Laminated cereal bag is fully compostable
In 2005, to further extend its environmental commitment—the company practices natural farming methods and uses organically sourced ingredients—Jordans began working with Alcan Packaging Dublin Ltd. (www.alcan.com) to develop a fully compostable bag for its new Organic Granola and its Organic Muesli. According to David Maxwell, a member of Alcan’s product development and technical service in Dublin, project challenges included
The resulting structure is a two-layer lamination of compostable materials. The top layer, made of NatureFlex™ NE30, is a wood pulp-based film from Innovia Films (www.innoviafilms.com) that is coated on both sides with a wax coating that provides barrier properties. The inside layer is made from Mater-Bi NF1OU from Novamont (www.materbi.com), a material made of “renewable resources of agricultural origin,” according to its supplier.
The bag’s top layer is gravure-printed in seven colors using inks from Flint-Schmidt (www.flint-schmidt.com), while offline solvent lamination is done using a two-component PUR adhesive that provides high laminate bond strength. According to Maxwell, the successful conversion of the film relied on a process of controlling the treatment energy levels. The film web achieves a low coefficient of friction, allowing for smooth bag formation on Rovema (www.rovema.com) equipment, he adds.
The block-bottom bag was introduced into stores last year, and according to Jordans, has met with “positive and encouraging” feedback from retailers and consumers. “The bag improves our company’s green credentials, while offering a sustainable [material] source with a useful end product: compost,” the company says.
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