Anti-static bubble bag to block water vapor barrier detection scheme

Abstract: The anti-static bubble bag used for packaging electronic components should have a good moisture-proof effect, so the moisture resistance of the bubble bag needs to be strictly controlled. This article uses the W3 / 030 water vapor transmission rate tester to test the water vapor transmission rate of the anti-static bubble bag samples, and details the scope of equipment, test principle and test process, so as to effectively verify the anti-static bubble bag pair for the enterprise The barrier to external moisture provides a reference.

Keywords: bubble bag, anti-static bubble bag, water vapor transmission rate, moisture barrier, barrier property, water vapor transmission rate tester

1. Significance

The anti-static bubble bag uses its own bubble structure to prevent internal products from being damaged by impact, and has the effects of anti-static, thermal insulation, shock resistance, pressure resistance and moisture resistance. It is widely used as a protective packaging for various electronic components and other precision components . Because the internal structure of electronic components is prone to rust, short circuit and other problems after being damp, the effective moisture resistance of the bubble bag is very important. If the barrier performance of the air bubble bag is poor, that is, the water vapor transmission rate is large, it is easy to cause the electronic products to be prematurely aging and unusable, and the anti-static air bubble bag will not play a role in preventing moisture. In this paper, the W3 / 030 water vapor transmission rate test system is used to test the barrier performance of the anti-static bubble bag to the external water vapor, so as to provide a reference for the relevant production enterprises to effectively screen packaging materials.

Figure 1 anti-static bubble bag

2. Reference Standard

The domestic test methods for water vapor transmission rate of packaging materials are cup method, electrolytic sensor method, infrared sensor method, humidity sensor method, etc., the reference method standards are GB 1037 "plastic film and sheet water vapor permeability test method cup Method ", GB / T 21529" Determination of Water Vapor Transmission Rate of Plastic Films and Sheets ", GB / T 26253" Infrared Detector Method of Water Vapor Transmission Rate of Plastic Films and Sheets ", GB / T 30412 "Moisture Sensor Method for Measuring Water Vapor Transmission Rate of Plastic Films and Sheets". This test uses the principle of the cup method. The reference standard is GB 1037 "Test method for water vapor permeability of plastic films and sheets".

3. Test samples

A sample of anti-static bubble bag provided by an enterprise.

4. Test equipment

The W3 / 030 water vapor transmission rate tester independently developed and designed by Jinan Languang Electromechanical Technology Co., Ltd.

Figure 2 W3 / 030 water vapor transmission rate tester

4.1 Test principle

W3 / 030 adopts the principle of weighing test of the penetrating cup. At a certain temperature, a specific humidity difference is formed on both sides of the sample. Water vapor passes through the sample in the penetrating cup and enters the dry side. The amount of change of the weight of the moisture-permeable cup with time, so as to obtain parameters such as the water vapor transmission rate of the sample.

4.2 Scope of application

(1) This equipment is suitable for water vapor transmission rate testing of packaging materials such as plastic films, sheets, paper, cardboard and textiles, non-woven fabrics.

Film materials: suitable for water vapor permeability testing of various plastic films, paper-plastic composite films, geomembrane films, coextruded films, waterproof and breathable films, aluminized films, aluminum foil, aluminum foil composite films and other film-like materials;

Sheets: suitable for water vapor transmission rate testing of various engineering plastics, rubber, building materials (waterproof materials for construction), thermal insulation materials and other sheet materials. Such as PP sheet, PVC sheet, PVDC sheet, nylon sheet, etc .;

Suitable for water vapor transmission rate testing of textiles, non-woven fabrics and other materials;

In addition, it is also suitable for the water vapor transmission rate test of liquid crystal display film, solar backboard, sterile wound protection film, beauty mask and other materials;

(2) This equipment can meet many national and international standards, such as GB 1037, ISO 2528, GB / T 16928, ASTM E96, ASTM D1653, TAPPI T464, DIN 53122-1, JIS Z0208, YBB 00092003.

4.3 Device parameters

Test range: 0.1 ~ 10,000 g / m2 · 24h

Number of samples: 1 ~ 3 pieces (data is independent)

Resolution: 0.001 g

Test temperature range: 15 ℃ ~ 55 ℃, temperature control accuracy ± 0.1 ℃

Test humidity range: 10% RH ~ 98% RH (standard 90% RH), temperature control accuracy ± 1% RH

Support LystemTM laboratory data sharing system, unified management of test results and test reports

5. Test process

(1) Using a sampler, cut out three samples with a diameter of 74 mm from the sample for testing.

(2) The sample is clamped in a moisture-permeable cup, sealed with a special wax solution and placed in the test chamber, and the chamber door is closed.

(3) Set the sample name, sample thickness, test temperature, test humidity and other parameters.

(4) Start the gas source and click the "Start Test" option.

(5) After the test, the instrument automatically calculates and displays the test results.

6. Test results

The water vapor transmission rates of the anti-static bubble bags tested in this paper are: 13.3329 g / (m2 · 24h), 13.0199g / (m2 · 24h), 13.4863 g / (m2 · 24h).

7. Conclusion

W3 / 030 water vapor transmission rate tester is a professional instrument for testing the water vapor transmission rate of packaging materials such as film, paper, sheet, etc. The equipment is simple to operate, has high test accuracy and good repeatability, and can accurately reflect Moisture resistance of electrostatic bubble bag. Labthink has always been committed to providing professional testing services and equipment for global customers. Over the years, it has provided tens of thousands of barrier testing services to global customers and provided reliable data support for customers. Labthink looks forward to enhancing technical exchanges and cooperation with enterprises and institutions in the industry.