How to ensure the leak-proof function of PET Sauce Cup Lid through material selection, design optimization and manufacturing process?

1. Importance of material selection
Polyethylene terephthalate (PET) has many excellent physical properties. PET material is light, easy to carry and transport, and very durable, and can withstand various pressures and impacts in daily use. More importantly, PET has good sealing performance. Its high density and low permeability enable the lid to fit tightly to the cup mouth, forming an effective sealing barrier.
The high density and low permeability of PET material are the key to its leak-proof function. The molecules inside the high-density material are tightly arranged, reducing the possibility of liquid penetration. Low permeability ensures that the sauce will not seep out through the tiny pores of the material. Using PET as the material of PET Sauce Cup Lid can minimize the risk of leakage and enhance the customer's experience.

2. Careful consideration of design
The design of PET Sauce Cup Lid has been carefully considered to ensure its leak-proof effect in actual use. The edge of the lid usually has a special sealing structure, such as a raised sealing ring or a tight threaded interface. These designs ensure that the lid fits tightly against the cup mouth, forming an effective sealing barrier to prevent the sauce from leaking during transportation and use. Leak-proof devices such as grooves or protrusions inside the lid enhance the sealing effect and ensure that the sauce does not spill.
Leak-proof devices such as grooves or protrusions inside the lid enhance the sealing effect when the lid is closed. These devices can generate additional pressure when the lid contacts the cup mouth, making the seal tighter. Through these design detail optimizations, the PET Sauce Cup Lid can maintain good sealing performance in various usage scenarios, ensuring that the sauce does not leak, and providing customers with a more convenient and hygienic use experience.

3. Precision of manufacturing process
The manufacturing process of the PET Sauce Cup Lid directly affects its leak-proof performance. During the production process, through high-precision molds and advanced injection molding technology, it can be ensured that the size and shape of each lid meet the design requirements and achieve a good sealing effect. High-precision molds can ensure the consistency of the lid size, while advanced injection molding technology can ensure the uniform distribution and tight fit of the material to improve the sealing performance.
Strict quality control and testing procedures are also an important part of ensuring the leak-proof function of PET Sauce Cup Lid. During the production process, each lid needs to undergo strict quality inspection to ensure that its size, shape and sealing performance meet the standards. Only PET Sauce Cup Lid that has undergone strict inspection can ensure the reliability of its leak-proof function. Through these quality control and testing procedures, the occurrence of unqualified products can be minimized and the overall quality of the product can be improved.