WO1987005960A1 - Sound absorbing mineral wool product and method of manufacturing the same - Google Patents

Sound absorbing mineral wool product and method of manufacturing the same Download PDF

Info

Publication number
WO1987005960A1
WO1987005960A1 PCT/SE1987/000167 SE8700167W WO8705960A1 WO 1987005960 A1 WO1987005960 A1 WO 1987005960A1 SE 8700167 W SE8700167 W SE 8700167W WO 8705960 A1 WO8705960 A1 WO 8705960A1
Authority
WO
WIPO (PCT)
Prior art keywords
mineral wool
binder
wool body
sound
frequence
Prior art date
Application number
PCT/SE1987/000167
Other languages
English (en)
French (fr)
Inventor
Per-Olof Lundquist
Original Assignee
Rockwool Aktiebolaget
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20364034&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1987005960(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rockwool Aktiebolaget filed Critical Rockwool Aktiebolaget
Priority to DE8787902185T priority Critical patent/DE3767669D1/de
Priority to AT87902185T priority patent/ATE60388T1/de
Publication of WO1987005960A1 publication Critical patent/WO1987005960A1/en
Priority to DK605187A priority patent/DK160888B/da
Priority to NO874916A priority patent/NO165038C/no
Priority to FI875260A priority patent/FI84385B/fi

Links

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

Definitions

  • the present invention generally relates to a mineral wool product, and more particularly the invention is directed to a mineral wool product * for sound absorbing purposes and a method of manufacturing such product.
  • sound traps are formed in the ventilation channels or ventilation drums', e.g. by providing elements in the channels, the main object of which is to fade out or absorb sounds distributed by the air inside the channels.
  • the sound traps mainly can be of two different types, namely a type which deflects the ventilation air once or twice by baffles, or sound traps of in-line type, in which the air flows substantially straight linear through a channel having a substantially constant cross section area, and in which the channel walls are made of or covered with a sound absorbing material. Especially in the latter case there are ery great demands on the efficiency of the sound absorbation.
  • mineral wool it is without difficulties possible to obtain an effective absorbation of sound of fairly high frequencies, e.g. more than 1000 Hz, but a standard type of such sound absorbing material, however, has a restricted possibility of absorbing sound of low frequencies.
  • the ability of the mineral wool to absorb low frequence sound can be increased 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 ability of the mineral wool product to absorb low frequence sound is drastically increased, and still its ability of absorbing high frequence sound is not reduced to any noticable extent.
  • Mineral wool materials of said type having a surface covering have substantial disadvantage. Firstly the plastic foils, by means of which the mineral wool is covered are inflammable, and secondly it is technically difficult to apply the plastic film on the mineral wool, especially in narrow spaces like on the concave inner- surface of a tubular insulation or similar means.
  • the amount of binder must not be so great that an integral, unbroken film of binder is formed on the surface of the mineral wool product.
  • the actual surfaces of the mineral wool bodies are covered with a non-inflammable material, especially an alkali silicate like water glass.
  • a suitable water glass substance is provided by EKA under the trade name "Bindizil FK10".
  • the water glass preferably also can be pre-polymerized or it can be treated in any other way so as to obtain a viscosity of at least 300 IPa.s at 20 °C and 50 % dry matter content.
  • the dry matter content must not be too large, and preferably the dry matter content is kept less 20 than 40 %, preferably less than 38 %.
  • the amount of binder applied to the mineral wool surface is of substantial importance. On one hand the amount should be sufficient as to bind all loose surface fibres, on the other hand the amount must not be so large that the binder provides an 25 .integral covering over the mineral wool body. Practical tests have proved that the amount of binder applied to the product should be between 75 and 100 g dry matter/m*- of the mineral wool surface, or preferably between 95 and 140 g/m .
  • the temperature during the drying or the evaporation of 30 the solvent is important so that the surface covering substance should keep its pliability. Tests have shown that the temperature should not be higher than 120 °C.
  • the fibres of the mineral wool material are not of a hydrofobic surface character so that said fibres make it difficult or impossible to apply the binder or to obtain a correct spreading of the binder over the surface fibres.
  • the binder therefore preferably can be given a slight amount of a wetting agent, e.g. a water soluable tenside.

Landscapes

  • 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)
  • Nonwoven Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Paper (AREA)
  • Exhaust Silencers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
PCT/SE1987/000167 1986-04-03 1987-04-01 Sound absorbing mineral wool product and method of manufacturing the same WO1987005960A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE8787902185T DE3767669D1 (de) 1986-04-03 1987-04-01 Schalldaempfendes mineral-wolleerzeugnis und dessen herstellung.
AT87902185T ATE60388T1 (de) 1986-04-03 1987-04-01 Schalldaempfendes mineral-wolleerzeugnis und dessen herstellung.
DK605187A DK160888B (da) 1986-04-03 1987-11-18 Lydisolerende mineraluldslegeme og fremgangsmaade til at fremstille dette
NO874916A NO165038C (no) 1986-04-03 1987-11-26 Mineralullprodukt og fremgangsmaate for dets fremstilling.
FI875260A FI84385B (fi) 1986-04-03 1987-11-27 Ljudabsorberande mineralullskropp och foerfarande foer tillverkning av denna.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8601493A SE458456B (sv) 1986-04-03 1986-04-03 Mineralullsprodukt samt ett foerfarande foer dess framstaellning
SE8601493-3 1986-04-03

Publications (1)

Publication Number Publication Date
WO1987005960A1 true WO1987005960A1 (en) 1987-10-08

Family

ID=20364034

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1987/000167 WO1987005960A1 (en) 1986-04-03 1987-04-01 Sound absorbing mineral wool product and method of manufacturing the same

Country Status (8)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4338619C5 (de) * 1993-11-11 2007-12-27 Saint-Gobain Isover G+H Ag Beschichtetes Mineralwolleprodukt und Verfahren zu dessen Herstellung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1966069A (en) * 1932-10-26 1934-07-10 Burgess Lab Inc C F Acoustic tile and method of manufacturing the same
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE200496C1 (sv)
DK65991C (da) 1941-07-15 1947-12-01 Arki Ab Fremgangsmaade til Fremstilling af lydabsorberende Plader.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1966069A (en) * 1932-10-26 1934-07-10 Burgess Lab Inc C F Acoustic tile and method of manufacturing the same
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
NO874916L (no) 1987-11-26
EP0268594A1 (en) 1988-06-01
DK605187A (da) 1987-11-18
NO165038C (no) 1990-12-12
SE458456B (sv) 1989-04-03
NO874916D0 (no) 1987-11-26
NO165038B (no) 1990-09-03
FI875260A (fi) 1987-11-27
SE8601493L (sv) 1987-10-04
ATE60388T1 (de) 1991-02-15
DK160888B (da) 1991-04-29
DE3767669D1 (de) 1991-02-28
DK605187D0 (da) 1987-11-18
FI84385B (fi) 1991-08-15
SE8601493D0 (sv) 1986-04-03
FI875260A0 (fi) 1987-11-27
EP0268594B1 (en) 1991-01-23

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