The Centrifugal Drum Spinning Method and the Toyobo's Air-vortex Spinning System

Composite Fibers from Recycled Plastics Using Melt Centrifugal Spinning

New methods are being developed to enable the production of value-added materials from high-volume, low-cost feedstocks arising from domestic recycling streams. In this work, recycled bottle-grade polyethylene terephthalate, polystyrene, and polypropylene were spun into fibers from the melt using a centrifugal spinning technique. Mono-component fibers and 50/50 blends of each polymer and a 33/3...

The spinning ball spiral

We discuss the trajectory of a fast revolving solid ball moving in a fluid of comparable density. As the ball slows down owing to drag, its trajectory follows an exponential spiral as long as the rotation speed remains constant: at the characteristic distance L where the ball speed is significantly affected by the drag, the bending of the trajectory increases, surprisingly. Later, the rotation ...

Spinning the Threads

The System of Two Spinning Disks in the Torus

We study the system of two spinning disks in the torus. We show how to reduce this nonhamiltonian system to a 3 dimensional measure preserving reversible map. We establish that, in contrast to the case of elastic collisions, this system may have periodic orbits with all Floquet exponents on the unit circle. We would like to thank Eugene Gutkin and Dave Levermore for helpful and enlightening dis...

Polygonization by the Edge Spinning

This paper presents a new method for polygonization of implicit surfaces. Our method put emphasis on the shape of triangles of the resulting polygonal mesh. The main advantages of the triangulation presented are simplicity and the stable features that can be used for next expanding. The implementation is not complicated and only the standard data structures are used. This algorithm is based on ...