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NO165038B - MINERAL WOOL PRODUCT AND PROCEDURE FOR ITS MANUFACTURING. - Google Patents

MINERAL WOOL PRODUCT AND PROCEDURE FOR ITS MANUFACTURING. Download PDF

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Publication number
NO165038B
NO165038B NO874916A NO874916A NO165038B NO 165038 B NO165038 B NO 165038B NO 874916 A NO874916 A NO 874916A NO 874916 A NO874916 A NO 874916A NO 165038 B NO165038 B NO 165038B
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Norway
Prior art keywords
binder
accordance
mineral wool
sound
water glass
Prior art date
Application number
NO874916A
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Norwegian (no)
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NO874916L (en
NO874916D0 (en
NO165038C (en
Inventor
Per-Olof Lundquist
Original Assignee
Rockwool Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Rockwool Ab filed Critical Rockwool Ab
Publication of NO874916L publication Critical patent/NO874916L/en
Publication of NO874916D0 publication Critical patent/NO874916D0/en
Publication of NO165038B publication Critical patent/NO165038B/en
Publication of NO165038C publication Critical patent/NO165038C/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)
  • Building Environments (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Nonwoven Fabrics (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Paper (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Laminated Bodies (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Exhaust Silencers (AREA)

Abstract

A mineral wool body suited for use as a sound insulating body having the ability of damping or absorbing both high frequence and low frequence sound, and in which at least the largest portion of the surfaces of the mineral wool body which are exposed to said high frequence and low frequence sound is covered with a binder in such amount and by such application method that practically all surface fibres of the mineral wool body are bound to each other and still the binder does not provide an integral, unbroken film of binder. The binder preferably is a solution of an inflammable alkali silicate, especially water glass, and it is applied to the mineral wool body in an amount of 75-150 or preferably 95-140 g dry matter content/m<2> of the mineral wool body, whereupon the solvent is allowed to evaporate or dry, preferably at a temperature of less than 120 DEG C. The binder can be pre-polymerized so that the viscosity at 20 DEG C and a dry matter content of 50% is more than 300 mPa.s, and the binder is applied in a concentration of less than 40% or preferably less than 38% dry matter content.

Description

Oppfinnelsen gjeldet et mineralullprodukt, og nærmere bestemt et slikt produkt for lydabsorsjon, samt en framgangsmåte for tilvirkning av et slikt produkt. The invention concerned a mineral wool product, and more specifically such a product for sound absorption, as well as a method for manufacturing such a product.

Moderne bygninger, særlig store bygninger, er ofte forsynt med et omfattende og komplisert ventilasjonssystem. I bygninger med slike systemer er det viktig at en ikke hører lyder fra vifter eller fra luftstrømmen i ventilasjonskanalene. Det er også viktig at lyder, f.eks. musikk eller tale, ikke overføres fra et rom til et annet gjennom de vanlige ventilasjonskanalene. For å unngå slike problemer har det vanligvis vært nødvendig å forsyne ventilasjonssystemet med lydisolasjon, f.eks. ved å anordne lydabsorberende materiale i ventilasjonskanalene. 1 prinsipp kan dette utføres på to forskjellige måter: Ventilasjonskanalene eller ventilasjonsrørene er tilvirket av eller dekket med et lydabsorberende materiale, f.eks. filt eller plater av mineralull. Modern buildings, especially large buildings, are often equipped with an extensive and complicated ventilation system. In buildings with such systems, it is important that you do not hear sounds from fans or from the air flow in the ventilation ducts. It is also important that sounds, e.g. music or speech, is not transmitted from one room to another through the usual ventilation ducts. To avoid such problems, it has usually been necessary to provide the ventilation system with sound insulation, e.g. by arranging sound-absorbing material in the ventilation ducts. In principle, this can be done in two different ways: The ventilation ducts or ventilation pipes are made of or covered with a sound-absorbing material, e.g. felt or sheets of mineral wool.

Uet kan også utformes lydfeller i ventilasjonskanalene eller ventilasjonsrørene, f.eks. ved å anordne elementer i kanalene, hvis hovedformål er å dempe eller absorbere lyd som føres gjennom lufta i kanalene. LydCellene kan i sin tur være av to forskjellige typer, nemlig en type som avbøyer ventilasjonslufta en eller to ganger med lodeplater eller lydfeller som virket rettlinjet ("in-lin"), hvor lufta strømmer hovedsakelig rettlinjet gjennom en kanal med hovedsakelig konstant tverrsnittsareal, og hvor kanalveggene er framstilt av eller dekket med et lydabsorberende materiale. Sound traps can also be designed in the ventilation ducts or ventilation pipes, e.g. by arranging elements in the ducts, whose main purpose is to dampen or absorb sound carried through the air in the ducts. The Sound Cells can in turn be of two different types, namely a type that deflects the ventilation air once or twice with sound plates or sound traps that acted in a straight line ("in-lin"), where the air flows mainly in a straight line through a channel with a mainly constant cross-sectional area, and where the duct walls are made of or covered with a sound-absorbing material.

Særlig i det siste tilfellet er det stort behov for effektiv lydabsorpsjon. Ved hjelp av mineralull er det uten vanskelighet mulig å oppnå en effektiv absotbsjon av lyd med meget høye frekvenser, f.eks. over 1000 Hz, men en standard type av slike lydabsorberende materialer er imidlertid begrenset effektivt når det gjelder absorpsjon av lyd med lave frekvenser. Especially in the latter case, there is a great need for effective sound absorption. With the help of mineral wool, it is possible without difficulty to achieve an effective absorption of sound with very high frequencies, e.g. above 1000 Hz, however, a standard type of such sound-absorbing materials is limited in effectiveness in absorbing low-frequency sound.

Uet et kjent at evnen til mineralull til å absorbere lavfrekvent lyd kan brukes ved å gi mineralulla et overflatesjikt av et egnet materiale, f.eks. et tynt sjikt av plast. Dersom plasten er tilstrekkelig tynn og elastisk blir produktets evne til å absorbere lavfrekvent lyd drastisk øket, og fremdeles er evnen til å absorbere høyfrekvent lyd ikke It is not known that the ability of mineral wool to absorb low-frequency sound can be used by giving the mineral wool a surface layer of a suitable material, e.g. a thin layer of plastic. If the plastic is sufficiently thin and elastic, the product's ability to absorb low-frequency sound is drastically increased, and still the ability to absorb high-frequency sound is not

redusert i særlig utstrekning. reduced to a particular extent.

5 Mineralull-materialer av denne typen, med et overflatebelegg, har imidlertid betydelige ulemper. For det første er plastfoliene, som mineralulla er dekket med, brennbare. Dernest er det teknisk vanskelig å påføre 5 Mineral wool materials of this type, with a surface coating, have significant disadvantages, however. Firstly, the plastic films with which the mineral wool is covered are flammable. Secondly, it is technically difficult to apply

plastfilmen på mineralull, særlig på trange plasser, f.eks. på 10 de konkave innerflater til rørformete isolasjoner e.l. Formålet med oppfinnelsen er således å framskaffe en mineralull- isolasjon, med samme gode effekt som med plastfilm-belegg, men som kan utføres betydelig enklere, the plastic film on mineral wool, especially in tight spaces, e.g. on 10 the concave inner surfaces of tubular insulations etc. The purpose of the invention is thus to provide a mineral wool insulation, with the same good effect as with plastic film coating, but which can be carried out significantly more easily,

hurtigere og mere økonomisk. faster and more economical.

IB Oppfinnelsen er angitt i den karakteriserende del av patentkrav l. Ytterligere trekk ved mineralullegemet går fram av de uselvstendige kravene 2 til 4. Framgangsmåte for framstilling av oppfinnelsen er angitt i krav 5. Ytterligere IB The invention is stated in the characterizing part of patent claim l. Further features of the mineral ore body appear from the independent claims 2 to 4. The method of making the invention is stated in claim 5. Further

trekk ved framstillingen er angitt i de uselvstendige, kravene 20 6 til 10. features of the production are indicated in the independent claims 20 6 to 10.

1 henhold til den foreliggende oppfinnelsen blir mineralull-legemet belagt med en fortynnet bindemiddel-løsning i form av vannglass, som siden får tørke. To omstendigheter er 1 according to the present invention, the mineral wool body is coated with a diluted binder solution in the form of water glass, which is then allowed to dry. Two circumstances are

av avgjørende betydning ved mengde bindemiddel-løsning og 2b tilstanden til bindemiddel-løsningen: of decisive importance in the amount of binder solution and 2b the condition of the binder solution:

på ei side må mengden bindemiddel etc. være tilstrekkelig til å låse praktisk talt alle fibrene på overflata av minerallull-produktet, - på den andre sida må mengden bindemiddel ikke bli så 30 stor at det dannes en enhetlig, ubrutt film av bindemiddel over hele overflata. on the one hand, the amount of binder etc. must be sufficient to lock practically all the fibers on the surface of the mineral wool product, - on the other hand, the amount of binder must not be so large that a uniform, unbroken film of binder is formed over the entire surface .

Generelt er det ikke nødvendig å dekke overflata av hele produktet, fordi de flatene som ikke danner en direkte del av In general, it is not necessary to cover the surface of the entire product, because those surfaces that do not form a direct part of

ventilasjonskanalen ikke er utsatt for lyd og de kan derfor 3F> ikke absorbere ellet dempe lyden i kanalene. Det er derfor the ventilation duct is not exposed to sound and they cannot therefore absorb or dampen the sound in the ducts. That is why

tilstrekkelig å behandle bare de flatene av legemet som direkte avgrenser kanalen. Det kan også væte hensiktsmessig, sufficient to treat only those surfaces of the body that directly border the canal. It can also wet appropriately,

at enkelte deler av flatene som avgrenser kanalen blir holdt ubehandlet, slik at slike deler kan øke materialets evne til å absorbere de høyeste lydfrekvensene. 1 samsvar med oppfinnelsen blir legemenes flater dekket med et brannsikkert materiale, særlig med en alkalisilikat, såsom vannglass. Et egnet slikt stoff er tilgjengelig fra EKA under varemerket "Bindizil FK10". that certain parts of the surfaces that delimit the channel are left untreated, so that such parts can increase the material's ability to absorb the highest sound frequencies. In accordance with the invention, the surfaces of the bodies are covered with a fireproof material, in particular with an alkali silicate, such as water glass. A suitable such substance is available from EKA under the trademark "Bindizil FK10".

Vannglasset kan fortrinnsvis også være prepolymerisert eller det kan være behandlet på en annen måte, slik at det får en viskositet på minst 300 mPa.S ved 20°C og 50% tørtstoff innhold. Av brukstekniske grunner må tørrstoff innholdet ikke væte for høyt, og det holdes fortrinnsvis under 40%, fortrinnsvis under 38%. The water glass can preferably also be prepolymerized or it can be treated in another way, so that it has a viscosity of at least 300 mPa.S at 20°C and 50% solids content. For technical reasons, the dry matter content must not be too high, and it is preferably kept below 40%, preferably below 38%.

Uindemiddelmengden som påføres mineralullflata et av vesentlig betydning. På ei side bør mengden være tilstrekkelig til å binde alle løse ovetflatefibte, på den andte sida må ikke mengden væte så stot at bindemidlet danner et dekkende belegg. Praktiske undetsøkelset hat vist at mengden bindemiddel som påføtes materialet bøt væte mellom 75 og 150 gtam tøttstoff/m 2 mineralullflate, ellet fortrinnsvis mellom The amount of sealant that is applied to the mineral wool surface is of significant importance. On the one hand, the amount should be sufficient to bind all loose surface fibers, on the other hand, the amount must not be so wet that the binder forms a covering coating. Practical research has shown that the amount of binder that is applied to the material should be between 75 and 150 gtam töttstoff/m 2 mineral wool surface, or preferably between

2 95 og 140 g/m . 2 95 and 140 g/m .

Også tempetatuten undet tørkingen ellet fotdampingen av oppløsningsmidlet et viktig, slik at stoffet i overflatebelegget beholder sin bøyelighet. Undetsøkelser har vist at tempetatuten ikke bøt væte ovet 120°C. Also, the tempe tatute avoids the drying or steaming of the solvent in an important way, so that the fabric in the surface coating retains its flexibility. Investigations have shown that the tempe tatut was not able to get wet above 120°C.

Det foreligger forskjellige måter for påføring av bindemidlet, f.eks. rulling ellet sprøyting. Når bindemidlet rulles på mineralull-produktet, er det imidlertid en risiko for at de løse fibrene skulle feste seg til rullen og etter hvert ødelegge behandlingsresultatet. Det anbefales derfor at bindemidlet sprøytes på produktet. There are different ways of applying the binder, e.g. rolling or spraying. However, when the binder is rolled onto the mineral wool product, there is a risk that the loose fibers would stick to the roll and eventually ruin the treatment result. It is therefore recommended that the binder is sprayed onto the product.

Det er viktig at fibrene av mineralull-materiale ikke hat hydrofobe overflateegenskaper, slik at fibrene gjøt det vanskelig eller umulig å påføre bindemidlet eller å oppnå en riktig spredning av bindemidlet over fibrene. For å eliminere denne risikoen kan bindemidlet derfor fortrinnsvis tilsettes en liten mengde fuktemiddel, f.eks. et vannløselig tensid. It is important that the fibers of mineral wool material do not have hydrophobic surface properties, so that the fibers make it difficult or impossible to apply the binder or to achieve a correct spread of the binder over the fibers. To eliminate this risk, a small amount of wetting agent can therefore preferably be added to the binder, e.g. a water-soluble surfactant.

Claims (10)

1. Legeme av mineralull, egnet som lydisolerende legeme, med evne til å dempe eller absorbere både høyfrekvent og lavfrekvent lyd, karakterisert ved at i det minste storparten av de overflatene av mineralull-legemet som eksponeres for den lavfrekvente og høyeftekvente lyden et belagt med et bindemiddel av ubrennbar type bestående av vannglass som er ptepolymetisett, og som et pålagt i en slik mengde og på en slik måte at praktisk talt alle fibrene på overflata av mineralul1-legemet er bundet til hverandre uten at bindemidlet danner en sammenhengende ubrutt film av bindemiddel.1. Body of mineral wool, suitable as a sound-insulating body, with the ability to dampen or absorb both high-frequency and low-frequency sound, characterized in that at least the majority of the surfaces of the mineral wool body that are exposed to the low-frequency and high-impact sound are coated with a binder of a non-flammable type consisting of water glass that is ptepolymethisette, and as an applied in such an amount and in such a manner that practically all the fibers on the surface of the mineralul1 body are bound to each other without the binder forming a continuous, unbroken film of binder. 2. Legeme i samsvar med patentkrav 1, karakterisert ved at vannglasset et påført i en mengde på 75-150 ellet fortrinnsvis 95-140 g tørrstoff/m 2.2. Body in accordance with patent claim 1, characterized in that the water glass is applied in an amount of 75-150 or preferably 95-140 g dry matter/m 2. 3. Legeme i samsvar med patentkrav 1 eller 2, karakterisert ved at bindemidlet inneholder en liten andel .av et fuktemiddo1.3. Body in accordance with patent claim 1 or 2, characterized in that the binder contains a small proportion of a humectant1. 4. Legeme i samsvar med et av patentkravene 1-3, karakterisert ved at legemet er laget av plater eller halvrør og er anordnet inne i og dekker hele strømningsflaten.i et ventilasjonssystem.4. Body in accordance with one of patent claims 1-3, characterized in that the body is made of plates or half-tubes and is arranged inside and covers the entire flow surface in a ventilation system. 5. Framgangsmåte for tilvirkning av mineralull- legeme, f.eks. plate ellet halvrør, i samsvar med et av patentkravene 1-5, med evne til å dempe eller absorbere både høyfrekvent og lavfrekvent lyd, karakterisert ved at legemet påføres en fortynnet løsning av vannglass som er prepolymerisert, hvoretter det prepolymeriserte vannglasset får anledning til å dampe av, og hvorved vannglasset påføres i tilstrekkelig mengde slik at det etter at oppløsningsmidlet er fordampet, binder praktisk talt alle fibre på overflata av legemet, uten å danne en sammenhengende ubrutt film av bindemiddel.5. Procedure for manufacturing a mineral wool body, e.g. plate or half-pipe, in accordance with one of the patent claims 1-5, with the ability to dampen or absorb both high-frequency and low-frequency sound, characterized in that a diluted solution of prepolymerized water glass is applied to the body, after which the prepolymerized water glass is allowed to evaporate, and whereby the water glass is applied in sufficient quantity so that, after the solvent has evaporated, it binds practically all fibers on the surface of the body , without forming a continuous, unbroken film of binder. 6. Framgangsmåte i samsvar med patentkrav 5, karakterisert ved at bare en del av overflata av legemet, hvilken blir utsatt for lyd, blir overflatebehandlet.6. Method in accordance with patent claim 5, characterized in that only part of the surface of the body, which is exposed to sound, is surface treated. 7. Framgangsmåte i samsvar med patentkrav 5 eller 6, karakterisert ved at vannglasset påføres legemet ved sprøyting eller rulling.7. Method in accordance with patent claim 5 or 6, characterized in that the water glass is applied to the body by spraying or rolling. 8. Framgangsmåte i samsvar med patentkrav 7, karakterisert ved at vannglasset før påføring på ) legemet prepolymeriseres til en viskositet større enn 300 mPa.s ved 20°C og et tørrstoff innhold på 50%.8. Method in accordance with patent claim 7, characterized in that the glass of water before application on ) the body is prepolymerized to a viscosity greater than 300 mPa.s at 20°C and a solids content of 50%. 9. Framgangsmåte i samsvar med et av patentkravene 5-8, karakterisert ved at vannglasset ved påføringen gis en konsentrasjon på under 40% og fortrinnsvis under 38% tørrstoff innhold, og at påføringen skjer i en mengde på 75-150, fortrinnsvis 95-140 gram tørrstoff innhold/m 2.9. Method in accordance with one of patent claims 5-8, characterized in that the glass of water is given a concentration of less than 40% and preferably less than 38% dry matter content during the application, and that the application takes place in an amount of 75-150, preferably 95-140 gram dry matter content/m 2. 10. Framgangsmåte i samsvar med et av patentkravene 5-9, karakterisert ved at avdampingen av vannglassets løsningsmiddel eller tørkingen av vannglasset i skjer ved relativt lav temperatur, fortrinnsvis under 120°C.10. Method in accordance with one of patent claims 5-9, characterized in that the evaporation of the water glass's solvent or the drying of the water glass takes place at a relatively low temperature, preferably below 120°C.
NO874916A 1986-04-03 1987-11-26 MINERAL WOOL PRODUCT AND PROCEDURE FOR ITS MANUFACTURING. NO165038C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8601493A SE458456B (en) 1986-04-03 1986-04-03 MINERAL WOOL PRODUCT AND A PROCEDURE FOR ITS PREPARATION
PCT/SE1987/000167 WO1987005960A1 (en) 1986-04-03 1987-04-01 Sound absorbing mineral wool product and method of manufacturing the same

Publications (4)

Publication Number Publication Date
NO874916L NO874916L (en) 1987-11-26
NO874916D0 NO874916D0 (en) 1987-11-26
NO165038B true NO165038B (en) 1990-09-03
NO165038C NO165038C (en) 1990-12-12

Family

ID=20364034

Family Applications (1)

Application Number Title Priority Date Filing Date
NO874916A NO165038C (en) 1986-04-03 1987-11-26 MINERAL WOOL PRODUCT AND PROCEDURE FOR ITS MANUFACTURING.

Country Status (8)

Country Link
EP (1) EP0268594B1 (en)
AT (1) ATE60388T1 (en)
DE (1) DE3767669D1 (en)
DK (1) DK160888B (en)
FI (1) FI84385B (en)
NO (1) NO165038C (en)
SE (1) SE458456B (en)
WO (1) WO1987005960A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4338619C5 (en) * 1993-11-11 2007-12-27 Saint-Gobain Isover G+H Ag Coated mineral wool product and process for its production

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE200496C1 (en)
US1966069A (en) * 1932-10-26 1934-07-10 Burgess Lab Inc C F Acoustic tile and method of manufacturing the same
DK65991C (en) 1941-07-15 1947-12-01 Arki Ab Method of Making Sound-Absorbing Sheets.
US2450911A (en) * 1943-07-20 1948-10-12 Armstrong Cork Co Acoustical structure
US3111188A (en) * 1960-02-26 1963-11-19 Owens Corning Fiberglass Corp Acoustical tile

Also Published As

Publication number Publication date
SE458456B (en) 1989-04-03
NO874916L (en) 1987-11-26
DK605187A (en) 1987-11-18
EP0268594B1 (en) 1991-01-23
SE8601493L (en) 1987-10-04
EP0268594A1 (en) 1988-06-01
DK605187D0 (en) 1987-11-18
DE3767669D1 (en) 1991-02-28
FI84385B (en) 1991-08-15
ATE60388T1 (en) 1991-02-15
SE8601493D0 (en) 1986-04-03
FI875260L (en) 1987-11-27
WO1987005960A1 (en) 1987-10-08
NO874916D0 (en) 1987-11-26
NO165038C (en) 1990-12-12
FI875260A0 (en) 1987-11-27
DK160888B (en) 1991-04-29

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