| 摘要 |
A window shade for use with a window shade system comprising an operable roller for rolling and unrolling the shade. The window shade comprises a flexible sheet that comprises a decorative fabric layer and a sound attenuating layer, such as a polymer film with filler material or mass loaded vinyl. The window shade system comprises an operable roller mounted at the top portion of the window opening; first and second side casings attached to respective sides of the window opening, each side casing forming a channel for receiving respective first and second opposing side edges of a window shade. Typically, the shade system also comprises a motor operatively connected to the roller such that the roller rotates about its longitudinal axis in response to the operation of the motor. The shade system may also comprise a second roller and second window shade comprising a decorative fabric layer, and optionally a sound attenuating layer.
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