US Patent 10486880 Fitment with ethylene/α-olefin multi-block copolymer

A fitment is provided and includes a top portion, a base, and a channel extending through the top portion and the base for passage of a flowable material. The base includes a pair of opposing sidewalls. The sidewalls extend around the channel. The sidewalls are joined together at opposing ends. The fitment further includes at least one sealing rib extending along the sidewalls. The sealing rib includes an ethylene/α-olefin multi-block copolymer.