The first US commercial polyester fiber production was by Dupont Company in 1953. At that time, the polyester fibers were primarily used for fabric production. There was a growing movement to develop plastic strappings to replace the steel strappings that were widely used then.Some time later in the 1950’s, the glue bonded polyester cord strapping was developed.Joint Strength In all applications, strappings have to be joined together into a loop. The joint is also the weakest link in the loop. The common jointing methods are heat seal, crimps, seals and buckles. For the polyester cord strappings , buckles are the only means of forming strong joints. There are two main types of buckles being used for cord strappings and lashings: the composite strapping was developed. By the 1990’s, cord strappings have made major technical advances to largely replace steel strappings in most applications.
