Claims
- 1. A base mixture for use in producing a resilient, biodegradable packaging material product, said mixture comprising the following first six ingredients plus added water expressed in % by weight of the first six ingredients:
- (a) vegetable oil: about 0.5% to about 5%;
- (b) polyvinyl alcohol: about 5% to about 25%;
- (c) glycerine: about 0.5% to about 10%;
- (d) proteinaceous grain meal: about 3% to about 10%;
- (e) glycerol monostearate: about 0.1% to about 0.8%;
- (f) non-modified starch: about 45% to about 90%; and
- (g) added water: about 0% to about 30%.
- 2. A base mixture for use in producing a resilient, biodegradable packaging material product, said mixture comprising the following first six ingredients plus added water expressed in % by weight of the first six ingredients:
- (a) vegetable oil: about 0.5% to about 3%;
- (b) polyvinyl alcohol: about 6% to about 20%;
- (c) glycerine: about 0.5% to about 3%;
- (d) proteinaceous grain meal: about 3% to about 7%;
- (e) glycerol monostearate: about 0.1% to about 0.5%;
- (t) non-modified starch: about 55% to about 88%; and
- (g) added water: about 5% to about 15%.
- 3. The mixture of claim 2 wherein said vegetable oil content is about 0.9%, said polyvinyl alcohol content is about 18.7%, said glycerine content is about 0.9%, said grain meal content is about 4.7%, said glycerol monostearate content is about 0.2%, said starch content is about 74.6%, and said water is added at an amount of about 6% to about 9%.
- 4. A biodegradable packaging material product comprising an expanded composition of about 0.5% to about 5% vegetable oil, about 5% to about 25% polyvinyl alcohol, about 0.5% to about 10% glycerine, about 3% to about 10% proteinaceous grain meal, about 0.1% to about 0.8% glycerol monostearate and about 45% to about 70% non-derivatized starch, said product having a moisture content of from about 7.0% to about 12.0% by weight of said composition.
- 5. The product of claim 4 having a creep of about 10% to about 18%, a set of about 6% to about 16% and a bulk density of from about 0.3 to about 2.0 lb/ft.sup.3.
- 6. The product of claim 5 wherein the creep is about 15%, the set is about 8% and the bulk density is from about 0.4 to about 0.65 lb/ft.sup.3.
- 7. The product of claim 6 wherein the moisture content is from about 10.0% to about 12.0%.
- 8. A base mixture for use in producing a resilient, biodegradable packaging material product, said mixture comprising the following first six ingredients plus added water expressed in % by weight of the first six ingredients:
- (a) vegetable oil: about 0.5% to about 5%;
- (b) polyvinyl alcohol: about 5% to about 25%;
- (c) glycerine: about 0.5% to about 10%;
- (d) proteinaceous grain meal: about 3% to about 10%;
- (e) glycerol monostearate: about 0.1% to about 0.8%;
- (f) non-modified starch with an about 19% to about 44% by weight amylose content: about 45% to about 90%; and
- (g) added water: about 0% to about 30%.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of U.S. patent application Ser. No. 08/082,273 filed Jun. 24, 1993, entitled "Compositions for Resilient Biodegradable Packaging Material Products", now abandoned.
US Referenced Citations (7)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
82273 |
Jun 1993 |
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