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Inserting brass bushing into plastic wire connector
Heating magnetic steel for insertion into plastic for pallet manufacturing
Inserting brass bushing into plastic wire connector
Inserting a piston stop with o-ring into an oil pump assembly
Bonding of electric motor shaft to nylon face fan
Heating Four Brass Inserts Simultaneously
Inserting A Brass Part Into Plastic
Inserting Threaded Steel Parts Into Plastic Lawn Chairs
Heating Brassiere Underwires For Application of Nylon Powder
Plastic to metal bonding of beer kegs
Inserting Steel Studs Into A Plastic Tail Light
Bonding a Plastic Handle to a Surgical Knife
Sealing a Nylon Shell for a fuel vapor Assembly
- Induction
- Syringe Bonding
- Medical Products
The metal to plastic bonding process requires fast, accurate and repeatable heating to avoid such quality defects as flashing (molten plastic overflow) and burning. Modern induction heating systems quickly heat the inserts from the outside surface, limiting the heat energy to the outer edges where heat is needed to reflow the plastic. Longer heating cycles may result in the softening of the internal threads, especially at the low temperatures needed for heating brass inserts. Heating with induction is reliable, repeatable, non-contact and energy-efficient. Solid state systems, when used in conjunction with temperature sensing and control equipment, are capable of heating very small areas within precise production tolerances.
Typical RF power supplies for metal to plastic bonding range from 1 to 20kW, depending on the parts and application requirements.
To overcome the potential problem of a syringe needle becoming disassociated from its plastic hub, we have developed an equipment that bonds the two parts together. The needle is lightly abraded in the joint area and once assembled the joint area is induction heated and a very strong plastic to metal bond is created.
This photograph shows a twin station needle bonding machine. Needles are hand loaded onto a small fixture, typically five at a time (as shown above) and the fixture is loaded into the bonding machine. When the operator closes the sliding door the needles are automatically raised to the heating position for bonding. Whilst one side of the machine is heating the other side can be loaded/unloaded. The heating time for most plastic to metal bonding applications is in the order of 0.5 seconds to 6 seconds. We also manufacture equipment for catheter tip forming. Please contact us for more information.
This plastic to metal bonding application for medical sampling brushes involves the induction heating of the twisted wire section. Once heated, the wires are pressed into the plastic tube and a permanent bond is produced.This same process can of course be used for a variety of applications ranging from screw driver handles through to cosmetic products.