Home » News » Company news » Accept the packaging materials of plastic bottles?(1)


Accept the packaging materials of plastic bottles?(1)

Views: 82     Author: Site Editor     Publish Time: 2021-11-12      Origin: Site Inquire

The airless plastic bottles of cosmetic packaging material manufacturers are generally classified according to their materials, and the common ones are PP, PE, PETG, PET, acrylic, ABS, AS, MS, PS, etc. PET, PP, ABS are more common.

airless bottle

1. See if it is hygienic

Generally, the internal and external surfaces are required to be clean, clean, and pollution-free, and foreign objects such as water stains, oil stains, insects, hair, peculiar smell and pungent smell are not allowed.

2. Look at the appearance

Generally, the eyes can directly see and judge, and different degrees can define different defect levels. You can also judge whether it is within our acceptable range according to the actual situation.

Generally look at whether the color is obviously inconsistent, whether there is obvious color difference in the same batch of colors, whether there are printing errors or printing ghosts, incorrect registration, whether there are foreign objects in the bottle, whether the bottle mouth is smooth and free of burrs, and whether the bottle body has stains and scratches Or unevenness, whether there are pits or pits in the electroplating type, whether the bronzing is peeled off or shifted, etc., generally do not affect the overall appearance.

3. Functional test

The functional test items of cosmetic packaging material manufacturers generally need some tools. Can be subdivided into the following items.

(1) Length and layout deviation: Length deviation refers to the outer size and the bottle aperture size. Generally, it is not necessary to have too much deviation in a batch. Position refers to the printing position and overprint hot silver printing position, etc., do not exceed too much, the ruler can be measured.

(2) Bottle cap gap: The deviation of bottle cap gap depends on personal acceptance. Normally, it should not be less than 0.2cm and not more than 1cm. Some companies require higher requirements not higher than 0.5cm, and the ruler can be measured.

(3) Matching: Generally, after matching with the outer box, there is no looseness, idling phenomenon, or the bottle is too short and the box is too high.

airless bottle

(4) Air tightness: It mainly depends on whether there is liquid leakage. General professional companies use a vacuum leak detector to test. If there is no condition, you can load the material and invert it for a few days to see if there is any leakage.

(5) Capacity: The capacity of airless plastic bottles provided by some suppliers is sometimes not what you want (although he said it is this capacity, the density of the material is different, and sometimes the milliliters are converted to grams. There may be a few grams of difference). At this time, you need to use the material to test it yourself. You can buy a test tube to test it.

(6) Adhesion: Generally, it depends on whether the product is long-lasting. You can use 3M tape to test it. Stick it on and tear it off to see if there is any word drop or paint drop. It does not affect normal reading.


Enter your email address to join our newsletter and keep up to date.


: No.418 Changyuan Road, Yangming Street, Yuyao City, Zhejiang Province, China
: +86 13857834571
: +86 13857834571