| 摘要 |
The present invention provides a non-transparent film composition that has light-shielding properties and can thereby maintain the stability and quality of products, such as formulations, for a long period of time; and formulations using this film composition, and particularly filled capsules. The non-transparent film composition contains a water-soluble metal compound containing at least one metal selected from the group consisting of sodium, potassium, calcium, magnesium, aluminium, manganese, iron, cobalt, nickel, copper, strontium, and barium; and a water-soluble cellulose derivative. The non-transparent film composition is preferably prepared by: spreading an aqueous solution containing a water-soluble cellulose derivative and a water-soluble metal compound containing a monovalent, divalent or trivalent metal into a film- or sheet-like form; and heating the solution at a temperature of 60° C. or higher to obtain the film composition by drying and solidification.
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