The physical protection role of Paper Plastic Bag Film in food packaging

1. Isolation and protection
Paper Plastic Bag Film builds a solid line of defense for food through its tight structure and barrier properties. Plastic films, especially multi-layer co-extruded films, can effectively block the invasion of oxygen, water vapor, odor and harmful microorganisms. Oxygen is one of the main factors causing oxidative deterioration of food, while the penetration of water vapor can cause food to become damp and moldy. The high barrier properties of plastic films significantly extend the shelf life of food and maintain the freshness and taste of food. At the same time, for foods that are easy to absorb odor, such as tea, coffee, etc., plastic film can also effectively prevent the penetration of external odors and maintain the original flavor of the food.

Although paper bags are slightly inferior to plastic films in terms of barrier properties, their unique fiber structure and good printing adaptability make paper bags also popular in food packaging that requires a certain degree of air permeability. For example, baked goods such as bread, biscuits, etc. need to maintain a certain humidity and air permeability during the packaging process to maintain their soft taste. At this point, paper bags become the ideal choice.

2. Buffering and shock absorption
During food transportation and storage, various physical shocks and vibrations are inevitably encountered. Paper Plastic Bag Film provides effective cushioning and shock absorption for food with its good flexibility and elasticity. As an important component of Paper Plastic Bag Film, plastic film has flexibility and ductility. This characteristic allows the plastic film to deform when subjected to external forces, thereby absorbing and dispersing impact energy and reducing direct impact on food. When food encounters bumps or vibrations during transportation, the plastic film can act like a soft protective layer, tightly wrapping the food to prevent it from being damaged by severe impact. Although paper bags are mainly made of paper, they can also have a certain degree of flexibility and elasticity after special processing. The fiber structure of the paper bag gives it a certain compression resistance and buffering effect, which can reduce the impact of external impact on food to a certain extent. In addition, paper bags can also enhance their cushioning properties by adding fillers such as bubble film and foam boards to provide more comprehensive protection for food.

3. Maintain shape and stability
Food packaging not only needs to protect food from the outside world, but also needs to maintain the shape and stability of the food. Paper Plastic Bag Film provides good support and fixation for food through its plasticity and stability. The plastic film can be custom-cut according to the shape of the food, tightly fitting the surface of the food and preventing the food from moving or deforming within the package. At the same time, the transparency of plastic films also allows consumers to clearly see the appearance and status of food, increasing purchase confidence and satisfaction. Paper bags, through their stiff cardboard and reasonable structural design, provide a stable support platform for food, ensuring that food remains in its condition during display and sales.

4. Adaptability and flexibility
The physical protection role of Paper Plastic Bag Film in food packaging is also reflected in its adaptability and flexibility. As food types continue to increase and consumer demands become increasingly diverse, food packaging also requires continuous innovation and improvement. As a multifunctional packaging material, Paper Plastic Bag Film can be customized and designed according to different food characteristics and packaging needs. Whether you need vacuum packaging with high barrier properties or breathable packaging with good air permeability; whether you need gift packaging with exquisite printed patterns or portable packaging that is easy to carry; Paper Plastic Bag Film can provide solutions to meet your needs.