US3875943A - Diaper - Google Patents

Diaper Download PDF

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Publication number
US3875943A
US3875943A US394259A US39425973A US3875943A US 3875943 A US3875943 A US 3875943A US 394259 A US394259 A US 394259A US 39425973 A US39425973 A US 39425973A US 3875943 A US3875943 A US 3875943A
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US
United States
Prior art keywords
pad
sheet
diaper
back sheet
face sheet
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.)
Expired - Lifetime
Application number
US394259A
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English (en)
Inventor
John L Fischer
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.)
Colgate Palmolive Co
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 US394259A priority Critical patent/US3875943A/en
Application granted granted Critical
Publication of US3875943A publication Critical patent/US3875943A/en
Priority to BE155657A priority patent/BE828243Q/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/494—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means
    • A61F13/49406—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A61F13/49446—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an impermeable sheet or impermeable part of a sheet placed on or under the top sheet
    • A61F13/49453—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an impermeable sheet or impermeable part of a sheet placed on or under the top sheet the edge leakage prevention sheet being combined with the impermeable backing sheet, e.g. integral with the backing sheet

Definitions

  • Disposable diapers presently being used in quantity are for the most part of the rectangular type because of the economy of manufacture and hence lower cost to the consumer. These rectangular diapers provide for a considerable amount of absorptive material in the crotch area of the diaper but have failed to take full advantage of the full absorptive capabilities of the rectangular diapers.
  • a rectangular diaper is disclosed in the U.S. Pat. No. 3.592.194 issued to Robert C. Duncan on July l3, I971 for DIAPER HAVING IMPROVED WICKING AND DRYNESS.
  • This rectangular diaper is folded in a box pleat such as also disclosed in British Pat. No. 1.011.888 of Dec. l. I965.
  • the panels defined by the box pleated diaper are spaced substantially from each other requiring that the central panel behind the pleated panels receive most of the urine while the spaced apart panels also permit chaffing.
  • the rectangular diaper with the spaced apart panels is of an undue width which allows the legs to force the diaper down so that it tends to sag away from the trunk of the body thus preventing proper utilization of the absorptive capabilities of the diaper.
  • Another object of the invention is to provide a narrower. more comfortable and better fitting diaper in which the wick-ing of fluids is enhanced.
  • the present invention is a disposable diaper formed of a back sheet which is of a waterproof material and a hydrophobic face sheet having a fluid absorbent pad sandwiched therebetween.
  • the diaper is folded in a box pleat and in a manner whereby the inwardly extending panels form by the box pleat substantially abut each other. In this manner, by limiting the space between the panels. the entire diaper is made narrower without sacrificing absorptive capabilities and the absorptive area of the diaper. Further. by utilizing a pad which is of less dimensions than either the outer sheet or face sheet, an arrangement is bad whereby a waterproof edging is provided along the sides of the diaper. yet the edging is thinner and more flexible than the portions where the pad is located, thereby permitting ease and convenience of fastening and lack of chaffing.
  • Another great advantage of the invention is that when the pad is impregnated with perfume or the like material, the fact that the panels abut or substantially abut each other eliminates the channel or passageway between the panels of the prior art rectangular diaper thereby reducing the amount of evaporation of perfume especially in the crotch areas where the perfume is most needed.
  • FIG. I is an exploded perspective view of a diaper constructed in accordance with the concepts of the present invention.
  • FIG. 2 is a plan view of a disposable diaper according to the invention with parts thereof being broken away to show details of construction of other parts of the invention;
  • FIG. 3 is an enlarged vertical sectional view taken along the plane of line 3-3 in FIG. 2;
  • FIG. 4 is a vertical sectional view in an enlarged scale taken along the plane of line 4-4 in FIG. 2;
  • FIG. 5 is a perspective view showing a diaper constructed in accordance with the concepts of the present invention in an intermediate state of folding
  • FIG. 6 is a schematic view of the diaper. not illustrating the absorbent pad used therein while showing the manner in which the diaper is box pleated and folded and showing the parts in an intermediate state of foldmg;
  • FIG. 7 is a view similar to FIG. 6 but showing the diaper in its completely folded position
  • FIG. 8 is a plan view illustrating the diaper and the manner of use thereof.
  • FIG. 9 is a perspective view illustrating the manner in which a diaper is secured in position for use.
  • FIG. 10 is a sectional detailed view taken along the plane of 10-") in FIG. 9;
  • FIG. II is another perspective view further illustrating the diaper as arranged for use.
  • reference numeral 20 is used to generally designate a disposable diaper constructed in accordance with the concepts of the present invention.
  • the diaper 20 is constructed of three main parts. a waterproof back sheet 22, a hydrophilic pad 24, and a hydrophobic face sheet 26.
  • the back sheet 22 is made of any thin waterproof material such as a film of plastic material including polyethylene, polypropylene, polyvenylchloride or other suitable flexible material. Secured to the back sheet are pressure sensitive adhesive coated tabs 28 for use as fasteners when clothing an infant with the diaper 20.
  • the pad 24 is of a suitable hydrophilic material or of a composite construction so as to have a substantially uniform absorptive capacity and is preferably made of a paper envelope 30 filled with a fibre fluff such as wood fluff, cotton fluff or the like. This envelope can be formed after blowing the absorbent fluff material as a coating onto the paper.
  • Other absorbent material can be utilized including a plurality of plies of paper having a fluff coating thereon or of plies of creped cellulose wadding or the like.
  • the face sheet 26 is of a hydrophobic paper.
  • hydrophilic and hydrophobic used herein relate to relatively high and relatively low critical surface tensions of the materials.
  • the face sheet 26 is hydrophobic as evidenced by its lack of affinity for waste fluids since the fluid waste does not spread to any appreciate amount as it absorbed by the hydrophilic pad. Hence, when the face sheet 26 is placed next to an infants skin, its waste fluids pass therethrough and absorbed by the pad 24 leaving the face sheet 26 adjacent the infants skin relatively dry.
  • the pad 24 is both substantially narrower in width than the back sheet 22 and is shorter in length.
  • the face sheet 26 is of the same length as the back sheet, is of greater width than the pad 24 but of less width than the back sheet 22.
  • the pad is positioned on the back sheet 22 and may be bonded at 36 thereto using an adhesive. As shown in FIG. 2, the face sheet 26 overlies the pad and is bonded thereto at 37 outwardly of the periphery 38 of the pad as shown in dotted lines.
  • the back sheet is then folded about the edge 38 of the face sheet 26 to form side flap portions 40,42 which overlie the face sheet 26 but do not overlie the pad 24.
  • the side flap portions are bonded at 44 to the face sheet 26.
  • the assembled diaper 20 is folded in the manner of a box pleat to form a central portion in the form of a central panel 50 defined by fold lines 52 and 54.
  • Inwardly extending portions or panels 56 and 58 are defined by fold lines 52, 60, and 54, 62.
  • a pair of opposed portions defined by fold lines 60,62 and the side edges 64 and 66 of the diaper 20 are formed by the box pleating as outwardly extending panels 68 and 70.
  • the inwardly extending panels 56 and 58 are bent inwardly in the direction indicated by arrows A so that panels 58 and 60 abut each other along the fold lines 60 and 62.
  • the panels 56 and 58 are folded from the position as shown in H6. 6 to the position shown in FIG. 7.
  • Suitable amounts of adhesive as indicated at 72 and 74 are provided on the central panel 50 and bond the inwardly extending panels 56 and 58 at the crotch portions of the diaper 20 to the central panel 50. By doing so the crotch portion is maintained in its relatively narrow configuration.
  • the pad 24 is impregnated with a suitable perfume or the like.
  • a suitable perfume or the like When the diapers according to the invention are packaged by being stacked one diaper upon the other. the impervious waterproof back sheet 24 of each diaper will suffice to maintain the perfume against evaporation by overlying the exposed portions of face sheet 26 of the diaper therebelow.
  • the uppermost diaper in a package is preferably turned face downwardly.
  • the diaper 20 is laid on a surface in preparation for positioning of an infant thereon and one end is fanned out as shown in FIG. 8.
  • An infant is then positioned on the diaper with the infants buttocks being centered over the adhesively secured crotch portion thereof with the opposite end 82 from the end 80 fanned out extending downwardly toward the legs of the infant.
  • the downwardly extending end is brought up between the infants legs to a position approximately even with the infants waist and that end 80 is then fanned out.
  • the diaper is then secured to the child by positioning the corners of the end 80 into overlapping relationship with respect to the corners of the end 82 which fastens by means of the fasteners 28.
  • the corners may be folded back as necessary to best fit and conform to the waist size of the infant as shown in FIG. [0.
  • the pressure sensitive adhesive of the fasteners 28 is preferably selected as to be least irritating to the infants skin and the fastener 28 may be paper back or of a plastic backing such as polyethylene.
  • the pressure sensitive tapes fasteners 28 as packaged as provided with removable protective sheets 84 which are removed prior to the use of the fastener. It is to be noted that because of the pleats maintained by the adhesive 72 and 74 in the crotch portion of the diaper, the dia per fits more closely adjacent the trunk of the infant than heretofore found possible especially because the crotch portion is narrower since the panels 58 and 60 abut at fold lines 62 and 64. The abutting panels will eliminate any channel as formed by pleated diapers where the panels are spaced apart thereby preventing such edges from chafflng the infant as occurs when the inwardly extending panels have their inner edges spaced apart.
  • panels 58 and 60 in abutting relationship it is within the purview of this invention that they be substantially abutting i.e., with a maximum spacing of about inch, and preferably with a maximum spacing of A inch.
  • a disposable diaper comprising a waterproof back sheet, a hydrophobic face sheet, and an absorbent pad impregnated with a volatile material sandwiched between said back sheet and said face sheet, said back sheet, said face sheet and said pad being formed into a pleated configuration in at least the crotch region thereof by means of a plurality of longitudinal folds, said longitudinal folds defining a pair of opposed portions extending inwardly into abutting relationship thereby reducing the loss of said volatile material especially in the crotch area, said pad being of less width said face sheet so that said back sheet and said face sheet abut each other about the periphery of said pad adhesive means securing said face sheet to said back sheet outwardly of the periphery of said pad. and means bonding said inwardly extending panel to said central panel in at least the crotch region of the diaper.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
US394259A 1973-09-04 1973-09-04 Diaper Expired - Lifetime US3875943A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US394259A US3875943A (en) 1973-09-04 1973-09-04 Diaper
BE155657A BE828243Q (fr) 1973-09-04 1975-04-22 Lange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US394259A US3875943A (en) 1973-09-04 1973-09-04 Diaper

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US3875943A true US3875943A (en) 1975-04-08

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2515448A1 (de) * 1975-04-09 1976-10-21 Colgate Palmolive Co Windel
US3999548A (en) * 1975-12-29 1976-12-28 Colgate-Palmolive Company Disposable diaper having fluid trap
US3999547A (en) * 1975-12-29 1976-12-28 Colgate-Palmolive Company Disposable diaper having front side edge sealing means
US4461621A (en) * 1981-10-19 1984-07-24 Colgate-Palmolive Company Disposable diaper with polymer coating
US5167654A (en) * 1990-01-12 1992-12-01 Chicopee Disposable urine and fecal waste containment product
US5211641A (en) * 1989-05-31 1993-05-18 Molnlycke Ab Disposable absorbent articles

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585998A (en) * 1968-03-29 1971-06-22 Ncr Co Disposable diaper with rupturable capsules
US3586000A (en) * 1968-11-15 1971-06-22 Johnson & Johnson Disposable diaper
US3636952A (en) * 1970-04-24 1972-01-25 Riegel Textile Corp Disposable combination flushable diaper and protective cover
US3658063A (en) * 1970-05-27 1972-04-25 Kendall & Co Disposable diaper
US3688767A (en) * 1970-10-20 1972-09-05 Guy Goldstein Diaper-holders or napkin-holders for babies
US3731688A (en) * 1971-06-30 1973-05-08 Techmation Corp Disposable diaper
US3750669A (en) * 1972-04-13 1973-08-07 Georgia Pacific Corp Disposable diapers with adhesive fastening tapes
US3776233A (en) * 1971-05-17 1973-12-04 Colgate Palmolive Co Edge contourable diaper

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585998A (en) * 1968-03-29 1971-06-22 Ncr Co Disposable diaper with rupturable capsules
US3586000A (en) * 1968-11-15 1971-06-22 Johnson & Johnson Disposable diaper
US3636952A (en) * 1970-04-24 1972-01-25 Riegel Textile Corp Disposable combination flushable diaper and protective cover
US3658063A (en) * 1970-05-27 1972-04-25 Kendall & Co Disposable diaper
US3688767A (en) * 1970-10-20 1972-09-05 Guy Goldstein Diaper-holders or napkin-holders for babies
US3776233A (en) * 1971-05-17 1973-12-04 Colgate Palmolive Co Edge contourable diaper
US3731688A (en) * 1971-06-30 1973-05-08 Techmation Corp Disposable diaper
US3750669A (en) * 1972-04-13 1973-08-07 Georgia Pacific Corp Disposable diapers with adhesive fastening tapes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2515448A1 (de) * 1975-04-09 1976-10-21 Colgate Palmolive Co Windel
US3999548A (en) * 1975-12-29 1976-12-28 Colgate-Palmolive Company Disposable diaper having fluid trap
US3999547A (en) * 1975-12-29 1976-12-28 Colgate-Palmolive Company Disposable diaper having front side edge sealing means
FR2336890A1 (fr) * 1975-12-29 1977-07-29 Colgate Palmolive Co Couche a jeter perfectionnee
FR2336891A1 (fr) * 1975-12-29 1977-07-29 Colgate Palmolive Co Couche a jeter apres usage et son procede de fabrication
US4461621A (en) * 1981-10-19 1984-07-24 Colgate-Palmolive Company Disposable diaper with polymer coating
US5211641A (en) * 1989-05-31 1993-05-18 Molnlycke Ab Disposable absorbent articles
US5167654A (en) * 1990-01-12 1992-12-01 Chicopee Disposable urine and fecal waste containment product

Also Published As

Publication number Publication date
BE828243Q (fr) 1975-08-18

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