Effects of perforation design on corrugated fiberboard panel compression

Kueh, Celia; Martinez-Hermosilla, Gonzalo A.; Jamsari, Mohamad Aiman; Dahm, Karl; Bronlund, John E.

doi:10.1016/j.fpsl.2021.100755

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…In order to reduce the amount of formaldehyde released, UF resin (usually ≤ 1.0) is synthesized by a low F/U molar ratio method in industrial production, and formaldehyde is still released continuously when used in wood products [11,12]. Furthermore, Park et al reported that the formation of cross-linked structures of UF resins with low-molar ratios was suppressed due to the hydrogen bonding interaction between linear polymers [13,14]. It is worth mentioning that this is also the primary reason for the poor property of UF resin, especially for the high formaldehyde emission and poor water resistance.…”

Section: Introductionmentioning

confidence: 99%

Ureido Hyperbranched Polymer Modified Urea-Formaldehyde Resin as High-Performance Particleboard Adhesive

Yang

Wang

et al. 2023

Materials

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The performance of urea-formaldehyde (UF) resin and its formaldehyde emission is a natural contradiction. High molar ratio UF resin performance is very good, but its formaldehyde release is high; low molar ratio UF resin formaldehyde release is reduced, but the resin itself performance becomes very bad. In order to solve this traditional problem, an excellent strategy of UF resin modified by hyperbranched polyurea is proposed. In this work, hyperbranched polyurea (UPA6N) is first synthesized by a simple method without any solvent. UPA6N is then added into industrial UF resin in different proportions as additives to manufacture particleboard and test its related properties. UF resin with a low molar ratio has a crystalline lamellar structure, and UF-UPA6N resin has an amorphous structure and rough surface. The results show that internal bonding strength increased by 58.5%, modulus of rupture increased by 24.4%, 24 h thickness swelling rate (%) decreased by 54.4%, and formaldehyde emission decreased by 34.6% compared with the unmodified UF particleboard. This may be ascribed to the polycondensation between UF and UPA6N, while UF-UPA6N resin forms more dense three-dimensional network structures. Finally, the application of UF-UPA6N resin adhesives to bond particleboard significantly improves the adhesive strength and water resistance and reduces formaldehyde emission, suggesting that the adhesive can be used as a green and eco-friendly adhesive resource for the wood industry.

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Section: Introductionmentioning

confidence: 99%

Ureido Hyperbranched Polymer Modified Urea-Formaldehyde Resin as High-Performance Particleboard Adhesive

Yang

Wang

et al. 2023

Materials

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“…Recently, Ref. [17] developed a new design that included flaps to have a single panel that is more representative of an entire box. The test jig as designed by [16] was also used by other authors, to measure changes in the thickness of the panel by using DIC set-ups on both sides of the panel [18] and to investigate global and local buckling [1,19].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of the In-Plane Compression of Corrugated Paperboard Panels

Cillie

Coetzee

2022

MCA

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Finite element analysis (FEA) has been proven as a useful design tool to model corrugated paperboard boxes, and is capable of accurately predicting load capacity. The in-plane deformation, however, is usually significantly underpredicted. To investigate this discrepancy, a panel compression test jig, that implemented simply supported boundary conditions, was built to test individual panels. The panels were then modelled using non-linear FEA with a linear material model. The results show that the in-plane deformation was still underpredicted, but a general improvement was seen. Three discrepancies were identified. The first was that the panels showed an initial region of low stiffness that was not present in the FEA results. This was attributed to imperfections in the panels and jig. Secondly, the experimental results reported a lower stiffness than the FEA. Applying an initial imperfection in the shape of the first buckling mode shape was found to reduce the FEA stiffness. Thirdly, the panels showed a decrease in stiffness near failure, which was not seen in the FEA. A bi-linear material model was investigated and holds the potential to improve the results. Box compression tests were performed on a Regular Slotted Container (RSC) with the same dimensions as the tested panel. The box displaced 13.1 mm compared to 3.5 mm for the panel. There was an initial region of low stiffness, which accounted for 7 mm of displacement compared to 0.5 mm for the panels. Thus, box complexities such as horizontal creases should be included in finite element (FE) models to accurately predict the in-plane deformation, while a bi-linear (or any other non-linear) material model may be useful for panel compression.

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Effects of perforation design on corrugated fiberboard panel compression

Cited by 2 publications

References 9 publications

Ureido Hyperbranched Polymer Modified Urea-Formaldehyde Resin as High-Performance Particleboard Adhesive

Ureido Hyperbranched Polymer Modified Urea-Formaldehyde Resin as High-Performance Particleboard Adhesive

Experimental and Numerical Investigation of the In-Plane Compression of Corrugated Paperboard Panels

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