Among the cosmetic packaging materials, lipstick tubes […]
Among the cosmetic packaging materials, lipstick tubes are the most expensive and difficult ones. Why are lipstick tubes so expensive? To know why lipstick tubes are so expensive, we must analyze the reasons from the components and functions of lipstick tubes. First of all, a lipstick tube is composed of multiple components of different materials (plastic shell, bead fork screw, aluminum tube, heavy iron, magnet, etc.). Quality indicators and other aspects to analyze the reasons why lipstick tube cosmetic packaging materials are expensive.
First, the main functional parts of the lipstick tube
1. Ball fork screw
The bead fork screw is the core component of the lipstick tube, that is, the bead, fork, screw, bead fork screw and lubricating oil constitute the core of the lipstick tube. It is a bit like the pump core, but it is more complicated than the pump core, and some manufacturers boast that it is free of lubricating oil beads. Fork screw design, but currently not widely used.
The bead fork screw is the top priority. It must be in accordance with the standardized drawing specifications. The injection molding material must pass the material compatibility verification, otherwise compatibility problems will occur, and it is easy to cause problems when screwing on and off.
2. Magnets
Lipstick tube switches are generally divided into two styles: magnetic suction and buckle. Many customers will choose magnetic suction in pursuit of texture. Pay attention to the position of the magnet to ensure that the suction force of the magnet is just right.
3. Heavy iron
Generally speaking, the base will increase the weight of iron for the sake of feel. If there is a problem with the heavy iron glue, it means adding a risk to the inside of the lipstick tube. In addition, the vibration during transportation will cause great trouble for degumming inside.
Secondly, Development and design of lipstick tube
Before making a product, you must know "why you do it" before you can design various test methods and standardize various indicators. Novices must choose a mature bead fork screw design and complete the general bead fork screw design as soon as possible.
From the perspective of the lipstick body, it is also divided into volatile type and non-volatile type (airtight/non-airtight). If the airtightness is not good (the lid and the bottom are not well matched), it is very easy to cause the material to dry, and the whole product will fail. . In addition, when filling, most of them are automatically filled by machines (before filling, after filling, direct filling, etc.), we must pay attention to every detail such as the tolerance of the lipstick tube, the structure of the parts, and errors are irreversible.
Third, the quality control index of lipstick tube
The main control indicators include hand feel index, filling machine requirements, transportation vibration requirements, airtightness, material compatibility requirements, size compatibility problems, aluminum, medium-plastic tolerance and color problems, as well as production capacity and filling volume to meet Product claims, etc.