`Root cause analysis and Rework
`
`May 8, 2017
`JB Dai
`
`Confidential Document Property of MILWAUKEE TOOL Brookfield, Wisconsin 53005
`
`Milwaukee Electric Tool Corporation – Exhibit 2009 - Page 1
`Apex Tool Group, LLC v. Milwaukee Electric Tool Corporation
`PGR2020-00056 U.S. Patent No. 10,422,617
`
`
`
`Wide tape standout issue tracking list
`
` 2016/10/25 : EB1 standout test data for 78 and 55 degree curvature tapes,
`55 degree max standout is 13.1ft and 78 is 12.3ft.Consider high scrape
`rate for 55degree, team confirmed to use 78 degree tape to move forward.
`
` 2016/11/16: EB2 QA was measured 28+25pcs sample, the standout test
`data max is about 11.98~13.45ft.
`
` 2016/12/27: QB QA was measured 25pcs sample, the standout test data
`max is 12.08ft to 12.96ft
`
` 2017/1/22-23: We found standout issue in MP, looking back entire
`process, painting and lacquering process has transfer from In-house to
`outsource, we looking root cause analysis to have a comparison with in-
`house thru samples study, observation is width changes significantly at
`painting process
`
`Confidential Document Property of MILWAUKEE TOOL Brookfield, Wisconsin 53005
`
`Milwaukee Electric Tool Corporation – Exhibit 2009 - Page 2
`Apex Tool Group, LLC v. Milwaukee Electric Tool Corporation
`PGR2020-00056 U.S. Patent No. 10,422,617
`
`
`
`Wide Tape Stand out issue Summary
`Root cause analysis and Rework
`
` Wide Tape blade with kink and Wave issue as the deep curvature at sample
`build stage:
`
` During the EB and QB, we have arrange a lot of improvement actions to
`resolve above matter, but still have high defect rate and low stand out
`performance:
`
`1. 55 degree tape: 50% failed, stand out with 13ft
`2. 78 degree tape: 25% failed, stand out with 12ft
`
` To avoid schedule delay US team selection 78 degree tape for production,
`but the stand out failed increase in mass production stage:
`
`1. Stand out EB, QB failed rate: 1~2%
`
`2. Stand out mass production: 20~25%
`
`Confidential Document Property of MILWAUKEE TOOL Brookfield, Wisconsin 53005
`
`Milwaukee Electric Tool Corporation – Exhibit 2009 - Page 3
`Apex Tool Group, LLC v. Milwaukee Electric Tool Corporation
`PGR2020-00056 U.S. Patent No. 10,422,617
`
`
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