Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Adhesive outermost layer
Patent
1997-10-23
2000-02-22
Copenheaver, Blaine
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Adhesive outermost layer
428 422, 428 423, 428345, 428347, 428349, 428354, 428352, 428353, 428355R, 428922, 206713, 206714, 206717, B32B 712
Patent
active
060278021
ABSTRACT:
A cover tape adapted to seal individual components in respective recesses of a carrier tape or a two dimensional carrier tray, including a randomly embossed layer, an adhesive layer covered over one side of the randomly embossed layer, and a non-adhesive layer adhered to the adhesive layer to prevent the components from adhering to the adhesive layer, the randomly embossed layer including an adhesion portion adapted for fastening to the carrier tape through the adhesive layer, a torn strip portion adapted to enhance the cohesive strength of the randomly embossed layer through the non-adhesive layer, and a stress concentration zone disposed between the contact border line of the adhesion portion and the contact border line of the non-adhesive layer, the torn strip portion being peeled off from the adhesion portion along the stress concentration zone before the removal of the encased components from the carrier tape, the applied tearing force to peel off the torn strip portion from the adhesion portion along the stress concentration zone being smaller than the adhesion force existing between the adhesion portion of the randomly embossed layer and the carrier tape through the adhesive layer, and the adhesion force existing between the torn strip portion and the non-adhesive layer through the adhesive layer.
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Copenheaver Blaine
Four Piliars Enterprise Co., Ltd.
Singh Arti R.
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