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Method for detecting sealing performance of LED packing glue

A technology of LED packaging and detection method, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, and detecting the appearance of fluid at the leakage point, etc., which can solve the problems of expensive instrument cost, time-consuming and power consumption, and achieve the detection cycle The effect of shortening, simple material and good sealing

Active Publication Date: 2013-12-18
兆舜科技(广东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this detection method are: 1. The cost of the required instruments is expensive; 2. Time-consuming and power-consuming

Method used

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  • Method for detecting sealing performance of LED packing glue
  • Method for detecting sealing performance of LED packing glue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A method for detecting the airtightness of an LED encapsulant, comprising the steps of:

[0047] (1) Mix A and B glues according to the weight ratio, the weight ratio of the A glue and B glue is 1:1, stir for 4 to 12 minutes, so that the A and B glues are evenly mixed;

[0048](2) Defoaming: Put the well-mixed glue in a vacuum drying oven for 5 to 12 minutes to defoam, and the vacuum degree of the vacuum drying oven is -0.09~-0.1MPa;

[0049] (3) Glue filling: the base material (LED lamp beads or lamp holders) should be thoroughly cleaned and dried at 140°C before glue filling. Use a disposable toothpick to dip an appropriate amount of glue on the lamp beads according to the size of the lamp beads. Automatic leveling, observe the amount of dispensing obliquely, and the level with the upper concave surface of the lamp bead is the standard;

[0050] (4) Heating: Put the glue-filled lamp beads on a horizontal heat-resistant object, and then heat them in an oven at 100°C f...

Embodiment 2

[0054] A method for detecting the airtightness of an LED encapsulant, comprising the steps of:

[0055] (1) Mix the A and B glues according to the weight ratio, the weight ratio of the A glue and the B glue is 1:4, stir for 4 to 12 minutes, so that the A and B glues are evenly mixed;

[0056] (2) Defoaming: Heat the uniformly mixed glue to 45°C and keep it for 5 minutes, then put it in a vacuum drying oven for 5 to 12 minutes to defoam, the vacuum degree of the vacuum drying oven is -0.09~-0.1MPa);

[0057] (3) Glue filling: the base material (LED lamp beads or lamp holders) should be thoroughly cleaned and dried at 160°C before glue filling. Use a disposable toothpick to dip an appropriate amount of glue on the lamp beads according to the size of the lamp beads. Automatic leveling, observe the amount of dispensing obliquely, and the level with the upper concave surface of the lamp bead is the standard;

[0058] (4) Heating: Put the glue-filled lamp beads on a horizontal heat...

Embodiment 3

[0062] A method for detecting the airtightness of an LED encapsulant, comprising the steps of:

[0063] (1) Mix A and B glues according to the weight ratio, the weight ratio of the A glue and B glue is 1:2, stir for 4 to 12 minutes, so that the A and B glues are evenly mixed;

[0064] (2) Defoaming: Heat the uniformly mixed glue to 55°C and keep it for 1 minute, then place it in a vacuum drying oven for 5 to 12 minutes to defoam, the vacuum degree of the vacuum drying oven is -0.09~-0.1MPa;

[0065] (3) Glue filling: the base material (LED lamp beads or lamp holders) should be thoroughly cleaned and dried at 150°C before glue filling. Use a disposable toothpick to dip an appropriate amount of glue on the lamp beads according to the size of the lamp beads. Automatic leveling, observe the amount of dispensing obliquely, and the level with the upper concave surface of the lamp bead is the standard;

[0066] (4) Heating: Put the glue-filled lamp beads on a horizontal heat-resista...

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Abstract

The invention relates to a method for detecting the sealing performance of LED packing glue. The method comprises the following steps that (1) glue A and glue B are mixed, and then bubble discharging, glue pouring and heating solidification are carried out; (2) a solidified light bead is soaked in red ink to be stewed, then the glue impregnation condition of the red ink is observed under a microscope. The method is high in accuracy, simple to operate, and suitable for detecting the sealing performance of the LED packing glue.

Description

technical field [0001] The invention relates to a method for detecting the airtightness of LED encapsulation glue. Background technique [0002] With the gradual development of LED lights, it is already a future trend to gradually replace some traditional light source products. As a supporting industry, LED packaging glue has a particularly optimistic prospect. However, at present, it is an industry that has just started and is not yet mature in China, so there is no corresponding national standard for the testing standards of LED packaging adhesives, and the testing methods of various enterprises are varied. [0003] Sealing test, as the name suggests, refers to testing the airtightness of the sample and whether it leaks. It has a wide range of applications and is suitable for packaging bags, boxes, bottles, The tightness testing of cans, etc. can also be tested for products that have their own sealing requirements. [0004] The leak detection methods disclosed in the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/20
Inventor 黄召群林旭锋吴国豪
Owner 兆舜科技(广东)有限公司
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