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Dokumentenidentifikation EP1073560 07.08.2003
EP-Veröffentlichungsnummer 1073560
Titel VORRICHTUNG ZUM AUFTRAGEN VON KORREKTURFLÜSSIGKEIT
Anmelder Berol Corp., Freeport, Ill., US
Erfinder PANDA, Aparajit, Shrewsbury, US;
BORELLY-SANBORN, Kimberly, South Weymouth, US
Vertreter BOEHMERT & BOEHMERT, 28209 Bremen
DE-Aktenzeichen 69909278
Vertragsstaaten DE, ES, FR, GB, IT
Sprache des Dokument EN
EP-Anmeldetag 20.04.1999
EP-Aktenzeichen 999176316
WO-Anmeldetag 20.04.1999
PCT-Aktenzeichen PCT/US99/08610
WO-Veröffentlichungsnummer 0099054151
WO-Veröffentlichungsdatum 28.10.1999
EP-Offenlegungsdatum 07.02.2001
EP date of grant 02.07.2003
Veröffentlichungstag im Patentblatt 07.08.2003
IPC-Hauptklasse B43L 19/00
IPC-Nebenklasse A45D 40/26   

Beschreibung[en]

The invention relates to applicators for correction fluids.

Correction fluids are used for correcting handwritten, typewritten or photocopied markings on paper. Generally, correction fluids are applied to a paper surface in liquid form. After application, the fluids harden to a film which can effectively cover erroneous markings on the surface and can receive a corrected marking. Correction fluids typically contain a resin that provides the flexible film, and an opacifying pigment, usually titanium dioxide, dispersed in a liquid. The liquid may be water or an organic solvent.

Correction fluids are often supplied in a small container with an applicator brush attached to the cap through a stem. A user unscrews the cap from the container and withdraws the brush loaded with correction fluid. The user then contacts the erroneous marking with the brush, and correction fluid is transferred to the substrate to cover the marking.

WO 97/21554 shows an applicator for applying fluid to a surface. The applicator includes a stem, a connection part, and an application element. The application element is the form of a molded member, sock or pad of open celled foam.

The invention relates to an applicator that can be used to apply correction fluid. The applicator preferably includes a stem, an applicator tip including foam, and preferably a flexible material, i.e., a flexor, within the tip. The applicator is easy to use and preferably can be inserted into a correction fluid container in the same general manner as brush applicators. The applicator provides an even laydown of correction fluid on a substrate, resulting in good correction quality. The applicator has good durability and facilitates precise correction.

In one aspect, the invention relates to an applicator, including a stem and an applicator tip including foam, having a flexibility of at least 1.296 mm of deflection per Newton (0.0005 inch of deflection per gram of force) preferably at least 5.184 mm of deflection per Newton (0.002 inch of deflection per gram of force.) measured at a deflection distance of 1.27 min (0.05 inch).

The invention further relates to correction fluid products as defined in claim 1, including a body defining a reservoir and having an opening. The reservoir includes a correction fluid, and the applicator is inserted through the opening so that the portion is in contact with the correction fluid. Preferably, the product also includes an insert through the opening, through which the applicator passes during use. Preferred inserts include a narrowed neck portion that removes excess correction fluid when the applicator tip is withdrawn from the reservoir.

The invention further relates to an applicator having an applicator tip including foam, a correction fluid reservoir, including correction fluid, from which the correction fluid is fed to the applicator tip. The applicator has a flexibility of at least 1.296 mm of deflection per Newton (0.0005 inch of deflection per gram of force) measured at a deflection distance of 1.27 mm (0.05 inch). The applicator may also include a removable enclosure (e.g., a cap) for the tip.

Other features and advantages of the invention will be apparent from the description of the preferred embodiment thereof, and from the claims.

  • Fig. 1 is an exploded view of a correction fluid container including a correction fluid;
  • Fig. 2 is a side view of the end portion (including the applicator tip) of the foam applicator in Fig. 1;
  • Fig. 3 is a side view of the applicator tip removed from the applicator in Fig. 2, with the portion of the flexor within the tip shown in broken lines;
  • Fig. 4 is a front view of the end portion of the foam applicator tip in Fig. 3;
  • Fig. 5 is a side view of a second applicator, with the flexor shown in broken lines;
  • Fig. 6 is a side view of a third applicator, with the flexor shown in broken lines; and
  • Fig. 7 is a rear view of the applicator in Fig. 6.

Referring to Figs. 1-4, a correction fluid container 10 includes a cap 12, an applicator 14, a body 16 including a correction fluid reservoir, and an insert 18.

Applicator 14 includes a stem 20, and an applicator tip 22. The applicator tip includes a foam portion 24 enclosing a flexor 26. The applicator has a flexibility of at least 1.296 mm of deflection per Newton (0.0005 inch of deflection per gram of force), preferably at least 5.184 mm of deflection per Newton (0.002 inch of deflection per gram of force), measured as described below. The flexibility of the applicator depends on a number of factors, including the stiffness of the stem; the composition, length, width, and thickness of the flexor; and the chemical composition and thickness of the foam portion.

The stiffness of the stem depends on the composition, length, and diameter of the stem. Generally, the less stiff the stem, the more flexible the applicator. Stems composed of softer materials are less stiff than stems composed of harder materials, and longer stems are less stiff than shorter stems. Stems may be made of, for example, polymeric materials such as a low density and/or high density polyethylene or polypropylene. The stem may have a length, for example, of between 2 cm and 15 cm, and preferably between 2 cm and 10 cm. It also may have a diameter of between, for example, 0.1 cm and 2 cm, and preferably between 0.2 cm and 0.8 cm. Stem 20 has a length of 4.1 cm and a diameter of 0.31 cm.

Flexor 26 includes an extension 28 that fits into the hollow end of stem 20.

Generally, the softer the foam and the thinner the applicator tip the greater the flexibility of the foam applicator. The foam may be, for example, an open cell foam having a pore size, for example, of between 7 ppcm and 52 ppcm (20 ppi and 130 ppi) preferably between 31 ppcm and 48 ppcm (80 ppi and 120 ppi) and may be, for example, a polyether/polyurethane, polyester/polyurethane, polyether, or polyester foam. The foam can have a density, for example, in the range of 25.6 kg/m3 to 240.3 kg/m3 (1.6 lb/ft3 to 15.0 lb/ft3), a compression deflection (CLD) of 25% R (radius) at 345 Pa - 34.5 kPa ((0.05-5.0) psi) and a CLD of 65% at 1.38 kPa-68.9 kPa ((0.2-10) psi). A preferred foam is a quenched polyester polyurethane foam having a density of 29.6 kg/cm3 (1.85 lb/ft3), a pore size of 31 ppcm and 48 ppcm (80 ppi to 120 ppi) a CLD of 25% R at 1.72 kPa (0.25 psi.) and a CLD of 65% R at 3.1 kPa (0.45 psi.)

The foam portion (including the enclosed flexor) may have a thickness (t1), for example, of between 0.16 cm and 1.27 cm, a length (1) of between 0.3 cm and 2.0 cm, and a width (w) between 0.2 cm and 1.0 cm. Foam portion 24 has a thickness (t1) (at midpoint) of about 0.44 cm, and a length (1) of about 0.9 cm. Foam portion 24 is tapered and has a thickness at its base of about 0.44 cm and a thickness towards its tip of about 0.34 cm.

Generally, the softer the composition of the flexor the greater the flexibility of the foam applicator. The flexor may be composed, for example, of a composite of linear low density polyethylene and a thermoplastic olefin having a very high softness and low modulus (e.g., Adflex KS-359P, available from Mobil), low density polyethylene, high density polyethylene, polypropylene, or nylon. In addition, as a general rule, thinner flexors provide more flexible foam applicators. The flexor may have, for example, a width (w) of between 0.02 cm and 0.15 cm, and a thickness (t) of between 0.1 cm and 1.0 cm. Flexor 26 has a width (w) of 0.06 cm. Flexor 26 is tapered but has a thickness of about 0.25 cm at its mid-point.

Foam applicator 14 has an angled chisel-shaped applicator surface 30 that includes a point 32. The angle (α in the Figure) preferably is between 15° and 60° (e.g., 30°). The long applicator side surface can be used to apply correction fluid over words; the point or straight edge of 32 allows a user to easily apply correction fluid to individual letters,

Insert 18 may be composed, for example, of a high density polyethylene. The insert has a narrowed neck region 30 that may have an inside diameter of between 3.0 mm and 5.0 mm (e.g., 3.8 mm), and may have a length of between 5 mm and 40 mm (e.g., 25 mm). When portion 24 is removed (wiped off) from the correction fluid reservoir for use, excess correction fluid is removed by narrowed neck 34. When portion 24 is reinserted into the fluid reservoir after use, any excess correction fluid that comes off portion 24 during reinsertion generally is accommodated by the portion of insert 18 above the narrowed neck, thus avoiding spillage of correction fluid.

Applicator 10 may be used with organic solvent-based or water-based correction fluids. In addition to the liquid vehicle, correction fluids may include an opacifying agent such as titanium dioxide, a film-forming polymer, and various other standard ingredients. Correction fluids may have a viscosity, for example, of between 10 cps and 2000 cps, preferably between 30 cps and 1000 cps, at 20 rpm using a Brookfield Viscometer. Preferred correction fluids are described in, for example, U.S. Patent Nos. 5,199,976 and 5,306,755, which are incorporated by reference herein.

Referring to Fig. 5, an applicator 34 has a design similar to applicator 14. Applicator 34, unlike applicator 14, does not have a tapered foam portion or tapered flexor.

Referring to Figs. 6 and 7, an alternative applicator 36 has a spear-shaped tip and includes a stem 38, a flexor 40, and a foam portion 42.

The flexibility of an applicator can be measured using an Instron Model 1122 Compression Tester. The capped end of the applicator is attached to a fixed stand, having a rotating fixture to vary the angle of attachment. The angle is set at 40° so that the foam-tip is just underneath the vertical cylinder (probe) of the tester, having a diameter of 15 cm. This probe is then moved downwards slowly at a controlled rate of 0.13 cm/min while pressing the foam-tip during its downward movement. The force generated by the probe to deflect the foam-tip and the actual deflection of the foam-tip were continually monitored and transmitted to a recorder for recording on a X-Y graph. The flexibility (calculated from the graph) corresponds to the ratio of deflection distance to the applied force, i.e., the slope of deflection vs. applied force graph. The measurements are conducted at various deflection distances, e.g., 1.27 mm, 2.54 mm, 3.81 mm, 5.08 mm and 6.35 mm (0.05", 0.1", 0.15", 0.20" and 0.25").

The flexibility of 12 applicators was measured according to this procedure. The results are shown below in Tables 1 and 2. "Spear" in the applicator in Figs. 6 and 7; "Chisel #1" is the applicator in Figs. 1-4; and "Chisel #2" is the applicator in Fig. 5.

Although the flexibility of the examples were measured at various deflection distances, "flexibility"(as that term is used in the claims) should be measured at a deflection distance of 1.27 mm (0.05").


Anspruch[de]
  1. Korrekturflüssigkeitsprodukt, welches umfaßt:
    • einen Körper, der ein Reservoir und eine Öffnung einschließt,
    • eine Korrekturflüssigkeit im Reservoir und
    • einen durch die Öffnung eingeführten Applikator, der einen Stiel und eine Applikatorspitze, die Schaum umfaßt, einschließt, wobei der Applikator eine Flexibilität von wenigstens 1,296 mm Biegung pro Newton (0,0005 Inch Biegung pro Gramm Kraft) besitzt, gemessen in einem Biegungsabstand von 1,27 mm (0,05 Inch).
  2. Produkt nach Anspruch 1, dadurch gekennzeichnet, daß der Stiel eine Länge zwischen 2 cm und 15 cm besitzt.
  3. Produkt nach Anspruch 1, dadurch gekennzeichnet, daß der Schaum einen gequenchten Schaum umfaßt.
  4. Produkt nach Anspruch 3, dadurch gekennzeichnet, daß der Schaum Polyurethan/Polyester umfaßt.
  5. Produkt nach Anspruch 1, dadurch gekennzeichnet, daß der Schaum ein Material umfaßt, das ausgewählt ist aus der Gruppe, die aus Polyurethan/Polyester und Polyurethan/Polyether besteht.
  6. Produkt nach Anspruch 1, dadurch gekennzeichnet, daß der Schaum gegenüber organischen Lösungsmitteln stabil ist.
  7. Produkt nach Anspruch 1, dadurch gekennzeichnet, daß die Applikatorspitze eine abgewinkelte, meißelförmige Kante besitzt.
  8. Produkt nach Anspruch 1, dadurch gekennzeichnet, daß die Applikatorspitze eine mittlere Dicke von zwischen 0,16 cm und 1,27 cm besitzt.
  9. Produkt nach Anspruch 1, dadurch gekennzeichnet, daß die Applikatorspitze weiter einen Flexor im Schaum umfaßt.
  10. Produkt nach Anspruch 1, dadurch gekennzeichnet, daß die Korrekturflüssigkeit organisches Lösungsmittel einschließt.
  11. Produkt nach Anspruch 1, dadurch gekennzeichnet, daß die Korrekturflüssigkeit eine Viskosität von zwischen 10 mPa.s (10 cps) und 2.000 mPa.s (2.000 cps) besitzt.
  12. Produkt nach Anspruch 1, dadurch gekennzeichnet, daß der Schaumteil eine mittlere Porengröße von zwischen 7 ppcm (20 ppi) und 52 ppcm (130 ppi) besitzt.
  13. Produkt nach Anspruch 1, dadurch gekennzeichnet, daß besagtes Produkt weiter einen Einsatz in der Öffnung umfaßt, durch den der Applikator während des Gebrauchs hindurchgeht, wobei der Einsatz einen verengten Halsabschnitt aufweist, der überschüssige Korrekturflüssigkeit von der Applikatorspitze entfernt, wenn die Applikatorspitze durch den Einsatz herausgezogen wird.
  14. Verfahren zum Aufbringen einer Korrekturflüssigkeit auf eine Oberfläche, um eine Markierung zu überdecken, unter Verwendung eines Applikators mit einer Flexibilität von wenigstens 1,296 mm Biegung pro Newton (0,0005 Inch Biegung pro Gramm Kraft), gemessen in einem Biegungsabstand von 1,27 mm (0,05 Inch), und der einen Stiel und eine Applikatorspitze einschließt, die einen Schaum einschließt, welches die Beladung der Applikatorspitze mit Korrekturflüssigkeit und das Inkontaktbringen der Oberfläche mit der Applikatorspitze, um Korrekturflüssigkeit über der Markierung aufzubringen, umfaßt.
  15. Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß der Applikator weiter einen Flexor im Schaum einschließt.
  16. Applikator zum Aufbringen einer Korrekturflüssigkeit auf ein Substrat, welcher

    eine Applikatorspitze, die einen Schaum einschließt, und

    ein Korrekturflüssigkeit enthaltendes Korrekturflüssigkeitsreservoir, aus dem Korrekturflüssigkeit zur Applikatorspitze zugeführt wird, umfaßt,

    wobei der Applikator eine Flexibilität von wenigstens 1,296 mm Biegung pro Newton (0,0005 Inch Biegung pro Gramm Kraft), gemessen in einem Biegungsabstand von 1,27 mm (0,05 Inch), besitzt.
  17. Applikator nach Anspruch 16, dadurch gekennzeichnet, daß er weiter eine abnehmbare Umhüllung für die Applikatorspitze umfaßt.
  18. Produkt nach Anspruch 1, dadurch gekennzeichnet, daß der Applikator eine Flexibilität von wenigstens 5,184 mm Biegung pro Newton (0,002 Inch Biegung pro Gramm Kraft), gemessen in einem Biegungsabstand von 1,27 mm (0,05 Inch), besitzt.
Anspruch[en]
  1. A correction fluid product, comprising

    a body including a reservoir and an opening,

    a correction fluid within the reservoir, and

    an applicator, inserted through the opening, including a stem and an applicator tip comprising foam, the applicator having a flexibility of at least 1.296 mm of deflection per Newton (0.0005 inch of deflection per gram of force) measured at a deflection distance of 1.27 mm (0.05 inch).
  2. The product of claim 1, wherein the stem has a length between 2 cm and 15 cm.
  3. The product of claim 1, wherein the foam comprises a quenched foam.
  4. The product of claim 3, wherein the foam comprises polyurethane/polyester.
  5. The product of claim 1, wherein the foam comprises a material selected from the group consisting of polyurethane/polyester and polyurethane/polyether.
  6. The product of claim 1, wherein the foam is stable to organic solvents.
  7. The product of claim 1, wherein the applicator tip has an angled chisel-shaped edge.
  8. The product of claim 1, wherein the applicator tip has an average thickness of between 0.16 cm and 1.27 cm.
  9. The product of claim 1, wherein the applicator tip further comprises a flexor within the foam.
  10. The product of claim 1, wherein the correction fluid includes organic solvent.
  11. The product of claim 1, wherein the correction fluid has a viscosity of between 10 mPa.s (10 cps) and 2000 mPa.s (2000 cps).
  12. The product of claim 1, wherein the foam portion has an average pore size of between 7 ppcm (20 ppi) and 52 ppcm (130 ppi).
  13. The product of claim 1, wherein said product further comprises an insert in the opening through which the applicator passes during use, the insert having a narrowed neck portion that removes excess correction fluid from the applicator tip when the applicator tip is withdrawn through the insert.
  14. A method of applying a correction fluid to a surface to cover a marking using an applicator having a flexibility of at least 1.296 mm of deflection per Newton (0.0005 inch of deflection per gram of force) measured at a deflection distance of 1.27 mm (0.05 inch) and including a stem and an applicator tip including a foam, comprising loading correction fluid onto the applicator tip, and contacting the surface with the applicator tip to transfer correction fluid over the marking.
  15. The method of claim 14, wherein the applicator further includes a flexor within the foam.
  16. An applicator for applying a correction fluid to a substrate, comprising

    an applicator tip including a foam, and

    a correction fluid reservoir, including correction fluid, from which correction fluid is fed to the applicator tip,

    wherein the applicator has a flexibility of at least 1.296 mm of deflection per Newton (0.0005 inch of deflection per gram of force) measured at a deflection distance of 1.27 mm (0.05 inch).
  17. The applicator of claim 16, further comprising a removable enclosure for the applicator tip.
  18. The product of claim 1, wherein the applicator has a flexibility of at least 5.184 mm of deflection per Newton (0.002 inch of deflection per gram of force) measured at a deflection distance of 1.27 mm (0.05 inch).
Anspruch[fr]
  1. Produit de fluide correcteur comprenant :
    • un corps comprenant un réservoir et une ouverture,
    • un fluide correcteur à l'intérieur du réservoir, et
    • un applicateur, inséré par l'ouverture, comprenant une tige et une pointe d'applicateur comprenant une mousse, l'applicateu ayant une flexibilité d'au moins 1,296 mm de fléchissement par Newton (0,0005 pouce de fléchissement par gramme de force) mesurée à une distance de fléchissement de 1,27 mm (0,05 pouce).
  2. Produit selon la revendication 1, dans lequel la tige présente une longueur entre 2 cm et 15 cm.
  3. Produit selon la revendication 1, dans lequel la mousse comprend une mousse extrudée.
  4. Produit selon la revendication 3, dans lequel la mousse comprend du polyuréthanne/polyester.
  5. Produit selon la revendication 1, dans lequel la mousse comprend un matériau sélectionné à partir du groupe comprenant le polyuréthanne/polyester et le polyuréthanne/polyéther.
  6. Produit selon la revendication 1, dans lequel la mousse est stable par rapport aux solvants organiques.
  7. Produit selon la revendication 1, dans lequel la pointe d'applicateur a un bord angulaire en forme de ciseau.
  8. Produit selon la revendication 1, dans lequel la pointe d'applicateur a une épaisseur moyenne entre 0,16 cm et 1,27 cm.
  9. Produit selon la revendication 1, dans lequel la pointe d'applicateur comprend en outre un fléchisseur à l'intérieur de la mousse.
  10. Produit selon la revendication 1, dans lequel le fluide correcteur comprend un solvant organique.
  11. Produit selon la revendication 1, dans lequel le fluide correcteur a une viscosité entre 10 mPa.s (10 cps) et 2 000 mPa.s (2 000 cps).
  12. Produit selon la revendication 1, dans lequel la portion de mousse a une taille moyenne de pore entre 7 ppcm (20 ppi) et 52 ppcm (130 ppi).
  13. Produit selon la revendication 1, dans lequel ledit produit comprend en outre une pièce insérée dans l'ouverture à travers laquelle l'applicateur passe lors de l'utilisation, la pièce insérée ayant une portion de goulot étroit qui enlève le fluide correcteur excédentaire de la pointe de l'applicateur lorsque la pointe de l'applicateur est retirée à travers la pièce insérée.
  14. Procédé d'application d'un fluide correcteur sur une surface pour couvrir une marque en utilisant un applicateur ayant une flexibilité d'au moins 1,296 mm de fléchissement par Newton (0,0005 pouce de fléchissement par gramme de force) mesurée à une distance de fléchissement de 1,27 mm (0,05 pouce) et comprenant une tige et une pointe d'applicateur comprenant une mousse, comprenant le chargement de fluide correcteur sur la pointe d'applicateur, et la mise en contact de la surface avec la pointe d'applicateur pour déposer le fluide correcteur sur la marque.
  15. Procédé selon la revendication 14, dans lequel l'applicateur comprend en outre un fléchisseur à l'intérieur de la mousse.
  16. Applicateur pour appliquer un fluide correcteur à un substrat, comprenant

       une pointe d'applicateur comprenant une mousse, et

       un réservoir de fluide correcteur, comprenant un fluide correcteur, à partir duquel le fluide correcteur alimente la pointe d'applicateur,

       dans lequel l'applicateur a une flexibilité d'au moins 1,296 mm de fléchissement par Newton (0,0005 pouce de fléchissement par gramme de force) mesurée à une distance de fléchissement de 1,27 mm (0,05 pouce).
  17. Applicateur selon la revendication 16, comprenant en outre une enveloppe détachable pour la pointe d'applicateur.
  18. Produit selon la revendication 1, dans lequel l'applicateur a une flexibilité d'au moins 5,184 mm de fléchissement par Newton (0,002 pouce de fléchissement par gramme de force) mesurée à une distance de fléchissement de 1,27 mm (0,05 pouce).






IPC
A Täglicher Lebensbedarf
B Arbeitsverfahren; Transportieren
C Chemie; Hüttenwesen
D Textilien; Papier
E Bauwesen; Erdbohren; Bergbau
F Maschinenbau; Beleuchtung; Heizung; Waffen; Sprengen
G Physik
H Elektrotechnik

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