FREMGANGSMAATE FOR TERMISK SVEISNING AV ET ELEMENT SAMMENSATT AV ET FLEKSIBELT MYKNET TERMOPLASTMATERIALE TIL EN VARE AV MYKNET TERMOPLASTPOLYMERSKUM

摘要

Disclosed herein is a tethered earplug construction comprising a pair of plasticized thermoplastic foam earplugs tethered together by one or more flexible plasticized thermoplastic cord elements. Attachment of the cord element to the earplug is achieved by ultrasonic welding.