초록 ▼

Capsules and other shaped products formed from a moldable starch composition in an injection molding device is disclosed in the present invention. The composition comprising starch having a molecular mass range of 10,000 to 20,000,000 Dalton, and a water content range from 5 to 30% by weight. The st

Capsules and other shaped products formed from a moldable starch composition in an injection molding device is disclosed in the present invention. The composition comprising starch having a molecular mass range of 10,000 to 20,000,000 Dalton, and a water content range from 5 to 30% by weight. The starch contains about 0 to 100% of amylose, and about 100 to 0% of amylo-pectin.

대표청구항 ▼

A process for forming starch into an article using an injection molding technique which process comprises: (A) maintaining a starch/water composition at a water content between 5-30% by weight of the composition under controlled conditions of temperature and pressure, (b) heating said starch/water c

A process for forming starch into an article using an injection molding technique which process comprises: (A) maintaining a starch/water composition at a water content between 5-30% by weight of the composition under controlled conditions of temperature and pressure, (b) heating said starch/water composition at elevated pressure above its glass transition temperature and melting point while maintaining said water content, to form a melt, (c) further heating and plasticizing said molten starch/water composition to dissolve the starch in the water to form an essentially molecularly dispersed solution of the melt, (d) injecting the starch/water melt into a mold cavity while maintaining said predetermined water content, (e) cooling the composition in the mold to form a molded product at a temperature below the glass transition temperature of said composition and, (f) ejecting the molded product from said mold.