The sealing performance of the bottle cap is one of the measures of the suitability between the bottle cap and the bottle body. The sealing performance of the bottle cap directly affects the quality and storage time of the beverage. Only good sealing performance can guarantee integrity. and the barrier properties of the entire packaging. Especially for carbonated drinks, since the drink itself contains carbon dioxide, when shaken and bumped, the carbon dioxide escapes from the drink and the air pressure in the bottle increases. If the sealing performance of the bottle cap is poor, it is very easy for the beverage to overflow and the bottle cap will cause quality problems such as tripping.
When it comes to serving drinks or liquids, depending on their purpose, they can be divided into soft drink bottle caps and bottle caps. Generally speaking, polyolefin is the main raw material and is processed by injection molding, hot pressing, etc. That is, it should be convenient for consumers to open, and it is necessary to avoid leakage problems caused by poor sealing performance. How to properly control the sealing performance of bottle caps is the key to online or offline testing of production units.
When testing, the waterproofness has its own professional standards in my country. The national standard GB/T17861999 specifically stipulates the detection problems of bottle caps, such as cap opening torque, thermal stability, drop resistance, leakage and SE, etc. Evaluation of sealing performance, bottle cap opening and tightening torque is an effective way to solve the sealing performance of plastic anti-theft bottle caps. Depending on the use of the bottle cap, there are different regulations for the measurement of the gas cap and the gas cap.
Exclude the air cover and cut the anti-theft ring on the plastic bottle cap, which is used for sealing. The rated torque is not less than 1.2 nanometers. The tester adopts leak test with 200kPa pressure. Stay underwater. pressure for 1 minute to observe if there is an air leak or tripping; The cap is pressurized to 690 kPa, hold the pressure under water for 1 minute and observe for air leaks, then increase the pressure to 120.7 kPa and hold the pressure for 1 minute. minute and check if the cap is closed.
The sealing of plastic bottle caps is a major concern for manufacturers and food processors. If the seal fails to seal tightly, the cap will not work, which is especially important.
Post time: Oct-20-2023