Abstract:
A foamable composition comprising: a foam precursor; from 40 to 98 % by weight, based on the total fibre weight, first fibres, defined as those fibres having a length less than 150μm; and from 2 to 60 % by weight, based on the total fibre weight, second fibres, defined as those fibres having a length of at least 150μm; wherein at least 50 % of the first fibres by weight are discontinuous man- made vitreous fibres, and wherein at least 60 % of the first fibres by weight have a length less than 65pm and at least 30% of the second fibres by weight have a length of at least 250μm.
Abstract:
The invention relates to a method for the production of a rigid PIR foam composite containing man-made vitreous fibres (MMVF), the method comprising: providing MMVF, wherein at least 50% of the fibres by weight have a length of less than 250 µm; providing a polyol component; mixing the MMVF and polyol component in a ratio such that the amount of MMVF is at least 10% by weight based on total weight of polyol component; emulsifying pentane with the mixture of polyol component and MMVF; inducing foam formation by addition of a further component which comprises isocyanate.
Abstract:
A foamable composition comprising: a foam precursor; from 40 to 98 % by weight, based on the total fibre weight, first fibres, defined as those fibres having a length less than 150μm; and from 2 to 60 % by weight, based on the total fibre weight, second fibres, defined as those fibres having a length of at least 150μm; wherein at least 50 % of the first fibres by weight are discontinuous man- made vitreous fibres, and wherein at least 60 % of the first fibres by weight have a length less than 65pm and at least 30% of the second fibres by weight have a length of at least 250μm.
Abstract:
The invention relates to a method for the production of a rigid PIR foam composite containing man-made vitreous fibres (MMVF), the method comprising: providing MMVF, wherein at least 50% of the fibres by weight have a length of less than 250 μm; providing a polyol component; mixing the MMVF and polyol component in a ratio such that the amount of MMVF is at least 10% by weight based on total weight of polyol component; emulsifying pentane with the mixture of polyol component and MMVF; inducing foam formation by addition of a further component which comprises isocyanate.