Catalogs >
Labthink Instruments Co., Ltd. >
Barrier Property Comparative Study of Different Aluminum Coated Films

Barrier Property Comparative Study of Different Aluminum Coated Films
4Pages

Catalog excerpts

Barrier Property Comparative Study of Different Aluminum Coated Films - 1

Barrier Property Comparative Study of Different Aluminum Coated Films Abstract: In order to verify whether the substrate material will affect the barrier properties of the aluminized film, we tested aluminized films made of PET and BOPP in similar thickness with a coulometric sensor method oxygen transmission rate testing instrument, C230G Oxygen Transmission Rate Test System. This article is to introduce the test principle, technical specifications, and application scope of the testing instrument as well as the detailed testing procedure. This may help in provide reference for the selection of aluminized films and study of the barrier property of aluminized films. Key Words: Aluminized Film, VMBOPP, VMPET, Oxygen Transmission Rate, Oxygen Barrier Property, Barrier Property, Oxygen Transmission Rate Test System, Coulometric Meter, Equal Pressure Method 1. Significance Since aluminum foil is a high-barrier material, packaging materials composed of aluminum foil have high barrier properties. However, this can drive up the cost significantly. In contrast, aluminum-coated film has a lower cost while maintaining effective barrier properties. It is widely used in industries like food, pharmaceutical, household chemicals, etc. Common aluminum-coated substrates include PET, BOPP, CPP, etc. After coated with vapor deposition of aluminum, aluminum-coated films such as VMPET, VMBOPP, and VMCPP are formed. The barrier properties of aluminized films may vary with different manufacturers, evaporation processes and even different batches. The differences are in thickness, density of the aluminized layer, and the COF between the aluminum layer and the substrate. This article introduces a study on whether the substrate of an aluminum-coated film will affect its barrier properties. 2. Test Sample The test uses two types of aluminum-coated films, VMPET and VMBOPP, in similar thickness as samples, compares their OTR. 3. Test Standard There are two common methods of OTR testing, i.e. differential pressure method and equal pressure method (aka. coulometric method). The tests are performed in

Open the catalog to page 1

Barrier Property Comparative Study of Different Aluminum Coated Films - 2

acco ordance wit ASTM D3985, Stan th D ndard Test Method for Oxygen Ga Transmis M as ssion Rate Through P e Plastic Film and Sheeti Using a Coulometric Sensor. m ing 4. T Testing Inst trument The testing ins e strument is C230G Ox xygen Trans smission Ra Test Sys ate stem develo oped and manufactur by Labt red think Instrum uments Co., Ltd. 4.1 Test Princip ple Cou ulometric m method is al known as equal pressure method. The p lso pre-conditio oned spec cimen is m mounted bet tween the u upper and lower test cell chamb mbers. Next, the , cham mbers are p purged with nitrogen a the same flow...

Open the catalog to page 2

Barrier Property Comparative Study of Different Aluminum Coated Films - 3

management of user data. It supports a variety of formats of exported data. Reliable security algorithms are used to prevent data leakage. It supports universal wired and wireless LAN, optional private wireless network, and supports third-party software. 4.3 Application Scope (1) The instrument is applicable to determination of OTR of various plastic films, paper plastic composite films, co-extruded films, aluminum coated films, aluminum plastic composite films, sheeting of PP, PVC, PVDC, metal sheet, rubber sheet, silicon wafer, wine bottles, coke bottles, peanut oil bucket, tetra pak,...

Open the catalog to page 3

Barrier Property Comparative Study of Different Aluminum Coated Films - 4

7. Conclusion The OTR test results showed that VMPET has better barrier properties than VMBOPP, which may have correlation with the better barrier properties of PET than BOPP substrate. The test process is simple and the testing instrument is easy to operate. The test results have reliable accuracy and repeatability. Labthink Instruments Co., Ltd is a technology company specializing in research & development of packaging testing instruments as well as packaging testing services. The new C series instruments include the infrared sensor method, coulometric sensor method, electrolytic sensor...

Open the catalog to page 4