There are various methods of bonding plastic molded parts of the same material, such as hot-plate welding, ultrasonic welding, vibration welding and laser welding. However, little had been known about the methods of bonding different materials, except adhesives. As a method which enables such different materials to be bonded, an entirely new bonding technique by application of high-frequency induction heating is introduced below. |
[ Basic principle ] |
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As shown in Fig. 1, a special metal foil is sandwiched between different materials (resin materials A & B) to be bonded. By applying a high-frequency current to the externally placed induction coil, the metal foil generates heat and softens/melts the resin surfaces while bonding the metal foil and resins strongly. This enables different materials to be bonded. Since bonding is completed only in the order of a few seconds during this period, this method is very efficient even compared with conventional resin welding methods. |
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Fig. 1 Principle of bonding |
An example of electromagnetic
induction welder |
[ Bonding strength ] |
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The following are examples of measuring the bonding strength of various combinations of different materials by tensile shear using dumbbell-shaped test pieces: |
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Combination of materials |
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POM resin (DURACON® M90-44)/PBT resin (DURANEX®2002)
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POM resin (DURACON® M90-44)/PPS resin (FORTRON®0220A9)
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PBT resin (DIRANEX® 2002/PPS resin (FORTRON® 0220A9)
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Cf. PPS resin (FORTRON®0220A9)/PPS resin (FORTRON®0220A9) (same material)
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37.2 |
* The above bonding strength does not indicate the representative value of each combination above. It may vary depending on the welding conditions. |
The data shown in this home page are based on our accumulated experience and laboratory data, and not always directly applicable to your products used under different conditions. Therefore, we can not guarantee that the contents of this home page are directly applicable as they are to the specific condition in our customers, and we appreciate your final decision on the use of these data.
Moreover, it is not the one that our company guarantees not to violate third party's intellectual property right for the customer's executing, applying, and processing or using information offered in the homepage.This company will not bear any responsibility for the contents of linked home pages, or damages resulting from its use thereof. |
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Joint technology of different kind material
