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The Impact of Aluminized Layer Thickness on Moisture Resistance in VMBOPP Films

The Impact of Aluminized Layer Thickness on Moisture Resistance in VMBOPP Films

The Impact of Aluminized Layer Thickness on Moisture Resistance in VMBOPP Films

Product catalog summary
Introduction
Aluminum foil is known for its excellent moisture resistance but is costly and lacks flexibility. Aluminized films provide a more economical alternative by applying a thin aluminum coating on plastic films to achieve similar barrier properties.
Methodology
The study utilized the C330H water vapor transmission rate (WVTR) test system, which employs the electrolytic sensor method. This method measures permeability by quantifying the electrical current generated during water vapor electrolysis. The C330H system ensures accurate and reliable results with minimal human intervention due to its automated processes and stable temperature/humidity control.
Equipment
The Labthink C640 is a high precision mechanical contact thickness tester used for measuring the thickness of films, sheeting, and various other materials.
Results
Two VMBOPP films with different aluminized layer thicknesses (440 Å and 520 Å) were tested. The film with a 520 Å thickness exhibited a WVTR of 0.071 g/(m²·d), significantly lower than the 440 Å film's 0.463 g/(m²·d). This indicates a substantial improvement in moisture resistance with a slightly thicker coating.
Conclusion
The thickness of the aluminized layer plays a crucial role in the moisture barrier performance of VMBOPP films. Even a small increase in thickness can significantly enhance barrier properties. Labthink encourages collaboration with packaging industry companies for quality control improvements.
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Catalog excerpts

The Impact of Aluminized Layer Thickness on Moisture Resistance in VMBOPP Films-1

Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 The Impact of Aluminized Layer Thickness on Moisture Resistance in VMBOPP Films Aluminum foil offers excellent moisture resistance but is expensive and inflexible. Aluminized films, a cheaper alternative, use a thin aluminum coating on plastic film to achieve some barrier properties. The study measured water vapor transmission rate (WVTR) using a C330H water vapor transmission rate test system based on the electrolytic sensor method. This method uses the electrical current generated by water vapor electrolysis to quantify permeability. The C330H system offered accurate and reliable results with minimal human influence due to its automation and stable temperature/humidity control.

 Open the catalog to page 1
The Impact of Aluminized Layer Thickness on Moisture Resistance in VMBOPP Films-2

Test Range Resolution Repeatability Test Temperature Test Humidity Additional Functions Parameter g/(m2-day) (Standard) g/(100in2-day) g/(pkg-day)(Package) g/(m2'day) g/(m2'day) °C RH Package Test (3L Max.) DataShield™ Note2 Computer System required by GMP CFR21 Parti 1

 Open the catalog to page 2
The Impact of Aluminized Layer Thickness on Moisture Resistance in VMBOPP Films-3

Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Labthink C640 is a high precision mechanical contact thickness tester, it can be used for thickness measurement of films, sheeting and many other materials.

 Open the catalog to page 3
The Impact of Aluminized Layer Thickness on Moisture Resistance in VMBOPP Films-4

Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Two VMBOPP films with different aluminized layer thicknesses (440 Å and 520 Å) were tested.The WVTR of the 520 Å film (0.071 g/(m²·d)) was significantly lower than that of the 440 Å film (0.463 g/(m²·d)), indicating a substantial improvement in moisture resistance with a slightly thicker coating. The thickness of the aluminized layer significantly affects the moisture barrier performance of VMBOPP films. A small increase in thickness can significantly enhance barrier properties. Labthink encourages collaboration with packaging...

 Open the catalog to page 4

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