Extrusion process and assembly for producing a roof ditch molding having a bright film exterior layer
US11969930B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2021 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Nov 30, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R13/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extrusion process for creating a roof ditch molding including forming a main body from a plastic material in a first stage extrusion, conveying the main body through a stacked array of die plates and into a first stage cooling tank, and communicating the main body from an outlet of the first stage cooling tank to a second stage extruder with crosshead die for applying a skim film bonding layer to the main body. Additional steps include applying a decorative layer over the skim bonding layer, communicating the main body to a third stage extruder with cross head die for applying wing portions in partially overlapping fashion along opposite side edges of the decorative layer and drawing the completed ditch molding through a second stage cooling tank prior to conducting one or more finishing operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.