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公开(公告)号：US20180245995A1
公开(公告)日：2018-08-30
申请号：US15906079
申请日：2018-02-27
Applicant: Sonoco Development, Inc.
Inventor： Russell P. Grabowski
Abstract: A hollow cylindrical tube having an outer surface coated with one or more inks is provided, each ink encapsulated in capsules that rupture under one or more specific loading conditions to display a visually perceptible color. The tube may be used to determine the load capabilities of the tube, to optimize the tube construction and to determine load magnitudes of windable materials and/or the winding process.
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公开(公告)号：US10416033B2
公开(公告)日：2019-09-17
申请号：US15906079
申请日：2018-02-27
Applicant: Sonoco Development, Inc.
Inventor： Russell P. Grabowski
Abstract: A hollow cylindrical tube having an outer surface coated with one or more inks is provided, each ink encapsulated in capsules that rupture under one or more specific loading conditions to display a visually perceptible color. The tube may be used to determine the load capabilities of the tube, to optimize the tube construction and to determine load magnitudes of windable materials and/or the winding process.
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