Ultrasonic sealing versus heat conductive sealing of polyethylene/polybutene‐1 peel films

Nase, Michael; Bach, Sascha; Zankel, Armin; Majschak, Jens‐Peter; Grellmann, W.

doi:10.1002/app.39171

Cited by 14 publications

(14 citation statements)

References 37 publications

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“…These ranges show a large overlap with the settings applied in previous research on similar flexible films with polyolefin layers. 7,8 Step 2. Experimental design and runs Within these limits of the design space, 15 seal setting combinations were defined according to a three-factor, three-level Box-Behnken experimental design.…”

Section: Resultsmentioning

confidence: 99%

“…Several advantages of ultrasonic sealing over heat conductive sealing have been shown, such as the short sealing times, decreased thermal stress on the packaged product, the capability to seal through powder contamination, a decreased energy consumption, a narrower seal, and no need for thick peel layers. 2,[7][8][9] In ultrasonic sealing, sound waves in the frequency range between 20 and 40 kHz are used to create friction and thus generate heat between two layers of packaging film. The energy introduction in the seal is achieved by means of an ultrasonic horn, oscillating with an amplitude in the range of 10-60 μm, and an anvil.…”

Section: Introductionmentioning

confidence: 99%

“…6 The effect of the sealing parameters on the seal quality was also studied for ultrasonic sealing in the past, although much less extensively than for heat conductive sealing. [7][8][9][10] Bach et al stated that the most important parameters influencing the ultrasonic sealing process are the sealing time, force, and the amplitude of the horn and the authors studied the individual effect of the sealing time and force on the seal strength of commercial polyamide/PE films. 8 Nase et al studied the effect of the seal force on the peel properties of PE/polybutene-1 peel films and concluded that the seal force has a strong impact on those properties.…”

Section: Introductionmentioning

confidence: 99%

“…8 Nase et al studied the effect of the seal force on the peel properties of PE/polybutene-1 peel films and concluded that the seal force has a strong impact on those properties. 7 Stoehr et al performed a parameter study to characterize the effect of amplitude, force, and time on the ultrasonic sealing quality of bio-based packaging films produced from poly lactic acid. 10 Finally, Van Oordt et al studied the effect of ultrasonic sealing time, force, and amplitude on the peel strength and behaviour of PE composite films.…”

Section: Introductionmentioning

confidence: 99%

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Multicriteria evaluation and optimization of the ultrasonic sealing performance based on design of experiments and response surface methodology

et al. 2019

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Proper closure is an essential packaging quality aspect and can, amongst others, be achieved with ultrasonic sealing. The ultrasonic sealing performance depends on the film type, and the seal settings, such as seal time, applied force and ultrasonic amplitude. Because these parameters are less intuitive than heat seal parameters and optimal settings are undefined for many films, this work presents an efficient approach to evaluate the effect of these settings on the ultrasonic sealing performance. An experimental design defines the experiments to perform. A response surface methodology is then used to model the relation between seal settings and sealing performance. Based on these models, the seal settings are optimized. As there are several criteria to express sealing performance, single-criteria and multicriteria optimizations are described.The approach was illustrated for a polyethylene terephthalate/linear low-density polyethylene-C4 film. The seal settings were optimized to obtain high seal strength, limited ultrasonic horn displacement, and low seal energy. The optimum settings were 0.1 seconds (seal time), 4.32 N/mm (force), and 28.75 μm (amplitude). The predicted optimum strength, horn displacement, and energy were 2.32 N/mm, 40 μm, and 11.66 J, respectively. Besides the optimum, the seal window is also of interest. A broad seal window ensures sufficient seal strength for a wide range of settings. For the polyethylene terephthalate/linear low-density polyethylene-C4 film, a strength of ≥90% of the optimum was obtained for 39% of the input combinations within the design space.The presented approach is widely applicable (other films and sealing processes) since it is flexible in the input parameters, design, and responses. KEYWORDSdesign of experiments, multicriteria seal optimization, polyolefin packaging, response surface methodology, ultrasonic sealing

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multicriteria evaluation and optimization of the ultrasonic sealing performance based on design of experiments and response surface methodology

et al. 2019

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“…The weldability of polymers and the high quality of the weld are not only a function of the amount of mechanical energy delivered to the welding zone, but also the properties of the welded materials . Blending PLA with a plasticizer (PEG) affects the mechanical properties of the PLA.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic welding of plasticized PLA films

Stoehr

Baudrit

Haberstroh

et al. 2014

J of Applied Polymer Sci

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Poly(lactic acid) (PLA) is a commercially available biobased material that has become an ideal material in packaging applications because of its low toxicity along with its environmentally friendly characteristics. Unfortunately, PLA is rigid and brittle. These characteristics impede its wide application. The flexibility of PLA can be improved by plasticization. In addition, welding polymer films is essential in the packaging production. Therefore, the weldability by means of ultrasonic welding of the neat and with polyethylene glycol plasticized PLA films was analyzed in this study. Moreover, the study examines the influence of the material composition on the processing window, that is, the range of welding parameters which could be used to weld films efficiently, and on the weld quality. This research showed that all examined films can be welded by ultrasonic welding. Furthermore, it was discovered that the addition of a plasticizer has a strong influence on the processing window and on the weld quality. V C 2014 Wiley Periodicals, Inc. J.Appl. Polym. Sci. 2015, 132, 41351.

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Solvent‐Free Printing of Flexible Organic Thin Film Transistors by Ultrasonic Welding

Sasaki

Sakai

et al. 2016

Adv Elect Materials

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A novel fabrication technique for making plastic electronics has been developed by applying an ultrasonic welding method that is already widely used in cutting, molding, and joining plastic sheets and parts for many industrial products. One major use of ultrasonic welding is the assembly of blood transfusion bags and other medical supplies, because the inert plastic parts can be joined and sealed without any adhesive agent and within a very short processing time. In this study, the same method is applied to make plastic electronics. The successful fabrication of organic TFTs is shown without affecting the gate insulator layer and the self‐assembled monolayer (SAM) of pentafluorobenzenethiol (PFBT). We therefore demonstrate that ultrasonic welding can also be used to fabricate plastic electronics. Using this process, for example, one could add electronic functionality not only on the surface of a blood transfusion bag, but also in or through the welding margin at the fringe of the bag.

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Ultrasonic sealing versus heat conductive sealing of polyethylene/polybutene‐1 peel films

Cited by 14 publications

References 37 publications

Multicriteria evaluation and optimization of the ultrasonic sealing performance based on design of experiments and response surface methodology

Multicriteria evaluation and optimization of the ultrasonic sealing performance based on design of experiments and response surface methodology

Ultrasonic welding of plasticized PLA films

Solvent‐Free Printing of Flexible Organic Thin Film Transistors by Ultrasonic Welding

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