Smart Molding International 3-2022

34 molding technologies smart_molding international 3/2022 S tackTeck Systems Ltd., a global manufacturer of high volume injection molds, has success- fully delivered a new series of plas- tic can molds for KW Container with the use of a revised and improved 5 piece collapsing core technology. The new design features improvement of the core collapsing mechanism, al- lowing for the first ever one-piece paint can molded using StackTeck’s collapsing core technology including all water-cooled components. Da r r en S c ho l l , COO o f KW Container, stated: “This single piece can replaces a 2-piece design which had many manufacturing steps. The new approach simplifies production to a single step of molding, cutting down several steps in the way we used to produce these cans. By mold- ing it all in one piece, we are produc- ing a better part with reduced costs in floor space, energy, and there is a carbon footprint reduction. Because the process of bonding two parts has been eliminated, the overall produc- tion yield has improved as well.” An added benefit of this new ap- proach is that the plastic cans can be molded in one step in one injec- tion machine, instead of having to be molded in 2 separate parts in 2 different machines. David Bacon, General Manager KW Containers commented: “We are using this technology to pro- duce cans in sizes of 0.5 Liter, 1 Li- ter, and 1 Quart round cans. We are very pleased to have found a more sustainable option to produce our cans that use recycled PP material supplied by our sister company, KW Plastics. StackTeck has impressed us with the advanced cooling in these molds, which allows us to maintain a fast cycle time.” The 5-piece collapsing core is a technology that StackTeck offers to customers looking for plastic part design freedom in certain applica- tions that require large undercuts with dramatic thin-walling capabil- ity and cycle time improvements, as compared to single piece core mold designs. Jordan Robertson, VP Busi- ness Development and Marketing commented, “StackTeck has been delighted to work with KW as a leader in the in- dustry. The wide range of sustainable benefits associated with this new method of manufacturing is a natural complement to their en- vironmentally friendly approach of- fering an entire product line made from recycled materials.” About StackTeck Systems Limited StackTeck, with over five decades of mold building innovation, is a leading source of high productiv- ity tooling solutions for the injec- tion molding industry. StackTeck supplies a wide range of injection molds and IML automation used to produce plastic parts in applications such as caps, closures, medical, PET preforms, and thinwall packaging; as well as complete system integra- tions including IML. StackTeck has dedicated R&D, testing and part sam- pling facilities, in addition to plastic part design, prototyping, engineer- ing, and manufacturing capabilities. StackTeck Systems Ltd. is located 8 km north of Toronto’s Pearson Inter- national Airport. StackTeck www.stackteck.com KW Сontainer achieves molding of paint cans in one step The new injection mold design features improvement of the core collapsing mechanism, allowing for the first ever one-piece paint can molded using StackTeck’s collapsing core technology including all water-cooled components. 1×8 – 5 piece collapsing core mold (picture: StackTeck) Three sizes of plastic paint cans molded with recycled PP (picture: KW Container)