Abstract: A machine wraps packages such as bales of crumb rubber, or other containers of goods, into a protective synthetic resin film bag or cover. The machine is provided with a set of movable jaws each having a heat-sealing frame assembly having improved heat transfer characteristics. The heat-sealing frame assembly is composed of heat sealing units which have enhanced heat distribution and reduced cold spot or no-seal areas, and also reduced hot spot burn-through. Heat transfer from the heat sealing elements to the remaining portions of the baling assembly is also reduced.

Abstract: A improved service life baler press assembly including a number of novel press chamber and ram assembly components formed of a relatively hard material, such as a thermoplastic polymer (e.g., acetal resins) or any other suitable material having low static and dynamic coefficients of friction. Press chamber components according to the invention include press wall liners coupled to the press chamber walls. The press wall liners are manufactured of the thermoplastic polymer, and are disposed between the press walls and a ram head during periods of compression. The low static and dynamic coefficients of friction of the thermoplastic polymer material allow the ram head to move inside of the press chamber without damaging the walls of the press chamber. In addition, one embodiment of the present invention includes a ram head cover also composed of a thermoplastic polymer or other suitable material. The ram head cover reduces wear damage to the press wall liners.