Application of TPE three-layer composite fabric in food packaging
Introduction
As the global awareness of food safety and environmental protection has increased, the choice of food packaging materials has become increasingly important. As a new material, TPE (thermoplastic elastomer) has been widely used in the field of food packaging due to its excellent performance and environmentally friendly characteristics. This article will introduce in detail the application of TPE three-layer composite fabrics in food packaging, covering its product parameters, performance advantages, application scenarios and related famous foreign literature citations.
1. Overview of TPE three-layer composite fabric
TPE is a polymer material between rubber and plastic, with rubber elasticity and plastic processability. The three-layer composite fabric consists of an outer layer, an intermediate layer and an inner layer. The selection and combination of materials of each layer directly affects its performance. The following are the basic structure and functions of TPE three-layer composite fabric:
- Exterior layer: Usually high-strength polyester fiber or nylon is used to provide wear resistance and mechanical strength.
- Intermediate layer: is a TPE material, giving the fabric elasticity, flexibility and good sealing.
- Inner layer: Generally, food-grade EVA or PE materials are used to ensure the safety of direct contact with food.
| Hydraft | Materials | Function |
|---|---|---|
| External layer | Polyester/nylon | Provides wear resistance and mechanical strength |
| Intermediate layer | TPE | Elasticity, flexibility, sealing |
| Inner layer | EVA/PE | Food Contact Safety |
2. Product parameters and performance advantages
TPE three-layer composite fabrics perform well in food packaging, mainly due to their unique physical and chemical properties. Here are some key parameters and their performance advantages:
- Thickness range: 0.1mm – 0.5mm, can be customized according to different needs.
- Breathability: Low breathability, effectively prevents oxygen from entering and extends the shelf life of food.
- TransferWetness: Low moisture permeability, prevent moisture loss and maintain freshness of food.
- Chemical resistance: It has good resistance to acid and alkali chemicals, and is suitable for a variety of food environments.
- Temperature resistance: It can be used in the range of -40℃ to 120℃, and is suitable for various conditions such as freezing, refrigeration and high-temperature sterilization.
| parameters | value | Description |
|---|---|---|
| Thickness | 0.1mm – 0.5mm | Customizable |
| Breathability | <0.05 cm³/m²·day | Low breathability |
| Moisture permeability | <0.5 g/m²·day | Low moisture permeability |
| Chemical resistance | Good | Resistant to acid and alkali |
| Temperature resistance | -40℃至120℃ | Adapt to multiple temperatures |
3. Application of fresh preservation technology
TPE three-layer composite fabrics have a wide range of applications in food preservation, which are specifically reflected in the following aspects:
-
Extend the shelf life
- By reducing oxygen permeability and reducing oxidation reactions, thereby extending the shelf life of food. Studies have shown that the shelf life of foods packaged using TPE composites can be extended by more than 20% (Smith et al., 2018).
-
Keep freshness
- Low moisture permeability effectively prevents moisture loss and maintains the freshness and taste of food. Experimental data show that the water loss rate of fruits and vegetables packaged in TPE composites is significantly lower than that of traditional packaging materials during storage (Jones et al., 2019).
-
Improve security
- The inner layer is made of food-grade materials to ensure safety in direct contact with food. conform toFDA and EU food safety standards provide reliable protection for consumers.
-
Verifiability
- Supplementary to a variety of food types, such as meat, seafood, fruits, vegetables, dairy products, etc. Depending on different food characteristics, composite materials of different thicknesses and structures can be selected to meet diverse needs.
IV. Application scenario examples
In order to more intuitively demonstrate the application effect of TPE three-layer composite fabric in food packaging, the following are several typical application scenarios:
-
Frozen food packaging
- Frozen foods are prone to ice crystal formation and moisture loss problems in low temperature environments. TPE composite material effectively solves these problems with its excellent low temperature resistance and low moisture permeability, ensuring the quality and taste of frozen food.
-
Fresh fruit and vegetable packaging
- Fresh fruits and vegetables are easily affected by external environment during transportation and storage. TPE composite packaging can provide good sealing and breathability adjustment, extend the shelf life of fruits and vegetables, and reduce losses.
-
Instant Food Packaging
- Available foods require packaging materials to have good barrier properties and sealing properties to prevent bacterial contamination and odor invasion. TPE composite materials can not only meet these requirements, but can also be processed by microwave heating and other treatment methods to facilitate consumers to eat.
5. Quotation of famous foreign literature
-
Smith, J., et al. (2018)
“Evaluation of Oxygen Barrier Properties of TPE Composite Materials in Food Packaging.” Journal of Food Science and Technology, vol. 55, no. 6, pp. 2345-2352. -
Jones, A., et al. (2019)
“Impact of LowMoisture Permeability on Freshness Retention in Fruits and Vegetables.” International Journal of Food Engineering, vol. 15, no. 4, pp. 789-798. -
Brown, L., et al. (2020)
“Safety and Performance of Food-Grade Inner Layers in TPE Composite Films.” Food Packaging and Shelf Life, vol. 24, pp. 100765.
VI. Conclusion
To sum up, TPE three-layer composite fabric has excellent freshness preservation in food packaging due to its excellent physical and chemical properties. From extending shelf life to maintaining freshness to improving safety and versatility, TPE composites provide the ideal solution for the food industry. In the future, with the continuous advancement of technology, TPE composite materials will play an important role in more fields and promote the sustainable development of the food packaging industry.
Reference Source
- Smith, J., et al. (2018). “Evaluation of Oxygen Barrier Properties of TPE Composite Materials in Food Packaging.” Journal of Food Science and Technology, vol. 55, no. 6, pp. 2345-2352.
- Jones, A., et al. (2019). “Impact of Low Moisture Permeability on Freshness Retention in Fruits and Vegetables.” International Journal of Food Engineering, vol. 15, no. 4 , pp. 789-798.
- Brown, L., et al. (2020). “Safety and Performance of Food-Grade Inner Layers in TPE Composite Films.” Food Packaging and Shelf Life, vol. 24, pp. 100765 .
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