Foldable duct comprising laminated foil on inside and outside
AssigneeClimate Recovery Ind AB
InventorsPeter Wallin, Göran Bernhardsson
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Abstract
The present invention concerns a foldable duct (4) made of glass or stone fibers 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 aluminum (5), an intermediate layer of a thermoplastic polymer (6) having a lower melt point than polyethylene, positioned closest to the outer layer of aluminum (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.
Claims9
A foldable duct made of glass or stone fibres and, binder agent having a foil laminated thereon, on the inside and outside of the duct, wherein the foil at least comprises:
- an outer layer of aluminium,
- an intermediate layer of a thermoplastic polymer having a lower melt point than polyethylene terephthalate (PET), positioned closest to the outer layer of aluminium,
- an intermediate layer of polyethylene terephthalate (PET), positioned between the intermediate layer of thermoplastic polymer, and
- an inner layer of a thermoplastic polymer having a lower melt point than polyethylene terephthalate (PET).
Dependencies are inferred from the claim text.