| 摘要 |
Disclosed is a method for producing gelatin-free soft capsule envelopes based on polyvinyl alcohol-polyether graft polymers as enveloping polymers. Said method is characterized in that an aqueous solution containing at least 45 percent by weight of a polymer component which comprises a polyvinyl alcohol-polyether graft polymer or a mixture of polyvinyl alcohol-polyether graft polymers and polyvinyl alcohol is heated, the percentage being in relation to the total weight of the solution, the solution is extruded at a minimum temperature of 70 °C, and the obtained film is solidified by cooling. |
