Technology of producing multi - hole superfine denier PET interlaced set yarn with monofilamcnt denier of 0.57dtex by the POY - DTY technology is introduced. Discussions arc made on the polymer chip selection and drying, spinning temperature, melt filtration, spinnertte diameter, quenching lateral blow, spin finish, winding, falese twising and interlacing technologies etc.
Water jet entanglement requires to use new low foaming spin finish. The paper compares the difference between low foaming spin finish and conventional spin finish and also relates the experimental work with new spin finish.
A comparatively comprehensive laboratory evaluation of PET FDY spin finish TF-710 was discussed, in view of the basic characteristics and heat resistance, physical properties of the filaments with finish, as well as the properties of the filaments after sizing. In addition, advanced testing apparatus and evaluation system were introduced in the study.