Patent Number: 7,707,803

Title: Biodegradable bags for packing foods available in high speed production

Abstract: A method for producing a biodegradable bag and for packing a food, such as a snack food, which is required to have an oxygen barrier property and a water vapor barrier property. The biodegradable bag can be produced at a high speed by a bag making and packaging machine, which can be degraded by naturally occurring microorganisms in soil or water finally to a non-hazardous degradation product, which can be biorecycled, and which is not accumulated in nature. The biodegradable bag for packing a food comprises a laminated film obtainable by laminating in the following order: a sealant layer comprising a biodegradable polymer; a barrier layer having an oxygen barrier property and a water vapor barrier property; and a barrier layer-supporting substrate layer comprising a biodegradable polymer, the laminated film being heat-sealed in order for the sealant layer to be inside.

Inventors: Mori; Hirotsugu (Kyoto, JP), Iwasaki; Yoshio (Shiga, JP), Kobayashi; Yukio (Tokyo, JP)

Assignee: Ishida Co., Ltd.

International Classification: B65B 9/00 (20060101); B65B 3/02 (20060101)

Expiration Date: 5/04/12018