Vinyl sheet article presenting striated color patterns and method of making the same
US5232751A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1991 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Jun 10, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/266
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus (10) is provided for producing vinyl siding (76) having aesthetically pleasing, wood-like striations embedded therein. Apparatus (10) includes processing structure (12) for processing topcoat compound and substrate compound extruders (18, 20) respectively. Acrylic colorant is discharged from feeders (64, 66) into barrel (34) via adapter (72) and thereby mixed with the topcoat compound. The interval of discharge is four seconds every twenty seconds. Adapter (72) utilizes a water jacket to keep colorant cool prior to its introduction into barrel (34) where it experiences a temperature sufficient for melting, usually about 380.degree. F. Due to the interval of discharge and the twenty second period thereof, striations (82) are uniform and continuous in nature so as to simulate wood grain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.