07 Gustaf E Ekberg Method for manufacturing diapers and the like, and a diaper manufactured in accordance with this method
US3196874A (en) * 1962-07-25 1965-07-27 Kimberly Clark Co Disposable prefolded diaper
US3610244A (en) * 1969-10-20 1971-10-05 Jones Sr John L Integral diaper waistband fasteners
US3646937A (en) * 1970-02-19 1972-03-07 Procter & Gamble Improved pressure-sensitive tape fastener for disposable diapers
US3642001A (en) * 1970-07-27 1972-02-15 Reinhardt N Sabee Disposable diaper or the like

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2222964A1 (en) * 1973-03-29 1974-10-25 Paper Converting Machine Co
US3905369A (en) * 1973-08-10 1975-09-16 Johnson & Johnson Diaper with adhesive tabs
US3875943A (en) * 1973-09-04 1975-04-08 Colgate Palmolive Co Diaper
US3853129A (en) * 1973-10-01 1974-12-10 Union Carbide Corp Pressure-sensitive tape fastener for disposable diapers
US3875621A (en) * 1974-02-04 1975-04-08 Colgate Palmolive Co Multiply folded adhesive diaper fastener
US3880165A (en) * 1974-05-20 1975-04-29 Rose Prizzia Disposable diaper with T-shirt holding means
US3920016A (en) * 1974-09-03 1975-11-18 Johnson & Johnson Fastening tab means for a disposable diaper
US3951150A (en) * 1974-10-31 1976-04-20 Colgate-Palmolive Company Diaper with elastic waist means
US3990450A (en) * 1974-10-31 1976-11-09 Colgate-Palmolive Company Diaper with elastic waist means
US4024867A (en) * 1975-03-21 1977-05-24 Johnson & Johnson Disposable diaper with permanently attached adhesive belt fastening means
US3967624A (en) * 1975-04-04 1976-07-06 Johnson & Johnson Disposable diaper with tab fasteners having a perforated cover strip
US4033348A (en) * 1975-09-16 1977-07-05 Johnson & Johnson Disposable diaper having a tab fastener with a bifurcated fixed end
US3989048A (en) * 1975-09-29 1976-11-02 Johnson & Johnson Diaper with loop-type adhesive fastener releasably secured to diaper facing
US3987793A (en) * 1975-09-29 1976-10-26 Johnson & Johnson Diaper with tab fastener having backing web and face web
US3989047A (en) * 1975-09-29 1976-11-02 Johnson & Johnson Diaper with loop-type adhesive fastener
US4005712A (en) * 1975-11-03 1977-02-01 Colgate-Palmolive Company Disposable diaper with adjustable tape fastener
US3990449A (en) * 1975-12-19 1976-11-09 Johnson & Johnson Tab fastener having at least two anchoring legs
DE2703585A1 (en) * 1976-02-02 1977-08-04 Colgate Palmolive Co disposable diaper
US4051853A (en) * 1976-08-09 1977-10-04 Colgate-Palmolive Company Diaper with extensible fastener
US4050463A (en) * 1976-08-20 1977-09-27 Colgate-Palmolive Company Diapers
US5916207A (en) * 1995-11-14 1999-06-29 Kao Corporation Disposable diapers with fastening tapes becoming elastic during use
US6221483B1 (en) 1998-09-10 2001-04-24 Avery Dennison Corporation Reversibly extensible film
US6669887B2 (en) 1998-09-10 2003-12-30 Avery Dennison Corporation Reversibly extensible film

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