Also known as ultrasonic bonding and pinsonic bonding.Sonic bonding uses high frequency sound to generate localized heat through vibration and thereby cause thermoplastic fibers to bond to one another. Specially designed “horns” that vibrate at ultra-sonic frequencies adjacent to an “anvil”, often a hardened, patterned roller, with a substrate or composite passing between the horn and the anvil. The energy created by the horn imparts the anvil’s pattern onto the substrate creating bond points that alter the aesthetics and physical characteristics of the material.

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