Sanitary napkins are generally composed of three parts: the surface layer, the absorption layer and the bottom layer. The materials and functions of these three parts are mainly considered when selecting them.
(1) The surface layer should choose a dry mesh funnel type: the surface layer is dry and can protect the local skin from moisture; the funnel type design is better than the barrel design, and the infiltrated liquid is not easy to return.
Generally there are pure cotton and PE mesh materials.
(2) The middle layer should be breathable and contain a high-efficiency gel layer: sanitary napkins with a high-efficiency gel layer can condense the infiltrated liquid into a jelly-like shape, and will not seep back after pressure, and the surface is not sticky a feeling of.
The middle layer is made of pulp or silica gel
(3) The bottom layer is preferably made of breathable materials: it can allow gaseous water molecules to pass through smoothly, so as to achieve the effect of timely exhausting moisture, effectively reducing the role of sanitary napkins and the body to exhaust moisture, effectively reducing The dampness and sultry heat between the sanitary napkin and the body keep the feeling of dryness and freshness.
The main constituent materials of sanitary napkins
PE perforated film:
Commonly known as “dry mesh surface”, it is composed of a PE film with special micropores, which can prevent menstrual blood from re-infiltrating and keep the front side of the film dry.
Polymer composite paper:
High molecular polymer composite paper is mainly a high molecular polymer formed by the combination of cotton, non-woven fabric, and pulp, which is used to absorb menstrual blood flowing out.
Fluff pulp:
Wood pulp and straw pulp after bleaching and extraction of organic solvents.
Polymer absorber:
Sanitary napkins with high-efficiency gelling layer can condense the infiltrated liquid into a jelly-like shape, do not seep back after pressure, and have no sticky feeling on the surface. The commonly used material is polymer resin.
PE film:
The special polyethylene (PE) plastic film is used as the base material, a cross-linked acrylic resin is used as the adhesive, and then processed by several special additives, which is waterproof and breathable.
Hot melt glue:
Polyamide hot melt adhesives are based on polyamide resin. Polyamide resin is a linear thermoplastic resin with many repeating amide groups on the main chain of the molecule. Compared with other thermoplastic resins, it has a remarkable feature, that is, when it is heated and cooled, the melting and solidification of the resin occur within a narrow temperature range. This feature enables the polyamide hot melt adhesive to be quickly solidified when it is heated, melted, and coated after a little cooling; it can also make it have good bonding performance at a temperature close to the softening point. Because the hydrogen on the amide group of the polyamide resin can be combined with the electron-donating carbonyl group on the other amide group segment to form a strong hydrogen bond, the melting point of the resin is increased, so it has good flexibility, oil resistance and Bonding performance.
Release paper:
Release paper is also commonly known as silicone oil paper, or release paper. There are three layers of structure, the first layer is bottom paper, the second layer is laminating, and the third layer is silicone oil. effect:
(1) Glassine (bottom paper is Glassine) silicone oil paper
High temperature resistance, moisture-proof, oil-proof, generally used for packaging in the food industry
(2) Ordinary release paper:
Moisture-proof, oil-proof, play a role in product isolation
Various parts and performance of sanitary napkins
Wings:
The product that the sanitary napkin has evolved gradually during the development process, two wings-like extensions emerge from both sides of the sanitary napkin body, which can play the role of fixing the sanitary napkin and help prevent the side leakage of menstrual blood.
Fan-shaped tail:
The fan-shaped structure derived from the end of the sanitary napkin to both sides can effectively prevent back leakage.
Breathability:
It can make the gaseous water molecules pass smoothly, so as to achieve the effect of timely exhausting moisture, effectively reducing the effect of the sanitary napkin and the body, effectively reducing the humidity and sultry between the sanitary napkin and the body, and keeping it dry and fresh. Feel.
Personal:
The arc design makes the sanitary napkin close to the body and feels more secure. Anti-side leakage ability:
When the two sides of the crotch are compressed and the sanitary napkin is compressed to half of its original size, there is still no side leakage on both sides of the sanitary napkin; any concave anti-folding pressure line can prevent the sanitary napkin from wrinkling and reduce the chance of side leakage.
Special structure of some sanitary napkins
KMS refreshing factor: KMS health formula is a health formula developed by Zhongshan Medical Center and Jingxing Business Development Co., Ltd. which contains menthol, houttuynia cordata, Ximitai and other Chinese and Western medicine ingredients. It has anti-inflammatory, detoxifying, and heat-clearing effects, so it adds a fresh durian scent. It is refreshing and refreshing when used. Cool and comfortable feeling. It can also neutralize the peculiar smell of menstrual blood during menstruation. This kind of coolness is different from the coldness that needs to be avoided during menstruation, so to a certain extent it inhibits the proliferation of bacteria and also improves the body’s resistance!
V-shaped choke bulge:
The back of the absorber is made of wonderful “V-shaped baffle bumps” and small cushion-like pliable elasticity, which gently fits the uneven curve of the center of the buttocks, and blocks the flow of menstrual blood in time.
Dynamic:
The natural three-dimensional elastic protective enclosure can effectively block the menstrual blood, and even if the amount is large, it will give you all-round peace of mind. The newly added quick-penetrating absorber in the center of the towel body strongly absorbs all menstrual blood within 1 second without re-seepage; with full elasticity, it fits closely with the body no matter how it moves, there is no gap, and there is no worry of leakage.
Shunjie:
The instant cleaning series has the first magical fast osmotic embossing and breakthrough penetration absorption layer, so that the absorption speed can reach twice the original, which can make the menstrual blood quickly pass through the surface layer and the absorption layer at the moment of contact with the skin and be quickly absorbed by the high-efficiency water-absorbing particles AGM molecules Absorbed and condensed into a gel-like tight lock, almost no re-seepage.
Sleeping type:
The newly improved “non-deformable absorber” in the center of the towel body is full of elasticity and can quickly return to its original shape after being compressed; there are also double grooves to support the entire absorbent body, and the towel body will not be deformed even if it is squeezed for a long time or repeatedly.
Breathable structure:
Large and deep openings are evenly distributed on the front, which exudes stuffiness. The back uses a super delicate breathable membrane to let out moisture.
Thin:
The ultra-thin design of the towel body is more breathable and can give people a relaxed feeling.
Three-dimensional protective enclosure:
Like a wall, it generally stands on both sides of the towel body at a certain angle to help prevent menstrual fluid from flowing out of the side.
Anion:
The negative ion chip can release negative ions with an average concentration of 6000/cm3. The negative ions can promote the conversion of biochemical enzymes in the body and neutralize with odor gas molecules, so as to improve the body’s self-cleaning ability, remove odors, and effectively inhibit bacteria.
Silver ion:
Silver ions are absorbed through free movement and ventilation, feeling refreshing and moisturizing, removing peculiar smells, taking effect in 5 seconds, without disrupting physiological balance, and without any irritation. It adheres to the skin comfortably, forming a skin care, moisturizing, and nourishing care layer.
When silver ions come into contact with bacteria, they produce Coulomb attraction with the negatively charged active enzymes in the bacteria and strongly adsorb them, and interact with the active genes -SH and -NH in the enzyme protein, thereby destroying the activity of cell synthetase and preventing Cell metabolism interferes with the DNA synthesis of bacterial microorganisms, causing them to lose their ability to divide and reproduce and die.
Post time: Nov-12-2021