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White colour and surface quality of appliances - Finish clinic and analysis of varnishing process; dishwashers, washing machines and tumble dryers

Isabelle Andersson
Göteborg : Chalmers tekniska högskola, 2011. 114 s. Diploma work - Department of Materials and Manufacturing Technology, Chalmers University of Technology; 2011 59, 2011.
[Examensarbete på avancerad nivå]

The customers of today have high desires and requirements on products and they select which products to purchase based on a large awareness of the market. Therefore, the key to all business success is to fully understand what gives the customers the largest possible usefulness and satisfaction out of the products. The next step is then to create a manufacturing process that is in statistical control, has small variations and that to a great extent meets the specified desired output. This master’s thesis focuses in different ways on the perception of different hues of the colour white and on surface deviations on varnished surfaces. To understand which hues of white that are perceived as attractive and which surface defects that are noticed and how they are perceived, an extensive customer inquiry has been performed. To better understand the market situation a smaller survey of the competitor’s colours has also been made. A challenge with the current varnishing process at Asko Appliances AB has been to develop more detailed knowledge about how the output and perceived quality can be controlled by small changes of input parameters. Therefore, an extensive statistical analysis based on data collected from differently designed experiments has been performed. The possibility of using measurements of surface waviness to judge surfaces with orange peel structure has also been investigated. The customer inquiry elucidated that white hues that contain small amounts of blue or only negligible amounts of yellow most often are found as attractive and that some defects are considered to be more critical than others. Another important conclusion is that the results of such an experiment are highly depending on the context and environment where it is performed. Several interesting observations were made during the analysis of the varnishing process and it was found that the process is somewhat more complex than expected. However, the effects of some controlling factors such as temperature, time and position on the hanger during curing were found to affect the hue more than others.

Nyckelord: colour, hues of white, spectrophotometer, perception, varnishing process, statistical variation, surface defect, quality, surface waviness



Publikationen registrerades 2012-01-15. Den ändrades senast 2013-04-04

CPL ID: 152930

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