Effect of applying finishing products and sanding on the surface of marupa wood

Paula, Marcella Hermida de; Mesquita, Robert Rossi Silva de; Costa, Mírian de Almeida; Gonçalez, Joaquim Carlos; Ananías, Rubén A.; Janin, G.

doi:10.4067/s0718-221x2020005000105

Cited by 8 publications

(6 citation statements)

References 18 publications

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“…2, dust extraction accounted for 75% of the average energy consumed in the various furniture manufacturing processes, with the abrasive sanding and wood coating sections registering higher energy consumption than the other operations. In fact, the energy demand for wood coating is significantly higher not only because of the higher total dust and particulate concentration, but also due to the need to ensure a higher pressure in the finishing-room to keep the air-borne dust particles away from this section (Gomez et al 2014;de Paula et al 2020).…”

Section: Part I: Efficiency Of Dust Exhausting Systemmentioning

confidence: 99%

Wood coating dust emission in the Malaysian furniture industry: A case study

Ratnasingam

Arshad²,

Khoo³

et al. 2020

BioRes

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The objectives of this study were to evaluate the current dust extraction efficiency used in the Malaysian furniture industry and also the effectiveness of using engineered nanoparticle (ENP)-added coatings to reduce dust emission in the wood finishing operation. This study was in response to the enforcement of the Clean Air Regulation (2014), which requires significant improvements in the air quality and the work environment in the wood-based industry in Malaysia. A series of sanding experiments with different abrasive grit sizes and different coating types were conducted to determine the dust emission levels. The results suggested that higher capture velocity of 30 m/s was necessary to effectively capture the wood coating dust emitted. Further, ENP-added wood coatings did not differ markedly from conventional coatings with regard to dust emission characteristics. The study also revealed that total dust concentration had an inverse relationship, while the amount of finer dust particles was linearly related to the coating film hardness. Therefore, to comply with the Clean Air Regulation, the Malaysian furniture industry needs to significantly improve its dust extraction system.

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Section: Part I: Efficiency Of Dust Exhausting Systemmentioning

confidence: 99%

Wood coating dust emission in the Malaysian furniture industry: A case study

Ratnasingam

Arshad²,

Khoo³

et al. 2020

BioRes

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“…Sanding is the most common method for wood surface machining before varnishing, which ensures sufficient smoothness before application of varnish materials [1,7,18]. Previous studies [13,14,19,20] have shown that higher surface roughness contributes to lowering the gloss of the coatings.…”

Section: Introductionmentioning

confidence: 99%

Gloss of Varnished MDF Panels Veneered with Sanded and Thermally Compressed Veneer

et al. 2022

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The objective of this study was to investigate the gloss of different types of commercially manufactured varnish systems, including water-based (WB), polyurethane (PUR) and UV-cured (UV), applied on veneered MDF panels with sanded and thermally densified alder and birch wood veneers. The varnishes were applied at various numbers of layers on veneered panels. The gloss was measured at three angles of incident light: 20°, 60° and 85°. Statistical analysis showed that the type of varnish, the number of layers, the pre-treatment process, the wood species and direction of wood fibers significantly affect gloss of the coatings of veneered MDF panels. The type of varnish had a dominant effect on gloss. The highest gloss values were measured for the UV-varnished surface, and the lowest for WB- and PUR-varnished surfaces. Gloss was enhanced with an increase in the number of layers. Birch veneer provided higher gloss values compared to alder veneer. The gloss values measured along the wood fibers were higher than those measured across the fibers. No significant differences were found between the coatings created on sanded and thermally densified veneers for the average gloss values measured along the fibers at angles 60° and 85°. This study could have practical applications for producing value-added furniture elements using low-value wood species pre-treated by thermal compression.

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“…Marupá (Simarouba amara) is a pioneer species that belongs to the Simaroubaceae family and is naturally distributed throughout the Amazon, and the central-west and southwest of Brazil. The wood of this species is light or beigeyellow to cream, and it is used in the furniture industry and in the manufacture of toys, linings and boxes (PAULA et al, 2020). Waste from economic activities that Studies in Engineering and Exact Sciences, Curitiba, v.3, n.3, p. 455-471, jul./sep., 2022 involve both these species is already known to have potential for mushroom cultivation, which could help to reducing the amount of waste in landfills and could generate value-added products (AGUIAR et al, 2021;SALES-CAMPOS et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Cellulase and Xylanase production by Ganoderma lucidum in solid-state fermentation using amazonian lignocellulosic wastes

Júnior¹,

Gouvêa²,

Vasconcelos³

et al. 2022

SEES

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Ganoderma lucidum is a basidiomycete whose production is of great interest due to its medicinal properties, and analyzing the potential of Amazonian lignocellulosic residues in the cultivation of G. lucidum is a way to enable the use of this material in mushroom cultivation and the production of biomolecules, including enzymes of commercial interest. The objective of this study was to evaluate the activity of cellulases and xylanases produced by G. lucidum when cultivated in açaí seed (Euterpe sp.) residues and marupá (Simarouba amara) sawdust under supplemented and non-supplemented conditions. Solid-state cultivation was carried out in 250 mL flasks containing 50 g of lignocellulosic residues, plus 2% of CaCO3, under supplemented (18% of rice, wheat and corn bran) and non-supplemented conditions. The flasks were incubated in a BOD incubator at 25 ºC. Enzyme extraction was performed from the fungus growth substrate over 30 days of cultivation, with collections every two days. The enzymatic extracts had their endoglucanase (CMCase), total cellulase (FPase) and xylanase activities determined. The highest enzymatic activity of CMCase and xylanase were 5.97 U/g and 1.90 U/g, respectively, on the 26th day of cultivation in the supplemented marupá sawdust substrate. While the maximum FPase content was 0.24 U/g, which was observed in the 8th day for the supplemented açaí substrate. Thus, the tested residues proved to be promising for the mycelial development of G. lucidum, with the supplementation with corn, rice and wheat bran being favorable to the production of enzymes with biotechnological interest.

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Effect of applying finishing products and sanding on the surface of marupa wood

Cited by 8 publications

References 18 publications

Wood coating dust emission in the Malaysian furniture industry: A case study

Wood coating dust emission in the Malaysian furniture industry: A case study

Gloss of Varnished MDF Panels Veneered with Sanded and Thermally Compressed Veneer

Cellulase and Xylanase production by Ganoderma lucidum in solid-state fermentation using amazonian lignocellulosic wastes

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