Method of applying marking to metal sheet for scrap sorting purposes
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United States of America Patent
Stats
-
Jul 2, 2002
Issued Date -
N/A
app pub date -
Mar 27, 2001
filing date -
Nov 15, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Application of surface marking to metal stock, such as aluminum sheet, prior to or during scrap-generating manufacturing operations, to provide a detectable mark on pieces of manufacturing scrap derived from the marked sheet and commingled with scrap of other aluminum alloy sheet, so that the scrap can be sorted and the marked alloy scrap pieces separated from scrap of other alloy sheet to which the marking was not applied. Different markings, providing detectably different marks, may be respectively applied to sheet of different compositions if scrap pieces of more than two different compositions or compositional families are to be sorted and separated from each other.
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