Abstract: A method of joining two sections of metallic pipe (1), each of which has a thermoplastic polymer lining (3), to form corrosion resistant joints is disclosed. The method comprises inserting a sleeve (10) into each section of two pipes (1) that are to be joined so as to form a fluid tight seal between the liner (3) and the sleeve (10). The end of each section of pipe is then bevelled, and the two sections are welded together so as to form a corrosion resistant weld between each section of pipe and each sleeve and between each of the sleeves. The method is particularly useful in the lining of metallic pipe in the field e.g. in pipelines, without having to form flange joints.

Abstract: An improved piston for a pouch dispenser is disclosed. The dispenser is adapted to contain a pouch of flowable material, and has a lid to keep the pouch within the dispenser and a piston which is adapted to move toward the lid and press against a first end of the pouch, and push the flowable material out of the pouch through a hole in the second end of the pouch. The piston has a peripheral lip extending towards the second end of the pouch. The peripheral lip extends for a length sufficient to cause the film from which the pouch is made to pleat in a direction transverse from which the pouch is made to pleat in a direction transverse to the longitudinal axis of the dispenser when the material in the pouch is squeezed from the pouch by the pressing action of the piston. The lid and piston are adapted to allow the peripheral lip to nest with the lid and to prevent the pleats from hindering essentially all of the material from being squeezed out of the pouch.

Abstract: This invention relates to an injection moulding process for the manufacture of multi-layered articles, especially articles having barrier properties. The process includes clamping a thermoplastic film over the cavity of a mould of an injection moulding process, the film being capable of being stretched. The film is then stretched within the mould by inserting the core of the mould, preferably using a core in which a central part enters the mould and partially stretches the film prior to the remainder of the core entering the mould. The mould is then closed, excess film is trimmed off and polymer is injected into the mould cavity. The resultant article is a multi-layered injection moulded article which, depending on the characteristics of the film and injected polymer, may have barrier properties to oxygen, liquids or the like that are superior to articles moulded from only the polymer. The process is particularly useful in the moulding of containers having a depth:width ratio of at least 0.5.