Ropaque NT-2900 Opaque Polymer for BLUE 4EST Thermal Paper

Organization: The Dow Chemical Company
Co-Developer(s): The Koehler Paper Group
Year: 2017

Ropaque NT-2900 Opaque Polymer for BLUE 4EST Thermal Paper is a new thermal paper technology that eliminates chemical developers and dyes present in current thermal paper. Regulatory and consumer concern over chemical developers is driving a search for replacement chemicals. These technology takes a completely different approach and eliminates the chemical developer entirely. Air-filled, reflecting spheres are chemically produced from otherwise clear polymers by precise control of particle size and void diameter. A layer of these polymer spheres effectively mask or hide an underlying colored layer. Exposure to heat collapses the voided particles making the colored layer visible. The resulting paper is compatible with existing thermal printers and, unlike conventional thermal paper, creates an irreversible image. Direct thermal paper is used for many applications, including point-of-sale receipts, tickets, tags and labels. Direct thermal printers are widely used because they are highly reliable, require very little maintenance and offer high image resolution.