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WO2002045869A1 - Procede d'application a sec de matieres adhesives et a effet barriere sur des bandes et utilisation dudit procede - Google Patents

Procede d'application a sec de matieres adhesives et a effet barriere sur des bandes et utilisation dudit procede Download PDF

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Publication number
WO2002045869A1
WO2002045869A1 PCT/FI2001/001059 FI0101059W WO0245869A1 WO 2002045869 A1 WO2002045869 A1 WO 2002045869A1 FI 0101059 W FI0101059 W FI 0101059W WO 0245869 A1 WO0245869 A1 WO 0245869A1
Authority
WO
WIPO (PCT)
Prior art keywords
dry
web
barrier
onto
application
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.)
Ceased
Application number
PCT/FI2001/001059
Other languages
English (en)
Inventor
Juha Maijala
Timo R. Nyberg
Veli KÄSMÄ
Kaisa Putkisto
Petri Peiponen
Toivo Kärnä
Kerstin Meinander
Mikael Skrifvars
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.)
Dynea Chemicals Oy
Valmet Technologies Oy
Original Assignee
Metso Paper Oy
Dynea Chemicals 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 Metso Paper Oy, Dynea Chemicals Oy filed Critical Metso Paper Oy
Priority to DE60139425T priority Critical patent/DE60139425D1/de
Priority to FI20030835A priority patent/FI20030835A7/fi
Priority to EP01999438A priority patent/EP1409152B1/fr
Priority to AT01999438T priority patent/ATE437704T1/de
Priority to AU2002216141A priority patent/AU2002216141A1/en
Publication of WO2002045869A1 publication Critical patent/WO2002045869A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B05D1/06—Applying particulate materials
    • 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
    • D21H23/50—Spraying or projecting
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
    • D21H21/52—Additives of definite length or shape

Definitions

  • the present invention relates to dry polymeric materials, especially to dry materials useful as barrier or adhesive materials in dry-application onto a surface, such as polymer film, aluminium foil or the like and especially onto a moving web.
  • the invention particularly relates to dry-application of barrier polymers and/or lamination adherents onto a web.
  • Barrier polymers are widely used in packaging materials to avoid or decrease the penetration of water vapour, fat, odours, microbes, etc. through packages. As very few materials stop the penetration of all these media, multilayer structures are often needed.
  • the manufacture of barrier layers is usually performed by extrusion of thermoplastic materials, such as variations of polyethylene and polypropylene, but also by dispersion coating.
  • the required polymers are molten and applied onto the web through a slit as a thin film.
  • the hot film adheres to the web mechanically, or in some cases, by means of an adherent material earlier applied to the web.
  • One major disadvantage of this method is that the polymer material has to be heated until it is completely molten and then it is forced through the slit. Both the heat and the mechanical force (shear stress) lead to the breakdown of the polymer structure, causing decrease in mechanical properties, and sometimes decomposition.
  • solvents or other liquid media are used, which require drying steps and consume energy.
  • An object of the invention is a method for the dry-application of barrier and/or adhesive material(s) onto a surface or a web.
  • a further object of the invention is a method for the manufacture of materials, especially packaging materials and laminates, comprising one or several layers of barrier polymers.
  • a further object of the invention is the use of a dry-application method based on ionic blasting for the application of barrier and/or adhesive material(s) onto a surface or a web.
  • paper, board, polymer film, metal foil or other surface or web optionally a moving web may be coated by using a dry-application method with barrier and/or adhesive materials applicable in dry form.
  • small particles are applied onto a web or a surface without contacting it, by means of ionic blasting provided by high voltage, wherein the particles are charged by the ions formed by corona discharge. Thereafter, an electric field transfers the charged particles onto the web or the surface.
  • Suitable barrier and adhesive materials are polymeric materials, such as polyethylene, polypropylene, ethyl vinylacetate, polyvinyl alcohols, polyamides, ionomeres, copolymers of vinylidene chloride and methyl acrylate and the like, which are frequently used in extrusion applications, and thermoplastic biodegradable polymers, such as polylactides, polyglycolides and their copolymers.
  • polystyrene polystyrene
  • polyacrylate polymethacrylate
  • poly(styrene-acrylate)copolymers plastic pigments based on melamin-formaldehyde and urea-formaldehyde or combinations thereof. If the polymeric materials are supplied as aqueous dispersions they must be dried before the dry-application. This procedure is described in patent applications FI-991438 and FI-991742.
  • the essential features of the polymers in the dry-application method are particle size, glass transition temperature (T g ) and electrostatic properties.
  • the typical diameter size of the particles, or particle agglomerates is between 0.01 and 500 ⁇ m, preferable between 1 and 50 ⁇ m.
  • the glass transition temperature (T g ) is preferably more than 40°, depending on the surface or web material used and on characteristics of the polymer.
  • the polymer shall either be grindable or dryable and often a grinder is used in connection with application.
  • the barrier and/or adhesive material i.e. the polymer powder is applied onto the web or the surface, which can optionally be a moving web, by using the dry- application method based on ionic blasting.
  • the web or surface is selected from paper, board, polymeric film, metal foils such as aluminium foil, or the like. If the applied layer is to be the surface of a product and it is intended to be left uncovered, the powder layer may be covered with a film (polyethylene terephthalate or other non-sticking material) to avoid potential sticking of the polymer material to the surface of the calender rolls during fixing.
  • the fixing is performed at temperatures suitable for the powder material, depending on nip pressure and calender speed.
  • the method according to the invention has several advantages over the state of the art.
  • the degrading effect of thermo-mechanical treatment on the polymeric material is decreased.
  • Such materials are for example thermoplastic biodegradable polymers, such as polylactides, polyglycolides and their copolymers.
  • the dry-application methods allows the introduction of the adhesive layer in the lamination process without solvents or other liquid media, thus avoiding drying steps and saving energy.
  • the dry-application method allows one or more layers of one or different polymers to be applied before fixation. Also the thickness of the applied dry layer can be varied starting from very thin ( ⁇ 1 g/m 2 ) layers.
  • the fixing parameters such as characteristics of the powder material, temperature, nip pressure and calender speed will define the upper limit for each product.
  • PET-film (17.0 g/m 2 ) and aluminium foil, but depending on the intended use any kind of web material can be used.
  • the dry-application barrier and/or adhesive materials where chosen among materials used in paper coating and lamination, especially in extrusion applications. These materials are usually provided in the form of pellets with a diameter of 1-2 mm, and the material must thus be grounded to a powder before application.
  • the tests were made with powders produced with a laboratory grinder. To avoid sticking the pellets were fed into the grinder together with dry ice. This grinder had a 0.25 mm screen, resulting in that the biggest fraction of the polymer powder was 0.25 mm.
  • the powders were applicated to the webs by a laboratory dry coating device. The feeding was kept constant in all trials (24 g/m 2 ).
  • the produced structures were tested for grammage, thickness and pinholes. For some samples the water vapour transmission rate (WVTR) was measured, too. Additionally the lamination structures were tested for delamination. For all materials the applicability of the material upon the web and the appearance of the produced structure were visually assessed.
  • WVTR water vapour transmission rate
  • Polyethylene powder with a particle size (diameter) below 0.25 mm was applied onto a paper web by using dry-application technique.
  • the application of the polyethylene powder onto the paper was satisfying, however the coating amount varied much, from 12.1 to 26.0 g/m2, the average being 18.2 g/m 2 .
  • the thickness varied between 19.6 and 25.1 ⁇ m, average 22.6 ⁇ m.
  • Table 2 The results are presented in Table 2.
  • the water vapour transmission rate was best (lowest) for samples prepared at 190°C, approximately 145 g/m 2 /day. Table 1. Grammage and thickness of raw materials
  • Saran MA 119 a copolymer of vinylidene chloride and methyl acrylate, was applied onto a paper web by using dry-application technique. The application of
  • Saran was good and quite uniform as can be seen from Table 2. Due to the higher melting temperature of Saran a calender temperature of 190 °C was used at all three nip pressures. Adhesion to both paper and PET film was good, but there was no adhesion of Saran to aluminium foil. There were only a few pinholes in the paper/PET-laminate, at nip pressures 100 and 150 bar about 25 holes/m 2 , but at low nip pressure (50 bar) no pinholes could be found. The PET film itself showed no pinholes. The water vapour transmission rate was 1.4 - 4.7 g/m 2 /day, decreasing with higher nip pressure.
  • Example 3 Example 3:
  • the polylactide sample was a non-commercial sample of poly(L-lactide) with a molecular weight of about 90 000 g/mole.
  • the material was applied to the paper web using the dry-application technique. Uneven ground powder polylactide led to an uneven application result. The adhesion to paper and PET film was, however, good.
  • Superchlon HE-505 a chlorinated polyethylene, was applied onto a paper web by using dry-application technique. The application of Superchlon was good and uniform. The material has a higher melting point than the other polymers used, and needed a calander temperature of at least 210 °C for melting. All three nip pressures were tried. The adhesion to both paper and PET film was good.

Landscapes

  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Wrappers (AREA)

Abstract

L'invention se rapporte à des matières polymères sèches, particulièrement des matières sèches utiles en tant que matières à effet barrière ou adhésives pour l'application à sec sur une surface, telle qu'un film polymère, une feuille d'aluminium ou analogue et particulièrement sur une bande en défilement. Cette invention se rapporte particulièrement à l'application à sec de polymères à effet barrière et/ou de produits adhésifs de contrecollage sur une bande. Selon ce procédé d'application à sec de matières à effet barrière et/ou adhésives sur des bandes ou des surfaces, une matière polymère pulvérulente dont la taille des particules ou des agglomérats de particules est comprise entre 0,01 et 500 νm, de préférence entre 1 et 50 νm, est appliquée à sec par bombardement ionique sur une bande ou une surface qui peut être composée de papier ou de carton ou être un film polymère ou une feuille métallique et qui est éventuellement une bande en défilement.
PCT/FI2001/001059 2000-12-07 2001-12-05 Procede d'application a sec de matieres adhesives et a effet barriere sur des bandes et utilisation dudit procede Ceased WO2002045869A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE60139425T DE60139425D1 (de) 2000-12-07 2001-12-05 Verfahren und verwendung eines verfahrens für die trockenanwendung von sperr- und klebmaterialien auf bahnen
FI20030835A FI20030835A7 (fi) 2000-12-07 2001-12-05 Menetelmä sulku- ja liimamateriaalien kuiva-applikoimiseksi rainoille ja menetelmän käyttö
EP01999438A EP1409152B1 (fr) 2000-12-07 2001-12-05 Procede d'application a sec de matieres adhesives et a effet barriere sur des bandes et utilisation dudit procede
AT01999438T ATE437704T1 (de) 2000-12-07 2001-12-05 Verfahren und verwendung eines verfahrens für die trockenanwendung von sperr- und klebmaterialien auf bahnen
AU2002216141A AU2002216141A1 (en) 2000-12-07 2001-12-05 Method and use of a method for the dry application of barrier and adhesive materiels on webs

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20002678 2000-12-07
FI20002678A FI20002678A0 (fi) 2000-12-07 2000-12-07 Menetelmä sulku- ja liimamateriaalien kuiva-applikoimiseksi rainoille

Publications (1)

Publication Number Publication Date
WO2002045869A1 true WO2002045869A1 (fr) 2002-06-13

Family

ID=8559660

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2001/001059 Ceased WO2002045869A1 (fr) 2000-12-07 2001-12-05 Procede d'application a sec de matieres adhesives et a effet barriere sur des bandes et utilisation dudit procede

Country Status (6)

Country Link
EP (1) EP1409152B1 (fr)
AT (1) ATE437704T1 (fr)
AU (1) AU2002216141A1 (fr)
DE (1) DE60139425D1 (fr)
FI (1) FI20002678A0 (fr)
WO (1) WO2002045869A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003076083A1 (fr) * 2002-03-14 2003-09-18 Metso Paper, Inc. Procede de formation d'un film par utilisation de forces electrostatiques
WO2004044323A1 (fr) * 2002-11-14 2004-05-27 Metso Paper, Inc. Procede de recouvrement
WO2005000482A1 (fr) * 2003-06-27 2005-01-06 National Starch And Chemical Investment Procede pour l'application electrostatique d'un adhesif pulverulent sur un substrat non metallique, et substrat revetu ainsi obtenu
DE102009003473A1 (de) 2009-02-12 2010-09-23 Fsd Folienservice Deutschland Gmbh Kaschierverfahren sowie Kaschiervorrichtung
EP4123089A1 (fr) * 2021-07-21 2023-01-25 Teknos Group Oy Procédé de production d'un article fibreux revêtu

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1285551A (en) * 1969-05-28 1972-08-16 British Industrial Plastics Production of foils
US3919345A (en) * 1974-03-04 1975-11-11 Ford Motor Co Powdered coating composition containing polyanhydride, epoxy and anhydride functional copolymer and flow control agent
US4027366A (en) * 1973-08-02 1977-06-07 Beatrice Foods Co. Multilayer coated substrate
US4296142A (en) * 1978-06-26 1981-10-20 Union Carbide Corporation Method for coating a tubular food casing
US5176755A (en) * 1990-02-14 1993-01-05 Armco Inc. Plastic powder coated metal strip
WO2001000713A1 (fr) 1999-06-24 2001-01-04 Dynea Chemicals Oy Pigment polymere applicable a sec

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1285551A (en) * 1969-05-28 1972-08-16 British Industrial Plastics Production of foils
US4027366A (en) * 1973-08-02 1977-06-07 Beatrice Foods Co. Multilayer coated substrate
US3919345A (en) * 1974-03-04 1975-11-11 Ford Motor Co Powdered coating composition containing polyanhydride, epoxy and anhydride functional copolymer and flow control agent
US4296142A (en) * 1978-06-26 1981-10-20 Union Carbide Corporation Method for coating a tubular food casing
US5176755A (en) * 1990-02-14 1993-01-05 Armco Inc. Plastic powder coated metal strip
WO2001000713A1 (fr) 1999-06-24 2001-01-04 Dynea Chemicals Oy Pigment polymere applicable a sec

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003076083A1 (fr) * 2002-03-14 2003-09-18 Metso Paper, Inc. Procede de formation d'un film par utilisation de forces electrostatiques
US7288291B2 (en) 2002-03-14 2007-10-30 Metso Paper, Inc. Method for forming a film, by using electrostatic forces
WO2004044323A1 (fr) * 2002-11-14 2004-05-27 Metso Paper, Inc. Procede de recouvrement
WO2005000482A1 (fr) * 2003-06-27 2005-01-06 National Starch And Chemical Investment Procede pour l'application electrostatique d'un adhesif pulverulent sur un substrat non metallique, et substrat revetu ainsi obtenu
DE102009003473A1 (de) 2009-02-12 2010-09-23 Fsd Folienservice Deutschland Gmbh Kaschierverfahren sowie Kaschiervorrichtung
EP4123089A1 (fr) * 2021-07-21 2023-01-25 Teknos Group Oy Procédé de production d'un article fibreux revêtu

Also Published As

Publication number Publication date
ATE437704T1 (de) 2009-08-15
AU2002216141A1 (en) 2002-06-18
EP1409152A1 (fr) 2004-04-21
DE60139425D1 (de) 2009-09-10
FI20002678A0 (fi) 2000-12-07
EP1409152B1 (fr) 2009-07-29

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