초록 ▼

Filament-like polymer crystal fibers are prepared from a solution of a crystallizable polymer, such as polyethylene or polypropylene, in a vessel containing a spinning rotor, preferably having a slightly roughened surface, according to the disclosed invention. The fiber thus formed is taken up and r

Filament-like polymer crystal fibers are prepared from a solution of a crystallizable polymer, such as polyethylene or polypropylene, in a vessel containing a spinning rotor, preferably having a slightly roughened surface, according to the disclosed invention. The fiber thus formed is taken up and removed at a rate equal to the crystal growth rate. The longitudinal crystal growth rate is of sufficient speed for commercial application while at the same time yielding fibers of outstanding mechanical properties.

대표청구항 ▼

A process for preparing continuous filament-like crystals of a crystallizable polymer comprising the steps of: (a) providing a solution of a crystallizable polymer in a container therefor in contact with a rotating surface; (b) rotating said solution while growing a seed crystal of said polymer in t

A process for preparing continuous filament-like crystals of a crystallizable polymer comprising the steps of: (a) providing a solution of a crystallizable polymer in a container therefor in contact with a rotating surface; (b) rotating said solution while growing a seed crystal of said polymer in the flowing solution and allowing the seed crystal to grow longitudinally with respect to the direction of rotation of said polymer solution; and (c) removing the thus grown polymer in the form of a continuous filament from the polymer solution at a rate substantially equal to the polymer crystal growth rate, wherein: (i) the longitudinal growth takes place at the rotating surface which surface is moving in the direction of the growth of the crystal, and (ii) at least about 15 cm of the filament-like crystal thus produced contacts said surface over a length of at least 15 cm thereof.