... widely used for teabag and coffee filter paper tea is heat sealable, environmental-friendly bleached1, Weight range: 16gsm-40gsm 2, Sepcification: width ... tea, Chinese herbal medicine, condiment, desiccant and so on heatseal filter paper ITERMSRESULTSGrammage 25+/-1GSMColor WhiteTensile strength wet36 kPaTensile strength dry ... Potential 440g/50mmHeatseal ability 120 oC to 160 oC filter paper tea