Anti-theft plastic cosmetics packaging production cover how to test the seal performance

Plastic security cosmetics packaging production cap is now commonly used packaging form of cosmetics packaging production class, especially in the more widely applied in the field of beverage, according to its USES can be divided into gas beverage cosmetics packaging production cover ( Gas cap for short) And gas free drinks, cosmetics packaging production cover ( Do not contain gas cap for short) 。 General with polyolefin as main raw materials, process such as injection molding, extrusion molding. Plastic security cosmetics packaging production cover requirements to facilitate consumers to open, and to avoid leakage caused by the poor sealing performance problems. How to reasonably to control cosmetics packaging production cover sealing performance is the key of the production unit is online or offline testing.
a, standard test method to introduce the
the national standard GB/T 17876 - 1999 specifically for the plastic anti-theft cosmetics packaging production cover the detection problem of clear rules, such as cosmetics packaging production cover open torque force, thermal stability, resistance to drop performance, leakage and sealing performance, etc. The sealing performance and cosmetics packaging production cover open, tightening torque of the assessment is plastic security cosmetics packaging production cover sealed performance is an effective way to solve. According to different purposes of cosmetics packaging production cover, the cover not containing gas and gas measurement methods have different rules. Cover the cosmetics packaging production must be cover not containing gas cut to guard against theft ring ( A) For not less than 1. Seal the rated torque of 2 nm, tester with seal testing, pressure to 200 kpa, stay under water pressure for 1 minute, observe whether the leak or tripping; Gas cap is pressurized to 690 kpa, stay under water pressure for 1 minute, observe whether the leak, then increased to 1207 kpa pressure, pressure maintenance for 1 minute, observe whether cosmetics packaging production cover is tripping.

2, detection application based on Labthink lincom of 'LSSD - 01 leakage and sealing strength tester 'as an example. The instrument could be used for a variety of professional screw diameter for 28 mm and 38 mm standard plastic security cosmetics packaging production cover ( Gas and gas free cover cover) Leakage and sealing performance of quantitative measurement, and at the same time can also be used for cosmetics packaging production cap torsion sealing connection tripping strength index, cosmetics packaging production cover and sealing the cosmetics packaging production volume, pressure resistance, such as breaking resistance index to evaluate analysis. Are equipped with a special 'plastic anti-theft cosmetics packaging production cover sealing performance test rig', as shown. Will build with special plastic security cosmetics packaging production unit connection link encapsulation, placed in a transparent observation tank, set test pressure or leak quantity to start the test after test conditions, such as instruments and automated testing, pressure test and leakage test data can be directly on the LCD screen display. At the same time also can be observed through the transparent jar judging the situation of the bubble.

3 and summarizing plastic security cosmetics packaging production cover sealing performance is the main factors influencing the packaging leak and metamorphism, through the reasonable control of the sealing performance can ensure the performance of open, and can avoid the leak. The above is for plastic security cosmetics packaging production cap leakage and sealing performance testing are briefly introduced, want to be able to cover for the plastic security cosmetics packaging production unit of the production and use of quality control.
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