Sustainable Converting
attention to filling speed when it comes to choosing packaging, followed by high quality product protection such as dust- free packaging and storage ability. Sustainability, at 3.6, is also a highly valued characteristic of packaging. “One reason for this is surely the
increasing pressure by end customers demanding sustainable products and packaging”, GemPSI member Jean-Francois Barberin speculates. “Also, taxes on plastic packaging could be levied when the EU plastics strategy is implemented, so that sustainable alternatives are preferred.”
SUSTAINABLE ARGUMENTS With regards to sustainability, paper sacks have much to offer. The kraft paper used to manufacture paper sacks is made exclusively from renewable resources acquired from sustainably managed forests. Beyond this, the paper sack industry pays close attention to environmentally friendly and energy efficient manufacturing over the complete production cycle from cradle to gate. The CO2 emissions of an average paper sack for cement is only 71g CO2 equivalents (CDE). In comparison: an average form-fill seal polyethylene (FFS PE) sack uses 192g, or 2.5 times more CDE. The natural, long cellulose fibres used in their manufacture not only mean that paper sacks are biodegradable but are also recyclable and very tear- resistant. Paper fibres can be recycled up to eight times - and not only in theory. Many years ago, GemPSI built up
recycling processes and infrastructure so that paper sack recycling could also be put into practice. With the help of the recycling systems founded by paper sack manufacturers, around a half million tons of emptied paper sacks were recycled in
Sustainable building materials packaging A
ccording to statements of GemPSI members, building materials customers pay most
customers,” says Barberin. “With modern filling technology, paper sacks can be filled at a rate of 4,000-6,000 sacks per hour and machine. Other requirements to be fulfilled very much depend on the product. Building materials that easily absorb moisture from the air require special protection against moisture.” The German paper sack industry answers the needs and requests of its customers with continual product developments.
Whether it’s for cement, mortar or plaster, sustainable packagingis playing an increasingly important role in the packaging of building materials. GEM PSI tracks the trend
Germany over the past 25 years. The Fraunhofer Institute UMSICHT calculated in a study, that the recycling of paper sacks saved 0.24t CO2 equivalents (CDE) per ton of paper sacks. Also, the average paper sack weighs about 25 per cent less today than it did 15 years ago. The reason for this is the considerable optimisation of paper strength, which saves materials and costs. “The productivity of packaging is still the most important factor for our
PAPER SACK AS HIGH-TECH PRODUCT So paper sacks, which would seem to be a simple product, have become an ambitious and customer-specifically manufactured high-tech article that perform several other tasks in addition their storage and transport functions. A typical paper sack for building materials is composed of two layers of paper with a barrier layer between them. Different sack structures can increase product protection considerably. The barrier layer can be adjusted to the individual requirements of the product. Beyond this, special coatings can ensure higher moisture protection or longer shelf life. A thermal valve is used to keep sacks absolutely dust free. The valve is tightly sealed during the filling process, either thermally or via ultrasound.
SACK AS MARKETING INSTRUMENT “In the past few years, interest in innovative packing solutions has increased greatly,” Barberin explains. “Customers are always weighing the cost and use of a product, and marketing considerations also play a role in product use.” Paper sacks can be printed in high quality and in very different colour combinations. Helpful elements such as carrier and opening aids give added value to the end customer and also serve as a marketing tool.
papiersack.de
Integrated lid design wins Red Dot award M
etsä Board, European producer of premium fresh fibre paperboards, is
pleased to announce that its paperboard cup design, ‘Lidloc’, has been awarded the coveted ‘Red Dot’ for design excellence and creative achievement. A 24 member jury examined, discussed and evaluated over 8,600 international communication design works before deciding upon the winners of the coveted Red Dot awards, one of the world’s largest design competitions. The Lidloc design is based upon an
extension to a standard cup structure that folds and locks into an integrated lid. The one-piece construction made of paperboard removes the need for a separate plastic lid.
32 December/ January 2019 The cup is easy to fold and assemble with
a secure lid-locking design and offers extra branding power as it can be printed as one piece with the rest of the cup. Lidloc is an example of how Metsä Board develops more environmentally friendly and more efficient packaging and helps to use the potential of lightweight paperboards in an innovative way. Cyril Drouet, Metsä Board’s packaging services director says: “We are delighted to see our patented Lidloc cup getting this recognition as we believe it offers a more sustainable alternative to single use plastic lids.” The ceremony for the Red Dot Awards took place on 26 October.
metsaboard.com
convertermag.com
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