A good quality bottle has undergone different types of testing and is considered as user-friendly and safe as primary packing. Physical properties are really a matter of concern for most of the manufacturers. 

Deformed bottles, broken bottles, leaked caps, etc. may lead to spoilage of the whole lot and may face straightway rejection from QC in-charge or from the retailer. That is why manufacturers use different package leak testers to determine the quality of a water bottle. Visit https://flexpakinc.com/test-methods/ to find more packaging testing methods.

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To cut down the rejection cost and failure cost, it is important to perform the test before starting the mass production of the bottles. 

Top Load Testing – During transportation or in warehouses, the bottles are stacked over each other. Due to stacking, bottles are being subjected to a constant compressive load.  This may result in buckling of the bottle from different points, like from the neck or from the bottom. 

To avoid such deformities, manufacturers must perform top-load testing by applying a compressive load on the bottle sample. If manufacturers understand the behaviour of their bottles, they can issue the guidelines to the carrier not to subject the load exceeding the defined limit. 

Torque Testing – Torque is the rotational force applied to the cap to open it. To make bottles user-friendly, it is important to have the right torque requirements. The user of a packaged water bottle could be a 10 years old child or a 65 years old lady. So, there is a huge variation in strength that can be applied. Having the appropriate torque not only makes the bottle user-friendly but also assures the leak resistance.