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WO2024251427A1 - Élément en bois avec un revêtement et procédé de production d'un élément en bois avec un revêtement, procédé de production et utilisation de l'élément en bois - Google Patents

Élément en bois avec un revêtement et procédé de production d'un élément en bois avec un revêtement, procédé de production et utilisation de l'élément en bois Download PDF

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Publication number
WO2024251427A1
WO2024251427A1 PCT/EP2024/061259 EP2024061259W WO2024251427A1 WO 2024251427 A1 WO2024251427 A1 WO 2024251427A1 EP 2024061259 W EP2024061259 W EP 2024061259W WO 2024251427 A1 WO2024251427 A1 WO 2024251427A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating
wooden element
wooden
polymer
polymer material
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.)
Pending
Application number
PCT/EP2024/061259
Other languages
German (de)
English (en)
Inventor
Reto Sieber
Marco Sieber
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.)
Silu Verwaltung AG
Original Assignee
Silu Verwaltung AG
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 Silu Verwaltung AG filed Critical Silu Verwaltung AG
Publication of WO2024251427A1 publication Critical patent/WO2024251427A1/fr
Anticipated expiration legal-status Critical
Pending 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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
    • B05D7/08—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood using synthetic lacquers or varnishes
    • 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
    • B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
    • 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
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
    • B05D3/141—Plasma treatment
    • B05D3/145—After-treatment

Definitions

  • the invention relates to a wooden element, in particular for construction purposes, with a coating and a method for producing such a wooden element.
  • Wood a renewable and CO2 -neutral raw material, is becoming increasingly important as a building element.
  • the mechanical properties of many types of wood allow the use of wooden elements, for example in the form of solid wood or cross-laminated timber, for structural components.
  • wood can be used largely untreated as a building element. This type of use is advantageous because no volatile and potentially harmful substances can be released over the long service life of the wooden element.
  • Wood elements are generally very easy to dismantle and dispose of.
  • Composite elements which have also been treated with chemical agents, fare poorly.
  • the state of the art also includes protective films that are applied to wooden elements by machine and then glued to them. Although this type of processing is faster than applying the protective films by hand, it has the same disadvantages when it comes to removability.
  • the present invention is therefore based on the object of creating an improved wooden element which is not affected by the aforementioned defects or is affected to a significantly lesser extent.
  • the wooden element should be well protected against the effects of the weather during construction phases.
  • the wooden element should be suitable for structural building purposes.
  • the wooden element should be easy to manufacture and largely free of solvents and, in particular, free of household toxins.
  • the wooden element should be accessible during the construction phase to the extent usual on construction sites, especially with sturdy footwear.
  • the wooden element should also be easy to dismantle or dispose of without leaving any residue.
  • a process for producing such a wooden element is also to be created.
  • the wooden element which is particularly suitable for use as a structural component, has a base body with at least one approximately planar side surface, which is at least partially covered with a polymer coating.
  • the polymer coating forms a material-locking connection with the wooden element.
  • the polymer coating has a peel strength of at least 3.0 N/25mm, preferably at least 3.2 N/25mm, particularly preferably at least 3.5 N/25mm, and a maximum of 15.0 N/25mm, preferably a maximum of 13.7 N/25mm, particularly preferably a maximum of 12.5 N/25mm.
  • the peel strength is measured with respect to the wood element according to the FINAT FTM1 test method. The peel test is carried out at 300 mm/min, with the adhesive forces being determined after 20 minutes.
  • the beech wood substrate is standardized according to DIN EN 205.
  • the polymer coating adheres well to the wooden element without the need for an adhesive. This reduces the material and manufacturing costs. In addition, recyclability is improved because the polymer coating can be removed from the wooden element largely without leaving any residue. This means that both the wooden element and the polymer material of the coating can be recycled or reused separately and largely without any foreign material.
  • the polymer coating protects the wooden element, especially during the construction phase, from damage caused by the weather, walking on it or by tools and other damage mechanisms typical of construction sites.
  • the polymer coating adheres well enough to the wooden element that it cannot slip when walked on or, for example, due to strong wind. This increases safety on the construction site and ensures constant protection of the wooden element through the polymer coating.
  • the polymer coating can be removed from the wooden element without leaving any residue.
  • the polymeric coating preferably has a minimum thickness of 10 pm, more preferably 30 pm, particularly preferably 50 pm. This The low thickness optimizes material costs and the minimum thickness allows the necessary mechanical resistance to be achieved.
  • the polymer coating is particularly preferably made of a material that has a melting point between 70°C and 300°C.
  • the material can therefore be easily processed at temperatures that are easy to handle industrially. The energy required to process the coating material is reduced.
  • the polymeric coating preferably comprises a thermoplastic polymer material, preferably a thermoplastic biopolymer, and/or a wood-polymer composite material.
  • the polymeric coating preferably comprises polyethylene, polypropylene, polyurethane, polyester, polyvinyl chloride, polystyrene, polyamide, ethylvinyl acetate, ethylene-vinyl acetate copolymers and/or ethylene-propylene-diene rubber.
  • the polymeric coating particularly preferably comprises a recycled polymer material and/or a compostable polymer material.
  • the polymeric coating preferably comprises mixtures of the aforementioned polymers and/or copolymers and/or terpolymers of the aforementioned polymers.
  • the polymeric coating can thus be produced from numerous materials, which enables properties optimized for the specific application at reduced costs.
  • the polymeric coating comprises a thermosetting polymer material and/or an elastomer and/or a hotmelt material.
  • the coating is made of a wood-plastic composite material. This allows the wood look of the wooden element to be retained despite the coating.
  • the polymer coating is preferably an extrusion product.
  • the polymer coating can therefore be produced easily, quickly and cost-effectively, especially in large quantities.
  • the polymer coating is produced by co-extrusion.
  • the polymeric coating is the product of a melt casting process, a casting process, a rolling process or a combination of the aforementioned processes.
  • the polymer coating has several layers lying on top of each other and bonded together. This allows optimization.
  • Corona treatment and/or plasma treatment is preferably applied to the polymer coating. This type of post-treatment optimizes the material properties of the polymer coating.
  • the polymer coating is designed to be flame-retardant and/or flame-retardant and/or flame-resistant.
  • the polymer coating is preferably designed to be UV-resistant, particularly preferably by adding additives to the coating.
  • the polymer coating covers the wooden element in strips, with uncoated wooden sections lying between the strips.
  • the polymeric coating covers at least 70%, more preferably at least 80%, particularly preferably at least 90% of at least one side surface of the wooden element.
  • the polymer coating completely covers at least one side surface of the wooden element.
  • the polymer coating has no openings, pores or holes that extend through to the wooden element. The wooden element is thus optimally protected by the polymer coating.
  • the polymer coating is optically at least partially transparent.
  • a label and/or a marking and/or a colored symbol is applied to the wooden element, which is visible through the polymer coating.
  • safety or processing instructions can be attached in a safe and legible manner for a long time.
  • the lettering is printed on the polymer coating. This simplifies printing compared to printing on wood.
  • the polymer coating can also preferably be colored, which allows for decorative design options. The printing can be produced using printing machines known from the state of the art.
  • the polymer coating can particularly preferably be removed from the wooden element with at least almost no residue. The recyclability of both the material of the polymer coating and the uncoated wooden element is thus improved.
  • the wood element is preferably a solid wood, a cross-laminated timber, a multi-layer board, a soft fibre board, a wood-based panel or a hard wood or preferably comprises at least one of the aforementioned materials.
  • the wood element is particularly preferably a wood-based panel, a plasterboard or a cellulose-based workpiece.
  • the coating preferably has a structured surface on the side facing away from the wooden element to increase slip resistance. This can help prevent accidents when walking on construction sites, especially in wet weather.
  • the coating is designed in such a way that knotholes, cracks, gaps and other defects and irregularities in the wooden element are sealed by the coating. This means that the particularly vulnerable elements in the wooden element are well protected against water and moisture.
  • a fleece or a grid is arranged on the side of the coating facing away from the wooden element.
  • the fleece or grid is firmly bonded to the coating and/or at least partially embedded in the coating.
  • the coating is preferably free of household toxins, in particular free of household toxins according to Emicode®.
  • the coating is particularly preferably in class EC1+ according to Emicode®.
  • the coating preferably contains less than 5 percent by weight of volatile substances. The coating therefore does not pose a health risk, even if it is left on the wooden element.
  • the coating preferably has an sd value between 0.1m and 20m.
  • the coating is particularly preferably vapor-barrier.
  • the coating is arranged directly on the wooden element without intermediate layers.
  • the coating therefore has the preferred adhesive properties in particular without the use of adhesives.
  • the production of a wooden element according to the invention is preferably carried out by a method also according to the invention.
  • the process for increasing the weather resistance of wooden elements, in particular structural elements made of wood comprises the following process steps:
  • the wooden element is also heated, at least in the area of the flat surface, by the applied heated polymer material.
  • the method additionally comprises the method step:
  • polymer material with a roller, preferably with an embossing roller.
  • the method additionally comprises the method step:
  • the polymer material When heated, the polymer material has only a low level of adhesion to the wooden element. When cooled, the bonding strength is increased.
  • the polymer material is heated to at least 150°C, preferably at least 165°C, more preferably at least 180°C.
  • the polymer material is heated to a temperature which is at least 20°C higher than the glass transition temperature of the polymer material.
  • Fig. 1a a base body 2 of a wooden element with a planar side surface 21;
  • Fig. ib a wooden element 1 according to the invention with a coating 3;
  • Fig. 2 shows a device for producing a wooden element according to the invention.
  • Fig. la shows the base body 2 of a wooden element with a planar side surface 21.
  • the base body has an elongated and beam-like shape.
  • Fig. ib shows a wooden element 1 according to the invention with a coating 3.
  • the coating 3 is arranged on the planar side surface 21 of the base body 2 and is integrally connected thereto.
  • Fig. 2 shows a device for producing a wooden element according to the invention.
  • the base body 2 is moved in the direction of the arrow with the side surface 21 to be coated facing upwards on conveyor means 5, 5', 5" past a coating unit 6.
  • the coating unit 6 comprises an application element 61, by means of which the polymer material is applied as a coating 3 to the side surface 21 of the base body 2.
  • the polymer material is stored in a material supply 8 and is continuously fed to the coating unit 6 via a connecting line 7.
  • any combination of the embodiments of the wooden element and the method described in the figures and the description is also in accordance with the invention.
  • individual features of the embodiments described can be combined with one another in accordance with the invention.
  • the wooden element according to the invention is not only suitable for construction purposes, but is also suitable for decorative purposes, garden design or other areas. list of reference symbols

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un élément en bois (1), en particulier un élément en bois destiné à être utilisé en tant que composant structural, ayant un corps principal (2) avec une face latérale au moins approximativement plane (21) qui est au moins partiellement recouverte d'un revêtement polymère (3), le revêtement polymère (3) formant une liaison intégrale avec l'élément en bois. Selon l'invention, le revêtement polymère (3) présente une résistance au pelage d'au moins 3,0 N/25 mm et d'au plus 15,0 N/25 mm.
PCT/EP2024/061259 2023-06-05 2024-04-24 Élément en bois avec un revêtement et procédé de production d'un élément en bois avec un revêtement, procédé de production et utilisation de l'élément en bois Pending WO2024251427A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023205228.8 2023-06-05
DE102023205228.8A DE102023205228A1 (de) 2023-06-05 2023-06-05 Holzelement mit einer Beschichtung und Verfahren zur Herstellung eines Holzelements mit einer Beschichtung

Publications (1)

Publication Number Publication Date
WO2024251427A1 true WO2024251427A1 (fr) 2024-12-12

Family

ID=90904686

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/061259 Pending WO2024251427A1 (fr) 2023-06-05 2024-04-24 Élément en bois avec un revêtement et procédé de production d'un élément en bois avec un revêtement, procédé de production et utilisation de l'élément en bois

Country Status (2)

Country Link
DE (1) DE102023205228A1 (fr)
WO (1) WO2024251427A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080032046A1 (en) * 2006-08-03 2008-02-07 Sporn Alan R Process for applying protective coatings to railroad crossties, telephone poles and telephone pole crossties
WO2010008559A2 (fr) * 2008-07-16 2010-01-21 Eastman Chemical Company Formulations thermoplastiques pour aptitude à la peinture, ténacité et aptitude au traitement à chaud améliorées
US9976064B2 (en) * 2013-03-22 2018-05-22 Jowat Ag Adhesive compositions based on renewable raw materials and use thereof
WO2023274613A1 (fr) * 2021-07-02 2023-01-05 Jowat Se Revêtement de bords de substrats, en particulier de substrats en forme de plaque

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1068205A (fr) * 1975-03-27 1979-12-18 Yutaka Hori Stratifie thermocurable
US4143187A (en) * 1977-12-01 1979-03-06 Du Pont Of Canada Limited Process for coating sheet substrates with thermoplastic polymer
DE10315458B4 (de) * 2003-04-04 2010-11-04 Lohmann Gmbh & Co. Kg Verfahren zur Herstellung von klebenden Prozeß- oder Schutzfolien, dadurch erhältliche haftklebende Ezeugnisse und deren Verwendung zum vorübergehenden Fixieren und Bedecken sowie zum Transportieren von Werkstücken
DE102006012017A1 (de) * 2005-03-15 2006-09-28 Henkel Kgaa Klebeband mit einem mehrschichtigen Aufbau
US20100108235A1 (en) * 2007-03-22 2010-05-06 Parmley Ronald L Coating for architectual pieces, coated peces, and methods of making and using them
WO2010009854A1 (fr) * 2008-07-23 2010-01-28 Tesa Se Bande adhésive comportant un support composé d'un tissu
US20140087156A1 (en) * 2011-05-25 2014-03-27 Diversey, Inc. Surface coating system and method of making and using same
AU2012244167B2 (en) * 2012-10-24 2014-05-29 3M Innovative Properties Company Peelable flexible coating, compositions and methods thereof
EP2977524B1 (fr) * 2014-07-25 2016-09-14 Flooring Technologies Ltd. Panneau en bois à émission sonore réduite et son procédé de fabrication
DE102016124555A1 (de) * 2016-12-15 2018-06-21 Nora Systems Gmbh Bodenbelag und Verfahren zu dessen Herstellung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080032046A1 (en) * 2006-08-03 2008-02-07 Sporn Alan R Process for applying protective coatings to railroad crossties, telephone poles and telephone pole crossties
WO2010008559A2 (fr) * 2008-07-16 2010-01-21 Eastman Chemical Company Formulations thermoplastiques pour aptitude à la peinture, ténacité et aptitude au traitement à chaud améliorées
US9976064B2 (en) * 2013-03-22 2018-05-22 Jowat Ag Adhesive compositions based on renewable raw materials and use thereof
WO2023274613A1 (fr) * 2021-07-02 2023-01-05 Jowat Se Revêtement de bords de substrats, en particulier de substrats en forme de plaque

Also Published As

Publication number Publication date
DE102023205228A1 (de) 2024-12-05

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