Fire Stop Article
Patent #: 7,018,699
Inventor(s): Michael Dykhoff
Company: 3M Innovative Properties Company
A fire barrier assembly for fire stopping an opening in a partition has been patented. The assembly includes a plurality of fire stop articles arranged in the opening without a secondary support structure. Each fire stop article comprises an interior insulating material and an intumescent material arranged around at least a portion of the interior insulating material. The intumescent material comprises filler material, binder material and a hydrated alkali metal silicate intumescent component.
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