GB/T 16928 is a Chinese national standard that focuses on the performance requirements and test methods of plastic packaging materials. This standard is widely used in packaging in the food, pharmaceutical, chemical and other industries to ensure the quality and safety of packaging materials and protect the packaged products.

The following is an interpretation of GB/T 16928:

1. Scope of application of the standard

GB/T 16928 applies to various types of plastic packaging materials, especially soft and hard plastic containers for liquid and solid product packaging. These materials are often used in the packaging of food, pharmaceuticals and other consumer goods.

2. Physical and mechanical performance requirements-electronic tensile testing machine

The standard specifies various physical properties of packaging materials, such as:

Tensile strength: evaluates the durability and ability of the material to withstand tension.

Elongation: tests the ductility of the material under pressure.

Tear resistance: ensures that the packaging will not break easily during transportation or use.

Impact resistance: the ability to resist external impact to ensure the safety of the product in the package.

Electronic tensile testing machine

3. Barrier performance

GB/T 16928 pays special attention to the barrier performance of packaging materials, which is crucial for food and drug packaging. The following are the main barrier performance indicators:

Water vapor transmission rate (water vapor transmission rate meter): prevent moisture from penetrating or escaping, and keep the humidity of the product in the package stable.

Water vapor transmission rate meter

Oxygen transmission rate (oxygen transmission rate meter): prevent oxygen from entering the package, avoid the impact of oxidation on the product, especially the preservation effect of food.

Oxygen transmission rate meter

4. Hygiene and safety requirements

In order to ensure that the material is harmless to the human body, the standard has very strict hygiene requirements for packaging materials and stipulates the safety test methods of the materials. These requirements include:

Heavy metal content: The heavy metal content in the packaging material must be controlled within a safe range to avoid contamination of food or drugs.

Residual solvent test: Solvents used in the production of packaging materials must not remain in the materials to avoid affecting the quality and safety of the products in the packaging - Gas Chromatograph

Gas Chromatograph

5. Environmental protection requirements

GB/T 16928 also involves environmental protection requirements for materials, encouraging the use of recyclable and degradable plastic materials to reduce negative impacts on the environment.

6. Test methods

The standard specifies the test methods for various properties in detail to ensure that manufacturers can test and certify materials in accordance with the standards. For example:

Tensile testing machine is used to test tensile strength and elongation;

Oxygen permeability meter is used to measure barrier properties.

7. Application of the standard

The standard provides a unified quality evaluation basis for manufacturers, testing agencies and users of plastic packaging materials. By testing the performance of materials, companies can ensure that their products meet the national quality standards, thereby improving the reliability and safety of packaging.

Summary

GB/T 16928 is a comprehensive standard that covers the performance, hygiene, safety and environmental protection requirements of plastic packaging materials, with particular emphasis on barrier properties and mechanical strength to ensure the high quality and safety of packaging materials.

If you need details of specific clauses or have other questions, you may need to view the full text of the standard or related technical documents. I can help you find relevant resources or further interpret certain clauses.