Pump head is one of the main container accessories in cosmetic packaging materials. Its main function is to absorb the content through the cooperation with plastic bottles, glass bottles, hoses and other containers for application. Therefore, the quality of pump head directly determines the consumers' experience of the product. This article mainly describes some basic quality requirements of pump head packaging materials.
I. Basic requirements for surface appearance
1. It is smooth and complete, even in thickness, without obvious skew, defect or incomplete parts
2. Dirt / foreign matters: do not wipe away foreign matters. Product contact area: can erase dirt and foreign matters. Non product contact area: can erase dirt and foreign matters
3. Variegation: no obvious color difference, variegated spots or lines.
4. The dust cover is well matched, not easy to fall off, without scratches and mottled spots.
5. Cape / burr: the Cape and burr do not affect the use function and appearance
II. Basic requirements for product and structure
1. G weight: no more than 3% deviation of g weight
2. Matching: flexible rotation, moderate tightness; no sliding teeth. The gap between nozzle and bottle neck is ≤ 1.5mm.
3. Suction pipe: suitable length, not easy to loosen.
4. Pump starting times: water and emulsion ≤ 5 times; cream ≤ 10 times.
5. Spray effect: the spray head shall be foggy, and the maximum range of the spray head and pressure head shall be more than 1m.
6. Weight: generally according to the contract
7. Size: the size agreed in the contract
8. Thickness: the thickness agreed in the contract
9. Printing / hot stamping adhesion: soaked in water for 0.5h, fumigated with ozone for 0.5h, and printed under UV irradiation for 1H without falling off. 3m-810 / 3m-600 peeling test, the peeling area is less than 10%. Alcohol swab test, inner material swab for 1h, no obvious falling off and discoloration
10. Plating / spraying adhesion: ① 3m-810 / 3m-600 100 grid test, the falling area is less than 10%. ② for alcohol wiping test, the inner material shall be wiped for 1H without obvious falling off and discoloration.
11. Cooperation: the cooperation shall be tight and smooth without looseness or slippage.