US3913580A - Adhesively attached absorbent product - Google Patents

Adhesively attached absorbent product Download PDF

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Publication number
US3913580A
US3913580A US515387A US51538774A US3913580A US 3913580 A US3913580 A US 3913580A US 515387 A US515387 A US 515387A US 51538774 A US51538774 A US 51538774A US 3913580 A US3913580 A US 3913580A
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United States
Prior art keywords
adhesive
barrier sheet
product
band
pressure sensitive
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
US515387A
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English (en)
Inventor
James A Ginocchio
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.)
Personal Products Co
Kenvue Brands LLC
Original Assignee
Personal Products 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 Personal Products Co filed Critical Personal Products Co
Priority to US515387A priority Critical patent/US3913580A/en
Priority to AU85084/75A priority patent/AU491644B2/en
Priority to ZA756523A priority patent/ZA756523B/xx
Priority to CA237,674A priority patent/CA1056103A/en
Priority to IE2243/75A priority patent/IE41811B1/en
Priority to JP50123327A priority patent/JPS5913212B2/ja
Priority to DE19752546208 priority patent/DE2546208A1/de
Application granted granted Critical
Publication of US3913580A publication Critical patent/US3913580A/en
Assigned to MCNEIL-PPC, INC. reassignment MCNEIL-PPC, INC. MERGER (SEE DOCUMENT FOR DETAILS). DECEMBER 6, 1988, NEW JERSEY Assignors: MCNEIL CONSUMER PRODUCTS COMPANY, PERSONAL PRODUCTS COMPANY (CHANGED TO)
Assigned to PERSONAL PRODUCTS COMPANY reassignment PERSONAL PRODUCTS COMPANY MERGER (SEE DOCUMENT FOR DETAILS). Assignors: MCNEIL CONSUMER PRODUCTS COMPANY, A PA CORP.
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
    • A61F13/51—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 outer layers of the pads
    • A61F13/515—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 outer layers of the pads characterised by the interconnection of the topsheet and the backsheet
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
    • 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
    • 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
    • A61F13/56—Supporting or fastening means
    • A61F13/58—Adhesive tab fastener elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
    • 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
    • A61F13/51—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 outer layers of the pads
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • A61F2013/51409—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
    • 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
    • A61F2013/530131—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 being made in fibre but being not pulp
    • 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
    • A61F2013/53445—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 from several sheets
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
    • A61F2013/53908—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 characterised by the connection of the absorbent layers with each other or with the outer layers with adhesive
    • 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
    • A61F13/56—Supporting or fastening means
    • A61F13/58—Adhesive tab fastener elements
    • A61F2013/582—Adhesive tab fastener elements with one strip on one place
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]

Definitions

  • a protective cover strip is releasably adhered to the [52] U-S- Cl 128/290 W; 128/284; 124/287; pressure sensitive adhesive.
  • the barrier sheet is sel6l/l46; 156/290 cured in place by a plurality of spaced parallel lines of [51] Int. Cl. .1 A61F 13/16 adhesive on the surface thereof opposite to the strip of [58] Field of Search 128/290 R, 290 W 290 P, pressure sensitive adhesive.
  • the band of q Y' includes 2295439 9/1942 VOI-gtman v I GI/I46 X rectangular area generally coextensive w th the length 2625'161 1/1953 Johnson 128/290 w of the absorbent pad and a plurality of l1nes of adhe- 3,0e5,715 11/1962 Gobbo, Sr. et alt 128/287 Sive extend outwardly from PP ends Of the 3,221,73s 12/1965 Ekberg et al. 1. 128/287 erally r ang l r area into the tab portions of the 3,400,717 9/1968 Cubitt et a1. 128/284 product.
  • Such lines of adhesive are spaced from one 316165797 ll97l Champagne! cl 123/290 W another by a distance generally the same as the dis- 31565923 5/1972 Champalgrwl23/290 w tance between the lines of adhesive outwardly of the 3,727,615 4/1973 Duchane 128/290 W adhesivg band.
  • This invention relates in general to absorbent products of the sanitary napkin type, and particularly to such products which are retained in place by adhesive adherement to a garment of the wearer to provide protection for such garment.
  • Such adhesively attached absorbent products have met with significant commercial success in the recent past, and have been particularly convenient to use in the days preceding a woman's menstrual cycle and at the end of the menstrual cycle. Such products have also had widespread use during periods of heavy discharge as added protection for a woman using a tampon. Women have also found it convenient to use such products in between menstrual cycles to protect undergarments against body discharges and when using various medicaments. These products are particularly convenient to use, since they do not require any pins, belts or special undergarments, and can be readily retained in place by merely pressing the adhesive into engagement with an undergarment.
  • Absorbent products of the above type conventionally have included an absorbent core or pad formed entirely of short cellulose fibers, such as cotton linters or wood pulp fibers, or mixtures thereof, held together primarily by interfiber bonds, and which are commonly referred to as "fluff.”
  • Such pads are generally rectangular both in plan view and in cross section, and are surrounded by a soft fluid pervious body engaging cover, such as an apertured nonwoven fabric as disclosed, for example, in commonly assigned US. Pat. Nos. 2,862,251; 3,081,514 and 3,081,515.
  • the side of the product opposite from the side to be positioned against the body of the wearer has conventionally included a thin fluid impervious barrier sheet formed of a material such as polyethylene.
  • Such a sheet is normally adhesively adhered to the remainder of the absorbent product, and the exposed outer face of the barrier sheet is provided with a strip of pressure sensitive adhesive for securing the product to a garment such as underpants.
  • a protective cover strip is releasably adhered to the strip of adhesive, and is removed just prior to use of the product.
  • the covers and barrier sheets that are used in absorbent products of the type described above are usually longer than the absorbent pads to confine the pad to the interior of the product, and to provide tabs at opposite ends of the product.
  • One of the problems that has been encountered in the past is to adequately control the amount of adhesive substance that is utilized to secure the barrier sheet in place on the product, since if too much adhesive is used, undesirable stiffening occurs, particularly in the tab area, and if too little adhesive is used, the absorbent product can come apart when subjected to stress.
  • Another vexatious problem that arises in the use of products as described above results from the fact that the barrier sheet that is utilized to retain body fluids within the product is extremely thin and flexible. As a result, when the protective cover strip is removed from the pressure sensitive adhesive, unless the user of the product is extremely careful, it is possible that different sections of the pressure sensitive adhesive will adhere to one another, oftentimes causing permanent creasing or wrinkling of the barrier sheet and sometimes making the product unusable. The problem is complicated by the fact that the exposed pressure sensitive adhesive must be readily adhereable to the garment of the wearer, so that of necessity, the pressure sensitive adhesive must be extremely tacky. As a result, when different sections of the pressure sensitive adhesive stick to one another, they are extremely difficult to pull apart.
  • the present invention provides a solution to the problems set forth above by virtue of a unique adhesive pattern for joining the barrier sheet to the remainder of the absorbent product.
  • the adhesive pattern includes a continuous band of adhesive which extends from end to end of the barrier sheet on the side thereof opposite from the pressure sensitive adhesive and in alignment therewith, which band adds significant strength to the barrier sheet in the cross direction.
  • the band of adhesive includes a generally rectangularly shaped midportion which extends a major portion of the length of the barrier sheet and which is preferably slightly wider than the strip of pressure sensitive adhesive, although this is not critical to the present invention.
  • the adhesive pattern further includes a plurality of spaced continuous and parallel lines of adhesive on opposite sides of the band of adhesive, which lines extend from end to end of the barrier sheet, and which cooperate with the band of adhesive to bond the barrier sheet to the underlying portion of the absorbent product.
  • the band of adhesive also includes a plurality of spaced lines which extend outwardly from the rectangular area at opposite ends thereof, with the lines of the band being spaced from one another by about the same distance as the lines outwardly of the band.
  • the generally rectangular area of the band of adhesive corresponds in length to the pad of the absorbent product, with the lines at the opposite ends of the band being present in the tabs of the product.
  • the sub-assembly consisting of the pad and fluid pervious cover is brought into registry with the barrier sheet having the above described adhesive pattern thereon, and the resulting structure is subjected to compression in the areas outwardly of the absorbent pad to cause the adhesive on the barrier sheet to spread slightly in the tab area and to bond positively with the cover of the product.
  • the continuous central band of the adhesive pattern can be applied simultaneously with the application of the adhesive lines outwardly thereof, or in a separate processing step.
  • the band is preferably formed by discharging an appropriate adhesive substance onto the barrier sheet through openings in the metering valve, and controlling the valve such that the adhesive substance pools or floods the area of the barrier sheet immediately adjacent to the metering valve during formation of the generally rectangular area of the band and forms discreet lines of adhesive outwardly of the ends of the generally rectangular area in those sections of the band corresponding to the tab areas of the product.
  • the basic weight of the lines outwardly of the ends of the generally rectangular area is substantially the same as the lines at opposite sides of the rectangular area, so that the strength of the tab seal is generally uniform throughout the width of the product.
  • FIG. I is a perspective view of an absorbent product formed in accordance with the teachings of the present invention, with certain portions of the product being folded back or torn away to expose underlying portions;
  • FIG. 2 is a plan view of the undersurface of the barrier sheet of the absorbent product of the present invention.
  • FIG. 3 is a cross-sectional view taken generally along line 33 of FIG. 1;
  • FIG. 4 is a cross-sectional view taken generally along line 44 of FIG. 1;
  • FIG. 5 is a bottom plan view of a metering valve which may be used to form the central band ofadhesive on the undersurface of the barrier sheet;
  • FIG. 6 is a cross-sectional view taken generally along line 6-6 of FIG. 5.
  • the absorbent product of the present invention is illustrated in its entirety at 10 in FIG. I, and includes an absorbent core or pad 12, a fluid pervious cover 14, and a fluid impervious barrier sheet I6.
  • Absorbent pad 12 is formed entirely of loosely compacted short cellulosic fibers, i.e., fibers having a length less than about one-fourth inch, and preferably is in the form of a lowbulk density batt referred to conventionally as "fluff, wherein the fibers are retained together by interfiber bonds without the use of added adhesive.
  • Pad 12 may be formed of wood pulp fibers or cotton linters or mixtures thereof.
  • Pad 12 is generally in the shape ofa rectangular parallelpiped as is evident by comparing FIGS. 1 and 3.
  • Cover 14 is rectangular in shape and wider and longer than pad 12.
  • the side marginal edges 14a and 14!; (FIGS. 3 and 4) of the cover are folded around the opposite side edges of the pad, so as to be present at the outer side of the product, i.e., that side which faces away from the body of the wearer and which is to be adhered to an undergarment, as will hereinafter appear. While cover portions and 14b have been illustrated as being spaced from one another, the present invention contemplates that a wider cover may be utilized, with the opposite edges being folded into close proximity or even into overlapping relationship with one another.
  • Barrier sheet 16 is formed of a thin fluid impervious film material, such as polyethylene, and barrier sheet 16 is also rectangular, corresponding in length to cover 14 and approximately in width to pad 12.
  • a polyethyl ene sheet 2 mils thick has functioned very satisfactorily as a barrier sheet in the present invention.
  • a strip 18 of tacky pressure sensitive adhesive is provided on the outer face of barrier sheet 16, and extends continuously from end to end thereof. Pressure sensitive adhesive strip 18 covers a rectangular area which is cen trally located on the exposed side of barrier sheet 16, and a protective cover strip 20 is releasably adhered to adhesive 18 to protect the same prior to use of the product.
  • Protective strip 20 may be slightly wider than adhesive strip 18.
  • the pressure sensitive strip 18 may be coated directly onto the barrier sheet, applied to protective cover strip 20 and transferred to the barrier sheet (as is described in commonly assigned US. Pat. No. 3,595,237), or may be provided by a double faced adhesive tape, as will be well understood by those skilled in the art. In any event, once protective strip 20 is removed, adhesive strip 18 provides an exposed tacky mass which is utilized to retain the product in place on the garment of the wearer but which would, prior to the incorporation of the barrier sheet adhesion system of this invention, require great care on the part of the user to avoid the problems of self adhesion herein referred to.
  • a continuous central adhesive band 24 in alignment with adhesive strip 18 and a plurality of spaced parallel adhesive lines 26 arranged outwardly and on opposite sides of band 24.
  • lines 26 extend continuously from end to end of the barrier sheet (the length of the barrier sheet being denoted by the broken lines in FIG. 2), and are disposed in parallelism with the sides of the sheet and with band 24.
  • Band 24 includes a generally rectangularly shaped midportion 28 which extends a major portion of the length of the barrier sheet, and a plurality of equally laterally spaced parallel lines 280 extending outwardly from each end of rectangular area 28.
  • Rectangular area 28 corresponds in length generally with pad 12 and lines 28a extend outwardly from pad 12 so as to be present in the tabs 30 at opposite ends of the product.
  • the distance between lines 28a is generally the same as the distance between lines 26, and the quantity of adhesive per unit length for all of the lines is essentially the same so that the strength of the tab seals will be uniform across the width thereof.
  • Band 24 can be formed simultaneously with the formation of lines 26 or in a separate processing step. The same or different adhesives can be used.
  • a metering valve 32 which may be utilized to form band 24 is shown in FIGS. 5 and 6, and valve 32 forms the desired adhesive pattern on a continuous web of barrier sheet film stock by a wiping action as the film moves beneath the valve in engagement with the lower surface thereof.
  • Valve 32 includes a body 34 having a chamber 36 therein, which converges downwardly, as can be seen in FIG. 6.
  • An appropriate adhesive substance under pressure is admitted into chamber 36 through inlet 38, and is forced from chamber 36 through downwardly extending discharge ports 40, there being one such discharge port for each line 28a.
  • valve body 34 is undercut at 42 to define a recess in which adhesive from ports 40 is collected.
  • a control spool 44 is mounted for vertical movement within valve body 34 for controlling the quantity of adhesive flowing through ports 40.
  • the lower end 46 of the control spool is tapered corresponding to the taper at the lower end of chamber 36, and when lines 28a are formed on the film of barrier sheet material passing directly below valve 32, spool 44 is moved downwardly to locate lower end 46 in flowrestricting relationship with respect to ports 40 so that adhesive flows directly onto the barrier film from ports 40.
  • the spool 44 When rectangular areas 28 are to be formed on the barrier film, the spool 44 is moved upwardly out of flow-restricting relationship with respect to ports 40, and adhesive under pressure is forced outwardly to fill the recess formed by undercut 42, so that the area 28 is continuous both lengthwise and transversely.
  • valve spool The exact position of the valve spool relative to the valve chamber during formation of band 24 will depend on many factors, such as whether a cold or a hot melt adhesive is used, the viscosity of the particular adhesive, the rate of movement of the barrier film, etc. Also, the structure of the metering valve itself is not critical to the present invention, and configurations other than that illustrated in FIGS. 5 and 6 will suggest themselves to those skilled in the art.
  • subassemblies consisting of spaced pads 12 partially wrapped with cover 14 are fed into juxtaposition with the sheet of adhesively coated barrier film material in timed relationship with respect to the reciprocation of spool 44 so that the lines 28a are in registry with the portions of the cover between the pads.
  • the resulting sandwich structure is then subjected to light compaction between compression rolls, to cause the adhesive lines 26 and the adhesive band 24 to penetrate into and bond with the adjacent underlying fibrous portion of the product.
  • two sets of two adhesive lines 26 bond barrier sheet 16 to each of the inwardly folded edges 14a and 14b of the cover 14, while two sets of four adhesive lines 26 bond the barrier sheet 16 to pad 12 at each side of band 24 and four adhesive lines 28a are present at the ends of band 24 in the tabs 30.
  • adhesive lines 26 and 280 were about three sixty-fourths inch in width, with rectangular area 28 being about three-eighths inch in width.
  • the entire adhesive pattern on the barrier sheet was about .004 inch thick, and was found to provide a secure bond between the barrier sheet and the remainder of the absorbent product.
  • the rectangular area 28 of band 24 is preferably at least as wide as the pressure sensitive adhesive strip 18, and inthe embodiment described in the preceeding paragraph, the pressure sensitive adhesive strip was one-fourth inch in width and the rectangular area was three-eighths inch in width. Such an area was found to reinforce the mid-portion of the barrier sheet and provided increased resistance to wrinkling of the barrier sheet, thereby minimizing the likelihood of one portion of the pressure sensitive adhesive being inadvertently adhered to another once the protective covering strip has been removed therefrom.
  • An absorbent product for adhesive attachment to a wearer's garment comprising:
  • an absorbent pad having longitudinal sides, transverse ends, a first generally rectangular face to be disposed toward the body of the wearer and a second generally rectangular face to be disposed toward the garment of the wearer;
  • a fluid pervious cover having at least a portion positioned adjacent said first face, said cover being generally rectangular and larger and wider than said pad; the opposite longitudinal marginal portions of said cover being folded over adjacent and longitudinal sides of said pad and extending inwardly over the second face of said pad; fluid impervious barrier sheet overlying said inwardly extending portion of said cover, said barrier sheet being generally coextensive in length with said cover;
  • pressure sensitive adhesive means extending longitudinally on the outer face of said barrier sheet; a protective strip covering said pressure sensitive adhesive means and releasably adhered thereto;
  • adhesive means on the inner face of said barrier sheet for attaching said barrier sheet to said product said adhesive means comprising a plurality of lines extending longitudinally of said barrier sheet and parallel with the side edges of said pad and a band of adhesive coaligned with and beneath said pressure sensitive adhesive means, said band of adhesive being at least as wide as said pressure sensitive adhesive means.
  • An absorbent product having an inner face adapted to be disposed toward the body of the wearer and an outer oppositely directed face, said product comprising: an absorbent pad; a fluid pervious cover adjacent said pad at the inner face of the product, opposite side marginal portions of said cover being folded over adjacent side edges of said pad and extending inwardly over the outer face of the product; a fluid impervious barrier sheet outwardly of the inwardly extending portions of said cover, said barrier sheet being generally coextensive in length with said cover; pressure sensitive adhesive means on the outer face of said barrier sheet for attaching said product to an undergarmentor the like; and adhesive means on the inner face of said barrier sheet for attaching said barrier sheet at the outer face of the product.
  • said latter adhesive means including a plurality of transversely spaced lines of adhesive extending longitudinally of said barrier sheet and parallel with the side edges of said pad and a band of adhesive in alignment with said first mentioned pressure sensitive adhesive means, said band of adhesive being at least twice as wide as any of said lines of adhesive.
  • said band of adhesive covers a continuous generally rectangularly shaped area of said barrier sheet, said area being generally coextensive in length with said pad.
  • the method of forming an absorbent product for adhesive attachment to a wearers garment comprising the steps of: providing a fluid impervious barrier sheet having a pressure sensitive adhesive means on one side thereof; applying an adhesive substance to the side of said barrier sheet opposite said pressure sensitive adhesive means by depositing (a) a band of adhesive in alignment with said pressure sensitive adhesive means and (b) a plurality of spaced lines of adhesive outwardly of opposite sides of said band; and attaching an absorbent member to said adhesive substance.
  • said adhesive band depositing step is further characterized by depositing adhesive substance over a continuous generally rectangularly shaped area having spaced lines of adhesive substance extending outwardly from opposite ends thereof, and wherein said attaching step is performed by adhering said absorbent member to said continuous generally rectangularly shaped adhesive area and to the lines of adhesive outwardly thereof.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Laminated Bodies (AREA)
US515387A 1974-10-16 1974-10-16 Adhesively attached absorbent product Expired - Lifetime US3913580A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US515387A US3913580A (en) 1974-10-16 1974-10-16 Adhesively attached absorbent product
AU85084/75A AU491644B2 (en) 1974-10-16 1975-09-23 Adhesively attached absorbent product
CA237,674A CA1056103A (en) 1974-10-16 1975-10-15 Adhesively attached absorbent product
IE2243/75A IE41811B1 (en) 1974-10-16 1975-10-15 Adhesively attached absorbent product
ZA756523A ZA756523B (en) 1974-10-16 1975-10-15 Adhesively attached absorbent product
JP50123327A JPS5913212B2 (ja) 1974-10-16 1975-10-15 接着剤により取り付ける吸収材製品
DE19752546208 DE2546208A1 (de) 1974-10-16 1975-10-15 Absorbierendes produkt mit klebebefestigung und verfahren zu seiner herstellung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US515387A US3913580A (en) 1974-10-16 1974-10-16 Adhesively attached absorbent product

Publications (1)

Publication Number Publication Date
US3913580A true US3913580A (en) 1975-10-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US515387A Expired - Lifetime US3913580A (en) 1974-10-16 1974-10-16 Adhesively attached absorbent product

Country Status (6)

Country Link
US (1) US3913580A (enrdf_load_stackoverflow)
JP (1) JPS5913212B2 (enrdf_load_stackoverflow)
CA (1) CA1056103A (enrdf_load_stackoverflow)
DE (1) DE2546208A1 (enrdf_load_stackoverflow)
IE (1) IE41811B1 (enrdf_load_stackoverflow)
ZA (1) ZA756523B (enrdf_load_stackoverflow)

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2649039A1 (de) * 1975-10-30 1977-05-05 Procter & Gamble Zusammenhaengende einteilige wegwerfwindel und verfahren zu ihrer herstellung
US4055182A (en) * 1975-10-08 1977-10-25 Colgate-Palmolive Company Disposable diaper reinforcement
US4186743A (en) * 1978-02-28 1980-02-05 Personal Products Company Perfuming self-adhering napkins
US4344426A (en) * 1979-12-10 1982-08-17 Tempo Sanys Sterilizable surgical pad
US4376440A (en) * 1980-08-05 1983-03-15 Kimberly-Clark Corporation Sanitary napkin with adhesive attachment means
EP0106473A1 (en) * 1982-09-02 1984-04-25 Personal Products Company Embossed panty liner
US4475913A (en) * 1982-07-06 1984-10-09 Kimberly-Clark Corporation Sanitary napkin with soft edges
US4596570A (en) * 1985-08-29 1986-06-24 Personal Products Company Napkin with extendable tabs
EP0176305A3 (en) * 1984-09-17 1988-05-18 The Procter & Gamble Company Disposable waste-containment garment
US4883479A (en) * 1986-09-26 1989-11-28 Colgate-Palmolive Company Absorbent napkin, particularly for infant's diaper pads
US5397317A (en) * 1993-12-16 1995-03-14 Procter And Gamble Company Disposable absorbent article core integrity support
EP0630631A3 (en) * 1993-06-22 1995-05-31 Uni Charm Corp Disposable underwear.
US5429630A (en) * 1992-05-29 1995-07-04 Kimberly-Clark Corporation Absorbent article and a method of removing said article from an undergarment
US5453296A (en) * 1993-05-04 1995-09-26 Mcneil-Ppc, Inc. Method for making an absorbent product having integrally protected adhesive
US5460624A (en) * 1994-05-02 1995-10-24 The Procter & Gamble Company Sanitary napkin
US5578026A (en) * 1992-06-30 1996-11-26 The Procter & Gamble Company Absorbent article having a unitary release material
WO1997009953A1 (en) * 1994-09-07 1997-03-20 The Procter & Gamble Company Process for making disposable articles in a back to back configuration
US5743897A (en) * 1991-10-01 1998-04-28 The Procter And Gamble Company Absorbent article having a self releasable adhesive securement means
US5788686A (en) * 1994-04-28 1998-08-04 The Procter & Gamble Company Absorbent article having a coversheet with extendible flaps
US5860965A (en) * 1991-10-01 1999-01-19 The Procter & Gamble Company Absorbent article having a releasable adhesive patch
US6387084B1 (en) 1992-09-30 2002-05-14 Kimberly-Clark Worldwide, Inc. Sanitary napkin with garment attachment panels
US6632207B2 (en) * 2000-09-06 2003-10-14 Johnson & Johnson Industria E Comercio Ltda. Intimate napkin
US6902552B2 (en) 1992-09-30 2005-06-07 Kimberly-Clark Worldwide, Inc. Curved sanitary napkin with garment attachment panels
US8231590B2 (en) 2003-12-30 2012-07-31 Kimberly-Clark Worldwide, Inc. Visually coordinated absorbent product
WO2014155216A1 (en) 2013-03-28 2014-10-02 Kimberly-Clark Worldwide, Inc. Coordinated apertured and embossed topsheet layer materials, and absorbent articles containing such
US8986273B2 (en) 2011-11-10 2015-03-24 Kimberly-Clark Worldwide, Inc. Absorbent personal care article having intermeshing flaps
US9066837B2 (en) 2009-10-30 2015-06-30 Kimberly-Clark Worldwide, Inc. Absorbent article with annular absorbent member
WO2015190965A1 (en) * 2014-06-13 2015-12-17 Sca Hygiene Products Ab Method for forming a wrapping sheet having improved sealing
US20160113825A1 (en) * 2014-10-24 2016-04-28 The Procter & Gamble Company Absorbent article with core-to-backsheet glue pattern comprising two glues
US9649233B2 (en) 2012-04-25 2017-05-16 Kimberly-Clark Worldwide, Inc. Absorbent personal care articles having longitudinally oriented layers in discrete portions
US9834355B2 (en) 2014-06-13 2017-12-05 Sca Hygiene Products Ab Packaging unit having improved sealing, and a method for forming such a packaging unit
US9993374B2 (en) 2011-11-10 2018-06-12 Kimberly-Clark Worldwide, Inc. Absorbent personal care article having intermeshing flaps
US10017309B2 (en) 2014-06-13 2018-07-10 Sca Hygiene Products Ab Packaging unit for hygiene articles and a method of forming a packaging unit
US10086989B2 (en) 2014-06-13 2018-10-02 Sca Hygiene Products Ab Packaging unit for hygiene articles and a method of forming a packaging unit
US10213347B2 (en) 2012-12-04 2019-02-26 Kimberly-Clark Worldwide, Inc. Absorbent article with an apertured multi-layered topsheet
US10285877B2 (en) 2014-06-13 2019-05-14 Essity Hygiene And Health Aktiebolag Ab Packaging unit having improved sealing and a user prompting device, and a method for forming such a packaging unit
US20220016669A1 (en) * 2016-07-08 2022-01-20 Macdonald, Dettwiler And Associates Inc. System and Method for Automated Artificial Vision Guided Dispensing Viscous Fluids for Caulking and Sealing Operations

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4505706A (en) * 1983-01-14 1985-03-19 Colgate-Palmolive Company Disposable adult diaper
DE3411457C2 (de) * 1984-03-28 1987-01-02 Vereinigte Papierwerke Schickedanz & Co, 8500 Nürnberg Damenbinde oder Slipeinlage
DE3605842A1 (de) * 1986-02-22 1987-08-27 Ver Papierwerke Ag Hygienischer zellstoffartikel mit haftklebeschicht

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US2294347A (en) * 1938-12-24 1942-08-25 Stein Hall Mfg Co Cloth backed paper sealing tape
US2295439A (en) * 1939-02-08 1942-09-08 Int Cellucotton Products Sanitary napkin
US2625161A (en) * 1952-07-12 1953-01-13 Personal Products Corp Sanitary napkin
US3065715A (en) * 1960-12-13 1962-11-27 Mackniesh Frank Trolley assembly
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
US3400717A (en) * 1965-05-21 1968-09-10 Colgate Palmolive Co Diapers
US3665923A (en) * 1970-02-05 1972-05-30 Kimberly Clark Co Flushable sanitary napkin
US3616797A (en) * 1970-02-06 1971-11-02 Kimberly Clark Co Flushable wrapper for absorbent pads
US3727615A (en) * 1971-11-26 1973-04-17 Kimberly Clark Co Soft, drapable nonwoven material

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055182A (en) * 1975-10-08 1977-10-25 Colgate-Palmolive Company Disposable diaper reinforcement
DE2649039A1 (de) * 1975-10-30 1977-05-05 Procter & Gamble Zusammenhaengende einteilige wegwerfwindel und verfahren zu ihrer herstellung
US4069822A (en) * 1975-10-30 1978-01-24 The Procter & Gamble Company Porous fibrous web to a substrate and articles therefrom
US4186743A (en) * 1978-02-28 1980-02-05 Personal Products Company Perfuming self-adhering napkins
US4344426A (en) * 1979-12-10 1982-08-17 Tempo Sanys Sterilizable surgical pad
US4376440A (en) * 1980-08-05 1983-03-15 Kimberly-Clark Corporation Sanitary napkin with adhesive attachment means
US4475913A (en) * 1982-07-06 1984-10-09 Kimberly-Clark Corporation Sanitary napkin with soft edges
EP0106473A1 (en) * 1982-09-02 1984-04-25 Personal Products Company Embossed panty liner
EP0176305A3 (en) * 1984-09-17 1988-05-18 The Procter & Gamble Company Disposable waste-containment garment
US4596570A (en) * 1985-08-29 1986-06-24 Personal Products Company Napkin with extendable tabs
US4883479A (en) * 1986-09-26 1989-11-28 Colgate-Palmolive Company Absorbent napkin, particularly for infant's diaper pads
US5860965A (en) * 1991-10-01 1999-01-19 The Procter & Gamble Company Absorbent article having a releasable adhesive patch
US5743897A (en) * 1991-10-01 1998-04-28 The Procter And Gamble Company Absorbent article having a self releasable adhesive securement means
US5429630A (en) * 1992-05-29 1995-07-04 Kimberly-Clark Corporation Absorbent article and a method of removing said article from an undergarment
US5578026A (en) * 1992-06-30 1996-11-26 The Procter & Gamble Company Absorbent article having a unitary release material
US7063689B2 (en) 1992-09-30 2006-06-20 Kimberly-Clark Worldwide, Inc. Sanitary napkin with garment attachment panels
US6902552B2 (en) 1992-09-30 2005-06-07 Kimberly-Clark Worldwide, Inc. Curved sanitary napkin with garment attachment panels
US6387084B1 (en) 1992-09-30 2002-05-14 Kimberly-Clark Worldwide, Inc. Sanitary napkin with garment attachment panels
US5453296A (en) * 1993-05-04 1995-09-26 Mcneil-Ppc, Inc. Method for making an absorbent product having integrally protected adhesive
EP0630631A3 (en) * 1993-06-22 1995-05-31 Uni Charm Corp Disposable underwear.
US5397317A (en) * 1993-12-16 1995-03-14 Procter And Gamble Company Disposable absorbent article core integrity support
US5788686A (en) * 1994-04-28 1998-08-04 The Procter & Gamble Company Absorbent article having a coversheet with extendible flaps
US5460624A (en) * 1994-05-02 1995-10-24 The Procter & Gamble Company Sanitary napkin
WO1997009953A1 (en) * 1994-09-07 1997-03-20 The Procter & Gamble Company Process for making disposable articles in a back to back configuration
CZ303664B6 (cs) * 2000-09-06 2013-02-20 Johnson & Johnson Industria E Comercio Ltda Menstruacní vlozka
EP1190691B2 (en) † 2000-09-06 2016-11-30 Johnson & Johnson Industrial Ltda. Intimate napkin
US6632207B2 (en) * 2000-09-06 2003-10-14 Johnson & Johnson Industria E Comercio Ltda. Intimate napkin
US8231590B2 (en) 2003-12-30 2012-07-31 Kimberly-Clark Worldwide, Inc. Visually coordinated absorbent product
US8936584B2 (en) 2003-12-30 2015-01-20 Kimberly-Clark Worldwide, Inc. Visually-coordinated absorbent product
US9066837B2 (en) 2009-10-30 2015-06-30 Kimberly-Clark Worldwide, Inc. Absorbent article with annular absorbent member
US8986273B2 (en) 2011-11-10 2015-03-24 Kimberly-Clark Worldwide, Inc. Absorbent personal care article having intermeshing flaps
US9993374B2 (en) 2011-11-10 2018-06-12 Kimberly-Clark Worldwide, Inc. Absorbent personal care article having intermeshing flaps
US9649233B2 (en) 2012-04-25 2017-05-16 Kimberly-Clark Worldwide, Inc. Absorbent personal care articles having longitudinally oriented layers in discrete portions
US10213347B2 (en) 2012-12-04 2019-02-26 Kimberly-Clark Worldwide, Inc. Absorbent article with an apertured multi-layered topsheet
WO2014155216A1 (en) 2013-03-28 2014-10-02 Kimberly-Clark Worldwide, Inc. Coordinated apertured and embossed topsheet layer materials, and absorbent articles containing such
US10086989B2 (en) 2014-06-13 2018-10-02 Sca Hygiene Products Ab Packaging unit for hygiene articles and a method of forming a packaging unit
RU2644113C1 (ru) * 2014-06-13 2018-02-07 Ска Хайджин Продактс Аб Способ образования обертывающего листа, имеющего улучшенную герметизирующую способность
US9943448B2 (en) 2014-06-13 2018-04-17 Sca Hygiene Products Ab Method for forming a wrapping sheet having improved sealing
WO2015190965A1 (en) * 2014-06-13 2015-12-17 Sca Hygiene Products Ab Method for forming a wrapping sheet having improved sealing
US10017309B2 (en) 2014-06-13 2018-07-10 Sca Hygiene Products Ab Packaging unit for hygiene articles and a method of forming a packaging unit
US9834355B2 (en) 2014-06-13 2017-12-05 Sca Hygiene Products Ab Packaging unit having improved sealing, and a method for forming such a packaging unit
US10285877B2 (en) 2014-06-13 2019-05-14 Essity Hygiene And Health Aktiebolag Ab Packaging unit having improved sealing and a user prompting device, and a method for forming such a packaging unit
US20160113825A1 (en) * 2014-10-24 2016-04-28 The Procter & Gamble Company Absorbent article with core-to-backsheet glue pattern comprising two glues
US10285876B2 (en) * 2014-10-24 2019-05-14 The Procter & Gamble Company Absorbent article with core-to-backsheet glue pattern comprising two glues
US11364159B2 (en) 2014-10-24 2022-06-21 The Procter & Gamble Company Absorbent article with core-to-backsheet glue pattern comprising two glues
US11813152B2 (en) 2014-10-24 2023-11-14 The Procter And Gamble Company Absorbent article with core-to-backsheet glue pattern comprising two glues
US20220016669A1 (en) * 2016-07-08 2022-01-20 Macdonald, Dettwiler And Associates Inc. System and Method for Automated Artificial Vision Guided Dispensing Viscous Fluids for Caulking and Sealing Operations
US11969751B2 (en) * 2016-07-08 2024-04-30 Macdonald, Dettwiler And Associates Inc. System and method for automated artificial vision guided dispensing viscous fluids for caulking and sealing operations

Also Published As

Publication number Publication date
ZA756523B (en) 1977-05-25
IE41811L (en) 1976-04-16
JPS5185297A (enrdf_load_stackoverflow) 1976-07-26
IE41811B1 (en) 1980-03-26
JPS5913212B2 (ja) 1984-03-28
AU8508475A (en) 1977-03-31
CA1056103A (en) 1979-06-12
DE2546208A1 (de) 1976-04-22

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Owner name: MCNEIL-PPC, INC.

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Owner name: PERSONAL PRODUCTS COMPANY, A NJ CORP., NEW JERSEY

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