In the vaping industry, using cotton wicks as a storage link is an extremely mature and economical way. During the storage process using cotton wicks, the high remaining amount of atomized oil has become a pain point in the industry.
In the electronic atomization industry, large-capacity equipment (above 15ML) has an increasing market share, and this has stricter requirements for integrated cotton. Currently, conventional integrated cotton used in large-capacity equipment on the market has a residual oil content of more than 20%. According to the publicity laws and regulations of various countries, its large-capacity equipment cannot obtain obvious effects and publicity due to the excessive amount of oil remaining in the integrated cotton.
Why does oil easily accumulate on the outside? This is because the diffusion of e-liquid from the outside to the inside is not enough. Although the concentration of e-liquid on the outside is high, due to the distance from the central hole, there is an outer ring of e-liquid and the concentration decreases. The mesh core requires attenuation of the concentration of e-liquid, so it will have problems that affect the taste, such as being easy to burn the core or having a cottony smell.
Due to yarn interlacing during the production process caused by yarn instability, the position of the remaining oil is variable and random.
Currently, the existing treatment methods on the market are mainly divided into two types: one is to use inner and outer layers (two or more layers), using products that are hard on the inside and fluffy on the outside; the other is to use an upper and lower connection design. Divide it into an upper part and a lower part. The upper part is fluffy to guide oil quickly, and the lower part is harder to lock oil.
However, the shortcomings of such designs are obvious: first, they require additional materials and are too expensive; second, the operation is cumbersome and complex, and labor costs are high; most importantly, there may be potential risks such as loose fit during the assembly process, resulting in The product is leaking oil.
Principle: The hardness of the cotton in the yellow part increases, thereby absorbing the liquid from the green cotton.
Disadvantages: Material costs and assembly costs increase significantly; there are potential risks such as loose coordination.
In contrast, the newly upgraded integrated cotton fundamentally solves this problem. Specifically, the design is a combination of multiple capillary sizes and multiple hardnesses. The closer to the central hole, the smaller the capillary size, and the further away from the central hole, the larger the capillary size. This design gradually reduces the capillary force from the core to the outside, which not only ensures the rapid transmission of atomized liquid, but also lays the foundation for reducing the amount of remaining oil. Different from other solutions, our one-piece cotton is formed in one piece, which perfectly reduces the amount of remaining oil, has a great price advantage, and does not have problems such as bonding lines or mismatches.
The above are the directions in which e-liquid needs to be diffused for products of different shapes.
The capillary size distribution of products with low oil residual rate gradually decreases from the outside to the inside. There are two forces that promote the e-liquid from the outside to the inside. One is the diffusion force of the e-liquid, which is basically constant. The other is the capillary force. This The size of the force is related to the capillary size difference, and the capillary size difference is related to the production process parameters.
The integrated cotton solution has the following advantages:
- Low oil remaining rate: Continuous pumping tests show that the oil remaining rate of 12 ml capacity products can be reduced to less than 5%, while that of 18 ml capacity products can be reduced to less than 10%.
- Strong adaptability: It can be designed according to the product structure and can match various shapes. The position of the hole core can be adjusted according to the needs of the structure, the adaptability is very high, and the structural design freedom is very wide.
- High stability: The full-process automated line production ensures that the oil conduction speed and remaining oil rate of each product are basically the same, thereby ensuring the stability of product quality and providing reliable protection for customers.
- Affordable price: The price of low-residue oil integrated cotton is basically the same as that of conventional integrated cotton. It will not add any financial burden to customers, and at the same time, it solves the pain points of large-capacity and high-remaining oil for customers.