The use and application of ultrasonic vibrations in the 3D deformation of paper and cardboard

Löwe, Albrecht; Hofmann, A.; Hauptmann, Marek

doi:10.1016/j.jmatprotec.2016.09.006

Cited by 6 publications

(4 citation statements)

References 11 publications

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“…An extension of mere pressing was introduced by Löwe et al (2017a). They superimposed an ultrasonic oscillation on the deep drawing process and thus reduce forming forces, improve stiffness and compress the wrinkles (smooth surface) (Löwe et al 2017b). Higher temperatures occur in the specimens, making the ingredients become softer.…”

Section: Increased Shape Accuracy By Adapted Process Parametersmentioning

confidence: 99%

Forming behavior of paperboard in single point incremental forming

Stein

Franke

Elling

et al. 2019

BioRes

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An increased demand for sustainable materials has led to intensive research in the field of three-dimensional paperboard forming. To date, this work has focused on forming processes with shape-giving tools. However, individual shapes are often required, especially for large-format products. Incremental forming can be used in metal processing for small batches. In this article, the technology of incremental forming is transferred to paperboard. The results showed that elevated moisture content and a superimposed counter pressure significantly increased the forming limits. In addition, the use of polymer layers increased the shape accuracy. An extended understanding of the underlying mechanisms was achieved by analyzing the forming behavior. In uniaxial and biaxial characterization tests the influence of the moisture content on the forming behavior was investigated with conditions relevant for incremental forming. It was found that the bulge test is suitable to determine the most suitable moisture content regarding the forming limits and the spring back behavior in incremental forming. In addition, it was observed that the bearable elongations during the incremental forming of paperboard are significantly higher than in the established characterization tests. The reason for this is a compression of the fiber network during forming.

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Section: Increased Shape Accuracy By Adapted Process Parametersmentioning

confidence: 99%

Forming behavior of paperboard in single point incremental forming

Stein

Franke

Elling

et al. 2019

BioRes

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“…The use of ultrasonic-supported tools in paper converting processes has led to technological improvement, which also affects the compression process of paperboard. Recent studies about the use of ultrasonic vibrations in paper processing have shown the positive effects on increasing surface smoothness while maintaining material volume (Wanske 2010) and also on rapid material heating and compression during deep drawing of paper (Löwe et al 2017). Wanske (2010) and Löwe et al (2017) reported that the material is heated up in the tool gap as a function of the ultrasonic parameters, such as amplitude A (µm), ultrasonic time (tUS, s) , and static contact pressure (pstat, MPa).…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies about the use of ultrasonic vibrations in paper processing have shown the positive effects on increasing surface smoothness while maintaining material volume (Wanske 2010) and also on rapid material heating and compression during deep drawing of paper (Löwe et al 2017). Wanske (2010) and Löwe et al (2017) reported that the material is heated up in the tool gap as a function of the ultrasonic parameters, such as amplitude A (µm), ultrasonic time (tUS, s) , and static contact pressure (pstat, MPa). Löwe et al (2017) attributed this to the compressive cyclic stresses in materials as a result of the ultrasonic vibrations.…”

Section: Introductionmentioning

confidence: 99%

“…Wanske (2010) and Löwe et al (2017) reported that the material is heated up in the tool gap as a function of the ultrasonic parameters, such as amplitude A (µm), ultrasonic time (tUS, s) , and static contact pressure (pstat, MPa). Löwe et al (2017) attributed this to the compressive cyclic stresses in materials as a result of the ultrasonic vibrations. Simultaneously, these oscillating compressive stresses in the z-direction in the tool gap result in a large increase in material compression.…”

Section: Introductionmentioning

confidence: 99%

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Ultrasonic induced material compression during the gap-controlled reshaping of dry paper webs by embossing or deep drawing

Hofmann

Hauptmann

2020

BioRes

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The use of ultrasonic tools in paper forming results in highly dynamic mechanical alternating stress, which causes a changed material load. This work aimed to determine the influence of the ultrasonic process parameters of amplitude, ultrasonic time, and static contact pressure and to characterize the material compression during the ultrasonic-assisted forming of paperboard. To achieve this, a method was developed to determine the static, dynamic, and irreversible material compression during the gap-controlled forming of paper. The results showed that the ultrasonic amplitude, the gap pressure, and their second-order interactions had an important influence on the irreversible material compression. With the new method, the irreversible material compression could be increased up to 480% compared to the equivalent static load case.

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Design, construction, and demonstration of a novel die system for deep drawing applications with utilization of ultrasonic vibrations

Olguner,

Bozdana

2024

J Braz. Soc. Mech. Sci. Eng.

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The use and application of ultrasonic vibrations in the 3D deformation of paper and cardboard

Cited by 6 publications

References 11 publications

Forming behavior of paperboard in single point incremental forming

Forming behavior of paperboard in single point incremental forming

Ultrasonic induced material compression during the gap-controlled reshaping of dry paper webs by embossing or deep drawing

Design, construction, and demonstration of a novel die system for deep drawing applications with utilization of ultrasonic vibrations

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