LED Sealant

There are mainly three types of LED packaging: glue, potting, and molding. Basically, the difficulties of process control are bubbles, lack of material, and black spots. The design is mainly the selection of materials, and the choice of epoxy and brackets that are well-combined. (General LED cannot pass the air tightness test).

LED dispensing TOP-LED and Side-LED are suitable for dispensing packaging. Manual dispensing packaging requires high levels of operation (especially white LEDs). The main difficulty is the control of the dispensing volume, because the epoxy will thicken during use. Dispensing for white light LEDs also has the problem of phosphor precipitation causing color difference in light output.

LED potting package The package of Lamp-LED adopts potting form. The potting process is to first inject liquid epoxy into the LED molding cavity, then insert the pressure-welded LED bracket, put it into the oven to cure the epoxy, and then take the LED out of the cavity to form.

LED molding package Put the pressure-welded LED bracket into the mold, clamp the upper and lower molds with a hydraulic press and vacuum, put the solid epoxy into the entrance of the injection channel and heat the hydraulic ejector into the mold channel. The epoxy enters each LED molding groove along the glue channel and cures.