What sealing technologies are usually used in fully automatic drum packaging machines?

The sealing technology of fully automatic drum packaging machines is a key component to ensure the sealing and integrity of the package. Common sealing technologies include heat sealing, cold sealing, ultrasonic sealing, impulse heat sealing, hot melt adhesive sealing, laser sealing and pressure sealing.

Heat sealing technology heats the sealing material to melt and bond it together, and is suitable for thermoplastic materials such as polyethylene and polypropylene. It can provide high-quality seals and adapt to materials of various thicknesses. It is widely used in a variety of product packaging. Cold sealing technology uses adhesives to bond materials under pressure without heating, which is ideal for heat-sensitive products such as chocolate and pharmaceuticals. This method has low energy consumption and does not affect the properties of the product.

Ultrasonic sealing uses high-frequency ultrasonic vibrations to cause the material molecules to generate heat through friction, so that they melt and bond, which is suitable for thermoplastic materials that need to be sealed quickly. Ultrasonic sealing is fast, low energy consumption, and has little thermal impact on the material, which is very suitable for high-efficiency packaging needs. Pulse heat sealing heats the sealing area for a short time and then quickly cools it to form a seal, which is particularly suitable for packaging that requires high-quality sealing, such as food and medical products. It can ensure the strength of the seal and is suitable for thicker or multi-layer materials.

Hot melt adhesive sealing uses hot melt adhesive to bond packaging materials together in a heated state, which is suitable for packaging that requires strong bonding, such as heavy packaging. Its strong bonding force is suitable for a variety of materials and can provide reliable sealing. Laser sealing uses a laser beam to heat the sealing area to melt and combine the materials, which is suitable for high-precision packaging, such as pharmaceutical and high-end food packaging. Laser sealing technology has the characteristics of high precision and suitability for complex-shaped packaging.

Pressure sealing squeezes the packaging materials together through mechanical pressure to achieve sealing, which is suitable for certain specific materials and products. This method does not require heating and is suitable for specific application scenarios.

These sealing technologies can be used alone or in combination to achieve the best sealing effect and packaging quality. Choosing the appropriate sealing technology can ensure that the product is effectively protected during transportation and storage, and further improve the market competitiveness of the product.