US 2010/0163449 A1 · DISPOSABLE BIODEGRADABLE CONTAINERS AND MANUFACTURING METHOD THEREOF

Abstract

A disposable biodegradable container made of a mixture of biodegradable materials to make a disposable container and a method of manufacturing the same are disclosed. The biodegradable material is produced by mixing chaff, saw dust, straw, pulp or a combination thereof with starch, palm fiber, and melamin resin to produce a mixture; pouring the mixture into a mold; and pressurizing the mixture at high temperature and a high pressure at three times. Accordingly, a disposable container having an excellent hardness, elasticity and compact texture can be manufactured by using the biodegradable materials. Also, it is possible to further enhance physical properties of a disposable container by mixing the mixture with esters, polysorbates, stearyl sodium lactates.

Claims8

Dependent claims

A method for manufacturing a disposable biodegradable container, comprising:

mixing 52 to 68% by weight of a plant raw powder obtained by grinding a raw material selected from chaff, saw dust, straw, pulp or a combination thereof to a size of 70 to 120 meshes, 8 to 12% by weight of starch, 12 to 18% by weight of palm fiber, 8 to 12% by weight of melamin resin and 4 to 6% by weight of water, to produce a mixture;
pouring the mixture into a mold having a shape of a container;
primarily pressurizing the mixture poured in the mold at a pressure of 30 to 40 kgf/cm2 and a temperature of 150 to 155° C. for 4 to 5 seconds;
secondarily pressurizing the mixture at a pressure of 280 to 320 kgf/cm2 for 4 to 5 seconds;
tertiarily pressurizing the mixture at a pressure of 30 to 40 kgf/cm2 for 10 to 15 seconds while maintaining a volumetric decreasing rate within a range of 0.75 to 0.85.

2 more elements

Dependencies are inferred from the claim text.

Disposable biodegradable containers and manufacturing method thereof

Life of this patent

Disposable biodegradable containers and manufacturing method thereof

Life of this patent

Abstract

Claims8