Ecologically friendly composition containing beneficial additives
First Claim
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1. A composition for use in making a biodegradable and microwavable food container comprising:
- water;
starch, wherein the starch comprises pregelatinized and native starch and wherein the pregelatinized starch is in a range from more than 0% to less than 30% by weight of the total starch in the composition;
fibers, wherein a dispersion of the composition is such that the fibers are substantially separated from one another throughout a starch based matrix; and
a metal or metal oxide, wherein the metal or metal oxide is substantially dispersed throughout the composition such that the metal or metal oxide is partially or substantially enveloped by the starch of the starch based matrix to prevent sparking when microwaved and wherein the metal or metal oxide is in a range from more than 0% to less than 25% by dry weight of the composition wherein the dry weight of the composition is the total weight of the non-water components thereof.
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Abstract
One embodiment is a composition comprising water; starch; natural fibrous materials; one or more additives to improve certain properties such as heat transfer, microbial resistance, scavenging activity or shelf life; a mold release agent; flavoring agents; coloring agents; and/or wax emulsions, proteins, or other natural polymeric compounds to adjust the product properties for particular applications.
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Citations
24 Claims
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1. A composition for use in making a biodegradable and microwavable food container comprising:
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water; starch, wherein the starch comprises pregelatinized and native starch and wherein the pregelatinized starch is in a range from more than 0% to less than 30% by weight of the total starch in the composition; fibers, wherein a dispersion of the composition is such that the fibers are substantially separated from one another throughout a starch based matrix; and a metal or metal oxide, wherein the metal or metal oxide is substantially dispersed throughout the composition such that the metal or metal oxide is partially or substantially enveloped by the starch of the starch based matrix to prevent sparking when microwaved and wherein the metal or metal oxide is in a range from more than 0% to less than 25% by dry weight of the composition wherein the dry weight of the composition is the total weight of the non-water components thereof. - View Dependent Claims (2, 3, 4)
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5. A composition for use in making microwavable food containers comprising:
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water; starch, wherein the starch comprises pregelatinized and native starch and wherein the pregelatinized starch is in a range from more than 0% to less than 30% by weight of the total starch in the composition; an insolubilizing compound, wherein the insolubilizing compound comprises an aqueous solution comprising polyamide-epichlorohydrin compounds; fibers, wherein a dispersion of the composition is such that the fibers are substantially separated from one another throughout a starch based matrix; a wax; a mold release agent; and a metal or metal oxide wherein the metal or metal oxide is substantially dispersed throughout the composition such that the metal or metal oxide is partially or substantially enveloped by the starch of the starch based matrix to prevent sparking when microwaved and wherein the metal or metal oxide is in a range from more than 0% to less than 25% by dry weight of the composition wherein the dry weight of the composition is the total weight of the non-water components thereof. - View Dependent Claims (6)
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7. A composition for use in making biodegradable and microwavable food containers comprising:
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water; starch comprising pregelatinized and native starch wherein the pregelatinized starch is in a range from more than 0% to less than 30% by weight of the total starch in the composition; an insolubilizing compound comprising an aqueous solution comprising polyamide-epichlorohydrin compounds; natural fibers, wherein a dispersion of the composition is such that the fibers are substantially separated from one another throughout a starch based matrix; and a metal or metal oxide wherein the metal or metal oxide is substantially dispersed throughout the composition such that the metal or metal oxide is partially or substantially enveloped by the starch of the starch based matrix to prevent sparking when microwaved and wherein the metal or metal oxide is in a range from more than 0% to less than 25% by dry weight of the composition wherein the dry weight of the composition is the total weight of the non-water components thereof. - View Dependent Claims (8)
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9. A composition for use in making a biodegradable and microwavable food container comprising:
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water; starch, wherein the starch comprises pregelatinized and native starch; fibers; and a heat transfer compound wherein the heat transfer compound is substantially dispersed throughout the composition such that the heat transfer compound is partially or substantially enveloped by the starch of the starch based matrix to prevent sparking when microwaved and wherein the heat transfer compound is in a range from more than 0% to less than 25% by dry weight of the composition wherein the dry weight of the composition is the total weight of the non-water components thereof. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A composition for use in making biodegradable and microwavable food containers comprising:
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water; starch comprising pregelatinized and native starch wherein the pregelatinized starch is in a range from more than 0% to less than 30% by weight of the total starch in the composition; an insolubilizing compound comprising an aqueous solution comprising polyamide-epichlorohydrin compounds; natural fibers, wherein a dispersion of the composition is such that the fibers are substantially separated from one another throughout a starch based matrix; and a heat transfer compound wherein the heat transfer compound is substantially dispersed throughout the composition such that the heat transfer compound is partially or substantially enveloped by the starch of the starch based matrix to prevent sparking when microwaved and wherein the heat transfer compound is in a range from more than 0% to less than 25% by dry weight of the composition wherein the dry weight of the composition is the total weight of the non-water components thereof. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification