WO2016144237A1 - Foldable duct comprising laminated foil on inside and outside - Google Patents

Foldable duct comprising laminated foil on inside and outside Download PDF

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Publication number
WO2016144237A1
WO2016144237A1 PCT/SE2016/050172 SE2016050172W WO2016144237A1 WO 2016144237 A1 WO2016144237 A1 WO 2016144237A1 SE 2016050172 W SE2016050172 W SE 2016050172W WO 2016144237 A1 WO2016144237 A1 WO 2016144237A1
Authority
WO
WIPO (PCT)
Prior art keywords
polyethylene
layer
foil
intermediate layer
thermoplastic polymer
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
PCT/SE2016/050172
Other languages
French (fr)
Inventor
Peter Wallin
Göran BERNHARDSSON
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.)
Climate Recovery Ind AB
Original Assignee
Climate Recovery Ind 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.)
Filing date
Publication date
Application filed by Climate Recovery Ind AB filed Critical Climate Recovery Ind AB
Priority to EP16762057.4A priority Critical patent/EP3291985B1/en
Priority to US15/555,523 priority patent/US10330222B2/en
Priority to PL16762057T priority patent/PL3291985T3/en
Publication of WO2016144237A1 publication Critical patent/WO2016144237A1/en
Anticipated expiration legal-status Critical
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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/02—Hoses, i.e. flexible pipes made of fibres or threads, e.g. of textile
    • 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
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/04—Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0263—Insulation for air ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0272—Modules for easy installation or transport
    • 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
    • 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
    • B32B2262/101—Glass 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • 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
    • 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
    • B32B2307/732—Dimensional properties
    • 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
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties

Definitions

  • Foldable duct comprising laminated foil on inside and outside
  • the present invention concerns foldable duct having a foil laminated thereon.
  • the foil is especially suitable for lami ⁇ nating ducts, preferably made up of mineral fibres, such as glass or stone fibres, and binder agent.
  • the ducts may be suitable for use in ventilation systems. Background art
  • Previous foils used for laminating ducts are made up by a metal layer, usually aluminium, and a polymer layer, usually polyethylene (PE) . These kind of layers have low mechanical prop ⁇ erties, i.e. break easily when bent or stretched or exposed to pressures, especially concentrated pressures.
  • PE polyethylene
  • An aim of the present invention is to provide a duct having a foil that has better mechanical properties than previously known foils. Another aim is to provide a fire protecting foil. Especially, an aim is to provide a foldable foil which does not rupture due to folding and stretching. Thus an aim is to provide a foil with some flexibility.
  • a solution according to the present invention is to add a layer of a polyethylene, such as polyethylene terephthalate (PET) , to the previously known foils of an outer aluminium layer and an inner layer of polyethylene (PE) .
  • PET polyethylene terephthalate
  • PE polyethylene
  • this inner layer may be any thermoplastic polymer having a melting point below the polyethylene.
  • This layer of polyethylene such as PET brings a flexibility to the foil at the same time as it does not break easily when it is exposed to mechanical forces, such as bend ⁇ ing, stretching and pressure.
  • the foil will withstand folding and concentrated pressures. Withstanding folding is important during transport of ducts and building of duct sys ⁇ tems. Withstanding pressure is important not to puncture the foil.
  • the foil needs to be intact in order to provide fire protection .
  • thermoplastic polymer hav ⁇ ing a melting point below polyethylene such as PET is interme ⁇ diate the outer aluminium layer and the layer of PET in order to adhere the aluminium layer to the PET layer. The adhesion arises when the polymer is melted.
  • the intermediate layer of a thermoplastic polymer having a melting point below PET functions as an adhesive.
  • the inner layer of thermoplastic polymer having a melting point below PET also functions as an adhesive between the PET layer and the duct or the outer layer of aluminium, when wrapped around or inside a duct.
  • the foil is heat sealable.
  • the duct is preferably made up of mineral fibres, such as glass fibres, and binder agent and preferably used in ventilation systems.
  • the foil further comprises an intermediate layer of glass fibres, which further enhances the mechanical properties, especially the withstanding of pres ⁇ sure.
  • the intermediate layer of glass fibres is present in between the intermediate layer of polyethylene such as PET and the inner layer of thermoplastic polymer having a melting point below polyethylene such as PET.
  • the thermoplastic polymer having a melting point below polyethylene such as PET is polyethylene (PE) .
  • An aim is to fulfil a specific fire protection classification called A2sld0. This means that the energy content of the prod ⁇ uct may not exceed 3 MJ/kg (A2 ) ; the smoke exhaust must be low (si); and no dripping of melted product is allowed during fire (dO) .
  • the foil must fulfil these requirements.
  • the inner layer of PE has a weight of 20-30 g/m 2 , preferably 22-28 g/m 2 and/or the intermediate layer of PE has a weight of 10-20 g/m 2 , preferably 12-18 g/m 2 .
  • the foil may have a total weight of 75-105 g/m 2 , preferably 85-95 g/m 2 and a total thickness of 40-60 ⁇ , preferably 45-55 ⁇ .
  • the foil is used on the inside and/or on the outside of a duct, which is foldable.
  • the foil is present at least on the inside.
  • the foil is laminated by heat sealing.
  • the duct is preferably made up by glass or stone fibres and binder agent.
  • the foil may have additional layers although it should at least have the layers according to the claims. For example it is possible to add a coating of lacquer on top of the aluminium layer.
  • Fig. 1 shows a schematic cross sectional view of layers of a first embodiment of the present inventive foil.
  • Fig. 2 shows a schematic cross sectional view of layers of a second embodiment of the present inventive foil.
  • Fig. 3 shows a cross sectional view of a duct with a foil having an overlapping edge.
  • a first embodiment of a foil 1 according to the present invention is shown.
  • the layers forming the foil will be described from the outside 2, from the top in the figure, to the inside 3 facing a duct 4, for example.
  • An outer layer 5 is made of aluminium.
  • an intermediate layer 6 of a thermoplastic polymer having a melting point below polyethylene for example polyethylene terephthalate (PET) , such as polyethylene (PE) is provided, which unite the outer layer 5 with an intermediate layer 7 of polyethylene such as polyethylene terephthalate (PET) .
  • PET polyethylene terephthalate
  • PET polyethylene terephthalate
  • the melting point of alu ⁇ minium and polyethylene such as PET is higher than PE .
  • the intermediate layer 7 of polyethylene such as PET is an inner layer 8 provided made of a thermoplastic polymer having a melting point below polyethylene for example PET, such as PE .
  • the inner layer 8 of PE is also meltable in order to adhere to for example a duct, preferably a duct made of glass fibres and binder agent, or the outer layer 5 of aluminium when an overlapping edge 10 is to be fastened when applied to a duct. See Fig. 3.
  • a layer 9 of glass fibres is provided between the intermediate layer 6 of a thermoplastic polymer having a melting point below polyethylene for example PET, such as PE, and the intermediate layer 7 of polyethylene such as PET, or between the intermediate layer 7 of polyethylene such as PET and the inner layer 8 of a thermoplastic polymer having a melting point below PET, such as PE, which is shown in Fig. 2.
  • the layer 9 of glass fibres is arranged like a net.
  • the net is a 5x10 glass fibre scrim.
  • the layer 9 of glass fibres are adhered to the layer 7 of polyethylene such as PET by means of the inner layer 8 of for example PE when it is melted.
  • the foil may have a total weight of 75-105 g/m 2 , preferably 85- 95 g/m 2 and a total thickness of 40-60 ⁇ , preferably 45-55 ⁇ .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Duct Arrangements (AREA)

Abstract

The present invention concerns a foldable duct (4) made of glass or stone fibres and binder agent having a foil (1) laminated thereon, on the inside and outside of the duct, wherein the foil (1) at least comprises: -an outer layer of aluminium (5), -an intermediate layer of a thermoplastic polymer (6) having a lower melt point than polyethylene, positioned closest to the outer layer of aluminium (5), -an intermediate layer of polyethylene (7), positioned between the intermediate layer of thermoplastic polymer (6), and -an inner layer of a thermoplastic polymer (8) having a lower melt point than polyethylene.

Description

Foldable duct comprising laminated foil on inside and outside
Technical field
The present invention concerns foldable duct having a foil laminated thereon. The foil is especially suitable for lami¬ nating ducts, preferably made up of mineral fibres, such as glass or stone fibres, and binder agent. The ducts may be suitable for use in ventilation systems. Background art
Previous foils used for laminating ducts are made up by a metal layer, usually aluminium, and a polymer layer, usually polyethylene (PE) . These kind of layers have low mechanical prop¬ erties, i.e. break easily when bent or stretched or exposed to pressures, especially concentrated pressures.
Summary of the invention
An aim of the present invention is to provide a duct having a foil that has better mechanical properties than previously known foils. Another aim is to provide a fire protecting foil. Especially, an aim is to provide a foldable foil which does not rupture due to folding and stretching. Thus an aim is to provide a foil with some flexibility. A solution according to the present invention is to add a layer of a polyethylene, such as polyethylene terephthalate (PET) , to the previously known foils of an outer aluminium layer and an inner layer of polyethylene (PE) . Although, this inner layer may be any thermoplastic polymer having a melting point below the polyethylene. This layer of polyethylene such as PET brings a flexibility to the foil at the same time as it does not break easily when it is exposed to mechanical forces, such as bend¬ ing, stretching and pressure. Thus the foil will withstand folding and concentrated pressures. Withstanding folding is important during transport of ducts and building of duct sys¬ tems. Withstanding pressure is important not to puncture the foil. The foil needs to be intact in order to provide fire protection .
It is a special aim to provide a foil that can be folded and unfolded repeatedly without breaking. The development of a duct with clearly defined folding lines combined with zones that will not be folded put these special requirements on the foil. When folded the duct will be folded again and again in the same place. The high requirements on fire resistance, unburnability, steam resistance and air tightness all after repeated folding have pushed forward this product. Preferably an additional layer of a thermoplastic polymer hav¬ ing a melting point below polyethylene such as PET is interme¬ diate the outer aluminium layer and the layer of PET in order to adhere the aluminium layer to the PET layer. The adhesion arises when the polymer is melted. Thus the intermediate layer of a thermoplastic polymer having a melting point below PET functions as an adhesive. The inner layer of thermoplastic polymer having a melting point below PET also functions as an adhesive between the PET layer and the duct or the outer layer of aluminium, when wrapped around or inside a duct. The foil is heat sealable. The duct is preferably made up of mineral fibres, such as glass fibres, and binder agent and preferably used in ventilation systems.
According to another embodiment the foil further comprises an intermediate layer of glass fibres, which further enhances the mechanical properties, especially the withstanding of pres¬ sure. Preferably the intermediate layer of glass fibres is present in between the intermediate layer of polyethylene such as PET and the inner layer of thermoplastic polymer having a melting point below polyethylene such as PET. Preferably the thermoplastic polymer having a melting point below polyethylene such as PET is polyethylene (PE) . An aim is to fulfil a specific fire protection classification called A2sld0. This means that the energy content of the prod¬ uct may not exceed 3 MJ/kg (A2 ) ; the smoke exhaust must be low (si); and no dripping of melted product is allowed during fire (dO) . This means that the foil must fulfil these requirements. In such an embodiment the inner layer of PE has a weight of 20-30 g/m2, preferably 22-28 g/m2 and/or the intermediate layer of PE has a weight of 10-20 g/m2, preferably 12-18 g/m2. The foil may have a total weight of 75-105 g/m2, preferably 85-95 g/m2 and a total thickness of 40-60 μπι, preferably 45-55 μπι.
According to a further aspect of the present invention the foil is used on the inside and/or on the outside of a duct, which is foldable. Preferably the foil is present at least on the inside. The foil is laminated by heat sealing. The duct is preferably made up by glass or stone fibres and binder agent.
The foil may have additional layers although it should at least have the layers according to the claims. For example it is possible to add a coating of lacquer on top of the aluminium layer.
Short description of the drawings
The present invention will now be described in detail under reference to the accompanying drawings, in which
Fig. 1 shows a schematic cross sectional view of layers of a first embodiment of the present inventive foil.
Fig. 2 shows a schematic cross sectional view of layers of a second embodiment of the present inventive foil. Fig. 3 shows a cross sectional view of a duct with a foil having an overlapping edge.
Detailed description of embodiments of the invention
In Fig. 1 a first embodiment of a foil 1 according to the present invention is shown. The layers forming the foil will be described from the outside 2, from the top in the figure, to the inside 3 facing a duct 4, for example. An outer layer 5 is made of aluminium. Underneath an intermediate layer 6 of a thermoplastic polymer having a melting point below polyethylene for example polyethylene terephthalate (PET) , such as polyethylene (PE) , is provided, which unite the outer layer 5 with an intermediate layer 7 of polyethylene such as polyethylene terephthalate (PET) . This is made by means of heating the foil 1 up to the melting point of polyethylene PE, which normally is between 80-100°C. The melting point of alu¬ minium and polyethylene such as PET is higher than PE . Underneath the intermediate layer 7 of polyethylene such as PET is an inner layer 8 provided made of a thermoplastic polymer having a melting point below polyethylene for example PET, such as PE . The inner layer 8 of PE is also meltable in order to adhere to for example a duct, preferably a duct made of glass fibres and binder agent, or the outer layer 5 of aluminium when an overlapping edge 10 is to be fastened when applied to a duct. See Fig. 3.
According to a second embodiment of the foil according to the present invention a layer 9 of glass fibres is provided between the intermediate layer 6 of a thermoplastic polymer having a melting point below polyethylene for example PET, such as PE, and the intermediate layer 7 of polyethylene such as PET, or between the intermediate layer 7 of polyethylene such as PET and the inner layer 8 of a thermoplastic polymer having a melting point below PET, such as PE, which is shown in Fig. 2.
Preferably the layer 9 of glass fibres is arranged like a net. According to a suggested embodiment the net is a 5x10 glass fibre scrim. The layer 9 of glass fibres are adhered to the layer 7 of polyethylene such as PET by means of the inner layer 8 of for example PE when it is melted.
It is also possible to add an outer layer of lacquer to the aluminium layer to avoid oxidation on the aluminium surface.
The foil may have a total weight of 75-105 g/m2, preferably 85- 95 g/m2 and a total thickness of 40-60 μπι, preferably 45-55 μπι.

Claims

1. A foldable duct (4) made of glass or stone fibres and binder agent having a foil (1) laminated thereon, on the inside and outside of the duct, wherein the foil (1) at least comprises:
- an outer layer of aluminium (5),
- an intermediate layer of a thermoplastic polymer (6) having a lower melt point than polyethylene, positioned closest to the outer layer of aluminium (5),
- an intermediate layer of polyethylene (7), positioned between the intermediate layer of thermoplastic polymer ( 6 ) , and
- an inner layer of a thermoplastic polymer (8) having a lower melt point than polyethylene.
2. The foldable duct according to claim 1, wherein the foil further comprises an intermediate layer of glass fibres.
3. The foldable duct according to claim 2, wherein the intermediate layer of glass fibres is present in between the intermediate layer of polyethylene and the inner layer of a thermoplastic polymer having a lower melt point than polyethylene .
4. The foldable duct according to claim 2 or 3, wherein the intermediate layer of glass fibres is in the form of a net .
5. The foldable duct according to any of the previous claims, wherein the polyethylene is polyethylene terephthalate (PET) .
6. The foldable duct according to any of the previous claims, wherein the thermoplastic polymer having a lower melt point than polyethylene is polyethylene (PE) .
7. The foldable duct according to claim 6, wherein the inner layer of PE has a weight of 20-30 g/m2, preferably 22-28 g/m2.
8. The foldable duct according to claim 6, wherein the in- termediate layer of PE has a weight of 10-20 g/m2, pref¬ erably 12-18 g/m2.
9. The foldable duct according to any one of the previous claims, wherein the total weight is 75-105 g/m2, prefera¬ bly 85-95 g/m2.
10. The foldable according to any one of the previous claims, wherein the total thickness is 40-60 μπι, preferably 45-55 μπι.
PCT/SE2016/050172 2015-03-06 2016-03-04 Foldable duct comprising laminated foil on inside and outside Ceased WO2016144237A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP16762057.4A EP3291985B1 (en) 2015-03-06 2016-03-04 Foldable duct comprising laminated foil on inside and outside
US15/555,523 US10330222B2 (en) 2015-03-06 2016-03-04 Foldable duct comprising laminated foil on inside and outside
PL16762057T PL3291985T3 (en) 2015-03-06 2016-03-04 Foldable duct comprising laminated foil on inside and outside

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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SE1550278A SE539581C2 (en) 2015-03-06 2015-03-06 Foldable duct having foil laminated thereon

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PL (1) PL3291985T3 (en)
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Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
US20230304282A1 (en) * 2022-03-25 2023-09-28 Flexible Technologies, Inc. Class 1 flexible uninsulated duct with polymer core and surrounding fire resistant barrier layer and method of use

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212529A (en) * 1961-12-11 1965-10-19 Owens Corning Fiberglass Corp Collapsible duct section
US20070178283A1 (en) * 2004-04-23 2007-08-02 Saint-Gobain Isover Thermal insulating material
US20100319839A1 (en) * 2009-01-14 2010-12-23 Monroe William Shumate Systems and methods for insulating a pipe
US20110155275A1 (en) * 2008-05-31 2011-06-30 Malmo Air Ab Duct means for an air flow or a gas flowand a method for manuacturing , handling and mounting said duct means
JP2013113454A (en) * 2011-11-25 2013-06-10 Kurimoto Ltd Duct
US20140227468A1 (en) * 2011-09-22 2014-08-14 Climate Recovery Ind Ab Duct and a method for its manufacture
US20140290785A1 (en) * 2011-09-22 2014-10-02 Climate Recovery Ind Ab Ventilation duct
JP2015004503A (en) * 2013-06-24 2015-01-08 株式会社竹中工務店 Flexible duct

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980107A (en) * 1975-05-08 1976-09-14 Champion International Corporation Helically wound tubular wall material
US20040052987A1 (en) * 2002-09-12 2004-03-18 Shetty Shankara R. Paper based retortable can and method for making same
AU2003297507A1 (en) * 2002-12-27 2004-07-29 3M Innovative Properties Company Facing for insulation and other applications
US8141594B2 (en) * 2010-08-13 2012-03-27 Johns Manville Pipe insulation products and methods
DE102009033762A1 (en) 2009-07-17 2011-01-27 Leonhard Kurz Stiftung & Co. Kg Method for producing a multilayer body and multilayer body
ES2364058B1 (en) 2009-08-28 2012-07-04 Saint-Gobain Cristalería, Sa. REINFORCED INSULATION PANEL WITH EXTERNAL COATING, FOR AIR DISTRIBUTION CONDUCT.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3212529A (en) * 1961-12-11 1965-10-19 Owens Corning Fiberglass Corp Collapsible duct section
US20070178283A1 (en) * 2004-04-23 2007-08-02 Saint-Gobain Isover Thermal insulating material
US20110155275A1 (en) * 2008-05-31 2011-06-30 Malmo Air Ab Duct means for an air flow or a gas flowand a method for manuacturing , handling and mounting said duct means
US20100319839A1 (en) * 2009-01-14 2010-12-23 Monroe William Shumate Systems and methods for insulating a pipe
US20140227468A1 (en) * 2011-09-22 2014-08-14 Climate Recovery Ind Ab Duct and a method for its manufacture
US20140290785A1 (en) * 2011-09-22 2014-10-02 Climate Recovery Ind Ab Ventilation duct
JP2013113454A (en) * 2011-11-25 2013-06-10 Kurimoto Ltd Duct
JP2015004503A (en) * 2013-06-24 2015-01-08 株式会社竹中工務店 Flexible duct

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US20180051832A1 (en) 2018-02-22
PL3291985T3 (en) 2020-05-18
US10330222B2 (en) 2019-06-25
SE1550278A1 (en) 2016-09-07
EP3291985A4 (en) 2018-07-18
EP3291985B1 (en) 2019-11-20
EP3291985A1 (en) 2018-03-14
SE539581C2 (en) 2017-10-17

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