Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...
Patent
1979-12-10
1981-07-14
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Coating or impregnating workpiece before molding or shaping...
53407, 53477, 128261, 128272, 206528, 264232, 264238, 264344, 424 37, 427 3, 427338, A61M 300
Patent
active
042786339
ABSTRACT:
A gelatin capsule is formed with an elongated portion and a bulb portion with a medicinal material therein for supply to a body through inserting the elongated portion in a body orifice. The elongated portion is treated with a hardening agent which withdraws water and/or glycerin from the elongated portion of the capsule so that the elongated portion has sufficient rigidity for insertion within the body orifice. The hardening agent can be a polymer of a glycol, which is preferably polyethylene glycol, an inorganic drying agent such as silica gel or phosphorus pentoxide, an alcohol, or a ketone, such as acetone, for example. When a polymer of a glycol is utilized as the hardening agent, the polymer of a glycol can remain on the elongated portion to function as a lubricant when the elongated portion is inserted in the body orifice. Furthermore, the polymer of a glycol can include an anesthetic for deadening the nerves around the body orifice. To prevent the polymer of a glycol from flowing to the bulb portion to harden it when the polymer of a glycol remains on the elongated portion, the viscosity of the polymer of a glycol is preferably selected so that it will not flow at room temperature although the coating of the polymer of a glycol could be coated with paraffin or a mechanical barrier to prevent this or the bulb portion could be coated with paraffin to prevent the polymer of a glycol from affecting the soft bulb portion or a mechanical barrier could be provided between the elongated and bulb portions.
REFERENCES:
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patent: 3379554 (1968-04-01), Brindamour
patent: 3616101 (1971-10-01), Satchell et al.
"Encyclopedia of Chemical Technology"-Kirk-Othmer-Silica Gell, vol. 12, 1968, pp. 345-347.
"Encyclopedia of Chemical Technology"-Kirk-Othmer-Phosphorus Pentoxide, vol. 15, 2-1969, pp. 311-315.
Stanley Drug Products, Inc.
Thurlow Jeffery R.
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