EP1231321A2 - Apparatus and method for applying a fluid to a paper web - Google Patents

Apparatus and method for applying a fluid to a paper web Download PDF

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Publication number
EP1231321A2
EP1231321A2 EP02002237A EP02002237A EP1231321A2 EP 1231321 A2 EP1231321 A2 EP 1231321A2 EP 02002237 A EP02002237 A EP 02002237A EP 02002237 A EP02002237 A EP 02002237A EP 1231321 A2 EP1231321 A2 EP 1231321A2
Authority
EP
European Patent Office
Prior art keywords
web
fluid
roller
paper web
applying
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.)
Withdrawn
Application number
EP02002237A
Other languages
German (de)
French (fr)
Other versions
EP1231321A3 (en
Inventor
Massimo Nofori
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.)
Industrie Cartarie Tronchetti SpA
Original Assignee
Industrie Cartarie Tronchetti SpA
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 Industrie Cartarie Tronchetti SpA filed Critical Industrie Cartarie Tronchetti SpA
Publication of EP1231321A2 publication Critical patent/EP1231321A2/en
Publication of EP1231321A3 publication Critical patent/EP1231321A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0847—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the circumferential speed of the coating roller and the work speed having same direction but different value
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls
    • D21H23/58—Details thereof, e.g. surface characteristics, peripheral speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work

Definitions

  • the present invention relates to an apparatus and a method for applying a fluid to a paper web.
  • the present invention relates to an apparatus for applying a fluid, such as a lotion or a softener, to a paper web or ribbon for producing tissue-type products, such as handkerchiefs, toilet paper, et cetera.
  • a fluid such as a lotion or a softener
  • fluids such as lotions, softeners and others
  • tissue-type products are applied to tissue-type products while they are still in the form of a continuous web, by virtue of sprayers or applicator rollers.
  • the aim of the present invention is to provide an apparatus for applying a fluid to a paper web that allows to vary rapidly and easily the amount of fluid that is applied.
  • Another object of the invention is to provide an apparatus for applying a fluid to a paper web that can be used easily in existing lines for the production of tissue-type products.
  • Another object is to provide an apparatus for applying a fluid to a paper web that is constructively simple and reliable.
  • an apparatus for applying a fluid to a paper web comprising a means for feeding a continuous paper web to at least one fluid application station, comprising at least one roller that is in contact with said web and is adapted to convey fluid to be applied to the paper web, characterized in that the rotation rate of the roller is variable with respect to the advancement speed of the web in order to vary the amount of fluid applied by the roller to the web.
  • the apparatus for applying a fluid to a paper web comprises a supporting frame 3 having a means for feeding at least one continuous paper web 5 to at least one station 7 for applying a fluid.
  • the apparatus according to the invention is provided with two application stations, designated by the reference numerals 7 and 107 respectively and each adapted to apply fluid to one side of the web 5.
  • the paper web 5 is, for example, constituted by coupling two plies, designated by the reference numerals 9 and 11 respectively, and is fed to the application stations 7 and 107 by a feeder means comprising rollers 13.
  • the system for coupling the plies 9 and 11 in order to form the paper web 5 and the system for feeding the web can be of a per se known type and are not described here for the sake of brevity.
  • the first feeder station 7 comprises an engraved roller 15, which cooperates with a doctor 17 for spreading the fluid to be applied to the web 5.
  • the engraved roller 15 is motorized by a variable-speed motor means in order to vary the rotation rate of the engraved roller with respect to the feed rate of the web 5 at the application station 7.
  • the second application station 107 comprises an engraved roller 115, which cooperates with a doctor 117 for spreading the fluid to be applied to the web 5.
  • the engraved roller 115 is motorized by a variable-speed motor means in order to vary the rotation rate of the engraved roller with respect to the feed rate of the web 5 at the application station 107.
  • the engraved roller of each application station rotates in contact with the doctor and conveys liquid, contained in appropriately provided tanks, in order to deposit it on the paper web.
  • the engraved roller is turned with a peripheral speed that is lower than the advancement speed of the paper web, raising the fibers of the paper web and thus giving greater thickness and softness, the so-called "hand feel" of the product.
  • the embodiment of the illustrated example comprises two application stations, designated by the reference numerals 7 and 107 respectively, for applying fluid to both sides of the web 5.
  • the materials used, as well as the dimensions, may be any according to requirements and to the state of the art.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Polarising Elements (AREA)
  • Coating Apparatus (AREA)
  • Adhesive Tapes (AREA)
  • Sanitary Thin Papers (AREA)
  • Paper (AREA)

Abstract

An apparatus and a method for applying a fluid to a paper web, including a means for feeding a continuous paper web to at least one fluid application station, which includes at least one roller that is in contact with the web and is adapted to convey fluid to be applied to the paper web. The rotation rate of the roller is variable with respect to the advancement speed of the web in order to vary the amount of fluid applied by the roller to the web.

Description

  • The present invention relates to an apparatus and a method for applying a fluid to a paper web.
  • More particularly, the present invention relates to an apparatus for applying a fluid, such as a lotion or a softener, to a paper web or ribbon for producing tissue-type products, such as handkerchiefs, toilet paper, et cetera.
  • Currently, fluids, such as lotions, softeners and others, are applied to tissue-type products while they are still in the form of a continuous web, by virtue of sprayers or applicator rollers.
  • There is the problem of correctly dosing the amount of fluid to be applied to the product and/or of varying the dosage according to specific requirements.
  • The aim of the present invention is to provide an apparatus for applying a fluid to a paper web that allows to vary rapidly and easily the amount of fluid that is applied.
  • Another object of the invention is to provide an apparatus for applying a fluid to a paper web that can be used easily in existing lines for the production of tissue-type products.
  • Another object is to provide an apparatus for applying a fluid to a paper web that is constructively simple and reliable.
  • This aim, these objects and others that will become better apparent hereinafter are achieved by an apparatus for applying a fluid to a paper web, comprising a means for feeding a continuous paper web to at least one fluid application station, comprising at least one roller that is in contact with said web and is adapted to convey fluid to be applied to the paper web, characterized in that the rotation rate of the roller is variable with respect to the advancement speed of the web in order to vary the amount of fluid applied by the roller to the web.
  • Further characteristics and advantages of the present invention will become better apparent from the description of preferred but not exclusive embodiments thereof, illustrated only by way of non-limitative example in the accompanying drawings, wherein the only figure is a schematic side elevation view of the apparatus for applying a fluid to a paper web, according to the invention.
  • With reference to the above cited figure, the apparatus for applying a fluid to a paper web, according to the invention, generally designated by the reference numeral 1, comprises a supporting frame 3 having a means for feeding at least one continuous paper web 5 to at least one station 7 for applying a fluid.
  • In the illustrated embodiment, the apparatus according to the invention is provided with two application stations, designated by the reference numerals 7 and 107 respectively and each adapted to apply fluid to one side of the web 5.
  • More particularly, the paper web 5 is, for example, constituted by coupling two plies, designated by the reference numerals 9 and 11 respectively, and is fed to the application stations 7 and 107 by a feeder means comprising rollers 13.
  • The system for coupling the plies 9 and 11 in order to form the paper web 5 and the system for feeding the web can be of a per se known type and are not described here for the sake of brevity.
  • According to the invention, the first feeder station 7 comprises an engraved roller 15, which cooperates with a doctor 17 for spreading the fluid to be applied to the web 5.
  • The engraved roller 15 is motorized by a variable-speed motor means in order to vary the rotation rate of the engraved roller with respect to the feed rate of the web 5 at the application station 7.
  • Likewise, the second application station 107 comprises an engraved roller 115, which cooperates with a doctor 117 for spreading the fluid to be applied to the web 5.
  • The engraved roller 115 is motorized by a variable-speed motor means in order to vary the rotation rate of the engraved roller with respect to the feed rate of the web 5 at the application station 107.
  • The engraved roller of each application station rotates in contact with the doctor and conveys liquid, contained in appropriately provided tanks, in order to deposit it on the paper web. By varying the rotation rate of the engraved roller with respect to the feed rate of the paper web, at least in the region of contact with the roller, a mutual sliding is produced between the roller and the web, and by adjusting this sliding it is possible to vary the dosage of fluid applied to the web.
  • According to a preferred aspect of the invention, the engraved roller is turned with a peripheral speed that is lower than the advancement speed of the paper web, raising the fibers of the paper web and thus giving greater thickness and softness, the so-called "hand feel" of the product.
  • The embodiment of the illustrated example comprises two application stations, designated by the reference numerals 7 and 107 respectively, for applying fluid to both sides of the web 5.
  • In practice it has been observed that the invention achieves the intended aim and objects, an apparatus for applying a fluid to a paper web having been provided which allows to vary rapidly and easily the amount of fluid applied.
  • The apparatus according to the invention is susceptible of numerous modifications and variations, within the scope of the appended claims and all the details may be replaced with technically equivalent elements.
  • The materials used, as well as the dimensions, may be any according to requirements and to the state of the art.

Claims (6)

  1. An apparatus for applying a fluid to a paper web, comprising a means for feeding a continuous paper web to at least one fluid application station, comprising at least one roller that is in contact with said web and is adapted to convey fluid to be applied to said paper web, characterized in that the rotation rate of the roller is variable with respect to the advancement speed of said web in order to vary the amount of fluid applied by said roller to said web.
  2. The apparatus according to claim 1, characterized in that said application station comprises a doctor, which cooperates with said roller.
  3. The apparatus according to claim 1, characterized in that said roller is an engraved roller.
  4. The apparatus according to one or more of the preceding claims, characterized in that it comprises at least two application stations, one for each side of said web.
  5. The apparatus according to one or more of the preceding claims, characterized in that the engraved roller is turned at a peripheral speed that is lower than the speed of the paper web and is adapted to raise the fibers of the paper web so as to thicken said web and increase its softness.
  6. A method for applying a fluid to a paper web, comprising sliding a paper web at a roller that is adapted to convey fluid to be applied to the web, characterized in that the rotation rate of the roller is varied with respect to the feed rate of said web.
EP02002237A 2001-02-09 2002-01-30 Apparatus and method for applying a fluid to a paper web Withdrawn EP1231321A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI010265 2001-02-09
ITMI20010265 ITMI20010265A1 (en) 2001-02-09 2001-02-09 APPARATUS AND METHOD FOR APPLYING A FLUID TO A PAPER TAPE

Publications (2)

Publication Number Publication Date
EP1231321A2 true EP1231321A2 (en) 2002-08-14
EP1231321A3 EP1231321A3 (en) 2004-10-20

Family

ID=11446820

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02002237A Withdrawn EP1231321A3 (en) 2001-02-09 2002-01-30 Apparatus and method for applying a fluid to a paper web

Country Status (2)

Country Link
EP (1) EP1231321A3 (en)
IT (1) ITMI20010265A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8904112D0 (en) * 1989-02-23 1989-04-05 Wiggins Teape Group Ltd Process for applying microcapsule-containing compositions to paper
US5178912A (en) * 1990-03-29 1993-01-12 Congoleum Corporation Use of reverse roll coater to make flooring material
SE465709B (en) * 1990-04-03 1991-10-21 Btg Kaelle Inventing Ab PROCEDURE APPLIES DUPLEXIC COATING OF A CURRENT COURT BY TWO OPPOSED TRANSFER ROLLS
FI93377C (en) * 1993-01-13 1995-03-27 Valmet Paper Machinery Inc A method and arrangement for preventing air from entering between a moving material web and a roll
DE59306972D1 (en) * 1993-01-29 1997-08-28 Voith Gmbh J M Method and device for coating a paper web
DE19652769A1 (en) * 1996-12-18 1998-06-25 Voith Sulzer Papiermasch Gmbh Method and device for damping contact vibrations
DE19743641A1 (en) * 1997-10-02 1999-04-08 Karl Dengler Web surface coating assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
ITMI20010265A1 (en) 2002-08-09
EP1231321A3 (en) 2004-10-20

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