Coated mining bolt

Abstract

A mine support includes an elongate metal member and a coating comprising post-consumer recycled thermoplastic disposed on the member. The thermoplastic may include post-consumer recycled poly(ethylene terephthalate), and the coating may be an injection molded coating. A first layer of the coating may be provided with a thickness at least about 0.1 mm and a crystallinity between about 16% and about 30%, and a second layer of the coating may be provided with a thickness at least about 0.1 mm and a crystallinity between about 6% and about 14%. Either the first layer or second layer may contact the elongate metal member.

What is claimed is: 
     
         1 - 75 . (canceled) 
     
     
         76 . A method of forming a mine roof support comprising:
 placing an elongate metal member in a mold, the member having a first temperature at an outer surface thereof;   injecting polymer into the mold, an inner surface of the mold having a second temperature different from the first temperature;   forming a first semi-crystalline layer of the polymer proximate the outer surface of the member;   forming a first substantially amorphous layer of the polymer proximate the inner surface of the mold.   
     
     
         77 - 98 . (canceled)