Tip No. 101 Drying and cross linking piece goods, e.g., flock print on sports wear

摘要

Unless plastisol pastes are being used, one first has to remove the water fraction of the print pastes or flock adhesive coating / layerilms using a drying process. The cross linking, and its associated film formation of binder systems with the desired fastness properties, cannot begin until drying is complete. Low-temperature systems like PRINTPERFEKT SVB 300 D-N, PRINTPERFEKT BLANC SV-N and TUBVINYL LC 274 H-N need an ambient temperature > 20℃ and relative humidity < 60% for the chemical cross-linking reaction. Reaction time ranges from 7 to 14 days, during which time air exchange must be possible, i.e., packing the material in plastic bags or other impermeable materials would interrupt the reaction.