Process for forming a divided conduit
US10594126B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2017 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Mar 26, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/32
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for extruding a divided conduit comprising obtaining an extrusion die head, inserting a strip-shaped substrate into the extrusion die head such that the strip shaped substrate is located within the tip gap and extends at least partially out of the tip gap such that the longitudinal edges are located in the die gap, and flowing molten polymer through die gap, encapsulating the longitudinal edges of the strip-shaped substrate in molten polymer. The extrusion die head contains a tip region and a bushing. The tip region contains at least 2 tips separated by a tip gap. The bushing extends around the tip region and the distance between the tip region and the inner surface of the bushing is defined to be the die gap and the die gap varies around the bushing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.