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WO2025149528A1 - Procédé de fabrication d'un panneau de coffrage en béton réutilisable et panneau de coffrage en béton - Google Patents

Procédé de fabrication d'un panneau de coffrage en béton réutilisable et panneau de coffrage en béton

Info

Publication number
WO2025149528A1
WO2025149528A1 PCT/EP2025/050349 EP2025050349W WO2025149528A1 WO 2025149528 A1 WO2025149528 A1 WO 2025149528A1 EP 2025050349 W EP2025050349 W EP 2025050349W WO 2025149528 A1 WO2025149528 A1 WO 2025149528A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating composition
concrete formwork
coating
component
formwork panel
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/EP2025/050349
Other languages
German (de)
English (en)
Inventor
Norbert Kalwa
Georg Seidack
Christoph Schumacher
Sebastian Rauer
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.)
Swiss Krono Tec AG
Original Assignee
Swiss Krono Tec 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 Swiss Krono Tec AG filed Critical Swiss Krono Tec AG
Publication of WO2025149528A1 publication Critical patent/WO2025149528A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • 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
    • B05D3/02—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 baking
    • B05D3/0254—After-treatment
    • 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
    • B05D3/12—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 mechanical means
    • 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
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/04—Forming boards or similar elements the form surface being of wood
    • 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
    • B05D2203/00—Other substrates
    • B05D2203/20—Wood or similar material
    • 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
    • B05D2252/00—Sheets
    • B05D2252/10—Applying the material on both sides
    • 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
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/20—Aqueous dispersion or solution
    • 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
    • B05D2518/00—Other type of polymers

Definitions

  • the invention relates to a method for producing a multi-use concrete formwork panel, in particular for exposed concrete, and to a concrete formwork panel for multiple use in concrete casting, in particular for exposed concrete.
  • Formwork is required as an aid for a variety of concrete projects on construction sites.
  • State-of-the-art formwork includes both very high-quality and correspondingly expensive formwork, as well as lower-quality and correspondingly inexpensive formwork.
  • High-quality formwork is typically system formwork used in conjunction with an assembly/fastening system and is usually made of laminated plywood or laminated solid wood panels. These high-quality formwork panels are designed to be used for as long as possible and for multiple uses. However, their reuse is limited, typically ten to fifteen times. The disadvantages of these formwork panels are their high price and their lack of customization, as they usually cannot be cut to the required size.
  • the more cost-effective formwork panels are usually uncoated chipboard or coarse particleboard. These can usually only be used once and therefore often remain in the building as so-called permanent formwork, for example, in the ground near foundations.
  • these cost-effective but low-quality formwork panels have the disadvantage that attempts to remove the formwork panels can lead to demolding problems and damage to the formwork panels, thus making reuse impossible. is excluded.
  • swelling of the formwork panels typically occurs during first use, which on the one hand almost rules out reuse and on the other hand creates an uneven, wavy structure on the concrete surface, making these formwork panels unsuitable for use in exposed concrete.
  • these simple formwork panels often do not have any edge sealing, which also means that reuse is typically not possible.
  • edge sealing is either not necessary due to the significantly better carrier material (plywood, wood) or high-quality tongue and groove systems made of metal are used, particularly frequently in so-called system formwork, which again leads to increased production costs.
  • a concrete formwork panel is basically a single panel of a formwork into which fresh concrete is poured and thus formed until it solidifies and hardens sufficiently to support itself and other loads and to hold its shape determined by the formwork.
  • the concrete formwork panel not only defines the shape of the concrete, but also forms the contact surface with the liquid concrete, thus significantly influencing the surface quality of the concrete.
  • the concrete formwork panel is therefore intended to form a formwork.
  • the concrete formwork panel can be used with any setting and/or hardening building material, particularly concrete, but also, for example, with any type of screed. Its use is therefore not exclusively limited to concrete, even if the concrete formwork panel is primarily designed to form formwork for concrete elements, particularly exposed concrete elements.
  • the concrete formwork panel can be simply a plate-shaped workpiece for arbitrary attachment as part of a concrete formwork or, as part of a formwork system, can have permanently arranged fastening elements.
  • the concrete formwork panel according to the invention is formed exclusively from the base body or the chipboard or coarse particle board and/or has no further components or fastening elements in order to be able to be manufactured particularly cost-effectively and, if necessary, also to a specific size, for example by cutting.
  • a particularly advantageous feature is that (coarse) particle boards are typically manufactured in a width of up to 2800 mm. This allows all common concrete formwork formats to be manufactured with minimal waste.
  • the concrete formwork panel is based on a chipboard or a coarse particle board, also known as OSB (Oriented Strand Board), with two cover sides and intermediate side surfaces, which thus form the basic body of the concrete formwork panel.
  • OSB Oriented Strand Board
  • the concrete formwork panel also has The surface preferably has a substantially uniform thickness or material strength.
  • the two facing sides are preferably the two opposite, large-area sides of the chipboard or the coarse chipboard. Accordingly, one facing side is preferably a top side and the other facing side is a bottom side of the chipboard or the coarse chipboard.
  • the concrete formwork panel or the chipboard or the coarse chipboard is preferably rectangular and accordingly has four side surfaces.
  • the chipboard or the coarse particle board can, in principle, have either an unchanged surface after production of the board or a machined surface.
  • the surface of the chipboard, and in particular of a coarse particle board is sanded before the coating composition is applied.
  • a sanded chipboard or coarse particle board is provided in the method according to the invention.
  • a non-post-treated and/or unsanded chipboard or coarse particle board can also be used, thus enabling particularly favorable production of a concrete formwork panel.
  • the base body or the concrete formwork panel - apart from the coating - is formed exclusively from the chipboard or the coarse particle board and/or comprises no other materials than the chipboard or the coarse particle board and the material of the coating composition.
  • each concrete formwork panel is formed from a single chipboard or coarse chipboard.
  • a chipboard is preferably formed exclusively from chip material.
  • a coarse chipboard is preferably formed exclusively from coarse chip material.
  • the concrete formwork panel it is also conceivable for the concrete formwork panel to be formed not from a pure chipboard or a pure coarse chipboard, but from a multi-layer hybrid panel, wherein preferably at least one layer is a chip layer or a coarse chip layer and particularly preferably the entire hybrid panel is formed exclusively from chip and coarse chip layers.
  • a preferred embodiment of the method according to the invention for producing a reusable concrete formwork panel provides that the curing of the applied coating composition takes place in a short-cycle press, thereby enabling particularly rapid and, at the same time, particularly high-quality production.
  • the hot press is preferably a short-cycle press and/or not a veneer press.
  • the curing or pressing in the hot press, in particular the short-cycle press preferably takes place without a release layer or release film, thereby simplifying the pressing process and simultaneously making it more economical. can be designed.
  • the application quantity can also be chosen arbitrarily, although an application quantity that is too small will not lead to sufficient reusability of the concrete formwork panel and an application quantity that is too large will lead to reduced stability of the coating and also unnecessarily increases production costs. Accordingly, a preferred embodiment of the method according to the invention provides that the coating composition is applied in an amount of between 100 g/m 2 and 300 g/m 2 , preferably between 150 g/m 2 and 250 g/m 2 , particularly preferably between 200 g/m 2 and 240 g/m 2 , and most preferably of about 220 g/m 2 .
  • the second component of the coating composition does not contain a binder used to produce the chipboard or coarse particle board and/or is not a synthetic resin, and in particular not a melamine resin.
  • at least one release agent component in the second component is specifically used due to its properties as a release agent, and these properties preferably do not arise as a side effect of a surface coating with a synthetic resin layer.
  • thermoplastic synthetic resin such as diphenylmethane diisocyanate (PMDI), methylene diphenyl isocyanate (MDI), also in emulsified form as eMDI, or polyurethane, can be used individually or in a mixture as the carrier resin.
  • PMDI diphenylmethane diisocyanate
  • MDI methylene diphenyl isocyanate
  • eMDI emulsified form as eMDI, or polyurethane
  • the release agent component contains a release agent and in particular a hydrophobizing agent, and most preferably is a hydrophobizing agent.
  • the release agent component can also be a complete coating agent that acts as a release agent or as a release agent component. Additionally or alternatively, it is also preferred that the release agent component hydrophobizes the coating formed from the coating composition, i.e., imparts hydrophobic properties, in particular surface properties, to the coating. Additionally or alternatively, the release agent component can increase the contact angle between the coating and the liquid concrete and/or reduce wettability.
  • the coated concrete formwork panels were then cured in a short-cycle press for 30 seconds at a pressing temperature of 200 °C and a pressing pressure of 50 kg/ cm2 .
  • the concrete formwork panels detached easily from the press plates and could be transported by the infeed/outfeed trolley from the short-cycle press. Furthermore, the use of a separating layer, especially a separating film, was not required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

L'invention concerne un procédé de production d'un panneau de coffrage en béton réutilisable et un panneau de coffrage en béton pour une utilisation répétée dans la coulée de béton. Afin de fournir un procédé de production d'un panneau de coffrage en béton, ainsi qu'un panneau de coffrage en béton lui-même, qui permettent de multiples utilisations et en particulier une fabrication rentable, les panneaux de coffrage en béton étant également appropriés pour couler du béton de parement, selon l'invention : tout d'abord, un panneau d'aggloméré ou un panneau à particules orientées ayant deux côtés supérieurs et des faces latérales est prévu ; puis une composition de revêtement à base d'eau à deux composants sous forme liquide est appliquée sur au moins l'un des côtés supérieurs, un composant de la composition de revêtement comprenant une résine de support thermodurcissable et le second composant comprenant au moins un composant d'agent de libération. Enfin, la composition de revêtement appliquée est durcie dans une presse à chaud pour former un revêtement fermé sur le panneau d'aggloméré ou le panneau à particules orientées.
PCT/EP2025/050349 2024-01-10 2025-01-08 Procédé de fabrication d'un panneau de coffrage en béton réutilisable et panneau de coffrage en béton Pending WO2025149528A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP24151195.5 2024-01-10
EP24151195.5A EP4585319A1 (fr) 2024-01-10 2024-01-10 Procédé de fabrication d'un panneau de coffrage à béton à déploiement multiple ainsi que panneau de coffrage à béton

Publications (1)

Publication Number Publication Date
WO2025149528A1 true WO2025149528A1 (fr) 2025-07-17

Family

ID=89573544

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/050349 Pending WO2025149528A1 (fr) 2024-01-10 2025-01-08 Procédé de fabrication d'un panneau de coffrage en béton réutilisable et panneau de coffrage en béton

Country Status (2)

Country Link
EP (1) EP4585319A1 (fr)
WO (1) WO2025149528A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60190270A (ja) * 1984-03-10 1985-09-27 Kobunshi Giken Kk コンクリ−ト型枠用板の製造方法
JPH03159702A (ja) * 1989-11-20 1991-07-09 Mitsui Toatsu Chem Inc 表面処理合板又はコンクリート型枠合板の製造方法
WO1992013016A1 (fr) * 1991-01-25 1992-08-06 Minnesota Mining And Manufacturing Company Panneau de mise en forme pour le beton, recouvert d'une couche de plastique
KR20070025785A (ko) * 2005-09-05 2007-03-08 신광산업 주식회사 멜라민 수지를 이용한 콘크리트 거푸집 패널 제조방법 및그 제품
EP3480030A1 (fr) * 2017-11-06 2019-05-08 Flooring Technologies Ltd. Procédé de fabrication d'un panneau résistant à l'usure au matériau dérivé du bois et ligne de production correspondante
US20200032074A1 (en) * 2017-03-22 2020-01-30 Wooram Coating Co.,Ltd. Mold coating agent with adjusted acid value having function as concrete releasing agent
WO2020109670A1 (fr) * 2018-11-30 2020-06-04 Metsäliitto Osuuskunta Panneau de coulage de coffrage en béton, procédé de fabrication et d'utilisation associés
EP4129711A1 (fr) * 2021-08-05 2023-02-08 Flooring Industries Limited, SARL Procédé de fabrication d'un produit comprenant une couche de surface décorative
EP4364918A1 (fr) * 2022-11-07 2024-05-08 SWISS KRONO Tec AG Procédé de fabrication d'un panneau de particules ainsi que panneau de particules

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60190270A (ja) * 1984-03-10 1985-09-27 Kobunshi Giken Kk コンクリ−ト型枠用板の製造方法
JPH03159702A (ja) * 1989-11-20 1991-07-09 Mitsui Toatsu Chem Inc 表面処理合板又はコンクリート型枠合板の製造方法
WO1992013016A1 (fr) * 1991-01-25 1992-08-06 Minnesota Mining And Manufacturing Company Panneau de mise en forme pour le beton, recouvert d'une couche de plastique
KR20070025785A (ko) * 2005-09-05 2007-03-08 신광산업 주식회사 멜라민 수지를 이용한 콘크리트 거푸집 패널 제조방법 및그 제품
US20200032074A1 (en) * 2017-03-22 2020-01-30 Wooram Coating Co.,Ltd. Mold coating agent with adjusted acid value having function as concrete releasing agent
EP3480030A1 (fr) * 2017-11-06 2019-05-08 Flooring Technologies Ltd. Procédé de fabrication d'un panneau résistant à l'usure au matériau dérivé du bois et ligne de production correspondante
WO2020109670A1 (fr) * 2018-11-30 2020-06-04 Metsäliitto Osuuskunta Panneau de coulage de coffrage en béton, procédé de fabrication et d'utilisation associés
EP4129711A1 (fr) * 2021-08-05 2023-02-08 Flooring Industries Limited, SARL Procédé de fabrication d'un produit comprenant une couche de surface décorative
EP4364918A1 (fr) * 2022-11-07 2024-05-08 SWISS KRONO Tec AG Procédé de fabrication d'un panneau de particules ainsi que panneau de particules

Also Published As

Publication number Publication date
EP4585319A1 (fr) 2025-07-16

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