Abstract: Optical interlayers, laminated composites and improved methods for manufacturing the optical interlayers and laminated composites are provided. An optical interlayer film comprises at least one surface having an embossed surface pattern having at least two channels extending in at least two non-parallel directions. The channels have a depth of greater than about 20 ?m. The surface pattern allows for the removal of air between the interlayer and the outer laminate sheets, thereby establishing the requisite seal therebetween while minimizing premature edge sealing. The laminated composites are particularly useful for safety glazing in a variety of applications, such as automobiles, airplanes, trains, or other modes of transportation, display devices, windows in homes and other buildings, building facades, cabinets, and/or weight bearing architectural structures such as stairs and floors.

Abstract: Optical interlayers, laminated composites and improved methods for manufacturing the optical interlayers and laminated composites are provided. An optical interlayer film comprises at least one surface having an embossed surface pattern having at least two channels extending in at least two non-parallel directions. The channels have a depth of greater than about 20 ?m. The surface pattern allows for the removal of air between the interlayer and the outer laminate sheets, thereby establishing the requisite seal therebetween while minimizing premature edge sealing. The laminated composites are particularly useful for safety glazing in a variety of applications, such as automobiles, airplanes, trains, or other modes of transportation, display devices, windows in homes and other buildings, building facades, cabinets, and/or weight bearing architectural structures such as stairs and floors.

Abstract: Finishing a seal assembly as a unit is proposed, which prevents alignment of the end gaps of the annular body and the annular ring of the seal assembly, provides the ability to manufacture the seal assembly to very low tolerances, and establishes virtually perfect parallelism between the upper and lower surfaces of the seal assembly. A finishing process is characterized by lapping a seal assembly as an assembled unit with a lapper using gritted oil as a polishing medium.