FI85034C - Method and apparatus for treating a mineral fiber web - Google Patents

Method and apparatus for treating a mineral fiber web Download PDF

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Publication number
FI85034C
FI85034C FI901486A FI901486A FI85034C FI 85034 C FI85034 C FI 85034C FI 901486 A FI901486 A FI 901486A FI 901486 A FI901486 A FI 901486A FI 85034 C FI85034 C FI 85034C
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Finland
Prior art keywords
web
conveyor
track
speed
members
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FI901486A
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Finnish (fi)
Swedish (sv)
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FI901486A (en
FI85034B (en
FI901486A0 (en
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N Henning Laur
Matti Unkuri
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Partek Ab
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Publication of FI901486A0 publication Critical patent/FI901486A0/en
Priority to FI901486A priority Critical patent/FI85034C/en
Priority to CA002078988A priority patent/CA2078988A1/en
Priority to JP91505755A priority patent/JPH05506891A/en
Priority to EP91905949A priority patent/EP0521905A1/en
Priority to PCT/FI1991/000078 priority patent/WO1991014816A1/en
Priority to SU915053204A priority patent/RU2054067C1/en
Priority to CS91817A priority patent/CZ279379B6/en
Publication of FI901486A publication Critical patent/FI901486A/en
Application granted granted Critical
Publication of FI85034B publication Critical patent/FI85034B/en
Publication of FI85034C publication Critical patent/FI85034C/en
Priority to NO92923629A priority patent/NO923629L/en

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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-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
    • D04H1/42Non-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
    • D04H1/4209Inorganic fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-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
    • D04H1/42Non-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
    • D04H1/4209Inorganic fibres
    • D04H1/4218Glass fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-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
    • D04H1/42Non-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
    • D04H1/4209Inorganic fibres
    • D04H1/4218Glass fibres
    • D04H1/4226Glass fibres characterised by the apparatus for manufacturing the glass fleece
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70Non-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
    • D04H1/72Non-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
    • D04H1/736Non-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 characterised by the apparatus for arranging fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70Non-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
    • D04H1/74Non-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)

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)

Description

85034 Förfarande och anordning för behandling av en mineralfiber- bana Föreliggande uppfinning avser ett förfarande och en anordning för behandling av en mineralfiberbana för omorientering av fibrerna i banan, genom successiv ändring av banans has-tighet under dess transport genom en transportanordning, varvid hastighetsändringen av banan utförs genom att brin-ga banan i kontakt med minst tvä i banans längdriktning sett eftervarandra anbrdnade element.The present invention relates to a method and apparatus for treating a mineral fiber web for reorienting the fibers in the web, by successively changing the speed of the web during its transport through a conveying device, wherein the velocity change of the web is performed by bringing the web into contact with at least two longitudinally arranged elements in the longitudinal direction of the web.

Mineralullsprodukter av glasulls-, stenulls- och slaggulls-typ, är de mest kända och använda produkterna säväl för vär-meisolering som akustisk isolering.Mineral wool products of glass wool, stone wool and slag gold type, are the most well known and used products for heat insulation as well as acoustic insulation.

Dessa produkter framställs allmänt sä, att rämaterialet smältes, mineralsmältan omvandlas tili fibrer t.ex. genom att föra den i en spinnanordning, som kan bestä av ett fler-tal roterande hjul, de bildade fibrerna transporteras med en luftström frän spinnanordningen och uppsamlas pä en trans-portör i form av en fiberbana. Uppsamlingen kan ske antingen sä att fibrerna uppsamlas pä transportören tili en bana med önskad sluttjocklek, eller genom att bilda en sk. primärbana genom att samla ett tunt lager fibrer och sedan, t.ex. med hjälp av en pendeltransportör, vika denna primärbana tili en sekundärbana med önskad tjocklek.These products are generally manufactured such that the raw material is melted, the mineral melt is converted into fibers e.g. by passing it into a spinning device, which can consist of a plurality of rotating wheels, the formed fibers are transported with an air stream from the spinning device and collected on a conveyor in the form of a fibrous web. The collection can take place either so that the fibers are collected on the conveyor to a web with the desired final thickness, or by forming a so-called. primary web by collecting a thin layer of fibers and then, e.g. by means of a shuttle conveyor, fold this primary web into a secondary web of the desired thickness.

Vid nägon tidpunkt av framställningen av banan impregneras denna med ett lämpligt bindemedel, t.ex. ett harts, vilket i ett slutskede av banans behandling härdas medelst värme, t.ex. i en härdugn, varvid fibrerna fixeras tili varandra under bildning av en formstabil kontinuerlig bana av önskad ’ täthet och tjocklek. Härefter skärs banan tili önskat for- mat, antingen som skivprodukter eller rullprodukter, som där-efter förpackas eller vidareförädlas.At some point in the preparation of the web, it is impregnated with a suitable binder, e.g. a resin which is cured at a final stage of the web treatment by heat, e.g. in a hardening furnace, wherein the fibers are fixed to each other to form a stable, continuous web of the desired density and thickness. Next, the web is cut to the desired format, either as disc products or roll products, which are then packaged or further processed.

2 850342 85034

Vid uppsamlingen av fibrerna frän spinnanordningen, antingen i form av en primSrbana, eller i dess slutliga tjocklek, lSgger sig fibrerna pä transportören i huvudsak i ett plan som Sr parallellt med transportören, dvs. endast en liten mSngd av fibrerna intar en riktning mer eller mindre vinkelrSt mot transportörens plan. Detta fenomen Mr till fördel i vissa tillSmpningsomrSden, eftersom dylika produkter uppvi-sar goda elastiska egenskaper, men Sr till stor nackdel i andra. Speciellt resulterar denna uppbyggnad hos banan i dS-liga hSllfasthetsegenskaper i en riktning vinkelrät mot ba-nans plan, varför dylika produkter inte kan användas i kon-struktioner som utsStts för stor mekanisk belastning, t.ex. i golv, eller i tak som belastas.In collecting the fibers from the spinning device, either in the form of a primary web, or in its final thickness, the fibers settle on the conveyor essentially in a plane which is parallel to the conveyor, ie. only a small amount of the fibers take a direction more or less angular to the plane of the conveyor. This phenomenon is advantageous in some applications, as such products exhibit good elastic properties, but are of great disadvantage in others. In particular, this structure of the web results in dS-strength properties in a direction perpendicular to the plane of the web, so such products cannot be used in structures subjected to excessive mechanical stress, e.g. in floors, or in roofs that are loaded.

Ett sStt att uppnS tillrScklig mekanisk hSllfasthet i riktning mot banans plan Sr att öka banans volymvikt, dvs. tSt-het, vilket kan ske genom att öka fibermSngden, eller i vissa fall bindemedelsmSngden. Tillverkningskostnaderna Sr emellertid direkt proportionella mot fibervikten, varför en ökning av hällfastheten genom ökning av fibermSngden i vissa fall kan vara ekonomiskt oacceptabel.One way to achieve sufficient mechanical strength in the direction of the web's plane is to increase the web's volume weight, ie. tSt-hot, which can be done by increasing the amount of fiber, or in some cases the amount of binder. However, the manufacturing costs are directly proportional to the weight of the fiber, which is why an increase in the pour strength through an increase in the fiber volume may in some cases be economically unacceptable.

Ökningen av hällfastheten i en riktning vinkelrSt mot banans pian kan ocksä ästadkommas genom att Sndra riktningen hos fibrerna i banan sä att en större del av dessa bringas i en riktning som avviker frSn banans pian. Detta kan ästadkommas pä flera sStt.The increase in pouring strength in a direction perpendicular to the web's path can also be achieved by changing the direction of the fibers in the web so that a greater part of them is brought in a direction that deviates from the web's path. This can be achieved in several ways.

Man kan t.ex. skSra banan i strimlor, vilkas bredd Sr den-samma som den önskade mattans tjocklek. Strimlorna vSnds 90° och limmas ihop igen tili en sk. lamellmatta, vars fiber-riktning tili övervSgande del Sr vinkelrSt mot mattans huvudytor. Ett exempel pä detta förfaringssStt anges i EP A 0 000 378. Dylika lamellprodukter rnäste emellertid tillverkas i en speciell efterbehandlings- eller förSdlings-linje med ätföljande tillSggskostnader.One can, for example, Cut the web into strips whose width is the same as the desired mat thickness. The strips are turned 90 ° and glued back together into a so-called. lamella mat, whose fiber direction to the predominant part is perpendicular to the main surfaces of the mat. An example of this process set is given in EP A 0 000 378. However, such lamella products are next manufactured in a special finishing or processing line with subsequent supplementary costs.

3 850343 85034

Man kan ocksä tillverka en matta med sä gott som samma egenskaper som hos lamellmattan utan skärning och limning, genom att korrugera fiberbanan ρέ lämpligt sätt, komprimera den korrugerade banan till önskad täthet och härda den. Ett dylikt förfarande beskrivs t.ex. i den amerikanska pa-tentskriften US A 1,656,828 (fig. 6). Även i denna produkt är fiberriktningen till övervägande del vinkelrät mot banans plan. Veckbildningen p& banans ytor medför dock nackdelar. Den sänker böjhällfastheten i banans längdriktning samtidigt som veck är störande om skivan som sädan skall användas som akustikskiva. Säväl lamellprodukterna som de korrugerade produkterna uppvisar upp till 10% sämre värmeisolerings-förmäga jämfört med konventionella skivprodukter.It is also possible to make a mat with virtually the same properties as the laminate mat without cutting and gluing, by corrugating the fiber web ρέ appropriately, compressing the corrugated web to the desired density and curing it. Such a process is described e.g. in U.S. Patent No. US 1,656,828 (Fig. 6). Also in this product the fiber direction is predominantly perpendicular to the plane of the web. However, the fold formation on the surfaces of the web presents disadvantages. It lowers the flexural strength in the longitudinal direction of the track, while at the same time folds are disruptive to the disc which the seed is to be used as acoustic disc. Even the slat products as the corrugated products exhibit up to 10% poorer thermal insulation capacity compared to conventional sheet products.

Ett tredje sätt att ändra den huvudsakliga fiberriktningen i banan är beskrivet i DE A 16 35 620. Enligt detta förfarande uppbromsas banans transporthastighet mellan tvä efterva-randra följande transportörer genom att den i transportrikt-ningen sett bakre transportören ges lägre hastighet än den främre. Denna uppbromsning medför en längskomprimering med en omorientering av fibrerna inom banan, utan veckbildning pä ytan. Med förfarandet uppnäs bra resultat vad gäller den slutliga produktens bäde mekaniska och isolerande egenskaper om komprimeringsgraden, dvs. hastighetsminskningen hos banan under behandlingen, hSlls under cirka 30%. Om komprimeringsgraden är högre, börjar veckbildning uppstä pä banans ytor. Denna nackdel kan emellertid lätt undvikas om proce-duren upprepas, dvs flera komprimeringssteg utförs efter varandra, vilket förfarande även är föreslaget i FI-patentansökan 84 2734.A third way of changing the main fiber direction in the web is described in DE A 16 35 620. According to this method, the conveying speed of the web between two subsequent conveyors is slowed down by giving the lower conveyor speed seen in the transport direction lower than the front one. This braking results in longitudinal compression with a reorientation of the fibers within the web, with no creasing on the surface. The method achieves good results with regard to the final product bed's mechanical and insulating properties on the degree of compression, ie. the velocity decrease of the web during treatment is kept below about 30%. If the compression rate is higher, folding begins to build up on the surface of the web. However, this disadvantage can easily be avoided if the procedure is repeated, ie several compression steps are performed one after the other, which is also proposed in FI patent application 84 2734.

I ovan beskrivna förfarande sker alltsä komprimeringen i en zon av banan som ligger framför den bakre, längsammare : transportören, och som sträcker sig rätlinjigt över banans bredd. inom denna zon sker en omorientering av fibrerna täm-ligen okontrollerat och den styrs endast av den bakre trans- 4 85034 portörens mynning, som utgör uppbromsningsplanet för banan, samt av eventuella styrplätar anordnade ovanom och under hanan, vilka plätar hindrar banan frän att svälla upp mer än önskat. Dessa plätar deltar inte i själva omorienteringen av fibrerna. Nägon nämnvärd komprimering sker inte heller inom själva transportanordningen, utan denna fungerar närmast som en stabiliseringszon efter den utförda, chockartade kompri-meringen. Om en högre komprimeringsgrad önskas, behövs en utrymmeskrävande anläggning, vilken trots allt inte möjlig-gör nägon noggrannare kontroll över behandlingsförloppet.Thus, in the above-described method, the compression takes place in a zone of the web which lies in front of the rear, slower: conveyor, and which extends rectilinear over the width of the web. within this zone, the reorientation of the fibers takes place fairly uncontrolled and is controlled only by the orifice of the rear conveyor, which constitutes the braking plane of the web, and by any guide plates arranged above and below the male, which plaque prevents the web from swelling up. more than desired. These plaques do not participate in the actual reorientation of the fibers. Also, no significant compression takes place within the transport device itself, but it acts almost as a stabilization zone after the shock-like compression. If a higher degree of compression is desired, a space-intensive system is needed, which, after all, does not allow any more accurate control over the treatment process.

Föreliggande uppfinning har som ändamäl att övervinna de olägenheter som hänför sig tili de kända anordningarna, spe-ciellt tili den okontrollerade behandlingen av banan i ett fätal kraftiga, över banans bredd verkande enskilda stationer. I förfarandet och anordningen enligt uppfinningen sker det nämligen en kontrollerad och finstrukturerad om-orientering av fibrerna i banan som en följd av en väsentli-gen kontinuerligt styrd hastighetsändring av banan, utan veckbildning och i ett arbetsmoment, som enkelt kan införli-vas i befintliga tillverkningslinjer.The present invention has as its object to overcome the disadvantages associated with the known devices, in particular with the uncontrolled treatment of the web in a few powerful single station operating across the width of the web. Namely, in the method and apparatus of the invention, there is a controlled and fine-structured re-orientation of the fibers in the web as a result of a substantially continuous controlled rate change of the web, without folding and in a work step that can be easily incorporated into existing production lines. .

Detta ästadkommes med förfarandet enligt uppfinningen vilket kännetecknas av att de i ingressen till patentkravet 1 an-förda elementens verkningsomräden mot banan överlappar var-andra.This is achieved by the method according to the invention, characterized in that the areas of operation of the elements mentioned in the preamble of claim 1 overlap each other.

Hastighetsändringen av banan över alla element är företrä-desvis negativ, dvs. banans utgängshastighet fr&n det sista elementet är lägre än dess hastighet före det första elemen-tet.The velocity change of the web over all elements is preferably negative, i.e. the exit velocity of the web from the last element is lower than its velocity before the first element.

Enligt en ytterligare föredragen utföringsform är elementen sä utformade och anordnade i förhällande tili varandra att den gräns eller gränszon där ett elements päverkan mot banan är större än den av det intilliggande elementet, utgörs av 5 85034 en, över banans bredd sig sträckande väsentligen vägformig linje.In a further preferred embodiment, the elements are so formed and arranged relative to each other that the boundary or boundary zone where an element's impact on the web is greater than that of the adjacent element is constituted by a substantially road-shaped line extending over the width of the web.

Det nämnda elementet utgörs företrädesvis av ett axelpar som sträcker sig tvärs Over banan, med en axel pä vardera si-dan av banan som roterar mot varandra. Axlarna uppvisar me-del som kommer i kontakt med banan och päverkar banans fram-föringshastighet, dvs. beroende pä axlarnas rotationshastig-het i förhällande tili banans framföringshastighet kan de verka uppbromsande eller accelererande pS banan, med en om-orientering av fibrerna som följd. Axlarna är sä anordnade att när banan förs genom ett flertal eftervarandra anordnade element, verkningsomrädena mot banan av tvä efter varandra anordnade element överlappar eller ingriper i varandra. Det är denna överlappning av elementens verkningsomräden, dvs. den kontinuerliga päverkan av elementen mot banan, som antas ge upphov tili det fördelaktiga slutresultatet, i motsats tili den chockartade stötvisa behandlingen enligt den kända tekniken.Said element is preferably a shaft pair extending across the web, with a shaft on each side of the web rotating towards each other. The shafts have means which come into contact with the web and affect the web's speed of transmission, ie. Depending on the rotational speed of the shafts in relation to the conveying speed of the web, they may act as the slowing or accelerating pS web, with a reorientation of the fibers as a result. The shafts are arranged so that when the web is passed through a plurality of successively arranged elements, the areas of action against the web of two consecutively arranged elements overlap or engage one another. It is this overlap of the operating ranges of the elements, ie. the continuous impact of the elements on the web, which is believed to give rise to the advantageous end result, as opposed to the shock-like shock treatment of the prior art.

För att bättre förstä uppfinningen kan man tänka sig att den del av banan, som är under behandling, är uppdelad i ett an-tal behandlings- eller omorienteringszoner, vilka sträcker sig Over banans bredd. En behandlingszon kan definieras som ett omräde där ett element har ett större inflytande pS banan än det eller de intilliggande elementen. Banans framföringshastighet mitt för ett element är helt bestämt av sag-da element, men inflytandet pä framföringshastigheten över-gär därefter successivt tili nästa element. Vid nägon punkt mellan dessa element bestäms hastigheten mera av det ena elementet än det andra. Dessa mera eller mindre teoretiska _ punkter definierar en linje, som inte nödvändigtvis är rät, och som sträcker sig tvärs Over banan. Denna linje definie-: rar i sin tur gränsen mellan tvä behandlingszoner.In order to better understand the invention, it is conceivable that the portion of the web under treatment is divided into a number of treatment or reorientation zones extending over the width of the web. A treatment zone can be defined as an area in which an element has a greater influence on the path or path than the adjacent element (s). The web forward speed of one element is entirely determined by said element, but the influence on the speed of transmission then gradually transitions to the next element. At some point between these elements, the velocity is more determined by one element than the other. These more or less theoretical points define a line which is not necessarily straight and extends across the path. This line, in turn, defines the boundary between two treatment zones.

Eftersom, vid behandlingen enligt uppfinningen, varje elements verkningsomrSde överlappar eller griper in i intillig- 6 85034 gande elements verkningsomrSde, befinner sig varje tvSrsnitt av banan alltid i nägon behandlingszon, dSr den Mr utsatt för och päverkad av minst ett element. SS erhSlles den ovan nSmnda finstrukturerade och "varsamma" omorienteringen av fibrerna i banan.Since, in the treatment according to the invention, each element's area of operation overlaps or intervenes in the area of adjacent elements, each cross-section of the web is always in one treatment zone, where it is exposed and affected by at least one element. SS, the above-mentioned fine-structured and "gentle" reorientation of the fibers in the web is obtained.

Genom att utforma elementen sä att de bildar diskreta kon-taktomrSden med banan i en riktning tvärs över banan, riktas deras pSverkan mot banan inte enbart i banans rörelserikt-ning, utan även i en riktning mer eller mindre vinkelrSt mot banans rörelseriktning, dvs. i en riktning Sver banans bredd. Dä dessa kontaktomrSden anordnas i sidled förskjutna i förhällande till varandra i banans transportriktning, kom-mer grSnsen mellan tvS elements verkningsomrSden att bilda en vSsentligen vägformig linje, varvid ytterligare fördelar uppnSs. Om banans hastighet vid tvä eftervarandra följande kontaktomräden 3r olika, uppstär det skjuvkrafter i banan, vilka Sr riktade bäde framSt och bakSt, med Sven sidledes, i en riktning ut mot banans kanter. Detta medför jSmnare bear-betning av fiberbanan i alia dess dimensioner och ger dSrmed bSttre böjhSllfasthet St produkten Sn vad som värit möjligt med de tidigare kSnda lösningarna. Genom att variera kontakt-omrSdenas storlek, inbördes 13ge, elementens tryckkraft mot banan och storleken av banans hastighetsSndring, kan behand-lingen styras noggrant och i enlighet med önskat resultat.By designing the elements such that they form discrete contact areas with the web in a direction across the web, their effect on the web is directed not only in the direction of movement of the web, but also in a direction more or less perpendicular to the direction of movement of the web, ie. in one direction Sver width. As these contact areas are arranged laterally offset relative to each other in the direction of transport of the web, the boundary between the operating areas of the two elements will form a substantially road-shaped line, whereby further advantages are achieved. If the velocity of the web at two successive contact areas 3 is different, the shear forces in the web which Sr directed the front and rear, with Sven sideways, increase in a direction towards the edges of the web. This results in smoother machining of the fiber web in all its dimensions and thus gives better flexural strength to the product than what has been possible with the previously known solutions. By varying the size of the contact areas, each other 13 g, the compressive force of the elements against the web and the size of the web speed change, the treatment can be controlled accurately and in accordance with the desired result.

FöretrSdesvis underkastas banan en behandling över ett fler-tal, t.ex. 4-12 element. Enligt en utföringsform av uppfin-ningen underkastas banan en hastighetsminskning över hela transportanordningens ISngd, vilken minskning företrSdesvis Sr kontinuerlig och likformig, dvs. det sker en lika stor ’ hastighetsminskning frän element till element, som företrSPreferably, the web is subjected to a treatment over a plurality, e.g. 4-12 element. According to one embodiment of the invention, the web is subjected to a speed decrease over the entire length of the conveyor device, which reduction is preferably continuous and uniform, ie. there is an equal reduction in speed from element to element, as preferred

desvis Sr cirka 10-20%. HastighetsSndringen behöver dock inte vara jSmn utan den kan med fördel vara olika stor i olika skeden av behandlingen. Hastighetsminskningen frSn element till element kan sSlunda vara mindre i början och 7 85034 större mot slutet av behandlingen, eller sli kan hastighets-skillnaden mellan tvä efter varandra följande zoner vara väsentligt större än mellan övrlga zoner. En dylik kraftiga-re behandling sker dä med fördel i den senare delen av anordningen. Det är emellertid även möjligt att öka hastig-heten av banan i nägon eller nligra av behandlingszonerna, förutsatt att behandlingen leder tili en slutprodukt med omorlenterade fibrer.about 10-20%. However, the speed change does not have to be equal, but it can advantageously be different at different stages of the treatment. Thus, the rate decrease from element to element may be smaller at the beginning and greater at the end of the treatment, or the rate difference between two successive zones may be substantially greater than between other zones. Such a more powerful treatment is advantageous there in the latter part of the device. However, it is also possible to increase the velocity of the web in any or any of the treatment zones, provided that the treatment leads to a final product with unpainted fibers.

En godtagbar produkt, utan veckbildning, erhälls med förfa-randet enligt uppfinningen om banan utsätts för en behandling som leder till varierande komprimeringsgrader, men företrä-desvis används en komprimeringsgrad av cirka 2:1 - 10:1, speciellt 3:1 - 6:1, vilket motsvarar en hastighetsminsk-ning i procent av cirka 50-90%, speciellt cirka 70-80%.An acceptable product, without folding, is obtained by the method of the invention if the web is subjected to a treatment which results in varying degrees of compression, but preferably a compression ratio of about 2: 1 to 10: 1, especially 3: 1 to 6: 1, which corresponds to a speed reduction as a percentage of about 50-90%, especially about 70-80%.

Enligt en föredragen utföringsform underkastas banan före behandlingen en förkomprimering vinkelrät mot banans huvud-plan tili en tjocklek understigande banans tjocklek efter behandlingen. Genom att förkomprimera banan, exempelvis tili cirka 70% av sluttjockleken, och liitä den expandera under behandlingen, kan man utföra en större komprimering utan att förorsaka olikformigheter i banans ytskikt resp. innerskikt, dvs. uppkomst av en sk. pilformig fiberstruktur hos ett tvärsnitt genom produkten. Detta har värit ytterli-gare ett problem vid stor komprimering enligt de kända för-farandena.In a preferred embodiment, the web is pre-compacted perpendicular to the main plane of the web prior to the treatment to a thickness less than the web thickness after the treatment. By pre-compressing the web, for example to about 70% of the final thickness, and allowing it to expand during the treatment, a greater compression can be performed without causing disparities in the surface layer of the web and, respectively. inner layer, ie the emergence of a so-called. arrow shaped fiber structure of a cross section through the product. This has become a further problem with large compression according to the known procedures.

Uppfinningen avser även en anordning för att genomföra för-farandet. Anordningen uppvisar i sin enklaste form en trans-portanordning som omfattar tvä, mot varandra anordnade transportörer, mellan vilka fiberbanan förs, varvid vardera transportören omfattar minst tvä med olika rotationshastig-het drivbara axlar, vilka bildar sinsemellan axelpar och varvid axlarna uppvisar organ avsedda att bringas i kontakt med banans mot respektive transportör vända yta, och axelpa-rens verkningsomrliden överlappar varandra.The invention also relates to a device for carrying out the process. The device has in its simplest form a conveying device comprising two conveyors arranged against each other, between which the fiber web is moved, each conveyor comprising at least two rotational shafts driven at different rotational speeds, forming between themselves shaft pairs and the shafts having means intended to be brought in contact with the surface of the web facing the respective conveyor, and the axis of action of the shaft pair overlap.

β 85034β 85034

Axlarna i en transporter kan drivas med olika rotationshas-tighet, medan ett axelpar, som bestär av de mot varandra anordnade axlarna i olika transportörer, alltid drivs med samma hastighet, men i motsatt riktning.The shafts of a conveyor can be driven at different rotational speeds, while a shaft pair consisting of the shafts arranged against each other in different conveyors is always driven at the same speed, but in the opposite direction.

Företrädesvis uppbär axeln ett flertal, pä axeln med inbör-des mellanrum anordnade organ, vilka pä en axel är riktade mot och skjuter in i mellanrummen mellan organen pä en in-tilliggande axel. Enligt en utföringsform bildar organen i en axel i den ena transportören ett nyp för banan med mots-varande organ i en axel i den andra transportören, men de kan ocksä vara riktade mot mellanrummen mellan organen pä den sistnämnda axeln.Preferably, the shaft carries a plurality of interposed members on the shaft, which on one shaft are directed towards and project into the interstices between the members on an adjacent shaft. According to one embodiment, the members of a shaft in one conveyor form a nip for the web with corresponding members of a shaft of the other conveyor, but they may also be directed to the spaces between the members of the latter shaft.

Företrädesvis innehäller transportanordningen 4-12 axlar i vardera rulltransportören bildande alltsä lika mänga axelpar. De i kontakt med banan kommande organen kan ges god-tycklig lämplig utformning, de kan t.ex. ges formen av skov-lar, nälar, skivor, flänsar eller liknande, eller de kan formas som över banans bredd med inbördes mellanrum anordnade, i banans längdriktning sig sträckande korta ändlösa transportband, och de kan uppvisa varierande friktionsökande formationer, t.ex. dubbar eller liknande.Preferably, the conveying device contains from 4 to 12 shafts in each roller conveyor thus forming equal numbers of shaft pairs. The organs coming into contact with the web may be given any suitable design, for example. the shape of blades, rivets, discs, flanges or the like, or they may be formed as spaced apart across the width of the web, extending short endless conveyor belts longitudinally, and may exhibit varying friction-increasing formations, e.g. studs or the like.

För att möjliggöra en omställning av anordningen för fram-ställning av produkter av olika typ är det fördelaktigt att axlarna är försedda med medel för oberoende variation av ax-larnas rotationshastighet. Drivanordningarnas utformning är för fackmannen i och för sig känd teknik.In order to enable an adjustment of the device for making products of different types, it is advantageous for the shafts to be provided with means for independent variation of the rotational speed of the shafts. The design of the drive devices is well known to those skilled in the art.

Transportörerna kan ytterligare vara försedda med i och för sig kända medel för inställning av avständet och/eller av den inbördes lutningen mellan transportörerna. Genom att behandlingen i dylika fall kan utföras under samtidig tjocklekskomprimering eller -expandering av banan, kan om-orienteringsförhällandena för fibrerna ytterligare modifie- 9 85034 ras och behandlingen därmed anpassas för mycket varierande produkttyper. Avständet och/eller lutningsgraden kan Sven varieras utmed transportanordningens ISngd.The conveyors may further be provided with means known per se for adjusting the distance and / or the mutual inclination between the conveyors. In such cases, the treatment can be carried out during simultaneous thickness compression or expansion of the web, the reorientation conditions of the fibers can be further modified and the treatment thereby adapted for very different product types. The distance and / or the degree of slope can be varied along the transport device's ISngd.

För att ytterllgare illustrera uppfinningen hänvisas i det följande till bifogade ritning, i vilken figur 1 schematiskt visar en anordning för framställning av en fiberbana, vilken inkluderar en anordning för behandling av banan enligt uppfinningen, figur 2 schematiskt visar principen för en utföringsform av samverkande axlar i en rulltransportör, i planvy, figur 3a visar utföringsformen enligt figur 2, sedd i banans transportriktning, och figur 3b samma utföringsform sedd frän sidan, figur 4 visar en alternativ utföringsform av de för kontakt med banan avsedda organen, och figurerna 5a - 5d visar olika hastighetsprofiler för banan under dess transport genom transportanordningen.In order to further illustrate the invention, reference is made in the following to the accompanying drawing, in which: Figure 1 shows schematically a device for producing a fiber web, which includes a device for processing the web according to the invention; Figure 2 schematically illustrates the principle of an embodiment of cooperating shafts in a roller conveyor, in plan view, figure 3a shows the embodiment according to figure 2, seen in the direction of transport of the web, and figure 3b the same embodiment seen from the side, figure 4 shows an alternative embodiment of the means for contact with the web, and figures 5a - 5d show different velocity profiles of the web during its transport through the conveyor.

Figur 1 visar schematiskt behandlingen av en fiberbana, vilken i form av en primärbana 1 leds frän en icke-visad spinn-anordning tili en pendeltransportör 2 och veckas tili en sekundärbana 3 av önskad tjocklek. Denna sekundärbana 3 leds -1- sedan in mellan tvä rullar 4, 4', vilka ästadkommer en för- komprimering av banan 3, i en riktning vinkelrät mot banans plan. I nypet 4, 4' komprimeras banan tili en tjocklek som understiger banans tjocklek efter behandlingen, och lämpli-·.* ' gen tili cirka 70% av banans sluttjocklek. Därefter leds ba- - nan lämpligen över styrorgan 5, 6, 7 in i en transport- , anordning för behandling enligt uppfinningen, vilken anord ning som helhet betecknats med hänvisningssiffran 8. Trans- ίο 8 5 034 portanordningen 8 uppvisar en Övre och en undre transportör 9 resp. 10, vilka vardera i den ifrägavarande utföringsfor-men uppvisar tolv rullar i form av kamaxlar, varvid tvä mit-temot varandra stäende kamaxlar 11 och 11', 12 och 12', etc. bildar ett kamaxelpar, som tillsammans begränsar nyp 11a, 12a etc. för banan. Enligt en föredragen utföringsform avtar transportörernas hastighet i banans rörelseriktning genom att kamaxelparen har stegvis avtagande rotationshastighet.Figure 1 shows schematically the treatment of a fiber web, which in the form of a primary web 1 is guided from a non-displayed spinning device to a pendulum conveyor 2 and folded into a secondary web 3 of the desired thickness. This secondary web 3 is then led between two rollers 4, 4 ', which effect a pre-compression of the web 3, in a direction perpendicular to the plane of the web. In the nip 4, 4 ', the web is compressed to a thickness less than the web thickness after treatment, and suitably to about 70% of the web's final thickness. Thereafter, the path is preferably passed over control means 5, 6, 7 into a transport device for processing according to the invention, which device as a whole is designated by the reference numeral 8. The transducer 8 5 034 gate device 8 has an upper and a lower conveyor 9 and 9 respectively. 10, each of which in the present embodiment has twelve rollers in the form of camshafts, two opposing camshafts 11 and 11 ', 12 and 12', etc. forming a camshaft pair which together limit nip 11a, 12a etc. for the track. According to a preferred embodiment, the speed of the conveyors decreases in the direction of movement of the web by the camshaft pair having a gradually decreasing rotational speed.

En lämplig hastighetsminskning mellan tvä eftervarandra föl-jande axlar är 10 - 20%. I föreliggande fall kan t.ex. de tvä första axelparen ha samma rotationshastighet som hastig-heten hos transportören före transportanordningen, medan hastigheten sedan stegvis minskas pä nämnda sätt hos efter-följande axlar och de sista fä axlarna i anordningen kan ges samma hastighet som transportören i härdugnen, som i figuren märkts med hänvisningssiffran 15. I härdugnen härdas och fi-xeras den slutliga produkten.A suitable rate decrease between two successive axes is 10-20%. In the present case, e.g. the two first shaft pairs have the same rotational speed as the speed of the conveyor prior to the conveying device, while the speed is then incrementally reduced in the manner of subsequent shafts and the last few shafts of the device can be given the same speed as the conveyor in the hardening furnace, as shown in the figure with reference numeral 15. The final product is cured and fixed in the furnace.

I figur 2 visas schematiskt hur kamaxlarna kan utformas och samverka i en transportör, sedda i planvy. Banans rörelseriktning mellan axlarna anges med en pii tili höger. I den föreliggande utföringsformen skjuter alltsä varje kamskiva 16 pä en kamaxel in i mellanrummet mellan tvä kamskivor 16' och 16" i den intilliggande kamaxeln. I föreliggande utföringsform uppvisar kamaxlarna ett centrumavständ (a) som är ungefär 70% av kamaxelskivornas skivdiameter, varvid skivor-nas bredd (b) är cirka 30% av centrumavständet, och mellanrummet (c) cirka 40 - 50% av centrumavständet. I figuren har med streckade linjer även antytts nypet 17 för nägra närlig-gande kamskivor. Kamaxelnypen ger alltsä i denna utföringsform upphov tili i huvudsak rätlinjiga kontaktomräden med en begränsad utsträckning i huvudsak i banans tvärriktning, varvid tvä eftervarandra följande kamaxelnyp ger upphov tili kontaktomräden i sick-sack-mönster över banans bredd.Figure 2 shows schematically how the camshafts can be designed and cooperate in a conveyor, seen in plan view. The direction of movement of the web between the axes is indicated by a right arrow. Thus, in the present embodiment, each cam disc 16 of a cam shaft projects into the space between two cam disks 16 'and 16 "of the adjacent cam shaft. In the present embodiment, the cam shafts have a center spacing (a) which is about 70% of the cam shaft disc diameter, The width (b) of the center is about 30% of the center distance, and the space (c) is about 40 - 50% of the center distance. In the figure, the nip 17 also indicates the nip 17 for some neighboring cam disks. substantially rectilinear contact areas with a limited extent substantially in the transverse direction of the web, two successive camshaft types giving rise to contact areas in zigzag pattern across the width of the web.

I figur 3a och 3b visas arrangemanget enligt figur 2 dels sett i banans rörelseriktning (3a) respektive sett frän si- n 85034 dan (3b). I figur 3a visar de heldragna linjerna den utfö-ringsformen av uppfinningen, där kamskivorna 16 1 vardera transportören är riktade raot varandra och bildar ett nyp 17. I samma figur 3a visas med streckade linjer även en alterna-tiv utföringsform, där kamskivorna i vardera transportören inte stSr mot varandra, utan en kamskiva i den ena transportören stär mot ett mellanrum mellan kamskivorna i den andra transportören. I figur 3b visas arrangemanget enligt figur 2 sett frän sidan.In Figures 3a and 3b the arrangement according to Figure 2 is shown partly in the direction of movement of the web (3a) and seen from page 85034 dan (3b) respectively. In Fig. 3a, the solid lines show the embodiment of the invention, in which the cam discs 16 1 each conveyor are directed at each other and form a nip 17. In the same Fig. 3a an alternate embodiment is shown, where the cam discs in each conveyor not facing each other, but a cam disk in one conveyor staring at a space between the cam discs in the other conveyor. Figure 3b shows the arrangement of Figure 2 seen from the side.

En ytterligare utföringsform för organen har angetts i figur 4, vilken visar en p£ en axel monterad skiva 16 vilken pS sin yttre periferi uppvisar ett flertal, runt omkretsen jämt fördelade flänsar 18.A further embodiment of the means is given in Figure 4, which shows a shaft mounted disc 16 whose pS has its outer periphery having a plurality of flanges 18 distributed around the circumference.

I figurerna 5a - 5d visas alternativa utföringsformer för banans hastighetsprofll under behandlingen enligt uppfinningen. Figur 5a visar det fall där banan underkastas en likformig hastighetsminskning Over alia element i anordnin-gen. Figur 5b visar äter igen det fall där hastighetsminsk-ningen är mindre i början av behandlingen, och större mot slutet, medan figur 5c visar det fall där den kraftigaste hastighetsändringen sker i mitten av behandlingen. Slutligen avser figur 5d det fall där hastigheten av banan även til-läts öka vid ett eller flera element.In Figures 5a - 5d, alternative embodiments of the web speed profile during the treatment according to the invention are shown. Figure 5a shows the case where the web is subjected to uniform speed reduction over all elements of the device. Figure 5b shows again the case where the rate decrease is smaller at the beginning of the treatment, and greater towards the end, while Figure 5c shows the case where the most rapid change in speed occurs in the middle of the treatment. Finally, Figure 5d refers to the case where the velocity of the web is also allowed to increase at one or more elements.

Claims (14)

1. Menetelmä mineraalikuituradan käsittelemiseksi kuitujen uudelleenorientoimiseksi radassa, muuttamalla suksessiivi-sesti radan nopeus, jolloin radan nopeuden muuttaminen suoritetaan saattamalla rata kosketukseen vähintään kahden, radan pituussuunnassa katsottuna peräkkäin järjestetyn elementin (11, 11' vast. 12, 12') kanssa, tunnettu siitä, että elementtien vaikutusalueet rataa vasten ovat limittäin toistensa suhteen.A method of treating a mineral fiber web to reorient fibers in a web by successively changing the web speed, the web speed being performed by contacting the web with at least two elements (11, 11 'and 12, 12') arranged in succession in the longitudinal direction of the web, characterized by that the areas of action of the elements against the path overlap with respect to each other. 2. Patenttivaatimuksen 1 mukainen menetelmä, tunnettu siitä, että radan nopeutta alennetaan niin että nopeuksien suhde käsittelyn alussa ja lopussa on noin 2:1 - noin 10:1, mieluimmin noin 3:1 - noin 6:1.A method according to claim 1, characterized in that the speed of the track is reduced so that the ratio of speeds at the beginning and end of the treatment is from about 2: 1 to about 10: 1, preferably from about 3: 1 to about 6: 1. 3. Patenttivaatimuksen 1 tai 2 mukainen menetelmä, tunnettu siitä, että raja jossa jonkin elementin vaikutus rataa vasten on suurempi kuin vieressä olevan elementin, muodostuu radan leveyden yli ulottuvasta, oleellisesti aaltomaisesta viivasta.Method according to Claim 1 or 2, characterized in that the boundary in which the action of an element against the track is greater than that of an adjacent element consists of a substantially wavy line extending over the width of the track. 4. Patenttivaatimuksen 3 mukainen menetelmä, tunnettu siitä, että kosketus radan ja yhden sanotun elementin välillä rajoittuu useisiin, keskenään erillisiin kontaktialueisiin, jotka ulottuvat radan yli, jolloin peräkkäin järjestettyjen elementtien kontaktialueet radan kanssa ovat sivusuunnassa siirretyt toisiinsa nähden.A method according to claim 3, characterized in that the contact between the track and one of said elements is limited to a plurality of separate contact areas extending over the track, the contact areas of the successively arranged elements with the track being laterally offset relative to each other. 5. Jonkin edellisistä patenttivaatimuksista mukainen menetelmä, tunnettu siitä, että radan paksuutta muutetaan suksessiivisesti käsittelyn aikana.Method according to one of the preceding claims, characterized in that the web thickness is changed successively during the treatment. 6. Jonkin edellisistä patentivaatimuksista mukainen menetelmä, tunnettu siitä, että radan nopeutta alennetaan suksessiivisesti käsittelyn aikana, jolloin nopeuden aleneminen kahden peräkkäisen elementin välillä on 10-20%. ie 85034Method according to one of the preceding claims, characterized in that the speed of the track is reduced successively during the treatment, the reduction in speed between two successive elements being 10-20%. 85034 BC 7. Laite mineraalikuituradan käsittelemiseksi kuitujen uudelleenorientoimiseksi radassa, muuttamalla radan nopeutta sen siirtyessä kuljetuslaitteen läpi, tunnettu siitä, että kuljetuslaite (8) käsittää kaksi, toisiaan vasten järjestettyä kuljetinta (9, 10), joiden välistä rata (3) kuljetetaan, jolloin kukin kuljetin käsittää ainakin kaksi, eri nopeudella pyöritettävää akselia (11, 12 vast. 11', 12'), jotka muodostavat keskenään akseliparit (11, 11' vast. 12, 12'), ja jolloin akselit käsittävät elimiä (16) joiden on tarkoitus tulla kosketukseen radan sanottua kuljetinta vasten käännetyn pinnan kanssa, ja akseliparien vaikutusalueet ovat limittäin toistensa suhteen.Apparatus for treating a mineral fiber web to reorient fibers in a web by changing the speed of the web as it passes through a conveying device, characterized in that the conveying device (8) comprises two opposed conveyors (9, 10) between which the web (3) is conveyed, each conveyor comprising at least two shafts (11, 12 and 11 ', 12') rotatable at different speeds, which form pairs of shafts (11, 11 'and 12, 12'), the shafts comprising members (16) intended to come into contact with the surface of the track facing said conveyor, and the areas of action of the pairs of axles overlap with respect to each other. 8. Patenttivaatimuksen 7 mukainen laite, tunnettu siitä, että akselit kannattavat joukon, etäisyydelle toisistaan järjestettyä elintä, jolloin toisella akselilla sovitetut elimet (16) ovat suunnatut saman kuljettimen viereisellä akselilla olevien elinten (16', 16") välissä olevia välitiloja kohti ja työntyvät näihin sisään.Device according to claim 7, characterized in that the axles support a plurality of spaced apart members, the members (16) arranged on the second axis being directed towards and projecting into the spaces between the members (16 ', 16 ") on the adjacent axis of the same conveyor. in. 9. Patenttivaatimuksen 8 mukainen laite, tunnettu siitä, että toisessa kuljettimessa olevan akselin (11) elimet (16) ovat suunnatut toisessa kuljettimessa olevan vastaavan akselin (11') vastaavia elimiä kohti muodostaen nipin rataa varten.Device according to claim 8, characterized in that the members (16) of the shaft (11) in the second conveyor are directed towards the respective members of the corresponding shaft (11 ') in the second conveyor, forming a nip for the track. 10. Patenttivaatimuksen 8 mukainen laite, tu n n e t t u siitä, että elimet (16) toisen kuljettimen akselilla (16) ovat suunnatut toisessa kuljettimessa olevan vastaavan akselin (11') vastaavien elimien välitiloja kohti.Device according to claim 8, characterized in that the members (16) on the shaft (16) of the second conveyor are directed towards the intermediate spaces of the respective members of the corresponding shaft (11 ') in the second conveyor. 11. Jonkin patenttivaatimuksista 7-10 mukainen laite, tunnettu siitä, että radan kanssa kosketukseen tulevat elimet ovat neuloja, lapioita, kampalevyjä, päättömiä kuljetushihnoja tai vastaavia, jotka voivat olla varustetut kitkaa lisäävillä muodostelmilla. 17 85034Device according to one of Claims 7 to 10, characterized in that the members which come into contact with the track are needles, shovels, comb plates, endless conveyor belts or the like, which can be provided with friction-increasing formations. 17 85034 12. Jonkin patenttivaatimuksista 7-11 mukainen laite, tunnettu siitä, että kummassakin kuljettimessa olevat akselit ovat varustetut elimillä akseleiden pyörimisnopeuden muuttamiseksi toisistaan riippumatta.Device according to one of Claims 7 to 11, characterized in that the shafts in each conveyor are provided with means for varying the rotational speed of the shafts independently of one another. 13. Jonkin patentivaatimuksista 7-12 mukainen laite, tunnettu siitä, että kuljettimet ovat varustetut elimillä kuljettimien keskinäisen etäisyyden ja/tai kaltevuuden säätämiseksi, jotka elimet sallivat etäisyyden ja/tai keskinäisen etäisyyden vaihtelemisen kuljetuslaitteen pituutta pitkin.Device according to one of Claims 7 to 12, characterized in that the conveyors are provided with means for adjusting the distance and / or inclination of the conveyors, which means allow the distance and / or the distance to be varied along the length of the transport device. 14. Jonkin patenttivaatimuksista 7-13 mukainen laite, tunnettu siitä, että siinä on laite (4, 4') ennen kuljetinta (8) radan puristamiseksi kokoon paksuuteen joka on pienempi kuin radan paksuus käsittelyn jälkeen.Device according to one of Claims 7 to 13, characterized in that it has a device (4, 4 ') before the conveyor (8) for compressing the web to a thickness which is less than the thickness of the web after treatment.
FI901486A 1990-03-26 1990-03-26 Method and apparatus for treating a mineral fiber web FI85034C (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FI901486A FI85034C (en) 1990-03-26 1990-03-26 Method and apparatus for treating a mineral fiber web
PCT/FI1991/000078 WO1991014816A1 (en) 1990-03-26 1991-03-22 Method and apparatus for the treatment of a mineral fibre felt
JP91505755A JPH05506891A (en) 1990-03-26 1991-03-22 Mineral fiber felt processing method and device
EP91905949A EP0521905A1 (en) 1990-03-26 1991-03-22 Method and apparatus for the treatment of a mineral fibre felt
CA002078988A CA2078988A1 (en) 1990-03-26 1991-03-22 Method and apparatus for the treatment of a mineral fibre felt
SU915053204A RU2054067C1 (en) 1990-03-26 1991-03-22 Method for production of felt from mineral fiber and device for its embodiment
CS91817A CZ279379B6 (en) 1990-03-26 1991-03-26 Process of treating felt and apparatus for making the same
NO92923629A NO923629L (en) 1990-03-26 1992-09-18 PROCEDURE AND APPARATUS FOR PREPARING A MINERAL FIBER FILTER

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Application Number Priority Date Filing Date Title
FI901486 1990-03-26
FI901486A FI85034C (en) 1990-03-26 1990-03-26 Method and apparatus for treating a mineral fiber web

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FI901486A0 FI901486A0 (en) 1990-03-26
FI901486A FI901486A (en) 1991-09-27
FI85034B FI85034B (en) 1991-11-15
FI85034C true FI85034C (en) 1992-02-25

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CA (1) CA2078988A1 (en)
CZ (1) CZ279379B6 (en)
FI (1) FI85034C (en)
RU (1) RU2054067C1 (en)
WO (1) WO1991014816A1 (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
DK1266991T3 (en) 1994-01-28 2012-11-26 Rockwool Int A mineral fiber board and a tubular insulating element
FI944215A (en) * 1994-09-13 1996-03-14 Paroc Oy Ab Insulation element and device for installing the insulation element
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
DE19860040A1 (en) 1998-12-23 2000-06-29 Gruenzweig & Hartmann Process for the production of mineral wool products bound with binder, device for carrying them out, mineral wool product produced thereby and composite mineral wool product produced thereby and use of these products
DE19919004A1 (en) * 1999-04-27 2000-11-02 Rockwool Mineralwolle Process and device for producing insulating materials from mineral fibers and insulating element from mineral fibers
FR2814474B1 (en) * 2000-09-27 2002-11-29 Saint Gobain Isover PROCESS AND ASSEMBLY FOR MANUFACTURING FELTS IN THE FORM OF MINERAL FIBERS
CZ306111B6 (en) * 2007-04-23 2016-08-10 Technická univerzita v Liberci Device for making fabric of defined thickness
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
CN115538040B (en) * 2022-09-26 2024-05-10 南京玻璃纤维研究设计院有限公司 Cotton spreading machine

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DE1635620A1 (en) * 1966-09-16 1971-03-25 Reichhold Albert Chemie Ag Improved continuously produced fibrous sheet from natural, synthetic and / or mineral fibers and processes for their production
FR2548695B1 (en) * 1983-07-07 1986-06-20 Saint Gobain Isover FORMATION OF FELTS WITH ISOTROPIC STRUCTURE

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CZ279379B6 (en) 1995-04-12
FI901486A (en) 1991-09-27
FI85034B (en) 1991-11-15
FI901486A0 (en) 1990-03-26
CA2078988A1 (en) 1991-09-27
RU2054067C1 (en) 1996-02-10
CS9100817A2 (en) 1991-10-15
JPH05506891A (en) 1993-10-07
EP0521905A1 (en) 1993-01-13
WO1991014816A1 (en) 1991-10-03

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