Method for the manufacture of pharmaceutical cellulose capsules

Details Method for the manufacture of pharmaceutical cellulose capsules Method for the manufacture of pharmaceutical cellulose capsules

1995-01-24

1997-12-16

Ortiz, Angela

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to heat the...

264405, 2642978, 264305, 264310, 264327, 264DIG37, 4251746, 425272, 425804, B29C 3306, B29C 4114, B29C 4146

Patent

active

056981554

ABSTRACT:
A method and apparatus for manufacturing pharmaceutical capsules use an aqueous solution of a thermogelling cellulose ether composition and use capsule body pins and capsule cap pins as molds. The method involves heating the pins, dipping the pins into the solution to cause the solution to gelatinize on the surface of the pins, removing the pins and drying the gelatinized solution on the surface of the pins to form capsule bodies and capsule caps. Pins are heated pre-dip and post-dip to facilitate gelating. Counterflow air is applied to provide drying from the inside. Capsule parts are removed by gripping. Capsule parts may have a thick wall and a stiffening ring.

REFERENCES:
patent: 1125619 (1915-01-01), Winchester
patent: 1787777 (1931-01-01), Colton
patent: 1978829 (1934-10-01), Wilkie
patent: 2254262 (1941-09-01), Bratring
patent: 2299039 (1942-10-01), Scherer
patent: 2526683 (1950-10-01), Murphy
patent: 2575789 (1951-11-01), Bogin
patent: 2671245 (1954-03-01), Kath
patent: 2869178 (1959-01-01), Kath
patent: 3399803 (1968-09-01), Oglevee et al.
patent: 3493407 (1970-02-01), Greminger et al.
patent: 3508678 (1970-04-01), Graham et al.
patent: 3617588 (1971-11-01), Langman
patent: 3632700 (1972-01-01), Oglevee
patent: 3664495 (1972-05-01), Graham et al.
patent: 3794453 (1974-02-01), Padilla et al.
patent: 3842242 (1974-10-01), Chisholm
patent: 4001211 (1977-01-01), Sarkar
patent: 4153406 (1979-05-01), Dittmann et al.
patent: 4247006 (1981-01-01), Bodenmann et al.
patent: 4260357 (1981-04-01), Roast et al.
patent: 4627808 (1986-12-01), Hughes
patent: 4705658 (1987-11-01), Lukas
patent: 4758149 (1988-07-01), Sauter
patent: 4917885 (1990-04-01), Chiba et al.
patent: 4993137 (1991-02-01), Muto et al.
patent: 4997359 (1991-03-01), Lebrun
patent: 5032074 (1991-07-01), Muto et al.
patent: 5116551 (1992-05-01), Davidson et al.
Parke, R.F., "Hydroxypropylmethylcellulose Capsules", Oct. 20, 1966.
Ridgway, K., Ed. (1987) "Hard Capsules Development and Technology," The Pharmaceutical Press, London, pp. 56-58.

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