Other Uses
Safety razor blades are traditionally wrapped in wax paper to make handling them less dangerous. Wax paper can also be used to make long lasting paper boats because of its high resistance to water.
From the early 1950s to the mid-1990s, wax paper was used as a common wrapping for sports card packages (Oh-Pee-Chee, Topps, Donruss, etc.). It was notorious for leaving wax markings on the back card where the wax paper was heated to be sealed. Wax paper was used as a way to keep the enclosed piece of bubble gum protected.
In the mid-1990s, sports card manufacturers stopped including pieces of bubble gum in packs of sports cards, thus ending the need for wax paper packs. Plastic (mylar) or other plastic/paper blends were used from then on.
Wax paper is also commonly used to attach pattern pieces to fabric while cutting it for sewing. One presses an iron over the wax paper briefly and attaches it to the cloth, making it easier to trace while cutting.
Wax paper's particularly high dielectric strength makes it a practical electrical insulator, although modern materials have surpassed and mostly replaced it. Common applications are coil winding separators and capacitor dielectrics, and other applications requiring resilience against a potential difference up to the order of a few thousand volts per layer.
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