FI127812B - Method and system for applying a substance layer onto a moving fiber web by foam application - Google Patents

Method and system for applying a substance layer onto a moving fiber web by foam application Download PDF

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Publication number
FI127812B
FI127812B FI20165927A FI20165927A FI127812B FI 127812 B FI127812 B FI 127812B FI 20165927 A FI20165927 A FI 20165927A FI 20165927 A FI20165927 A FI 20165927A FI 127812 B FI127812 B FI 127812B
Authority
FI
Finland
Prior art keywords
substance
nozzle
fiber web
guide surface
fibrous web
Prior art date
Application number
FI20165927A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20165927L (en
Inventor
Reijo Pietikäinen
Tapio Pitkäniemi
Original Assignee
Valmet Technologies Oy
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 Valmet Technologies Oy filed Critical Valmet Technologies Oy
Priority to FI20165927A priority Critical patent/FI127812B/en
Priority to DE102017128240.8A priority patent/DE102017128240A1/en
Priority to ATA50996/2017A priority patent/AT519414B1/en
Publication of FI20165927L publication Critical patent/FI20165927L/en
Application granted granted Critical
Publication of FI127812B publication Critical patent/FI127812B/en

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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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/002—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines by using a foamed suspension
    • 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
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • 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
    • 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
    • D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Paper (AREA)

Abstract

The invention relates to a method and a system for applying at least one substance layer (C) in form of foam onto a moving fiber web (W) through at least one opening of at least one nozzle (15) of an application unit. The substance (C) is flown from the nozzle opening (15) onto a guide surface (20), which guide surface (20) the substance is flown onto a target surface and one end of the guide surface (15) is located in contact with the target surface, onto which the substance is applied.

Description

20165927 prh 07-12- 2016
Method and system for applying a substance layer onto a moving fiber web by foam application
The invention relates to a method and to a system for applying a substance layer onto a moving fiber web by foam application. More especially the invention relates 5 to a method according to the preamble of claim 1 and to a system according to the preamble of claim 7.
As known from the prior art fiber web making processes typically comprise an assembly formed by a number of apparatuses arranged consecutively in the process line. A typical production and treatment line comprises a head box, a wire section 10 and a press section as well as a subsequent drying section and a reel-up. The production and treatment line can further comprise other devices and sections for finishing the fiber web, for example, a sizer, a calender, and a coating section. The production and treatment line also comprises at least one winder for forming customer rolls as well as a roll packaging apparatus. In this description and the follow15 ing claims by fiber webs are meant for example paper and board webs.
In the production of fiber webs, for example of paper or board webs, various substances are added onto the fiber web in order to achieve the desired end-use properties of the fiber web. In particular, the strength and absorption properties of fiber webs can be improved by using sizing by applying sizing agents, such as 20 starch or other glue chemicals, to the web at the wet or dry end of the web production line.
In coating process a mixture of pigment and binder, usually starch, is applied onto the web usually as a single layer. In the coating process one or more layers of coating color, i.e. mixture of pigments, binders and other additives is added on the 25 top of the web surface. The main purpose of the coating is to improve the appearance and printability of the web by providing a smooth, flat and opaque surface.
In the coating of a fiber web typically a coating device - a coater - is used and in sizing a sizer is used. In connection with the coaters and the sizers different kinds of application technologies for application of the substance on the fiber web are 30 employed, for example curtain technology or blade technology or film transfer technology or spray technology or foam technology. The different application technologies and methods have different operating characteristics and operation windows. In particular, different application methods set different requirements both
20165927 prh 07-12- 2016 for the physical properties and application amounts of the applied substance. The present invention relates to foam application technology.
It is known from prior art to use foam application in a sizing or a coating process to add substance on a web, especially in connection of production of nonwoven 5 products. A foam coating system comprises typically a mixing device, a pumping device, a foaming device, a piping system and an application unit. The foaming is based on powerful mixing for adding air into the liquid-based substance with a surfactant additive, resulting substantial increase in the specific volume and thus making the handling and application of the coating substance much easier at small 10 dry coat weights. The application unit comprises a nozzle or nozzles for extruding the foam onto the web.
The foam application method is a robust and simple application method and by it also substances comprising solid particles and/or coating color or sizing agent with high viscosity can be applied onto a moving fiber web. Typically in the foam appli15 cation a slot-applicator i.e. an application unit with a slot nozzle or slot nozzles located very close to the fiber web in direct application and to the surface of the roll or the fabric in indirect application has been used; the application distance i.e. the distance of the nozzle tip to the surface of the fiber web, has been typically about 0,2 - 5 mm, which is very difficult for several reasons. Firstly, the small distance 20 between the nozzle tip and surface of the web makes the control of applied substance amount and evenness very difficult. The flow of applied substance is very sensitive to the nozzle-to-web distance and therefore requires precise flow control. Small nozzle-to-web distance requires also very precise nozzle position control and adjustment. In addition, variation in the fiber web thickness or in the nozzle 25 position, for example due to machine vibration, can cause changes in nozzle-toweb distance and hence variation in the applied substance amount. Too low supply amount causes breaks in application and too high supply amount causes excessive extrusion and accumulation of the applied substance around the applicator nozzle. The small distance also may cause problems in web break situations dur30 ing production process.
In DE patent application publication 19941194 is disclosed a method for coating a moving web of paper or cardboard with substance, which is applied as a foam and retains its foam structure in the finished coating and which has a covering layer of non-foamed substance. The substance is foamed mechanically or chemically. The 35 substance is glue and/or starch and/or a dispersion of pigments and/or offset coating inks and/or gravure coating inks. The application onto the moving web is done
20165927 prh 07-12- 2016 directly or indirectly for example by a transfer roll. According to one example of this known method the foam is applied through a nozzle into an application chamber, which in moving direction is limited on one side by a nozzle frame on other side by a doctor blade. In the application chamber the foam is in pressurized state and 5 thus an amount of the foam extrudes from the application chamber also to opposite direction to the moving direction of the fiber web and needs to be separately removed. This known method is also very sensitive to balance in between supplied amount of foam, pressure and moving speed of the fiber web. The application chamber is also located below the fiber web, which may cause dripping of the 10 foamed substance and thus require cleaning in order to keep the device and its surroundings in working condition.
An object of the invention is to provide a method and system for applying a substance layer onto a moving fiber web, in particular onto a paper or a board web using foam application, in which the disadvantages of prior art are eliminated or at 15 least minimized.
A particular object of the invention is to provide a method and system for applying a substance layer onto a moving fiber web, in particular onto a paper or a board web, using foam application, in which the disadvantages and problems of in to opposite direction to the moving direction of the fiber web extruding foam and to over 20 sensitive balance in between supplied amount of foam, pressure and moving speed of the fiber web are eliminated or at least minimized.
Another object is to provide a method and system for applying a substance layer onto a fiber web, in which the substance is applied in form of foam, and in which the final applied substance layer evenness and weight can be controlled precisely, 25 and in which method is also applicable in cases where small dry solid amounts are to be applied within the substance.
Another further object is to provide a method and a system for applying a substance layer onto a moving fiber web, in which requirements set to positioning accuracy as well as mechanical tolerances and mechanical properties of compo30 nents of the system, in particular, nozzles and rolls of the system, can be reduced.
Another further object is to eliminate or to at least minimize possible problems relating to runnability and maintenance issues, which are especially due to closely to the fiber web positioned nozzles, for example problems of the fiber web touching the nozzle tip and problems of fiber web material accumulation in the nozzle area
20165927 prh 07-12- 2016 and possible damages of the nozzle or other components in the web break situations.
In order to achieve the above objects and those that will come apparent later the method according to the invention is mainly characterized by the features of claim 5 1. The system according to the invention is mainly characterized by the features of claim 7. Advantageous aspects and features of the invention are presented in the dependent claims.
According to the invention the foamed substance is applied through the nozzle opening of the application unit onto a guide surface, on which the foamed sub10 stance is in ambient pressure. Tip edge i.e. one end of the guide surface is located in contact with the target surface, which target surface is the surface of the fiber web or a surface of a roll or a surface of a fabric or a surface of a belt or a surface of a pond, onto which target surface the substance is applied. During the time the foamed substance is flowing on the guide surface it has time to balance with the 15 ambient pressure and expand, correspondingly. At the application point, i.e. in the point where the foamed substance is transferred from the guide surface to the target surface, foam has already balanced with the ambient pressure and there is little or no expansion taking place, thus less opposite direction foamed substance flow and the supplied amount is less sensitive to application distance and to mov20 ing speed of the fiber web, and in general, the required balance parameters are more easily achieved. According to an advantageous feature of the invention the substance is on the guide surface in ambient pressure.
According to the invention from the guide surface the foamed substance is guided in direct application onto the moving fiber web or in indirect application via a rotat25 ing roll surface or via a moving fabric or via a moving belt of via a pond onto the moving fiber web.
According to the invention the treatment substance is applied via a guide surface onto the target surface and one end of the guide surface is in contact with the surface, onto which the substance is applied. Thus the foamed treatment substance 30 has time to even out and form a continuous, smooth substance layer during its flow on the guide surface.
According to an advantageous feature of the invention the treatment substance to be applied by the application unit is coating color or sizing agent. The method and the system according to the invention may also be utilized in connection of apply
20165927 prh 07-12- 2016 ing a coating color layer of a fiber web for printing products or in connection of sizing on top of a fiber web and in connection of providing a film, a membrane or a lacquer layer for example in converting products.
According to an advantageous feature of the invention the guide surface is flexible, 5 such as thin metal plate, thin plastic plate, thin composite structure or other flexible structure.
According to an advantageous feature of the invention the one end of the guide surface is bent to a dragging contact with the surface.
According to an advantageous feature of the invention the nozzle is a substantially 10 full width slot nozzle or a curtain- or a jet-type nozzle.
According to an advantageous feature of the invention the nozzle is formed as a distribution channel structure comprising several apart from each other located openings on substantially full width of the fiber web, from which openings the treatment substance is guided onto the guide surface.
According to an advantageous feature of the invention the system comprises a doctoring device located after the guide surface in the moving direction for smoothing the applied substance layer.
According to an advantageous feature of the invention the guide surface is located such that the application substance flow is in a downward slope in relation to the 20 surface onto which it is applied.
According to an advantageous feature of the invention the roll is a hard roll having a ceramic or metallic surface.
The application substance flow is guided by a guide surface via which it is guided onto the surface of the fiber web in direct application or onto the surface of the roll 25 or the surface of the fabric or the surface of the belt via which the substance is guided onto the surface of the fiber web in indirect application or to a pond formed between a pair of rolls, or a pair of a roll and a fabric or a belt, a pair of fabric and a belt, or a pair of two belts, or a pair of two fabrics forming a nip, though which nip the fiber web runs.
According to an advantageous feature the system is located in a wire section or a press section or a drying section or a sizing section or a coating section or a calendering section of a fiber web production line. For example the system can be
20165927 prh 07-12- 2016 used for fiber web sizing in the wire section or in the press section or at the sizing section or at the coating section for application of a sizing or coating agent or wetting agent or other agent affecting fiber web properties.
According to an advantageous feature the system comprises two rolls, which form 5 a nip in between of them, in which nip air is removed from the foam structure and the treatment substance is pressed to the fiber web.
According to the invention at least one layer of the substance in form of foam is applied onto the fiber web one-sidedly or two-sidedly.
According to an advantageous feature of the invention in one-sided application, a 10 support surface is used on the other side of the fiber web. The support surface may be advantageously a roll or a cylinder. The support surface may also be a fabric or a wire or a belt or a moving support surface or a non-moving support element.
By the invention is achieved a robust and simple application of a treatment sub15 stance, in which the substance is applied in form of foam, and in which the final applied substance material layer evenness and material layer weight can be controlled precisely and in which the method is applicable with small applied dry solid substance amounts and by it also substances comprising solid particles and/or coating color or sizing agent with high viscosity can be applied contactless.
In the following the invention is described in more detail with reference to the accompanying drawing, in which in figure 1 is schematically shown an advantageous example of the invention, in figure 2 is schematically shown another advantageous example of the invention, in figure 3 is schematically shown yet an advantageous example of the invention, in figure 4 is schematically shown yet another advantageous example of the invention and in figure 5 is schematically shown yet another advantageous example of the invention.
20165927 prh 07-12- 2016
During the course of this description like numbers and signs will be used to identify corresponding elements according to the different views which illustrate the invention.
In the example of figure 1 a fiber web W is guided on a surface of a rotating roll 10, which supports the fiber web W during application of treatment substance. The direction of rotation of the roll 10 is indicated by an arrow S. A treatment substance nozzle 15 for applying treatment substance C in form of foam is provided for applying the treatment substance C. From the nozzle 15 the treatment substance C is guided onto a guide surface 20, which is located in contact with the surface of the 10 fiber web W. The guide surface 20 is inclined in downward slope in relation to the rotation direction S of the roll 10.
In the example of figure 2 a fiber web W is guided on a surface of a rotating roll 10, which supports the fiber web W during application of treatment substance. The direction of rotation of the roll 10 is indicated by an arrow S. A treatment substance 15 nozzle 15 for applying treatment substance C in form of foam is located above a guide surface such that from the nozzle 15 the treatment substance C is guided onto the guide surface 20, which has a bendable end for dragging contact with on the surface of the fiber web W. The guide surface 20 is inclined in downward slope in relation to the rotation direction S of the roll 10.
The treatment substance C can also be indirectly applied (Fig. 5) onto the web W by applying the treatment substance C first onto the roll surface 10 before bringing the web W into contact with roll surface 10, using similar application principles as with direct application onto web W, as explained in Fig. 1 and Fig. 2.
In the example of figure 3 a fiber web W is guided on a surface of a rotating roll 10, 25 which supports the fiber web W during application of treatment substance. The fiber web W can also be guided by the other roll 11. The direction of rotation of the roll 10 is indicated by an arrow S. The roll 10 forms a nip with its counter roll 11 and at the nip a pond P of treatment substance is formed, when the nozzle 15 applies treatment substance C in form of foam to the pond P. From the nozzle 15 the 30 treatment substance is guided onto a guide surface 20, which is located in contact with the surface of the pond P. The guide surface 20 is inclined in downward slope in relation to the rotation direction S of the roll 10. In the nip between the rolls 10, 11 the treatment substance is pressed into the fiber web W. The nip can also be slightly open so that no pressing occurs.
20165927 prh 07-12- 2016
The pond application can also be two sided, wherein the fiber web W is guided to the nip in the middle without wrapping the web on either of the rolls 10 or 11 and wherein pond is formed on both sides of the web W.
In the example of figure 4 a fiber web W is guided on a surface of a rotating roll 10, which supports the fiber web W during application of treatment substance. The direction of rotation of the roll 10 is indicated by an arrow S. A treatment substance nozzle 15 for applying treatment substance C in form of foam is provided for applying the treatment substance C. From the nozzle 15 the treatment substance is guided onto a guide surface 20, which is located in contact with the surface of the 10 fiber web W. The guide surface 20 is inclined in downward slope in relation to the rotation direction S of the roll 10. After the guide surface 20 a doctor blade 28 is located for smoothing the substance layer C.
In the example of figure 5 the treatment substance C is indirectly applied onto the web W by applying the treatment substance C first onto the roll surface 10 before 15 bringing the fiber web W into contact with the surface of the roll 10. In the example of figure 5 a fiber web W is guided on a surface of a rotating roll 10, which supports the fiber web W during application of treatment substance and an optional support roll 29 can be used to press the fiber web W onto the surface of the roll
10. The direction of rotation of the roll 10 is indicated by an arrow S. A treatment 20 substance nozzle 15 for applying treatment substance C in form of foam is located in contact with the surface of the roll 10. From the nozzle 15 the treatment substance is guided onto a guide surface 20, which is located contacting the surface of the roll 10. The guide surface 20 is inclined so that treatment substance C flows downwards towards the surface of the roll 10. The treatment substance C is ap25 plied on the guide plate 20 in such a way that treatment substance C flow remains between the guide plate 20 and the surface of the roll 10.
As can be seen from the examples of the figures 1 - 5 the treatment substance C can applied directly or indirectly onto the fiber web W, for example corresponding surface of the roll 10 or the fabric or the belt in indirect application or correspond30 ing surface of the fiber web W or the pond P in direct application and the substance is flown via a guide surface onto the surface and the tip edge or the end part of the guide surface 20 is located in contact with the surface, onto which the substance is applied. The treatment substance C to be applied by the nozzle 15 of the application unit is coating color or sizing agent. The nozzle 15 is a substantially 35 full width slot nozzle of a curtain- or a jet-type nozzle or formed as a distribution channel structure comprising several apart from each other located openings on substantially full width of the fiber web, from which openings the treatment substance is guided onto the guide surface 20, which is inclined. The treatment substance C flow is guided by the guide surface 20 via which it is guided onto the surface of the fiber web W in direct application or onto the surface of the roll or the 5 fabric or the belt via which the substance is guided onto the surface of the fiber web in indirect application or to a pond formed between two surfaces, for example two rolls forming a nip, though which nip the fiber web runs.
20165927 prh 07-12- 2016
Reference signs used in the drawing roll roll nozzle
20 guide surface doctor blade support roll
C treatment substance
P pond
S direction of rotation
W fiber web
20165927 prh 07-12- 2016
20165927 prh 18-10-2017
Claims

Claims (13)

1. Menetelmä ainakin yhden ainekerroksen (C) vaahdon muodossa applikoimiseksi liikkuvalle kuiturainalle (W) applikointiyksikön ainakin yhden suuttimen (15) ainakin yhden aukon kautta, tunnettu siitä, että aine (C) virtaute-A method for applying at least one layer of material (C) in the form of a foam to a moving fibrous web (W) through at least one opening of at least one nozzle (15) of the application unit, characterized in that the material (C) 5 taan suutinaukosta (15) ohjauspinnalle (20), jolla ohjauspinnalla (20) aine (C) virtautetaan kohdepinnalle ja että ohjauspinnan (20) yksi pää on sijoitettu kosketukseen kohdepinnan, jolle aine applikoidaan, kanssa.5, the substance (C) is flowing to the target surface, and that one end of the guide surface (20) is in contact with the target surface to which the substance is applied. 2. Patenttivaatimuksen 1 mukainen menetelmä, tunnettu siitä, että aine (C) on ohjauspinnalla (20) ympäristön paineessa.Method according to claim 1, characterized in that the substance (C) is on the guide surface (20) at ambient pressure. 1010 3. Patenttivaatimuksen 1 tai 2 mukainen menetelmä, tunnettu siitä, että aine (C) applikoidaan suoraan tai epäsuoraan kuiturainalle (W) ohjauspinnalta (20).Method according to claim 1 or 2, characterized in that the substance (C) is applied directly or indirectly to the fibrous web (W) from the guide surface (20). 4. Jonkin patenttivaatimuksen 1 - 3 mukainen menetelmä, tunnettu siitä, että applikoitava aine (C) on päällystyspasta tai pintaliimausaine tai kostutusai-Method according to one of Claims 1 to 3, characterized in that the substance to be applied (C) is a coating paste or a surface sizing agent or a wetting agent. 15 ne tai muu kuiturainan ominaisuuksiin vaikuttava aine.15 or other substance affecting the properties of the fibrous web. 5. Jonkin patenttivaatimuksen 1 - 4 mukainen menetelmä, tunnettu siitä, että ainevirta ohjataan ohjauspinnalla (20) kuiturainan (W) pinnalle suorassa applikoinnissa tai telan (10) tai kudoksen tai hihnan pinnalle, jonka välityksellä aine ohjataan kuiturainan (W) pinnalle, epäsuorassa applikoinnissa taiMethod according to one of Claims 1 to 4, characterized in that the material flow is guided on the guiding surface (20) to the surface of the fibrous web (W) by direct application or indirectly to the surface of the roll (10) or fabric or belt or 20 lammikkoon (P), joka on muodostettu nipin muodostavan, jonka nipin kautta kuituraina kulkee, telaparin (10, 11) tai tela-kudosparin tai tela-hihnaparin tai kudos-hihnaparin tai kahden hihnan tai kudoksen väliin.20 ponds (P) formed between a pair of rolls (10, 11) or a pair of rolls or a pair of rolls or a web or belt forming a nip through which the fibrous web passes. 20165927 prh 18-10-201720165927 prh 18-10-2017 6. Jonkin patenttivaatimuksen 1 - 5 mukainen menetelmä, tunnettu siitä, ettäMethod according to one of Claims 1 to 5, characterized in that 25 ainakin yksi ainekerros vaahdon muodossa applikoidaan kuiturainalle (W) yksipuoleisesti tai kaksipuoleisesti.At least one layer of material in the form of a foam is applied to the fibrous web (W) unilaterally or bilaterally. 7. Järjestelmä ainekerroksen (C) applikoimiseksi vaahtoapplikoinnilla suoraan liikkuvalle kuiturainalle (W) tai liikkuvalle kuiturainalle (W) epäsuorasti ensin applikoimalla ainekerros (C) telan (10) tai kudoksen tai hihnan tai lammikonA system for applying a layer of material (C) by a foam application directly to a moving fibrous web (W) or to a moving fibrous web (W) indirectly by first applying a layer of material (C) to a roll (10) or fabric or belt or pond. 30 pinnalle, käsittäen applikointiyksikön ainakin yhden suuttimen (15) ainakin yhden aukon, tunnettu siitä, että suuttimen (15) alapuolelle on sijoitettu ohjauspinta (20), jonka ohjauspinnan (20) yksi pää on sijoitettu kosketukseen kohdepinnan, jolle aine applikoidaan, kanssa.30, comprising at least one opening of at least one nozzle (15) of the applicator unit, characterized in that a guide surface (20) is disposed beneath the nozzle (15) with one end of the guide surface (20) being in contact with the target surface. 8. Patenttivaatimuksen 7 mukainen järjestelmä, tunnettu siitä, että kohdepinta on kuiturainan (W) pinta suorassa applikointijärjestelmässä tai telan (10) pinta tai kudoksen pinta tai hihnan pinta tai lammikon pinta (P) epäsuorassa applikointijärjestelmässä.System according to Claim 7, characterized in that the target surface is the surface of the fibrous web (W) in the direct application system or the surface of the roll (10) or the fabric or the surface of the pond (P) in the indirect application system. 55 9. Patenttivaatimuksen 7 tai 8 mukainen järjestelmä, tunnettu siitä, että suutin (15) on olennaisesti täysleveä rakosuutin tai verho- tai suihku-tyyppinen suutin.A system according to claim 7 or 8, characterized in that the nozzle (15) is a substantially full-width slot nozzle or a curtain or jet type nozzle. 10. Patenttivaatimuksen 7 tai 8 mukainen järjestelmä, tunnettu siitä, että suutin (15) on muodostettu jakokanavarakenteisena käsittäen useita toisistaanSystem according to Claim 7 or 8, characterized in that the nozzle (15) is formed in a manifold structure comprising several 10 välimatkan päähän sijoitettuja aukkoja olennaisesti kuiturainan koko leveydellä, joista aukoista käsittelyaine ohjataan ohjauspinnalle (20).10 spaced apertures substantially across the width of the fibrous web from which apertures are applied to the guide surface (20). 11. Jonkin patenttivaatimuksen 7-10 mukainen järjestelmä, tunnettu siitä, että ohjauspinta (20) on sijoitettu siten, että aineen (C) virta on alaspäin viettävä suhteessa pintaan, jolle se applikoidaan.System according to one of Claims 7 to 10, characterized in that the guide surface (20) is arranged so that the flow of the substance (C) is downwardly directed in relation to the surface to which it is applied. 1515 12. Jonkin patenttivaatimuksen 7-11 mukainen järjestelmä, tunnettu siitä, että järjestelmä myös käsittää kaavinterän (28), joka on sijoitettu kohdepinnan liikkumissuunnassa ohjauspinnan (20) jälkeen.System according to one of Claims 7 to 11, characterized in that the system also comprises a doctor blade (28) disposed in the direction of movement of the target surface downstream of the guide surface (20). 13. Jonkin patenttivaatimuksen 7-12 mukainen järjestelmä, tunnettu siitä, että järjestelmä on sijoitettu kuiturainan valmistuslinjan viiraosalle tai puris20 tinosalle tai kuivatusosalle tai pintaliimausosalle tai päällystysosalle tai ka- lanteroimisosalle.A system according to any one of claims 7 to 12, characterized in that the system is disposed on a wire section or squeeze section or drying section or surface sizing section or coating section or calendering section of a fiber web production line.
FI20165927A 2016-12-07 2016-12-07 Method and system for applying a substance layer onto a moving fiber web by foam application FI127812B (en)

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FI20165927A FI127812B (en) 2016-12-07 2016-12-07 Method and system for applying a substance layer onto a moving fiber web by foam application
DE102017128240.8A DE102017128240A1 (en) 2016-12-07 2017-11-29 Method and system for applying a substance layer to a moving fibrous web by means of foam application
ATA50996/2017A AT519414B1 (en) 2016-12-07 2017-12-01 METHOD AND SYSTEM FOR THE APPLICATION OF A SUBSTANCE LAYER ON A MOVING FIBERWAY THROUGH THE FOAM PROCESSING

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KR20180064535A (en) 2015-11-03 2018-06-14 킴벌리-클라크 월드와이드, 인크. Paper tissue with high bulk and low lint
KR102165232B1 (en) 2017-11-29 2020-10-13 킴벌리-클라크 월드와이드, 인크. Fiber sheet with improved properties
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