Patent ID: 8408222

Claim:
In a baffle for affecting the flow of a composition during application of the composition to a substrate having a maximum cross-sectional substrate dimension and an edge, the improvement comprising: an annular open-bottom base with upper and lower surfaces, said base including a continuous interior edge wall that intersects the upper and lower surfaces to define a base opening extending continuously between and through the upper surface and the lower surface so that the baffle is open at the lower surface, said base opening presenting an upright opening axis, with the opening having a cross-sectional dimension that varies along at least part of the axis, said edge wall being configured to direct the flow of the composition to the substrate edge, said edge wall including— a curved sidewall, with the opening having a cross-sectional sidewall dimension along the curved sidewall, said sidewall dimension varying axially, with at least one axial position presenting a sidewall dimension that is configured to be greater than the substrate dimension, and a lip coupled with said curved sidewall to be positioned below and adjacent to the sidewall, said lip projecting radially inwardly to define an innermost end, with the opening having a cross-sectional lip dimension at the innermost end that is configured to be less than the substrate dimension, such that the lip is dimensioned to underlie the substrate edge yet define the opening to be otherwise coextensive with the substrate, wherein the baffle is open below the substrate except for the lip when the substrate is placed within the baffle, said baffle comprising a synthetic resin composition.