Tightness testing of plastic bottles:

(1) Fill the bottle with water of the same weight or volume as the net content of the product, put it in a vacuum box, and evacuate to -0.05MPa for 5 minutes. There should be no leakage.

(2) If none of the above vacuum tests pass, add water with the same weight or volume as the net content of the product to the side for 24 hours. There should be no water leakage. (This method is only for wide mouth bottles)

Drop test of plastic bottle: add water with the same weight or volume as the net content of the product, cover the cap, and hold it to the specified height: drop the bottle cap at a 45-degree angle, lay it freely, and drop it vertically down to the cement Three times each on the ground without cracks, leaks, or parts separation. Product logo net content> 200ml / g drop height is 1.2m; product logo net content ≤ 200ml / g drop height is 1.5m.

Heat and cold resistance test of plastic bottle:

(1) Heat resistance test: After adding water with the same weight or volume as the net content in the sample bottle, after placing it in the incubator (48 ± 1 ℃) for 24 hours, there is no cracking, deformation, discoloration, water leakage, etc.

(2) Cold resistance test: Add water with the same weight or volume as the net content in the sample bottle, and leave it in the refrigerator (-10 ° C to -15 ° C) for 24 hours without cracking, deformation, discoloration, water leakage, etc.

Barcode readability of plastic bottles: Barcodes can be read clearly and accurately with a barcode reader at one time. Judgment of pass or fail inspection batch by batch:

For the visual inspection items and functional inspection items, according to the results of the sample inspection, if the number of non-conforming products found in the sample is less than or equal to the number of qualified judgments, the batch is judged as a qualified batch. If the number of non-conforming products found in the sample is greater than Or equal to the number of unqualified judgments, the lot is judged to be unqualified.

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