In the food industry, the selection of packaging bags is crucial. Seven layer co extruded film is a common packaging material that has excellent preservation and physical properties, ensuring the safety and quality of food. This article introduces how to choose a seven layer co extruded film suitable for food packaging bags to ensure packaging quality and sustainability.
Seven layer co extruded film is a composite film made from seven different materials through co extrusion process. Each layer of material has different functions, such as barrier performance, heat resistance, and impact resistance. Through reasonable design and selection, the seven layer co extruded film can meet the various requirements of food packaging.
When choosing a seven layer co extruded film, it is important to consider the type and characteristics of the packaged food. Different foods have different requirements for packaging materials. For example, foods that are prone to oxidation require co extruded films with good oxygen resistance, while foods with higher wettability require co extruded films with good moisture resistance. Therefore, it is crucial to choose the appropriate seven layer co extruded film based on the characteristics of the food.
Consider the usage conditions and environment of packaging bags. The seven layer co extruded film needs to maintain stable performance at different temperatures. For example, a co extruded film with good heat resistance is required at high temperatures, while a co extruded film with good cold resistance is required at low temperatures. Packaging bags also need to maintain stable physical properties in humid environments to prevent food from being affected by moisture.
The appearance and printing effect of packaging bags are also one of the factors to consider when choosing a seven layer co extruded film. The appearance and printing effect of food packaging bags directly affect the sales and brand image of products. Therefore, it is very important to choose a seven layer co extruded film with good transparency and printing adaptability.
Consider the sustainability of packaging bags. With the increasing awareness of environmental protection, choosing sustainable packaging materials has become increasingly important. The seven layer co extruded film can achieve sustainability by selecting biodegradable or recycled materials. Therefore, when selecting the seven layer co extruded film, the environmental performance of the packaging material should be considered to reduce the negative impact on the environment.
In summary, selecting a seven layer co extruded film suitable for food packaging bags is a complex and critical process. Multiple factors need to be considered, including food characteristics, usage conditions, appearance requirements, and sustainability. Only by comprehensively considering these factors can we choose a high-quality, safe and environmentally friendly seven layer co extruded film, providing a better solution for food packaging.