I suggested that the PVA and Acrylic mixture sizing could be used.

I concur with Cheng, Use 100% PVA alone or 100% Acrylic size or their mixture. The adhesiveness of PVA or Acrylic size is better than when used with starch. Starch size is best suited when its Polycotton or Polyviscose. Optimization is again necessar depending on mill conditions.

Thanks Sir K.B & Joseph 

Normally, the polyester is not sized , especially if it is filament form. Why you want to size it?

 Sir Ladhari, Actually it is spun polyester, it has hairiness value.