The Impact of Post-Manufacture Treatments on the Surface Characteristics Important for Finishing of OSB and Particleboard

Antonio Copak,Josip Miklečić,Nikola Španić,Vlatka Jirouš-Rajković

doi:10.3390/f12080975

Abstract

Oriented strand board (OSB) is a commonly used structural wood-based panel for walls and roof siding, but recently the industry has become interested in OSB as a substrate for indoor and outdoor furniture. Particleboard is mainly used in furniture productions and has become popular as a construction material due to its numerous usage possibilities and inexpensive cost. Moisture is one of the most important factors affecting wood-based panel performance and the post-treatment conditions affected their affinity to water. When OSB and particleboard are used as substrates for coatings, their surface characteristics play an important role in determining the quality of the final product. Furthermore, roughness can significantly affect the interfacial phenomena such as adsorption, wetting, and adhesion which may have an impact on the coating performance. In this research particleboard and OSB panels were sanded, re-pressed and IR heated and the influence of surface treatments on hardness, roughness, wetting, water, and water vapour absorption was studied. Results showed that sanding improved the wetting of particleboard and OSB with water. Moreover, studied surface treatments increased water absorption and water penetration depth of OSB panels, and re-pressing had a positive effect on reducing the water vapour absorption of particleboard and OSB panels.

Highlights

Oriented strand board (OSB) is a structural reconstituted panel that consists of wood strands glued with resin
The results showed that Brinell hardness was increased after re-pressing of the particleboard and OSB samples, but only the increase in particleboard surface hardness is statistically significant (Table 3)
PB: raw particleboard, PB-P: re-pressed particleboard, OSB: raw oriented strand board, and OSB-P: re-pressed oriented strand board. * Difference statistically significant in comparison with raw particleboard or OSB panel according to the Dunnett test at α = 0.05 significance level

Summary

Introduction

Oriented strand board (OSB) is a structural reconstituted panel that consists of wood strands glued with resin. OSB has gained significant growth in the structural wood-based panel market [1]. OSB is commonly used structural wood-based panel for walls and roof siding, but recently the industry has become interested in OSB as a substrate for indoor and outdoor furniture [2]. Furniture made of boards are technologically easy to mass-produce and susceptible to the use of typical fastener joining methods [3]. It can be manufactured from either hardwoods or softwood, or from a mix of both.

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Conclusion