January 30, 2017
Companies that prepare or process food have extensive cleaning requirements that can be addressed with ultrasonic cleaning systems such as those offered by Kaijo. Machines, tools and even the food itself can be cleaned quickly and completely using ultrasonic cleaning baths. While machines and most tools can be cleaned with intense ultrasonic cleaning delivered at low ultrasonic frequencies, delicate food items can be cleaned at higher frequencies with less robust cleaning action. In each case, the ultrasonic system frequencies, power, bath size and transducer configuration can be matched to specific requirements for delivering effective cleaning performance.
How Ultrasonic Cleaning Works
Ultrasonic cleaning systems consist of an ultrasonic generator, transducers and a tank for the cleaning solution and the parts to be cleaned. The generator produces the ultrasonic frequencies and is wired to the transducer, which converts the electric frequency signal to ultrasonic pressure waves in the cleaning solution. Transducers can be placed in a tank as independent units, integrated in the tank bottom or wall or bolted onto a tank. The cleaning solution can be plain water or a mild detergent can be added to help with the speedy removal of specific contaminants.
When the ultrasonic waves from the transducers travel through the cleaning solution, millions of microscopic cavitation bubbles form in the low pressure areas between the waves and collapse in the high pressure at the peaks of the waves. This collapsing of bubbles creates a strong scrubbing action that removes impurities and contaminants from the surfaces to be cleaned. The higher the frequency, the smaller are the bubbles and the gentler is the cleaning action. For companies in the food industry, metallic tools and machine parts can be cleaned of oil, grease and food residue with low frequency ultrasonic cleaners while delicate plastic parts and food can be cleaned with the gentler action of higher frequencies.
Advantages for the Food Industry
The machines and tools used by the food industry in the processing and preparation of food products require very frequent cleaning. Companies using ultrasonic cleaners obtain a competitive advantage because their cleaning is more efficient. As a result, they can reduce their maintenance costs and increase their productivity.
Ultrasonic cleaning is not only faster than traditional cleaning methods it’s also much less labor-intensive. Using ultrasonic cleaning systems, food plants can clean their equipment and resume production much faster than with mechanical scrubbing and strong solvent baths.
Secondly, ultrasonic cleaning is more effective. The bubble action of ultrasonic cleaning systems removes contaminants and foreign matter along oddly shaped pieces, within cracks and crevices and through holes. Areas that are hard to access with scrubbing pads and manual cleaning methods are no challenge for ultrasonic cleaners. The bubbles are created everywhere the cleaning solution penetrates and cleaning is even and complete.
Finally ultrasonic cleaning methods reduce chemical and solvent use. The systems clean with only plain water or with mild solvents or detergents. There is no need for soaking in strong detergents or scrubbing with abrasives. Ultrasonic cleaning can save substantial sums when these chemicals are no longer needed and the ultrasonic process is more environmentally friendly as well.
Kaijo has been supplying ultrasonic cleaning systems to customers in the food industry which is helping them improve their bottom line. The company has a complete range of ultrasonic cleaning systems and can offer active support to clients in food processing plants. Customers who have specific needs can receive components, such as ultrasonic generators and transducers, that can work with the existing tanks of their traditional cleaning systems. Kaijo is helping such customers find new applications for ultrasonic cleaning in their plants and customizing equipment to fit their processes while improving performance.Read More
January 23, 2017
Medical implants have rigorous FDA and other cleaning requirements while many implants may be delicate and high-value. If implants are not cleaned thoroughly they may introduce contaminants into the body, but if they are handled roughly during cleaning, they may suffer damage. Industrial ultrasonic cleaners can provide effective cleaning and rinsing with a cleaning action that is appropriate for even the most delicate devices. These systems rely on cavitation bubbles to clean a variety of parts and the intensity of the cleaning action can be adjusted by varying the ultrasonic frequency. Kaijo offers a complete range of ultrasonic cleaning systems ideal for medical cleaning applications and specifically for the cleaning of medical implants.
Medical devices may be structurally delicate or they may be made of materials that are compatible with body tissues but have easily damaged surfaces. It is critical that the structure of the device remains intact during cleaning and that smooth surfaces are not altered, damaged or pitted.
Traditional cleaning methods include mechanical means such as scrubbing and chemical methods with strong solvents. Both have disadvantages in that any scrubbing action may affect the structure of the device and solvents strong enough to remove stubborn contaminants may also attack smooth surfaces. Ultrasonic cleaning systems avoid these pitfalls by relying on ultrasonic waves for cleaning.
As an ultrasonic sound wave passes by the part to be cleaned, it creates microscopic bubbles in the cleaning solution. When the wave has passed, the bubbles collapse and deliver a powerful scrubbing action on the surface of the material to be cleaned. Lower ultrasonic frequencies create larger bubbles with a more intense cleaning action. By choosing a frequency appropriate for the level of cleaning intensity needed, ultrasonic cleaners can deliver the powerful cleaning required without damaging the medical device.
Medical device implants often have complicated shapes related to their function and the implant location. It is difficult to clean parts with odd angles and bumps or with dead end holes and crevices. With traditional cleaning methods the scrubbing tools pass over indentations or holes and apply extra pressure on bumps. Solvents may not penetrate dead end holes or concentrations may vary once some cleaning takes place.
With ultrasonic cleaners, the cleaning bubbles are evenly distributed throughout the cleaning solution, whether the solution is inside a hole or alongside a smooth surface. Cleaning action is rapid and thorough on all surfaces exposed to the cleaning solution. Foreign matter and contaminants are removed evenly everywhere.
Rinsing Medical Implants
Traditional cleaning methods leave powerful solvent residues on the implant and these are often difficult to remove completely. With ultrasonic cleaning systems, devices may be cleaned in water, but some contaminants require a mild solvent. Even when cleaning in water, rinsing is often necessary because the water has become contaminated with the foreign matter the ultrasonic cleaning has removed.
For rinsing as for cleaning, ultrasonic cleaners deliver improved performance and better outcomes compared to traditional methods. A bath in deionized water using ultrasonic cleaning removes all traces of chemicals and solvents through bubble action in the same places that were previously cleaned. The result is a clean medical device implant ready to be placed in a patient.
Kaijo’s ultrasonic cleaning systems are ideal for use in medical device transplant cleaning applications. The systems are available in a range of frequencies that can match any cleaning intensity required, from the most robust to extremely delicate. Kaijo can advise customers on the best system for their particular applications and can offer active support to clients who want to use ultrasonic cleaners for their medical implants.Read More