Taper Tension Profile in Roll-to-Roll Rewinder: Improving Adhesive Force of Pressure-Sensitive Adhesive Film

Lee, Jongsu; Kim, Seong-Yong; Lee, Chang Woo

doi:10.1007/s40684-019-00100-w

Cited by 9 publications

(3 citation statements)

References 25 publications

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“…Lee et al [6] and Kim et al [7] have proposed a theoretical and experimental approach to obtain desired coating conditions to fabricate large-area electrolyte layer using the roll-to-roll slot-die coating. They also have offered a winding tension profile that can be used to manufacture a pressure-sensitive adhesive film while maintaining its adhesive force [8]. Seo et al [9] have presented a continuous roll imprinting process as a large-area and high-throughput method for producing arbitrary surface patterns on a metal plate.…”

Section: Introductionmentioning

confidence: 99%

Residual Interfacial Deformation in Flexible Copper Clad Laminate Occurring During Roll-to-Roll Composite Film Manufacturing

Lee

Kim

et al. 2021

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Flexible copper clad laminate has been used to fabricate flexible electronics such as bio-inspired tactile sensor, microfluidicsbased sensor, and flexible printed circuits board. Herein, the effects of thermal property difference between the component layers on the residual interfacial deformation in a flexible copper clad laminate occurring during roll-to-roll composite film manufacturing were analyzed. The thermal behaviors of polyimide film and copper meshes in the laminate were examined, and it was found that differences of the coefficient of thermal expansion and elastic modulus between the two components could cause the residual deformation in the laminate. The three factors affecting the residual strain due to the thermal characteristic difference, i.e., temperature and pressure of the lamination roll and web tension, were selected in the controllable operating conditions in a roll-to-roll lamination process. Mathematical models to estimate the elastic and thermal residual strains according to the factors were developed and experimentally verified. Finally, the effects of the three factors on the residual strain in the laminate were determined using the developed model. In this study, we demonstrate that, in the lamination process, the thermal strain of the laminate component materials after thermal cycling generates a significant residual deformation, which causes defects in the flexible copper clad laminate. The developed model can be used to accurately estimate the residual elastic and thermal residual strains occurring during the roll-to-roll manufacturing according to the process conditions.

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Section: Introductionmentioning

confidence: 99%

Residual Interfacial Deformation in Flexible Copper Clad Laminate Occurring During Roll-to-Roll Composite Film Manufacturing

Lee

Kim

et al. 2021

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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“…The roll-to-roll manufacturing (R2R) process is ecofriendly and low-cost, and has the advantage of mass production, which makes it attractive in manufacturing flexible electronic devices such as thin film transistors and solid oxide fuel cells (SOFCs) [1][2][3][4][5]. Recently, a brittle electrolyte, which is a separator used in SOFCs to transmit oxygen ions, was coated using this R2R process [6].…”

Section: Introductionmentioning

confidence: 99%

Web Unevenness Due to Thermal Deformation in the Roll-to-Roll Manufacturing Process

Lee

Kim

et al. 2020

Applied Sciences

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In roll-to-roll (R2R) processing, web uniformity is a crucial factor that can guarantee high coating quality. To understand web defects due to thermal deformation, we analyzed the effect of web unevenness on the coating quality of an yttria-stabilized zirconia (YSZ) layer, a brittle electrolyte of solid oxide fuel cells (SOFCs). We used finite-element analysis to study thermal and mechanical deformations at different drying temperature levels. A YSZ layer was also coated using R2R slot-die coating to observe the effect of web unevenness on coating quality. Web unevenness was generated by thermal deformation due to conduction and convection heat from the dryer. Because of varying web unevenness with time, the YSZ layer developed cracks. At higher drying temperatures, more coating defects with larger widths were generated. Results indicated that web unevenness at the coating section led to coating defects that could damage the SOFCs and decrease yield in the R2R process. Coating defects generated by web unevenness caused by convection and conduction heat should be considered in the high-volume production of brittle electrolytes using the R2R process.

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“…Roll-to-Roll manufacturing process (named R2R process) is eco-friendly, low-cost, and has the advantage of mass-production, which makes it attractive in manufacturing flexible electronic devices such as thin film transistors and solid oxide fuel cells (SOFCs) [1][2][3][4][5]. Recently, a brittle electrolyte, which is a separator used in SOFCs to transmit oxygen ions, has been coated using this R2R process [6].…”

Section: Introductionmentioning

confidence: 99%

Web Unevenness due to Thermal Deformation in Roll–to–Roll Manufacturing Process

Jo¹,

Lee²,

Kim³

et al. 2020

Preprint

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In roll-to-roll (R2R) processing, uniformity of the web is a crucial factor that can guarantee high coating quality. To understand web defects due to thermal deformation, we analyzed the effects of web unevenness on the coating quality of an yttria-stabilized zirconia (YSZ) layer, a brittle electrolyte of solid oxide fuel cells (SOFCs). We used finite element analysis to analyze the thermal and mechanical deformations at different drying temperatures. A YSZ layer was also coated using R2R slot-die coating to observe effects of web unevenness on the coating quality. It was seen that web unevenness was generated by thermal deformation due the conduction and convection heat from the dryer. Owing to varying web unevenness with time, the YSZ layer developed cracks. At higher drying temperatures, more coating defects having larger widths were generated. Results indicated that web unevenness at the coating section led to coating defects, which could damage the SOFC and decrease its yield in the R2R process. From this study, we suggest that coating defects, generated by the web unevenness owing to the convection and conduction heat, should be considered for the high-volume production of brittle electrolytes using the R2R process.

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Taper Tension Profile in Roll-to-Roll Rewinder: Improving Adhesive Force of Pressure-Sensitive Adhesive Film

Cited by 9 publications

References 25 publications

Residual Interfacial Deformation in Flexible Copper Clad Laminate Occurring During Roll-to-Roll Composite Film Manufacturing

Residual Interfacial Deformation in Flexible Copper Clad Laminate Occurring During Roll-to-Roll Composite Film Manufacturing

Web Unevenness Due to Thermal Deformation in the Roll-to-Roll Manufacturing Process

Web Unevenness due to Thermal Deformation in Roll–to–Roll Manufacturing Process

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