Stretch rod for a stretch blow moulding machine A stretch blow moulding machine stretchrod comprising an elongated rod and a tip fixed to the end of the elongated rod, the tip defining a backside and an arcuate stretching surface forengaging a preform, the backside comprising a surface variation to increase the surface area of the tip backside. The present blow molding machine comprises a method and apparatus for constructing a structurally sound PP container with barrier protection having a low haze value. The present invention also comprises a preform for reheat stretch blow molding a PPcontainer with barrier protection and a low haze value. It is one objective of the present invention to provide a container having a layer comprised of PP and a layer comprised of barrier material adjacent to the PP layer wherein an adhesive isincorporated into at least one of the PP layer and the barrier layer for bonding the PP layer directly to the barrier layer. It is an additional objective of the present plastic blowing mold to provide multilayer plastic containers having oxygen, carbon dioxide and moisture barrier protection with a haze value of less than 25%. It is another object of the present invention to provide containers having a layer of enhanced PP and a layer of a barrier material directly adjacent thereto. It is another object of the present invention to provide containers having a layer of a PP and a layer of enhanced barrier material directly adjacent thereto. It is another object of the present blow molding machine to provide a commercially acceptable, cost effective container with a low haze value having a layer comprising PP immediately adjacent to a layer comprising a barrier material. It is an additional object of the present invention to provide barrier PP containers meeting the above objects of the invention and having the high structural integrity necessary to withstand hot-filling of commercial food products. It is yet another object of the present blow moulding machine to provide a wide tipped blow molding stretchrod configured with fins, holes or other elements increasing its surface area and, therefore, its capability of high rates of heat convection.
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