The structure, operating principle and safe protection ol chips conveying system for spinning production line were analysed in this paper.

Preparation of the antibacterial reagent and antimicrobial polyester chips;

The results show that the melting-point of the copolyester chips,synthesized by the optimal proportion modifiers,p-terephthalic acid(PTA) and ethylene glycol(EG),have performances similar to common polyesters such as thermal behavior,rheological behavior,is about 110℃,which accord with the requirements of t.

Introducing and analysing the functions of the static mixers,putting forward the imple- mentation plan in the polyester chips production.

In order to develop production technology of pet chips for DSP industrial fiber, the method suitable for measuring the viscosity of PET chips is established.

ith the analysis of the production data and experience,the relationship between the content of the carboxyl end groups in PET chips and the operation conditions was studied.

The good quality of PET chips viscosity increasing by tumbler could be obtained through optimum process parameters,enhanciny management and eliminating related problems.

Improvement on the determination methods of carboxyl end group value in fiber grade PET chip;

Error causation in intrinsic viscosity analysis of PET chip;

Analysing standard of GB/T fiber grade PET chip and standard sample of fiber grade PET chip;

MTA introduced in filament-grade polyester chip production;

Simultaneous Determination of Titanium and Iron in Polyester Chip by ICP-AES Method;

Some measures for improving dryness of the polyester chip are introduced.