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In-mould labels | packaging

of an injection moulded lid and alumini- um foil on products such as pates which are heat treated after fi lling. According to ArtaPlast managing director Helge Steg, more than 10 companies are using the 1-Seal system today in Europe, mostly in the Baltic region. It recently, through its US partner Spartech Packaging Technologies, also secured a contract for the 1-Seal lid technol- ogy with The Better Bean Company. Spartech director of marketing for packaging,

Jeffrey Best says the 1-Seal lid provides improved deco- rative quality while providing a secure seal and offering the consumer the benefi t of recloseability. “A standard IML injection moulding process is used for the lid. The difference is instead of full coverage we leave the area that lines up with the tray lid exposed,” he says. The IML label fi lm is backed with a special sealing layer, allowing the lid to be heat sealed in place onto the container lip using conventional hot plate sealing equipment. Best says the 1-Seal system provides a seal capable of withstanding pasteurisa- tion, yet offers easy removal by the consumer. It is also a mono-material solution, simplifying recycling, while the use of IML also means decorative potential is much improved.

Best says Spartech, which is working closely with US-based IML label supplier Inland Labels, is targeting two key areas with the 1-Seal technology in the US: lids for thermoformed trays and barrier applications. ArtaPlast already has a

barrier solution available but is yet to secure a com- mercial application in Europe.

One of the leading players in full coverage IML packaging is Germany’s Weidenham- mer Packaging Group. Its most recent project for German mozzarella cheese supplier Goldsteig is a 225g oval pack with a soft contoured base feature more typical of a sleeve-labelled thermofor- med package (the pack is shown in the composite main image on p35).

According to Weidenhammer, achieving the design for the Bambini Mozzarella with a full-coverage injection moulded IML label is a fi rst.

“A realistic three dimensional image

of mozzarella on the cup was extremely important to our client,” says Weidenhammer sales director Andreas Rothschink. The new packaging, which was introduced to the German market in August, also meets the company’s technical requirements. The PP pack is sealed with a composite gas-tight fi lm which prevents drying out of the salt brine packaged cheese.

Leading IML label printer Verstraete has extended its decorative options to include printed metallic and transparent effects. The company claims the use of metallic-effect printing inks on a standard IML label provides a more cost-effective solution for applications where the use of a metallised label cannot be justifi ed. The technique is being used by Unilever in some European markets on its Flora and Becel margarine brands.

The Belgian label manufacturer has also introduced a high transparency PP label stock that is said to make it possible to achieve a ‘no label’ appearance on parts of

the package. The combination of its SuperClear fi lm with a partial-printing technology is claimed to overcome the loss of transparency experienced with previous primer and UV lacquer combinations.

Click on the links for more information:

January/February 2013 | INJECTION WORLD 39

Above: Unilever is the fi rst major brand

owner to use Verstraete’s

metallic print capability on IML labels for its Flora and Becel marga- rine products

Centre left: Sepro demonstrated production of this 1.2 litre IML pail on a Sumitomo

Demag El-Exis machine at Fakuma using IML handling from partner Machines Pagès

Left: Belgian IML printer Verstraete uses a special high transparency PP fi lm to create its SuperClear IML labels

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