公开(公告)号：US20240217156A1

公开(公告)日：2024-07-04

申请号：US18147137

申请日：2022-12-28

Applicant: Dura-Line LLC

Inventor： Sam Lukubira ,  Caleb Michael Spradling ,  Gordon Mikel Roark ,  Arturo Valencia

IPC: B29C48/21

CPC classification number: B29C48/21 ,  B29C2791/003 ,  B29C2948/922 ,  B29K2023/065

Abstract: A conduit including a first concentric layer and a second concentric layer that are coextruded, the first concentric layer having a higher melt viscosity than the second concentric layer, and the first concentric layer being of a thickness of at least 3% of a combined thickness of the first and second concentric layers, is provided. Conduits further including third and fourth concentric layers and conduits further including at least one microduct within a lumen defined by the first concentric layer are further provided.