1, the meaning
Health food is a kind of food. Besides having the proper properties of food, it can also improve the function of human body, but it is not a substitute for medicines used to treat diseases. Most of the health foods are made from nutrients needed by the human body and are extracted from natural plants, vegetables, fruits, and dairy products. Some health food ingredients are easily oxidized or absorb moisture. Therefore, they are required to have excellent packaging. The ability to block outside oxygen and water vapor.
The packaging used for health foods is mainly high-barrier materials. Most of them are packaged in containers made of plastic or metal materials, which can protect the quality of the contents as well as aesthetic requirements. The health foods packaged in metal bottles are easily oxidized and have long shelf life requirements. Therefore, the barrier properties of metal bottles determine the quality of health foods and the length of their shelf life. How to evaluate the oxygen barrier property of the metal bottle to the outside world, you need to use a special container oxygen permeability test device to accurately test the bottle body, low oxygen permeability indicates that the metal bottle has high oxygen barrier. This article uses Labthink Languang independent research and development of the OX2/230 oxygen permeability test system to detect the oxygen permeability of the metal bottle, that is, the bottle's barrier to external oxygen, can provide technical reference for the relevant health food production industry.
Figure 1 Metal bottle for health food
2, reference standards
At present, there is no detection standard for oxygen permeability of containers in the country. This article is based on ASTM F1307-2002 (2007) “Standard Test Method for Determining the Oxygen Permeability of Solid Packages Using a Power Sensor”.
3, test sample
A brand nutrition liquid aluminum bottle.
4, test equipment
For container samples with a small oxygen permeability value, the test equipment is usually tested according to the principle of isobaric pressure specified in ASTM F1307. This paper uses the Lanthink blue light OX2/230 oxygen transmission test system for testing.
Figure 2 OX2/230 oxygen transmission rate test system
4.1 Equipment Principle
The OX2/230 Oxygen Permeability Test System uses the principle of isobaric testing. The pre-treated sample is clamped between test chambers. Oxygen or air flows on one side of the membrane. High purity nitrogen is on the other side of the membrane. Flowing, oxygen molecules diffuse through the membrane to the high purity nitrogen on the other side and are carried by the flowing nitrogen to the sensor. The oxygen concentration measured by the sensor is analyzed to calculate parameters such as oxygen permeability. For the packaging container, high-purity nitrogen flows in the container, and air or high-purity oxygen surrounds the container.
4.2 Application
l Containers: Suitable for testing the oxygen permeability of bottles, bags, cans, boxes, and barrels made of plastic, metal, rubber, paper, paper-plastic composite, glass, etc., such as Coke bottles, peanut oil barrels, Tetra Pak packaging. , vacuum packaging bags, metal three cans, plastic cosmetics packaging, toothpaste hoses, jelly cups, yogurt cups and so on.
l Films: Suitable for oxygen permeability test of various plastic film, plastic composite film, paper-plastic composite film, co-extruded film, aluminized film, aluminum foil, aluminum-plastic composite film and other film-like materials.
l Sheets: Suitable for oxygen permeability test of various engineering plastics, rubber, building materials and other sheet materials, such as PP sheet, PVC sheet, PVDC sheet and so on.
l can meet the standards: ASTM F1307, ISO 15105-2, GB/T 19789, ASTM D3985, ASTM F2622, ASTM F1927, JIS K7126-2, YBB00082003 and many other national and international standards.
4.3 Equipment Parameters
l The test range of the container sample is 0.0001 ~ 60 cm3/(pkg·d) with a resolution of 0.00001 cm3/(pkg·d); the test range of the film sample is 0.01 ~ 6500 cm3/(m2·d). With a resolution of 0.001 cm3/(m2·d).
l Can test 3 same or different samples at the same time, the system can support parallel connection of up to 10 instruments, and establish an efficient system for 30 samples at the same time.
l Test temperature control range 15 ~ 55 °C, temperature control accuracy of ± 0.1 °C.
l Test humidity control range 0%RH, 35%RH~90%RH, humidity control accuracy ±1%RH.
l Wide-range, high-precision temperature and humidity control range, both sides of the sample can be humidified, to achieve the test under different conditions of temperature and humidity.
l Pressure compensation technology ensures high accuracy and repeatability of test results.
l It can be used together with the water vapor transmission rate test system to form a hybrid test system, which is controlled by a single computer to achieve simultaneous testing of oxygen and water vapor transmission rates.
l Support LystemTM laboratory data sharing system, unified management of test results and test reports.
5, the test process
(1) Seal the edge of the aluminum bottle's mouth with a sealing and highly adhesive fast-adhesive on the container specimen sealing device. After the sealing is completed, clamp it into the instrument and seal it with a sealed bag. The bottle body sample and the sealing device are sealed and bandaged.
(2) Open the instrument control software, set test parameters such as test temperature, test humidity, etc., and click the test option to start the test.
(3) Adjust humidity and carrier gas flow.
(4) After the test is completed, record the instrument's automatically calculated test results.
6, test results
The aluminum bottle sample bottle tested herein has an oxygen transmission rate of 0.00148 cm3/(pkg·day).
7. Conclusion
Metal bottle bottle body is critical to the barrier properties of health foods, so we must strictly monitor the bottle's oxygen permeability and water vapor transmission rate, can effectively evaluate the bottle's oxygen, water vapor barrier properties. OX2/230 Oxygen Transmittance Test System has the advantages of high accuracy, good stability, and convenient operation in testing oxygen barrier properties of Metal Packaging for health foods. Labthink is a leader in packaging inspection and barrier detection equipment manufacturing industry, and it manufactures barrier testing instruments in many countries and regions at home and abroad. Its market share in domestic testing industry is far higher than other brands, and it is committed to global customers. Provide professional, high-end packaging other performance testing equipment and intimate, efficient packaging testing services. Understand the relevant packaging testing equipment and services, you can login to view product specific information or to consult. Jinan Languang Electromechanical Technology Co., Ltd. looks forward to enhancing technical exchanges and cooperation with enterprises and institutions in the industry.
