Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Adhesive outermost layer
Reexamination Certificate
2011-04-26
2011-04-26
Shosho, Callie E (Department: 1787)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Adhesive outermost layer
C428S323000, C428S347000, C428S346000, C428S354000
Reexamination Certificate
active
07931965
ABSTRACT:
A cover tape for packaging electronic components is formed that causes no contamination of sealing bar due to the outflow of the cushion layer, and attains superior adhesion to the carrier tape. Embodiments include a cover tape, for packaging electronic components heat-sealable to a carrier tape for packaging electronic components, comprising: at least a base layer, a cushion layer formed of resin A, a following layer formed along the heat-seal layer of resin B, and a heat-sealing layer laminated in this order; wherein resin A has a Vicat softening temperature Ta measured in accordance with ISO 306 (rate of temperature increase:50° C./hour, load: 10N),and resin B comprises a linear low density polyethylene and has a Vicat softening temperature Tb measured in accordance with ISO 306 (rate of temperature increase:50° C./hour, load: 10N) satisfying the Relational Expression 1 below; and the thickness of the following layer is not smaller than 2 μm and not larger than 15 μm:in-line-formulae description="In-line Formulae" end="lead"?Ta−Tb≧3(° C.). Relational Expression 1in-line-formulae description="In-line Formulae" end="tail"?
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Plastic Material data sheets: Typical properties of ethylene copolymer, Division of Automation Creation, Inc, no month—2004.
Plastic Material Data Sheets: Typical properties of polyethylene, Division of Automation Creation, Inc, no month—2004.
Ditthavong Mori & Steiner, P.C.
Shah Samir
Shosho Callie E
Sumitomo Bakelite Co. Ltd.
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