Starch-Based Polymers in Extrusion Coating |
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| Authors: | Jurkka Kuusipalo |
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| Institution: | (1) Institute of Paper Converting, Tampere University of Technology, P.O. Box 541, 33101 Tampere, Finland |
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| Abstract: | The starch-based polymers exhibited shear thinning and elastic nature in rheological characterizations. Thin coatings with narrow neck-in could be produced at fairly high extrusion coating line speeds. Adhesion between the starch-based polymers and paperboard was typically weak. Water vapor barrier of starches was very poor. Soft starch grades had a good pinhole resistance and a good heat sealing performance. Brittle nature of starch caused cracking as the coated paperboards were creased. |
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| Keywords: | Biodegradable starch extrusion coating adhesion water vapor barrier |
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