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公开(公告)号：US11076995B2
公开(公告)日：2021-08-03
申请号：US16643153
申请日：2018-08-30
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： James D. Brown , Feng Cai , Robert C. Coffin
Abstract: An earplug assembly and method of forming the same is described. The method includes uniaxially stretching a cord formed of copolymer including ethylene segments and vinyl acetate segments to form a cold-drawn cord. The cold drawn cord has an elongation to break of 250% or less. The method then includes fixing the cold drawn cord to an earplug.
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