Compressible preform insulating liner

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Waste gas purifier

Reexamination Certificate

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Details

C422S177000

Reexamination Certificate

active

06923942

ABSTRACT:
The invention provides a preform insulating end cone suitable for forming the end cone of a pollution control device. The preform insulating end cone includes a cone shaped intumescent or non-intumescent sheet material. The sheet material has a plurality of slits enabling the sheet material to be cone shaped. A shape retaining element is in intimate contact with the intumescent sheet material. The shape retaining element enables the intumescent sheet material to maintain a cone shape. The invention also provides methods of making preform insulating end cones of the invention.

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