Can Ultrasonic Welding Be Used for Packaging?

Packaging is a major guarantee of product quality. This is especially true for the food industry, so the market needs creative packaging solutions to meet the high demands of food packaging in terms of functional characteristics. These requirements include maximizing the shelf life of food, facilitating unpacking, increasing the attractiveness of food appearance, and improving safety of use.

Whether the packaging has an attractive appearance, whether it can maintain stability to the greatest extent and 100% sealing is the standard for consumers to choose products. Some packaging bags, capsules, beverage cartons and other packaging with thermoplastic sealing layers can better guarantee the performance of the product by using ultrasonic welding. Lingke ultrasonic welding technology can also achieve efficient sealing packaging and ensure the beauty of the packaging even if there is product residue in the seam area. The ultrasonic process can be put into use without preheating and cooling procedures, which reduces the time for cleaning and packaging form conversion and saves production time.

The principle of ultrasonic welding machine is to use the high-frequency heat generated by ultrasonic vibration to melt and bond plastic materials together. The heat generated by ultrasonic vibration mainly comes from the internal friction and molecular movement of the material. When ultrasonic vibration is transmitted to the plastic material, it will produce high-frequency compression and stretching, causing friction and collision between molecules, thereby generating heat. This heat can melt the plastic material and bond it together to form a complete seal.

High-frequency vibration: The ultrasonic generator generates a high-frequency electrical signal, which the transducer converts into mechanical vibration.

Heat generation: The vibration is transmitted to the material to be welded through the welding head, and the friction generates heat to melt the material.

Pressure application: After the vibration stops, the pressure is maintained to cool and solidify the molten material to form a firm connection.

Advantages:

The surface welding is beautiful and seamless welding can be achieved;

Fast speed and high efficiency, most ultrasonic welding can be completed within 0.1~0.5s;

Stability, the process is clean, stable and reliable, and the energy consumption is low;

Environmental protection, no other flux, such as adhesives, is required during the welding process;

Application field

Bottle cap welding

Application: Used for sealing beverage bottle caps, such as mineral water bottles, juice bottles, etc.

Advantages: Good sealing, prevent leakage and pollution.

        

Soft packaging welding

Application: Used for sealing soft packaging such as snack bags and condiment bags.

Advantages: Strong sealing, extending the shelf life of food.

Container welding

Application: used for welding plastic containers, such as yogurt cups, jelly cups, etc.

Advantages: fast welding speed and high production efficiency.

Multi-layer composite film packaging welding

Application: used for sealing multi-layer composite film packaging, such as coffee bags, milk powder bags, etc.

Advantages: good sealing and keep food fresh.

Advantages

Efficient: fast welding speed, suitable for large-scale production.

Environmental protection: no chemical adhesives are required to reduce environmental pollution.

Precision: the welding process is controllable to ensure welding quality.

Economic: low equipment maintenance cost and good long-term economic efficiency.

Conclusion

Ultrasonic welding technology has broad application prospects in food and beverage packaging. Its high efficiency, environmental protection and precision make it an ideal choice for the modern food packaging industry. With technological progress and process optimization, ultrasonic welding will play a greater role in food and beverage packaging, improving product quality and production efficiency.