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CA-3242460-C - A BUILDING ENVELOPE

CA3242460CCA 3242460 CCA3242460 CCA 3242460CCA-3242460-C

Abstract

This invention relates to a building envelope comprising a fire resistant tape and a fire resistant barrier material, wherein the fire resistant tape seals a seam between a first sheet of the fire resistant barrier material and a second sheet of the fire resistant barrier material, wherein the fire resistant barrier material comprises a metallic layer, a support layer and a glue layer between the metallic layer and the support layer, and the fire resistant tape comprises a metallic layer, a support layer, a glue layer between the metallic layer and the support layer, and an acrylic pressure sensitive adhesive coating layer on the support layer. This invention further relates to a fire resistant seam tape.

Inventors

  • Pierrick Girard
  • Ann-Mari UKKONEN

Assignees

  • WALKI GROUP OY

Dates

Publication Date
20260505
Application Date
20220701
Priority Date
20211216

Claims (16)

  1. Claims: 1. A building envelope comprising a fire resistant tape and a fire resistant barrier material, wherein the fire resistant tape seals a seam between a first sheet of the fire resistant barrier material and a second 5 sheet of the fire resistant barrier material, wherein A) the fire resistant barrier material comprises - a metallic layer of the fire resistant barrier material, 10 - a support layer of the fire resistant barrier material comprising  a glass fiber fabric having a specific mass in a range between 50 g/m2 and 500 g/m2, or  a glass fiber scrim having a specific mass in a range between 5 g/m2 and 50 g/m2, 15 and - a glue layer of the fire resistant barrier material between the metallic layer and the support layer, the glue layer glue having a specific mass in a range between 0.5 g/m2 and 15 g/m2, and 20 B) the fire resistant tape comprises - a metallic layer of the fire resistant tape, - a support layer of the fire resistant tape comprising - a glass fiber fabric having a specific mass in a range between 50 g/m2 and 500 g/m2, or 25 - a glass fiber scrim having a specific mass in a range between 5 g/m2 and 50 g/m2, - a glue layer of the fire resistant tape between the metallic layer of the fire resistant tape and the support layer of the fire resistant tape, the glue layer having a specific mass in a range between 0.5 g/m2 and 15 30 g/m2, and - an acrylic pressure sensitive adhesive coating layer on the support layer of the fire resistant tape, the acrylic pressure sensitive adhesive 36 coating layer having a specific mass in a range between 20 g/m2 and 200 g/m2.
  2. 2. The building envelope according to claim 1, wherein the metallic layer of the fire resistant barrier material is an aluminum layer having 5 a thickness in a range of between 6 μm and 100 μm and/or wherein the metallic layer of the fire resistant tape is an aluminum layer having a thickness in a range between 6 μm and 100 μm. 10
  3. 3. A fire resistant seam tape for a building comprising - a metallic layer, - a support layer comprising - a glass fiber fabric having a specific mass in a range between 50 g/m2 and 500 g/m2, or 15 - a glass fiber scrim having a specific mass in a range between 5 g/m2 and 50 g/m2, - a glue layer between the metallic layer and the support layer, the glue layer having a specific mass in a range between 0.5 g/m2 and 15 g/m2, and 20 - an acrylic pressure sensitive adhesive coating layer on the support layer, the acrylic pressure sensitive adhesive coating layer having a specific mass in a range between 20 g/m2 and 200 g/m2.
  4. 4. The fire resistant seam tape for a building according to claim 3, wherein the 25 metallic layer is an aluminum layer having a thickness in a range of between 6 μm and 100 μm.
  5. 5. The building envelope according to claim 1 or 2, wherein the building envelope is arranged to fulfil European fire protection standard Euroclass A2 30 - s1, d0, or the fire resistant seam tape according to claim 3 or 4, wherein the tape is arranged to fulfil European fire protection standard Euroclass B - s2, d0. 37
  6. 6. The building envelope according to claim 1, 2 or 5, wherein the glue layers comprise a bicomponent or multicomponent glue, or the fire resistant seam tape according to any one of claims 3-5, wherein the glue layer comprises a bicomponent or multicomponent glue.
  7. 7. The building envelope or the fire resistant seam tape according to claim 6, wherein the glue layer comprises a flame retardant bicomponent or multicomponent glue. 10
  8. 8. The building envelope according to any one of the preceding claims 1, 2 or 5 to 7, or the fire resistant seam tape according to any one of the preceding claims 3 to 7, wherein the specific mass of the acrylic pressure sensitive adhesive coating layer is in a range between 30 g/m2 and 80 g/m2. 15
  9. 9. The building envelope according to any one of the preceding claims 1, 2 or 5 to 8, or the fire resistant seam tape according to any one of the preceding claims 3 to 8, wherein the acrylic pressure sensitive adhesive coating layer is a flame retardant acrylic pressure sensitive adhesive coating layer comprising at least one flame retardant component.
  10. 10. The building envelope according to any one of the preceding claims 1, 2 or 5 to 9, wherein the specific mass of the glue layers is in a range between 0.7 g/m2 and 3 g/m2, or the fire resistant seam tape according to any one of the preceding claims 3 25 to 9, wherein the specific mass of the glue layer is in a range between 0.7 g/m2 and 3 g/m2.
  11. 11. The building envelope according to any one of the preceding claims 1, 2 or 5 to 10 comprising the glass fiber fabrics, each glass fiber fabric having the 30 specific mass in a range between 70 g/m2 and 90 g/m2, or the fire resistant seam tape according to any one of the preceding claims 3 to 10 comprising the glass fiber fabric, the glass fiber fabric having the specific mass in a range between 70 g/m2 and 90 g/m2. 38
  12. 12. The building envelope according to any one of the preceding claims 1, 2 or 5 to 11, wherein the thickness of the metallic layers is in a range between 30 μm and 50 μm, or the fire resistant seam tape according to any one of the 5 preceding claims 3 to 11, wherein the thickness of the metallic layer is in a range between 30 μm and 50 μm.
  13. 13. The building envelope according to any one of the preceding claims 1, 2 or 10 5 to 12, wherein the support layers comprise at least 90 wt.% glass fibers, determined from a total weight of each support layer, or the fire resistant seam tape according to any one of the preceding claims 3 to 12, wherein the support layer comprises at least 90 wt.% glass fibers, determined from a total weight of each support layer.
  14. 14. The building envelope according to any one of the preceding claims 1, 2 or 5 to 13, wherein at least one of the support layers comprises sized glass fibers, or the fire resistant seam tape according to any one of the preceding claims 3 20 to 13, wherein the support layer comprises sized glass fibers.
  15. 15. The building envelope or the fire resistant seam tape according to claim 14, wherein the sized glass fibers comprise polyvinyl alcohol. 25
  16. 16. The building envelope according to any one of the preceding claims 1, 2 or 5 to 15, wherein a total amount of the fire resistant seam tape is equal to or less than 15%, determined from a total outer surface area of the building envelope.

Description

1 A BUILDING ENVELOPE Technical field The specification relates to a fire resistant building envelope. The 5 specification further relates to a fire resistant seam tape for a building. Background 10 Building envelopes can be used as a physical separator between conditioned and unconditioned environment of a building. Building envelopes can be used to protect indoors from liquid and vapor water, heat, light and noise transfer. Thanks to the building envelopes, it can be possible e.g. to keep warm or cold air indoors. 15 Buildings can have e.g. vapor barriers to prevent e.g. water, such as moisture, from getting into a wall assembly. However, there is still a need for improved building envelopes for buildings. Summary It is an aim of this specification to provide a building envelope comprising a fire resistant barrier material and a fire resistant tape. Further, it is an aim of this specification to provide a fire resistant seam tape for a building. Buildings can comprise easily flammable materials. To strengthen reaction to fire, the novel building envelope discloses a fire resistant barrier material and a fire resistant seam tape for improved fire resistance, at least to some extent. 2 Furthermore, controllability of some barrier properties of the building envelope may be improved due to the combination comprising the fire resistant barrier material and the fire resistant tape, wherein the tape can have similar barrier properties as the fire resistant barrier material. The novel building envelope may provide, for ex- 5 ample, better reaction to fire for improved safety of people in a building. The fire resistant barrier material can be a fire resistant sheet material. The fire resistant barrier material can be a laminated sheet for a building. The fire resistant barrier material is preferably a fire resistant watertight water vapor barrier material 10 which may be at least substantially airtight. The fire resistant tape can be a fire resistant seam tape for a building. The fire resistant seam tape can be arranged to seal a seam between sheets of the fire resistant barrier material. The building envelope can comprise the fire resistant tape and at least two sheets of the fire resistant barrier material, i.e., a first sheet and a second sheet, wherein the fire resistant tape seals a seam between said sheets. The first sheet may overlap the second sheet, and the tape can seal the seam between the overlapped sheets. The building envelope comprising the fire resistant barrier material and the fire resistant tape can be installed for purpose of fire resistance, waterproofing, windbreaking and/or water vapor barrier. 25 The fire resistant barrier material can comprise: A) a metallic layer which can be an aluminum layer having a thickness in a range between 6 μm and 100 μm, B) a support layer comprising a glass fiber fabric having a specific mass in a range between 50 g/m2 30 and 500 g/m2, or and a glass fiber scrim having a specific mass in a range between 5 g/m2 and 50 g/m2, Date Re9ue/Date Recieved 2024-06-12 3 C) a glue layer between the metallic layer and the support layer, the glue layer having a specific mass in a range between 0.5 g/m2 and 15 g/m2. Thanks to the above-mentioned structure of the fire resistant barrier material, flame retardant properties as well as some barrier properties, such as water vapor barrier, 5 may be improved. The glue layer of the barrier material may comprise a bicomponent or multicomponent glue. The glue layer of the barrier material can comprise a flame retardant glue. Preferably, the glue layer of the barrier material is a flame retardant bicomponent or 10 multicomponent glue. The fire resistant tape can comprise: A) a metallic layer of the tape, which can be an aluminum layer having a thickness in a range between 6 μm and 100 μm, 15 B) a support layer of the tape comprising a glass fiber fabric having a specific mass in a range between 50 g/m2 and 500 g/m2, or a glass fiber scrim having a specific mass in a range between 5 g/m2 and 50 g/m2, 20 C) a glue layer of the tape between the metallic layer and the support layer, the glue layer having a specific mass in a range between 0.5 g/m2 and 15 g/m2, and D) an acrylic pressure sensitive adhesive coating layer on the support layer of the tape, the acrylic pressure sensitive adhesive coating layer having a specific 25 mass in a range between 20 g/m2 and 200 g/m2. Thus, the flame retardant properties as well as some barrier properties of the fire resistant tape may be improved. Furthermore, the acrylic pressure sensitive adhesive can provide an improved seal for the fire resistant sheets. 30 The glue layer of the fire resistant tape can comprise a bicomponent or multicomponent glue. The glue layer of the fire resistant tape can comprise a flame retardant glue. Preferably, the glue layer of the tape is a flame retardant bicomponent or multicomponent glue. Date Re9ue/Date Recieved 2024-06-12 4 The pressure sensitive adhesive coating