PACKAGING MATERIAL WITH A BARRIERCOATING BASED ON STARCH, COATING MATERIAL, PROCESS AND DEVICE FOR THE MANUFACTURING OF SUCH A BARRIERCOATING

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...

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Bibliographische Detailangaben
Hauptverfasser:	INNEREBNER, FEDERICO, MÜLLER, ROLF
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	IMPREGNATING OR COATING OF PAPER PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	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.