{HEAD ~ The method} typically involves dissolving polyisobutylene in a solvent such as hexane to form a tackifier solution, soaking the substrate in the tackifier to produce a preform, and then drying {TAIL ~ the preform} to produce the cleaning medium 
typically involves drying
{ HEAD ~ The method } typically involves dissolving polyisobutylene in a solvent such as hexane to form a tackifier solution , soaking the substrate in the tackifier to produce a preform , and then drying { TAIL ~ the preform } to produce the cleaning medium
HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH