How does Mingyang ultrasonic ensure its highly airtight welding?
How is the common water cup with refrigerant welded? For example, plastic children’s bottle manufacturers, plastic cup manufacturers with refrigeration liquid, what problems do they need to pay attention to?
For ultrasonic welding processing of plastic products, because of the differences in product functions and functions, there are more demands in the manufacturing process, and higher requirements for Mingyang ultrasonic welding equipment. When there is liquid trouble in ultrasonic welding process, how to effectively reduce the liquid interference to ultrasonic welding and complete the highly airtight ultrasonic welding?
Welding surface design：
For the plastic products containing liquid welding, on the one hand, it is necessary to ensure the absolute tightness after ultrasonic plastic welding, and at the same time, it is necessary to ensure the plastic parts to the liquid carrying capacity.
The welding surface should be above the horizontal plane where the liquid is, to ensure that there will be no side leakage of liquid due to the unreasonable position of the welding surface in the welding process. Suitable welding surface height, to ensure that the liquid will not be spilled by ultrasonic energy oscillation.
Mingyang ultrasonic welding wiring design has unique welding experience, design reasonable welding wiring can not only assist ultrasonic welding energy more effective conduction, at the same time save energy pressure output, to ensure environmental protection, efficient and high-quality ultrasonic welding. The liquid factor should be considered in the design of ultrasonic welding connection for plastic loaded with liquid to ensure its loading capacity and airtight reliability.
Clean welding position;
The presence of liquid for ultrasonic conduction energy has a absorption effect, especially common oil or water will absorb ultrasonic energy of about 20%, so in the ultrasonic welding position, try to avoid the presence of oil or water (wet feeling will also affect). Improvement plan: the welding surface can be properly cleaned before welding to ensure that the welding contact position is dry and clean; For special attachments, scale remover can be selected according to their material properties, and corrosive or soluble solvents should be avoided. Avoid the formation of welding obstruction due to the spatter of liquid containing the damage of ultrasonic welding airtight.
Fill the liquid properly；
Excessive solution is not only easy to spill, but also affects the ultrasonic welding energy. It is recommended that the filling liquid should not be higher than 80% of the container. To prevent pollution of welding surface, appropriately strengthen the output power of ultrasonic welding equipment. Enhance welding strength and tightness.
For plastic products that need to contain more liquid and may need to eliminate air, injection holes can be left during welding. After ultrasonic welding, vacuum or manual inhalation (such as plastic stationery, plastic jewelry, etc.) can be directly injected into the liquid.
Post time: Jul-05-2022