What are the main categories of food packaging testing based on material?

Packaging materials and products can be categorized into the following sections based on the type of material used:

1. Paper product packaging material testing: Paper-based packaging is one of the most commonly used packaging materials, and its testing typically includes printability, mechanical strength, weather resistance, and more. Evaluating these properties ensures that paper packaging maintains excellent stability and durability during transportation and use.
2. Plastic packaging material testing: Plastic packaging materials are widely used in everyday life, and their testing typically includes mechanical properties, barrier performance, weather resistance, optical properties, and antistatic performance. Evaluating these characteristics ensures that plastic packaging materials maintain excellent stability and functionality under a variety of environmental conditions.
3. Wooden packaging material testing: Wooden packaging materials are still widely used for certain products, and the key testing items include static bending strength, flexural strength, bonding strength, nail-holding capacity, moisture content, formaldehyde emission levels, and weather resistance. Testing these properties ensures that wooden packaging materials maintain excellent stability and safety during use.
4. Composite packaging material testing: Composite packaging materials are made by combining two or more materials, and their key testing parameters include barrier properties, mechanical performance, weather resistance, light-blocking capability, and antistatic performance. Evaluating these properties ensures that the composite packaging material maintains excellent stability and functionality during use.