Mechanical pulping
HTCTMP (High Temperature ChemiThermoMechanical Pulp) > Link to data sheet HTCTMP, is a further development of the traditional CTMP production process. In the CTMP production process, wood chips are first impregnated with chemicals (sulfite and/or sodium hydroxide) and preheated at 90 to 150 °C to help soften the adhesive material (lignin) between the fibers.