As we all know , the production of wool Book cover wholesale the time to use sulfuric acid plant to remove impurities in the wool fibers , as well as temperature and concentration of sulfuric acid fulling it will have some impact . Today we have with everyone from the concentration aspects and discuss this issue.

Wool fiber by the low concentration of the acid treatment can improve fulling wool fibers . Therefore, the system Book cover wholesale factory production , some units with 4 to 6% , not exceeding 8% sulfuric acid treatment Book cover wholesale blanks to improve milling efficiency. Book cover wholesale blanks in different concentrations of sulfuric acid solution soak for 45 minutes, Book cover wholesale wool fulling that Book cover wholesale knot efficiency will vary.

Some system Book cover wholesale plant in the production of civilian used when printing Book cover wholesale tannic acid Book cover wholesale billet local preprocessing , which uses tannic acid can prevent the performance of the first absorbing dye wool for local processing , and then dyed , can the portion of the treated dye absorption is not on , and the rest dyed to achieve the purpose of printing .