Lipstick tube is the most complex and difficult among all cosmetic packaging materials. First of all, we have to understand why there are so many requirements for lipstick tube. Lipstick tube is a functional package composed of multiple components and different materials. From the material body, volatile and non volatile. Most of the filling is automatic filling, the combination of different parts is very complex, even if the lubricating oil coating way is wrong, will cause shutdown or abnormal function.
Pearl fork screw is the core components of lipstick tube, that is, beads, forks, spiral, pearl fork screw and lubricating oil constitute the core of lipstick tube, a bit like the pump core, but more complex than the pump core, some manufacturers boast that lubricating oil free pearl fork screw design, but is not widely used.
The standard drawing of the pearl fork screw must be standardized. After assembly, there are more complex factors. The injection material must be verified by the compatibility of the material body, otherwise the compatibility problem will occur.
The base will also increase the iron in order to feel, and the problem of the heavy iron glue will increase the risk in the lipstick tube.
The main control indexes include hand feel index, filling machine requirements, transportation vibration requirements, air tightness, material compatibility, size matching, aluminum tolerance and color, productivity, and filling quantity to meet the declared value of the product.
Lipstick material body has soft and hard degree, too soft, the bead (CUP) is not deep enough to HOLD the material body, the customer put on lipstick will fall out of the material body. Material too hard to apply, volatile material. If the air tightness is not good, it is very easy to cause the material to dry, and the whole product will fail.
The common quality problems of lipstick tube include material problems, process problems and assembly problems. After delivery of the problem, in fact, 70% of the tragedy is destined to development.
Post time: Apr-20-2022