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EP1244855A1 - Procede d'application de produits chimiques de traitement sur un produit plan, a base de fibres, par l'intermediaire d'une courroie rotative, et produits plans produits selon ce procede - Google Patents

Procede d'application de produits chimiques de traitement sur un produit plan, a base de fibres, par l'intermediaire d'une courroie rotative, et produits plans produits selon ce procede

Info

Publication number
EP1244855A1
EP1244855A1 EP00991178A EP00991178A EP1244855A1 EP 1244855 A1 EP1244855 A1 EP 1244855A1 EP 00991178 A EP00991178 A EP 00991178A EP 00991178 A EP00991178 A EP 00991178A EP 1244855 A1 EP1244855 A1 EP 1244855A1
Authority
EP
European Patent Office
Prior art keywords
tissue
fiber
belt
based planar
planar product
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Withdrawn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
EP00991178A
Other languages
German (de)
English (en)
Inventor
Stephan Eichhorn
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.)
Essity Germany GmbH
Original Assignee
SCA Hygiene Products GmbH
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 SCA Hygiene Products GmbH filed Critical SCA Hygiene Products GmbH
Publication of EP1244855A1 publication Critical patent/EP1244855A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • D21H23/54—Rubbing devices, e.g. brush, pad, felt

Definitions

  • tissue especially includes "tissue paper” or "raw tissue”, as is normally produced as a one-ply tissue web in the tissue (paper) machine, as well as including multiply (intermediate) products, e.g. in the form of multiply doubled webs or in the form of master rolls for further processing and ready-made one-ply and multiply tissue products such as paper handkerchiefs, facials, toilet paper, household towels such as kitchen towels, hand towels and other wipes etc.
  • tissue production is counted among the paper making techniques.
  • the production of tissue, or more accurately, raw tissue if the one-ply (intermediate) product manufactured on a special-purpose paper machine of the tissue or tissue paper machine is meant, is delimited from paper production as a result of the extremely low basis weight of normally less 65, more often less than 40 g/m ⁇ and as a result of the much higher tensile energy absorption index as compared to paper.
  • the tensile energy absorption index is arrived at by relating the tensile energy absorption to the test sample volume before inspection (length, width, thickness of sample between the clamps before tensile load) .
  • Paper and tissue paper also differ in general with regard to the modulus of elasticity that characterizes the stress- strain properties of these planar products as a material parameter, depending on the production conditions, raw materials used and chemical additives.
  • a tissue paper's high tensile energy absorption index results from the ouier and/or inner creping.
  • the former is produced by compression of the tissue paper web adhering to a dry cylinder as a result of the action of a crepe docior or in the latter instance as a result of a difference in speed between two successive screens or e.g. between a sheet- forming screen and a so-called fabric or between iwo fabrics.
  • the so-called inner sheet-forming screen can thus be operated at a speed that is up to 40% faster than that of the next fabric or that of the subsequent felt, the initially formed and already pre-drained paper web being transferred to the next TAD fabric.
  • TAD through air drying
  • This transfer of a still plastically deformable paper web at a differential speed that simultaneously takes effect may also be brought about in other embodiments between a transfer fabric and the so-called TAD imprinting fabric or between two transfer fabrics.
  • German has adopted the English-language term "fabric" to designate paper machine covers that exhibit a screen-like fabric structure in which synthetic threads are used as a thread material instead of metal wires.
  • Most of the functional properties typical of tissue and tissue products result from the high tensile energy absorption index (see German standards DIN EN 12625-4 and DIN EN 12625-5) .
  • An example is represented by tissue products for hygienic applications (hygiene products, particularly hygiene paper products) which are e.g. used in personal grooming and hygiene, the household sector, industry, the institutional field in a very wide variety of cleaning processes. They are used to absorb fluids, for decorative purposes, for packaging or even just as supporting material, as is common for example in medical practices or in hospitals. In terms of their wide variety, hygiene paper products are now considered to be everyday products.
  • Hygiene paper primarily includes all kinds of dry-creped tissue paper, as well as wet-creped paper.
  • tissue paper or more accurately raw tissue paper.
  • the one-ply raw tissue may be built up of one or a plurality of layers respectively.
  • tissue products All one-ply or multiply final products made of raw tissue and tailored to the end user's needs, i.e. fabricated with a wide variety of requirements in mind, are known as "tissue products" .
  • tissue paper Typical properties include the ready ability to absorb tensile stress energy, their drapability, good textile-like flexibility, properties which are frequently referred to as bulk (crumple) softness, a high surface softness, a high specific volume with a perceptible thickness, as high a liquid absorbency as possible and, depending on the application, a suitable wet and dry strength as well as an interesting visual appearance of the outer product surface.
  • tissue paper to be processed into tissue products (tissue paper products) and are then available to end users in a wide variety of forms and fabrication, for example as wipes, towels, household towels, particularly as kitchen towels, sanitary products
  • the tissue is frequently provided with substances, additives, auxiliary substances and other treatment chemicals.
  • this term will also cover any substance or blends of substances generally referred to as treatment chemicals and normally applied to the tissue after the drying and creping step on the yankee cylinder.
  • Treatment chemicals may have an influence on physical properties, e.g. softness, particularly bulk softness, strength in the dry and wet states, rate of absorption of liquids, particularly that of water or oil, or the structural strength of the tissue/tissue product itself, and/or they may contribute to their varying use, e.g. in the field of skin care and protection, healthcare, etc. "Lotions” are also particularly referred to in the latter case.
  • Household towels for example, particularly kitchen towels and to an even greater extent paper towels, require strength, especially in the wet state, and high suction capacity so as to satisfy consumer demands.
  • a combination of dry strength plus good softness is more likely to determine suitability in practice and acceptance among consumers.
  • tissue products such as handkerchiefs or facial wipes
  • surface softness and excellent suppleness are predominant properties which, in addition to strength, define the serviceability of these products.
  • Cosmetic components contained in the product though particularly present on its outer surfaces also play an important part in the latter tissue products.
  • Such cosmetic components include, inter alia, perfumes, moisturizers, skin care agents, healthcare substances such as panthenol or the active camomile ingredient bisabolol.
  • Softness is an important property of tissue products such as handkerchiefs, cosmetic wipes, toilet paper, serviettes/napkins, not to mention hand or kitchen towels, and it describes a characteristic tactile sensation caused by the tissue product upon contact with the skin.
  • softness is determined in practice by means of a subjective method. To do so, use is made of a "panel test" in which several trained test persons give a comparative opinion.
  • softness can be subdivided into its main characteristics, surface softness and bulk softness.
  • Bulk softness describes the feeling perceived when e.g. one's fingertips move lightly over the surface of the sheet of tissue.
  • Bulk softness is defined as the sensory impression of the resistance to mechanical deformation that is produced by a tissue or tissue product manually deformed by crumpling or folding and/or by compression during the process of deformation.
  • WO 94/05857 describes a method of applying a chemical paper-making additive to a dry tissue paper mat (tissue paper nonwoven fabric, raw tissue) .
  • the application technique is characterized by the following steps: provision of a dry tissue paper mat, dilution of a chemical paper-making additive using a suitable solvent to form a diluted chemical solution, the application of this diluted chemical solution to a heated transfer surface, partial evaporation of the solvent through the transfer surface to form a film that contains this paper-making additive and the transfer of this film from the heated transfer surface to the surface of the tissue mat.
  • EP-A-03 47 177 relates to a method of making soft tissue paper comprising the following steps: forming sheets from an aqueous suspension of cellulose fibers to form a mat, application of a sufficient amount of water-soluble non- cationic surfactant and drying and creping the mat, this tissue paper exhibiting a basis weight of 10 to 65 g/ ⁇ .2 and a density of less than 0.6 g/rt.3.
  • the treatment solution can therefore be added both in the wet section of a tissue paper machine (wadding machine) , at the end of the screen section, before or inside the press section (mechanical drainage), i.e. in the case of solid contents between 20 and 50 %, and in the dry section disposed after the press section in the case of solid contents of 40 to 97 % fibrous dry weight.
  • the prior art is represented by feed sites on the transfer screen/belt, e.g. ahead of mat transfer in a TAD layout, and the supply to the moist fibrous mat after its transfer to the transport (dry) felt before the press or presses in a conventional single-felt or double-felt tissue machine.
  • the supply of treatment compositions by spray application onto the yankee cylinder is also known in the prior art.
  • the addition of the treatment chemicals within the tissue making machine is brought about by spray application onto the pope roller to produce a film and subsequently to transfer it to the tissue web during rolling up.
  • the already creped "tissue web” usually still exhibits a residual temperature of between 20°C and about 70°C as a result of the preceding drying process on the yankee cylinder, which benefits the distribution of treatment chemicals and their penetration of the raw tissue.
  • centrifugal rotors or brush units In addition to spray application via a nozzle bar, the use of centrifugal rotors or brush units is possible. Application may also be effected directly onto the tissue paper web.
  • WO 98/41687 describes a method of making tissue products of the aforementioned kind, this method being characterized by the fact that a composition of the above type is applied to the fibrous mat or tissue web within the screen section, press section, TAD section, on the yankee cylinder and/or dry section, i.e. at a fibrous material density of 20 to 97 %, relative to the web's dry fibrous weight, in an amount of 0.1 to 40 %, preferably 1 to 20 %, continuously or discontinuously on or within the web and the web may undergo post-smoothing after application.
  • An alternative embodiment mentioned in this document relates to a method of making tissue products, this method being characterized by the fact that a composition of the above type is applied to the fibrous mat or tissue web after the dry section on the wadding machine, doubling machine and/or in the automatic processor in an amount of 0.1 to 40 wt . % , preferably 1 to 20 wt . % , continuously or discontinuously on or within the web and the web may undergo post-smoothing after application.
  • the known techniques suffer from various disadvantages that lead to an impairment of the tissue properties.
  • the pressure exerted on the tissue e.g. when using roller application techniques to apply the treatment chemicals, particularly during follow-up smoothing of the product treated with a treatment composition, causes the occurrence of undesirable mechanical effects upon the tissue.
  • the tissue is compressed, thereby decreasing e.g. its thickness (bulk), which consumers usually feel to be detrimental e.g. in the case of a paper handkerchief.
  • bulk thickness
  • Such a subjective impression on the user's part in the example of a thickness that is perceived to be detrimental may in turn wreck any objective improvement e.g. in surface softness, because consumers refuse to buy such a product. This is a problem that is particularly faced by multiply tissue products.
  • Roller or spray-on application is limited by the viscosity of the lotion to be applied.
  • Highly viscous and/or fatty lotions can be applied to paper by means of a spray technique only with extreme difficulty or not at all. It is therefore often necessary to use e.g. water or organic solvents to dilute or refine the treatment compositions to be applied, entailing another process step in which the employed solvent has to be removed from the fiber-based planar product, particularly tissue, once more.
  • the known application techniques such as spray application or the various roller application techniques entail only inadequate control of the distribution of treatment chemicals, particularly in the z direction, i.e. perpendicular to the surface of the tissue. This problem arises with particular clarity in the case of multiply tissue fabrics .
  • the treatment chemicals applied to the surface penetrate into the tissue only to a slight extent, and often remain only on the top-most layer. Only a smaller part passes to the inner region.
  • softness-promoting lotions sometimes also known as "softness-promoting lotions
  • the problem with tissue products that contain cosmetic treatment chemicals is the even distribution of the cosmetic components of the treatment composition on the external surfaces of the treated tissue product's outer plies. This is so because it is necessary, on the one hand, to apply a large amount of cosmetic components in order to ensure the desired action of the cosmetic substances upon transferral to the user's skin (healthcare) when using the tissue product. It is also necessary to guarantee the evenness of the amount of treatment composition applied to the external surfaces of the tissue product's outer plies for legal reasons, e.g. on grounds of competition law. Because the cosmetic components of a lotion simultaneously represent very significant cost factors, it is likewise necessary, for reasons of economy, to control within narrow limits the amount of such components applied.
  • Roller or spray-on application is limited by the viscosity of the lotion to be applied. Highly viscous or fatty lotions can be applied to paper only with extreme difficulty.
  • a further object of the invention is to provide a fiber-based planar product, particularly tissue, exhibiting an improved distribution of treatment chemicals.
  • fiber-based planar product stands for planar products made from fibers (particularly cellulose-containing fibers, such as pulp), e.g. nonwovens or tissue, tissue representing a particularly preferred embodiment.
  • another revolving belt in contact with the tissue in contact with the tissue to be provided on that side of the tissue which is opposite the first belt.
  • Treatment compositions can also be applied to this second belt; they are then applied to the tissue via the contact surface of the second belt.
  • the treatment compositions transferred using the second belt may differ from the treatment compositions transferred using the first belt.
  • the direction of travel (or machine direction) of the belt contact surface usually coincides with the direction of travel of the tissue.
  • the first belt and optionally the second belt preferably have approximately the same speed as the tissue.
  • Elastomeric plastics such as rubber exhibiting the necessary strength values are particularly suitable as belt material; such elastomers may optionally be reinforced (e.g. by fibers) .
  • the belts Before reapplying the treatment composition, e.g. by an immersion bath, the belts can optionally be cleaned and', if necessary, dried.
  • the treatment compositions are preferably applied to the belts by means of spray application, e.g. via a nozzle bar, centrifugal rotors or brush units, or by means of roller application.
  • spray application e.g. via a nozzle bar, centrifugal rotors or brush units, or by means of roller application.
  • they can be supplied e.g. as a blend via an application means, supplied to a first and/or second belt via a plurality of application means or a plurality of belts can be provided in succession in the machine direction (MD) .
  • the tissue can also be guided past the same belt several times in order to apply the same or different treatment compositions successively.
  • Other versions in terms of configuration and number of belts and in terms of the configuration of the application means are likewise covered by the invention.
  • the tissue may be heated before, during or after application of the treatment composition.
  • the first and/or second belt can alternatively be heated. This may be brought about e.g. by supplying heated air.
  • Another possible way of controlling the penetration of the treatment composition into the tissue is to vary the contact surface.
  • the treatment composition (e.g. a cosmetic lotion) can be applied in a structured manner on one or both external sides, i.e. it is possible to provide free surfaces or recesses within which no treatment composition is applied. As a result, the degree of absorption is maintained as far as possible.
  • the treatment composition may comprise a single treatment chemical or a blend of at least two treatment chemicals. This composition may also contain compounds that have no influence or only a slight influence on the properties of the treated planar product, particularly tissue, e.g. solvents (such as water and/or alcohol), auxiliary substances and/or additives. It may therefore be present e.g. as an aqueous solution or dispersion (e.g. suspension or emulsion) or comprise one or more treatment chemicals (water not included) .
  • Water may, however, also be an important active constituent of the treatment composition, particularly in cosmetic lotions intended to achieve a pleasant moist sensation on the skin. Water is then preferably used in combination with hygroscopic compounds, e.g. the polyhydroxy compounds described below.
  • the proportion of optionally present solvents (including water) in the composition is preferably less than 60 wt . % , with greater preference on less than 30 wt . % , even greater preference on less than 10 wt.%, particularly less than 5 wt.%, each relative to the total weight of the composition.
  • the treatment chemical (s) may be selected from the following compound classes or compounds.
  • cosmetic lotions such as
  • moisturizers such as substituents for the skin's natural moisturizing factor (NMF) that contain e.g. cleavage products of collagen, glycerol etc.;
  • NMF skin's natural moisturizing factor
  • skin care agents e.g. long-chain fatty acid esters (like sorbitan fatty acid ester or Cetiol®) , lanolin or derivatives thereof;
  • fragrances e.g. natural, naturally identical or artificial perfumes
  • active cosmetic ingredients like D-panthenol or the active camomile ingredient ⁇ -bisabolol or agents exhibiting other functions, e.g. • strength-boosting agents, particularly wet-strength agents like epichlorohydrin resins or crosslinked polyalkylene amines,
  • agents that promote the softness (e.g. bulk softness or surface softness) of the planar product, particularly the tissue e.g. a polyhydroxy compound (e.g. ethylene glycol, propylene glycol, a liquid polyethylene glycol
  • surfactants used e.g. as absorption rate control agents, e.g. long-chain quaternary ammonium compounds that may also exhibit softness-promoting action,
  • a preferred basic composition for improving softness, particularly bulk softness comprises the following recipe:
  • glycerol 40 - 45 % propylene glycol : 28 - 30 % linden extract: 2.5 - 3.5 water up to 100
  • the total amount of nonvolatile treatment chemical (s) applied in the first and second surface areas of the planar product, particularly tissue is preferably 0.01 to 50 wt.%, with greater preference on 0.5 - 45 wt.% and even greater preference on 0.75 - 40 wt.%, relative to the weight of the untreated oven-dried planar product, particularly tissue (oven-dried being understood in accordance with German standard DIN EN 20638). Even greater preference is given to values of 1-35 wt.%, particularly 2-30 wt.% (what is considered to be volatile is any component that volatilizes upon further processing of the planar product, especially tissue, e.g. solvent such as water, unless it is intended to remain in the composition, e.g. a cosmetic lotion.).
  • the apparatus for applying treatment chemicals to tissue comprises: at least one application means for applying treatment compositions containing the treatment chemicals to a revolving belt, and the revolving belt that is in contact with moving tissue via a contact surface and transfers the applied treatment composition to the moving tissue via this contact surface.
  • the apparatus according to the invention may also have a second revolving belt on that side of the tissue which is opposite the belt, the second belt also being provided with at least one application means with which a treatment composition can be applied to the second belt, the treatment composition being transferred to the tissue via the contact surface of the belt with the tissue.
  • the speeds of the first belt and/or second belt and of the moving tissue are preferably approximately equal. It is also preferable for the direction of travel of the belts, on whichever side faces the tissue, and of the tissue to be equal within the apparatus.
  • At least one application means of the apparatus according to the invention comprises at least one spray means, e.g. a nozzle bar, centrifugal rotors or brush units, and/or at least one roller.
  • the one or more application means may be present in various configurations and combinations.
  • the apparatus according to the invention preferably comprises one or more heating means for at least one of the revolving belts . It may also be advantageous for at least one of the belts to be structured in order to lend the manufactured tissue a surface structure.
  • the method of making a tissue product according to the invention comprises one or more of the procedural steps described above.
  • Other procedural steps that may be necessary, depending on the tissue product, are known to specialists and have already been mentioned to an extent.
  • the present invention also relates to a fiber-based planar product that contains a treatment composition; this product can be obtained according to a method that comprises the steps described above.
  • tissue as defined by the present invention is understood as any kind of creped paper made from an aqueous dispersion and having a basis weight range of usually between 10 and 65 g/ ⁇ r.2. in accordance with the invention, the term “tissue” covers both
  • raw creped paper also known as “raw tissue”, particularly the range of dry-creped raw tissue paper, regardless of whether they are single-layer or multilayer,
  • Raw tissue is usually made as a one-ply tissue web in the tissue (paper) machine or as an optionally multiply (intermediate) product, e.g. in the form of multiply doubled webs or in the form of master rolls for further processing.
  • the term "layers" refers to a change in chemical and/or physical properties within a tissue ply; such a change may be caused e.g. by a different fiber composition. In contrast to plies, layers usually cannot be separated from one another.
  • the final product is preferably
  • a cleaning wipe e.g. wiping paper, a windscreen cleaning wipe, a cleaning wipe for industrial applications, a towel or a cleaning wipe for household use, e.g. kitchen paper;
  • a sanitary product e.g. toilet paper (also moist);
  • a tissue for facial use e.g. a makeup removal tissue (facial) or cosmetic tissue
  • a makeup removal tissue facial
  • cosmetic tissue e.g. a makeup removal tissue (facial) or cosmetic tissue
  • a garment e.g. disposable apparel for hospitals or kitchen staff.
  • tissue products are handkerchiefs, tissues for facial use, sanitary products (e.g. toilet paper) and towels in which the application of cosmetic treatment compositions and/or treatment compositions that convey softness (lotions) plays a part.
  • tissue paper must also be regarded independently of the fibrous raw material to be used, particularly irrespective of whether the fibrous raw material is made solely or mainly from natural pulps e.g. according to the sulfate or sulfite process, or is used in a mixture with chemothermomechanical wood pulps (e.g. CTMP, or HTCMP) , or whether the fibrous raw material used comes from a secondary fiber refinement process and whether the fibrous raw material needed to make tissue therefore completely or partially comprises "recycled fibers".
  • CTMP chemothermomechanical wood pulps
  • tissue paper manufacturing a proportional use by refinement of modified pulp fibers in a range of 10 to 50 %, relative to the total weight of the fibers, or even a use of synthetic fibers suitable for paper making in an amount of 10 to 30 % are covered by the aforementioned definition of the term "tissue". It is analogously possible to apply the method beyond the field of paper making to corresponding fields in the nonwoven and textile sectors.
  • the treatment composition Upon application of the treatment composition, it is possible to start out e.g. from a multiply, usually two-ply to four- ply or multiply (doubled) master roll produced in a separate doubling machine.
  • a plurality of one-ply tissue webs can alternatively be treated (one unwinding each) and then jointly rolled up into a multiply tissue product via a roll- up device.
  • the inner plies can be treated with a treatment chemical other than that for the outer plies.
  • the inner plies of a four-ply end product can remain untreated, or can be treated with a strength-boosting agent, whereas the two outer plies were treated with a treatment composition to improve surface softness.
  • an extremely wide variety of combinations of differently treated tissue plies is conceivable .
  • the tissue is a four-ply or three-ply doubled raw tissue for making handkerchiefs or facials, the tissue being made available in the form of master rolls for the application of a treatment agent in a processing machine suitable for this purpose.
  • the processing machine comprises at least one unwinding device for the master rolls, a roll-up device for the product finished after application of a treatment agent, and an interposed applicator for applying the treatment agent.
  • FIG. 1 is a diagrammatic illustration of a preferred embodiment of the application method according to the invention and of the apparatus according to the invention in which the reference numbers represent the following:
  • Fig. 1 the treatment composition is applied to the revolving belts (1) and (2) using spray means (4) and rollers (5) .
  • the belts make contact with the tissue (3) moving in the machine direction (MD) on the side opposite the spray means and rollers. While the belts make contact with the tissue, the treatment compositions applied to the belts are transferred to the tissue.
  • MD machine direction

Landscapes

  • Paper (AREA)
  • Sanitary Thin Papers (AREA)

Abstract

La présente invention concerne un procédé d'application de produits chimiques de traitement sur un produit plan, à base de fibres, notamment du papier de soie. Ce procédé consiste a) à appliquer une composition de traitement, qui contient lesdits produits chimiques de traitement, sur une courroie rotative (1) et b) à mettre ladite courroie rotative (1) en contact avec le produit plan, à base de fibres, en déplacement (3), ce qui permet de transférer la composition de traitement de la courroie rotative (1) sur le produit plan, à base de fibres, en déplacement (3), par l'intermédiaire de la surface de contact. La présente invention concerne également un appareil permettant de mettre en oeuvre ledit procédé. Cet appareil comprend au moins un système d'application (4, 5), permettant d'appliquer des compositions de traitement sur une courroie rotative (1), ainsi que ladite courroie rotative (1), qui est en contact avec le produit plan, à base de fibres, en déplacement (3), par l'intermédiaire d'une surface de contact, et transfère la composition de traitement appliquée, par l'intermédiaire de cette surface de contact, sur le produit plan, à base de fibres, en déplacement (3).
EP00991178A 1999-12-30 2000-12-12 Procede d'application de produits chimiques de traitement sur un produit plan, a base de fibres, par l'intermediaire d'une courroie rotative, et produits plans produits selon ce procede Withdrawn EP1244855A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19963833 1999-12-30
DE19963833A DE19963833A1 (de) 1999-12-30 1999-12-30 Verfahren zur Applikation von Behandlungschemikalien auf ein flächiges Erzeugnis auf Faserbasis über ein umlaufendes Band und damit hergestellte flächige Produkte
PCT/EP2000/012613 WO2001049937A1 (fr) 1999-12-30 2000-12-12 Procede d'application de produits chimiques de traitement sur un produit plan, a base de fibres, par l'intermediaire d'une courroie rotative, et produits plans produits selon ce procede

Publications (1)

Publication Number Publication Date
EP1244855A1 true EP1244855A1 (fr) 2002-10-02

Family

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EP00991178A Withdrawn EP1244855A1 (fr) 1999-12-30 2000-12-12 Procede d'application de produits chimiques de traitement sur un produit plan, a base de fibres, par l'intermediaire d'une courroie rotative, et produits plans produits selon ce procede

Country Status (5)

Country Link
US (1) US20030000668A1 (fr)
EP (1) EP1244855A1 (fr)
AU (1) AU3158101A (fr)
DE (1) DE19963833A1 (fr)
WO (1) WO2001049937A1 (fr)

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US20030000668A1 (en) 2003-01-02
DE19963833A1 (de) 2001-07-19
AU3158101A (en) 2001-07-16

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