The lipstick tube is the most complicated of all cosmetic packaging materials. The lipstick tube is composed of multiple components. The functional packaging composed of different materials is also divided into volatile type and non-volatile type (airtight/non-volatile). Air tightness), plus most of the filling is automatically filled by machines (front filling, post filling, direct filling, etc.), including the filling method of the lipstick tube, the combination of different parts, the tolerance control is not good, or the design is not good Reasonable, even if the lubricating oil is applied in the wrong way, it will cause downtime or abnormal function.
1. Production process
1. Basic materials
Lipstick tubes are divided into all-plastic lipstick tubes, aluminum-plastic composite tubes, etc. The commonly used plastic materials are PC, ABS, PMMA, ABS+SAN, SAN, PCTA, PP, etc., while aluminum models are commonly used 1070, 5657, etc. There are also users who use zinc alloy, sheepskin and other materials as lipstick tube accessories in order to show that the product temperament is consistent with its brand tonality.
2. Forming process
The plastic material of the lipstick tube is mainly based on the injection molding process, such as the cover, the base and the related accessories in the middle beam core.
3. Surface treatment
There are many treatments available on the surface of the lipstick tube. For plastic accessories, surface treatment processes such as spraying, electroplating, evaporation, laser engraving, and inserts can be used, while for aluminum products, oxidizable electroplating and anodizing processes are used.
4. Graphic printing
Both the lid and the base of the lipstick tube can be used to process graphic information according to user needs, using silk screen printing, bronzing/silver, pad printing, thermal transfer, water transfer and other processes.
2. Product structure
1. Product classification:
According to the components: cover, bottom, middle beam core (middle beam, bead, fork and spiral), etc. Among them, the middle beam is generally made of aluminum, which has better hardness and metal texture after anodizing, and plastic injection molding is also used. shaped.
Bead inner diameter: 8.5mm, 8.6mm, 9mm, 9.8mm, 10mm, 11mm, 11.8mm, 12mm, etc.;
Number of bead ribs: 4, 6, and 8 ribs, etc.
According to product structure: traditional lipstick shell box, slender type, lipstick/lip gloss box, lip balm, vermicelli, lip oil, etc.
Filling method: bottom pouring, top pouring
2. Cover
Lipstick tube covers are generally aluminum covers or acrylic covers, ABS covers, etc.
3. Base
The base is generally acrylic or ABS plastic, and some are also made of aluminum. In order to increase the feel, some suppliers also add more iron inside, but the problem with the heavy iron glue is equivalent to increasing a risk in the lipstick tube. In addition, the vibration during transportation will form a quality accident if it is degummed, allowing customers to experience Worse.
4. Middle beam core
The middle beam core is the core component of the lipstick tube, which is equivalent to the heart of the product. Whether the lipstick tube product has a good customer experience, the basic functions are in the experience of the middle beam core, which carries the torque of the entire lipstick tube product. , smoothness, blocking force, insurance force, bead bearing force and other functions.
The bead fork screw is generally a double helix structure with a long pitch, and the travel distance of the bead after one rotation is large, so some users also call it a quick screw. The bead fork screw is the core component of the lipstick tube, that is, the bead, fork, spiral, bead fork screw and lubricating oil constitute the core of the lipstick tube. ) The travel track of the bead in the linear direction, and the travel track of the spiral (Spiral) bead in the upward direction of the spiral, which cooperates with the fork to achieve the purpose of the rotation process and the upward movement of the bead.
The ball fork screw is a bit like the pump core, but it is more complicated than the pump core. Some manufacturers say that the lubricating oil-free ball fork screw is designed, but it is not widely used at present. The standardized drawing of the bead fork screw must be standardized, otherwise, you will not be able to grasp the size of your own. After the assembly later, there will be more complicated factors. The result can be expected that the injection molding material must pass the material compatibility verification, otherwise compatibility problems will occur. It is not good to have problems with screwing up and down, and the bead fork screw is the top priority.
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