The PET-AIOx-T film coated with an alumina oxide layer can become the new star of corn packaging due to its high barrier properties.

PET-AIOx-T coated with alumina oxide film is a polyester-alumina oxide coating with a protective coating. This material has excellent barrier properties, good thermal stability, high strength, and stable chemical properties. Compared with other traditional high-barrier materials such as BOPET, BOPP, BOPA, polyvinylidene chloride (PVDC) coated films, biaxially oriented nylon (BOPA), polyvinyl alcohol (EVOH) co-extruded films, etc., the transparent coated alumina oxide packaging film is non-toxic, has no solvent residues, has superior barrier properties, good printing performance, and provides better transparency visibility and printing adaptability.

The barrier properties of packaging materials are of utmost importance for various reasons. Our company has introduced the most advanced water and oxygen permeation testing equipment MOCO in the packaging industry. The standard value of the test to the customer can meet the high requirements.

1. Water Vapor Transmission Rate (WVTR):
2. Oxygen Transmission Rate (OTR)
3. Preservation of Product Quality:
4. Shelf Life Extension:
5. Safety and Food Hygiene:
6. Product Stability:
7. Environmental Impact:

To assess the waterproof and gas permeability properties of packaging materials, the barrier properties can be evaluated through methods such as water vapor transmission rate (WVTR) and oxygen transmission rate (OTR) testing.

1. Water Vapor Transmission Rate (WVTR):

WVTR measures the amount of water vapor that passes through a material over a specific time period. The standard test method for WVTR is ASTM E96 or ISO 2528. In this method, the test material is placed as a barrier between a humid chamber filled with water and a dry, desiccated chamber. The rate of water vapor transmission is then determined by measuring the weight gain in the dry chamber over time.

2. Oxygen Transmission Rate (OTR):

OTR measures the rate at which oxygen permeates through a material. The standard test method for OTR is ASTM D3985 or ISO 15105-2. It involves exposing a sample of the packaging material to a stream of oxygen and measuring the decrease in oxygen concentration on the other side of the material using an oxygen sensor. The oxygen transmission rate is then calculated based on the sensor readings and the area of the sample.

These testing methods provide quantitative measurements of the barrier properties of packaging materials, allowing manufacturers to evaluate and compare different materials for their suitability in various applications.

3. Preservation of Product Quality: Barrier materials are essential for protecting the packaged contents from external factors such as moisture, oxygen, light, and contaminants. These elements can deteriorate the quality, taste, texture, and appearance of the packaged products, leading to spoilage, oxidation, and degradation.

4. Shelf Life Extension: Packaging materials with excellent barrier properties can extend the shelf life of perishable goods by creating a protective barrier against oxygen and moisture. By limiting the transfer of these factors, the growth of bacteria, mold, and other microorganisms can be inhibited, preserving the freshness and quality of the product for an extended period.

5. Safety and Food Hygiene: Barrier properties are critical for ensuring food safety and hygiene. Packaging materials that prevent the entry of foreign substances, bacteria, and odors help maintain the integrity and hygiene of the food. Additionally, barrier properties are necessary for packaging materials used in pharmaceutical and medical applications to maintain the efficacy of the products.

6. Product Stability: Certain products are sensitive to external factors, such as reactive chemicals, UV radiation, or temperature variations. Packaging materials with appropriate barrier properties can shield the contents from these factors, preventing degradation, chemical reactions, or physical changes.

7. Environmental Impact: Packaging materials with good barrier properties can significantly reduce the amount of packaging material required to protect the contents. By minimizing the need for excessive layers, the overall environmental impact, including material waste and energy consumption, can be reduced.

In summary, the barrier properties of packaging materials play a vital role in product preservation, safety, shelf-life extension, and environmental impact reduction. Choosing suitable barrier materials is crucial for ensuring the quality, integrity, and longevity of the packaged contents. relevant case studies, industry trends, and regulatory considerations will be cited to support the discussion on the benefits and applications of PET coated aluminum foil film in food and pharmaceutical packaging. It is hoped that this comprehensive overview will serve as a valuable resource for professionals and researchers in the food and pharmaceutical packaging industries. an overview of packaging materials specifically designed for the food and pharmaceutical industries, with a focus on one particular material - polyethylene terephthalate (PET) coated aluminum foil film. The properties and applications of this type of film, as well as its impact on product preservation, shelf life, and sustainability, will be explored in detail. The objective of this paper is to enhance understanding of the importance and relevance of using specialized packaging materials in the food and pharmaceutical sectors.

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