WO2016051350A1 - Method for producing a foam web - Google Patents

Method for producing a foam web Download PDF

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Publication number
WO2016051350A1
WO2016051350A1 PCT/IB2015/057477 IB2015057477W WO2016051350A1 WO 2016051350 A1 WO2016051350 A1 WO 2016051350A1 IB 2015057477 W IB2015057477 W IB 2015057477W WO 2016051350 A1 WO2016051350 A1 WO 2016051350A1
Authority
WO
WIPO (PCT)
Prior art keywords
foam
web
wet
headbox
electron beam
Prior art date
Application number
PCT/IB2015/057477
Other languages
French (fr)
Inventor
Jan-Erik NORDSTRÖM
Jari RÄSÄNEN
Original Assignee
Stora Enso Oyj
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 Stora Enso Oyj filed Critical Stora Enso Oyj
Priority to PL15847724T priority Critical patent/PL3201392T3/en
Priority to CA2962711A priority patent/CA2962711C/en
Priority to CN201580053814.4A priority patent/CN107109792B/en
Priority to ES15847724T priority patent/ES2733424T3/en
Priority to EP15847724.0A priority patent/EP3201392B1/en
Priority to US15/516,278 priority patent/US10301775B2/en
Priority to BR112017006511-8A priority patent/BR112017006511B1/en
Publication of WO2016051350A1 publication Critical patent/WO2016051350A1/en

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/087—Particle radiation, e.g. electron-beam, alpha or beta radiation
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/001—Drying webs by radiant heating
    • D21F5/002—Drying webs by radiant heating from infrared-emitting elements
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/022—Heating the cylinders
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/30—Electron-beam or ion-beam tubes for localised treatment of objects
    • H01J37/317—Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. for ion implantation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/36—After-treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
    • H01J2237/30—Electron or ion beam tubes for processing objects
    • H01J2237/31—Processing objects on a macro-scale
    • H01J2237/316—Changing physical properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes

Definitions

  • the present invention relates to a method for producing a sterilized foam web.
  • the invention further relates to a sterilized foam web.
  • the invention relates to a foam product.
  • An object with the present invention is to provide a new method for producing a foam web, in a paper machine, which eliminates, or alleviates, at least some of the above mentioned drawbacks.
  • Yet another object is to provide a foam web, which comprises one or several layers, by using a headbox which allows a 3D-foam web with a high bulk to be obtained.
  • natural fibres will be used.
  • the term comprises wood fibres, botanical fibres, and/or their derivate or their mixtures.
  • the term “foam” or “wet foam” will be used.
  • the wet foam comprises a mixture of natural fibres, liquid and at least one additive. At least one of the additives is suitable to be
  • the liquid of the foam may be water or blends of water with various volatile solvents.
  • the liquid may be a totally solvent based liquid, such as methanol, ethanol, toluene etc.
  • the description further involves the term "sterilized foam web".
  • the term comprises a flat or 3D-formed foam web made from wet foam.
  • the foam web is suitably used to manufacture foam products, such as food containers, trays, cups, gas filters, air filters, liquid filters, mouth covers, insulations, sanitary pads and tampons etc.
  • foam products such as food containers, trays, cups, gas filters, air filters, liquid filters, mouth covers, insulations, sanitary pads and tampons etc.
  • foam products such as food containers, trays, cups, gas filters, air filters, liquid filters, mouth covers, insulations, sanitary pads and tampons etc.
  • Electron beam radiation is a process which involves the use of electrons, usually of high energy, to treat an object for a variety of purposes. Possible uses for electron radiation include
  • Electron energies typically vary from the keV to MeV range, depending on the depth of penetration required.
  • the radiation dose is usually measured in Gray (Gy) .
  • the inventive method is characterized in that the method comprising the steps of: - preparing a wet foam,
  • the sterilized foam web is characterized in that the web is obtained by the above mentioned method.
  • the foam product is characterized in that it is at least partly manufactured from the above foam web.
  • Figure 1 shows a schematic illustration of an apparatus arrangement in a paper machine for forming a single-layer of a sterilized foam web.
  • Figure 2 shows a schematic illustration of an apparatus arrangement in a paper machine for forming a multi-layer of a sterilized foam web.
  • the apparatus arrangement in Fig. 1 comprises a mixing reactor 7 for mixing wet foam 1.
  • the arrangement further comprises a forming section 2, 3a, 3b, 3c, 4, 5, 12 to form a sterilized foam web 6, 13 from the wet foam 1.
  • the mixing reactor 7 comprises feeding means 8, 9, 10 to add natural fibres 8, liquid 9 and additives 10 to the mixing reactor 7.
  • the reactor comprises mixing means (not shown in Fig. 1) for mixing the natural fibres 8, liquid 9 and additives 10 to form the wet foam 1.
  • the wet foam 1 is then transported to a headbox 2, 11.
  • the headbox 2, 11 uniformly distributes the wet foam 1 on to a moving wire 4, such that, a foam web 6, 13 is formed on the moving wire 4.
  • a foam web 6, 13 is formed on the moving wire 4.
  • the wire 4 may be a single wire 4, or a twin-wire 4 where the foam is located between the twin-wire 4.
  • the wire 4 section may involve a suction box in order to densify the foam further.
  • the headbox 2 may be a single-layer headbox 2, figure 1, or a multi-layer headbox 11, figure 2.
  • a single-layer headbox 2 distributes a single-layer foam web 6 on to the moving wire 4, wherein the foam web 6 comprising the wet foam 1.
  • a multi-layer headbox 11 distributes a multi ⁇ layer foam web 13 on the moving wire 4, wherein at least one of the layers comprising the wet foam 1.
  • the other layers in the multi-layer web may origin from foam suspension 14 with the same composition as the wet foam 1 or a foam suspension 14 with another composition with other properties than the wet foam 1.
  • the other layers may also origin from a non-foam suspension, such as, for example a fibre suspension 14 comprising natural fibres and liquid, or other suspensions 14 comprising synthetic or unnatural fibres, such as acrylic, polyester, rayon, nylon etc.
  • the multi-layer headbox 11 in figure 2 comprising a setup for manufacturing a multi-layer foam web with three layers, wherein at least one of the layers comprising a foam layer.
  • the wet foam 1 is subjected to electron beam radiation 3a, 3b, 3c.
  • the electron beam radiation immobilizes and sterilizes the wet foam 1, such that, the wet foam 1 becomes more stable and prevent that the wet foam 1 collapse when it hits the wire 4 and forms the foam web 6, 13. This will give a stable/stiff and
  • the electron beam radiation treatment 3a subjected to the wet foam is located in the headbox 2 , 11.
  • the electron beam radiation treatment 3b subjected to the wet foam is located after the headbox 2, 11.
  • the electron beam radiation treatment 3c subjected to the wet foam is located before the headbox 2, 11.
  • the electron beam radiation is adjusted to a certain level, such that, the generated electrons will pass and create the foam into the needed stiffness and structure prior drying.
  • thicknesses of foam can be created and to be stiffened using electron beam equipment.
  • crosslinking additives and various amounts of electron beam radiation it is possible to create various types of properties in the foam web from soft rubber-like to hard brittle structures for various applications, e.g. fibre structures that can carry load in high humidity
  • materials with various absorption and adsorption properties may be created i.e. induce e.g. hydrophobic and/or hydrophilic properties for various amphoteric materials and combinations with chosen
  • the electron beam treated foam web 6, 13 is transported by the wire 4 to the pressing section 12.
  • the pressing section 12 comprises at least one press 12, which presses liquid out of the foam web 6, 13.
  • the pressed web 6, 13 is then transported to the drying section 5 for drying the foam web.
  • the drying section 5 may comprise a hot drying cylinder 5, an IR (infra-red) heater 5, and/or hot air blowing dryers 5.
  • the invention may create various foam web types fast and accurately consisting of various components and
  • Electron beam radiation is not harmful to the working environment because it can be directed accurately and the amount that is passing the material can be caught through a roller or a collector-box located beneath the electron beam.
  • a major benefit with the invention is that all mixture of wet foam 1 which comprises natural fibres 8, liquid 9 and additives 10 (also electron beamable activators) are prepared in the mixing reactor just before the wet foam is distributed through the headbox.
  • the wet foam has a very short lifetime. This means that all the wet foam is used in the production of the foam web.
  • the main principle is fast foam, fast use and simultaneously fast fixing of the wet foam by electron beam treatment to form the 3D-structured foam. This allows that no returning to the circulations is needed, since all wet foam is used. The fast fixing of the foam will ensure a high speed production of the foam web.
  • the electron beam radiation acts with the electron beam radiation active compounds and results in a rigid network of fibres.
  • This rigidly of the structure may be adjusted by using different energy levels of electronic beam radiation. Hence, it is possible to achieve foam webs from flexible to hard rigid network. The foam web is immediately available to continue in to converting process to a foam product .
  • the electron beam radiation treatment may be located before the headbox, at the headbox, after the headbox or a combination of these mentioned.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Paper (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Method for producing a sterilized foam web, wherein the method comprising the steps of preparing a wet foam (1),feeding the wet foam (1) to a head box (2, 11),distributing the wet foam by the head box (2, 11),treating the wet foam (1) with electron beam radiation (3a, 3b, 3c) to immobilize and sterilize the wet foam (1),receiving the electron beam treated foam on a moving wire (4) to form a foam web (6, 13), pressing and the foam web (6, 13),and drying the foam web (6, 13).

Description

METHOD FOR PRODUCING A FOAM WEB
The present invention relates to a method for producing a sterilized foam web.
The invention further relates to a sterilized foam web.
Finally, the invention relates to a foam product.
Today there are known methods to produce various webs of foams in a paper machine by letting wet foam pass through a headbox to a moving wire and then dry the foam web, such as DE19857096, US55711383, DE19917809, US4686006 and US4285767.
However, it is not easy to dry the foam web with the use of conventional, paper machine, drying equipment's, such as IR or hot roll contact drying, without collapsing, or densifying, the foam layer. Moreover, the wet foam tends to collapse already when the wet foam hits the wire. An object with the present invention is to provide a new method for producing a foam web, in a paper machine, which eliminates, or alleviates, at least some of the above mentioned drawbacks. Yet another object is to provide a foam web, which comprises one or several layers, by using a headbox which allows a 3D-foam web with a high bulk to be obtained.
In the following description of the invention the term "natural fibres" will be used. In this context the term comprises wood fibres, botanical fibres, and/or their derivate or their mixtures. Moreover, the term "foam" or "wet foam" will be
frequently used. The wet foam comprises a mixture of natural fibres, liquid and at least one additive. At least one of the additives is suitable to be
stabilized/stiffened by electron beam radiation (see below) . The liquid of the foam may be water or blends of water with various volatile solvents. Moreover, the liquid may be a totally solvent based liquid, such as methanol, ethanol, toluene etc.
The description further involves the term "sterilized foam web". In this context the term comprises a flat or 3D-formed foam web made from wet foam. The foam web is suitably used to manufacture foam products, such as food containers, trays, cups, gas filters, air filters, liquid filters, mouth covers, insulations, sanitary pads and tampons etc. However, these are just examples and it is obvious that other foam products made from the inventive foam web are possible.
Moreover, the description comprises the term "electron beam radiation". Electron beam radiation is a process which involves the use of electrons, usually of high energy, to treat an object for a variety of purposes. Possible uses for electron radiation include
sterilization and to cross-link polymers. Electron energies typically vary from the keV to MeV range, depending on the depth of penetration required. The radiation dose is usually measured in Gray (Gy) .
The inventive method is characterized in that the method comprising the steps of: - preparing a wet foam,
feeding the wet foam to a head box,
- distributing the wet foam by the head box,
- treating the wet foam with electron beam radiation to immobilize and sterilize the wet foam,
- receiving the electron beam treated foam on a moving wire to form a foam web,
- pressing and the foam web, and
- drying the foam web.
The sterilized foam web is characterized in that the web is obtained by the above mentioned method. The foam product is characterized in that it is at least partly manufactured from the above foam web.
In the following, the invention will be described further with reference to the drawings, wherein:
Figure 1 shows a schematic illustration of an apparatus arrangement in a paper machine for forming a single-layer of a sterilized foam web. Figure 2 shows a schematic illustration of an apparatus arrangement in a paper machine for forming a multi-layer of a sterilized foam web.
The apparatus arrangement in Fig. 1 comprises a mixing reactor 7 for mixing wet foam 1. The arrangement further comprises a forming section 2, 3a, 3b, 3c, 4, 5, 12 to form a sterilized foam web 6, 13 from the wet foam 1.
The mixing reactor 7 comprises feeding means 8, 9, 10 to add natural fibres 8, liquid 9 and additives 10 to the mixing reactor 7. The reactor comprises mixing means (not shown in Fig. 1) for mixing the natural fibres 8, liquid 9 and additives 10 to form the wet foam 1. The wet foam 1 is then transported to a headbox 2, 11.
The headbox 2, 11 uniformly distributes the wet foam 1 on to a moving wire 4, such that, a foam web 6, 13 is formed on the moving wire 4. On the wire 4 the foam becomes dewatered/densified. The wire 4 may be a single wire 4, or a twin-wire 4 where the foam is located between the twin-wire 4. The wire 4 section may involve a suction box in order to densify the foam further.
The headbox 2 may be a single-layer headbox 2, figure 1, or a multi-layer headbox 11, figure 2. A single-layer headbox 2 distributes a single-layer foam web 6 on to the moving wire 4, wherein the foam web 6 comprising the wet foam 1. A multi-layer headbox 11 distributes a multi¬ layer foam web 13 on the moving wire 4, wherein at least one of the layers comprising the wet foam 1. The other layers in the multi-layer web may origin from foam suspension 14 with the same composition as the wet foam 1 or a foam suspension 14 with another composition with other properties than the wet foam 1. The other layers may also origin from a non-foam suspension, such as, for example a fibre suspension 14 comprising natural fibres and liquid, or other suspensions 14 comprising synthetic or unnatural fibres, such as acrylic, polyester, rayon, nylon etc.
The multi-layer headbox 11 in figure 2 comprising a setup for manufacturing a multi-layer foam web with three layers, wherein at least one of the layers comprising a foam layer. However, it is obvious that also more than three layers are possible and of course also a multi¬ layer comprising two layers. Before, and/or at the moment and/or after the wet foam 1 hits the wire 4, the wet foam 1 is subjected to electron beam radiation 3a, 3b, 3c. The electron beam radiation immobilizes and sterilizes the wet foam 1, such that, the wet foam 1 becomes more stable and prevent that the wet foam 1 collapse when it hits the wire 4 and forms the foam web 6, 13. This will give a stable/stiff and
sterilized foam web 6, 13 with a high bulk or well defined structure.
In a first embodiment, the electron beam radiation treatment 3a subjected to the wet foam is located in the headbox 2 , 11.
In a second embodiment, the electron beam radiation treatment 3b subjected to the wet foam is located after the headbox 2, 11.
In a third embodiment, the electron beam radiation treatment 3c subjected to the wet foam is located before the headbox 2, 11. The electron beam radiation is adjusted to a certain level, such that, the generated electrons will pass and create the foam into the needed stiffness and structure prior drying. By using various web speeds, and
adjustments in the headbox 2, 11 (solids content, chemicals, gas amount) , various properties and
thicknesses of foam can be created and to be stiffened using electron beam equipment. By using various
crosslinking additives and various amounts of electron beam radiation it is possible to create various types of properties in the foam web from soft rubber-like to hard brittle structures for various applications, e.g. fibre structures that can carry load in high humidity
conditions. Also materials with various absorption and adsorption properties may be created i.e. induce e.g. hydrophobic and/or hydrophilic properties for various amphoteric materials and combinations with chosen
polymers . The electron beam treated foam web 6, 13 is transported by the wire 4 to the pressing section 12. The pressing section 12 comprises at least one press 12, which presses liquid out of the foam web 6, 13. The pressed web 6, 13 is then transported to the drying section 5 for drying the foam web. The drying section 5 may comprise a hot drying cylinder 5, an IR (infra-red) heater 5, and/or hot air blowing dryers 5.
The invention may create various foam web types fast and accurately consisting of various components and
containing natural minerals and even, if needed, un- organic materials to provide new types of materials into needed packaging (soft/hard lightweight material to carry various products during transport and sales) and building needs, such as insulation, soundproofing, heat/fire retardant materials etc.
Moreover, by choosing suitable electron beam radiation level it is possible to harden the surface of the foam, whereas deeper in to the material a compressible spring¬ like material is achieved.
Electron beam radiation is not harmful to the working environment because it can be directed accurately and the amount that is passing the material can be caught through a roller or a collector-box located beneath the electron beam.
A major benefit with the invention is that all mixture of wet foam 1 which comprises natural fibres 8, liquid 9 and additives 10 (also electron beamable activators) are prepared in the mixing reactor just before the wet foam is distributed through the headbox. Hence, the wet foam has a very short lifetime. This means that all the wet foam is used in the production of the foam web. The main principle is fast foam, fast use and simultaneously fast fixing of the wet foam by electron beam treatment to form the 3D-structured foam. This allows that no returning to the circulations is needed, since all wet foam is used. The fast fixing of the foam will ensure a high speed production of the foam web.
So when the short lifetime wet foam is formed and fed out from the headbox, the flexibility of foam will be
immediately locked as it is by using electron beam radiation. The electron beam radiation acts with the electron beam radiation active compounds and results in a rigid network of fibres.
This rigidly of the structure may be adjusted by using different energy levels of electronic beam radiation. Hence, it is possible to achieve foam webs from flexible to hard rigid network. The foam web is immediately available to continue in to converting process to a foam product .
In the foregoing, the invention has been described on the basis of some specific embodiments. It is appreciated, however, that other embodiments and variants are possible within the scope of the following claims. For example the electron beam radiation treatment may be located before the headbox, at the headbox, after the headbox or a combination of these mentioned.

Claims

C L A I M S
1. Method for producing a sterilized foam web,
characterized in that the method comprising the steps of:
- preparing a wet foam (1), wherein the wet foam comprises a mixture of natural fibers, liquid and at least one additive suitable to be stabilized by electron beam radiation; - feeding the wet foam (1) to a head box (2, 11) ;
- distributing the wet foam by the head box (2, 11) ;
- treating the wet foam (1) with electron beam radiation (3a, 3b, 3c) to immobilize and sterilize the wet foam (1) before the wet foam hits a wire ( 4 ) ;
- receiving the electron beam treated foam on the moving wire (4) to form a foam web (6, 13) ;
- pressing and the foam web (6, 13), and
- drying the foam web (6, 13) .
2. Method according to claim 1, characterized in that the electron beam radiation (3a) is subjected to the wet foam (1) at the headbox (2, 11) .
3. Method according to claim 1, characterized in that the electron beam radiation (3b) is subjected to the wet foam (1) before the headbox (2, 11) .
. Method according to claim 1, characterized in that the electron beam radiation (3c) is subjected to the wet foam (1) after the headbox (2, 11) .
5. Method according to any of claims 1-4, characterized in that the headbox is a single-layer headbox (2), wherein the headbox (2) distributes the wet foam to form a single-layer foam web (6) on the moving wire (4) .
Method according to any of claims 1-4, characterized in that the headbox is a multi-layer headbox (11), wherein the headbox (11) distributes the wet foam (1) and at least one further suspension (14) to form a multi-layer foam web (13) on the moving wire (4) .
7. Method according to any of claims 1-6, characterized in that the drying comprising a hot cylinder for drying the foam web (6, 13) .
8. Method according to any of claims 1-6, characterized in that the drying comprising IR radiation for drying the foam web (6, 13) .
PCT/IB2015/057477 2014-10-03 2015-09-30 Method for producing a foam web WO2016051350A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PL15847724T PL3201392T3 (en) 2014-10-03 2015-09-30 Method for producing a foam web
CA2962711A CA2962711C (en) 2014-10-03 2015-09-30 Method for producing a foam web
CN201580053814.4A CN107109792B (en) 2014-10-03 2015-09-30 The method for producing foaming body web
ES15847724T ES2733424T3 (en) 2014-10-03 2015-09-30 Method to produce a foam band
EP15847724.0A EP3201392B1 (en) 2014-10-03 2015-09-30 Method for producing a foam web
US15/516,278 US10301775B2 (en) 2014-10-03 2015-09-30 Method for producing a foam web
BR112017006511-8A BR112017006511B1 (en) 2014-10-03 2015-09-30 Method for producing a foam blanket

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1451172A SE539865C2 (en) 2014-10-03 2014-10-03 Method for producing a foam web involving electron beam radiation
SE1451172-9 2014-10-03

Publications (1)

Publication Number Publication Date
WO2016051350A1 true WO2016051350A1 (en) 2016-04-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/057477 WO2016051350A1 (en) 2014-10-03 2015-09-30 Method for producing a foam web

Country Status (9)

Country Link
US (1) US10301775B2 (en)
EP (1) EP3201392B1 (en)
CN (1) CN107109792B (en)
BR (1) BR112017006511B1 (en)
CA (1) CA2962711C (en)
ES (1) ES2733424T3 (en)
PL (1) PL3201392T3 (en)
SE (1) SE539865C2 (en)
WO (1) WO2016051350A1 (en)

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US10301775B2 (en) * 2014-10-03 2019-05-28 Stora Enso Oyj Method for producing a foam web
US11255051B2 (en) 2017-11-29 2022-02-22 Kimberly-Clark Worldwide, Inc. Fibrous sheet with improved properties
US11313061B2 (en) 2018-07-25 2022-04-26 Kimberly-Clark Worldwide, Inc. Process for making three-dimensional foam-laid nonwovens
US11591755B2 (en) 2015-11-03 2023-02-28 Kimberly-Clark Worldwide, Inc. Paper tissue with high bulk and low lint

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