Huabing Technology Strict Tensile Test Ensures High Strength & Safety for Cold Chain Ice Bags

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2025-09-11 00:00:00

Unveiling the “Durability Code” of Ice Packs: Professional Tensile Strength Testing of Composite Films

In cold-chain logistics, ice packs serve as invisible guardians, silently preserving the freshness and biological activity of products such as perishable foods and pharmaceuticals. The core performance of an ice pack depends largely on the quality of its outer composite film. Today, we invite you into the laboratory of Huabing Technology to unveil the professional tensile-strength testing of our composite film and to showcase the rigor and reliability behind our technology.

The Material Code of Ice Pack Films: The Core Advantages of Composite Film Technology

Huabing Technology utilizes a composite film for the outer layer of its ice packs — a high-performance polymer material engineered for superior durability. This composite structure provides exceptional mechanical strength, effectively resisting friction and compression during transportation. It also demonstrates strong chemical stability, preventing unwanted reactions with the cooling agents inside the pack. In addition, its excellent barrier properties help prevent leakage, ensuring the safety and reliability of cold-chain logistics.

Huabing Technology’s Patented Side-Absorbing Ice Pack

For ice packs, the tensile strength of the outer film is one of the most critical performance indicators. Insufficient tensile strength may cause the film to tear during handling or stacking, compromising the cold-chain performance and potentially damaging the transported goods. Therefore, conducting rigorous tensile-strength testing on the composite film is a vital step in Huabing Technology’s commitment to ensuring consistent product quality.

Professional Testing Method: Precise Evaluation Under the QB/T 1871 Standard

To ensure the authority and accuracy of our testing results, Huabing Technology employs the QB/T 1871 testing method, a specialized standard for evaluating composite films and pouch packaging. Throughout the testing process, we adhere strictly to the standardized procedures, with every step reflecting our unwavering commitment to exceptional product quality.

Light Industry Standard of the People's Republic of China QB/T 1871

First, five long-strip specimens are prepared from both the longitudinal and transverse directions of the ice pack’s composite film, each measuring 150 mm in length and 15 mm in width. This sampling method ensures a comprehensive evaluation of the film’s mechanical properties in different orientations, minimizing potential deviations caused by the material’s anisotropy.

Sample Preparation

The prepared specimens are then mounted onto a texture analyzer in our laboratory. This high-precision mechanical testing instrument accurately measures various parameters of materials under applied force. During testing, the gauge length of each specimen is set to (100 ± 1) mm, and the tensile speed is controlled at (100 ± 10) mm/min. This speed not only complies with the requirements of the QB/T 1871 standard but also simulates the tensile conditions that ice packs may encounter during actual use.

Tensile Breaking Force Test Using a Texture Analyzer

During the test, the texture analyzer gradually applies tensile force to the specimen until it breaks. At the moment of rupture, the instrument records the maximum load applied, which represents the tensile breaking force. This measurement provides a clear understanding of the composite film’s tensile strength, ensuring that it meets the performance requirements needed for real-world applications.

Test Data

Professional Commitment: End-to-End Quality Control From Laboratory to Market

Huabing Technology integrates professional rigor into every stage of product development, manufacturing, and testing. The tensile-strength evaluation of our composite film is only one component of our comprehensive quality control process. We have also established a robust quality traceability system, conducting tensile-strength tests on every batch of ice pack film. Only materials that successfully pass these evaluations proceed to the next stage of production.

It is this unwavering commitment to professional excellence that has earned Huabing Technology wide recognition in the market. From the meticulous selection of materials to the rigorous execution of testing procedures, we safeguard the quality of every ice pack with utmost dedication, ensuring reliable protection throughout the cold-chain transportation process.