Vacuum Metalized CPP film (VMCPP) is a high-performance film obtained by upgrading ordinary CPP through vacuum aluminization technology. It perfectly combines the excellent heat sealing property, flexibility of CPP, and the outstanding barrier properties (water resistance, oxygen resistance, light-blocking) of the aluminum layer with a beautiful appearance.
It is commonly used as a functional inner layer material in packaging structures. With its magnificent metallic appearance, excellent barrier properties, reliable heat sealing strength and relatively economical cost, it has occupied a stable position in the high-end flexible packaging market.
While providing comprehensive protection, it simplifies the packaging structure and reduces costs. It is one of the indispensable key materials in modern flexible packaging, especially for food, medicine and daily chemical product packaging that has high requirements for barrier properties.
The performance advantages of metalized CPP stem from its "plastic + metal" composite structure.
Extremely high water vapor barrier: far exceeding that of ordinary CPP and BOPP, it can effectively prevent the contents from getting damp or drying, significantly extending the shelf life.
Excellent oxygen barrier: filling the gap of ordinary CPP and BOPP in oxygen barrier, it can effectively prevent the contents from oxidizing and deteriorating (such as spoilage of snacks, loss of flavor).
Complete light-blocking and high UV-blocking ability: the aluminum layer can 100% block light, which is crucial for contents sensitive to light (such as oils, medicines, certain cosmetics).
It has a bright metallic luster, enhancing the packaging's grade and visual appeal, meeting the brand's demand for aesthetics.
It inherits the nature of the CPP substrate, having a low heat sealing and unsealing temperature and excellent heat sealing strength. This enables the aluminum-coated CPP to be directly used as the inner layer heat sealing material for packaging, resulting in good bag-making performance.
Compared to the structure of combining aluminum foil (such as BOPP/AL/PE), the amount of aluminum used is minimal, the cost is lower, and the film is softer.
Compared to aluminum foil, it is less likely to produce pinholes due to bending, and its barrier properties are more stable.
In the context of pursuing sustainable packaging, it provides a possibility for achieving a "fully PP" recyclable structure (such as: BOPP/VMCPP).
Product Name | VMCPP 35mic | ||||
Testing Item | Unit | Standards | Testing Data | Testing Method | |
Thickness | μm | ±5 | 35 | GB6672-2001 | |
Tensile Strength | MD | Mpa | ≥35 | 56 | GB/T1040.3-2006 |
TD | Mpa | ≥25 | 35 | ||
Aluminum Layer adhesion | N/15mm | ≥0.3 | 0.5 | BB/T 0030 | |
Heat Sealing Strength | N/15mm | ≥5.0 | 9 | 110℃, 0.4MPa, 2S | |
Optical Density | / | ≥1.9 | 2 | GB/T 15717 | |
Wetting Tension | mN/cm | ≥38 | 40 | GB/T 14216-2008 | |
C.O.F. | / | ≤0.8 | 0.71 | GB/T 10006 | |
O2TR | cm3/m2.d.0.1Mpa | ≤80 | 72 | GB/T 19789-2005 | |
WVTR | g/m2.d | ≤2.5 | 2.2 | GB/T 26253-2010 | |
