Insulating construction material comprising granular insulating material
OwnerJozef Cipininventor
Life of this patent
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Abstract
A particulate insulating material is disclosed which includes a sound absorptive central core having a density of at least 1.0 grams/cm.sup.3, and an outer less dense thermally insulating coating provided at least partially about the core. The outer coating is selected to provide thermally insulating properties and may have either an open or closed foamed or expanded cellular structure and a density of less than 0.75 grams/cm.sup.3, with the core comprising between about 5 to 80% of the granule by volume. The high density core is chosen from a material which absorbs, reflects and/or diffracts sound waves, such as metals as well as natural and synthetic solid compositions and compounds.
Claims20
A construction material comprising,
- a plurality of insulating granules, each of said granules having an average diameter of between about 0.5 and 30 mm and including,
- a central core having a first density of at least 1.0 grams/cm.sup.3, and
- a thermally insulating outer coating disposed at least in part about said core, the outer coating having a second density of less than 0.75 grams/cm.sup.3, and
- wherein the core comprises between about 5 to 75% of the granule by volume.
An insulation material including,
- a plurality of insulating particles selected from the group consisting of granules and chips, said particles characterized by
- an inner core having a density of at least 1 gm/cm.sup.3, and
- a thermally insulating outer coating disposed about said core, the outer coating having an expanded closed cell structure and a density which is less than about 0.6 grams/cm.sup.3, the outer coating being selected from the group consisting of polystyrene, polyethylene, polypropylene, polyvinyl acetate, polyvinyl chloride and rubber, and
- wherein the core comprises between about 10 to 50% of the particle by volume.
Dependencies are inferred from the claim text.