Cover tape

Details Cover tape Cover tape

1998-03-11

2000-03-21

Morris, Terrel

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

B32B 712

Patent

active

060400471

ABSTRACT:
A cover material has a biaxially oriented resin layer, a heat sealant layer in which an electrically conductive fine powder composed mainly of barium sulfate particles surfaces of which are coated with tin oxide doped with antimony is dispersed in a thermoplastic resin, and an intermediate layer. The intermediate layer comprises 30 to 50% by weight of an ethylene-.alpha.-olefin copolymer having a density of from 0.915 to 0.940 g/cm.sup.3, and 70 to 50% by weight of a styrene-butadiene block copolymer composed of 50 to 90% by weight of styrene and 50 to 10% by weight of butadiene. A carrier tape having a plurality of embossed portions is made of a polycarbonate sheet containing from 5 to 30% by weight of electrically conductive carbon fine particles. A taping apparatus is produced by heat-sealing the above cover material to the above carrier tape so as to cover the embossed portions.

REFERENCES:
patent: 4590534 (1986-05-01), Akamatsu et al.
patent: 4963405 (1990-10-01), Yamashita et al.
patent: 5208103 (1993-05-01), Miyamoto et al.
patent: 5346765 (1994-09-01), Maeda et al.
patent: 5441809 (1995-08-01), Akhter
patent: 5599621 (1997-02-01), Akhter
patent: 5846652 (1998-12-01), Yamashita

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