EP1216820A1 - Panneau formé, son procédé de fabrication et son application - Google Patents

Panneau formé, son procédé de fabrication et son application Download PDF

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Publication number
EP1216820A1
EP1216820A1 EP01129256A EP01129256A EP1216820A1 EP 1216820 A1 EP1216820 A1 EP 1216820A1 EP 01129256 A EP01129256 A EP 01129256A EP 01129256 A EP01129256 A EP 01129256A EP 1216820 A1 EP1216820 A1 EP 1216820A1
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EP
European Patent Office
Prior art keywords
layers
flame retardant
core
molded part
layer
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.)
Granted
Application number
EP01129256A
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German (de)
English (en)
Other versions
EP1216820B1 (fr
Inventor
Geer Schuren
Robert Huusken
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.)
Trespa International BV
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Trespa International BV
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Publication date
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Publication of EP1216820A1 publication Critical patent/EP1216820A1/fr
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    • 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
    • B44C5/0461—Ornamental plaques, e.g. decorative panels, decorative veneers used as wall coverings
    • 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
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • E04B1/942—Building elements specially adapted therefor slab-shaped
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24322—Composite web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24364—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] with transparent or protective coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24736—Ornamental design or indicia
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y10T428/24967—Absolute thicknesses specified
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]

Definitions

  • the invention relates to a plate-shaped molding with a core of a number of Core layers, on one or both sides of the core substrate, decoration and Clear layers, the flame retardant being added to the molding, a method its manufacture and its use.
  • Plate-shaped molded part includes both flat plates and molds made in one mold. to understand non-planar molded parts, for example the thickened end edges or over the Seen in format length, have a profile with different thicknesses.
  • Such plates generally consist of a number with thermosetting binders impregnated backing layers, which pass through in a press with increased pressure and temperature Hardening of the binder can be formed into a plate or a molded part.
  • These plates and / or molded parts are used both in interior construction and for outdoor applications and have to meet certain fire standards.
  • the molded parts come in Office, kitchen, bathroom, laboratory equipment, furniture etc., for outdoor use, e.g. B. as Facade cladding for use.
  • flame-retardant additives so-called flame retardants
  • Plate-like molded parts are usually built up in layers and consist of one Core as a substrate, which has several layers and one or both sides with each Substrate layer, a decorative layer and a clear layer is laminated.
  • the decoration or Decorative layers are generally colored, pigmented or printed with a Decoration-containing papers containing ⁇ -cellulose, which are soaked and dried with a low molecular weight melamine resin are designed as a decorative preform.
  • the single decorative layer can contain a second layer on the outside of the Decorative layer is attached and is made from an ⁇ -cellulose-containing paper that with is impregnated with a low molecular weight melamine resin, but is neither printed nor a decor contains. It is a so-called clear layer, which is equipped as a pre-compact is.
  • the decorative and clear layers usually do not contain any flame retardants.
  • the core consists of a number of layers, generally of an ⁇ -cellulose containing Paper (sodium kraft paper) are made by impregnation with a low molecular weight Phenolic resin and subsequent drying are pressed together to form the core. This Layer is usually mixed with a flame retardant.
  • EP-B 0 081 147 describes a decorative building board suitable for outdoor use described, which consists of a pressed core of fibers made of heat-hardened phenol-formaldehyde resin are surrounded and a decorative layer on one or both surfaces of the Has core.
  • the core consists of wood fibers and / or cellulose fibers with a thermosetting phenol-formaldehyde resin are coated in aqueous solution or dispersion.
  • An embodiment of this building board is manufactured in such a way that one or more superimposed, mechanically pre-compacted layers based on wood particles, which are impregnated with the thermosetting phenol-formaldehyde resin to form the Core of the building board are pressed in the heat, whereby the synthetic resin is hardened.
  • Such hot-formed decorative high-pressure laminates are are so-called compact molded parts, the structure of which is either that of compact panels EN 438-1 or ISO 4586 or DIN 16926 corresponds or is similar to such a structure.
  • WO99 / 45061 describes composite materials which consist of a fiber and / or Fabric material that is impregnated and hardened with a resin matrix.
  • the resin matrix is based on an epoxy / anhydride reaction resin with reactive built-in phosphorus compounds flame retardant based on acid derivatives.
  • the flame retardant Composite material also includes fillers, defoamers, flow control agents, adhesion promoters and reaction accelerators commonly used in epoxy resin chemistry, e.g. tertiary amine and / or imidazole and organometallic complexes.
  • the phosphorus content related to the resin matrix is 0.5 to 5% by weight.
  • Such composites are considered as lightweight materials in Vehicle construction for rail vehicles, superstructures of motor vehicles and ship and Aircraft components used.
  • a flame retardant, glass fiber reinforced polyamide resin composition is described, the 10 to 40 wt .-% melamine phosphate, melamine pyrophosphate, especially dimelamine pyrophosphate or melamine polyphosphate and mixtures thereof.
  • More preferred Halogen-free flame retardants that can be contained in the polyamide resin composition Zinc borate, zinc phosphate, melamine sulfate or ammonium polyphosphate.
  • Common additives such as lubricants, dispersants and adhesion promoters can be added, such as Stearates, phosphonates, fatty acid amides or aerosils.
  • Such glass fiber reinforced polyamide resin compositions are particularly suitable for the production of moldings used in electrical or Electronics industry are used.
  • the cores of known plates contain resins from the group of aminoplasts, epoxies, urethanes, Thermosets or mixtures thereof. These resins are generally flame retardants added. Additives or additives containing phosphorus come as flame retardants with phosphorus nitrogen. Other known flame retardants are borates or Hydroxides made of aluminum, zinc, magnesium and halogenated organic compounds.
  • the core consists of a prefabricated preform made of wood and / or cellulose fibers the flame retardant can be added to the binder for the wood or cellulose fibers become. There is also the possibility that the flame retardant directly Wood fibers or the wood flour is added, from which the preforms are formed.
  • Such layers of decoration consist of a cross-linked acrylic, urethane, or epoxy Melamine resin that is modified with acrylic resin and contains fillers and / or dyes. A flame retardant is then added to each of these resins.
  • the object of the invention is to provide the flame resistance of moldings as described above Art to improve so that the effectiveness of the flame retardants contained in the molded parts is increased. This problem is solved in such a way that the distribution of the Flame retardant is inhomogeneous across the thickness of the molded part.
  • the individual layers of the molded part contain quantities of different sizes Flame retardants.
  • the layers contain on the surfaces of the molding larger amounts of flame retardant than the layers of the core. It is expediently the distribution of the flame retardants over the thickness of the molded part symmetrical, the flame retardant content in the core layers lower than in the Is substrate and decoration layers.
  • the flame-retardant layers of the molded part the same flame retardant added.
  • the distribution of the flame retardants is over the thickness of the molding is asymmetrical, with the frontal decorative layer being a larger one Amount of flame retardant as the back decoration layer contains and the core layers a lower amount of flame retardant than either of the two decorative layers exhibit. It is also possible that the individual layers of the molded part are different Flame retardants included.
  • the advantage of the invention is that with smaller amounts of flame retardants compared to a homogeneous distribution of the flame retardants in known moldings same flame retardancy is achieved or that with the same amount of flame retardant how to increase flame retardancy with a homogeneous distribution.
  • a method for producing a plate-shaped molded part is also to be created, which enables an inhomogeneous distribution of the flame retardants in the individual layers over the thickness of the molded part. This is done by inserting a separating layer, a clear layer, a decorative layer and / or a substrate layer, the decorative layer being modified with a quantity m 1 of a flame retardant and the substrate layer with a quantity m 2 2 m 1 of a flame retardant, and a prefabricated core a number of core layers, each core layer being modified with an equal amount of m 3 m m 2 of a flame retardant, and by inserting a further decorative layer and / or a substrate layer, each of which is equipped with a flame retardant, a clear layer and a separating layer into an open one Press and achieved by hot pressing under pressure of all layers in the press, whereby the prefabricated layers are hardened, the resins of the layers melt and the layers are formed into a solid, homogeneous molded part
  • the further decorative layer and / or substrate layer are each equipped with an amount m 1 or m 2 of the flame retardant, with m 3 m m 2 m m 1 .
  • the further decorative layer and / or substrate layer are each modified with an amount m 4 or m 5 of flame retardant, with m 3 m m 5 m m 4 and m 5 m m 2 and m 4 m m 1 .
  • the decoration, substrate and core layers are each coated with the modified the same flame retardant. It is also possible that the decoration, substrate and Core layers are each equipped with a different flame retardant.
  • the advantages of the plate-shaped molded part are that of a quantity distribution of the flame retardant savings of 10 to 25% by weight over the thickness of the plate Flame retardant is achieved without the fire behavior deteriorating or that same amount of flame retardant as with a homogeneous distribution an improved Fire behavior is achieved. Another advantage is that with the same amount of flame retardant many different flame retardant profiles can be obtained across the thickness of the molded part can, since the individual layers of the molded part are variable with different amounts Flame retardants can be equipped.
  • a molded part 1 which consists of a core 5, which is enclosed on each side by a substrate layer 4, a decorative layer 3 and a clear layer 2.
  • the core 5 consists of a so-called pre-compact, that is to say from a press package composed of individual core layers 51, 52, 53,...
  • the rear digit of the reference numbers which denote the core layers correspond to the consecutive numbering of these core layers.
  • the substrate layers 4, 4 serve as barrier layers of the core and can also be omitted in certain exemplary embodiments.
  • the decorative layers 3, 3 preferably consist of a lacquer layer and have a weight per unit area of 10 to 400 g / m 2 , in particular 50 to 250 g / m 2 .
  • the decorative or decorative layers 3, 3 can consist of decorative papers which are coated with melamine. According to the invention, flame-retardant additives, so-called flame retardants, are added to the decorative layers 3, 3, the substrate layers 4, 4 and the core layers 51, 52, 53, ... If the decorative layers 3, 3 are decorative papers impregnated with melamine resin, they generally do not contain any flame retardants.
  • Fig. 1 is schematically the insertion of the different layers in an open press shown, between the lower and upper template 7, 7 inserted the individual layers become.
  • the separating layers 6, 6 are used primarily for gluing the molded part 1 after Prevent completion of the pressing process on the templates 7, 7.
  • the individual layers are placed in the open press as follows: be on the lower template 7 successively the separating layer 6, the rear clear layer 2, the rear decorative layer 3, the substrate layer 4, the core 5, a further substrate layer 4, a frontal layer Decorative layer 3, a frontal clear layer 2 and a separating layer 6 placed. After that the press is closed and the hot pressing takes place under pressure and heat Layers to the molded part 1.
  • the temperature is 120 to 180 ° C and the pressure 60 to 110 bar.
  • the core 5 is formed as a pre-compact (prepeg) from the core layers 51, 52, 53, ... and is for example from layers consisting of wood and / or cellulose fiber particles according to the in of the method described in EP-B 0 081 147. This happens in such a way that several Mechanically pre-compacted layers based on wood and / or Cellulose fiber particles, which with a thermosetting resin from the group of Aminoplasts, epoxy, urethane, thermosets or mixtures thereof are impregnated under Heat application are pressed, whereby the synthetic resin is hardened.
  • pre-compact prepeg
  • the flame retardants will be generally added the flame retardants from the group containing or Phosphorus nitrogen-containing additives, halogen-containing organic compounds and Nitrogen-containing compounds, borates or hydroxides can be selected. Both Borates and hydroxides are those of aluminum, zinc, magnesium.
  • the Flame retardants are selected in particular from the group melamine polyphosphates, melamine pyrophosphates, Ammonium polyphosphates, ammonium (pyro) phosphates, amine (pyro) phosphates, selected.
  • the inorganic flame retardants also include antimony oxide. The largest The phosphorus-containing flame retardants are effective, which is why they are preferred be used.
  • consecutive position numbers 11 to 35 are on the X axis specified that are assigned to the different layers of the molded part.
  • the position numbers 11 to 16 comprise, for example, the frontal decorative layer, the Position number 16 marks the border to the core 5, for example the position numbers 17 to 29 are assigned.
  • the item numbers 30 to 35 concern the back Decorative layer 3 of the molded part 1. Since the core 5 is generally still from a frontal and a rear substrate layer 4, 4 is enclosed, for example Item numbers 17, 18 and 19 or 27, 28 and 29 can be assigned to such substrate layers.
  • the active content of flame retardant in percent by weight is on the Y axis based on the weight of the respective layer.
  • Flame retardants on the Y axis can also contain the active phosphorus or one Halogen of the flame retardant can be applied.
  • the middle of the thickness of the molded part 1 is specified by item number 23.
  • the profiles or the flame retardant distribution are symmetrical with respect to an imaginary line drawn through item number 23 or asymmetrical.
  • the straight line m indicates the position the technique indicated according to which the flame retardant distribution is homogeneous, d. H. all with Flame retardants modified layers an equal amount of flame retardants contain. It can be the same flame retardant, but also act different flame retardants in the layers if it is ensured that the The proportion of phosphorus actively involved in fire protection is the same in all layers.
  • Figure 2 shows three symmetrical profiles a, b, c and flame retardant distribution, respectively have different slopes.
  • Profiles a and b have the steepest flanks, the amount of flame retardant in the two outer positions 11 and 35 16% by weight is and accounts for 4 to 4% by weight in positions 14 to 32.
  • Profile b has similarly steep flanks like profile a, the amount of flame retardant in positions 14 and 32 being 8% by weight and in positions 15 to 31 is 3% by weight.
  • the profile c has flatter flanks than that Profiles a and b, in the outer positions 11 and 35 the amount of flame retardant 10% by weight and in items 19 to 27 the amount of flame retardant is 2% by weight.
  • this will be Ratio of the amount of flame retardant in the center of the core 5 to the decorative layer and / or substrate layer 1: 1.5 to 6, in particular 1: 2.0 to 3.5 selected.
  • the molding 1 according to the invention shows an improved Fire behavior compared to the molded part with homogeneous flame retardant distribution.
  • profiles d, e, f are shown, which have a symmetrical flame retardant distribution reproduce and are flatter than the samples of Figure 2.
  • Profiles d and e show one Similar slope and its edges are steeper than the edges of profile f.
  • the amount of flame retardant in positions 11 and 35 of profile d is 10% by weight and drops in the range from position 12 to 34 to a value just below 6% by weight.
  • the profile e has in positions 13 and 33 an amount of 10 wt .-% flame retardant and in Items 14 to 32 an amount of 5 wt .-% flame retardant.
  • the amount of flame retardant in positions 11 and 35 of the profile f is 10% by weight and in the range of position 17 to 29 4% by weight.
  • Figure 4 shows schematically three profiles g, h, i with asymmetrical flame retardant distribution with respect to an imaginary line through position 23.
  • the amount of flame retardant is 16% by weight or 8% by weight.
  • the area of the Positions 17 to 33 are 4% by weight of the flame retardant.
  • the profile h shows in position 11 contains an amount of 12% by weight of flame retardant and in the area of position 15 to 35 a proportion of the flame retardant of 5 wt .-%.
  • the amount is Flame retardant 10% by weight in position 11 and in the range from position 25 to 353% by weight.
  • the effectiveness of the flame retardancy of molded part 1 depends on the amount used Flame retardant for modifying the various layers of the molded part 1 also from the type of flame retardant. Molded parts need to be used in different areas have different requirements for fire behavior, their physical and mechanical properties are sufficient.
  • the fire behavior is measured according to ISO 5660 (Cone Calorimeter), weather resistance using the Xenon Test 1200, water absorption and swelling in boiling water according to standard EN 438-2 and in water at a Temperature of 23 ° C according to DIN 53495 method 3L and the modulus of elasticity according to DIN 53457 and the flexural strength tested according to ISO 178
  • the flame retardants are selected, for example, from the group melamine polyphosphates, Melamine pyrophosphates, ammonium polyphosphates, ammonium (pyro) phosphates, amine (pyro) phosphates, halogenated organic compounds, borates and hydroxides of aluminum, Zinc, magnesium and antimony oxide selected.
  • they contain phosphorus and phosphorus nitrogen Flame retardant suitable for molded parts, the core of which contains cellulose. Flame retardants based on halogenated organic compounds are only limited weather resistance and are therefore only suitable for interior use and core modification of the molded part. Because of the release of halogens in the event of fire, they are not full environmentally friendly.
  • inorganic flame retardants such as borates and Hydroxides based on aluminum and magnesium are relatively high concentrations required to be effectively flame retardant, which then reduces the mechanical properties and the water absorption of the molded part can be impaired.
  • Preferred flame retardants are generally flame retardants containing phosphorus and phosphorus nitrogen.
  • the decorative layers are used in such a way that for the Decorative layers of highly effective flame retardants such as melamine poly, melamine pyrophosphate or ammonium polyphosphates can be used, which are already at relatively low Temperature are highly flame retardant.
  • less effective flame retardants can then be used are used, such as ammonium (pyro) phosphate, amine (pyro) phosphate, in which the ammonia or amine can be both ionogenic and covalently bound.
  • substrate layers which are barrier layers, can be integrated in the core are, these substrate layers expediently laminating the core on both sides.
  • the test is carried out in accordance with the ISO 5660 standard with an output of 50 kW and over a period of time from 720 s.
  • This test is carried out with settings in accordance with the applicant's regulation TNO 158/89.
  • a sample equipped with flame retardant, is irradiated by xenon lamps for a duration of 3000 hours. This corresponds to an application of about 10 years under natural solar radiation in Western European climates.
  • the light sources are three xenon lamps, each with a power of 4500 W.
  • the light intensity is 90 ⁇ 5 W / m 2 in the wavelength range from 300 to 400 nm.
  • the ambient temperature is 30 ° C, the blackboard temperature 45 ° C ⁇ 3 ° C, the relative humidity 65 ⁇ 5%.
  • the sample is sprayed cyclically with water for 3 minutes, the individual cycle lasting 20 minutes, ie 17 minutes after the start of the cycle, the spraying phase of 3 minutes begins.
  • the water is distilled.
  • the pattern runs on a circular path, along the circumference of which the xenon lamps are positioned 120 ° apart. After the pattern has been rotated, it is turned 180 ° so that the two sides are irradiated in a 50/50 ratio.
  • the conditions that flame retardant modified panels have to meet may include: a. in EP-A 1 167 463 described in detail. It is essential that the Surface properties must not deteriorate due to the flame retardant modification.
  • the modulus of elasticity is calculated.
  • the force exerted when the pattern breaks is the Bending strength can be determined.
  • the following examples show symmetrical and asymmetrical distributions of the Flame retardants, while the comparative examples show a homogeneous distribution of the flame retardants exhibit.
  • the thickness of the molded part is 8 mm and the core consists of layers of kraft paper impregnated with phenolic resin, while a lacquer curable by electron beams forms the decorative layers. Furthermore, the core is enclosed by substrate layers, which serve as flame protection barriers. The different layers are modified with different amounts of flame retardants and the types of flame retardants used in the individual layers also differ.
  • the active content of phosphorus in the individual layers is symmetrical to the middle Core layers that form the center of the part thickness and the distribution of the phosphorus corresponds to an average phosphorus content of 1.4% by weight of phosphorus.
  • the molded part 1 is 8 mm thick and the core consists of wood fibers coated with phenolic resin, while a lacquer curable by means of electron radiation is used for the decorative layers.
  • the individual layers are modified with different amounts of flame retardants and they also contain different types of flame retardants.
  • the distribution of the flame retardants is asymmetrical with respect to the middle core layers.
  • the distribution of the active phosphorus in the flame retardants corresponds to a medium one Phosphorus content of 1.2 wt .-% phosphorus.
  • the molded part 1 is 8 mm thick and consists essentially of layers of wood fibers impregnated with phenolic resin, while a lacquer curable by electron radiation forms the decorative layers.
  • the layers are modified with different amounts of flame retardant and different types of flame retardant.
  • the frontal and the rear decorative layers contain no flame retardant, while the frontal and the rear substrate layers are provided with a relatively high proportion of flame retardant as barrier layers.
  • the distribution of the flame retardants is symmetrical to the middle core layers.
  • the distribution of the active phosphorus corresponds to an average phosphorus content of 1.5% by weight. % Phosphorus, based on the total weight of the molded part 1.
  • the molded part 1 is 8 mm thick and the core consists of layers of kraft paper impregnated with phenolic resin.
  • the decorative layers are decorative papers that are impregnated with melamine resin.
  • the core layers are enclosed by barrier layers.
  • the barrier and core layers are modified with different amounts of flame retardant. The same flame retardant is used for both types of layers.
  • the distribution of the flame retardant is symmetrical, the distribution of the active phosphorus corresponding to an average phosphorus content of 1.6% by weight.
  • the molded part is 8 mm thick and the core consists of kraft paper impregnated with phenolic resin, while lacquer curable with electron radiation is used for the decorative layers.
  • the core is enclosed by substrate layers and the distribution of the flame retardants is homogeneous.
  • the frontal and rear decorative layers are not equipped with a flame retardant.
  • Comparative Examples 1 to 3 have an average phosphorus content of 1.2, 1.8 and 2.4% by weight.
  • the molded part is 8 mm thick and consists of layers in the core, which are wood fibers coated with phenolic resin.
  • a coating curable with electron radiation is used for the decorative layers.
  • the decorative layers are not modified with a flame retardant.
  • the active content of phosphorus corresponds to an average phosphorus content of Comparative Examples 4 to 6 of 1.2, 1.8 and 2.4% by weight of phosphorus.
  • Table 1 shows that example 2 has the same average phosphorus content of 1.2% by weight, like Comparative Examples 1 and 4, has a significantly lower total heat release than the comparative examples and that the ignition of both the Decorative layer and the core in Example 1 takes place much later than in the Comparative Examples 1 and 4.
  • a comparison of Examples 1, 3 and 4 with a medium one Phosphorus content of 1.4, 1.5 and 1.6 wt .-% with Comparative Examples 3 and 6, respectively have a homogeneous average phosphorus content of 2.4% by weight shows that in these Examples of a lower total heat release and a later ignition of the core than in the comparative examples occurs.
  • the advantage of the invention is that the inhomogeneous distribution of the flame retardant in the molded parts with a lower Weight fraction of the flame retardant has the same flame retardancy as a homogeneous one Distribution of the flame retardant with a higher proportion by weight of the flame retardant results.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP01129256A 2000-12-23 2001-12-12 Panneau formé, son procédé de fabrication et son application Expired - Lifetime EP1216820B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10064890A DE10064890A1 (de) 2000-12-23 2000-12-23 Plattenförmiges Formteil, Verfahren zu seiner Herstellung und seine Verwendung
DE10064890 2000-12-23

Publications (2)

Publication Number Publication Date
EP1216820A1 true EP1216820A1 (fr) 2002-06-26
EP1216820B1 EP1216820B1 (fr) 2006-03-29

Family

ID=7668883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01129256A Expired - Lifetime EP1216820B1 (fr) 2000-12-23 2001-12-12 Panneau formé, son procédé de fabrication et son application

Country Status (7)

Country Link
US (1) US6833174B2 (fr)
EP (1) EP1216820B1 (fr)
JP (1) JP2002254572A (fr)
AT (1) ATE321656T1 (fr)
DE (2) DE10064890A1 (fr)
ES (1) ES2260149T3 (fr)
PT (1) PT1216820E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2535473A3 (fr) * 2011-06-16 2013-06-26 IKJ S.a.r.l. Système pare-feu ainsi que porte coupe-feu, élément mural pare-feu et panneau coupe-feu à cet effet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070120101A1 (en) * 2005-11-30 2007-05-31 Thompson Patrick M Jr Wood treatment composition and process
AT16296U1 (de) * 2018-01-18 2019-06-15 Sibu Design Gmbh & Co Kg Dekorative Verkleidungsplatte

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3849368A (en) * 1971-11-15 1974-11-19 Mobil Oil Corp Fire retardant polymers containing thermally stable cyclic phosphonate esters
EP0081147A1 (fr) * 1981-12-04 1983-06-15 Hoechst Aktiengesellschaft Panneau formé décoratif, son procédé de fabrication et son application
WO1996009344A1 (fr) * 1994-09-21 1996-03-28 Dsm Melapur B.V. Composition de resine de polyamide ignifugee renforcee fibres de verre, comportant des produits de reaction d'acide phosphorique et de melamine ou de melem comme agents ignifugeants
WO1999045061A1 (fr) * 1998-03-04 1999-09-10 Siemens Aktiengesellschaft Composite ininflammable sans halogene

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4085247A (en) * 1971-02-11 1978-04-18 Fokker-Vfw B. V. Fire-protecting epoxy resin reinforced with glass fiber
US4345059A (en) * 1981-05-18 1982-08-17 Fmc Corporation Fire retardant epoxy resins containing 3-hydroxyalkylphosphine oxides
US4440944A (en) * 1982-04-19 1984-04-03 Fmc Corporation Fire retardant epoxy resins containing 3-hydroxyalkylphosphine oxides

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3849368A (en) * 1971-11-15 1974-11-19 Mobil Oil Corp Fire retardant polymers containing thermally stable cyclic phosphonate esters
EP0081147A1 (fr) * 1981-12-04 1983-06-15 Hoechst Aktiengesellschaft Panneau formé décoratif, son procédé de fabrication et son application
WO1996009344A1 (fr) * 1994-09-21 1996-03-28 Dsm Melapur B.V. Composition de resine de polyamide ignifugee renforcee fibres de verre, comportant des produits de reaction d'acide phosphorique et de melamine ou de melem comme agents ignifugeants
WO1999045061A1 (fr) * 1998-03-04 1999-09-10 Siemens Aktiengesellschaft Composite ininflammable sans halogene

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2535473A3 (fr) * 2011-06-16 2013-06-26 IKJ S.a.r.l. Système pare-feu ainsi que porte coupe-feu, élément mural pare-feu et panneau coupe-feu à cet effet

Also Published As

Publication number Publication date
US6833174B2 (en) 2004-12-21
DE50109368D1 (de) 2006-05-18
ES2260149T3 (es) 2006-11-01
JP2002254572A (ja) 2002-09-11
EP1216820B1 (fr) 2006-03-29
DE10064890A1 (de) 2002-06-27
ATE321656T1 (de) 2006-04-15
PT1216820E (pt) 2006-07-31
US20020150749A1 (en) 2002-10-17

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