A horn switch for a vehicle steering wheel includes a frame for mounting to the steering wheel. The disclosed blister sealer comprises a lightweight, tubular frame, detachable legs and a lightweight, modular turntable. 9, comprising at least polypropylene and high-density polyethylene, a second surface having a cling force to the first surface at least greater than about 5 gin, comprising at least a styrenic block copolymer, and a core layer, positioned between the first surface and the second surface, comprising at least linear low-density polyethylene or its blend. One blow mold is assigned to each blowing and calibration mandrel.