Powder coating of veneered particle board surfaces by hot pressing

Published Date
Progress in Organic Coatings
October 2014, Vol.77(10):1547–1553, doi:10.1016/j.porgcoat.2013.09.018
Coatings Science International 2013

Author 

• Monica Badila ^a
• Christoph Jocham ^a
• Wenbiao Zhang ^b
• Thomas Schmidt ^c
• Günter Wuzella ^a
• Uwe Müller ^a
• Andreas Kandelbauer ^a,d,,

• aWOOD Carinthian Competence Centre, Klagenfurterstraße 87-89, A-9300, St. Veit an der Glan, Austria
• bZhejiang Agricultural & Forestry University, School of Engineering, 88, North Circle Rd., Lin‘an, Zhejiang Province, 311300 China
• cTIGER Coatings GmbH & Co. KG, Negrellistraße 36, A-4600 Wels, Austria
• dSchool of Applied Chemistry, Reutlingen University, Alteburgstraße 150, D-72762 Reutlingen, Germany

Available online 16 February 2014. 

Abstract

The powder coating of veneered particle boards by the sequence electrostatic powder application – powder curing via hot pressing is studied in order to create high gloss surfaces. To obtain an appealing aspect, veneer sheets were glued by heat and pressure on top of particle boards and the resulting surfaces were used as carrier substrates for powder coat finishing. Prior to the powder coating, the veneered particle board surfaces were pre-treated by sanding to obtain good uniformity and the boards were stored in a climate chamber at controlled temperature and humidity conditions to adjust an appropriate electrical surface resistance. Characterization of surface texture was done by 3D microscopy. The surface electrical resistance was measured for the six veneers before and after their application on the particle board surface. A transparent powder top-coat was applied electrostatically onto the veneered particle board surface. Curing of the powder was done using a heated press at 130 °C for 8 min and a smooth, glossy coating was obtained on the veneered surfaces. By applying different amounts of powder the coating thickness could be varied and the optimum amount of powder was determined for each veneer type.

Keywords

Powder coating

Veneer

Particle board

Press

Curing

Gloss

---

 Table 1

Table 1.

 Table 4

Table 4.

 Table 2

Table 2.

Fig. 1.

 Table 3

Table 3.

Fig. 2.

Fig. 3.

• ⁎ 
  Corresponding author.
  
  

For further details log on website :
http://www.sciencedirect.com/science/article/pii/S0300944014000435