Paper & Pulp
Talc is a natural hydrated magnesium silicate – H2Mg3(SiO3)4, it is very soft, is low abrasive, have platy particle structure, is chemically inert and organophilic material. These are reason why many paper mill use this filler. The uses of talc as a paper filler is suitable for two things, paper smoothness and good spool formation.
As talc is a platy particle structure, it helps improve the paper smoothness. The low coefficient of friction of talc helps to produce a large spool with constant tension. Talc is an organophilic, so absorbs impurities from the process, such as pitch, resin particles.
Hence talc is used as a cleaner of the wet-end system of the paper machine. Talc also prevents agglomeration. Therefore improve paper machine runnability. NGF Talc helps in achieving the following during Paper and Pulp Manufacturing
- Less wire abrasion hence extends life time of the wire cloth in paper machine compare with the GCC and PCC.
- Improve dewatering.
- Lower effect on the paper strength compare with other fillers.
- As talc is organophilic it is helps to reduce dye consumption and two-sidedness in colored paper.