What are the types of capping machine sealing technology

Capping machine is a common packaging machinery and equipment, widely used in food, medicine, chemical industry and other industries. Its main function is to seal the container to ensure the sealing and freshness of the product. With the development of science and technology, the technology of capping machine is also constantly updated. At present, a variety of sealing technologies have emerged, each with its own unique advantages and applications.
Heat sealing is the most common sealing technology. Its principle is to use high temperature to melt the container materials together to form a seal. Heat sealing technology can be divided into three types: hot plate sealing, hot knife sealing and induction sealing. Hot plate sealing is suitable for various materials, including plastics, metals and glass, and can achieve fast and firm sealing effects. Hot knife sealing is more suitable for thermoplastic materials such as polyethylene and polypropylene. Its advantage is that it can cut and seal at the same time, which improves production efficiency. Induction sealing uses the heat generated by electromagnetic induction to seal the metal foil with the container. It is suitable for glass and plastic containers and can provide tamper-proof sealing effects.
In addition to heat sealing technology, cold sealing technology is also a commonly used sealing method. Cold sealing technology mainly includes two types: pressure-sensitive sealing and vacuum sealing. Pressure-sensitive sealing uses pressure-sensitive adhesives to press container materials together to form a seal. The advantage is that it does not require the use of heat or solvents and is suitable for materials such as paper, foil and plastic film. Vacuum sealing, on the other hand, extracts air from the container before sealing it, and is suitable for products that require an oxygen-free environment, such as food and electronics.
In addition to heat and cold sealing technologies, there are other sealing technologies that are also widely used in capping machines. For example, screw-on sealing, which uses a rotational motion to screw the lid onto the container to form a seal, is suitable for containers such as bottles and jars. Press-on sealing uses pressure to press the lid onto the container to form a seal, does not require a rotational motion, and is suitable for bottles and jars with safety rings. There is also a technology called crimping sealing, which uses a special machine to curl the edges of the container together to form a seal, which is suitable for metal cans and bottles.