Impact resistant sheet material

Details Impact resistant sheet material Impact resistant sheet material

2011-07-26

2011-07-26

Glessner, Brian E (Department: 3633)

Static structures (e.g., buildings)

Enclosure including flaccid nonmetallic or foraminous surfacing

C052S106000, C052S202000, C052S408000, C052S506100

Reexamination Certificate

active

07984591

ABSTRACT:
The present invention provides an impact resistant sheet material that helps provide exterior walls of a building with resistance to impacts so that the building structure can meet building standards, such as the Miami-Dade County Large Missile Impact Test, for resisting impacts in high wind areas. In one embodiment, sheet material comprises an impact resistant layer that attached to fibrous substrate. The impact resistant layer provides impact resistance to the sheet material so that a wall structure employing the sheet material is able to successfully withstand an impact from a projectile comprising a 9 pound, 7 foot two-by-four (“2×4”) traveling at a speed of at least 34 miles per hour. The impact resistant sheet material may comprise a moisture vapor permeable, water-impermeable barrier layer having a hydrohead of at least 55 cm and a moisture vapor transmission rate of at least 35 g/m2/day. Such a sheet material is particularly useful in barrier applications, such as a house wrap.

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