MCG Industries, a South African provider of plastic transport packaging serving the beverage, brewing and dairy industries, has purchased three large-tonnage MX 1000-17200 injection molding machines from KraussMaffei Group of Munich.

The company decided to use a novel two-cavity mould, and therefore, picked mould maker Schoeller Allibert and KraussMaffei’s injection moulding machine. The company aims to get more output at lesser cost while not hampering the quality or user-friendliness or durability.

At first, MCG was planning a mould with two cavities, just like the one it uses for transporting crates for brewery products like beer. Nevertheless, high requirements called for a unique injection moulding machine. The MX 1000-17200 was best suited since it allows for proper utilisation of clamping forces and platen dimensions. MCG will get a training concept along with on-site service.

Lowering energy consumption

According to KraussMaffei, the transport packaging manufacturers in South Africa are experiencing cost pressure, mainly increasing resin prices and fixed costs, such as those for wages and energy.

MCG needed to ensure low energy consumption and shorter cycle times. And the chosen technical components meet these requirements. The injection unit has an insulating sleeve around it which has the potential to save energy by diminishing the heat-up time by some 20-30%. A cut of up to 20-40% was required in total heat energy.

KraussMaffei’s business unit Logistics/Packaging head, Klaus Zeiler said, “This led to choices such as the HPS barrier screw being installed in the MX machine, providing exceptionally high throughput with excellent melt quality and allowing shorter cycle times, and a 20 percent lower energy consumption as a result.”

A cycle time of the 30s was mentioned by MCG, which is a challenge for product size (424x334x310mm). KraussMaffei could conduct the process at 28s cycle time.

“The combination of a precisely configured machine and a high-tech mould allows us to realize a wide variety of tasks simultaneously, such as short cooling times without warpage or sink marks. And all of two cavities,” said Managing Director at MCG, Ian Victor.

Plasticsinsight, Plasticsnews

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