Infrared (IR) Welding

Infrared (IR) welding is a new technology for non-contact heating and joining of plastic parts. Since only the joining area is radiated with infrared rays, other parts are not affected by heat, allowing for a beautiful finish. Ultrasonic welding using vibration or vibration welding can cause scratches, but infrared welding does not cause scratches since it uses non-contact heating. SUMIKASUPER LCP is compatible with infrared welding.

Figure 5-3-1 Testing Method for IR Welding

Figure 5-3-1 Testing Method for IR Welding

Table 5-3-1 IR Adhesive Strength of SUMIKASUPER LCP

IR irradiation time (s) Pressurization (MPa) Melt-in amount (mm) Welding strength (MPa)
40 1.5 1.2 13.2
50 1.5 1.5 12.8
50 3 1.8 13.1
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