Found this on the internet and thought it gave some good information on batik fabric. New needle needed.
Choose a sewing machine needle with a sharp point. Needles made for work with denim, or a very fine, sharp point such as the Microtex Sharp needle are good choices for working with the high thread count of batik fabrics.
Use light to medium weight silk, cotton or polyester thread when sewing batiks. Using the proper weight of thread will allow the finished piece to drape and form without bulkiness at the seams and hems