In Mould Labelling or with the help of static electricity, static placement(static gluing) is the standard in the injection moulding IML industry, thermoforming IML and also the blow moulding IML industry. Instead of conventional methods like decorating end products by printing directly or placing an adhesive label onto the product, the decoration is achieved with a pre-printed plastic polypropylene (PP) label. The pre printed PP label is inserted in the mold and then the molten PP is added to the mould. The label then fuses and the product takes the shape of the mould.
With this method we use the same dummy set-up as in the high-speed Direct IML Charging method for the placement of labels in injection moulding machines but the dummy-core, created with semi-conductive resin(EasyCore) is not connected to a High Voltage but simply to machine earth.
Outside the mould, inside the injection moulding machine, the robot picks-up a single, pre-printed PP label onto a dummy core and the label will be transported (high-speed) into the mould cavity (single or multiple).
Simco-Ion developed a new patented technology called for label placement in injection moulding called Direct IML Charging. This method has the advantage that there is no non-isolated high-voltage inside the mould and we can use a much lower high-voltage for a better adhesion(gluing label) of the labe in to the mould.
How does IML work? In the injection moulding process a pre-printed IML-label is picked up and placed in the mould cavity where it sticks, exactly on the wished position, due to the electrostatic charging. After closing the mould cavities the label will be moulded together with the end-product and comes out as a finished, fully recyclable product. To realise a high reliable, competitive IML-project the choice of an IML-suitable label is of decisive significance. Whether you are an end-user or a robotics manufacturer, Simco can assist you with advice and knowledge in creating the perfect IML solution. Big advantage of the Electrostatic In Mould Labelling IML-process is that the moulds are much easier to build so cheaper to produce compared to the old vacuum technique. Since no vacuum channels through the mold is needed the production process is not interrupted by cleaning these contaminated channels, resulting in high-output, competitive IML production process.
Our IQ Easy Platform offers a complete solution for static control in every industry or production process.
There are three different Charging Methods for In Mold labelling(click to find out more):
A perfect example is packaging of food products and many plastic products for domestic use. Many products are produced with the aid of a static charge. Instead of printing directly or placing a sticky label onto the product, the print is achieved with a pre-printed plastic label. The pre-printed label is positioned into the injection mould and kept in place by a static charge. This way the label will be moulded together with the product shape and come out as a finished product.
How does IML works? IML is a process step in the injection moulding process. By a robot, a label is picked up and placed in the mould cavity where it sticks due to the electrostatic charging. After the closing of the mould cavity, the product can be moulded whereby the label is fused with the end product.
What is necessary for applying IML?
Depending on the geometry of the product and the desired cycle time, there are various methods with associated electrodes to apply.
In Mould Labelling, also referred to as ‘In Mold Labelling’ or IML, with the help of static electricity is becoming the new standard in injection moulding, thermoforming and blow moulding industry. Instead of conventional methods like decorating by printing directly or placing an adhesive label onto the product, the decoration is achieved with a pre-printed plastic label. The pre-printed label is positioned into the injection mould and kept in place by an electrostatic charge. This way the label will be moulded together with the product shape and comes out as a finished, fully recyclable product.