Coating & Laminating
n the past, blown film producers struggled with wave phenomena and surfaces that were not perfectly plane. In particular, stiffer films containing HDPE or PP, are effected by these problems that also frequently occur in the production of barrier films. Reifenhäuser Blown Film offers a solution: The Evolution Ultra Flat haul-off. This system enables films of improved flatness, and better printability and lamination capability, to be produced. The secret of the new optimised film flattening
Blown film suited to lamination I
system is mainly its position within the process. In the past, flattening systems were arranged just in front of the winder; however, Evo Ultra Flat is installed upstream between the hauloff nip roll assembly and turner bar system. In other words, at the point where optimum processing conditions for flattening the web have been created. At this stage of the process, the film still has a
temperature of over 50°C and is thus not fully crystallised. Stretching the film while it it still flexible is not only much easier, but also more energy efficient. Further benefits include low investment costs, high functionality and flexibility: Four heating-cooling rolls and two nip rolls designed for independent speed and temperature control allow producers to obtain the desired flattening effect. In this way, it is possible to obtain results with different raw
materials and film thicknesses. In addition, sagging of the web can be reduced by a targeted control of the rolls. Flatness of lamination and barrier films can be
improved by up to 40 per cent and sagging of the web can be reduced by up to 90 per cent. In
subsequent conversion processes the films can be more easily laminated, printed and converted into packaging products. About 70 per cent of all relevant new
Reifenhäuser lines are equipped with Evo Ultra Flat.
www.reifenhauser.com
Introduction of new laminating adhesive to meet market demand
a perfect example of how customers are becoming more demanding of the materials they use, particularly where registered film laminates are concerned and we have responded to stay ahead of the game.” One of the key benefits of the new adhesive
with the introduction of a new adhesive system. Having been successfully trialled through a rigorous testing program, the new adhesive is a welcome addition to the range used by API in Europe as it offers improved peel strength, reducing the risk of delamination during
A 14 November 2017
brand enhancement specialist, API, has made a breakthrough in the performance of its metallised polyester film laminates
subsequent manufacturing processes. As one of the leading companies in the field of paper and board lamination, API continues to strive to meet market demands and this introduction enables the company to offer a robust product for the most technically challenging situations. “This new development is another in the long line of innovations API has brought to market,” says Richard Burhouse, commercial director at API. “It is
system is its ability to deliver extremely high bond strengths without being excessively pressure sensitive in nature, meaning that the resulting laminate offers a wider operating window to down- stream processes, such as die cutting, where there is a risk of the cutting action initiating delamination on the edges. It is also highly water resistant, offers improved temperature stability and is compatible with API’s registration control system that allows pre-imaged laminated board to be printed in register during subsequent conversion steps. “The new adhesive is complementary to the existing range of approved systems available, and it allows our technical and quality colleagues to work in partnership with customers to specify the most appropriate product for the job at a time when packaging is becoming ever more sophisticated. This development is another great example of
how we constantly seek new ways to offer our customers an enhanced service and look to be a solutions provider in our field of expertise,” concludes Burhouse.
www.apigroup.com
www.convertermag.co.uk
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