Method of lubricating compression tools of molding machines
First Claim
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1. A method for the compression molding of tablets, pill cores, cores for hard gelatin capsules, and the like, which comprises:
- before each molding operation spraying unto each molding surface of compression molding tools for molding tablets, pill cores, cores for hard gelatin capsules, or the like a measured amount of lubricant selected from the group consisting of suspensions, solutions, and melts of lubricating agents selected from the group consisting of fatty acids and their salts, metal soaps, fatty acid esters, higher aliphatic alcohols, polyethylene glycols, paraffin, and silicon oil by means of intermittently and briefly spraying nozzle system, the amount of lubricant deposited comprising from about 0.5 to 5% of the material to be compression molded;
introducing into the compression molding tools lubricant-free material to be compression molded; and
compression molding the lubricant-free material.
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Abstract
A method for spraying compression tools, for example, consisting of upper and lower die and matrix, of machines for the manufacture of molded articles, which comprises applying dissolved, molten or suspended lubricants to the tool surfaces, generally before each compression operation, by means of an intermittently and briefly spraying nozzle system.
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Citations
14 Claims
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1. A method for the compression molding of tablets, pill cores, cores for hard gelatin capsules, and the like, which comprises:
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before each molding operation spraying unto each molding surface of compression molding tools for molding tablets, pill cores, cores for hard gelatin capsules, or the like a measured amount of lubricant selected from the group consisting of suspensions, solutions, and melts of lubricating agents selected from the group consisting of fatty acids and their salts, metal soaps, fatty acid esters, higher aliphatic alcohols, polyethylene glycols, paraffin, and silicon oil by means of intermittently and briefly spraying nozzle system, the amount of lubricant deposited comprising from about 0.5 to 5% of the material to be compression molded; introducing into the compression molding tools lubricant-free material to be compression molded; and compression molding the lubricant-free material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification