How to improve the strength of industrial grade PET plastic bags

In the modern packaging industry, PET plastic bags are favored for their excellent physical properties and wide range of applications. However, how to further enhance its strength and toughness has become an important research topic in the industry. Relying on its profound accumulation in materials science and engineering technology, Zhongya Electric has comprehensively optimized the material formula, production process and structural design of PET plastic bags, aiming to improve the overall performance of the product.

Innovation in material formulation
Material formula is the core element that determines the performance of PET plastic bags. Zhongya Electric has taken the following innovative measures in the formulation research of PET materials:
Increase in the molecular weight of polymers: By increasing the molecular weight of polymers in PET materials, the length of the molecular chain can be effectively extended and its degree of cross-linking can be enhanced. This structural improvement not only improves the strength of the material, but also significantly enhances the toughness, ensuring the reliability of the product during use.
Introduction of polar groups: The introduction of polar groups into PET materials enhances the interaction between molecules. This increased cohesion increases the overall strength of the material, allowing it to perform better when withstanding external stresses.
Addition of reinforcing agents: Composite materials are formed by adding high-performance reinforcing agents such as glass fiber and carbon fiber to PET materials. This composite material not only significantly improves strength and stiffness, but also optimizes the material's impact resistance, providing higher safety for the product.

Optimization of production processes
Improvements in production processes also play a vital role in the strength of PET plastic bags. Zhongya Electric has taken the following optimization measures during the production process:
Optimization of the molding process: By accurately adjusting parameters such as temperature, pressure and time during the molding process, Zhongya Electric effectively improved the density and crystallinity of PET plastic bags. This optimization not only increases the strength of the material, but also improves the overall appearance quality of the product.
Control of cooling rate: During the cooling process, reasonable control of the cooling rate can effectively avoid excessive stress within the material, thereby reducing the risk of cracks and deformation. This refined cooling management ensures the stability of PET plastic bags under high-load use.
Adjustment of mold temperature: Mold temperature has a direct impact on the strength and surface quality of PET plastic bags. By appropriately adjusting the mold temperature, Zhongya Electric optimizes the material's fluidity and crystallization process, further improving the strength of the final product.

Optimization of structural design
Structural design also plays an important role in improving the strength of PET plastic bags. Zhongya Electric has significantly enhanced the product's load-bearing capacity and impact resistance through scientific structural design:
Increase in wall thickness: While ensuring that the size of the PET plastic bag remains unchanged, moderately increasing the wall thickness can effectively improve the strength and stiffness of the material. This design optimization makes the product more stable when bearing heavy objects.
Setting of reinforcement ribs: Setting reinforcement ribs at key parts of PET plastic bags can significantly enhance its load-bearing capacity and improve its impact resistance. This design strategy effectively reduces the risk of breakage during transportation and use.
Optimization of sealing design: By using advanced sealing technologies such as heat sealing and ultrasonic sealing, the sealing design is optimized and the sealing firmness and strength are improved. This improvement ensures the safety of the bag during transportation and use, reducing losses caused by seal failure.