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Abstract: The permeability of carbon dioxide is one of the important performance indicators of plastic wrap materials
.
This paper uses the differential pressure method equipment VAC-VBS differential pressure method gas permeameter to test the carbon dioxide permeation capacity of the nano cling film.
Provide a reference for performance testing and research
.
Key words: carbon dioxide permeation rate, carbon dioxide permeation performance, differential pressure gas permeameter, nano cling film , Meat products, fresh milk, beer, cooked food and other food preservation film materials
.
Compared with ordinary fresh-keeping materials, nano-cladding films have obvious advantages in heat resistance, antibacterial properties, and corrosion resistance
.
According to the different characteristics of the packaged food, the plastic wrap should have suitable performance parameters
.
Among them, the gas permeability (barrier) performance is an important reference index to determine whether the nano cling film can have a good fresh-keeping effect on the packaged food.
For example, when packaging fresh fruits and vegetables, the cling film should have appropriate oxygen and carbon dioxide permeability.
Over performance to accommodate and limit the respiration of fruits and vegetables
.
In this paper, the carbon dioxide permeation capacity of the nano cling film was tested in a targeted manner
.
2.
Nano-preservation film of the test sample
.
3.
Test basis At present, the test method of carbon dioxide permeation mainly adopts the principle of differential pressure method, and the test process is based on the standard GB/T 1038-2000 "Test method for gas permeability of plastic films and sheets - differential pressure method"
.
4.
Test equipment This test uses a VAC-VBS differential pressure gas permeameter to test the nano cling film samples.
The equipment is independently developed and produced by Jinan Languang Electromechanical Technology Co.
,
Ltd.
4.
1 Test principle The principle of the differential pressure method is to maintain a certain pressure difference on both sides of the sample during the test
.
After the sample is clamped into the test chamber of the equipment, the test chamber is divided into two chambers, the upper chamber and the lower chamber.
The upper chamber is filled with a certain pressure of the test gas carbon dioxide, and the lower chamber is evacuated to form a low-pressure environment.
A certain pressure difference is formed on both sides
.
During the test, driven by the pressure difference, the carbon dioxide in the upper chamber slowly penetrates into the lower chamber from the upper chamber through the sample, causing the pressure in the lower chamber to increase.
According to this linear relationship, the carbon dioxide transmission rate of the sample can be calculated
.
4.
2 Scope of application (1) This equipment is suitable for gas permeability test of various films and sheets
.
Films include various plastic films, paper-plastic composite films, co-extruded films, aluminized films, aluminum foils, aluminum foil composite films and other film materials; sheets include various engineering plastics, rubber, building materials and other sheet materials, such as PP Sheet, PVC sheet, PVDC sheet
.
(2) The equipment can also be extended to the air permeability test of aerospace materials, paper and cardboard, paint film, glass fiber cloth, glass fiber paper, cosmetic hose sheets, various rubber sheets and other materials
.
(3) This equipment is suitable for the transmission rate test of various gases, such as oxygen, carbon dioxide, nitrogen, helium, air,
etc.
(4) This equipment meets many national and international standards, such as ISO15105-1, ISO2556, GB/T 1038, ASTM D1434, JIS K7126-1, YBB00082003
.
4.
3 The test range of equipment parameters is 0.
1 ~ 100,000 cm3/(m2·24h·0.
1MPa); the test of 3 samples can be completed at the same time, and the test result is the average value of the test results of the 3 samples; the temperature range of the sample is 15 ~ 55℃, temperature control accuracy is ±0.
1℃; standard film is provided for quick calibration to ensure the accuracy and versatility of test data; support LystemTM laboratory data sharing system, unified management of test results and test reports
.
5.
Test process (1) Three samples with a diameter of 97 mm were cut from the surface of the nano cling film sample to be tested
.
(2) Apply a layer of vacuum grease around the 3 test chambers of the equipment, place a piece of filter paper in the test area, respectively paste the 3 samples on the test chamber, press gently to remove the air bubbles between the test chamber and the sample , and then clamp it with a clamping device
.
(3) Connect the carbon dioxide gas source, set the sample name, test temperature, humidity, test mode, vacuuming time and other parameter information on the equipment control software, click the test option, turn on the vacuum pump, and the test starts
.
(4) The equipment automatically conducts the test according to the set parameters.
After the test, the test result is displayed
.
6.
Test results The carbon dioxide permeation rate of the nano cling film sample tested in this test is 3.
9046×104 cm3/(m2·24h·0.
1MPa)
.
7.
Conclusion The carbon dioxide permeation performance of nano cling film is an important factor affecting its fresh-keeping effect as the outer packaging of fresh fruits and vegetables.
To ensure good storage quality of fruits and vegetables
.
In this paper, the differential pressure method was used to test the carbon dioxide permeation of the nano cling film samples.
The test process is simple, the equipment is easy to operate, the degree of intelligence is high, the test results are accurate and reliable, and the test efficiency is high.
In addition to carbon dioxide, this principle equipment can also be used for Test of gas permeability of oxygen, nitrogen, air, sulfur hexafluoride, helium and other gases
.
Jinan Languang Electromechanical Technology Co.
, Ltd.
is a technology-based enterprise specializing in the research and development, production and packaging testing services of packaging testing equipment.
The existing equipment can almost test the comprehensive performance indicators of flexible plastic packaging materials.
Log in to Jinan Languang's website to view specific information or call for consultation
.
The more you understand and the more you trust, Labthink looks forward to enhancing technical communication and cooperation with enterprises and institutions in the industry!
.
This paper uses the differential pressure method equipment VAC-VBS differential pressure method gas permeameter to test the carbon dioxide permeation capacity of the nano cling film.
Provide a reference for performance testing and research
.
Key words: carbon dioxide permeation rate, carbon dioxide permeation performance, differential pressure gas permeameter, nano cling film , Meat products, fresh milk, beer, cooked food and other food preservation film materials
.
Compared with ordinary fresh-keeping materials, nano-cladding films have obvious advantages in heat resistance, antibacterial properties, and corrosion resistance
.
According to the different characteristics of the packaged food, the plastic wrap should have suitable performance parameters
.
Among them, the gas permeability (barrier) performance is an important reference index to determine whether the nano cling film can have a good fresh-keeping effect on the packaged food.
For example, when packaging fresh fruits and vegetables, the cling film should have appropriate oxygen and carbon dioxide permeability.
Over performance to accommodate and limit the respiration of fruits and vegetables
.
In this paper, the carbon dioxide permeation capacity of the nano cling film was tested in a targeted manner
.
2.
Nano-preservation film of the test sample
.
3.
Test basis At present, the test method of carbon dioxide permeation mainly adopts the principle of differential pressure method, and the test process is based on the standard GB/T 1038-2000 "Test method for gas permeability of plastic films and sheets - differential pressure method"
.
4.
Test equipment This test uses a VAC-VBS differential pressure gas permeameter to test the nano cling film samples.
The equipment is independently developed and produced by Jinan Languang Electromechanical Technology Co.
,
Ltd.
4.
1 Test principle The principle of the differential pressure method is to maintain a certain pressure difference on both sides of the sample during the test
.
After the sample is clamped into the test chamber of the equipment, the test chamber is divided into two chambers, the upper chamber and the lower chamber.
The upper chamber is filled with a certain pressure of the test gas carbon dioxide, and the lower chamber is evacuated to form a low-pressure environment.
A certain pressure difference is formed on both sides
.
During the test, driven by the pressure difference, the carbon dioxide in the upper chamber slowly penetrates into the lower chamber from the upper chamber through the sample, causing the pressure in the lower chamber to increase.
According to this linear relationship, the carbon dioxide transmission rate of the sample can be calculated
.
4.
2 Scope of application (1) This equipment is suitable for gas permeability test of various films and sheets
.
Films include various plastic films, paper-plastic composite films, co-extruded films, aluminized films, aluminum foils, aluminum foil composite films and other film materials; sheets include various engineering plastics, rubber, building materials and other sheet materials, such as PP Sheet, PVC sheet, PVDC sheet
.
(2) The equipment can also be extended to the air permeability test of aerospace materials, paper and cardboard, paint film, glass fiber cloth, glass fiber paper, cosmetic hose sheets, various rubber sheets and other materials
.
(3) This equipment is suitable for the transmission rate test of various gases, such as oxygen, carbon dioxide, nitrogen, helium, air,
etc.
(4) This equipment meets many national and international standards, such as ISO15105-1, ISO2556, GB/T 1038, ASTM D1434, JIS K7126-1, YBB00082003
.
4.
3 The test range of equipment parameters is 0.
1 ~ 100,000 cm3/(m2·24h·0.
1MPa); the test of 3 samples can be completed at the same time, and the test result is the average value of the test results of the 3 samples; the temperature range of the sample is 15 ~ 55℃, temperature control accuracy is ±0.
1℃; standard film is provided for quick calibration to ensure the accuracy and versatility of test data; support LystemTM laboratory data sharing system, unified management of test results and test reports
.
5.
Test process (1) Three samples with a diameter of 97 mm were cut from the surface of the nano cling film sample to be tested
.
(2) Apply a layer of vacuum grease around the 3 test chambers of the equipment, place a piece of filter paper in the test area, respectively paste the 3 samples on the test chamber, press gently to remove the air bubbles between the test chamber and the sample , and then clamp it with a clamping device
.
(3) Connect the carbon dioxide gas source, set the sample name, test temperature, humidity, test mode, vacuuming time and other parameter information on the equipment control software, click the test option, turn on the vacuum pump, and the test starts
.
(4) The equipment automatically conducts the test according to the set parameters.
After the test, the test result is displayed
.
6.
Test results The carbon dioxide permeation rate of the nano cling film sample tested in this test is 3.
9046×104 cm3/(m2·24h·0.
1MPa)
.
7.
Conclusion The carbon dioxide permeation performance of nano cling film is an important factor affecting its fresh-keeping effect as the outer packaging of fresh fruits and vegetables.
To ensure good storage quality of fruits and vegetables
.
In this paper, the differential pressure method was used to test the carbon dioxide permeation of the nano cling film samples.
The test process is simple, the equipment is easy to operate, the degree of intelligence is high, the test results are accurate and reliable, and the test efficiency is high.
In addition to carbon dioxide, this principle equipment can also be used for Test of gas permeability of oxygen, nitrogen, air, sulfur hexafluoride, helium and other gases
.
Jinan Languang Electromechanical Technology Co.
, Ltd.
is a technology-based enterprise specializing in the research and development, production and packaging testing services of packaging testing equipment.
The existing equipment can almost test the comprehensive performance indicators of flexible plastic packaging materials.
Log in to Jinan Languang's website to view specific information or call for consultation
.
The more you understand and the more you trust, Labthink looks forward to enhancing technical communication and cooperation with enterprises and institutions in the industry!
