Effect of pressing conditions on some surface properties of HDF laminate parquets

Abstract

In this study, the effects of lamination conditions on some commercialhigh density fiberboard(HDF) panels surface quality characteristics, surface strength, impact resistance test(large diameter ball test), curing degree, scratch resistance, abrasion resistance are investigated. For this purpose, HDF panels are produced from mixture wood fibers(50% black pine and 50% beech wood) as 8.3 mm thickness. After panels sanded to 7.3 mm thickness, laminated at different pressures and times. Ithas been found thathigh pressure and short-term press time conditionshave significant effect on surface strength, impact resistance, and abrasion resistance values. The best surface quality measurements are obtained from A1 group, pressure 340 kg/m² and 13 s pressing time(average of surface strength value of this group is 1.83 N/mm2, impact resistance value is 25.25 N and abrasion resistance value is 3650 revolution), but the lowest value is B3 groups, 320 kg/m² pressure and pressing time of 18 s(average of surface strength of this group is 1.58 N/mm2, impact resistance value is 20 N and abrasion resistance value is 3200 revolutions). Besides production factors of HDF panels and laminating material properties, press operating conditionshave been found to be decisive factors in laminate parquet pressing process for high surface quality.