U.S. patent application number 12/685709 was filed with the patent office on 2010-07-15 for mineral-coated textile surfaces for wood materials.
Invention is credited to Klaus Friedrich Gleich, Michael Ketzer.
Application Number | 20100178822 12/685709 |
Document ID | / |
Family ID | 42061147 |
Filed Date | 2010-07-15 |
United States Patent
Application |
20100178822 |
Kind Code |
A1 |
Ketzer; Michael ; et
al. |
July 15, 2010 |
Mineral-coated textile surfaces for wood materials
Abstract
The present invention relates to a composite material consisting
of a wood material base support and a textile surface which is
applied by means of adhesives and provided with a mineral coating.
The composite material according to the invention acts as a
substitute for conventional wood material boards in the
construction field, which are covered with plasterboard.
Inventors: |
Ketzer; Michael;
(Collenberg, DE) ; Gleich; Klaus Friedrich;
(Highlands Ranch, CO) |
Correspondence
Address: |
JOHNS MANVILLE
10100 WEST UTE AVENUE, PO BOX 625005
LITTLETON
CO
80162-5005
US
|
Family ID: |
42061147 |
Appl. No.: |
12/685709 |
Filed: |
January 12, 2010 |
Current U.S.
Class: |
442/1 ; 156/71;
442/181; 442/304; 442/334; 442/401; 442/413; 52/309.16 |
Current CPC
Class: |
E04C 2/26 20130101; B32B
21/14 20130101; B32B 2307/718 20130101; B32B 13/10 20130101; Y10T
442/695 20150401; B32B 2307/724 20130101; B32B 17/067 20130101;
B32B 17/02 20130101; B32B 21/02 20130101; B32B 2262/101 20130101;
Y10T 442/608 20150401; B32B 2262/062 20130101; B32B 21/10 20130101;
Y10T 442/40 20150401; Y10T 442/30 20150401; Y10T 442/681 20150401;
B32B 5/022 20130101; B32B 7/12 20130101; B32B 2262/105 20130101;
B32B 2419/00 20130101; B32B 2262/02 20130101; Y10T 442/10 20150401;
B32B 13/14 20130101 |
Class at
Publication: |
442/1 ; 442/181;
442/304; 442/413; 442/334; 442/401; 156/71; 52/309.16 |
International
Class: |
D03D 9/00 20060101
D03D009/00; D03D 25/00 20060101 D03D025/00; B32B 21/10 20060101
B32B021/10; D04H 13/00 20060101 D04H013/00; D04H 3/16 20060101
D04H003/16; E04F 13/00 20060101 E04F013/00; E04C 2/24 20060101
E04C002/24 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 14, 2009 |
DE |
10 2009 004 970.3 |
Claims
1. A composite material, comprising: a) at least one wood material
support, b) at least one textile fabric which is applied to at
least one of the two sides of the wood material support,
characterised in that the textile fabric has at least one mineral
coating, and an adhesive layer is present between the wood material
support and the textile fabric.
2. The composite material according to claim 1, characterised in
that the mineral coating and/or the adhesive layer contains further
functional materials.
3. The composite material according to claim 1, characterised in
that the wood material base support is wood materials, preferably
boards, with it being possible for these to have additional wood
material structures such as frames, grids or three-dimensional
reinforcement structures.
4. The composite material according to claim 1, characterised in
that the wood material base support is plate- or thread-shaped wood
materials which are produced by mixing the different wood particle
shapes with natural and/or synthetic binders in the course of a hot
pressing process.
5. The composite material according to claim 4, characterised in
that the wood material is plywood or laminated wood, woodchip
material, in particular chipboards and OSB (oriented strand
boards), wood fibre material, in particular porous wood
fibreboards, vapour-permeable wood fibreboards, hard (high-density)
wood fibreboards (HDF) and medium-density wood fibreboards (MDF),
and a material consisting of lignin and other wood constituents,
which can be processed thermoplastically.
6. The composite material according to claim 1, characterised in
that the textile fabric is a woven, scrim, knitted fabric, mesh
and/or nonwoven fabric, preferably a nonwoven fabric.
7. The composite material according to claim 1, characterised in
that the textile fabric is made up of fibres consisting of
synthetic polymers, ceramic fibres, mineral fibres or glass fibres,
with these also comprising mixtures of the above-mentioned
fibres.
8. The composite material according to claim 7, characterised in
that the textile fabric additionally contains cellulose or natural
fibres.
9. The composite material according to claim 1, characterised in
that the textile fabric is formed from mineral and/or ceramic
fibres, preferably from aluminosilicate, ceramic, dolomite,
wollastonite fibres, or from fibres of vulcanites, preferably
basalt, diabase and/or melaphyre fibres, in particular basalt
fibres.
10. The composite material according to claim 1, characterised in
that the textile fabric is a mineral fibre nonwoven, preferably a
nonwoven in which the average length of the mineral fibres is
between 5 and 120 mm.
11. The composite material according to claim 10, characterised in
that the average fibre diameter of the mineral fibres is between 5
and 30 .mu.m, preferably between 8 and 24 .mu.m, particularly
preferably between 8 and 16 .mu.m.
12. The composite material according to claim 10, characterised in
that the weight per unit area of the textile fabric consisting of
mineral fibres is between 15 and 500 g/m.sup.2, preferably between
40 and 250 g/m.sup.2, with this data referring to a surface fabric
without a mineral coating.
13. The composite material according to claim 1, characterised in
that the textile fabric is a glass fibre nonwoven, preferably a
nonwoven in which the average length of the glass fibres is between
5 and 120 mm.
14. The composite material according to claim 13, characterised in
that the average diameter of the glass fibres is between 5 and 30
.mu.m, preferably between 8 and 24 .mu.m, particularly preferably
between 10 and 21 .mu.m.
15. The composite material according to claim 13, characterised in
that the average diameter of the glass fibres is between 0.1 and 5
.mu.m.
16. The composite material according to claim 13, characterised in
that the glass fibre nonwoven is built up in a multi-layer manner,
and the different layers have different glass fibre diameters,
defined in claim 14 or claims 14 and 15.
17. The composite material according to claim 1, characterised in
that the textile fabric comprises glass fibres, preferably a glass
fibre nonwoven, and the weight per unit area is between 15 and 500
g/m.sup.2, preferably between 40 and 250 g/m.sup.2, with this data
referring to a surface fabric without a mineral coating.
18. The composite material according to claim 1, characterised in
that the textile fabric comprises fibres consisting of synthetic
polymers.
19. The composite material according to claim 18, characterised in
that the textile fabric is a nonwoven, in particular a spunbonded
nonwoven.
20. The composite material according to claim 19, characterised in
that the nonwoven is a staple fibre nonwoven, the staple fibres of
which have a length of from 1 to 100 mm, preferably from 2 to 50
mm, particularly preferably from 2 to 30 mm.
21. The composite material according to claim 1, characterised in
that the textile fabric is built up of fibres consisting of
synthetic polymers, and the weight per unit area is preferably
between 10 and 500 g/m.sup.2, in particular between 20 and 250
g/m.sup.2.
22. The composite material according to claim 1, characterised in
that the mineral coating comprises plaster, lime, chalk and/or
aluminium hydroxide.
23. The composite material according to claim 1, characterised in
that the application quantity of the mineral coating is at least
25% by weight, preferably 30-90% by weight, particularly preferably
40-80% by weight, in each case in relation to the total weight of
the dried coated textile fabric, with the latter preferably being a
nonwoven.
24. The composite material according to claim 1, characterised in
that the mineral coating at least partially penetrates the textile
fabric.
25. The composite material according to claim 1, characterised in
that the mineral coating is only applied to the side of the textile
fabric which faces away from the wood material support.
26. The composite material according to claim 25, characterised in
that the mineral coating penetrates the textile fabric at least
partially, preferably completely, but does not form a complete,
flat and completely covering coating, so that at least parts of the
textile fabric are still in direct contact with the adhesive
layer.
27. The composite material according to claim 1, characterised in
that the adhesive layer comprises construction adhesives, in
particular tile adhesive or wall adhesive, which preferably contain
mortar, plaster, cement, sand and/or chalk constituents.
28. The composite material according to claim 1 or 27,
characterised in that the adhesive layer has a thickness of at
least 0.5 mm, preferably 1-5 mm, particularly preferably 1.5-3
mm.
29. The composite material according to claim 1, characterised in
that the adhesive layer comprises a film, preferably a hot-melt
adhesive film.
30. A method for producing the composite material according to
claim 1, comprising the measures: a) supplying a wood material
support, b) applying at least one adhesive layer to one of the
surfaces of the wood material support, c) applying the textile
fabric to the adhesive layer formed according to b), with the
textile fabric having at least one mineral coating, d) laminating
the structure obtained according to step c) with application of
pressure and where necessary heat, e) drying and finishing.
31. The method according to claim 30, characterised in that the
adhesive layer contains functional materials as additives, with
these having been mixed previously with the adhesive or else are
introduced during or after step b).
32. The method according to claim 30, characterised in that the
adhesive layer can also be applied to the textile fabric which is
provided with the mineral coating, so that the application of the
adhesive layer to one of the surfaces of the wood material support
can be omitted entirely or at least in part.
33. The method according to claim 30, characterised in that,
instead of supplying a prefabricated wood material support, the
wood material support is formed online, preferably directly before
applying the adhesive layer or the mineral-coated textile fabric
which is provided with the adhesive layer.
34. Use of the composite material defined in claims 1 to 29 for
interior finishing of buildings, preferably in construction or wood
frame construction for residential buildings, buildings close to
residential areas and other buildings.
Description
[0001] The present invention relates to a composite material
consisting of a wood material base support and a textile surface
which is applied by means of adhesives and provided with a mineral
coating. The composite material acts as a substitute for
conventional wood material boards in the construction field, which
are covered with plasterboard.
[0002] Previously, in construction/wood frame construction in
residential buildings, properties close to residential areas and
other buildings, plasterboards or similar mineral boards have been
mounted on the wood base support boards (engineered wood boards
such as chipboard, OSB, MDF/LDF, plywood, lightweight construction
boards or the like) in a separate process step. The joins which
arise in the process, in particular in the region of the abutting
edges, can be covered later with a suitable fine filler. The same
applies for the fastening points of the plasterboards on the wood
base support (for example screws/nails and the like).
[0003] The function of the mineral or plasterboards is among other
things to create a base for decorative finishes (for example
wallpaper, paint) on the respective inner side and at the same time
to fulfil certain fire protection requirements.
[0004] Mounting mineral or plasterboards on the wood elements on
site at the construction site or in prefabricated construction
results in increased work and considerable added costs.
[0005] Therefore the object is to provide a composite material
which avoids the above-described disadvantages and can be produced
in a cost-effective manner.
[0006] The present invention provides a remedy and solves this
problem by laminating a mineral-coated nonwoven material mounted
and adhesively bonded to a wood base support. The mounting and
finishing of the composite materials produced according to the
invention can be carried out in a simpler and more cost-effective
manner, as the finished composite material according to the
invention can be mounted in just one process step.
[0007] The subject matter of the present invention is a composite
material which comprises at least one wood material base support
and at least one textile fabric, with the textile fabric being
arranged at least on one side of the wood material base support and
having a mineral coating, and the wood material base support and
the textile fabric being connected by means of an adhesive
layer.
[0008] The textile fabric acts as a support for the mineral
coating, which is applied to the textile surface by means of
coating installations. The coated textile fabric is then laminated
onto the wood material base support and adhesively bonded to the
latter.
[0009] The mineral-coated textile fabric is connected to the
surface of the wood material base support by means of a suitable
adhesive. To this end, an adhesive layer is first applied to the
surface of the wood material base support and then the coated
textile fabric is compressed or laminated with the wood material
base support, for example by means of rolling. After drying and any
necessary finishing, the composite material according to the
invention is ready for its end use.
[0010] Both the components--the textile fabric and the mineral
coating--reduce the occurrence and spread of fire. At the same
time, a homogenous, stable and smooth surface is provided for
further use. Multiple application of paint is no longer necessary
owing to the surface quality.
[0011] The subject matter of the present invention is thus a
composite material comprising: [0012] a) at least one wood material
support, [0013] b) at least one textile fabric which is applied to
at least one of the two sides of the wood material support,
characterised in that the textile fabric has at least one mineral
coating, and an adhesive layer is present between the wood material
support and the textile fabric.
[0014] In a preferred embodiment of the invention, the mineral
coating and/or the adhesive layer contains further functional
materials.
[0015] The wood material base support used according to the
invention is preferably wood materials such as boards, with it
being possible for these to have additional wood material
structures such as frames, grids or three-dimensional reinforcement
structures, which are known as honeycombs, which further reinforce
the wood materials.
[0016] The wood materials are plate- or thread-shaped wood
materials which are produced by mixing the different wood particle
shapes with natural and/or synthetic binders in the course of a hot
pressing process. The wood materials which are used according to
the invention preferably comprise plywood or laminated wood,
woodchip material, in particular chipboards and OSB (oriented
strand boards), wood fibre material, in particular porous wood
fibreboards, vapour-permeable wood fibreboards, hard (high-density)
wood fibreboards (HDF) and medium-density wood fibreboards (MDF),
and Arboform. Arboform is a material consisting of lignin and other
wood constituents, which can be processed thermoplastically.
[0017] The textile fabric used according to the invention is any
fabric which is produced from fibres and from which a textile has
been produced by means of a surface-forming technology.
[0018] The fibre-forming materials are preferably fibres consisting
of synthetic polymers, ceramic fibres, mineral fibres or glass
fibres, with it also being possible for these to be used in the
form of mixtures. If fibre mixtures are present, they can also
contain cellulose or natural fibres. Textiles mean wovens, scrims,
knitted fabrics, mesh and nonwoven fabrics, preferably nonwoven
fabrics.
[0019] The textile fabric can also have a reinforcement consisting
of fibres, threads or filaments. This is useful in particular if
the textile fabric is subjected to high mechanical stresses.
Multifilaments or rovings based on glass, polyester, carbon or
metal are preferred as reinforcement threads. The reinforcement
threads can be used as such or else in the form of a textile
fabric, for example as a woven, scrim, knitted fabrics, mesh or
nonwoven fabric. The reinforcements preferably consist of a
parallel yarn sheet or a scrim.
[0020] The textile surfaces consisting of mineral and ceramic
fibres are aluminosilicate, ceramic, dolomite, wollastonite fibres
or fibres of vulcanites, preferably basalt, diabase and/or
melaphyre fibres, in particular basalt fibres. Diabase and
melaphyre are referred to together as paleobasalts, and diabase is
also popularly known as greenstone.
[0021] The mineral fibre nonwoven can be formed from filaments,
that is, long continuous fibres, or from staple fibres. The average
length of the staple fibres in the nonwoven used according to the
invention consisting of mineral fibres is between 5 and 120 mm,
preferably 8 to 90 mm. In a further embodiment of the invention,
the mineral fibre nonwoven contains a mixture of continuous fibres
and staple fibres. The average fibre diameter of the mineral fibres
is between 5 and 30 .mu.m, preferably between 8 and 24 .mu.m,
particularly preferably between 8 and 16 .mu.m.
[0022] The weight per unit area of the textile fabric consisting of
mineral fibres is between 15 and 500 g/m.sup.2, preferably between
40 and 250 g/m.sup.2, with this data referring to a surface fabric
without a mineral coating.
[0023] Nonwovens are in particular preferred as textiles consisting
of glass fibres. These are made up of filaments, that is, long
continuous fibres or from staple fibres. The average length of the
staple fibres is between 5 and 120 mm, preferably 8 to 90 mm. In a
further embodiment of the invention, the glass fibre nonwoven
contains a mixture of continuous fibres and staple fibres.
[0024] The average diameter of the glass fibres is between 5 and 30
.mu.m, preferably between 8 and 24 .mu.m, particularly preferably
between 10 and 21 .mu.m.
[0025] In addition to the above-mentioned diameters, what are known
as glass microfibres can also be used. The preferred average
diameter of the glass microfibres is between 0.1 and 5 .mu.m. The
microfibres which form the textile surface can also be present in
mixtures with other fibres, preferably glass fibres. A layer-like
structure consisting of microfibres and glass fibres is also
possible, or else the setting of a gradient with which the content
of microfibres increases towards the side of the textile fabric
which faces away from the support.
[0026] The weight per unit area of the textile fabric consisting of
glass fibres is between 15 and 500 g/m.sup.2, preferably between 40
and 250 g/m.sup.2, with this data referring to a surface fabric
without a mineral coating.
[0027] Suitable glass fibres comprise those which have been
produced from A-glass, E-glass, S-glass, C-glass, T-glass or
R-glass.
[0028] The textile surface can be produced by any known method. In
the case of glass nonwovens, this is preferably the dry or wet lay
method.
[0029] Of the textile surfaces consisting of fibres consisting of
synthetic polymers, nonwovens, in particular what are known as
spunbonds, that is, spunbonded nonwovens which are produced by
randomly laying melt-spun filaments, are preferred. They consist of
continuous synthetic fibres consisting of polymer materials which
can be melt-spun. Suitable polymer materials are for example
polyamides such as polyhexamethylene diadipamide, polycaprolactam,
aromatic or partially aromatic polyamides ("aramides"), aliphatic
polyamides such as nylon, partially aromatic or fully aromatic
polyesters, polyphenylene sulphide (PPS), polymers with ether and
keto groups such as polyether ketones (PEK) and polyether ether
ketone (PEEK), polyolefins such as polyethylene or polypropylene,
cellulose or polybenzimidazole. In addition to the above-mentioned
synthetic polymers, polymers which are spun from solution are also
suitable.
[0030] The spunbonded nonwovens preferably consist of polyesters
which can be melt-spun. All known types which are suitable for
fibre production can in principle be considered as the polyester
material. Polyesters which contain at least 95 mol % polyethylene
terephthalate (PET), in particular those consisting of unmodified
PET, are particularly preferred.
[0031] The individual linear densities of the polyester filaments
in the spunbonded nonwoven are between 1 and 16 dtex, preferably 2
to 10 dtex.
[0032] In a further embodiment of the invention, the spunbonded
nonwoven can also be a holt-melt binder-consolidated nonwoven
material which contains support and hot-melt adhesive fibres. The
support and hot-melt adhesive fibres can be derived from any
desired thermoplastic, fibre-forming polymers. Such hot-melt
binder-consolidated spunbonded nonwovens are described for example
in EP-A-0,446,822 and EP-A-0,590,629.
[0033] In addition to continuous filaments (spunbonded method), the
textile surfaces can also be made up of staple fibres or mixtures
of staple fibres and continuous filaments. The individual linear
densities of the staple fibres in the nonwoven are between 1 and 16
dtex, preferably 2 to 10 dtex. The staple length is 1 to 100 mm,
preferably 2 to 50 mm, particularly preferably 2 to 30 mm. The
textile fabric can also be built up of fibres of different
materials in order to be able to achieve particular properties.
[0034] The filaments and/or staple fibres which make up the
nonwoven materials can have a virtually round cross section or else
other shapes such as dumbbell-shaped, kidney-shaped, triangular or
tri- or multi-lobed cross sections. Hollow fibres and bi- or
multi-component fibres can also be used. Furthermore, the hot-melt
adhesive fibre can also be used in the form of bi- or
multi-component fibres.
[0035] The fibres which form the textile fabric can be modified by
customary additives, for example anti-static agents such as carbon
black.
[0036] The weight per unit area of the textile fabric consisting of
synthetic polymer fibres is between 10 and 500 g/m.sup.2,
preferably between 20 and 250 g/m.sup.2.
[0037] The textile fabric can be produced without chemical binders.
In order to achieve the necessary strengths for further processing
of the surface fabric, thermoplastic binder polymers can also be
introduced and/or known needling methods can be used. In addition
to the possibility of mechanical strengthening, for example by
calendering or needling, hydrodynamic needling should also be in
particular mentioned here.
[0038] The textile fabrics are however preferably pre-strengthened
with a chemical binder. The binders used preferably come from the
group of binder systems which are compatible with the coating
material. The binder component is at most 30% by weight.
[0039] The methods for producing mineral-coated textile fabrics, in
particular nonwovens, are known per se. Suitable materials are
applied to a mostly strengthened textile fabric, preferably a
binder-consolidated nonwoven, by means of customary methods.
Standard coating methods such as foam coating, dip methods, doctor
blades etc. are used. After the coating has been applied, the
coated material is dried by known methods.
[0040] The mineral coatings consist of flowable, paste-like
materials, which in addition to water consist essentially of
plaster, lime, chalk or similar inorganic components such as
aluminium hydroxide. The components mentioned are used alone or in
mixtures and/or also in mixtures with other inorganic or organic
components. Polymer dispersions are typically used as the organic
constituents, as binders, thickeners and dispersants. Such mineral
masses are known in principle.
[0041] In addition to these base materials, the mineral coating
mass or adhesive layer can contain further functional materials as
additives. The additives are preferably materials for increasing
fire-resistance (flame retardants), materials for conducting
electrostatic charges, materials for screening electromagnetic
radiation, organic or inorganic pigments, in particular coloured
pigments.
[0042] The flame retardants are inorganic flame retardants,
organophosphorus flame retardants, nitrogen-based flame retardants
or intumescent flame retardants. Halogenated (brominated and
chlorinated) flame retardants can likewise be used but are less
preferred owing to their risk assessment. Examples of such
halogenated flame retardants are polybrominated diphenyl ethers,
for example DecaBDE, tetrabromobisphenol A and HBCD
(hexabromocyclododecane).
[0043] The nitrogen-based flame retardants are melamines and
ureas.
[0044] The organophosphorus flame retardants are typically aromatic
and alkyl esters of phosphoric acid. TCEP (trichloroethyl
phosphate), TCPP (trichloropropyl phosphate), TDCPP
(tridichloroisopropyl phosphate), triphenyl phosphate, trioctyl
phosphate (tris(2-ethylhexyl)phosphate) are preferably used.
[0045] The inorganic flame retardants are typically hydroxides such
as aluminium hydroxide and magnesium hydroxide, borates such as
zinc borate, ammonium compounds such as ammonium sulphate, red
phosphorus, antimony oxides such as antimony trioxide and antimony
pentoxide or vermiculites.
[0046] Anti-static and electromagnetic screening effects can be
achieved by using means for increasing electrical conductivity.
[0047] Anti-static agents are usually particles which are
electrically conductive. Suitable materials are electrically
conductive carbons such as carbon black, graphite and carbon
nanotubes, conductive plastics or fibres consisting of metal or
metal constituents.
[0048] Materials for screening electromagnetic radiation are
usually electrically conductive materials. These can be made up of
the above-mentioned materials in the form of particles or
fibres.
[0049] The inorganic or organic pigments are particle-like
materials, in particular pigments which are also used in dyes.
[0050] The necessary application quantity of the mineral coating
depends on the desired use and the textile fabric or base nonwoven
used. A homogenous and pore-free surface is to be aimed for.
[0051] The application quantity of the mineral coating material is
at least 25% by weight, preferably 30-90% by weight, particularly
preferably 40-80% by weight, in each case in relation to the total
weight of the dried coated textile fabric, with the latter
preferably being a nonwoven.
[0052] The mineral coating at least partially penetrates the
textile fabric or the nonwoven. In a particularly preferred
embodiment of the invention, the textile fabric which is provided
with the mineral coating can still be rolled, that is, can be
processed or stored in the form of rolls.
[0053] In a preferred embodiment, the mineral coating is configured
in such a manner that the textile fabric is only coated on the side
which faces away from the wood material support, that is,
essentially on one side. The mineral coating penetrates the textile
fabric at least partially, preferably completely, but does not form
a complete, flat and completely covering coating, so that at least
parts of the textile fabric are still in direct contact with the
adhesive layer.
[0054] The mineral-coated textile fabric, in particular the
mineral-coated textile nonwoven, is fixed or laminated onto the
wood material support with the aid of an adhesive and adhesively
bonded. To this end, suitable adhesives are first applied to the
surface of the wood material support by known methods. Preferred
methods are rolling, spraying or doctoring methods.
[0055] Suitable adhesives are materials which have a sufficient
adhesive effect with respect to both the surface of the wood
material support and the mineral-coated textile fabric.
Construction adhesives, in particular tile adhesive, wall adhesive
or similar materials are preferably suitable for this. These
usually consist predominantly of mortar, plaster, cement, sand
and/or chalk constituents. These adhesives can furthermore contain
known additives for controlling the viscosity and binding
behaviour.
[0056] The thickness of the adhesive layer applied in this manner
in the composite material according to the invention is at least
0.5 mm, preferably 1-5 mm, particularly preferably 1.5-3 mm.
[0057] In addition to the application of an adhesive to the wood
material support, adhesive films can also be used. Films which
produce their adhesive effect directly when compressed can be used.
Additionally, the use of hot-melt adhesive films is also possible.
In this case the adhesive effect takes place thermoplastically on
compression with the action of heat. When adhesive films are used,
the thickness of the adhesive layer can be selected to be much
smaller compared to the above-mentioned construction adhesives,
with the thickness being no less than a minimum of 10 .mu.m,
preferably 20 .mu.m. The maximum thickness of the adhesive films
can be up to several millimetres. The use of very thick polymer
films, what are known as polymer plates, is also possible.
[0058] The adhesive layer can also contain functional materials as
additives, in particular those additives which result in an
increase in fire-resistance or in improvement in electromagnetic
screening. In order to increase electromagnetic screening, flat
fabrics which can be applied together with the adhesive layer to
the surface of the wood material support (for example aluminium
foil), or as a part of the latter are also suitable.
[0059] In addition to the composite material, a further subject of
the present invention is a method for producing the composite
material, comprising the measures: [0060] a) supplying a wood
material support, [0061] b) applying at least one adhesive layer to
one of the surfaces of the wood material support, [0062] c)
applying the textile fabric to the adhesive layer formed according
to b), with the textile fabric having at least one mineral coating,
[0063] d) laminating the structure obtained according to step c)
with application of pressure and where necessary heat, [0064] e)
drying and finishing.
[0065] Insofar as the adhesive layer is to contain functional
materials as additives, these can be mixed previously with the
adhesive or else introduced during or after step b).
[0066] Instead of supplying a prefabricated wood material support,
the wood material support can also be formed online.
[0067] If the adhesive is supplied as a film, it can be supplied
separately, that is, the adhesive film does not necessarily have to
be applied to the surface of the wood material support.
[0068] In a variant of the method, the adhesive layer can also be
applied to the textile fabric which is provided with the mineral
coating.
[0069] In addition to the composite material and the production
method, the use of the composite material according to the
invention for interior finishing of buildings is also a further
subject of the present invention.
[0070] The composite material according to the invention can be
used in interior finishing in construction/wood frame construction
for residential buildings, buildings close to residential areas and
other buildings as a substitute for conventional wood/plasterboard
systems.
[0071] The product according to the invention provides a surface
for final decoration, improves fire-inhibiting properties, reduces
weight and eliminates additional assembly costs compared to
conventional mineral boards.
[0072] The seams of the individual board boundaries can be covered
manually with suitable filler material as is customary with
plasterboards. The mineral-coated textile surface can be dyed and
can thus contribute to final decoration.
* * * * *