How many tons of bags/flat yarn strength does not decrease when calcium carbonate masterbatch is added depends on the quality of calcium carbonate masterbatch added. For new materials, the finer the particle size of the calcium carbonate masterbatch, the more added; the more carriers in the calcium carbonate masterbatch, the more added; the better the coating of the calcium carbonate masterbatch, the more added. Under normal circumstances, the particle size of calcium carbonate masterbatch is about 325 mesh, almost no coupling agent is used for coating, only paraffin and other pellets are used, and there is little or no carrier. If the amount of addition exceeds 3%, the strength may decrease; calcium carbonate The particle size of the masterbatch is about 425 meshes. There are not many coupling agents used. The coating effect is average. The carrier content is generally about 5%. If the addition amount exceeds 5%, the strength may decrease; the particle size of the calcium carbonate masterbatch is all in the range. About 800 mesh, at most 1000 days, the coupling dose is sufficient, and the coating effect is good. The carrier is above 7%, and the added amount may reach more than 7% without decreasing the strength, or even about 9% without decreasing the strength.
If you want to ask how much calcium carbonate masterbatch is added to the regenerated material without reducing the strength of the flat yarn, it is more difficult to estimate, because some recycled woven bags already contain calcium carbonate masterbatch.
The calcium carbonate masterbatch used by the company inquiring about the problem cannot be crushed by fingernails, indicating that there is a carrier in it, and the content is quite large; it is broken into pieces with teeth, not powder, and relatively sticky and elastic, indicating the use of coupling agent The coating is better; the broken pieces are carefully crushed by hand, and the feeling is more delicate, indicating that the calcium carbonate can stay above 400 mesh. Comprehensive evaluation, the masterbatch is a middle-to-upper grade material, and the addition amount is 7% to 8%, and the strength of the flat yarn does not decrease.