The lid trough is the concave part of the lid that fits over the rim of the container and whose main function is to seal the contents of the container. The lid tray is a fundamental part of the hermetic seal of the containers, as its design and depth directly affect the stability and safety of the contents.
The depth of the lid trough is important, as it must be sufficient to fit snugly against the rim of the container to create an airtight seal. If the tray is too shallow, the seal will not be effective and the contents of the container may be exposed to contamination or lose its properties. On the other hand, if the tray is too deep, the closure may be difficult to open or may affect the stability of the container.
In summary, the lid trough is an essential part of the hermetic seal of the containers, and its design and depth are critical factors that must be carefully considered to ensure the safety and quality of the packaged contents.
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