PACKAGING MATERIAL HAVING A BARRIER COATING BASED ON STARCH, AND COATING MASS, METHOD, AND DEVICE FOR PRODUCING SUCH A BARRIER COATING
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United States of America Patent
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Aug 4, 2016
app pub date -
Sep 9, 2014
filing date -
Sep 10, 2013
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Abstract
A packaging material includes a starch-based barrier coating. After deducting an optional filler component, the barrier coating has 30 to 90% by weight of starch, wherein at least >20% of the starch has an average molecular weight of at least 500,000 g/mol, and >20% by weight of the starch are present in the barrier coating in the form of gelatinized starch particles. A content of 0-70% by weight of plasticizer in the barrier coating and a surface weight in the range of 3 to 80 g/m2, make it possible to produce a mechanically stable barrier coating, which effectively prevents the diffusion of nonpolar hydrocarbons and hydrocarbon derivatives, for example on the inside of cardboard packaging, and thus protects the packaged food against contaminations. The packaging material can be produced easily and cost-effectively at high process speeds and can be recycled without restrictions and meets possible food regulations.
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