A brief introduction to the basic quality requirements of lipstick tubes

Lipstick is the general term for all lip makeup. Lipstick includes lipstick, lip stick, lip gloss, lip glaze, etc., which can make lips rosy and shiny, moisturize and protect lips, increase facial beauty and correct lip contours. Tube packaging materials are difficult to control because of their complex structure and functions.

Lipstick tubes are composed of multiple components. Functional packaging composed of different materials is also divided into volatile and non-volatile (airtight/non-airtight) types, and most of the filling is done by machines. Automatic filling (pre-filling, post-filling, direct filling, etc.), including the loading of lipstick tubes, is very complicated, the combination of different parts, the tolerance control is not good, or the design is unreasonable, even if the way of lubricating oil is wrong, Will cause downtime or malfunction, these errors are fatal.

The bead screw is the core component of the lipstick tube, that is, the bead, the fork, the spiral, the bead screw and the lubricating oil constitute the core of the lipstick tube. It is a bit like a pump core, but it is more complicated than the pump core. Some manufacturers brag that they are free of lubricating oil beads. Fork screw design, but currently not widely used. The standardized drawing of the bead fork screw must be standardized, otherwise, the size will not be accurate. After assembly, there will be more complicated factors. The result can be expected. The injection molding material must pass the compatibility verification of the material body, otherwise compatibility problems will occur. If there is a problem with the screw up and down, it will be over, and the bead fork screw is the top priority. The base is generally made of heavy iron for the feeling of the hand. If there is a problem with the heavy iron glue, it is equivalent to adding a risk to the inside of the lipstick tube. Coupled with the vibration during transportation, the trouble of degumming inside will be great.