Composite film and use thereof in the presence of

专利名称：Composite film and use thereof in the

presence of solvents

发明人：Heiner Johannsen,Richard W. Coates申请号：US08/637684申请日：19960429公开号：US05725947A公开日：19980310

摘要：The invention relates to a film composite comprising a thin flexible backingbearing a first layer of adhesive comprising a blend of from 10- 99 wt. % of an acryliclatex and from 1 to 90 wt. % of heat- activatable urethane latex, and a second adhesivelayer applied on top of said first adhesive layer comprising a pressure-sensitive adhesiveexhibiting an initial adhesion as to allow reliable positioning and initial removability of saidfilm composite on a substrate and an adhesion build- up to permanently bond the filmcomposite to the substrate after a prolonged dwell time. The invention further-morerelates to the use of a film composite comprising a thin flexible backing bearing a firstadhesive layer comprising a blend of from 10-99 wt. % of an acrylic latex from 1 to 90 wt.% of a heat-activatable urethane latex, and optionally bearing a second adhesive layerapplied on top of said first adhesive layer, comprising a pressure-sensitive adhesive whichexhibits an initial adhesion as to allow reliable positioning and initial removability of thefilm composite on a substrate and an adhesion build- up to permanently bond the filmcomposite to the substrate after prolonged dwell time, for applying on substratesexposed to organic solvents and, in particular, to fuels for internal combustion engines.

申请人：MINNESOTA MINING AND MANUFACTURING COMPANY

代理人：John H. Hornickel,Gary L. Griswold,Walter N. Kirn

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