Prilled compounded thermoplastic roadway marking materials
US10907051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2019 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Jan 11, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/265
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
This invention provides a convenient method of forming and applying a thermoplastic material for roadway markings, comprising: obtaining individual components of a thermoplastic composite material suitable for roadway markings; mixing and heating the individual components to produce a fully compounded form of the thermoplastic composite material; solidifying and prilling the fully compounded form of the thermoplastic composite material to produce a plurality of thermoplastic prills; on a marking vehicle or mobile apparatus, introducing the thermoplastic prills to an on-board melter to produce a liquid phase of the thermoplastic prills; and applying the liquid phase of the thermoplastic prills to a roadway, thereby marking the roadway. Compositions and systems are also described. Surprisingly, prills melt in approximately half the time as the powder/granular form. Also, the melter can be operated at lower temperature, leading to less discoloration of material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.