Wedge-shaped multi-layer interlayer with outer skin layers of varying thickness

A wedge-shaped multi-layer interlayer comprising:

• a first polymeric layer having a wedge shape;
• a second polymeric layer having a wedge shape;
• and
• a third polymeric layer between said first and second layers,
• wherein said first and second layers each have a glass transition temperature (Tg) that is at least 10° C. higher than the Tg of said third layer,
• wherein, at one or more locations on said interlayer, said second layer is at least 10 percent thicker than said first layer, and wherein at least one of the first and second layers has a thickness of not more than 0.30 mm at one or more locations on the interlayer;
• wherein said interlayer is a tri-layer interlayer, wherein each of said first, second, and third layers are formed of a plasticized polyvinyl acetal resin, wherein the third polymeric layer has a plasticizer content that is at least 5 parts per hundred resin (phr) and/or not more than 75 phr different than the plasticizer content of the first and/or second polymeric layers, wherein the third polymeric layer has a glass transition temperature (Tg) that is less than 8° C.