Developers of an eco-friendly packaging coating made from starch and clay designed to replace plastic films are seeking partners to market the idea.
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Scientists from Sheffield Hallam University (SHU) in England and Karlstad University in Sweden said CaiLar, which is made from starch and clay, has been designed to encourage the use of natural based packaging. The team said the clay-starch-plasticiser combination maximises moisture and oxygen barrier properties while under normal conditions.
Scientists from Sheffield Hallam University (SHU) in England and Karlstad University in Sweden said CaiLar, which is made from starch and clay, has been designed to encourage the use of natural based packaging. The team said the clay-starch-plasticiser combination maximises moisture and oxygen barrier properties while under normal conditions.
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A board substrate without any coating had a water vapour transmission rate (WVTR) of 340g per square metre per day, which was reduced to 260g per square metre a day after adding two individual layers of the starch and plasticiser.
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Stora Enso expands its selection of biodegradable packaging boards
A board substrate without any coating had a water vapour transmission rate (WVTR) of 340g per square metre per day, which was reduced to 260g per square metre a day after adding two individual layers of the starch and plasticiser.
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Stora Enso expands its selection of biodegradable packaging boards
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Stora Enso is meeting the growing demand for biodegradable packaging solutions by expanding its selection of biopolymer-coated packaging boards. Biodegradable coating options are available for a number of the company's board grades for use in cups, plates, trays and folding cartons. The paper cups used at the Finnish Pavillion at the current World Expo in Shanghai are made from biodegradable Cupforma board.
Stora Enso is meeting the growing demand for biodegradable packaging solutions by expanding its selection of biopolymer-coated packaging boards. Biodegradable coating options are available for a number of the company's board grades for use in cups, plates, trays and folding cartons. The paper cups used at the Finnish Pavillion at the current World Expo in Shanghai are made from biodegradable Cupforma board.
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The Stora Enso Cupforma board family offers biodegradable material options for drinking cups for all major end uses, such as cold and hot drinks, ice cream and yoghurt. Cupforma Classic Bio meets the compostability requirements of the EN 13432 and ASTM 6400 standards.
Paperboard trays made from Trayforma Performance Bio can be used for packaging fresh and chilled foods that are not heated in their packages. Vegetables, salads and sandwiches are typical examples. All boards in Stora Enso's biodegradable board offering are approved for direct food contact.
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Stora Enso has developed biopolymer coatings for years. "Our patented biopolymer coating technology has enabled us to develop the barrier and other material properties so that the requirements of various end use applications can be met," says Kiviranta. "Based on our experience from our long-time cooperation with cup producers, converting biopolymer-coated boards is more demanding than usual but doesn't require investments in new machinery."
Stora Enso has developed biopolymer coatings for years. "Our patented biopolymer coating technology has enabled us to develop the barrier and other material properties so that the requirements of various end use applications can be met," says Kiviranta. "Based on our experience from our long-time cooperation with cup producers, converting biopolymer-coated boards is more demanding than usual but doesn't require investments in new machinery."
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Biopolymer coatings provide an oxygen, moisture and grease barrier. Biopolymer-coated paperboard breaks down to humus and CO2 in industrial composting. In recycling schemes, biodegradable products are primarily intended for the collection of materials for industrial composting. Collection schemes depend on local collection conditions. Stora Enso's boards can also be safely collected and recycled separately or together with other paper and board products.
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