First, ensure that the materials used must be hygienic and non-toxic:

All materials should have a certain chemical stability, can not interact with the products they contain, light is not easy to change color and fade. New product development package materials are green and environmentally friendly materials, and are compatible with the material body for high and low temperature tests to ensure that the material body will not deteriorate, layer, color change and thin; .

Second, the inspection standards of different packaging materials:

Third, the basic elements of functional judgment:

For cosmetic plastic jar, the functional testing of packaging materials is also one of the necessary tests in production. It must be strictly checked, such as:

01. Comparison of cosmetic plastic packaging materials and samples:

Perform a detailed comparison check with the standard sample under direct sunlight.

02. Sealing test:

Take the bottle / tube matched with the plug, cap, pump head and spray head, fill the appropriate amount of water or product, tighten the cap plug, pump head and spray head, and observe the tightness. To prevent the package from deteriorating due to the product's poor sealing performance, the test method is as follows:

a. Inverted at normal temperature, placed in a horizontal position, and checked after 24h;

b. Invert at normal temperature, squeeze the bottle / tube with your fingers for one minute and check.

c. Test with a seal tester, under negative pressure, between 0.04MPa-0.06MPa, the test time is within one to five minutes.

03. the bottle mouth is complete

04. Fit and gap deviation with accessories:

For example, the bottle cap is loose, the pump head is tightened, the gap between the pump head and the bottle shoulder is too large, and the process must be within the approved value range.

05. Selection of special cosmetic plastic packaging materials and determination of sealing effect:

For example, oil-based packaging materials and liquid packaging materials are generally used with narrow-mouth bottles, and pump heads should be used. If the lid is equipped with an internal plug, a sealing aluminum film is added to increase the sealing and reduce the leakage of the material.

06. Allowable error of bottle weight:

Use a scale with a sense of 0.1 g to weigh out the weight of the sample and compare it with the approved value.

In addition--

In addition: barrier performance testing, tensile strength testing, heat seal strength testing, impact resistance testing, solvent residue testing, printing quality testing, etc. In short, as "matching angle" packaging and packaging materials, these seemingly cumbersome testing links , But is the key to ensuring the quality and safety of cosmetics.

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