Input and output fiber for fiber opening machine

What is the difference between the input and output fiber for fiber opening machine?

• Input fiber: staple polyester fiber shorter than 100mm, crimp, not fluffy.
• Output fiber: Loosen fluffy, good hand filling, elasticity, durable.

Polyester become fluffy through fiber opening machine, and ready for pillow cushion filling or plush toy stuffing.
So finished pillow cushion, plush toy is very soft and hand good hand feeling.