Ultrasonic Sealing: An Ideal Technology for Sensitive Products


    The global ultrasonic sealing for packaging market is characterized by the supply of ultrasonic technology in form of ultrasonic sealing machines meant for packaging applications. The use of ultrasonic sealing machines have challenged the traditional sealing machines that employ heat sealing methods for sealing products such as pouch, bags, cases, etc. Manufacturers operating in the global ultrasonic sealing for packaging market supply ultrasonic sealing machines that are suitable for sealing dry as well as liquid products, across product categories.

    “Ultrasonic sealing uses less packaging material, because the package can be sealed with a narrow seam width”

    Ultrasonic sealing machines for packaging employ the ultrasonic technology wherein the system generates heat within the material to be sealed rather than employing heat externally, according to Transparency Market Research. Thus, the film of thermoplastic nature gets sealed from the heat that is generated within. This keeps the equipment and the tools that interact with the packaging material relatively cooler throughout the sealing process. The possibility to inculcate ultrasonic sealing technology by replacing heat sealing knifes with ultrasonic sealing jaws in filling and sealing equipment has benefitted manufacturers, suppliers and distributors of packaging sealing equipment. Compared to conventional heat sealing systems, ultrasonic sealing has the potential to increase production line speed significantly, according to Bosch. Since the film is only heated in the relevant area, the seam cools down very fast. This allows the seams to be immediately subjected to product load after joining, reducing processing time. Short sealing times, as well the elimination of warm-up and cooling time further increase production efficiency. During the packaging process the product can contaminate the sealing area of the bag, preventing it from being properly sealed. However, by using ultrasonic sealing it is possible to seal through a wide variety of products and liquids reducing the occurrence of this issue. In addition, the appearance of the bag is improved, because the packaging material is never damaged by hot sealing jaws. Ultrasonic sealing uses less packaging material, because the package can be sealed with a narrow seam width and requires less space above the product level. It avoids improperly sealed bags by sealing through product, reducing the need for manpower to sort and empty those bags. The sealing process requires less energy because ultrasonic vibration is only applied at the exact moment of sealing. Unlike traditional heat sealing, which requires the jaws to be heated continuously. Additionally, waste product due to heat-damage is no longer a problem. The global ultrasonic sealing for packaging market thrives on the cost effective and waste minimizing features of ultrasonic sealing machines, according to Transparency Market Research. Packaging manufacturers are able to save cost by reducing the energy consumption required in traditional heat sealing methods. Ultrasonic sealing technology also minimizes the risk of product damage due to high temperatures created by heat sealing. The cold approach of the ultrasonic sealing machines allows manufacturers to seal the packaging closer to the product thus saving on material requirements. Apart from savings in terms of energy consumption and material requirements and minimizing waste, ultrasonic sealing machines are also beneficial as they cut need to clean sealing jaws of the ultrasonic machines. In October 2016, Bosch Packaging Technology, Inc., introduced vertical and horizontal flat pouch machines with ultrasonic sealing technology options. The machine has the capacity to produce on an average 300 products per minute. In February 2013, machines manufacturer Rinco Ultrasonics AG launched the FPA series ultrasonic pouch sealing machines. The ultrasonic sealing technology used by Rinco Ultrasonics AG aims at reducing time per cycle by increasing the speed of generating clamp force for sealing. The global market for ultrasonic sealing for packaging is expected to be concentrated largely in the North American region, followed by European region. Lucrative prospects in the flexible packaging market for food and beverages applications has propelled packaging equipment manufacturers to focus on high growth markets in Asia Pacific and Europe. Ultrasonic sealing technology for pouches is anticipated to attract investments in high growth and emerging markets in Asia.
    Fatima Saab
    Editor & Researcher