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WO2014149005A1 - A wood-based shuttering panel with improved surface protection and its manufacturing process - Google Patents

A wood-based shuttering panel with improved surface protection and its manufacturing process Download PDF

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Publication number
WO2014149005A1
WO2014149005A1 PCT/SI2013/000071 SI2013000071W WO2014149005A1 WO 2014149005 A1 WO2014149005 A1 WO 2014149005A1 SI 2013000071 W SI2013000071 W SI 2013000071W WO 2014149005 A1 WO2014149005 A1 WO 2014149005A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel
fibreglass
wood
threaded
surface protection
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/SI2013/000071
Other languages
French (fr)
Inventor
Renata ČESNIK
Zoran GUŠTIN
Peter TOMAŽINČIČ
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.)
Intech-Les Razvojni Center d o o
Original Assignee
Intech-Les Razvojni Center d o o
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 Intech-Les Razvojni Center d o o filed Critical Intech-Les Razvojni Center d o o
Publication of WO2014149005A1 publication Critical patent/WO2014149005A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/10—Next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/042—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/10—Coating
    • C03C25/24—Coatings containing organic materials
    • C03C25/26—Macromolecular compounds or prepolymers
    • C03C25/32—Macromolecular compounds or prepolymers obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • C03C25/34—Condensation polymers of aldehydes, e.g. with phenols, ureas, melamines, amides or amines
    • 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
    • E04G9/05—Forming boards or similar elements the form surface being of plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4026—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00—Buildings or parts thereof

Definitions

  • the invention refers to a three-ply wood-based shuttering panel (hereinafter generally designated as "shuttering panel") used for the manufacture of concrete constructions with a new, improved surface protection providing increased impact resistance and wear-and-tear resistance and its manufacturing process.
  • shuttering panel used for the manufacture of concrete constructions with a new, improved surface protection providing increased impact resistance and wear-and-tear resistance and its manufacturing process.
  • the invention falls within the branch of construction, i.e. formwork equipment.
  • shuttering panels When used, shuttering panels are subject to mechanical stress; furthermore, their surface is exposed to chemicals from concrete and also to weather conditions.
  • the surface areas of a regular shuttering panel are protected only with melamine urea-formaldehyde resin, which is hot pressed, catalysed and pigmented.
  • the resin is applied in a thin layer, in the normal amount of 100 grams per m 2 of the surface.
  • Hardened catalysed melamine urea- formaldehyde resins are brittle, as they can crack, wear out and fail to protect the tender wooden surface, consequently causing a shuttering board to wear down faster and reduce its durability. It was therefore necessary to improve the surface protection quality of a regular shuttering panel.
  • a shuttering panel with improved surface protection is a regular, i.e. wooden shuttering panel with the surface area, protected with fibreglass threads, which are impregnated with amino resins, thus causing increased impact resistance and wear-and-tear resistance.
  • a regular shuttering panel is used in construction in order to make concrete casting formwork.
  • a regular shuttering panel is made of three cross-laminated grained wood layers of coniferous wood or softwood, mostly from spruce and fir.
  • the outer layers are made of wooden laths glued together along the longitudinal direction, i.e. the direction of a longer side of a panel.
  • a middle layer is made of transversally placed laths, i.e. in the direction of a shorter side of a panel; these laths are framed with longitudinal finishing laths.
  • the layers are glued with water-proof adhesive. According to the state of the art the surface of a regular shuttering panel is protected with catalysed melamine urea-formaldehyde resin with added pigments, following hot-pressing process; the angles are protected with acrylic-based colour coatings.
  • a shuttering panel In the process of concreting, a shuttering panel is subject to considerable mechanical and chemical stress, including moisture and concrete abrasion when pouring concrete into a formwork construction; after usage, it is also exposed to the abrasion of concrete remains on the surface, which are cleaned mechanically, usually by brushing and/or scraping.
  • threaded fibreglass i.e. the GFK matrix
  • OSB chipboards and oriented strand boards
  • a new shuttering panel has been developed; it is made of softwood with increased surface protection, whereby the surface is treated in such a way that the defects and damage even after multiple usages are avoided.
  • the manufacturing process was also developed.
  • the said technical problem is solved by using a regular shuttering panel with improved surface protection, having threaded fibreglass, impregnated with amino resins and hot-pressed with catalysed liquid melamine urea-formaldehyde resin.
  • This surface protection - with threaded fibreglass impregnated with amino resins - may be pigmented.
  • the manufacturing process of a shuttering panel with improved surface protection is technologically simpler and follows the operating sequences described below:
  • the manufacturing process of a shuttering panel with improved surface protection differs from the currently used manufacturing process of a regular shuttering panel in the following ways: puttying, i.e. correcting smaller surface defects is no longer necessary, as the pigmented, threaded fibreglass, impregnated with amino resin, covers the surface irregularities; moreover, all the working operations, related to the preparation and application of a current surface protection with hardened, catalysed melamine urea- formaldehyde resin, are now no longer necessary; this includes the preparation of pigmented melamine resin by applying dusty or liquid pigments into a liquid melamine resin; roller spreading of liquid catalysed melamine resin with added pigments; drying the applied coating of liquid catalysed melamine resin with added pigments in a drying canal.
  • a crucial part of the manufacturing process of a shuttering panel with improved surface protection begins after the assembly of both of the outer layers and intermediate sawn laths prior to pressing in a hydraulic, multi-set, hot-water heating press.
  • the three-layered wood-based panel consisting of two outer layers and a middle layer, runs through a roller spreading of a liquid catalysed melamine urea-formaldehyde resin, whereby both of the outer surface areas are simultaneously coated with pigmented threaded fibreglass, impregnated with amino resins.
  • Further manufacturing process remains the same as in the case of previously described regular shuttering panel, i.e. pressing in a hydraulic, multi-set, hot-water heating press at 123 °C, with an 8-minute pressing time and a specific pressure of 8 MPa.
  • the outer surface areas of a shuttering panel with improved surface protection may come in different colours.
  • the colour is defined by pigments in threaded fibreglass, impregnated with amino resins.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

The invention refers to a wood-based shuttering panel used for the manufacture of concrete constructions with a new, improved surface protection providing increased impact resistance and wear-and-tear resistance of the panel and its manufacturing process. The invention falls within the branch of construction equipment. A shuttering panel with improved surface protection consists of a regular shuttering panel having its surface reinforced with pigmented threaded fibreglass, impregnated with amino resins, placed on the surface immediately after applying a liquid catalysed melamine urea-formaldehyde resin, serving as an adhesive for threaded fibreglass.

Description

A WOOD-BASED SHUTTERING PANEL WITH IMPROVED SURFACE PROTECTION AND ITS MANUFACTURING PROCESS
Field of the invention
The invention refers to a three-ply wood-based shuttering panel (hereinafter generally designated as "shuttering panel") used for the manufacture of concrete constructions with a new, improved surface protection providing increased impact resistance and wear-and-tear resistance and its manufacturing process. The invention falls within the branch of construction, i.e. formwork equipment.
Technical problem
When used, shuttering panels are subject to mechanical stress; furthermore, their surface is exposed to chemicals from concrete and also to weather conditions. The surface areas of a regular shuttering panel are protected only with melamine urea-formaldehyde resin, which is hot pressed, catalysed and pigmented. The resin is applied in a thin layer, in the normal amount of 100 grams per m2 of the surface. Hardened catalysed melamine urea- formaldehyde resins are brittle, as they can crack, wear out and fail to protect the tender wooden surface, consequently causing a shuttering board to wear down faster and reduce its durability. It was therefore necessary to improve the surface protection quality of a regular shuttering panel.
According to this invention, a shuttering panel with improved surface protection is a regular, i.e. wooden shuttering panel with the surface area, protected with fibreglass threads, which are impregnated with amino resins, thus causing increased impact resistance and wear-and-tear resistance.
State of the art
A regular shuttering panel is used in construction in order to make concrete casting formwork. A regular shuttering panel is made of three cross-laminated grained wood layers of coniferous wood or softwood, mostly from spruce and fir. The outer layers are made of wooden laths glued together along the longitudinal direction, i.e. the direction of a longer side of a panel. A middle layer is made of transversally placed laths, i.e. in the direction of a shorter side of a panel; these laths are framed with longitudinal finishing laths. The layers are glued with water-proof adhesive. According to the state of the art the surface of a regular shuttering panel is protected with catalysed melamine urea-formaldehyde resin with added pigments, following hot-pressing process; the angles are protected with acrylic-based colour coatings.
The process of manufacturing a regular shuttering panel, having its surface protected with catalysed melamine urea-formaldehyde resin, follows the below mentioned operating sequences:
- gluing of sawn wooden laths over the entire width into the sheet to form the outer layer of a regular shuttering panel;
- thickness calibration of the glued sheet
- making repairs on the glued and calibrated sheet by patching, whereby the knot or defect is mechanically drilled and a healthy piece of wood is placed into the previously drilled spot;
- puttying of the glued and calibrated sheet, where the cracks are filled with wood dust in a proper binding substance;
- preparation of the mixture of the pigmented melamine urea-formaldehyde resin by applying dusty or liquid pigments into a liquid melamine resin;
- roller spreading of liquid catalysed melamine urea-formaldehyde resin with added pigments on both sides of preliminary made outer sheets, according to the said process;
- drying the applied coating of liquid catalysed melamine urea- formaldehyde resin with added pigments on both sides of preliminary made outer sheets according to said process in a drying canal by applying increased temperature and blowing hot-air with ventilators;
- cutting the sheet along the thickness into two mirror-symmetric parts by using a band saw in order to get both of the outer layers of a regular shuttering panel;
- roller spreading of liquid catalysed melamine urea- formaldehyde resin on both parts of the cut sheet as a binding substance for middle layer;
- assembling both outer layers and intermediate laths in a cross rectangular composition, whereby the middle layer incorporates finishing framing laths
- pressing all three layers into a panel in a hydraulic, multi-set, hot-water heating press under specific parameters of increased temperature and pressure; - trimming the compressed three-layered panel to its final dimension and adding acryl protection along its longitudinal and transverse edges.
In the process of concreting, a shuttering panel is subject to considerable mechanical and chemical stress, including moisture and concrete abrasion when pouring concrete into a formwork construction; after usage, it is also exposed to the abrasion of concrete remains on the surface, which are cleaned mechanically, usually by brushing and/or scraping.
The commonly used hardened catalysed melamine urea-formaldehyde resins, which are the only surface protection of shuttering panels, are brittle. When used constantly, the protection cracks and wears out, leaving wood surface vulnerable and unprotected. Eventually, the panel wears out more quickly and its durability is reduced.
The use of threaded fibreglass, i.e. the GFK matrix, is generally widespread in the plastics and composites industry, and it was also used on chipboards and oriented strand boards (OSB); it is also used to reinforce thin sheets. Consequently, bending strength has been improved and impact resistance has been increased. Improvement of the surface with threaded fibreglass, i.e. GFK matrix has not yet been tested on a regular shuttering panel.
In order to avoid the above mentioned disadvantages, a new shuttering panel has been developed; it is made of softwood with increased surface protection, whereby the surface is treated in such a way that the defects and damage even after multiple usages are avoided. The manufacturing process was also developed.
Description of the invention
The said technical problem is solved by using a regular shuttering panel with improved surface protection, having threaded fibreglass, impregnated with amino resins and hot-pressed with catalysed liquid melamine urea-formaldehyde resin. This surface protection - with threaded fibreglass impregnated with amino resins - may be pigmented. According to this invention, the manufacturing process of a shuttering panel with improved surface protection is technologically simpler and follows the operating sequences described below:
- gluing of sawn wooden laths over the entire width into the sheet to form the outer layer of a shuttering panel,
- thickness calibration of the glued sheet
- making repairs on the glued and calibrated sheet by patching, whereby the knot or defect is mechanically drilled and a healthy piece of wood is placed into the previously drilled spot
- cutting the sheet along its thickness into two mirror-symmetric parts by using a band saw in order to get both of the outer layers of a shuttering panel with surface protection,
- roller spreading of liquid catalysed melamine urea- formaldehyde resin on both parts of the sheet as a binding substance for middle layer,
- assembling both outer layers and intermediate laths in a cross rectangular composition, whereby the middle layer incorporates finishing framing laths
- roller spreading of liquid catalysed melamine urea-formaldehyde resin on both outer sides of a three-layered composition and simultaneous coating of outer surface areas of said composition with pigmented threaded fibreglass, impregnated with amino resins,
- pressing all three-layers together with surface protection into a panel in a hydraulic, multiset, hot-water heating press under specific parameters of increased temperature and pressure,
- trimming the compressed three-layered panel with surface protection to its final dimension and adding acryl protection along its longitudinal and transverse edges.
The manufacturing process of a shuttering panel with improved surface protection according to the said invention differs from the currently used manufacturing process of a regular shuttering panel in the following ways: puttying, i.e. correcting smaller surface defects is no longer necessary, as the pigmented, threaded fibreglass, impregnated with amino resin, covers the surface irregularities; moreover, all the working operations, related to the preparation and application of a current surface protection with hardened, catalysed melamine urea- formaldehyde resin, are now no longer necessary; this includes the preparation of pigmented melamine resin by applying dusty or liquid pigments into a liquid melamine resin; roller spreading of liquid catalysed melamine resin with added pigments; drying the applied coating of liquid catalysed melamine resin with added pigments in a drying canal.
According to the invention a crucial part of the manufacturing process of a shuttering panel with improved surface protection begins after the assembly of both of the outer layers and intermediate sawn laths prior to pressing in a hydraulic, multi-set, hot-water heating press. The three-layered wood-based panel, consisting of two outer layers and a middle layer, runs through a roller spreading of a liquid catalysed melamine urea-formaldehyde resin, whereby both of the outer surface areas are simultaneously coated with pigmented threaded fibreglass, impregnated with amino resins. Further manufacturing process remains the same as in the case of previously described regular shuttering panel, i.e. pressing in a hydraulic, multi-set, hot-water heating press at 123 °C, with an 8-minute pressing time and a specific pressure of 8 MPa.
In order to cover outer surface areas with pigmented threaded fibreglass, impregnated with amino resins, currently used processes may be used, along with the devices for sheet-laying and paper-laying, common in wood industry. The feeding speed at coating is 20 to 30 m/min, the amount of a liquid catalysed melamine urea- formaldehyde resin is 100 to 250 g/m2, planar weight of threaded fibreglass, impregnated with amino resin is 150 to 300 g/m without residual moisture. The application quantity of a liquid catalysed melamine urea- formaldehyde resin co-depends on planar weight of the threaded fibreglass. The most adequate is the threaded fibreglass because of its favourable mechanical properties and abrasion-resistance. A particularly favourable choice would be a GFK matrix EW 160 LT as threaded fibreglass.
According to this invention, the outer surface areas of a shuttering panel with improved surface protection may come in different colours. The colour is defined by pigments in threaded fibreglass, impregnated with amino resins.

Claims

1. A wood-based shuttering panel with improved surface protection which is made of three, cross-laminated grained wood layers of coniferous wood, whereby the outer layers are made of wooden laths glued together along the longitudinal direction, i.e. the direction of a longer side of a panel and middle layer is made of transversally placed laths, i.e. in the direction of a shorter side of a panel, and are framed with longitudinal finishing laths, whereby the layers are glued together with water-proof adhesive, characterized in that both outer surface areas of a panel are coated with catalysed melamine urea-formaldehyde resin and simultaneously with a threaded fibreglass layer, whereby the amount of a liquid catalysed melamine urea formaldehyde resin per individual outer surface is 100 to 250 g/m2 and planar weight of threaded fibreglass impregnated with amino resins without residual moisture-is from 150 to 300 g/m2.
2. The manufacturing process of a wood-based shuttering panel with improved surface protection, characterized in that a roller spreading of a liquid catalysed melamine urea- formaldehyde resin on both of the outer sides of a three-layer composition runs simultaneously with coating of both of the outer surface areas of said composition with pigmented threaded fibreglass, impregnated with amino resins; this is followed by pressing in a hydraulic multi-set, hot-water heating press and trimming thus compressed three-layered panel with improved surface protection to its final dimension and adding acryl protection along -longitudinal and transverse edges of the panel.
3. The process according to claim 1 , characterized in that a liquid catalysed melamine urea- formaldehyde resin is applied in the amount of 100 to 250 g/m .
4. The process according to previous claims, characterized in that the planar weight of the threaded fibreglass, impregnated with amino resins with no residual moisture is from 150 to 300 g/m2.
5. The process according to previous claims, characterized in that pressing is performed in a hydraulic, multi-set, hot- water press at 123 °C, with an 8-minute pressing time and a specific pressure of 8 MPa.
PCT/SI2013/000071 2013-03-19 2013-11-18 A wood-based shuttering panel with improved surface protection and its manufacturing process Ceased WO2014149005A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SIP-201300067 2013-03-19
SI201300067A SI24324A (en) 2013-03-19 2013-03-19 Wooden panelling boards with improve surface protection and process of its manufacturing

Publications (1)

Publication Number Publication Date
WO2014149005A1 true WO2014149005A1 (en) 2014-09-25

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB943630A (en) * 1900-01-01
GB1446036A (en) * 1972-09-04 1976-08-11 Bruynzeel Fineerfabriek Bv Shutting amterial and a method of manufacturing such a material
EP0142906A1 (en) * 1983-08-25 1985-05-29 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Composite materials
WO1986002122A1 (en) * 1984-10-08 1986-04-10 Hammarberg, Lars Shuttering panel and a method of manufacturing it
CN101498171A (en) * 2009-02-24 2009-08-05 南京工业大学 High-strength plywood for building template panels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB943630A (en) * 1900-01-01
GB1446036A (en) * 1972-09-04 1976-08-11 Bruynzeel Fineerfabriek Bv Shutting amterial and a method of manufacturing such a material
EP0142906A1 (en) * 1983-08-25 1985-05-29 The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Composite materials
WO1986002122A1 (en) * 1984-10-08 1986-04-10 Hammarberg, Lars Shuttering panel and a method of manufacturing it
CN101498171A (en) * 2009-02-24 2009-08-05 南京工业大学 High-strength plywood for building template panels

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Publication number Publication date
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