WO1992021309A1 - Fixations de couches avec pattes de fixation incorporees - Google Patents

Fixations de couches avec pattes de fixation incorporees Download PDF

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Publication number
WO1992021309A1
WO1992021309A1 PCT/US1992/002696 US9202696W WO9221309A1 WO 1992021309 A1 WO1992021309 A1 WO 1992021309A1 US 9202696 W US9202696 W US 9202696W WO 9221309 A1 WO9221309 A1 WO 9221309A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
deployment
diaper
tab means
adhesive
Prior art date
Application number
PCT/US1992/002696
Other languages
English (en)
Inventor
Paul Dhondt
Michel Coomans
Original Assignee
Avery Dennison Corporation
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 Avery Dennison Corporation filed Critical Avery Dennison Corporation
Publication of WO1992021309A1 publication Critical patent/WO1992021309A1/fr

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Classifications

    • 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

Definitions

  • This invention relates to diaper fasteners formed from laminate web constructions of diaper fastener stock of the kind adapted to be supplied to a diaper manufacturer and to be separated by the manufacturer into individual diaper fastener constructions and applied to individual diapers, usually two fasteners to a diaper.
  • the invention particularly relates to means forming part of the diaper and providing novel conveniently manipulated fingerlifts on diaper fasteners formed from the diaper fastener stock.
  • the novel fingerlifts of the invention may be referred to as "built-in end tabs.”
  • Another known arrangement is a strip lamination, as in U.S. Patent 4,726,971 to Pape et al.
  • the laminated strip extends outwardly of the width of the diaper fastener stock, so that when the same is rolled and transported, the laminated strip can be easily damaged. Also, the strip creates local thickness variations in roll thickness. Also, there is adhesive immediately adjacent the laminated strip, and during lifting one can easily touch and contaminate that adhesive.
  • the present invention provides diaper fasteners having fingerlifts which are easy and convenient to use and which overcome the above problems.
  • the fingerlifts of the invention are formed in diaper fasteners of the type comprising at least two tape substrates having first and second length portions.
  • One substrate constitutes an anchoring substrate designed to be folded around the edge of a diaper and to be permanently adhered, at its first and second length portions, to both sides of the diaper.
  • One or more additional substrates extend along corresponding first and second length portions, and their second length portions comprise deployment means separable from the second length portion of the first or anchoring substrate for deployment and engagement with another part of the diaper.
  • end-tab means is mounted on at least one of the one or more additional substrates, with an adhesive-free zone between the point of mounting and the substrate adhesive associated with that substrate.
  • the end-tab means is located within the length of the longest one of the one or more additional substrates. In the undeployed condition of the diaper fastener, the end-tab means extends downwardly past at least a major portion of the thickness of the substrate immediately below the one on which the end-tab means is mounted, but not below the adhesive coating on the first substrate.
  • the result is a diaper fastener having a conveniently usable fingerlift which overcomes the problems of prior art fingerlifts as discussed above.
  • the fingerlifts of the present invention are consistent with high speed manufacture of diaper fastener stock, allow the stock to be rolled in a distortion-free manner, and are consistent with high speed forming and dispensing of the fasteners on a diaper fastener line.
  • FIGS. 1 and 2 are schematic transverse elevations of elements of diaper fastener stock to be combined to provide stock constructed according to the invention, illustrated as if they had been cut transversely to machine direction (machine direction being into the paper) for purposes of consistency with the later views.
  • FIG. 2A is a view similar to the right end of FIG. 2, but relating to another embodiment.
  • FIG. 3 illustrates the stock elements of FIGS. 1 and 2 combined to provide diaper tab stock constructed according to the invention and then cut transversely to machine direction into an individual fastener.
  • FIG. 3A is a view similar to the right end of FIG 3, but relating to the same embodiment as does FIG. 2A.
  • FIG. 4 is a view of the fastener shown in FIG. 3 as folded and fastened around the edge of a diaper by the diaper manufacturer.
  • FIG. 5 is a view of the same fastener, now peeled to form a tab which is joined to another portion of the diaper.
  • the individual fastener 10 seen in FIG. 3 is, in effect, a cross-sectional view of the diaper fastener stock from which the individual fastener has been formed by transverse cuts.
  • This stock consists of initially flat but flexible first and second substrates 12 and 14 suitable to be formed in long passes along the machine direction (into the paper as viewed in FIGS. 1- 3) of a coating and laminating line without the necessity for folding operations and completely by web coating, slitting and web-to-web laminating operations, and suitable for high-speed dispensing on automatic equipment.
  • the first or anchoring substrate 12 bears first substrate adhesive 16 on its underside.
  • the first substrate 12 and the first substrate adhesive 16 extend, transversely to machine direction, along first and second length portions 21 and 22 respectively of the web construction.
  • the second or additional substrate 14 bears second substrate adhesive 18 on its underside and also extends along the first and second length portions 21 and 22.
  • Release means for the second substrate is carried on the first substrate and may be a release coat 24. This release means extends along the second length portion 22 but not significantly along the first length portion.
  • the adhesive 18 may be patterned to leave a gap 19.
  • the substrate 12 may be slit to leave a gap 13 and a end- tab portion 15.
  • the release coat 24 may be patterned so as to not extend to the end-tab portion 15.
  • Suitable release means may be provided to allow the construction as so far described to be self- wound for storage and shipment.
  • Such release means may be a release coat 26 on the second substrate 14.
  • the first substrate adhesive 16 is releasably supported against the release coat 26, and readily separates therefrom when the roll is subsequently unwound on a diaper manufacturing line.
  • the diaper fastener stock is unwound and cut transversely to form a series of individual fasteners which are applied, usually in pairs, to individual diapers by being folded around a diaper edge.
  • FIG. 4 shows an individual fastener cut from the stock described above applied around the edge of a diaper 30. This is the undeployed condition of the diaper fastener.
  • FIG. 5 illustrates the deployed condition of the diaper fastener.
  • each diaper fastener is moved from undeployed to deployed condition.
  • the second length portion of the second substrate 14 constitutes deployment means separable from the second length portion of the first or anchoring substrate 12 for deployment as shown in FIG. 5 and adherence to another portion of the diaper (not shown) by application of the exposed second length portion of the second substrate adhesive 18 to such other diaper portion.
  • the end-tab means 20 is at the free end of such deployment means.
  • FIGS. 2A and 3A show a variant similar to the example described above, but with certain changes.
  • the first substrate adhesive 16 is extended across the entire second length portion of the first substrate 12 to an end portion 16a associated with the end-tab portion 15, or the first substrate adhesive is patterned to provide such end portion 16a.
  • the assembly comprising the end-tab portion 15 and adhesive end portion 16a are inverted to present the adhesive end portions 16a and 18a to each other, resulting in the end tab construction 20a seen in FIG. 3A.
  • the thickness of the end-tab end of the construction is as great as that of the remainder of the width of the diaper fastener stock, which may be desirable for best protection and support of a self-wound roll of the stock.
  • FIG. 6 shows another variant in which the invention is incorporated in a diaper fastener of the general type shown in U.S. Patent 4,020,842 to Richman et al. the disclosure of which is adapted by reference as if fully repeated herein.
  • This type of fastener has more than one additional substrate and correspondingly more than one deployment means.
  • a first or anchoring substrate 12 and a second or additional substrate 14, and associated first and second substrate adhesives 16 and 18, are provided similarly to the construction of FIG. 3.
  • a third substrate 34 (constituting a second additional substrate) is provided along with associated third substrate adhesive 36.
  • a release means such as the release coat 37 is provided along the entire length of the substrate for self-winding purposes.
  • the release coat 26 of the FIG. 3 construction is replaced by shortened release coat 26a which extends along the second length portion corresponding to length portion 22 in FIG. 3, but not significantly along the first length portion corresponding to length portion 21 in FIG. 3.
  • the substrate adhesives 18 and 36 are interrupted at the fold-around portion of the diaper fastener by adhesive gaps 18g and 36g.
  • the second substrate 14 of the FIG. 6 construction is interrupted by a slit or small gap 32.
  • the general operation of the construction in the manner of deployment, reopening and reclosing is the same as that of the aforesaid Richman et al. patent.
  • end-tab means of the general kind intended by the present invention is provided on at least one of the deploying substrates, in this case end-tab means 20b on substrate 14.
  • the end tab for the deployment portion of substrate 34 is the adhesive-free edge at the free end of that substrate. Since this is the secondary or reclosure life edge, convenience of use and minimized possibility of adhesive contamination are less important than at the primary lift edge associated with the end-tab means 20b.
  • the end-tab means 20b of the construction of FIG. 6 is not formed from part of the first substrate 12 but rather comprises a separate special tape 38 and associated tape adhesive 40 that are combined with the substrate 14, preferably at or about the time that the substrates 12 and 14 are combined. That variant of the invention can also be used in the constructions of FIGS. 3 or 3A in place of the end-tab means 20 or 20a.
  • the substrate adhesives can include additional patterning.
  • the second substrate adhesive 18 can be provided with a gap (not shown) similar to the gap 18g of the FIG. 6 construction.
  • the various slitting, patterning and combining operations at the fingerlift end of the diaper fastener stock can be performed in duplicate at the web center on a stock manufacturing line, with the slitting, patterning and combining on one lateral side of the infed webs being done in mirror image to the same operations on the other side.
  • the width of the infed webs is at least double the width of the resulting diaper fastener stock.
  • the end- tab means 20 is mounted at the free end of the second substrate 14 with an adhesive-free zone, represented by the gap 19, between the point of mounting and the majority of the second substrate adhesive 18.
  • the end-tab means 20a and 20b in relation to their associated fastener structures.
  • the thickness of the end-tab means extends past at least a portion of the thickness of the substrate immediately adjacent the substrate on which the end-tab means is mounted, but not past the thickness of the first substrate adhesive.
  • the thickness of end- tab means 20 extends past at least a portion of the thickness of substrate 12, the substrate immediately adjacent to substrate 14 on which end-tab means 20 is mounted, but not below the thickness of first substrate adhesive 16.
  • end-tab means 20a and 20b in relation to their associated fastener structures. It is further to be noted that in all instances the end-tab means is located within the length of the longest of the one or more additional or deployment substrates.
  • the result is a diaper tab fastener with a fingerlift superior to those of the prior art.
  • the end- tab means of the invention can be readily and conveniently grasped and manipulated by the person applying the diaper. The possibility of touching and contaminating the fastening adhesive (the exposed second substrate adhesive 18 in the illustrated example) is minimized.
  • the end-tab means can be readily fabricated on a diaper fastener stock production line by simple patterning and slitting steps that are fully compatible with economical high speed production. The stock can be self-rolled in smooth, uniform rolls that are free of local high spots and resulting distortions.

Abstract

Un substrat (14) en liaison avec le bout déployable d'une fixation (12) de couche possède un support de pattes (15) incorporé avec une zone (19) exempte d'adhésif entre le support des pattes (15) et la plus grande partie du substrat adhésif associé avec le substrat (18). En position non déployée de la fixation, l'épaisseur du support des pattes (15) dépasse sur au moins une partie de l'épaisseur du substrat (12) immédiatement adjacent à celui sur lequel le support des pattes (15) est monté, mais ne dépasse pas sur l'adhésif (16) associé avec le substrat d'ancrage (12).
PCT/US1992/002696 1991-06-05 1992-04-03 Fixations de couches avec pattes de fixation incorporees WO1992021309A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71069091A 1991-06-05 1991-06-05
US710,690 1991-06-05

Publications (1)

Publication Number Publication Date
WO1992021309A1 true WO1992021309A1 (fr) 1992-12-10

Family

ID=24855106

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/002696 WO1992021309A1 (fr) 1991-06-05 1992-04-03 Fixations de couches avec pattes de fixation incorporees

Country Status (4)

Country Link
CN (1) CN1067371A (fr)
AU (1) AU1987792A (fr)
IL (1) IL101597A0 (fr)
WO (1) WO1992021309A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997028774A1 (fr) * 1996-02-09 1997-08-14 Avery Dennison Corporation Couches-culottes presentant des fermetures mecaniques prealablement fixees

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522853A (en) * 1982-04-30 1985-06-11 Beiersdorf Aktiengesellschaft Elastic diaper-pants fastening

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522853A (en) * 1982-04-30 1985-06-11 Beiersdorf Aktiengesellschaft Elastic diaper-pants fastening

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997028774A1 (fr) * 1996-02-09 1997-08-14 Avery Dennison Corporation Couches-culottes presentant des fermetures mecaniques prealablement fixees

Also Published As

Publication number Publication date
IL101597A0 (en) 1992-12-30
AU1987792A (en) 1993-01-08
CN1067371A (zh) 1992-12-30

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