Appeal No. 96-1879
Application 08/006,194
The subject matter on appeal is directed to a test carrier
and to a method of manufacturing a test carrier. Claims 20 and
38 are exemplary of the invention and read as follows:
20. Test carrier for analysis of a liquid sample, said test
carrier comprising
a first absorbent layer having a surface,
a second absorbent layer having a surface facing said
surface of said first absorbent layer, and
an array of dots of hot melt adhesive connecting said
surfaces of said first and second layers, said array comprising
at least 25 dots per cm , wherein said dots of hot melt adhesive2
have a dimension perpendicular to said surfaces which keeps said
surfaces spaced apart by a gap of 0.05 to 0.2 mm, said dots and
said gap being dimensioned such that a liquid sample can pass
from said surface of said first absorbent layer to said surface
of said second absorbent layer.
38. Method of manufacturing a test carrier for analysis
of a liquid sample, said method comprising
providing a first absorbent layer having a surface
and a second absorbent layer having a surface,
applying hot melt adhesive to the surface of said
first layer by a pressurized gas spray to form a filamentary
array of adhesive, and
applying said surface of said second layer against
said array so that said surfaces are spaced apart by a gap of
capillary dimensions.
2
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Last modified: November 3, 2007