NL2010620C2 - Fire-resistant laminate and method for manufacturing a fire-resistant laminate. - Google Patents

Fire-resistant laminate and method for manufacturing a fire-resistant laminate. Download PDF

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Publication number
NL2010620C2
NL2010620C2 NL2010620A NL2010620A NL2010620C2 NL 2010620 C2 NL2010620 C2 NL 2010620C2 NL 2010620 A NL2010620 A NL 2010620A NL 2010620 A NL2010620 A NL 2010620A NL 2010620 C2 NL2010620 C2 NL 2010620C2
Authority
NL
Netherlands
Prior art keywords
fire
resistant
wood
layers
resistant laminate
Prior art date
Application number
NL2010620A
Other languages
Dutch (nl)
Inventor
Rik Laan
Original Assignee
Wwp Woodproducts B V
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 Wwp Woodproducts B V filed Critical Wwp Woodproducts B V
Priority to NL2010620A priority Critical patent/NL2010620C2/en
Application granted granted Critical
Publication of NL2010620C2 publication Critical patent/NL2010620C2/en

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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
    • 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
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • 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
    • B32B13/10—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 wood; of wood particle board
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • 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
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • 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
    • B32B2317/00—Animal or vegetable based
    • B32B2317/02—Cork
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/70—Door leaves
    • E06B2003/7059—Specific frame characteristics
    • E06B2003/7061—Wooden frames
    • E06B2003/7067—Wooden frames of layered construction
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/70—Door leaves
    • E06B2003/7059—Specific frame characteristics
    • E06B2003/7061—Wooden frames
    • E06B2003/7073—Wooden frames with fire retardant measures in frame

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Laminated Bodies (AREA)

Description

FIRE-RESISTANT LAMINATE AND METHOD FOR MANUFACTURING A FIRE-RESISTANT LAMINATE
The invention relates to a fire-resistant laminate.
5 It is an object of the invention to provide a fire- resistant laminate that can be manufactured relatively fast and/or relatively cheap and/or with optionally less Coproduction. It may also be an object of the invention to provide fire-resistant laminate that is relatively stable 10 and/or that has an improved fire resistance and/or that is non toxic or harmful to the environment and living creatures .
This object is met by a fire-resistant laminate comprising a layer of fire-resistant material interposed 15 between two layers of wood comprising material, wherein said layer of fire-resistant material is glued to each layer of wood comprising material over adjacent edges thereof.
Said layer of fire-resistant material is glued with two of its opposing end surfaces to each layer of wood 20 comprising material. Gluing the layer of fire-resistant material to the layers of wood comprising material may take place relatively fast and thereby relatively cheap, without having to cure the fire-resistant material. The applicant has found, that in comparison with the known fire-resistant 25 laminates, less CO2 may be produced during manufacturing said fire-resistant laminate. After gluing said fire-resistant material to said layers of wood comprising material a stable fire-resistant laminate is obtained, which fire-resistant laminate is able provide stability to an object in which it 30 will be included.
The fire-resistant laminate according to the invention may be used to form (part of) any object, in particular any 2 constructional object or element, such as, but not limited thereto : - a frame, such as a door frame, a window frame, a glass panel frame; 5 - a stabilization element, for example of a door; - a beam, for example a supporting beam, a roof beam; - a layer of a beam, and - a panel or plate.
In an embodiment of the fire-resistant laminate 10 according to the invention, said fire-resistant material is a mineral bounded fibre-reinforced material, for example in the form of a plate or strip. In particular, said mineral may be calcium silicate or magnesium. Alternatively, said fire-resistant material may be cork, for example in the form 15 of a plate or strip. Such mineral, in particular calcium silicate or magnesium bounded fibre-reinforced plate or strip like material or cork is not toxic and releases no harmful gasses when burnt. Such a non-toxic fire-resistant material is in particular advantageous in cases where water 20 is used for extinguishing a fire. The water used for extinguishing the fire may comprise parts or pieces of said fire-resistant material and because of it being non-toxic the used water comprising said parts or pieces will not contaminate the soil. In addition, said described fire-25 resistant material is relatively cheap. Said fire-resistant material substantially maintains its shape under influence of heat and is in particular not a "foam material".
Said two layers of wood comprising material are preferably formed as two separate layers of wood comprising 30 material and in particular not from a solid piece of wood comprising material comprising a longitudinal groove in which said fire-resistant material is introduced. Such a configuration according to the invention comprising said two 3 separate layers of wood comprising material that are mutually connected by said fire-resistant material provides a stable fire-resistant laminate. In particular, under influence of heat as occurring under fire said two layers of 5 wood comprising material may bend in a different direction, such that said bending forces substantially erase each other and said fire-resistant laminate remains relatively straight. Said fire-resistant material bents minimally under influence of heat and holds the two layers of wood 10 comprising material together, thereby providing additional stability to said fire-resistant laminate in case of fire. Thus, as a result of said laminate structure comprising separate layers of wood comprising material and at least one layer of fire-resistant material provides a stable fire-15 resistant laminate, in particular under fire. By including more layers of wood comprising material and/or fire-resistant material an even more stable fire-resistant laminate may be obtained.
An even more stable fire-resistant laminate is obtained 20 when the structures of the two layers of wood comprising material are different. As a result of said structures being different said two layers of wood comprising material tend to bent in a different direction under influence of heat, such that said bending forces substantially erase each other 25 and said fire-resistant laminate remains relatively straight, thus providing a stable fire-resistant laminate.
By providing even more layers of wood comprising material, an even more stable fire-resistant laminate may be provided, because all layers may have different structures and 30 therefore different bending properties.
In addition or alternatively the structures of the two layers of wood comprising material may be arranged in different directions. In such an arrangement, even when the 4 structures are substantially the same, a stable fire-resistant laminate is provided that remains relatively straight under fire due to different bending directions of the two layers of wood comprising material that result from 5 the structures being arranged in different directions.
The fire-resistant laminate according to the invention may comprise layers of any type of wood comprising material. In particular any type of hardwood is suitable, since hardwood is relatively stable. However, also softwoods such 10 as firwood or pinewood may be used. Also, wood comprising plates, such as plywood or (medium density) fibreboard, may be used. The structure of the wood comprising material may comprise the grain of the wood, or any other structure of the wood comprising material, for example the structure of 15 the fibres of a fibreboard.
The thickness of the layer of fire-resistant material may be chosen in dependence of the required level of fire resistance. By providing a thicker fire-resistant material a more fire-resistant fire-resistant laminate is obtained. For 20 example, said layer may be between 5 and 25 mm thick.
A plurality of layers of fire-resistant material may be provided, thereby improving the fire resistance of the fire-resistant laminate. Said layers of fire-resistant material may be glued to each other or to additional layers of wood 25 comprising material.
The invention further relates to a method for manufacturing a fire-resistant laminate according to the invention as described above, wherein said method comprises the steps of: 30 (a) providing two layers of wood comprising material; (b) providing a layer of fire-resistant material; and 5 (c) gluing said layer of fire-resistant material to each layer of wood comprising material over adjacent edges thereof in order to form said fire-resistant laminate.
By gluing the two layers of wood comprising material to 5 the layer of fire-resistant material, a stable fire- resistant laminate is manufactured relatively fast and/or cheap.
In order to enhance the stability of the fire-resistant laminate, said method comprises the step, to be performed 10 after step (c), of: (d) compressing said layers in order to strengthen the glue bond therebetween.
Compressing may take place in any suitable type of press machine. For example, said press machine may be, but 15 not limited thereto, a high frequency press machine, a plate press machine or a vacuum press machine. In particular a high frequency press machine is suitable if hardwood is used for the layers of wood comprising material, because hardwood is difficult to compress due to its hardness and such a 20 vacuum press machine has high compressing power, in particular of at least 13 KgF/cm2.
In an embodiment of the method according to the invention said fire-resistant material is a mineral bounded fibre-reinforced material, for example in the form of a 25 plate or strip. In particular, said mineral may be calcium silicate or magnesium. Such a fire-resistant material is described above in more detail.
In another embodiment of the method according to the invention said fire-resistant material is cork, for example 30 in the form of a plate or strip.
In another embodiment of the method according to the invention, said two layers of wood comprising material provided in step (a) are formed as two separate layers.
6
In even another embodiment of the method according to the invention, the structures of the two layers of wood comprising material are different.
In yet even another embodiment of the method according 5 to the invention, steps (a) and (c) are performed such that said two layers of wood comprising material are provided such and glued to said layer of fire-resistant material such that the structures of the two layers of wood comprising material are arranged in different directions.
10 As described above, such two separate layers of wood comprising material, optionally with different structures or different arranged structures, provide a stable fire-resistant laminate.
The invention will now be explained in more detail with 15 reference to figures illustrated in a drawing, wherein: - figure 1 is a schematic view of a door frame comprising a fire-resistant laminate according to a first embodiment the invention; - figure 2 is a cross section of the door frame of 20 figure 1; and - figure 3 is a cross section of a fire-resistant laminate according to a second embodiment of the invention.
Figure 1 shows a fire-resistant door frame 1. Said door frame 1 comprises a two vertical extending fire-resistant 25 laminates or frame elements 2 and a horizontal upper fire-resistant laminate or frame element 3 that are mutually connected to form said door frame 1. In said door frame 1 a door 7 is mounted. Said door frame 1 is connected to a glass panel frame 4 comprising two vertical fire-resistant 30 laminates or glazing beams 5 and two horizontal fire- resistant laminates or glazing beams 6 that are mutually connected to form said glass panel frame 4. In said glass panel frame 4 a glass panel 8 is mounted.
7
As is shown in figure 2, the vertical frame element 2 located on the left of the door frame 1 comprises a longitudinal extending layer of fire-resistant material 9 interposed between two longitudinal extending layers of wood 5 10. Said fire-resistant material 9 is for example a calcium silicate or magnesium bounded fibre-reinforced plate or strip like material. It is noted that instead of wood, said layers 10 may be composed of any wood comprising material, as described above. Said wood layers 10 are separate layers 10 of wood, that are mutually connected with the fire-resistant material 9 to form said frame element 2. The frame element 2 is shaped such that it may accommodate said door 7.
Figure 3 shows a fire-resistant laminate 100, comprising a layer of fire-resistant material 109 interposed 15 between two layers of wood 110. It is noted that instead of wood, said layers 110 may be composed of any wood comprising material, as described above. Said wood layers 110 are separate layers of wood, that are mutually connected with the fire-resistant material 109 to form said laminate 100.
20 Said laminate may be used for manufacturing any object, or a part of any object, for example an constructional element, as is described above.
As is further shown in figure 2, the grains 11 of the wood layers 10 are different. As is further shown in figure 25 3, the grains 111 of the wood layers 110 are arranged in different directions.
The layer of fire-resistant material 9, 109 is glued with its opposing surfaces 13, 113 to surfaces 12, 112 of the wood layers 10, 110. Preferably, said layers 9, 109 and 30 10, 110 are compressed in a press machine after gluing, such that the glue bond there between is enhanced.
It is further noted that the invention is not limited to the above discussed exemplary embodiments but also 8 extends to other variants within the scope of the appended claims .
For example, instead of two layers of wood comprising material and one layer of fire-resistant material any number 5 of layers may be provided, wherein additional layers may improve the stability of the fire-resistant laminates. For example, said fire-resistant laminate may comprise three layers of wood comprising material and two layers of fire-resistant material, which are alternatingly arranged.
10

Claims (15)

1. Brandbestendig laminaat, omvattende een laag brandbestendig materiaal, dat is aangebracht tussen twee 5 lagen van een hout bevattend materiaal, waarbij de laag brandbestendig materiaal is verlijmd aan elke laag hout bevattend materiaal over aangrenzende randen daarvan.1. Fire-resistant laminate, comprising a layer of fire-resistant material, which is applied between two layers of a wood-containing material, the layer of fire-resistant material being glued to each layer of wood-containing material over adjacent edges thereof. 2. Brandbestendig laminaat volgens conclusie 1, waarbij het io brandbestendige materiaal een mineraal gebonden vezelversterkt materiaal is.The fire-resistant laminate of claim 1, wherein the fire-resistant material is a mineral bonded fiber-reinforced material. 3. Brandbestendig laminaat volgens conclusie 2, waarbij het mineraal calciumsilicaat of magnesium is. 15The fire-resistant laminate of claim 2, wherein the mineral is calcium silicate or magnesium. 15 4. Brandbestendig laminaat volgens conclusie 1, waarbij het brandbestendige materiaal kurk is.The fire-resistant laminate of claim 1, wherein the fire-resistant material is cork. 5. Brandbestendig laminaat volgens een der voorgaande 20 conclusies, waarbij de twee lagen hout bevattend materiaal zijn gevormd als twee gescheiden lagen hout bevattend materiaal die onderling zijn verbonden door het brandbestendige materiaal.5. Fire-resistant laminate according to any one of the preceding claims, wherein the two layers of wood-containing material are formed as two separate layers of wood-containing material that are mutually connected by the fire-resistant material. 6. Brandbestendig laminaat volgens conclusie 5, waarbij de structuren van de twee lagen hout bevattend materiaal onderling verschillend zijn.A fire-resistant laminate according to claim 5, wherein the structures of the two layers of wood-containing material are mutually different. 7. Brandbestendig laminaat volgens conclusie 5 of 6, waarbij 30 de structuren van de twee lagen hout bevattend materiaal in verschillende richtingen opgesteld zijn.7. Fire-resistant laminate according to claim 5 or 6, wherein the structures of the two layers of wood-containing material are arranged in different directions. 8. Werkwijze voor het vervaardigen van een brandbestendig laminaat volgens een der conclusies 1-7, welke werkwijze de stappen omvat: (a) het verschaffen van twee lagen hout bevattend 5 materiaal; (b) het verschaffen van een laag brandbestendig materiaal; en (c) het verlijmen van de laag brandbestendig materiaal aan elke laag hout bevattend materiaal over aangrenzende 10 randen daarvan voor het vormen van het brandbestendige laminaat.8. A method for manufacturing a fire-resistant laminate according to any of claims 1-7, which method comprises the steps of: (a) providing two layers of wood-containing material; (b) providing a layer of fire-resistant material; and (c) gluing the layer of fire-resistant material to each layer of wood-containing material over adjacent edges thereof to form the fire-resistant laminate. 9. Werkwijze volgens conclusie 8, omvattende de stap, uit te voeren na stap (c): 15 (d) het samendrukken van de lagen voor het versterken van de lijmverbinding daartussen.9. Method as claimed in claim 8, comprising the step to be performed after step (c): (d) compressing the layers for reinforcing the glue connection between them. 10. Werkwijze volgens conclusie 8 of 9, waarbij het brandbestendige materiaal een mineraal gebonden 20 vezelversterkt materiaal is.10. Method according to claim 8 or 9, wherein the fire-resistant material is a mineral-bonded fiber-reinforced material. 11. Werkwijze volgens conclusie 10, waarbij het mineraal calciumsilicaat of magnesium is.The method of claim 10, wherein the mineral is calcium silicate or magnesium. 12. Werkwijze volgens conclusie 8 of 9, waarbij het brandbestendige materiaal kurk is.The method of claim 8 or 9, wherein the fire-resistant material is cork. 13. Werkwijze volgens een der voorgaande conclusies 8 - 12, waarbij de twee in stap (a) verschafte lagen hout bevattend 30 materiaal zijn gevormd als twee gescheiden lagen.13. A method according to any one of the preceding claims 8 - 12, wherein the two layers of wood-containing material provided in step (a) are formed as two separate layers. 14. Werkwijze volgens conclusie 13, waarbij de structuren van de twee lagen hout bevattend materiaal onderling verschillend zijn.The method of claim 13, wherein the structures of the two layers of wood-containing material are mutually different. 15. Werkwijze volgens conclusie 13 of 14, waarbij de stappen (a) en (c) zodanig worden uitgevoerd, dat de twee lagen hout bevattend materiaal zodanig worden verschaft en verlijmd aan de laag brandwerend materiaal dat de structuren van de twee lagen hout bevattend materiaal in verschillende richtingen ïo opgesteld zijn.Method according to claim 13 or 14, wherein steps (a) and (c) are carried out in such a way that the two layers of wood-containing material are provided and glued to the layer of fire-resistant material such that the structures of the two layers of wood-containing material be arranged in different directions.
NL2010620A 2012-12-21 2013-04-11 Fire-resistant laminate and method for manufacturing a fire-resistant laminate. NL2010620C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2010620A NL2010620C2 (en) 2012-12-21 2013-04-11 Fire-resistant laminate and method for manufacturing a fire-resistant laminate.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NL2010049 2012-12-21
NL2010049 2012-12-21
NL2010620A NL2010620C2 (en) 2012-12-21 2013-04-11 Fire-resistant laminate and method for manufacturing a fire-resistant laminate.
NL2010620 2013-04-11

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NL2010620C2 true NL2010620C2 (en) 2014-06-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU213303U1 (en) * 2022-01-23 2022-09-06 Общество с ограниченной ответственностью "Звукоизоляционные Европейские Технологии" Device for soundproofing the socket of an electrical installation device

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Publication number Priority date Publication date Assignee Title
DE29721870U1 (en) * 1997-09-12 1999-01-21 Schörghuber Spezialtüren GmbH & Co. Betriebs-KG, 84539 Ampfing Enclosure frame using wood-based materials for fire protection doors
DE19844431A1 (en) * 1998-09-28 2000-05-11 Heinz B Mader Multi-layer fire resistant board is in a multi-layer structure with an inner cork layer flanked by clamping layers in a lightweight material which does not distort
WO2006011741A1 (en) * 2004-07-26 2006-02-02 Sikongsa Co., Ltd Curved panel for acoustical shell, method of manufacturing the same, and acoustical shell using the same
WO2007141393A1 (en) * 2006-06-08 2007-12-13 Walki Group Oy Insulation board
EP2210736A1 (en) * 2009-01-27 2010-07-28 Lammhults Möbel AB Table top plate
FR2943699A1 (en) * 2009-03-31 2010-10-01 Vincent Damour Fire resistant sandwiched panel for e.g. doors integrated in fire door assembly, has core sandwiched between weather boards made of wood fibers which is assembled at core using binder by gluing

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Publication number Priority date Publication date Assignee Title
DE29721870U1 (en) * 1997-09-12 1999-01-21 Schörghuber Spezialtüren GmbH & Co. Betriebs-KG, 84539 Ampfing Enclosure frame using wood-based materials for fire protection doors
DE19844431A1 (en) * 1998-09-28 2000-05-11 Heinz B Mader Multi-layer fire resistant board is in a multi-layer structure with an inner cork layer flanked by clamping layers in a lightweight material which does not distort
WO2006011741A1 (en) * 2004-07-26 2006-02-02 Sikongsa Co., Ltd Curved panel for acoustical shell, method of manufacturing the same, and acoustical shell using the same
WO2007141393A1 (en) * 2006-06-08 2007-12-13 Walki Group Oy Insulation board
EP2210736A1 (en) * 2009-01-27 2010-07-28 Lammhults Möbel AB Table top plate
FR2943699A1 (en) * 2009-03-31 2010-10-01 Vincent Damour Fire resistant sandwiched panel for e.g. doors integrated in fire door assembly, has core sandwiched between weather boards made of wood fibers which is assembled at core using binder by gluing

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Title
RIGOLO M ET AL: "BASIC MAGNESIUM CARBONATE FLAME RETARDANTS FOR POLYPROPYLENE", POLYMER ENGINEERING AND SCIENCE, BROOKFIELD CENTER, US, vol. 32, no. 5, 1 March 1992 (1992-03-01), pages 327 - 334, XP000962128 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU213303U1 (en) * 2022-01-23 2022-09-06 Общество с ограниченной ответственностью "Звукоизоляционные Европейские Технологии" Device for soundproofing the socket of an electrical installation device

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