How to choose elastic bands with tensile strength and durability?

For bags that need to be opened and closed frequently and carry heavy objects, it is crucial to choose elastic bands with sufficient tensile strength and durability. Here are some specific selection suggestions:

1. Understand the basic characteristics of elastic bands
Tensile performance: The tensile strength of an elastic band refers to the maximum force it can withstand during the stretching process. For bags, elastic bands with higher tensile strength should be selected to ensure that they are not easy to break when carrying heavy objects.
Elastic recovery: Elastic recovery refers to the ability of an elastic band to return to its original length after stretching. Good elastic recovery ability can ensure that the elastic band can still maintain a tight fit after repeated use.

2. Consider material factors
Polyester fiber (PET): Elastic bands made of polyester fiber have high wear resistance, tear resistance and good elastic recovery ability. This material is suitable for making bags that need to be opened and closed frequently and carry heavy objects.
Polyamide fiber (nylon): Polyamide fiber is also a high-quality elastic band material with extremely high durability and toughness. It can withstand long-term stretching and extrusion without being easily deformed or damaged.
Rubber or polyurethane blends: Elastics made from these materials are usually more elastic and wear-resistant, but may not be as tear-resistant as polyester or polyamide. When choosing, you need to weigh their various properties.

3. Pay attention to production processes and quality standards
Weaving process: The weaving process of the elastic band affects its overall performance. High-quality weaving processes can ensure the uniformity and stability of the elastic band, thereby improving its durability.
Quality inspection: Choose elastic band products that have undergone strict quality inspections. Suppliers can be asked to provide relevant quality inspection reports or certification certificates to ensure that the quality of the product meets the standards.

4. Consider actual use needs
Weight-bearing capacity: Choose the appropriate elastic band according to the actual use needs of the luggage. If you need to carry heavier items, you should choose an elastic band with higher tensile strength and load-bearing capacity.
Opening and closing frequency: If the luggage needs to be opened and closed frequently, you should choose an elastic band with better wear resistance and elastic recovery ability to reduce wear and deformation.

5. Comprehensive evaluation and selection
When choosing elastic bands, you need to consider the above factors comprehensively and evaluate and select according to the specific usage scenarios and needs of the luggage. It is recommended to fully communicate with the supplier to understand the detailed performance and application scope of the product to ensure that the appropriate elastic band product is selected.