| abstract |
Process to generate a water based adhesive by mixing a re-dispersible powder adhesive and water, optionally together with other components, characterized by mixing a re-dispersible powder adhesive, water and optionally other components such that the final water based adhesive contains a re-dispersed powder adhesive in an amount of about 0.5% to 80% by weight and has a Brookfield viscosity (23°C/20 RPM) from about 10 to 250'000 mPas, wherein : the mixing is carried out as a micro-batch or a continuous process with a volume of the mixing chamber of about 0.001 to 200 litres and with a mixing time of about 0.01 to 500 seconds, and the ratio of the diameter of at least one mixer blade to the diameter of the mixing chamber is about 0.50 to 0.99. |