Gel Spinning Polyethylene
“High strength polyethylene multifilaments obtained by so-called "gel spinning method" using ultra-high molecular weight polyethylenes as raw materials are known to have such high strength and high elastic modulus that any of the prior art has never achieved, and such high strength polyethylene multifilaments have already been widely used in various industrial fields “
“The present invention relates to novel high strength polyethylene multifilaments applicable to a wide range of industrial fields such as high performance textiles for sportswears and safety outfits (e.g., bulletproof/protective clothing, protective grooves, etc.), rope products (e.g., tugboat ropes, mooring ropes, yacht ropes, ropes for constructions, etc.), braided products (e.g., fishing lines, blind cables, etc.), net products (e.g., fisheries nets, ball-protective nets, etc.), reinforcing materials or non-woven cloths for chemical filters, buttery separators, etc., canvas for tents, etc., and reinforcing fibers for composites which are used in sports goods (e.g., helmets, skis, etc.), speaker cones, prepregs and reinforcement of concrete.”
(Sakamoto et al, US Patent 7.811,673; 10/12/2010)
Gel Spinning
Polyethylene
Processing
Solution Spinning
Spinning
Recent US Patents
10/12/2010
7,811,673
High strength polyethylene fiber
Sakamoto et al of Toyo, Japan has produced high strength polyethylene fibers by solution spinning 20 to 30 wt%solutions of ultrahigh molecular weight polyethylene in solvents such as decalin or tetralin into water followed by drawing at least 15 time its original length. (RDC 1/10/2011)