This involves melting the polymer and pushing the resulting liquid through a hollow needle, out of a hole in the needle's tip and onto a spinning drum, where it cools and solidifies.

其中包括熔化聚合物，将产生的液体通过一根空心的针，从针尖的洞里出来，放到旋转的圆筒上，在那里冷却并凝固。