Coating processes – Measuring – testing – or indicating
Reexamination Certificate
1996-01-11
2001-04-17
Beck, Shrive (Department: 1762)
Coating processes
Measuring, testing, or indicating
C427S142000, C264S496000, C264S406000
Reexamination Certificate
active
06217934
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a paint color testing kit and method. More particularly, a test kit that duplicates and eliminates the spray process utilized for both color and strength control of paint products in a quality setting. Also provided is the ability to substantially duplicate the surface in which the paint is to be applied, so that an accurate color comparison can be made between paint applied to a testing member of the kit and the painted surface to be evaluated or repaired.
In the control and evaluation of color for automotive coatings it is common practice to apply paint to a substrate through spray application technique or possible drawdown method. This procedure of spray application can be time consuming and inefficient when the interest of time is at hand.
In the repair of automobile bodies, for example, it is common practice to spray a small amount of paint on the repaired area to determine if it matches the paint on the surrounding undamaged area of the body. This procedure is often repeated many times before a proper color match is created, resulting in a build up of numerous layers of paint on the repaired area. These unnecessary layers of paint can adversely affect the appearance of the repaired area and will often result in the development of cracks in the repaired and painted surface because of excessive layers of paint thereon.
A need has arisen therefore for a simple and effective method of:
1) Comparing the color and strength of a coating to be applied to a given color standard for control purposes.
2) Also a method of application will also allow for comparison of color to the surrounding undamaged area of an automobile without the buildup of excessive paint on the repaired area.
The paint color testing kit of the invention and method of the present invention meet this need. A Sprayless Paint Observation Technique (SPOT) is disclosed as the crux of the invention.
SUMMARY OF THE INVENTION
In accordance with the present invention a kit and method have been developed that together provide Sprayless Paint Observation Technique (SPOT). This method and kit provides a means to duplicate the spray process and provide accurate reproducible color evaluation for paints typically found on automobiles utilizing the OEM paint process. Also provided is the capability to control color and strength in a quality setting via the use of a spectrophotometer.
The method of the present invention provides for the comparison of aesthetic properties of a liquid which comprises application of a liquid to a polymeric coated receiver sheet, curing said liquid to provide a mar-free coating for evaluation of the properties of the coating removing the polymeric coated receiver sheet. Especially advantageous results are obtained in the analysis of paint ink and dye in liquid form. The properties that can be determined include the color, strength, transmission and reflectance of the liquid. The present method finds particular applicability in the analysis of automotive paint.
Such a kit and method has the advantages of reduced emission output, expedited production batches, elimination of spray variation, greatly reduced testing time, reduction of exposure to high VOC levels during a typical spray application, and eliminates the build-up of unnecessary paint on the surface of a repaired automobile.
REFERENCES:
patent: 3849911 (1974-11-01), Longenecker
patent: 4523852 (1985-06-01), Bauer
patent: 4917745 (1990-04-01), Speer
patent: 5217377 (1993-06-01), Little, Jr.
patent: 5217744 (1993-06-01), Little, Jr.
patent: 5371599 (1994-12-01), Falcoff et al.
patent: 5700515 (1997-12-01), Rodrigues
BASF Corporation
Beck Shrive
Kolb Jennifer
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