The structure of the bead fork conch is shown in Figure 1 above, which is generally a double helix structure with a longer pitch and a larger distance traveled by the bead after one rotation, and is therefore also called a fast conch. The bead (cup) is the part of the mouth cup that is in direct contact with the body of the lipstick meat material. Fork (fork) bead in a straight line direction of the travel track. Spiral (Spiral) beads in the spiral upward direction of the travel track, with the fork, to achieve the rotation process, the beads upward.

(2) According to the size, physical and chemical properties and filling method of the matching lipstick meat, the following is a classification of common lipstick tubes by beads:

The bead inner diameter mainly includes 8.5mm, 8.6mm, 9mm, 9.8mm, 10mm, 11mm, 11.8mm, 12mm and so on; the number of bead ribs mainly includes 4-ribbed, 6-ribbed and 8-ribbed; and the shape of bead includes positive filling and inverted filling.

(3) Classified according to the characteristics and functional needs of lipstick cream: multi-head lipstick, airtight lipstick, etc..

Multihead lipstick packaging, generally bead fork conch structure products, clever use of the lipstick body part of the extension into a double bottom interconnected structure.

Airtight lipstick is generally to meet the lasting lipstick products, the formula has a high volatile oil, mixed with a rich pigment, when the oil evaporates, the pigment stays on the lips. In order to meet the consumer in the shelf life of the normal use of the purpose, such lipstick tube, generally in the cap and in the bundle in the design of the embedded airtight ring, has reached the contents of the lock, to avoid the purpose of volatilization.

Lipstick tube structure components are complex, product details require a lot; plus filling most of the machine is automatic filling, filling process is different, such as: before filling, after filling, direct filling, lipstick tube Loading, etc.; coupled with such as the combination of different parts, tolerance control is not good, or the design of the irrationality, etc., even the lubricating oil coated with the way to the error, will cause shutdowns or abnormal function, and these errors are often fatal. And these errors are often fatal. Therefore, lipstick tube packaging materials need to be rigorously audited and carefully controlled in every aspect of the development, production, quality control and transportation process.

The common quality problems of lipstick packaging materials are such as: insufficient bead retaining force, too tight torque, too much or too little opening force, insufficient adhesion, contamination, etc. The reason for such problems may be due to the deviation of the production process management or the machine or tooling jig, mold/tuning is not in place, the standard is not clear, the staff operation error, etc., such as molding process size control is too poor, plating fixture is too tight with the product deformation, quality inspector measurement error to release the wrong information, etc. are common reasons that may cause defective products in the production process. For example, poor dimensional control during molding process, deformation of product due to over-tightening of plating fixture, release of incorrect information by quality inspector, etc. are common reasons that may cause defective products in the production process.