Article with embedded optically-readable identification means an

Details Article with embedded optically-readable identification means an Article with embedded optically-readable identification means an

1988-06-17

1990-01-02

Robinson, Ellis P.

Stock material or miscellaneous articles

Sheet facing and longitudinally noncoextensive with web or...

Sheet smaller in both length and width

428 76, 428195, 428204, 428206, 428207, 428208, 428209, 428458, 235487, 235488, 2354735, 235473, 156 60, 156155, 156298, 1563071, 1563082, 156311, B32B 104

Patent

active

048912549

ABSTRACT:
Optically-readable identification means embedded in an article to be identified. One method of the invention is to apply the identification means to an article and then subsequently cover the article, at least in the area of the identification means, with a protective layer so that the identification means becomes an integral part of the article. In the case of fiberglass articles, the identification means is applied to the article before the final layer of epoxy or polyester is applied. In one preferred embodiment for high temperature applications, there is provided an embeddable bar code strip comprising a bar code which can withstand high temperatures disposesd on a polymeric carrier substrate which is stable at temperatures to at about 500 degrees Fahrenheit. This bar code is preferably iron powder placed on a polyimide substrate by means of xerographic copying. In another preferred embodiment, for nonreflective articles, one surface of the carrier substrate is coated with aluminum by vapor deposition.

REFERENCES:
patent: 4023208 (1977-05-01), Feit et al.
patent: 4263503 (1981-04-01), Bianco
patent: 4680460 (1987-07-01), Dresler
patent: 4745268 (1988-05-01), Presler

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