Punch or die for tabletting
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United States of America Patent
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N/A
Issued Date -
Aug 23, 2007
app pub date -
May 15, 2006
filing date -
May 16, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An object of the Invention is to provide a punch or die for tabletting to be excellent durability and releasability. When a coating layer is provided on a surface, the coating layer is yet securely prevented from detachment. In the punch or die for tabletting, the tablet-forming surface layer 5 contains a base metal and a hardening metal in a fused state which is different from the base metal, and a hardening metal content is incremental from the base metal toward the tablet-forming surface layer 5. The hardening metal contains at least any one of W, C, B, Ti, N, and Cr. Furthermore, in the punch or die for tabletting, the tablet-forming surface layer 5 ranges between 0.1 .mu.m and 5 .mu.m in terms of arithmetical mean roughness Ra of the surface.
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