EP0594768A1 - Insulating element and insulation layer composed of such elements - Google Patents

Insulating element and insulation layer composed of such elements

Info

Publication number
EP0594768A1
EP0594768A1 EP92916084A EP92916084A EP0594768A1 EP 0594768 A1 EP0594768 A1 EP 0594768A1 EP 92916084 A EP92916084 A EP 92916084A EP 92916084 A EP92916084 A EP 92916084A EP 0594768 A1 EP0594768 A1 EP 0594768A1
Authority
EP
European Patent Office
Prior art keywords
fibres
insulating element
insulating
protective cover
element according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP92916084A
Other languages
German (de)
French (fr)
Inventor
Jörgen Skjold PETERSEN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rockwool AS
Original Assignee
Rockwool International AS
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
Application filed by Rockwool International AS filed Critical Rockwool International AS
Publication of EP0594768A1 publication Critical patent/EP0594768A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • E04B1/942—Building elements specially adapted therefor slab-shaped
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/108—Rockwool fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter

Definitions

  • Insulating element and insulation layer composed of such elements.
  • This invention relates to an insulating element comprising an insulating layer made of mineral fibres and an air permeable protective cover of an organic material, said cover at least partially surrounding the insulating layer.
  • the invention relates to heat insulating mineral fibre batts or rolls provided with such protective covers.
  • Insulating batts made from mineral fibres, such as rock wool fibres, are so flexible that they can be adapted to the surfaces or spaces which are to be insulated.
  • the main object of the present invention is to reduce or eliminate the drawback of the prior art protected .
  • mineral fibre insulating elements The insulating element of the invention is characterized in that the protective cover is made from a material which, when heated to a temperature sufficiently high to set it on fire, contracts with a speed exceeding the speed at which the fire spreads.
  • the protective cover consists of a non-woven fabric of pre-stressed organic fibres.
  • prestressed fibres means fibres having inherent stresses, e.g. fibres which during their manufacture have been strecthed to such an extent as to generate tensile stresses in the fibres. When the fibres are heated to melting temperature, the tensile stresses will be released and produce the above mentioned contraction.
  • the protective cover may also consist of a perforated film having inherent tensile stresses.
  • Insulating batts which consist of a layer of mineral fibres enclosed in a sealed polyethylene film bag which has been made self-extinguishing by the addition of a fire-retardant agent.
  • such insulating batts cannot be compressed and consequently the transport of such batts involves relatively high costs. Furthermore, the addition of a fire-retardant agent to polyethylene results in a considerable increase in the costs of the material and may cause the generation of toxic compounds by thermal decomposition of the polyethylene.
  • the protective cover preferably consists of a non-woven fabric of thermoplastic fibres.
  • a non-woven fabric of pre-stressed polypropylene fibres is particularly suitable.
  • the non-woven fabric may also consist of pre-stressed fibres of polyethylene, polyester, polyamide or polyacrylic amide.
  • non-woven fabric comprising a major portion of pre-stressed fibres and a minor portion of soft non-prestressed fibres, such as 10% viscose fibres, provides an insulating element which in addition to being self-extinguishing is particularly soft to touch.
  • Protective covers having a weight of 5-100 g/m 2 and particularly 5-15 g/m 2 are preferred.
  • the insulating layer is preferably completely surrounded by the protective cover, but sometimes it may suffice to apply the protective cover on the main surfaces only or on two opposite sides or ends of the insulating element.
  • the insulating layer preferably consists of synthetic mineral fibres, including rock wool fibres, glas fibres, slag fibres and ceramic fibres.
  • a mineral fibre layer consisting of rock wool fibres and in particular rock wool fibres prepared by a method comprising the steps of introducing a melt of fibre forming raw material onto the cylinder surface of a rapidly rotating spinning wheel and subjecting the melt thrown out from this surface to the influence of one or more air streams passing over said surface, and optionally adding a binder to the fibres thus formed before collecting them so as to form a fibre layer which optionally is subjected to a doubling, compression and heating in order to cure the binder.
  • the thickness of the mineral fibre layer is preferably between 1 and 30 cm and its density is preferably from 15 to 400 kg/m 3 .
  • the invention also relates to an insulation layer consisting of insulating elements as described above.
  • FIG. 1 shows a perspective view of an insulating batt according to the invention and with the protective cover partially removed.
  • the drawing 1 designates a mineral wool layer and 2 a protective cover consisting of a non-woven fabric of organic, pre-stressed thermoplastic fibres.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention se rapporte à un élément isolant, qui comprend une couche isolante (1) en fibres minérales et une enveloppe protectrice perméable à l'air (2) constituée d'une toile non tissée de fibres organiques précontraintes et entourant complètement ou partiellement la couche isolante.The invention relates to an insulating element, which comprises an insulating layer (1) of mineral fibers and a protective breathable envelope (2) made of a nonwoven fabric of prestressed organic fibers and completely or partially surrounding the insulating layer.

Description

Insulating element and insulation layer composed of such elements.
This invention relates to an insulating element comprising an insulating layer made of mineral fibres and an air permeable protective cover of an organic material, said cover at least partially surrounding the insulating layer.
More specifically, the invention relates to heat insulating mineral fibre batts or rolls provided with such protective covers.
Insulating batts made from mineral fibres, such as rock wool fibres, are so flexible that they can be adapted to the surfaces or spaces which are to be insulated.
However, during the handling of such batts loose fibres or fibre dust tend to be released. This is particularly troublesome when such batts are used for ceiling insulation purposes.
Another serious drawback of such batts is that they may cause skin problems.
Thus, when such unprotected mineral fibre batts are brought in direct contact with the skin, the fibres extending from the surfaces of such batts tend to penetrate into the skin and to cause itching or local skin irritation.
It is well known to provide mineral fibre batts or rolls with protective covers made from a non-woven fabric or polyester fibres.
The provision of such a cover on a mineral fibre batt or roll eliminates or at least reduces some of the above mentioned problems but simultaneously creates a new problem, viz. an increased inflammability as the organic fibres are combustible and may even support a fire.
The main object of the present invention is to reduce or eliminate the drawback of the prior art protected . mineral fibre insulating elements. The insulating element of the invention is characterized in that the protective cover is made from a material which, when heated to a temperature sufficiently high to set it on fire, contracts with a speed exceeding the speed at which the fire spreads.
Surprisingly, it has been found that if embers or a burning match are dropped on an insulating element of the invention, a hole will be formed in the cover but the fire will not spread.
In a preferred embodiment of the insulating element of the invention the protective cover consists of a non-woven fabric of pre-stressed organic fibres.
The expression "prestressed fibres" as used herein means fibres having inherent stresses, e.g. fibres which during their manufacture have been strecthed to such an extent as to generate tensile stresses in the fibres. When the fibres are heated to melting temperature, the tensile stresses will be released and produce the above mentioned contraction.
The protective cover may also consist of a perforated film having inherent tensile stresses.
Insulating batts are known which consist of a layer of mineral fibres enclosed in a sealed polyethylene film bag which has been made self-extinguishing by the addition of a fire-retardant agent.
Unlike the insulating elements of the invention such insulating batts cannot be compressed and consequently the transport of such batts involves relatively high costs. Furthermore, the addition of a fire-retardant agent to polyethylene results in a considerable increase in the costs of the material and may cause the generation of toxic compounds by thermal decomposition of the polyethylene.
The protective cover preferably consists of a non-woven fabric of thermoplastic fibres. A non-woven fabric of pre-stressed polypropylene fibres is particularly suitable.
However, the non-woven fabric may also consist of pre-stressed fibres of polyethylene, polyester, polyamide or polyacrylic amide.
The use a non-woven fabric comprising a major portion of pre-stressed fibres and a minor portion of soft non-prestressed fibres, such as 10% viscose fibres, provides an insulating element which in addition to being self-extinguishing is particularly soft to touch.
Protective covers having a weight of 5-100 g/m2 and particularly 5-15 g/m2 are preferred. The insulating layer is preferably completely surrounded by the protective cover, but sometimes it may suffice to apply the protective cover on the main surfaces only or on two opposite sides or ends of the insulating element.
The insulating layer preferably consists of synthetic mineral fibres, including rock wool fibres, glas fibres, slag fibres and ceramic fibres.
It is preferred to use a mineral fibre layer consisting of rock wool fibres and in particular rock wool fibres prepared by a method comprising the steps of introducing a melt of fibre forming raw material onto the cylinder surface of a rapidly rotating spinning wheel and subjecting the melt thrown out from this surface to the influence of one or more air streams passing over said surface, and optionally adding a binder to the fibres thus formed before collecting them so as to form a fibre layer which optionally is subjected to a doubling, compression and heating in order to cure the binder.
The thickness of the mineral fibre layer is preferably between 1 and 30 cm and its density is preferably from 15 to 400 kg/m3.
The invention also relates to an insulation layer consisting of insulating elements as described above.
The invention will now be described in further detail with reference to the drawing which shows a perspective view of an insulating batt according to the invention and with the protective cover partially removed. In the drawing 1 designates a mineral wool layer and 2 a protective cover consisting of a non-woven fabric of organic, pre-stressed thermoplastic fibres.

Claims

P a t e n t C l a i m s
1. An insulating element comprising an insulating layer made of mineral fibres and an air permeable protective cover of an organic material, said cover at least partially surrounding the insulating layer, c h a r a c t e r i z e d in that the protective cover is made from a material which, when heated to a temperature sufficiently high to set it on fire, contracts with a speed exceeding the speed at which the fire spreads.
2. An insulating element according to claim 1, c h a r a c t e r ¬ i z e d in that the protective cover consists of a non-woven fabric mainly consisting of pre-stressed organic fibres.
3. An insulating element according to claim 1 or 2, c h a r a c ¬ t e r i z e d in that the non-woven fabric comprises pre-stressed thermoplastic fibres.
4. An insulating element according to any of claims 1, 2 or 3, c h a r a c t e r i z e d in that the non-woven fabric consists of a minor portion of soft non-prestressed fibres.
5. An insulating element according to any of the claims 1-4, c h a r a c t e r i z e d in that the protective cover consists of pre-stressed polypropylene fibres.
6. An insulating element according to any of the claims 1-5, c h a r a c t e r i z e d in that the protective cover has a weight of 5-100 g/m2, particularly 5-15 g/m2.
7. An insulating element according to any of the preceding claims, c h a r a c t e r i z e d in that the mineral fibres are rock wool fibres.
8. An insulation layer, c h a r a c t e r i z e d in that it is composed of insulating elements according to any of the preceding claims.
EP92916084A 1991-07-15 1992-07-13 Insulating element and insulation layer composed of such elements Ceased EP0594768A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK911353A DK135391D0 (en) 1991-07-15 1991-07-15 Insulation element and insulation layer made up of such elements
DK1353/91 1991-07-15
PCT/DK1992/000223 WO1993002259A1 (en) 1991-07-15 1992-07-13 Insulating element and insulation layer composed of such elements

Publications (1)

Publication Number Publication Date
EP0594768A1 true EP0594768A1 (en) 1994-05-04

Family

ID=8103918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92916084A Ceased EP0594768A1 (en) 1991-07-15 1992-07-13 Insulating element and insulation layer composed of such elements

Country Status (5)

Country Link
EP (1) EP0594768A1 (en)
AU (1) AU2386092A (en)
CA (1) CA2113093A1 (en)
DK (1) DK135391D0 (en)
WO (1) WO1993002259A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5277955A (en) * 1989-12-08 1994-01-11 Owens-Corning Fiberglas Technology Inc. Insulation assembly
DK18293D0 (en) * 1993-02-17 1993-02-17 Rockwool Int INSULATION MATTERS
AT2482U1 (en) * 1993-02-17 1998-11-25 Rockwool Int INSULATING WAD
SK284382B6 (en) * 1994-01-28 2005-02-04 Rockwool International A/S Rectangular insulating mat, shapeable adaptive to the shape of the insulating plane
US5848509A (en) * 1995-08-31 1998-12-15 Certainteed Corporation Encapsulated insulation assembly
DE19734532C2 (en) * 1997-07-31 2002-06-13 Thueringer Daemmstoffwerke Gmb insulating element
GB2329864A (en) * 1997-10-01 1999-04-07 Kenneth Hughes Williams Insulating material
AU2002210399A1 (en) * 2000-10-27 2002-05-06 Rockwool International A/S A vibration damping system
PT1373639E (en) * 2001-04-04 2009-03-27 Rockwool Int A vibration damping system
EP1312714A1 (en) 2001-11-14 2003-05-21 Rockwool International A/S A vibration damping system
CN103590500A (en) * 2013-11-21 2014-02-19 无锡合众信息科技有限公司 Compound fireproof heat-preservation board
US11661740B2 (en) * 2021-10-07 2023-05-30 ORB Technologies, LLC System, apparatus, and method for providing a plant-based structural assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971616A (en) * 1956-12-06 1961-02-14 William Bayley Co Building panel
DE2209275A1 (en) * 1972-02-26 1973-08-30 Hoechst Ag COMPONENT
NL7612071A (en) * 1976-10-29 1978-05-03 Nederlandse Steenwolfabriek Nv MINERAL WOOL ROOF COVERING PLATE.
DK142064B (en) * 1978-02-28 1980-08-18 Rockwool Int Mineral wool plate for thermal or acoustic insulation.
US4300322A (en) * 1980-03-28 1981-11-17 Clark William H Insulation
DE3129231C2 (en) * 1981-03-04 1983-09-15 Braun-Bautenschutz, 5787 Olsberg Multi-layer element for holding insulation materials

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9302259A1 *

Also Published As

Publication number Publication date
CA2113093A1 (en) 1993-02-04
AU2386092A (en) 1993-02-23
DK135391D0 (en) 1991-07-15
WO1993002259A1 (en) 1993-02-04

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