EP2101994A2 - Panneau de parement a base de platre, a face decoree melaminee - Google Patents
Panneau de parement a base de platre, a face decoree melamineeInfo
- Publication number
- EP2101994A2 EP2101994A2 EP07871996A EP07871996A EP2101994A2 EP 2101994 A2 EP2101994 A2 EP 2101994A2 EP 07871996 A EP07871996 A EP 07871996A EP 07871996 A EP07871996 A EP 07871996A EP 2101994 A2 EP2101994 A2 EP 2101994A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- melamine
- sheet
- paper
- resin
- cardboard
- 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.)
- Withdrawn
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
- B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
- B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B13/08—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C5/00—Processes for producing special ornamental bodies
- B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
- B44C5/0469—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/043—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of plaster
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
Definitions
- the present invention relates to a gypsum facing panel having a decorated face.
- a gypsum-based facing board also referred to as a gypsum facing board, is a composite board having a plaster core main layer bonded on each of its large faces to a layer of lesser thickness of cardboard. Such plates are used, for example, to make walls, partitions, ceilings, doublings, etc.
- Such plasterboard panels are, for example, marketed under the trademarks Gyplat, Sheetrock, LAFARGE, Placoplatre or Gyproc.
- it is, for example, necessary to set up a frame based on metal profiles, by fixing on a floor, a ceiling and load-bearing lateral walls, as well as metal profiles. vertical interlocked in the profiles on the floor and ceiling and arranged at regular spacing, then come to screw on the framework of plasterboard, on each side of this frame.
- the space left between the facing plates can be filled with absorbent material such as glass wool or rockwool.
- absorbent material such as glass wool or rockwool.
- a decorative panel comprising a carrier substrate, such as a lignocellulosic material, a metal sheet or a panel of mineral material.
- This substrate is covered with a decorative sheet impregnated with a first noble thermoset resin and covered with a wear surface layer containing a second noble thermoset resin and barium sulfate.
- the manufacture of such a panel decorative requires the implementation of two resin deposition operations, which leads to a relatively complex and expensive manufacturing process.
- such a panel does not have all the guarantees of mechanical and chemical surface resistance to the extent that the wear layer is deposited on the decorative sheet.
- the patent application EP 1022400 describes a composite material comprising a reinforcing layer composed of a thermosetting resin and mineral fibers, positioned on at least one face of an inorganic porous material.
- the composite panel comprises a plasterboard panel associated on each side with a reinforcing layer, itself associated with a decorative layer. The manufacture of such a material requires the assembly of different layers of material leading to a relatively complex and expensive manufacturing process, which does not ensure the achievement of a material with good properties of mechanical and chemical resistance.
- US Patent 3692620 discloses a gypsum board coated with a paper impregnated with a resin assembled under low pressure. Such a method does not make it possible to obtain a panel with good properties of mechanical and chemical surface resistances. Also, the inventor proposes to provide a new plaster-based panel that is already carrying a decor, and that allows to directly realize a wall, wall or ceiling with the desired finish, but which also has improved properties mechanical and chemical surface resistance. The proposed panel must also have a good reaction to fire.
- the present invention relates to a gypsum-based facing panel, in particular intended to be used for the production of walls, partitions or ceilings, comprising a plaster core each of whose large faces is associated with a sheet of plaster.
- carton characterized in that one of the sheets of cardboard is associated with a sheet of paper playing the role of decor for the plasterboard, said sheet of paper being impregnated with a melamine-based resin which provides the connection between the cardboard sheet and the sheet of paper, the melamine-based resin mass per m 2 being in the range of from 60 to 330 g / m 2 .
- the gypsum-based facing panel according to the invention is therefore melamine on one of its large faces.
- the melamine-based resin is a melamine / formaldehyde, melamine / urea / formaldehyde mixture.
- the mass of melamine preferably represents at least 60% of the total mass of melamine-based resin, this percentage being preferably from 90 to 95% in the case of a melamine / formaldehyde resin.
- the panel is obtained by laminating a plaster core, each of the large faces of which is associated with a sheet of cardboard and a sheet of paper, acting as decor for the plasterboard, impregnated a melamine-based resin at a temperature of 155 to 165 ° C for a period of 15 to 30 s.
- the lamination is carried out at a pressure of the order of 15 to 25 Kg / cm 2.
- Another object of the invention is to propose a method of manufacturing plaster-based facing, in particular intended to be used for the production of walls, partitions or ceilings, comprising a plaster core, each of the large faces of which is associated with a sheet of cardboard, one of the sheets of cardboard being associated with a sheet of decorative paper for the plasterboard, said sheet of paper being impregnated with a melamine-based resin whose mass is between 60 and 330 g / m 2 for bonding the cardboard sheet to the paper sheet, the bond between the cardboard sheet and the decor paper sheet being performed by a hot laminating step.
- the lamination is carried out at a temperature of 155 to 165 ° C. for a period of 15 to 30 s.
- the lamination is carried out at a pressure of the order of 15 to 25 kg / cm 2.
- the lamination is preceded by a step of impregnating the decorative function paper in a resin bath melamine-based impregnation agent, preferably comprising a melamine / formaldehyde or melamine / urea / formaldehyde mixture.
- a resin bath melamine-based impregnation agent preferably comprising a melamine / formaldehyde or melamine / urea / formaldehyde mixture.
- the mass of impregnating resin represents from 50 to 70% of the mass of the impregnated paper sheet, function of decoration, obtained before lamination.
- the impregnation step is performed so as to obtain, after impregnation, a mass of melamine-based impregnating resin per m2 of paper with a decorative function, in the range of 65 g / m 2 to 350 g / m 2 , of which, preferably, 4 to 30 g / m 2 consist of volatile materials.
- Figure 1 illustrates a panel according to the invention and Figure 2 an installation for producing a decor paper used for the manufacture of such a panel.
- panel I comprises a first part 1 consisting of a plaster core 2 bonded, on each of its large faces, to a sheet 3i and 3 2 of solid and durable cardboard to form a plate flat and rectangular.
- the nature and characteristics of the cardboard sheets may vary according to the application specific to each type of plate, and the core may include additives that give it additional properties.
- the longitudinal edges are preferably also covered with cardboard and profiled to fit the intended application.
- This first part 1 may be constituted by any type of panel or plate based on plaster, commercially available.
- the panel I comprises a second part, namely, a decorated paper 4 impregnated with a melamine-based resin.
- This decorated paper is intimately related to one of the sheets 3i of cardboard on its opposite side to the core 2 of plaster.
- the melamine paper 4 thus plays the role of surface coating of the cladding panel
- the paper used is most often based on cellulose fibers and mineral fillers. It can be tinted in its mass to obtain a plain decoration, or even printed in a defined pattern, for example to imitate wood, stone, or according to a fantasy pattern.
- the printing of the paper is, for example, carried out according to the gravure printing process.
- any type of melamine paper used in the field of decorative laminates can be implemented.
- the decorative function paper has, for example, a basis weight, from 65 to 150 g / m 2 before its impregnation, preferably between 65 and 100 g / m 2 .
- the impregnation of the paper with a melamine-based resin is carried out at heart.
- the impregnation is carried out so that the mass of resin represents from 50 to 70% of the mass of the impregnated paper obtained after drying and before lamination.
- Such an impregnation rate is that of the decorative papers used in particular in the range of decorative products marketed by Polyrey.
- the impregnation of the decorative paper sheet is, for example, carried out by dipping the decorated paper, in the form of a sheet or a continuous strip of paper, in a melamine resin bath. At the end of the bath, the decorated paper is soaked in the heart with the melamine-based resin.
- the amount of resin which impregnates the decorated paper can be adjusted, according to any technique well known to those skilled in the art, for example by calibration or dosage.
- the melamine-based resin will preferably be a melamine / formaldehyde or melamine / urea / formaldehyde mixture.
- the amounts of the various monomers are adjusted to allow polycondensation of the resin during the subsequent lamination step.
- Melamine is mainly used for its properties of mechanical and chemical resistance of surface and transparency.
- a melamine-formaldehyde resin whose formalin / melamine molar ratio is in the range of 1.5 to 2.5, is used.
- a melamine / urea / formaldehyde mixture makes it possible to reduce the cost of the melamine-based impregnating resin.
- a melamine / urea / formaldehyde resin, the formalin / (melamine + urea) molar ratio is advantageously in the range of 1.5 to 2.5, for example with moles of formaldehyde for 1 mole of melamine and 1 mole urea.
- the amount of urea is preferably limited so that the melamine / urea molar ratio is greater than or equal to 1 because its presence tends to decrease the mechanical strength characteristics (especially to scratching and abrasion). ) and the water resistance.
- the impregnation of the decorated paper sheet is carried out, so as to obtain, after impregnation, a mass of melamine-based impregnating resin, per m 2 of impregnated paper, from 65 g / m 2 to 350 g / m 2 , of which, preferably, about 4 to 30 g / m 2 consist of volatile materials, such as solvent or others.
- volatile materials such as solvent or others.
- the presence of volatile compounds allows the resin to flow well on the surface and subsequently allows good adhesion between the sheet of decor paper impregnated with melamine resin and the sheet of cardboard associated with the plaster core, during the subsequent step the teaming up.
- the amount of volatiles is removed in the subsequent lamination step, for example in press.
- the melamine-based resin (that is to say the resin obtained after lamination and therefore after the removal of the volatiles) is advantageously present on the basis of 60 to 330 g / m 2 .
- the melamine mass preferably represents at least 60% of the total melamine-based resin mass, this percentage being given with reference to the dry, crosslinked resin present on the claimed cladding board, which percentage is preferably from 90 to 95% in the case of a melamine / formaldehyde resin.
- Such a range of values makes it possible to give the sheet of paper decorated with excellent properties of resistance to wear or aggression of chemicals.
- a panel I according to the invention is, for example, illustrated in FIG. 1.
- the combination of the two parts (plaster board 1 and decorated paper 4) is, for example, obtained by lamination carried out in a hot press.
- the heating allows the melamine-based resin to bond between the plaster board and the decorated paper. This bond is facilitated by the creep of the impregnating resin, which is favored by the presence of compounds volatiles in the melamine-based impregnating resin used to impregnate the decor paper.
- the volatile compounds represent 5 to 8%, preferably 6 to 7%, and preferably about 6.5% of the mass of the impregnating resin used to impregnate the decor paper.
- the method used is similar to that used for wood-based melamine-surfaced panels in accordance with the EN 14322 standard, but the temperature and the pressure used must be adapted to the plaster-based facing panel.
- a temperature taken at the heart of the panel I between 155 and 165 ° C applied for a period of between 15 and 30 s.
- the pressure used is advantageously of the order of 15 to 25 kg / cm 2 . This lamination step results in the polycondensation of the melamine-based resin.
- an automated system is preferably implemented, in particular for the routing of the plasterboard and the positioning of the plasterboard. the sheet of melamine paper on the plasterboard.
- the gypsum panel, decorated face according to the invention can be used for any type of arrangement and interior layout, such as partitions and ceilings in buildings.
- the panel according to the invention also has a very good behavior of reaction to fire, and in particular corresponding to the classification B-Sl-DO according to the European standard EN13823: 2002. Furthermore, the facing panel according to the invention obtained hereinafter has a mean higher heating value expressed in MJ / kg sample of 0.9 MJ / kg (NF EN ISO1716). The facing panel according to the invention is therefore perfectly suited to indoor uses in high-rise buildings and obviously for establishments receiving the public. The following preparations illustrate the invention, but have no limiting character.
- a molar ratio of formaldehyde to melamine of 2 is used with ⁇ -caprolactam in molar ratio on melamine of 0.075.
- the total amounts of melamine and ⁇ -caprolactam (from UNIVAR), in solid form, are solubilized in the reaction mixture.
- the The reaction mixture is heated very rapidly to a plateau temperature of 93 ° C +/- 1.
- the dwell time is maintained to obtain a dilutability of 1.3 +/- 0.1 with respect to a volume of resin removed. in the reactor and brought back to 20 ° C.
- Such dilutability is achieved when the addition at 20 0 C of 39 ml of water to 30 ml of resin taken from the reactor and cooled to 20 0 C, causes a sampling disorder.
- the reaction mixture is cooled to 55 ° C. and the following products are added:
- An accelerator is also added just before the impregnation, in order to avoid a too fast evolution of the resin at a rate of 1.5% with respect to the mass of resin as it is in the reactor.
- the accelerator used is a mixture of sulfamic acid triethanolamine and amino-methyl-propanol in a molar ratio 1/1 / 1.24 which has a pH of 8.2 +/- 0.3 at 20 0 C .
- the melamine resin obtained has the following characteristics: a Brookfield viscosity at 25 ° C of 60 m PAS / s +/- 3 the amount of dry matter present in the resin is 52% +/- 2, the measurement is using an apparatus for simultaneously heating and weighing the loss of mass, and thus to determine the loss of volatile matter during the heating time. The heating is carried out at 180 ° C. until the loss of mass is stabilized.
- the impregnation is carried out using the installation illustrated in FIG. 2.
- Such an installation comprises:
- the paper to be impregnated is dipped in a resin bath (tank 10) with a pre-impregnation step. Then, the amount of resin is adjusted by means of the calibrating rolls 11. The paper which has received the desired amount of resin is then dried in a blown hot air dryer 12. Finally, the impregnated paper sheet is cooled using chill rollers 13 and formatted using a rotary type cutter 14.
- the paper speed is set according to the drying capacity of the dryer.
- the adjustment of the resin charge is carried out with the calibrating rollers which, depending on the gap between the upper and lower rollers, make it possible to increase and decrease the amount of resin to be put into the paper sheet.
- the resin content is calculated as follows:
- the impregnation is carried out on a decor paper of 80 g / m 2 before impregnation which is loaded at a resin content of 55% relative to the weight of the decor paper leaving the impregnator and before lamination.
- the impregnated sheet has a basis weight of 178 g / m 2 , with a resin mass of 98 g / m 2, of which 6.5% (representing 6.37 g / m 2 ) of this mass corresponds to volatile compounds to ensure surface creep, necessary to obtain good adhesion to the plasterboard support.
- a heated plate press For lamination, a heated plate press is used, with the following parameters:
- Temperature of the heating plates (lower and upper) equal to 186 ° C allowing to obtain in the heart of the panel, a temperature comprised between 155 and 165 °.
- the cladding panel obtained has the characteristics presented in TABLE 1 below:
- ** this value corresponds to the total value of the plate which is well below 21M_J / m2 upper limit value for use in high-rise buildings
- NF P72-302 plasterboard - definition, requirements and tests
- NF EN 14323 wood-based panels - melamine faced panels for indoor use - part 2: test methods
- NF EN 13823 Reaction to fire tests of building products - construction products exposed to thermal stress caused by an insulated fire object
- EN ISO 1716 Reaction to fire tests of construction products - Determination of heat of combustion.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Laminated Bodies (AREA)
- Panels For Use In Building Construction (AREA)
- Finishing Walls (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0655897A FR2910508B1 (fr) | 2006-12-22 | 2006-12-22 | Panneau de parement a base de platre, a face decoree melaminee |
PCT/FR2007/052585 WO2008087336A2 (fr) | 2006-12-22 | 2007-12-20 | Panneau de parement a base de platre, a face decoree melaminee |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2101994A2 true EP2101994A2 (fr) | 2009-09-23 |
Family
ID=38255287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07871996A Withdrawn EP2101994A2 (fr) | 2006-12-22 | 2007-12-20 | Panneau de parement a base de platre, a face decoree melaminee |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2101994A2 (fr) |
FR (1) | FR2910508B1 (fr) |
WO (1) | WO2008087336A2 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2939351B1 (fr) * | 2008-12-09 | 2013-03-01 | Lafarge Platres | Usinage de plaques de platre comprenant un revetement decoratif |
FR2939352B1 (fr) * | 2008-12-09 | 2013-02-22 | Lafarge Platres | Perforation de plaques de platre comprenant un revetement decoratif |
PT108406A (pt) * | 2015-04-27 | 2016-10-27 | Categoria & Rigor - Unipessoal Lda | Placa cartonada estratificada para construção de tabiques |
CN115142628A (zh) * | 2022-07-18 | 2022-10-04 | 浙江亚厦装饰股份有限公司 | 一种墙板及其生产工艺 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3692620A (en) * | 1967-10-23 | 1972-09-19 | Ashland Oil Inc | Laminated gypsum board |
GB1433464A (en) * | 1974-03-05 | 1976-04-28 | Formica Int | Production of decorative faced panels |
AU524574B2 (en) * | 1978-09-22 | 1982-09-23 | Formica International Limited | Decorative laminate |
JP2883989B2 (ja) * | 1990-01-22 | 1999-04-19 | 大日本印刷株式会社 | 化粧材の製造方法 |
WO1999016984A1 (fr) * | 1997-09-26 | 1999-04-08 | Ibiden Co., Ltd. | Materiau de construction refractaire composite, son procede fabrication, plaque de platre et composition resineuse |
-
2006
- 2006-12-22 FR FR0655897A patent/FR2910508B1/fr active Active
-
2007
- 2007-12-20 WO PCT/FR2007/052585 patent/WO2008087336A2/fr active Application Filing
- 2007-12-20 EP EP07871996A patent/EP2101994A2/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2008087336A3 * |
Also Published As
Publication number | Publication date |
---|---|
FR2910508A1 (fr) | 2008-06-27 |
WO2008087336A2 (fr) | 2008-07-24 |
WO2008087336A3 (fr) | 2009-03-26 |
FR2910508B1 (fr) | 2012-01-27 |
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