US 5,376,320 AGranted

Process of producing rottable thin-walled shaped bodies made of starch

AssigneeBiopac Biologische Verpackungssysteme Gesellschaft m.b.H.

InventorsKarl Tiefenbacher, Franz Haas, Johann Haas

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Abstract

To produce rottable thin-walled shaped bodies, such as cups, plates, trays, and the like, which have a high mechanical stability, in a baking process which is similar to that used to produce edible wafers, it is proposed in accordance with the invention to use a substantially fat-free baking composition, which in addition to water contains as a major component a high-starch product, preferably a starch, and as release agents contains fatty acids having chains of medium or long length and/or their salts and/or their acid derivatives. In addition to said compounds or to replace them in part or sometimes entirely it is possible to use polyhydrogensiloxanes. The baking compositions may also contain thickening agents, fillers, humectants, coloring materials, structure-consolidating agents, preservatives and antioxidants. The baked products are finally conditioned to adjust them to a moisture content from 6 to 22% by weight.

Claims53

Dependent claims

A process of producing rottable, thin-walled, shaped baked bodies in a multi-part baking mold which may be opened and closed, which comprises the steps of

(a) opening the baking mold and placing on one of the parts of the opened baking mold a substantially fat-free baking composition containing the following ingredients:
(1) 30% to 63%, by weight, water,
(2) 27% to 69%, by weight, starch base,
(3) 0.04% to 11%, by weight, of at least one release agent selected from the group consisting of medium- and long-chain fatty acids and their salts, derivatives and amides, medium- and long-chain substituted fatty acids and their salts, derivatives and amides, and polymethylhydrogensiloxanes and polymethylhydrogenpolysiloxanes, the siloxanes being present in amounts of 0.05% to 6.5%, by weight,
(4) 0% to 10%, by weight, thickening agent,
(5) 0% to 28%, by weight, high-cellulose raw material,
(6) 0% to 16%, by weight, fibrous material,
(7) 0% to 10%, by weight, non-fibrous filler,
(8) 0% to 4.5%, by weight, humectant,
(9) 0% to 10%, by weight, coloring material,
(10) 0% to 0.1%, by weight, zirconium salt, expressed as ZrO.sub.2, in solution,
(11) 0% to 0.25%, by weight, preservative, and
(12) 0% to 0.5%, by weight, antioxidant;
(b) closing the baking mold after a sufficient amount of the substantially fat-free baking composition has been placed on the one mold part to fill the baking mold and baking the baking composition at a temperature of 145.degree. C. to 230.degree. C. for 25 to 230 seconds;
(c) opening the baking mold after the baking composition has been baked, and removing the baked shaped bodies therefrom;
and
(d) conditioning the baked shaped bodies at a temperature range of 15.degree. C. to 59.degree. C. at a relative humidity range of 25% to 86% for a time of 30 to 210 minutes to produce a conditioned shaped body containing 6% to 22%, by weight, moisture.

14 more elements

Dependencies are inferred from the claim text.