INNOVATION | CAPS & CLOSURES


better organoleptics will meet needs for caps that have no effect on the taste of packaging contents, which is particularly important for bottled water. The company is also using renewable feedstocks in its production of polyethylenes and polypropyl- enes. Properties of the partly bio-based plastics are identical to those made from non-renewables alone.


Above: StackTeck Systems has introduced a 1 × 4 flip-top closure mould featuring a servo actuated IMC mechanism


Right: RPC Bramlage has launched a lotion pump that combines a standard system with a customisable outer body


Right: SABIC has developed a new multi- modal grade of HDPE with good organo- leptics for caps and closures


inserting the label into each cavity before the melt is injected into the mould, it has to retract and then re-enter the moulding area to remove all 24 lids, closing them before the plastic hardens. StackTeck Systems has introduced a 1 × 4 flip-top closure mould featuring a servo actuated IMC mechanism. Compared to a conventional IMC mould with a cycle time delay of 1.5s for closing, this servo mechanism actuates in 0.35s, representing a 75% reduction in closing time. The company has also used a KoolTrack mould stack design for optimal cooling, resulting in reduced hold/cool time and an overall cycle time 3-4s faster than a conventional flip-top closure mould. The servo drive technol- ogy is suitable for unscrewing and flip top caps through a simple interface to the moulding machine. The mould can include its own stand-alone servo control cabinet and pendant which uses a standard Euromap robotic interface to the injection machine. SABIC has developed a new multi-modal grade of HDPE with good organoleptics for caps and closures. The company says that it combines environ- mental stress cracking resistance (ESCR) with good flow, allowing cap manufacturers to design very lightweight closures. SABIC HDPE CCX027C polymer is claimed to exhibit strong shear thinning, which means that even though it has a relatively low melt flow index (MFI) of 0.8 g/10 min, 2.16 kg, its flow characteristics during injection moulding are similar to those of a unimodal HDPE with an MFI more than three times higher.


SABIC adds that it is addressing several trends in the market related to sustainability issues. Improvements to ESCR and physical properties like stiffness and impact strength will enable


extra lightweighting. In addition, reductions in required processing temperatures will help processors save energy and cut cycle times and


20 INJECTION WORLD | April 2019 www.injectionworld.com


RPC Bramlage has launched a lotion pump that combines a standard system with a customisable outer body. The Lotus pump delivers good functionality and user-friendly operation for a wide variety of cosmetic and personal care products while enabling manufacturers to create an indi- vidual appearance for effective brand identity and maximum on-shelf appeal. The pump offers a 1.5ml dose that is achieved with minimal effort by the consumer. Each bottle is created in consultation with the customer to meet individual product characteristics, ensur- ing the lightest weight of bottle, while still providing the required levels of product protection and compatibility. Pump heads can be supplied in the lock down position to maximise shipping and there is a lock up position when there is a need to travel. A choice of decoration options, along with special finishes such as soft touch, water droplet, rubber and gloss effects, ensure each bottle is fully personalised in line with particular brand objectives, creating a premium image on-shelf. The company’s Twist-Up airless dispenser has been selected by leading Belgian cosmetics company Mylène to package a new face cream


and serum as part of its Detox complete facial care range. The Twist-Up dispenser combines effective protection of the products’ natural ingredients, on-shelf appeal and maximum convenience for the


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