CA2095532C - Method of manufacturing insulating boards composed of interconnected rodshaped mineral fibre elements - Google Patents
Method of manufacturing insulating boards composed of interconnected rodshaped mineral fibre elements Download PDFInfo
- Publication number
- CA2095532C CA2095532C CA002095532A CA2095532A CA2095532C CA 2095532 C CA2095532 C CA 2095532C CA 002095532 A CA002095532 A CA 002095532A CA 2095532 A CA2095532 A CA 2095532A CA 2095532 C CA2095532 C CA 2095532C
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- Prior art keywords
- lamellae
- web
- fibres
- fibre
- fibre web
- 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.)
- Expired - Lifetime
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- 239000000835 fiber Substances 0.000 title claims abstract description 63
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 11
- 239000011707 mineral Substances 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 239000011230 binding agent Substances 0.000 claims abstract description 23
- 230000006835 compression Effects 0.000 claims abstract description 22
- 238000007906 compression Methods 0.000 claims abstract description 22
- 238000005520 cutting process Methods 0.000 claims abstract description 11
- 239000000155 melt Substances 0.000 claims abstract description 5
- 239000007858 starting material Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 22
- 241000446313 Lamella Species 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000001723 curing Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000009987 spinning Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4218—Glass fibres
- D04H1/4226—Glass fibres characterised by the apparatus for manufacturing the glass fleece
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
-
- 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
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B2001/7683—Fibrous blankets or panels characterised by the orientation of the fibres
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Nonwoven Fabrics (AREA)
- Thermal Insulation (AREA)
- Insulating Bodies (AREA)
- Laminated Bodies (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Ladders (AREA)
Abstract
A method of manufacturing insulating board elements composed of interconnected mineral fibre lamellae comprising converting a melt of mineral fibre forming starting material into fibres, supplying a binder to said fibres, causing the fibres to form a fibre web, cutting the fibre web in the longitudinal direction to form lamellae, cutting said lamellae into desired lengths, turning the lamellae 90.degree. about their longitudinal axis and bonding. the fibres together to form boards, the lamellae having been subjected to a surface compression followed by a longitudinal compression either before or after the fibre web is cut into lamellae.
Description
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__..... ....:w'B 1,:3 t I'?:)U-, +4 U -f3;1-_~:3:3;3~1:1.(: i.: N Ei
2~95532.~.
Amended page (dated 28.12.92) 1 PCT/DK91/00383 Method of manufacturing insulating boards composed of interconnected -shaped mineral fibre elements This invention relates to n method of manufacturing insulating boards composed of interconnected rod-shaped mineral fibre elements (in the following referred to as lamellae) comprising converting a melt of a mineral fibre forming starting material into fibres, supplying a binder to said fibres, collecting the fibres on a conveyor belt so as to form a primary fibre web.
A method of the type defined above is disclosed in DE patent publication No. 2307577 C3. In this prior art method the melt is converted into fine mineral fibres by being thrown out from onQ or more rapidly rotating spinning wheels under the simultaneous supply of a binder capable of being cured, and the fibres thus formed are caught on an endless belt in the form of a fibre web wherein the fibres predominantly are oriented parallel to the surface of the web. In this prior art method the fibre web is cut longitudinally into lamellae and the lamellae thus formed are turned 90' about their longitudinal axis whereafter the lamellae thus oriented are bonded together to form a web-1 ike product which is then cut into desired lengths to farm board elements. Due to the turning of the lamellae the fibres of the finished boards will predominantly be oriented in a plane perpendicular to the surfaces of the boards and as a result thereof boards having a considerable stiffness and strength parpkndicularly to the surfaces of the boards are obtained.
CA-A-1209893 discloses a method of producing a fibrous material product made from a laminar mat of glass fibres containing a bonding substance and having fibre lamination Qxtending parallel to the surface of the mat, said method comprising the steps of a) crimping the mat in the longitudinal direction so as to dispose a major portion of said laminations in directions extending across the thickness of the mat, b) heat-curing the bonding substance, c) cutting the mat in the longitudinal direction to form mat strips, d) rotating the strips 90' and e) securing adjacent strips to each other to form a board, In the longitudinal compression of the mat an inner folding 2 ~. ip, g2 ~ SUBSTITUTE SHEET
acv. yc~c~ rN.~, ~yvctu:w : ~~~y ~~-~~~__ . ~ 4 : 5:3 ~ . __..... ,..,:'~y3 y:; m>>;m~ -:-~.:~ a:y~:~~~~.:a.E~ ~,: w :~
""' Amended page (dated 28.12.92) la PCT/DK91/00383 structure is produced in the fibre web, the foldings extending perpendicularly to the longitudinal direction of the fibre web.
4ihen such a web is cut longitudinally into lamellae and the lamellae are turned 90' and bonded together to form a lamella board, each lamella will exhibit a folded layer structure, the folds extending perpendicularly to the main surfaces of the lamella board and thereby imparting a greater stiffness and strength (area strength]
to the lamella board than in the case where a lamella board is composed of rectilinear layers.
Boards produced by the prior art methods described above are suitable for many applications, but for certain applications, e.g.
exterior insulation of roofs and/or building fronts and insulation of floors, the boards possess an insufficient stiffness or strength and/or insulating property.
It has now baQn found that these properties can be considerably improved so as to allow the boards to be used for purposes far which the prior art boards are not suitable by using the method of the lnvQntion which is~characterized in forming a secondary fibre web by doubling of the primary web by laying it in a number of layers transversely to the longitudinal direction of said secondary web, cutting the secondary fibre web in the longitudinal direction to form lamellae, cutting said lamellae into desired lengths, turning the lamellae 90' about their longitudinal axis and bonding thorn together to form boards, and sub~QCting the lamellae to a surface compression followed by a longitudinal compression eithQr before or after the fibre web is cut into lamellae.
Thv invention is based on the disccvery that a board, wherein both the foldings formed by a longitudinal compression of the web to be cut to form lamellae and the individual fibres are positioned perpendicularly to the plane of the board, has superior stiffness and strength over a board, wherein only faldings extend perpendicularly to the surface of the board, whereas the fibres are positioned with arbitrary orientation in a plane perpendicular to the surface of the board.
~1 ~~~T1'T1~~'~ S~ =~~
RCY. y~ = t:l'A_~il~:\Cfi(::~i U 1 : _>t3- 1'?, ~J_.~ _: , t ~>- : ~rt~ ~ , __..... ,... '~'~~3 L:31 t 19U~ +~t;3 _t3J _ ~~:.3;1J~t ~6ES5,: I1 1 ~>
~ ~09~532 Amended page (dated 28,12.92) lb PCT/DK91/00383 Also, the invention is based on the discovery that a board having such a construction may be provided by using lamellae made from a secondary fibre web formed by transverse doubling of a primary web having a fibre orientation parallel to the surface of the web and predominantly in the longitudinal direction of the web.
The method of the invention has provided a possibility of producing a 1am411a board having a grQatly increased stiffness and area strength compared to lamellae boards made from primary fibre webs, i0 wherein the fibres are positioned with arbitrary orientation in a plane parallel to the plane of the web.
A particularly high stiffness is obtained with boards made from lamellae obtained by cutting ~ sQCOndary web longitudinally and subsequently turning them 90' about their longitudinal axis because the fibres boing predominantly oriented transversely to the secondary web will be positioned perpendicularly to the plane of the board.
By compressing the fibre web longitudinally before turning the lamellae 90', the compressive strength of the finished lamellae is increased and thQ above mentioned increase in stiffness and the increase in compression strength appear to support one another, which is evidenced by the fact that the two measures apparently produce a total effect which is greater than the sum of effects produced by the measures separately.
~. ~'~ 1 ~ ~,i'~ L ~~~'! ~~ ~
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__'. . __.. ' 13_ 1 ,'~ __ . . . '_': '. __..... ...45~31,,311,1J(J, +~'.~_F3:)_:;3:):Yi~1F,5.:N,I I
.. ~~95~~2 -- Amended page (dated 28.12.92) 2 PCT/DK91/00383 Instead of increasing the strength it may be desirable to reduce the density as this rnay cause an Increase in the Insulating capacity.
Thus, it is well known that boards of rock wool made from lamellae having a content of shots of about 30%, the shots being greater than 63 um, have an optimum insulating capacity at a density of about 40 kg/ms.
It is well known that a fibre web can be produced by Initially producing a relatively thin primary web and subsequently doubling the primary web to form a secondary relatively thick fibre web comprising partially overlapping layers of the primary web, see DE
patent S~.iSS'~'iTUT~C S3-'IEET
' ,~
(~ ~ ~31 ~l I l ~J() +4.J 8.) ' 3J ~i~~-CG ~ I/ t'o KW-v~~Le~-WVeFiW Ji ~-'8_1'~.W?_:. 1': vv. . __......... ~~ . ." ~ .'__ ____..._."._ ., ~~95532 Amended page (dated 28.12.92) 3 PCT/DK91/00383 publication No. 3501897.
When a fibre wQb is doubled tho fibres ar8 collected on a high-velocity conveyor belt, e_g, running with a velocity of 130 m/min, in tho form of a thin fibre layer, e.g. having a weight of 0.3 kg/mz. When collected in this manner, the fibres will be dQposited on the conveyor belt in directions parallel to the surface of the web and predominantly parallel to thQ direction of movQmQnt of the belt. As a result thereof the fibre web will obtain a tensile IO strenght which is about twicQ as high in the longitudinal direction of the fibre web as in the transverse direction. The secondary fibre web is formed by laying by means of pendulum belts the thin primary web in a number of layers, e.g. 20, transvQrsoly to the longttudinal direction of tho secondary web, the number of layors being determined by the desired area weight of the secondary web.
In the doubled web the fibres are predominantly oriented transversely to the web when the layers of the primary web extend transversQly to the secondary web.
The purpose of doubling a fibre web is ordinarily to obtain a secondary web having a relatively great thickness and having a small variation in density in the longitudinal direction.
In the method according to the invention lamellae made from a doubled fibre web comprising from 4 to 25 layers and having a surface weight of from 1 to 8 kg/m= are preferably used.
~~~~'~iTll.f~ 5~'1~~T
v Ky . y-(y FFAyII:i~Ctli'v 0 L : ~?~_ 3 ~>, c3~o -: , 14 : 5f~ : , __.....
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AmendQd page (d;ted 28.12.92) 4 PCf/OK91/00383 Methods for longitudinally compressing fibre webs are known per se.
In a preferred prior art method, cf. CH patent specification No.
620861, a mineral fibre web is introduced into the space between two parallel conveyor belts which travel with a velocity V1 and subsequently Into the space between two further conveyor bolts which travel with a velocity 112, which is lower than V1. Depending on the relationship botwaan V1 and V2, thQ fibre web is morn or less compressed longitudinally. The relatiansship between Y1 and V2 is selected so that folds are farmed by the longitudinal compression, said folds extending transversely to the longitudinal direction of the web. In another prefQrred method, cf. US patent specification No. 2,500,690, the longitudinal compression is effected by means of a row of roller sets, said rollers rotating with a velocity which decreases in the longitudinal direction of thQ fibre web.
It is prefQrred to compress the fibre web longitudinally before cutting it into lamellae but the longitudinal Compression may also be effected when the web has bean cut into lamellae..
For use in the method according to the invention lamellae made from fibre webs which have been compressed longitudinally in a ratio of from 1.5:1 to ~:1 arQ preferred.
As mQntioned above, the longitudinal compression should be effected following the vertical compression and when using a heat curable binder, the said longitudinal compression is effected before the fibre web is introduced into a curing oven.
Methods for subjecting a fibre web to a surface compression are also AMENDED PAGE (dated 29.05.92) 5 PCT/DK91/00383 well known. In such a prior art method the fibre web to be compressed is introduced into the space between the rollers in a series of roller sets, the spacing between the rollers in the roller sets decreasing in the direction of movement of the fibre web.
For use in the method according to the invention lamellae made from a fibre web which has been surface compressed in a ratio of from 3:1 to 6:1 are preferred.
The cutting of the fibre web to form lamellae is preferably effected by means of saws which may have the form of compass saws, cf. DE
patent publication No. 2307577, or circular saws, cf. SE published patent application No. 441764 and DE patent publication No. 2032624.
In a preferred embodiment of the method according to the invention the rod-shaped fibre elements are cut into desired lengths before being turned 90° and combined into lamella boards. Such turning may e.g. be effected in connection with the transfer of the cut lamellae from one conveyor belt upon which they are advanced in the longitudinal direction of the lamellae onto another conveyor belt moving perpendicularly to the first belt and upon which the lamellae are conveyed in a direction perpendicularly to their longitudinal direction.
This embodiment is advantageous in that the apparatus used for such turning of the lamellae requires little space.
Alternatively the turning of the lamellae can be effected during the cutting of the web into lamellae, e.g. as described in DE patent publication No. 2307577 or DE 2032624.
The properly oriented lamellae which are to form a lamella board can be bonded together, preferably by means of a binder which is applied to the upper side of the fibre web and optionally to the lower side thereof, and preferably before the web is cut into lamellae.
However, it is not necessary to add an additional binder as the binder which is supplied to the fibres in connection with their formation is also present at the surfaces of the lamellae and it may SU~I~'TiTIJT~ ~::~r~~r.~° ~~
AMENDED PAGE (dated 29.05.92 6 PCT/DK91/00383 be sufficient to bond together the lamellae if they are pressed intimately together during the curing of the binder in the curing oven, cf. DK patent application No. 3526/75.
If a heat curable binder has been supplied to the fibres in connection with their formation and if a heat curable binder is also used for bonding together the lamellae, the binders can be cured in one step by conveying the properly oriented and combined lamellae through a curing oven in which they are heated to curing temperature, which is preferably between 210 and 260°C when phenol formaldehyd resin is used as a binder.
However, the binder for bonding together the lamellae may also be suppl i ed after the f i bre web/1 amel 1 ae have been heated i n a curi ng oven to cure the binder supplied to the fibres in connection with their formation.
By supplying binder after the curi.n. ven other binders than heat curable binders can be used.
The invention will now be described in further detail with reference to the drawing which schematically shows a plant for carrying out the method according to th invention.
In the drawing 1 designates an oven for manufacturing a mineral fibre forming melt which is supplied to a spinner 3 having four rapidly rotating spinning wheels 4 via a melt outlet 2.
Simultaneously with the introduction of melt onto the outer surfaces of the spinning wheels and binder is sprayed, a strong gas stream is passed across the surfaces of the spinning wheels in the axial direction, thereby causing the formation of fibres 5 which are collected on an endless perforated conveyor belt 6 which is supported by three rollers 7, one of which is driven by driving means (not shown). As a result thereof a fibre web 8 (the primary web) is formed and this web is introduced into the space between two pendulum belts 10 and 11 by means of a further endless conveyor belt 9. The lower ends of the pendulum belts are located pivotally in a direction perpendicularly to~the direction of movement of a further endless conveyor belt 12 which is supported by two rollers 13, one ~.
. ~,~~5~32 _ ' AMENDED PAGE (dated 29.05.92) 7 PCT/DK91/00383 of which is driven by driving means (not shown).
The ampl i tude of the osci 11 at i on of the 1 ower part of the pendul um belts 10 and 11 corresponds to the width of the conveyor belt 12 and a doubled fibre web 14 of partially overlapping fibre layers 8 is thus formed on the belt 12.
The fibre web 14 is subsequently introduced into a surface compression section consisting of three sets of co-operating rollers 15, 16 and 17, the spacing between the rollers in the roller sets decreasing in the longitudinal direction of the fibre web.
Subsequently the fibre web 14 is introduced into the longitudinal compression section which also consists of three roller sets 18, 19 and 20, the rollers of the latter sets of rollers rotating with the same velocity, which velocity is lower than that of the sets of rollers 15, 16 and 17.
The fibre web which has been compressed longitudinally is then introduced into a curing oven 21 in which it is heated to a temperature which is sufficiently high to cure the binder and to fix the fibres relatively to one another.
After having passed the curing oven the heat treated fibre web 14 is cut in the longitudinal direction by means of saws 22 so as to form lamellae 23 which are subsequently cut transversely by means of a transverse saw 24. The lamellae 23 thus cut are then turned 90° and combined to form a board element 25 on a conveyor belt 26 and at the same time a binder is applied to the contact surfaces by means of an application apparatus (not shown) to bond together the lamellae 23.
As indicated in the drawing the fibre layers formed from the primary web 8 extend substantially perpendicularly to the surface of the finished board element, and as they are also folded they are highly resistant against compression.
Instead of being bonded together the lamellae can be joined together by means of e.g. strips, strings, non-woven fabric or paper on one side or both sides of the boards.
Amended page (dated 28.12.92) 1 PCT/DK91/00383 Method of manufacturing insulating boards composed of interconnected -shaped mineral fibre elements This invention relates to n method of manufacturing insulating boards composed of interconnected rod-shaped mineral fibre elements (in the following referred to as lamellae) comprising converting a melt of a mineral fibre forming starting material into fibres, supplying a binder to said fibres, collecting the fibres on a conveyor belt so as to form a primary fibre web.
A method of the type defined above is disclosed in DE patent publication No. 2307577 C3. In this prior art method the melt is converted into fine mineral fibres by being thrown out from onQ or more rapidly rotating spinning wheels under the simultaneous supply of a binder capable of being cured, and the fibres thus formed are caught on an endless belt in the form of a fibre web wherein the fibres predominantly are oriented parallel to the surface of the web. In this prior art method the fibre web is cut longitudinally into lamellae and the lamellae thus formed are turned 90' about their longitudinal axis whereafter the lamellae thus oriented are bonded together to form a web-1 ike product which is then cut into desired lengths to farm board elements. Due to the turning of the lamellae the fibres of the finished boards will predominantly be oriented in a plane perpendicular to the surfaces of the boards and as a result thereof boards having a considerable stiffness and strength parpkndicularly to the surfaces of the boards are obtained.
CA-A-1209893 discloses a method of producing a fibrous material product made from a laminar mat of glass fibres containing a bonding substance and having fibre lamination Qxtending parallel to the surface of the mat, said method comprising the steps of a) crimping the mat in the longitudinal direction so as to dispose a major portion of said laminations in directions extending across the thickness of the mat, b) heat-curing the bonding substance, c) cutting the mat in the longitudinal direction to form mat strips, d) rotating the strips 90' and e) securing adjacent strips to each other to form a board, In the longitudinal compression of the mat an inner folding 2 ~. ip, g2 ~ SUBSTITUTE SHEET
acv. yc~c~ rN.~, ~yvctu:w : ~~~y ~~-~~~__ . ~ 4 : 5:3 ~ . __..... ,..,:'~y3 y:; m>>;m~ -:-~.:~ a:y~:~~~~.:a.E~ ~,: w :~
""' Amended page (dated 28.12.92) la PCT/DK91/00383 structure is produced in the fibre web, the foldings extending perpendicularly to the longitudinal direction of the fibre web.
4ihen such a web is cut longitudinally into lamellae and the lamellae are turned 90' and bonded together to form a lamella board, each lamella will exhibit a folded layer structure, the folds extending perpendicularly to the main surfaces of the lamella board and thereby imparting a greater stiffness and strength (area strength]
to the lamella board than in the case where a lamella board is composed of rectilinear layers.
Boards produced by the prior art methods described above are suitable for many applications, but for certain applications, e.g.
exterior insulation of roofs and/or building fronts and insulation of floors, the boards possess an insufficient stiffness or strength and/or insulating property.
It has now baQn found that these properties can be considerably improved so as to allow the boards to be used for purposes far which the prior art boards are not suitable by using the method of the lnvQntion which is~characterized in forming a secondary fibre web by doubling of the primary web by laying it in a number of layers transversely to the longitudinal direction of said secondary web, cutting the secondary fibre web in the longitudinal direction to form lamellae, cutting said lamellae into desired lengths, turning the lamellae 90' about their longitudinal axis and bonding thorn together to form boards, and sub~QCting the lamellae to a surface compression followed by a longitudinal compression eithQr before or after the fibre web is cut into lamellae.
Thv invention is based on the disccvery that a board, wherein both the foldings formed by a longitudinal compression of the web to be cut to form lamellae and the individual fibres are positioned perpendicularly to the plane of the board, has superior stiffness and strength over a board, wherein only faldings extend perpendicularly to the surface of the board, whereas the fibres are positioned with arbitrary orientation in a plane perpendicular to the surface of the board.
~1 ~~~T1'T1~~'~ S~ =~~
RCY. y~ = t:l'A_~il~:\Cfi(::~i U 1 : _>t3- 1'?, ~J_.~ _: , t ~>- : ~rt~ ~ , __..... ,... '~'~~3 L:31 t 19U~ +~t;3 _t3J _ ~~:.3;1J~t ~6ES5,: I1 1 ~>
~ ~09~532 Amended page (dated 28,12.92) lb PCT/DK91/00383 Also, the invention is based on the discovery that a board having such a construction may be provided by using lamellae made from a secondary fibre web formed by transverse doubling of a primary web having a fibre orientation parallel to the surface of the web and predominantly in the longitudinal direction of the web.
The method of the invention has provided a possibility of producing a 1am411a board having a grQatly increased stiffness and area strength compared to lamellae boards made from primary fibre webs, i0 wherein the fibres are positioned with arbitrary orientation in a plane parallel to the plane of the web.
A particularly high stiffness is obtained with boards made from lamellae obtained by cutting ~ sQCOndary web longitudinally and subsequently turning them 90' about their longitudinal axis because the fibres boing predominantly oriented transversely to the secondary web will be positioned perpendicularly to the plane of the board.
By compressing the fibre web longitudinally before turning the lamellae 90', the compressive strength of the finished lamellae is increased and thQ above mentioned increase in stiffness and the increase in compression strength appear to support one another, which is evidenced by the fact that the two measures apparently produce a total effect which is greater than the sum of effects produced by the measures separately.
~. ~'~ 1 ~ ~,i'~ L ~~~'! ~~ ~
ra.-~
iCC:1 . W ~ i~.l':~ '~li.:~,< tlE.:\ tJ l ; o ~o ~ ~:
__'. . __.. ' 13_ 1 ,'~ __ . . . '_': '. __..... ...45~31,,311,1J(J, +~'.~_F3:)_:;3:):Yi~1F,5.:N,I I
.. ~~95~~2 -- Amended page (dated 28.12.92) 2 PCT/DK91/00383 Instead of increasing the strength it may be desirable to reduce the density as this rnay cause an Increase in the Insulating capacity.
Thus, it is well known that boards of rock wool made from lamellae having a content of shots of about 30%, the shots being greater than 63 um, have an optimum insulating capacity at a density of about 40 kg/ms.
It is well known that a fibre web can be produced by Initially producing a relatively thin primary web and subsequently doubling the primary web to form a secondary relatively thick fibre web comprising partially overlapping layers of the primary web, see DE
patent S~.iSS'~'iTUT~C S3-'IEET
' ,~
(~ ~ ~31 ~l I l ~J() +4.J 8.) ' 3J ~i~~-CG ~ I/ t'o KW-v~~Le~-WVeFiW Ji ~-'8_1'~.W?_:. 1': vv. . __......... ~~ . ." ~ .'__ ____..._."._ ., ~~95532 Amended page (dated 28.12.92) 3 PCT/DK91/00383 publication No. 3501897.
When a fibre wQb is doubled tho fibres ar8 collected on a high-velocity conveyor belt, e_g, running with a velocity of 130 m/min, in tho form of a thin fibre layer, e.g. having a weight of 0.3 kg/mz. When collected in this manner, the fibres will be dQposited on the conveyor belt in directions parallel to the surface of the web and predominantly parallel to thQ direction of movQmQnt of the belt. As a result thereof the fibre web will obtain a tensile IO strenght which is about twicQ as high in the longitudinal direction of the fibre web as in the transverse direction. The secondary fibre web is formed by laying by means of pendulum belts the thin primary web in a number of layers, e.g. 20, transvQrsoly to the longttudinal direction of tho secondary web, the number of layors being determined by the desired area weight of the secondary web.
In the doubled web the fibres are predominantly oriented transversely to the web when the layers of the primary web extend transversQly to the secondary web.
The purpose of doubling a fibre web is ordinarily to obtain a secondary web having a relatively great thickness and having a small variation in density in the longitudinal direction.
In the method according to the invention lamellae made from a doubled fibre web comprising from 4 to 25 layers and having a surface weight of from 1 to 8 kg/m= are preferably used.
~~~~'~iTll.f~ 5~'1~~T
v Ky . y-(y FFAyII:i~Ctli'v 0 L : ~?~_ 3 ~>, c3~o -: , 14 : 5f~ : , __.....
..~.:~5~.3 Ly3 I L'?:3()-~ +øJ t3J '3:3JJ~L4 E35: N 1:3 ~g55~~
AmendQd page (d;ted 28.12.92) 4 PCf/OK91/00383 Methods for longitudinally compressing fibre webs are known per se.
In a preferred prior art method, cf. CH patent specification No.
620861, a mineral fibre web is introduced into the space between two parallel conveyor belts which travel with a velocity V1 and subsequently Into the space between two further conveyor bolts which travel with a velocity 112, which is lower than V1. Depending on the relationship botwaan V1 and V2, thQ fibre web is morn or less compressed longitudinally. The relatiansship between Y1 and V2 is selected so that folds are farmed by the longitudinal compression, said folds extending transversely to the longitudinal direction of the web. In another prefQrred method, cf. US patent specification No. 2,500,690, the longitudinal compression is effected by means of a row of roller sets, said rollers rotating with a velocity which decreases in the longitudinal direction of thQ fibre web.
It is prefQrred to compress the fibre web longitudinally before cutting it into lamellae but the longitudinal Compression may also be effected when the web has bean cut into lamellae..
For use in the method according to the invention lamellae made from fibre webs which have been compressed longitudinally in a ratio of from 1.5:1 to ~:1 arQ preferred.
As mQntioned above, the longitudinal compression should be effected following the vertical compression and when using a heat curable binder, the said longitudinal compression is effected before the fibre web is introduced into a curing oven.
Methods for subjecting a fibre web to a surface compression are also AMENDED PAGE (dated 29.05.92) 5 PCT/DK91/00383 well known. In such a prior art method the fibre web to be compressed is introduced into the space between the rollers in a series of roller sets, the spacing between the rollers in the roller sets decreasing in the direction of movement of the fibre web.
For use in the method according to the invention lamellae made from a fibre web which has been surface compressed in a ratio of from 3:1 to 6:1 are preferred.
The cutting of the fibre web to form lamellae is preferably effected by means of saws which may have the form of compass saws, cf. DE
patent publication No. 2307577, or circular saws, cf. SE published patent application No. 441764 and DE patent publication No. 2032624.
In a preferred embodiment of the method according to the invention the rod-shaped fibre elements are cut into desired lengths before being turned 90° and combined into lamella boards. Such turning may e.g. be effected in connection with the transfer of the cut lamellae from one conveyor belt upon which they are advanced in the longitudinal direction of the lamellae onto another conveyor belt moving perpendicularly to the first belt and upon which the lamellae are conveyed in a direction perpendicularly to their longitudinal direction.
This embodiment is advantageous in that the apparatus used for such turning of the lamellae requires little space.
Alternatively the turning of the lamellae can be effected during the cutting of the web into lamellae, e.g. as described in DE patent publication No. 2307577 or DE 2032624.
The properly oriented lamellae which are to form a lamella board can be bonded together, preferably by means of a binder which is applied to the upper side of the fibre web and optionally to the lower side thereof, and preferably before the web is cut into lamellae.
However, it is not necessary to add an additional binder as the binder which is supplied to the fibres in connection with their formation is also present at the surfaces of the lamellae and it may SU~I~'TiTIJT~ ~::~r~~r.~° ~~
AMENDED PAGE (dated 29.05.92 6 PCT/DK91/00383 be sufficient to bond together the lamellae if they are pressed intimately together during the curing of the binder in the curing oven, cf. DK patent application No. 3526/75.
If a heat curable binder has been supplied to the fibres in connection with their formation and if a heat curable binder is also used for bonding together the lamellae, the binders can be cured in one step by conveying the properly oriented and combined lamellae through a curing oven in which they are heated to curing temperature, which is preferably between 210 and 260°C when phenol formaldehyd resin is used as a binder.
However, the binder for bonding together the lamellae may also be suppl i ed after the f i bre web/1 amel 1 ae have been heated i n a curi ng oven to cure the binder supplied to the fibres in connection with their formation.
By supplying binder after the curi.n. ven other binders than heat curable binders can be used.
The invention will now be described in further detail with reference to the drawing which schematically shows a plant for carrying out the method according to th invention.
In the drawing 1 designates an oven for manufacturing a mineral fibre forming melt which is supplied to a spinner 3 having four rapidly rotating spinning wheels 4 via a melt outlet 2.
Simultaneously with the introduction of melt onto the outer surfaces of the spinning wheels and binder is sprayed, a strong gas stream is passed across the surfaces of the spinning wheels in the axial direction, thereby causing the formation of fibres 5 which are collected on an endless perforated conveyor belt 6 which is supported by three rollers 7, one of which is driven by driving means (not shown). As a result thereof a fibre web 8 (the primary web) is formed and this web is introduced into the space between two pendulum belts 10 and 11 by means of a further endless conveyor belt 9. The lower ends of the pendulum belts are located pivotally in a direction perpendicularly to~the direction of movement of a further endless conveyor belt 12 which is supported by two rollers 13, one ~.
. ~,~~5~32 _ ' AMENDED PAGE (dated 29.05.92) 7 PCT/DK91/00383 of which is driven by driving means (not shown).
The ampl i tude of the osci 11 at i on of the 1 ower part of the pendul um belts 10 and 11 corresponds to the width of the conveyor belt 12 and a doubled fibre web 14 of partially overlapping fibre layers 8 is thus formed on the belt 12.
The fibre web 14 is subsequently introduced into a surface compression section consisting of three sets of co-operating rollers 15, 16 and 17, the spacing between the rollers in the roller sets decreasing in the longitudinal direction of the fibre web.
Subsequently the fibre web 14 is introduced into the longitudinal compression section which also consists of three roller sets 18, 19 and 20, the rollers of the latter sets of rollers rotating with the same velocity, which velocity is lower than that of the sets of rollers 15, 16 and 17.
The fibre web which has been compressed longitudinally is then introduced into a curing oven 21 in which it is heated to a temperature which is sufficiently high to cure the binder and to fix the fibres relatively to one another.
After having passed the curing oven the heat treated fibre web 14 is cut in the longitudinal direction by means of saws 22 so as to form lamellae 23 which are subsequently cut transversely by means of a transverse saw 24. The lamellae 23 thus cut are then turned 90° and combined to form a board element 25 on a conveyor belt 26 and at the same time a binder is applied to the contact surfaces by means of an application apparatus (not shown) to bond together the lamellae 23.
As indicated in the drawing the fibre layers formed from the primary web 8 extend substantially perpendicularly to the surface of the finished board element, and as they are also folded they are highly resistant against compression.
Instead of being bonded together the lamellae can be joined together by means of e.g. strips, strings, non-woven fabric or paper on one side or both sides of the boards.
Claims (5)
1. A method of manufacturing insulating board elements composed of interconnected rod-shaped mineral fibre elements comprising converting a melt of a mineral fibre forming starting material into fibres, supplying a binder to said fibres, collecting the fibres on a conveyor belt so as to form a primary fibre web, characterized in forming a secondary fibre web by doubling of the primary web by laying it in a number of layers transversely to the longitudinal direction of said secondary web, cutting the secondary fibre web in the longitudinal direction to form lamellae, cutting said lamellae into desired lengths, turning the lamellae 90° about their longitudinal axis and bonding them together to form boards, and subjecting the lamellae to a surface compression followed by a longitudinal compression either before ar after the fibre web is cut into lamellae.
2. A method according to claim 1, characterized in using lamellae which have been compressed longitudinally in a ratio of from 1.5:1 to 4:1.
3. A method according to claim 1 or 2, characterized in using lamellae which have been subjected to a surface compression in a ratio of from 3:1 to 6:1.
4. A method according to any of the claims 1-3, characterized in that the fibre web is cut into lamellae having desired lengths before being turned 90° and combined into lamella boards.
5. A method according to any of the claims 1-4 and comprising supplying to the fibres a heat curable binder, characterized in that the surface compression and the longitudinal compression are effected before the fibre web is subjected to a heat treatment to cure the binder.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKDK2915/90 | 1990-12-07 | ||
| DK291590A DK165926B (en) | 1990-12-07 | 1990-12-07 | PROCEDURE FOR THE MANUFACTURE OF INSULATION PLATES COMPOSED BY INVOLVED CONNECTED STABLE MINERAL FIBER ELEMENTS |
| PCT/DK1991/000383 WO1992010602A1 (en) | 1990-12-07 | 1991-12-06 | Method of manufacturing insulating boards composed of interconnected rod-shaped mineral fibre elements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2095532A1 CA2095532A1 (en) | 1992-06-08 |
| CA2095532C true CA2095532C (en) | 2000-11-07 |
Family
ID=8117081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002095532A Expired - Lifetime CA2095532C (en) | 1990-12-07 | 1991-12-06 | Method of manufacturing insulating boards composed of interconnected rodshaped mineral fibre elements |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP0560878B1 (en) |
| AT (1) | ATE113087T1 (en) |
| AU (1) | AU9080591A (en) |
| CA (1) | CA2095532C (en) |
| CZ (1) | CZ282594B6 (en) |
| DE (1) | DE69104730T2 (en) |
| DK (1) | DK165926B (en) |
| ES (1) | ES2062884T3 (en) |
| FI (1) | FI112953B (en) |
| PL (1) | PL168628B1 (en) |
| SK (1) | SK282244B6 (en) |
| WO (1) | WO1992010602A1 (en) |
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| DE4230356C2 (en) * | 1992-09-10 | 1998-02-12 | Heraklith Holding Ag | Method and device for producing an insulation board from fibrous materials with low bulk density, and insulation board produced therewith |
| DK3693D0 (en) * | 1993-01-14 | 1993-01-14 | Rockwool Int | A METHOD OF PRODUCING A MINERAL FIBER INSULATING WEB, A PLANT FOR PRODUCING A MINERAL FIBER WEB, AND A MINERAL FIBER INSULATED PLATE |
| DK3793D0 (en) * | 1993-01-14 | 1993-01-14 | Rockwool Int | A METHOD OF PRODUCING A MINERAL FIBER INSULATING WEB A PLANT FOR PRODUCING A MINERAL WEB, AND A MINERAL FIBER INSULATED PLATE |
| DK3593D0 (en) * | 1993-01-14 | 1993-01-14 | Rockwool Int | A METHOD FOR PRODUCING A MINERAL FIBER INSULATING WEB, A PLANT FOR PRODUCING A MINERAL FIBER INSULATING WEB, AND A MINERAL FIBER INSULATED PLATE |
| DE4309990A1 (en) * | 1993-03-30 | 1994-10-06 | Malimo Maschinenbau | Process for the production of a large-volume nonwoven having surfaces consolidated on both sides |
| US5318644A (en) * | 1993-06-02 | 1994-06-07 | Owens-Corning Fiberglas Technology Inc. | Method and apparatus for making an insulation assembly |
| FR2709919A1 (en) * | 1993-08-10 | 1995-03-24 | Saint Gobain Isover | Subsoil for growing above ground |
| CZ293826B6 (en) | 1994-01-28 | 2004-08-18 | Rockwooláinternationaláa@S | Process for producing cured non-woven mineral fiber web, apparatus for making the same, mineral fiberboard and a tubular insulating element |
| FI941072A (en) * | 1994-03-07 | 1995-09-08 | Nokia Mobile Phones Ltd | Procedure for data communication, transmitters and receivers |
| AU2205795A (en) * | 1994-05-10 | 1995-11-29 | Owens Corning | Direct forming method of collecting long wool fibers |
| CH691816A5 (en) * | 1996-03-25 | 2001-10-31 | Flumroc Ag | Process and apparatus for producing mineral fibreboard |
| HUP9902183A3 (en) * | 1996-03-25 | 1999-12-28 | Rockwool Int | Process and apparatus for the production of a mineral fibreboard |
| CH692114A5 (en) * | 1996-09-02 | 2002-02-15 | Flumroc Ag | Process and apparatus for producing mineral fibreboard |
| CH691960A5 (en) * | 1996-09-02 | 2001-12-14 | Flumroc Ag | Process and apparatus for producing mineral fibreboard |
| CZ291481B6 (en) * | 1996-03-25 | 2003-03-12 | Rockwool International A/S | Continuous process for the production of a bonded mineral fiberboards and apparatus for making the same |
| WO1998057000A1 (en) | 1997-06-13 | 1998-12-17 | Rockwool Limited | Fire stops for use in buildings |
| GB9717484D0 (en) | 1997-08-18 | 1997-10-22 | Rockwool Int | Roof and wall cladding |
| DE69909454T3 (en) † | 1998-03-19 | 2009-09-10 | Rockwool International A/S | Method and device for producing a mineral fiber product |
| DE19830066B4 (en) * | 1998-06-30 | 2010-01-14 | Gessner, Dieter | insulating element |
| HU228444B1 (en) * | 1999-09-28 | 2013-03-28 | Rockwool Int | Bonded fibre products |
| EP1106743B1 (en) * | 1999-12-08 | 2005-04-06 | Deutsche Rockwool Mineralwoll GmbH & Co. OHG | Process and device for manufacturing a fibrous insulation web |
| DE10013644A1 (en) * | 2000-03-18 | 2001-09-27 | Oesterr Heraklith Gmbh | Method and device for producing a mineral fiber mat |
| DE10041481B4 (en) | 2000-08-24 | 2006-01-19 | Deutsche Rockwool Mineralwoll Gmbh & Co. Ohg | Insulating element and method and apparatus for producing an insulating element, in particular a rolling and / or windable insulation web of mineral fibers |
| EP1322564B1 (en) * | 2000-09-28 | 2006-10-25 | Rockwool International A/S | Bonded fibre products |
| FI20012607A (en) * | 2001-12-31 | 2003-07-01 | Paroc Group Oy Ab | A method and apparatus for making a fiber oriented mineral wool rug |
| DK1709132T4 (en) † | 2004-01-19 | 2015-07-20 | Rockwool Int | Process for making mineral wool panels |
| EP1561847B1 (en) * | 2004-01-21 | 2007-07-25 | Deutsche Rockwool Mineralwoll GmbH & Co. OHG | Method and apparatus for manufacturing insulating webs or plates from mineral fibers |
| PT1559845E (en) * | 2004-01-31 | 2007-10-18 | Rockwool Mineralwolle | Process for manufacturing an insulating mat of mineral fibres and insulating mat |
| PL1708876T3 (en) * | 2004-01-31 | 2012-12-31 | Deutsche Rockwool Mineralwoll Gmbh & Co Ohg | Method for the production of a web of insulating material and web of insulating material |
| FI1743076T4 (en) | 2004-04-02 | 2023-08-31 | Acoustic elements and their production | |
| WO2008155401A1 (en) * | 2007-06-20 | 2008-12-24 | Rockwool International A/S | Mineral fibre product |
| EP2100992A1 (en) * | 2008-03-12 | 2009-09-16 | Paroc Oy Ab | Method and arrangement for improving the runnability of a continuous mineral fibre web |
| FI20096094A (en) * | 2009-10-23 | 2011-04-24 | Finnfoam Oy | A method of making an insulating board and an insulating board |
| FI20105564A0 (en) | 2010-05-21 | 2010-05-21 | Saint Gobain Rakennustuotteet | Insulation piece, insulating method and insulating packaging |
| RU2506158C1 (en) * | 2012-05-29 | 2014-02-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" (национальный исследовательский университет) (ФГБОУ ВПО "ЮУрГУ" (НИУ)) | Method of making mineral wool article |
| LT2931955T (en) * | 2012-12-11 | 2017-03-27 | Rockwool International A/S | A method of forming a cured mineral fibre product |
| US10214840B2 (en) | 2014-11-24 | 2019-02-26 | Rockwool International A/S | Method of producing a sandwich panel core of mineral wool fibres |
| PL412081A1 (en) | 2015-04-21 | 2016-10-24 | Tabor Aneta Tomisol | Insulation lamella mat and the production line for manufacturing insulation lamella mat |
| SI3455185T1 (en) | 2016-05-13 | 2021-08-31 | Rockwool International A/S | Binder composition for mineral fibers comprising at least one hydrocolloid. |
| FR3052762B1 (en) | 2016-06-17 | 2020-09-25 | Saint Gobain Isover | INSTALLATION FOR TREATMENT OF A MATTRESS OF MINERAL FIBERS BY DETECTION AND EVACUATION OF LOCATED FAULTS, AND CORRESPONDING PROCEDURE |
| PL3276064T3 (en) | 2016-07-27 | 2021-03-08 | Technische Universität Dresden | Sandwich core comprising a fibre material and method for its preparation and sandwich panel |
| PL3628481T3 (en) | 2018-09-27 | 2023-01-16 | Rockwool International A/S | A sandwich panel |
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| US2546230A (en) * | 1947-10-10 | 1951-03-27 | Johns Manville | Glass product and method of making the same |
| US3493452A (en) * | 1965-05-17 | 1970-02-03 | Du Pont | Apparatus and continuous process for producing fibrous sheet structures |
| BE795596A (en) * | 1972-02-17 | 1973-06-18 | Rockwool Ab | METHOD AND SYSTEM FOR MANUFACTURING A MINERAL WOOL LAMINATE PRODUCT AND FOR MAKING IT COHERENT |
| SE441764B (en) * | 1982-10-11 | 1985-11-04 | Gullfiber Ab | Insulation sheet and method of producing similar |
| CA1209893A (en) * | 1983-10-24 | 1986-08-19 | Neil M. Cameron | Reoriented glass fiber board product and method and apparatus for making same |
| DE3501897A1 (en) * | 1985-01-22 | 1986-07-24 | Bayer Ag, 5090 Leverkusen | Process for producing a multi-layer fibre mat |
-
1990
- 1990-12-07 DK DK291590A patent/DK165926B/en not_active Application Discontinuation
-
1991
- 1991-12-06 SK SK562-93A patent/SK282244B6/en not_active IP Right Cessation
- 1991-12-06 WO PCT/DK1991/000383 patent/WO1992010602A1/en active IP Right Grant
- 1991-12-06 DE DE69104730T patent/DE69104730T2/en not_active Expired - Lifetime
- 1991-12-06 CA CA002095532A patent/CA2095532C/en not_active Expired - Lifetime
- 1991-12-06 ES ES92901216T patent/ES2062884T3/en not_active Expired - Lifetime
- 1991-12-06 AU AU90805/91A patent/AU9080591A/en not_active Abandoned
- 1991-12-06 PL PL91299427A patent/PL168628B1/en unknown
- 1991-12-06 EP EP92901216A patent/EP0560878B1/en not_active Expired - Lifetime
- 1991-12-06 AT AT92901216T patent/ATE113087T1/en not_active IP Right Cessation
-
1993
- 1993-06-03 CZ CZ931067A patent/CZ282594B6/en not_active IP Right Cessation
- 1993-06-04 FI FI932566A patent/FI112953B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| CZ106793A3 (en) | 1993-11-17 |
| FI112953B (en) | 2004-02-13 |
| CA2095532A1 (en) | 1992-06-08 |
| DE69104730T2 (en) | 1995-05-04 |
| CZ282594B6 (en) | 1997-08-13 |
| ES2062884T3 (en) | 1994-12-16 |
| SK282244B6 (en) | 2001-12-03 |
| WO1992010602A1 (en) | 1992-06-25 |
| PL168628B1 (en) | 1996-03-29 |
| EP0560878A1 (en) | 1993-09-22 |
| EP0560878B1 (en) | 1994-10-19 |
| FI932566A0 (en) | 1993-06-04 |
| AU9080591A (en) | 1992-07-08 |
| DK291590D0 (en) | 1990-12-07 |
| DK291590A (en) | 1992-06-17 |
| SK56293A3 (en) | 1994-05-11 |
| FI932566A (en) | 1993-06-04 |
| ATE113087T1 (en) | 1994-11-15 |
| DE69104730D1 (en) | 1994-11-24 |
| DK165926B (en) | 1993-02-08 |
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