Rinco Ultrasonics has claimed a breakthrough for ultrasonic film sealing of flexible packaging aimed at dry and liquid foods.
The company’s FPA series ultrasonic pouch sealing systems enable users to increase seal strength, improve aesthetics, and broaden the processing window versus other ultrasonic sealing and heat sealing processes, said the firm.
The FPA-4500 was designed specifically for sealing pouches with up to four and a half square inches of seal area while the FPA-4500S was created for use in duplex and triplex applications where a narrow profile is required.
Larger seal area
Seals anywhere from 2-mm to 25-mm are now possible compared to 1- to 2-mm previously, according to Gordon Hull, managing director of Rinco Ultrasonics.
Depending upon the film used, Rinco has determined that its interlocking pattern can provide a 20% stronger bond than conventional ultrasonic seals.
Ultrasonic devices are used to detect objects and measure distances and ultrasonic welding can produce hermetic seals.
Rinco said its FPA series of ultrasonic sealing systems were designed to replace existing heat sealing equipment on liquid filled pouch form-fill-seal (FFS) machinery or pre-made pouch systems.
The FPA series actuators are designed specifically for the packaging industry as a drop-in retrofit to convert heat sealing stations to ultrasonics.
Patented seal tech
The systems incorporate Rinco’s patented PPS0145 seal technology and feature a rigid actuator capable of generating the clamp forces required to seal pouches with minimal cycle time.
Rinco’s PPS0145 interlocking film sealing technology allows seal patterns with greater surface area and production of contour-shaped seals, unlike the straight line versions offered by other ultrasonic equipment.
“Our technology propels ultrasonic welding to an entirely new level, broadening the design and manufacturing options for OEMs and co-packers, simplifying the process, and making it less costly to operate,” said Hull.
“The limitations of ultrasonics have been solved, making the joining system a highly useful and viable option for a range of flexible packaging applications.”
The ultrasonic film sealing system produces seals with greater surface area than competitive systems and provides the widest processing window of any ultrasonic sealing system currently on the market, said Rinco.