... the process.2. Permeable rate.3. Without any non food additives, it can satisfy the requirements of ... imported materials (long fiber pulp, hemp, etc) heat sealing fiber, and all of the food is high5 ... . Heat sealed type heat sealing fiber replaced surface coating adhesive: health ... 125mm, 132mm, 140mm, 145mm, 160mm, 180mm, 200mm, 220mm. Non-heat sealable teabag filter paper