| 摘要 |
A tubular container is formed by extruding, coextruding, and/or laminating a sheet of thermoplastic polymer having one or more discrete layers of polymer, trimming the sheet into one or more continuous strips, heating and rolling the or each strip on a mandrel into a continuous tube, and joining the adjacent edges of the rolled strip together to form the completed tube. Sections of the tube are cut to length and closed with end closures to form containers. The sheet may comprise a barrier layer of polymer or metallic foil and adhesive layers interior of the outer layer. The end closures are attached by spin or friction welding. |
