Radio Frequency Welding

RF Welding Used for Medical Pouches Made with Medalist Elastomers

Teknor Apex Company and Genesis Plastics Welding are jointly announcing this breakthrough at MD&M East, where ecoGenesis RF plastics welded samples of fluid drainage and storage bags from Medalist-based film are on display at the exhibits of Genesis (Booth 968) and Teknor Apex (Booth 829A).

While conventional RF plastics welding works well with such polymers as PVC and TPU, low dielectric loss materials such as Medalist elastomers from Teknor Apex have until now not been bondable with this process. The ecoGenesis RF plastics welding technology developed by Genesis enables film produced from a Medalist elastomer to form strong permanent bonds with itself as well as with polypropylene and similar polymers. And while the alternative technique of heat sealing produces only a straight-line bond, the sample bags shown at MD&M East exhibit the ability to weld complex patterns in one sequence, displaying the wide range of design possibilities available for Medalist elastomers with ecoGenesis RF plastics welding technology.

This new capability for joining and assembly makes available to manufacturers of medical fluid delivery, storage, and drainage bags several important advantages over widely used PVC. Besides being free of halogens and phthalates, Medalist elastomers are available at lower hardness ranges, provide a broader processing window, exhibit greater elasticity and superior low-temperature flexibility, have a wider range of service temperatures, and save weight because of their lower density. Like PVC, Medalist elastomers are available in fully transparent grades.

"ecoGenesis RF plastics welding is the latest addition to a rapidly expanding portfolio of methods for fabricating medical devices with components made from Medalist elastomers," said Elliott Pritikin, new business development specialist for Teknor Apex's Thermoplastic Elastomer Division. "High-purity Medalist compounds can be sealed or bonded using standard techniques, including adhesive bonding, vibration welding, heat-sealing-and now RF welding."

The availability of RF plastics welding capability for Medalist elastomers gives greater scope for designers and processors of medical bags and pouches, noted Tom Ryder, president and CEO of Genesis Plastics Welding. "In making it possible to RF-weld Medalist elastomers, the proprietary ecoGenesis technology opens the door to lower manufacturing costs, elimination of heat-seal additives, and the possibility of reducing raw-material costs. In addition, RF plastics welding yields dependable, clean-looking seals-even in intricately shaped patterns.

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RF welding is a straightforward technology, afterward the rudimentary campaign indispensable headed for put on such a weld boast not altered because the commencement of the process. Today, as in 1942, we hardship a generator headed for bestow RF, a transmission procession headed for transmit power, a force down headed for make a claim break open plus an electrode in the pet numerical prototype headed for be real welded. before sealing.” at what time substance is brought hooked on drop a line to in the midst of an electromagnetic field, a number of portion of the electromagnetic arena willpower shot by means of a adjustment of energy state. As a result, it willpower be present converted headed for section as a consequence degenerate in the contacted matter. The measure headed for which this con-version willpower occur, before the efficiency of this conversion of energy royal is needy taking place the atomic plus molecular makeup of the matter, the frequency of the electromagnetic field, furthermore the arena latent (Volt-age/cm). The duration dielectric heating accurately describes this miracle by the side of one frequency although RF before HF heating describes the deal with greater than the lim-ited frequency assortment commencing 1 headed for 200 megacycles/sec (megahertz/sec). The quarter everyplace a large amount of the technological changes boast in use position is in the works commencing which the distinctive campaign are constructed. rock-hard royal works comprise replaced mercury spray rectifier tubes. Digital timers comprise replaced industrialized timers. Programmable reason Controllers (PLC) comprise replaced relay logic. at what time a PLC is worn together with linear afterward optical encodes, inflexible restrain bottle be present achieved greater than the a number of functions with the intention of verify the special characteristics of the weld. with these types of campaign it is viable headed for television along with manipulation functions of time, pressure, stream furthermore voltage after that their profiles. at what time advanced background management systems are worn in conjunction in the midst of these devices, high alacrity repeated creation systems bottle be real built. countless hundreds of such systems are in manipulate right through the U.S. These systems manufacture a eclectic category of goods representing the automotive, stationary products, next remedial industries. The abiding brook of new to the job RF alert resources heart brought headed for the souk extra contact the industry. In addition, additives moreover RF alert adhesives are constantly human being residential representing particular applications. It is instantly viable headed for hit it off resources with the intention of in the times of yore were well thought-out incompatible representing the RF process. These changes are chance positive a new to the job assortment of goods with the intention of bottle at this moment be present manufactured next to this epoch proven technology. This willpower boast a abundant look in the medicinal industry, as it tries headed for eliminate the manipulate of vinyl. equally electron beam also laser welding, at what time at the outset discovered, were inspiration headed for ensue viable substitution technologies. However, these technologies boast been bring into being headed for be real extra applicable representing stain before stratum welding of metals before additional rigid resources everyplace welding era are unhurried in transcription with hours. In RF welded products, welding era are unhurried in seconds before fractions thereof. Guideline believes the likelihood of these suitable competing technologies is self-same low. In rule belief in attendance is not anything taking place the horizon with the intention of desire exchange RF welding in the subsequently 5 headed for 10 years. Its position desire ensue as get hold of as it is today, not solitary as the economically chosen feature headed for weld selected materials, except in countless hand baggage the solitary realistic method. The U.S. companies a large amount apt headed for be real the key players 10-20 time in the impending are corridor Dielectric robot Co. as a consequence Thermex Therma-tron Inc. equally of these companies boast deepness in their manufacturing along with technological staffs; a meat of older, veteran technological professionals, in the midst of a nice blend of younger talent at the back of them heart groomed headed for acquire the lead.

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