Ultrasonic Welding of Polymers

Vendan, S. Arungalai; Natesh, M.; Garg, Akhil; Gao, Liang

doi:10.1007/978-981-13-0626-6_3

Cited by 8 publications

(9 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the ultrasonic welding of thermoplastics, heat generation is one of the most important parameters which is generated at the interface resulted from the viscoelasticity phenomenon [33,53]. A protrusion on the polymer surface is required in order to get a good bond as ultrasonic energy is concentrated at the interface.…”

Section: Thermoplastic Polymers For Ultrasonic Weldingmentioning

confidence: 99%

“…Energy directors help to increase the quality of the weld and make the welding process faster and more efficient [67,76,77]. The behavior of polymers was investigated by Lionetto In the ultrasonic welding of thermoplastics, heat generation is one of the most important parameters which is generated at the interface resulted from the viscoelasticity phenomenon [33,53]. A protrusion on the polymer surface is required in order to get a good bond as ultrasonic energy is concentrated at the interface.…”

Section: Thermoplastic Polymers For Ultrasonic Weldingmentioning

confidence: 99%

“…Plasticizers which are added to polymers to impart flexibility can interfere with the ability of the resin to transmit vibration. Impact modifiers, such as rubber, also reduce the weldability of material by lowering the ability of resin to transmit ultrasonic vibrations [53,80,81]. Fillers/extenders constitute a category of additives which enhance the ability of some resins to transmit ultrasonic energy by imparting higher rigidity.…”

Section: Thermoplastic Polymers For Ultrasonic Weldingmentioning

confidence: 99%

See 2 more Smart Citations

Advances in Ultrasonic Welding of Thermoplastic Composites: A Review

et al. 2020

View full text Add to dashboard Cite

The ultrasonic welding (UW) technique is an ultra-fast joining process, and it is used to join thermoplastic composite structures, and provides an excellent bonding strength. It is more cost-efficient as opposed to the conventional adhesive, mechanical and other joining methods. This review paper presents the detailed progress made by the scientific and research community to date in the direction of the UW of thermoplastic composites. The focus of this paper is to review the recent development of the ultrasonic welding technique for thermoplastic composites to thermoplastic composites, and to dissimilar materials. Different ultrasonic welding modes and their processing parameters, namely, weld time, weld pressure, amplitude, type of energy directors (EDs) affecting the welding quality and the advantages and disadvantages of UW over other bonding techniques, are summarized. The current state of the ultrasonic welding of thermoplastic composites and their future perspectives are also deliberated.

show abstract

Section: Thermoplastic Polymers For Ultrasonic Weldingmentioning

confidence: 99%

Section: Thermoplastic Polymers For Ultrasonic Weldingmentioning

confidence: 99%

Section: Thermoplastic Polymers For Ultrasonic Weldingmentioning

confidence: 99%

See 1 more Smart Citation

Advances in Ultrasonic Welding of Thermoplastic Composites: A Review

et al. 2020

View full text Add to dashboard Cite

show abstract

“…materials with a high modulus of elasticity (PC, PMMA, thermoplastic polyesters, styrene and acetal plastics, and poly-phenylene oxide) are suitable for joining with this method. Plastics with a partially crystalline structure are characterized by higher energy losses in comparison to amorphous plastics and therefore require higher generator output power or welding times [26,27].…”

Section: Ultrasonic Weldingmentioning

confidence: 99%

Polymers welding methods including biodegradable materials

Fabijański

Han

2020

Weld. Tech. Rev.

View full text Add to dashboard Cite

Welding is one of the most popular methods of joining elements not only from metal materials, but plastics also. Their great diversity, chemical structure and physical condition in which they are at the temperature of use has a significant impact on the quality of the joints made. Welding is a particularly useful method of joining, for example, during the welding of packaging, where biodegradable plastics that dominate in this technology, for example with aluminum foil, dominate. This article reviews the methods of welding plastics including biodegradable materials.

show abstract

“…In order to research the mechanism of frictional heat generation during ultrasonic plasticization, we established a simplified physical model [22] referring to ultrasonic welding [23][24][25]. A polymer rod was cut off with an angle of 30 • between the cross-section and the horizontal plane to study the interfacial friction heat generation under ultrasonic vibration.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Interfacial Friction Angle and Contact Area of Polymer Pellets during the Initial Stage of Ultrasonic Plasticization

et al. 2019

View full text Add to dashboard Cite

Interfacial friction heating is one of the leading heat generation mechanisms during the initial stage of ultrasonic plasticization of polymer pellets, which has a significant influence on the subsequent viscoelastic heating according to our previous study. The interfacial friction angle and contact area of polymer pellets are critical boundary conditions for the analysis of interfacial frictional heating of polymer pellets. However, the duration of the interfacial friction heating is extremely short in ultrasonic plasticization, and the polymer pellets are randomly distributed in the cylindrical barrel, resulting in the characterization of the distribution of the interfacial friction angle and contact area to be a challenge. In this work, the interfacial friction angle of the polymer pellets in the partially plasticized samples of polymethyl methacrylate (PMMA), polypropylene (PP), and nylon66 (PA66) were characterized by a super-high magnification lens zoom 3D microscope. The influence of trigger pressure, plasticizing pressure, ultrasonic amplitude, and vibration time on the interfacial friction angle and the contact area of the polymer pellets were studied by a single factor experiment. The results show that the compaction degree of the plasticized samples could be enhanced by increasing the level of the process parameters. With the increasing parameter level, the proportion of interfacial friction angle in the range of 0–10° and 80–90° increased, while the proportion in the range of 30–60° decreased accordingly. The proportion of the contact area of the polymer pellets was increased up to 50% of the interfacial friction area which includes the upper, lower, and side area of the cylindrical plasticized sample.

show abstract

Ultrasonic Welding of Polymers

Cited by 8 publications

References 42 publications

Advances in Ultrasonic Welding of Thermoplastic Composites: A Review

Advances in Ultrasonic Welding of Thermoplastic Composites: A Review

Polymers welding methods including biodegradable materials

Evolution of Interfacial Friction Angle and Contact Area of Polymer Pellets during the Initial Stage of Ultrasonic Plasticization

Contact Info

Product

Resources

About