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Firwood, a UK paint manufacturer measures gloss as percentages of light reflected from an emitted source back into an apparatus from specified angles, ranging between 60° and 20° depending on the reflectivity. With very low gloss levels (such as matte finishes), a 60° angle is too great to measure
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In traditional household interiors, walls are usually painted in flat or eggshell gloss, wooden trim (including doors and window sash) in high gloss, and ceilings almost invariably in flat. Similarly, exterior trim is usually painted with a gloss paint, while the body of the house is painted in a
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PVC affects both physical and optical properties of a paint. Matte paints have less binder, which makes them more susceptible to mechanical damages (however, they are less visible than on glossy surfaces). More binder provides a smoother and more solid surface. However, at a certain PVC, called
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As a gloss finish will reveal surface imperfections such as sanding marks, surfaces must generally be prepared more thoroughly for gloss finishes. Gloss-finish paints are generally more resistant to damage than flat paint, more resistant to staining, and easier to clean. Flat paint may become
272:(CPVC), the paint is already saturated with binder and the surface becomes solid and glossy, without protruding particles; adding more binder (lowering PVC) will not affect the sheen. CPVC generally depends on the binder-pigment system used, and generally falls in the 35–65% range.
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glossier through burnishing or staining with grease; glossy paint may lose its gloss and look scratched if abraded. Unlike gloss paint, flat paint can generally be touched up locally without repainting the entire surface.
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Scattering of light on finishes with 75% (matte), 50% (satin) and ~35% (glossy) pigment-volume concentration. Still lower PVCs (below critical) do not affect sheen, but only permeability.
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Between those extremes, there are a number of intermediate gloss levels. Their common names, from the most dull to the most shiny, include
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Matte paint: Its history and technology, analysis, properties, and treatment, with special emphasis on ethnographic objects
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Gloss level can be characterized by the angular distribution of light scattered from a surface, measured with a
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The sheen or gloss level of a paint is principally determined by the ratio of resinous, adhesive
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in a range of angles. The gloss level of paint can also affect its apparent colour.
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The returned light into the apparatus allows the gloss to be classified as follows:
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PCI Magazine article: What is the Level of
Confidence in Measuring Gloss?
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light reflectance accurately, so a lower angle of 20° is usually used.
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Gloss paint is commonplace in the automotive industry for car bodies.
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Eric F. Hansen; Sue
Walston; Mitchell Hearns Bishop, eds. (1994).
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69:(mirror-like) direction, while on flat paints most of the light
346:"A Guide to Measuring Levels of Gloss in Paint | Firwood"
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Graphic
Standards Field Guide to Residential Construction
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NPL: Good practice guide for the measurement of Gloss
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446:Koleske, Paint and Coating Testing Manual, p. 615,
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119:Semi-gloss: 41–69%
116:Full gloss: 70–90%
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305:References
281:glossmeter
136:Technology
98:high gloss
94:semi-gloss
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45:) from a
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
