Highly flexible starch-based films
This invention relates to starch compositions useful in forming flexible films. More particularly, it relates to film-forming compositions containing starch in combination with certain plasticizers. Film-forming compositions are disclosed that can comprise, on a dry solids basis, 25 to 75 percent by...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | This invention relates to starch compositions useful in forming flexible films. More particularly, it relates to film-forming compositions containing starch in combination with certain plasticizers.
Film-forming compositions are disclosed that can comprise, on a dry solids basis, 25 to 75 percent by weight of certain starch derivatives and 25 to 75% primary external plasticizer. The starch derivatives can be chemically modified starches that range in molecular weight from 100,000 to 2,000,000. The high levels of plasticizer in the films give excellent film flexibility and integrity. The films are also resistant to penetration by water, oil and/or grease. |
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