Wittmann Battenfeld introduces new internal welding process

23-May-13
With the IMIW process, Wittmann Battenfeld is offering a new technology which makes it possible to insert-mold parts with a gas- and waterproof protective layer. This process is of special interest for RFID technology (RFID= Radio Frequency Identification). RFID is not only increasingly used in the automotive sector, but is also becoming more and more common in medical applications, in transport, in the electrical industry and other branches of industry. The advantage of RFID is its ability to transmit an extremely large volume of information within a minimum of time and without direct contact. All RFID components must be protected from mechanical damage, moisture, heat and other detrimental effects. Therefore these parts are embedded for their protection. There are a number of different methods to connect two halves of a housing or two half shells, such as bonding, welding, clamping or bolting, to name just a few With the innovative IMIW process, it has now become possible for the first time to establish the connection directly between the contact surfaces, which means right where it is actually needed. In this case, the previously injection-molded halves are joined together by injection- molding the connection between the contact surfaces with the same plastic material from the inside. By way of this IMIW-process (IMIW = In-Mould Internal Welding), it is now possible to create a gas- and waterproof connection between the two halves and thus ensure optimal protection for the sensitive electronic components. Special advantages of this new process are that the molded parts come out without any ridges or welding beads, so that downstream finishing can be dispensed with, that they are joined together by a gas- and waterproof connection in the same production process, and that the joint is extremely robust This process is also suitable for other applications where two parts are to be connected with each other and the above-mentioned advantages are desirable. The technology developed by Barkley Plastics, UK is sold exclusively by Wittmann Battenfeld.
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