Effect of Overlay Paper Properties on the Surface Quality of Laminate Flooring

    Machines. Technologies. Materials., Vol. 16 (2022), Issue 6, pg(s) 199-201

    In this study, the effect of overlay paper properties on the surface quality of laminate flooring was investigated. For this aim, only the upper surface of 22 gr/m² raw overlay papers impregnated with 53% melamine formaldehyde resin in the glue pool was sprinkled by corundum (Al2O3) in two different ratios (23 and 28 gr/m²) from different companies at 140-160 ºC. In the drying ovens, the impregnated overlay papers with a final weight of 135 and 140 gr/m² and a humidity of 7.5% were produced. The panels obtained at the end of these processes were tested according to TS-EN 14323 and related standards, which are surface quality features such as surface abrasion, surface scratch and ash test. According to the test results, it has been observed that under the same pressing conditions, different corundum type and amount as well as laminate floorings covered with overlay papers with different final weights have an effect on the surface quali ty properties. It was observed that although the increase in the amount of corundum did not have a significant effect on surface scratching, it had a significant effect on surface wear values. According to the results of the ash test, it was observed that the amount of corundum increased and its distribution on the overlay paper surface was homogeneous.


    Effect of Using Rock Wool on Mechanical and Physical Properties of Oriented Strandboard (OSB)

    Industry 4.0, Vol. 7 (2022), Issue 3, pg(s) 102-104

    In this study, the effect of using different ratios of rock wool on the mechanical and physical properties of OSB (Oriented strandboard) boards, according to the place of use and properties of OSB. For this purpose, 18 mm x1220 mm x2440 mm (control, A1, A2, A3) at a density of 600 kg/m³ using rock wool in three different (10-20-30%) ratios, in proportion to the weight of the middle layer of the chipboard obtained from 100% maritime pine (Pinus maritima) wood. OSB/2 test boards were produced. OSB/2 test boards obtained as a result of using different proportions of rock wool were tested according to the relevant standards. According to the test results, when the mechanical and physical properties (tensile strength in the vertical direction, bending resistance, modulus of elasticity, swelling properties and free formaldehyde values) are compared with the control board, it has been determined that 10-20% rock wool can be used in the production of OSB/2 boards to be used as insulation board. Accordingly, rock wool reinforced composite OSB boards can be preferred as insulation boards in the wood panel industry.