Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Adhesive outermost layer
Patent
1989-02-22
1990-08-21
Lesmes, George F.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Adhesive outermost layer
428343, 428354, 428355, B32B 310, B32B 2730, B32B 2714
Patent
active
049505378
ABSTRACT:
The invention relates to a foamlike pressure-sensitive adhesive tape comprising a flexible carrier supporting one or more pressure-sensitive adhesive layers, at least one layer of the pressure-sensitive adhesive having pigment-coated microbubbles dispersed therein having an average diameter from 5 to 200 micrometers, wherein the coat comprises pigment particle aggregates having an average pigment aggregate size being from about 0.5 microns to about 5 microns.
The invention further relates to pigment-coated microbubbles, and to a method for making coated microbubbles involving rolling the pigment and the microbubbles in a cylindrical container with two or more mixing rods having lengths at least about equal to the interior diameter of the container, and a combined surface area at least about 5% of the interior surface area of the container.
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Vesley George F.
Zimmerman Patrick G.
Davis J.
Kirn Walter N.
Lesmes George F.
Minnesota Mining and Manufacturing Company
Neaveill Darla P.
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