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Forests
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The Role of Wood Gluing and Finishing Technologies in a...
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The Role of Wood Gluing and Finishing Technologies in a Sustainable World

A special issue of Forests (ISSN 1999-4907). This special issue belongs to the section "Wood Science and Forest Products".

Deadline for manuscript submissions: closed (20 May 2022) | Viewed by 4824

Special Issue Editors

Dr. Tomasz Krystofiak

E-Mail Website
Guest Editor
Department of Wood Science and Thermal Techniques, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznan, Poland
Interests: wood technology; adhesives and lacquer products; wood-based materials; technology; wood gluing; wood finishing
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Pavlo Bekhta

E-Mail Website
Guest Editor
Department of Wood-Based Composites, Cellulose and Paper, Ukrainian National Forestry University, 79057 Lviv, Ukraine
Interests: wood science and technology; wood–polymer composites; lignocellulosic based composites; wood modification; wood bonding
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Wood is a sustainable source of material for many applications in different branches of industry. In the manufacturing of many wood-based materials, one of the main steps concerns the gluing process. In addition, to improve the aesthetic properties and to protect wood products from external factors, the finishing process is performed. However, the adhesives and lacquer products used are not always environmentally friendly and, on the contrary, are harmful to both humans and the environment. The growing threat of environmental contaminants requires the development of a new environmentally friendly adhesive and lacquer products system as well as the development of eco-friendly wood-based materials technologies.

The production of environmentally friendly adhesives and lacquers, efficient application techniques, and energy-saving curing and hardening systems, as well as waste minimization and rational waste management systems, fit into the trends of sustainable development.

Modified water-based and hot-melt adhesives are being introduced to the industry. Apart from waterborne, UV-curing, oil/wax, powder, or HS systems used in wet finishing, various cladding materials in the form of foils, laminates, and edges are introduced for the production of wood products. In order to achieve proper adhesion of adhesives and lacquer products to wood, activation or surface modification of lignocellulosic materials is carried out. Topics for this Special Issue include the use of energy-saving and waste-free technologies in regard to sustainable development technologies.

This Special Issue will contribute to the forum for exchanging novel research ideas and empirical practices, which represent and connect a variety of developments in sustainable wood-based materials, ecological adhesives, and lacquer systems, as well as opportunities for using them in the woodworking industry. Emphasis in this Special Issue is also placed on the updating and expanding of knowledge concerning the mechanisms of wood-bonding and finishing.

Dr. Tomasz Krystofiak
Prof. Dr. Pavlo Bekhta
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Forests is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sustainable development
  • ecological adhesive
  • ecological lacquer product
  • gluing
  • finishing
  • wood surface activation
  • wood modification
  • ecological wood-based materials
  • exotic wood species
  • energy saving technology
  • veneering, lamination, and edge-banding technology
  • waste-free technology
  • volatile organic compounds emission

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Published Papers (2 papers)

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Research

29 pages, 15210 KiB  
Article
Carnivorous Plant Algorithm and BP to Predict Optimum Bonding Strength of Heat-Treated Woods
by Yue Wang, Wei Wang and Yao Chen
Forests 2023, 14(1), 51; https://doi.org/10.3390/f14010051 - 27 Dec 2022
Cited by 8 | Viewed by 1716
Abstract
In this study, the CPA algorithm was used to optimize a BP neural network model to predict the bond strength and surface roughness of heat-treated wood. The neural network model was trained and optimized using MATLAB software. The results of the BP neural [...] Read more.
In this study, the CPA algorithm was used to optimize a BP neural network model to predict the bond strength and surface roughness of heat-treated wood. The neural network model was trained and optimized using MATLAB software. The results of the BP neural network, random forest algorithm, and optimized CPA-BP model were compared. The results show that the CPA-optimized BP neural network model has a better R2 compared to the conventional BP neural network model. After using the CPA-optimized BP neural network model, the R2 value increased by 8.1%, the MAPE value decreased by 3.74%, and the MAE value decreased by 33.91% in the prediction of the surface bond strength. The R2 values increased by 3.02% and 20.47%, respectively, in predicting the mean and maximum values of surface roughness. The results indicate that the model is reliable in predicting wood bond strength and wood surface roughness. Using this model to predict wood bond strength and surface roughness can also reduce the required experimental cost. Full article
(This article belongs to the Special Issue The Role of Wood Gluing and Finishing Technologies in a Sustainable World)
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17 pages, 2579 KiB  
Article
Surface Roughness of Varnished Wood Pre-Treated Using Sanding and Thermal Compression
by Pavlo Bekhta, Barbara Lis, Tomasz Krystofiak and Nataliya Bekhta
Forests 2022, 13(5), 777; https://doi.org/10.3390/f13050777 - 17 May 2022
Cited by 8 | Viewed by 2101
Abstract
Surface roughness is an important factor during the processes of wood gluing and finishing. This study proposed a new approach for the preparation of wood veneer surfaces before varnishing through the use of thermal compression instead of sanding. The quality of the pre-treated [...] Read more.
Surface roughness is an important factor during the processes of wood gluing and finishing. This study proposed a new approach for the preparation of wood veneer surfaces before varnishing through the use of thermal compression instead of sanding. The quality of the pre-treated surface was examined using surface roughness measurements. In the experiment, a wood veneer of black alder and birch, before varnishing, was subjected to sanding with a sandpaper of 180 grit size, and thermal compression at temperatures of 180 and 210 °C. Three different types of commercially manufactured varnishes (water-based (WB), polyurethane (PUR) and UV-cured (UV)) were applied to the prepared veneer surfaces with various numbers of varnish layers. Seven roughness parameters such as Ra, Rz, Rq, Rp, Rv, Rsk, and Rku were determined for the sanded and thermally densified unvarnished and varnished surfaces. The profile surface was recorded with a portable surface roughness tester along and across the wood fibers. It was found that there was no difference between the surface roughnesses of the surfaces that had been sanded and the surface roughnesses of those that had been thermally densified at a temperature of 210 °C. The research suggests that thermal compression at a temperature of 210 °C is enough to obtain smoother surfaces with a UV varnish system, and this process can be recommended as a replacement for sanding before varnishing as the most labor-intensive and expensive operations in woodworking industry. Applying two layers of varnish along with intermediate sanding was also sufficient to obtain a satisfactory finish. Full article
(This article belongs to the Special Issue The Role of Wood Gluing and Finishing Technologies in a Sustainable World)
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