发明授权
- 专利标题： Corrugator roll
- 专利标题（中）： 瓦楞纸卷
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申请号： US903108申请日： 1978-05-05
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公开(公告)号： US4154565A公开(公告)日： 1979-05-15
- 发明人: Glenn F. Hyde , Harvey A. Kasinoff , Gordon L. Morgret , Richard R. Pfunder , Charles E. Thomas
- 申请人： Glenn F. Hyde , Harvey A. Kasinoff , Gordon L. Morgret , Richard R. Pfunder , Charles E. Thomas
- 申请人地址： PA Pittsburgh
- 专利权人： Koppers Company, Inc.
- 当前专利权人： Koppers Company, Inc.
- 当前专利权人地址： PA Pittsburgh
- 主分类号： B21D13/04
- IPC分类号： B21D13/04 ; B31F1/26 ; B31F1/28 ; C21D9/38 ; A01J21/00
摘要：
An improved corrugator roll for use in an apparatus for making corrugated paperboard wherein the flute tip and a portion flank of the roll base metal are selectively hardened to a predetermined depth by an electro magnetic process. The valleys of the flutes and the remainder of the flank are maintained at the same hardness as the base material.
公开/授权文献
- USD298754S Carbon dioxide compressing generator for dry ice manufacture 公开/授权日：1988-11-29
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