Compressible preform insulating liner

F - Mech Eng,Light,Heat,Weapons – 01 – N

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Details

F01N 13/14 (2010.01) B29C 70/58 (2006.01) B32B 5/02 (2006.01) F01N 3/28 (2006.01) F16L 59/02 (2006.01) B01D 53/94 (2006.01)

Patent

CA 2528737

The invention provides a preform insulating end cone (30, 60) suitable for forming the end cone of a pollution control device (10), said preform (30, 60) comprising a cone shaped intumescent or non-intumescent sheet material (40) with or without a plurality of splits (49) enabling said sheet material (40) to be cone shaped and a shape retaining element in intimate contact with said intumescent sheet material (40), said shape retaining elements enabling said intumescent sheet material (40) to maintain a cone shape. The invention also provides methods of making preform insulating end cones (30, 60) of the invention.

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