Process for producing aspheric seamless capsule and...

Details Process for producing aspheric seamless capsule and... Process for producing aspheric seamless capsule and...

2007-06-26

2007-06-26

Gerrity, Stephen F. (Department: 3721)

Package making

Methods

Forming or partial forming a receptacle and subsequent filling

C053S560000, C053S900000, C424S451000, C264S004600, C425S005000

Reexamination Certificate

active

10519087

ABSTRACT:
In manufacturing an aspherical seamless capsule comprises, firstly, a seamless capsule C1having a filler encapsulated with a shell membrane is provided, then it is dried in a dryer12until a predetermined percentage content of solvent in the shell membrane reaches a predetermined value. Subsequently, the seamless capsule is heated by a heater38so that the shell material may get to a semi-sol state. Then, the heated seamless capsule is formed into an aspherical shape using a forming machine such as a compression molding machine. Because the spherical seamless capsule has a shell membrane which is dried to get semi-sol so that it may have a reduced elasticity and a shortened stress relaxation time, the capsule can be formed in a short time and suppressed from restoring to the original spherical shape. The semi-sol shell membrane has almost no change in properties, and so allows easiness in temperature control for treatment. The aspherical capsule after being formed does not or rarely need drying, resulting in wrinkle resistance and little variation in shape brought on the surface of the shell membrane.

REFERENCES:
patent: 90600 (1983-10-01), None
patent: 2088273 (1982-06-01), None
patent: 52-79019 (1977-07-01), None
patent: 60-40055 (1985-03-01), None
patent: A-2000-325431 (2000-11-01), None
patent: WO 92/21311 (1992-12-01), None
patent: WO 01/45635 (2000-12-01), None
patent: WO 01/68032 (2001-09-01), None
Machine generated English language translation of JP 2000-325431.

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