Patent ID: 11964034
Assignee: TOKIWA CORPORATION
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 10:
11. A manufacturing method of a double-structured stick cosmetic comprising an inner core and a solid-form outer layer, the method comprising steps of:
placing a stick-shaped inner mold inside a tubular mold;
filling a gap between the stick-shaped inner mold and the tubular mold with a first oil composition;
solidifying the first oil composition;
removing the stick-shaped inner mold to form the outer layer having a cavity inside;
filling the cavity with a second oil composition to form the inner core; and
taking out the double-structured stick cosmetic comprising the inner core and the outer layer from the tubular mold,
wherein the first composition comprises:
(A) an alkyl-modified silicone having an alkyl group having 16 to 50 carbon atoms and
(B) a wax in a solid-form at 25° C. other than (A), and

wherein the second oil composition comprises:
(B′) a wax in a solid-form at 25° C. other than (A) in a content of 0.1% by mass or more and 15% by mass or less based on a total amount of the second oil composition.