1.The use of middle line in sanitary pads
Sanitary pads usually have lines in the middle, these lines are commonly known as the ' guide line' or the ' absorbent core guiding groove' and which have an imperative role in the design of sanitary pads. This line's primary purpose is to speed and allow the menstrual blood to continue flowing properly such that it's evenly distributed to the sanitary napkin's absorbent layer and consequently the sanitary napkin shall remain clean and dry during its use. Through this design, the sanitary napkin can absorb and lock the menstrual blood more effectively, reduce the risk of side leakage and back leakage, and thus provide a longer comfortable experience.
The middle line is also there to ensure that particular products retain good absorbency even when exposed to heavy blood volumes. It is referred to as a "highway" where menstrual blood is channeled to enter the inner part of the sanitary napkin rapidly without mechanisms of retention in the external surfaces which also reduces the feeling of wetness and discomfort.In addition, the design of the guiding line also helps to reduce the deformation of the sanitary napkin during use, maintain the stability and integrity of its structure, and further improve the use effect.
2. Design principles and technological innovation
The design principle of the middle line of the sanitary napkin is based on the comprehensive application of fluid dynamics and material science. Manufacturers design the optimal guiding line shape and position by accurately calculating the path and speed of menstrual blood flow to achieve the best menstrual blood guiding effect. At the same time, the guide line is usually made of materials with excellent guide properties, such as polymer absorbent resin or special fiber, which can quickly absorb and fix menstrual blood to prevent it from flowing back or spreading.
With the rise of technological progress,manufacturers of feminine hygiene products are actively changing the waveguide structure of sanitary napkins. For example, high-quality sanitary napkin products use three-dimensional waveguide technology to achieve multi-dimensional guidance of menstrual blood through a specially designed multi-layer matrix, further improving the efficiency and comfort of sanitary napkins.
3. Positive effect on women's health
The fact that there is a middle line in sanitary napkins not only improves the use of the product, but also has a positive effect on women's health. To begin with, it helps to get women to experience less of the discomforts of menstruation such as dampness, itchiness and especially bad odors, in a way allowing even such women to have ease and confidence when they have their menses. Secondly, due to the middle line's ability to minimize side and back leakage, it is possible for most women to sustain their standard of hygiene and limit the development of gynecological diseases. Furthermore, due to the advancement of sanitary napkins, some designs of middle line with antibacterial and anti-allergic functions have started to be made to ensure that women are properly protected.