What is an ultrasonic seal?
Ultrasonic sealing is the use of mechanical vibrations to connect materials to molecular binding. Electricity is converted into a high -frequency acoustic signal that is combined with pressure into pieces to connect to form a seal as strong or stronger than the materials themselves. It can only be used on plastic or combination of plastic and metal. The computer controls the seal time and other adjustments to allow accurate handling of multiple materials and types of seals. This process is cost -effective and potentially safer than other methods because it generally does not require thermal or hazardous materials such as solvents or adhesives. Ultrasonic refer to frequencies outside the range of human hearing, ie over 20,000 hertz. The vibrations are reinforced and directed by the materials to be sealed. The pieces are pushed together and vibrations forces parts together until they are connected to the molecular level.
The common applications of ultrasonic seals include connecting thermoplastic resins such as polyethylene or polystyrene. Metal and plastic can also be combined to this method. The seals can be as simple as the overlapping layers or can insert an insert into the base or insert the mail perpendicular to the base. Ultrasonic seals are located on blister and packaging. This technology can be closed by completed tubes. The strength of the seal can make this process suitable for handling.
microprocessor controlled ultrasonic sealing machines can produce consistent and reliable seals with minimal working requirements. Fully automated machines require only limited training without affecting speed or quality. Editing ICROPROCESSOR MNNOPROCESSOR allows rapid changes in seal specifications such as frequency, size and source material.
The ability to seal without the heat applied causes ultrasonic seals particularly suitable for food products whoThey are sensitive to temperature. It is also used in pharmaceutical devices. Closing may be effective even if the sealing area is contaminated by a food product.
In most applications, no heat is required for this process, eliminating heat generation costs. Most processes do not require any glue, thread or solvents to ensure good closure. Eliminating other components in the assembly line simplifies the production process and reduces production and stock costs.