Using high-power ultrasonic generator and high-power transducer, titanium alloy horn, the sealing effect is stable, and the trimming surface is smooth and does not scratch. Stable and reliable performance and long life. The ultrasonic mold is oxidized by electroplating, which is more durable and has a more beautiful appearance.
plastic hoses for various materials such as toothpaste, cosmetics, oil, food, industrial supplies, etc.
Q: How does ultrasonic plastic welding machine work?
A: When ultrasonic waves act on the thermoplastic plastic contact surface, high-frequency vibrations of tens of thousands of times per second are generated. This high-frequency vibration reaches a certain amplitude, and the ultrasonic energy is transmitted to the weld zone through the upper weldment, because the weld zone is two At the interface of the welding, the sound resistance is large, so local high temperature is generated. Moreover, due to the poor thermal conductivity of the plastic, it can not be dissipated in time and gather in the weld zone, so that the contact faces of the two plastics melt rapidly, and after a certain pressure, they are integrated into one. When the ultrasonic wave stops, let the pressure last for a few seconds to solidify it, thus forming a strong molecular chain for welding purposes, the welding strength can be close to the strength of the raw material. The quality of ultrasonic plastic welding depends on the amplitude of the transducer welding head, the applied pressure and the welding time. The welding time and the welding head pressure can be adjusted. The amplitude is determined by the transducer and the horn. The interaction of these three quantities has a suitable value. When the energy exceeds the appropriate value, the melting amount of the plastic is large, and the welding material is easily deformed; if the energy is small, the welding is not easy, and the applied pressure is not too large. This optimum pressure is the product of the side length of the welded portion and the optimum pressure per 1 mm of the edge.
Plastic ultrasonic welding technology is a kind of heating connection method in which the molecules of the plastic part contact surface are quickly fused by ultrasonic waves. It has the advantages of short time, no damage on the surface, no heat in the non-welded area, no need for pre-treatment, simple operation, etc. It has been widely used in aerospace, instrumentation, food packaging, electronics industry and other fields.
The process parameters of the plastic ultrasonic welding machine are related to the frequency of the welding equipment and the shape of the welding material, and have a significant influence on the welding quality. Most of the research work reported in [1~3] is based on 20KHz ultrasonic welding equipment and sheets and plates of plastic and composite materials. The welding quality and welding amplitude, welding time, welding pressure and other processes are found. The parameters are related. However, there are few reports on ultrasonic welding of plastic films. Wu Deguang  for packaging plastic polyester (12μmPETP) / low density polyethylene (100μm LDPE) film, PETP (12μm) / AL (12μm) / LDPE (75μm) film Alejandro et al.  conducted an exploratory study on ultrasonic welding of thermoplastic polyurethane (TPU) films with a thickness of 0.254 to 1.016 mm. The film thickness was above 100 μm and the welding equipment frequency was 20 KHz. However, they did not systematically study plastic films. The relationship between welding quality and process parameters.
In this paper, the welding process of polyester (12μmPET)/polypropylene (30μmCPP) and polyester (12μmPET)/polyethylene (30μmPE) composite film with total thickness less than 50μm was studied by 40KHz ultrasonic equipment. Welding amplitude, welding time and welding were obtained. The influence of process parameters such as pressure on the heat sealing strength of welded joints.