Ravenwood launches linerless silicone content calculator

Ravenwood Packaging has launched an online Silicone Weight Calculator that allows label converters and brand owners to calculate the silicone content of linerless labels as a percentage of total label weight, providing measurable data for PPWR and EPR compliance assessments.

The calculator uses label dimensions, material weight and the number of silicone lines to determine the actual silicone weight on an individual label. Using the example of a 64.77 mm linerless label weighing 3.69 g with three 16 mm silicone lines and a coating weight of 1.5 gsm, the tool calculates the silicone content at 0.00466 g, equivalent to 0.126 percent of the total label weight, which is below the 0.3 percent threshold for a green classification under the relevant RAM methodology.

Ravenwood said its traditional wraparound linerless formats, including C, D, slideable and full-wrap formats, all achieve a green classification when assessed using the calculator. The tool sits alongside the company's existing CO2 Savings Calculator, which compares the potential CO2 savings of linerless labels with those of self-adhesive alternatives.

'We wanted to take the uncertainty out of the calculation and give the industry a practical tool that can be used to assess our sustainable labels,' said Dan Coe, director of Ravenwood Packaging. 'The results demonstrate that the silicone release coating used in our linerless formats represents a very small proportion of the overall label weight.'