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Release paper is an indispensable part of the sanitary napkin raw materials. Its position in sanitary napkins is mainly located in the viscose part of its bottom layer. Specifically, depending on the structural design of the sanitary napkin, the release paper may cover the following key positions: Bottom center: The bottom center of the sanitary napkin is usually coated with viscose to fix it on the underwear. Release paper will cover this layer of viscose to prevent the viscose from losing its stickiness or sticking to other materials during packaging, transportation and storage. Wing release paper: Some sanitary napkins are designed with wings, which are also usually coated with viscose to better fix on the sides of the underwear. In this case, the release paper will also cover the viscose part of the wing to ensure that the viscosity of the viscose is not affected before use.   Tail part (if applicable): For some specially designed sanitary napkins, such as those with tails, the tail part may also be coated with viscose. Release paper will also cover the viscose part of the tail to protect its stickiness. In summary, the position of the release paper in the sanitary napkin is to cover the bottom adhesive part, including the bottom center, the wing part (if applicable), and the tail part (if applicable). These designs are all to ensure the stickiness and hygiene of the sanitary napkin before use, and at the same time make it easy for consumers to peel off the release paper and stick the sanitary napkin accurately on the underwear during use.

The spunlace nonwoven process is an advanced fiber processing technology that uses high-pressure water to spray the fiber web so that the fibers are entangled with each other to form a cloth. The entire process includes fiber web formation, pre-wetting, spunlace reinforcement, post-treatment, drying and shaping, curling and cutting. First, fibers such as polyester, viscose, and wood pulp are spread into a uniform fiber web through air or water flow. Then, a pre-wetting treatment is carried out to compact the fiber web and remove the air so that the fiber web can absorb the energy of the water jet more effectively. Then, the fiber web is fed into the spunlace machine, and the high-pressure water jet is sprayed onto the fiber web at a high speed, causing the fibers to displace, intersperse and entangle, forming flexible entanglement points and reinforcing the fiber web. There are three types of spunlace reinforcement methods: flat net, rotating hub, and a combination of the two, which can meet different production needs. The spunlace nonwoven process has the characteristics of environmental protection, high strength, softness, breathability, and adaptability. No chemical adhesives are used, and the environmental performance is excellent; the tightly entangled structure formed by high-pressure water flow gives it high strength and durability; good softness and skin-friendliness are suitable for close-fitting products; the tiny channels between fibers are conducive to air circulation and have good air permeability; it is suitable for a variety of fiber raw materials and can be customized according to customer needs. Spunlace nonwoven fabrics are widely used in medical and health, personal care, household goods and industrial fields. Such as medical supplies such as surgical gowns, masks, bandages, disposable sanitary products such as sanitary napkins and diapers, cleaning supplies such as rags and mops, as well as filter materials, insulation materials, packaging materials, etc. In short, the spunlace non-woven fabric process, with its unique characteristics and excellent performance, has brought convenience to people's lives and work in many fields.

Diapers are a must have item for modern babies. The core of diapers directly affects the product quality such as water absorption and breathability. At present, there are four main types of diaper cores: Wood pulp core (fluff pulp): It is a mixture of wood pulp and polymer water-absorbing resin, without stratification. Its advantage is that wood pulp fibers can effectively comb urine into the core, and polymer materials lock urine to keep the surface dry. However, the presence of wood pulp leads to easy lumps and fractures. Despite this, its excellent urine combing performance is still adopted by major international brands. The thinness is average, the water absorption and breathability are good, the softness is moderate, and the lumps and fractures are more obvious. Dual core (second-generation core): The structure is similar to sheet stacking, combining the super absorbent polymer  guide layer and the wood pulp layer, optimizing the water absorption and structural design. The wood pulp layer combs urine, and the polymer layer absorbs, with strong water absorption capacity and large water absorption. However, the stacking structure plus non-woven fabric is prone to soft lumps. The thinness is average, the water absorption is excellent, the air permeability is slightly weak, the softness is good, and the problem of lumping and faulting is moderate. Glue core (third generation core): It is mixed with hot melt adhesive, non-woven fabric and polymer absorbent resin, and is layered. The polymer ensures the absorption amount, and the glue bonding remains flat and does not clump. However, after absorbing water, the whole expands, the air permeability is poor, and it may cause discomfort to the baby. Insufficient technology may cause the glue to smell or harden, and the cost is high. The thinness is average, the water absorption is good, the air permeability is very poor, the softness is moderate, and the problem of lumping and faulting is less. Braided core: It is woven with breathable, flexible, and moisture-proof materials, filled with polymer absorbent primers, and has a special surface layer on the outside. The non-laminated structure is thin and not easy to clump and fault, and the diversion effect is good. But the cost is high. The thinness is excellent, the water absorption, air permeability, and softness are all good, and the problem of lumping and faulting is less. To sum up, various core structures have their own advantages and disadvantages, and parents can choose suitable products according to their baby's needs and budget.

The non woven full laminated PE film is mainly made of polyethylene (PE) material, which has good water resistance and breathability. It is mainly used to prevent urine leakage and keep the skin dry. Backsheet PE full laminating film is usually laminated of PE film or a lamination of PE film and non-woven fabric. The outermost layer is usually PE film, and the inner layer may contain non-woven fabric to increase comfort. The working principle of full lamination film back sheet is based on its material properties. PE film has good water resistance, which can effectively prevent urine from penetrating into the outside of diapers. At the same time, it has good breathability, which can help dissipate moisture and prevent babies from developing red buttocks. The breathability of PE film is achieved through its microporous structure, which allows water vapor to pass through but prevents liquid from passing through, thus achieving the function of breathability and impermeability.

The PE pouch film for sanitary napkin mainly plays a role in maintaining the sterile state of sanitary napkins, preventing bacterial invasion, and avoiding mosquito invasion. The PE pouching film is usually made of PE film material, which has stretchable and waterproof properties and is widely used in the personal care industry, such as women's sanitary napkins, pads, adult diapers and other products. In addition, the design and material selection of the female sanitary napkin pouching PE film are also very important. Modern sanitary napkins typically adopt a 360 degree fully wrapped design, with the outer film wrapping the entire sanitary napkin and adhering it to the outside of the breathable base film through a non fluorescent adhesive to improve the quality and comfort of the sanitary napkins. Different materials of coating also have their own characteristics. For example, PE packing film for sanitary napkin has stretchable and waterproof properties, while non-woven coating is more environmentally friendly, consisting of non-woven fabric and a very thin layer of PE film.

  The frontal tape loop of a diaper is one of the important parts of a diaper. It is usually used to fix the position of the diaper on the baby's body to ensure that the diaper is not easily displaced or loosened. The material and structural design of the front waist tape play a vital role in the comfort, fit and performance of diapers. According to different materials and surface treatments, the front waist tape can be divided into several types, each with different characteristics and advantages. The following are several common types of front waist tape: 1. PP diaper frontal tape Material characteristics: Polypropylene (PP) is a common synthetic plastic with high strength, rigidity and wear resistance, suitable for use in places where strong bonding is required. PP front waist tape usually uses non-woven fabric or film material, which is heat-pressed or bonded to form a solid waist tape. The surface is usually smooth, which is suitable for automatic bonding during the production process. Advantages: Strong adhesion: Polypropylene material can provide strong bonding to ensure that the front waist tape fits firmly on the baby's waist. Lower price: The cost of polypropylene material is low, which can reduce the production cost of diapers. Strong wear resistance: suitable for long-term use, not easy to break or fall off. Disadvantages: Since polypropylene itself does not have good softness, it is sometimes less comfortable and may cause friction to babies with sensitive skin. 2. Knitted frontal tape for diaper Material features: The mesh frontal tape usually uses a combination of polypropylene non-woven fabric and mesh material. The mesh structure makes the tape more breathable while maintaining adhesion. The mesh material itself is relatively thin, soft, and has less friction on the skin. Advantages: Better breathability: The mesh structure can increase air circulation, reduce stuffiness, and help babies stay dry. Soft and comfortable: The mesh material is softer, reduces friction on the skin, and improves comfort. High strength: The mesh structure can provide good resistance to stretching and deformation. Disadvantages: Compared with traditional flat materials, the production process is more complicated, so the cost may be slightly higher. 3. Brush frontal tape Material features: Suede frontal tape usually uses non-woven fabric with fluff on the surface (such as polypropylene non-woven fabric), which makes the surface of the frontal tape softer. Suede structure can enhance the comfort of the waist tape and reduce irritation to the baby's skin. Advantages: Very soft: Suede material is soft and suitable for baby's sensitive skin, which can provide higher comfort. Skin-friendly: Suede material can better fit the baby's waist curve and reduce the discomfort caused by friction. Good breathability: Although suede material looks thicker, its breathability is usually still good. Disadvantages: May be easy to pilling: Because the surface is suede material, after multiple stretching and friction, some pilling may occur, affecting the appearance. High cost: The production cost of suede material is relatively high, so the price of this type of diapers may be more expensive. 4. Nonwoven frontal tape Material features: Nonwoven frontal tape is generally made of polypropylene (PP) or other synthetic fibers, with a smooth surface, which can be processed by heat pressing or bonding. Nonwoven materials have good air permeability and softness, and the production process is simple and the cost is low. Advantages: Good air permeability: The structure of nonwoven fabrics is usually loose, which can provide a certain air permeability and help maintain dryness. Higher comfort: Compared with traditional plastic materials, nonwoven fabrics have certain advantages in softness and comfort. High cost performance: The production cost of nonwoven frontal tape is low, which can provide reasonable performance and low price. Disadvantages: Weak adhesion: Compared with PP frontal tape, the adhesion of nonwoven fabrics may be slightly insufficient, and a stronger adhesive may be required. Low durability: Compared with mesh or suede frontal tape, nonwoven fabrics may be less durable and strong after long-term use. Summary Each type of frontal tape material has its specific advantages and disadvantages. Manufacturers usually choose the right material based on product positioning, target market and cost requirements.  

The advantages and characteristics of air through 3D embossed nonwoven: 1.Soft and comfortable: Double convex punching technology makes non-woven fabric softer and more skin friendly. 2.Lightweight and breathable: The 3D perforated design provides better breathability and water permeability, keeping you dry and comfortable. 3.Uniform strength and toughness: Non woven fabric has high strength and toughness, and a longer service life. 4.Non toxic and antibacterial: The 3D perforated nonwoven material is safe and non-toxic, with antibacterial properties, suitable for use in products that come into direct contact with the skin. The hot air embossing nonwoven is widely applied in the following fields: Baby diapers: As a liquid absorbing surface layer, it provides a soft and dry experience, reducing the occurrence of red buttocks. Women's hygiene products: such as sanitary pads, dual-purpose pads for women and infants, etc., provide a comfortable user experience. Adult diapers: It is suitable for people who require long-term care, providing better breathability and comfort.

The production process of SMMS non woven fabrics mainly includes the following steps: 1.Production of spunbond layer and meltblown layer: Firstly, the spunbond layer and meltblown layer are produced separately through the spunbond method and meltblown method. The spunbond layer is composed of continuous filaments, which have good fracture strength and elongation; The melt blown layer is composed of continuous ultra fine fibers, which have good barrier effects on moisture, bacteria, dust, etc.   2.Online Composite: On the same production line, the first layer of fiber web is formed by spraying long fibers from the spunbond spinneret, then the second layer of fiber web is formed by the melt blown die, and finally the third layer of fiber web is formed by the spunbond spinneret. These three layers of fiber mesh are bonded by a hot rolling machine to form raw materials SMMS nonwoven.   3.Post processing: After the composite is completed, white SMMS nonwoven materials still need to undergo post-processing, including cutting, winding and other processes, to finally form the finished product.

ES fiber is one of the most ideal thermal bonding fibers for hot air through nonwoven fabric, mainly used for thermal bonding processing of non-woven fabrics. When the combed fiber network is thermally bonded by hot rolling or hot air penetration, low melting point components form melt adhesion at the intersections of the fibers.   After cooling, non intersection fibers still maintain their original state, which is a form of "point bonding" rather than "zone bonding". Therefore, airthrough nonwoven raw materials have characteristics such as fluffiness, softness, high strength, oil absorption, and blood sucking.   With the development of the market, raw materials of airthrough nonwoven products are widely used in the manufacturing of disposable products with their unique style, such as baby diapers, adult incontinence pads, and fabrics for women's hygiene products.  

The process characteristics of SSMMS non woven fabric for diaper mainly include its multi-layer structure design and production process.‌ 1.Leak guard SSMMS nonwoven fabric consists of four layers: spunbond layer, meltblown layer, spunbond layer, and spunbond layer (an additional spunbond layer is added to the SMS structure). This multi-layer structure design gives SSMMS meltblown non woven multiple superior properties: 2.Multi layer structure design: diaper SSMMS nonwoven raw materials are made by hot rolling four layers of fiber mesh, including two layers of spunbond layer and two layers of melt blown layer. This structure gives the product higher strength and better filtering performance. 3.Spunbond layer: composed of continuous filaments, it has good fracture strength and elongation, and can provide good physical strength and stability. 4.Meltblown layer: composed of ultrafine fibers, it has a good barrier effect on moisture, bacteria, dust, etc., with high water pressure resistance and good breathability. 5.Production process: diaper SSMMS soft non woven materials are formed by hot rolling multiple layers of fiber mesh. The production process is complex but can ensure the stability and high performance of the product. 6.Performance characteristics: SSMMS non woven fabric is non-toxic, environmentally friendly, insensitive, odorless, non irritating to the skin, free of other chemical components, and has stable performance; Through special treatment, anti-static, alcohol resistant, plasma resistant, water repellent, and water producing properties can be achieved.

The PE breathable film raw material is an environmentally friendly material. Breathable membrane is an environmentally friendly functional material that is breathable and waterproof against liquids, bacteria, and dust. It is mainly used in personal hygiene and care products, such as sanitary napkins and diapers. Breathable membranes are made by uniformly adding functional inorganic substances to polyolefin raw materials, which are stretched at high magnification to produce micropores, thus possessing breathability and moisture conductivity, as well as good water barrier performance. The environmental characteristics of breathable PE film for diaper are mainly reflected in the following aspects: 1.Environmentally friendly materials: Breathable membranes typically use PE (polyethylene) as a carrier, which is inherently environmentally friendly and does not produce harmful substances during the production process. 2.Functional environmental protection: The breathable diaper film materials can block water and breathe, helping to keep diapers dry and reduce bacterial growth, thereby reducing environmental pollution. 3.Widely used: The breathable polyethylene PE film is not only used in diapers, but also widely used in medical protective clothing, isolation clothing, medical mattresses, etc., demonstrating its wide application value and environmental potential.

The main functions of airlaid paper in sanitary napkins include serving as an absorbent core covering material and adsorbing menstrual blood secretions. Puffed paper, also known as dust-free paper or puffed paper, has the function of moisture absorption and drying, and can play an important role in absorbing and locking water in sanitary napkins. The airlaid paper sanitary napkin use paddles, old news paper, old book writing paper, and yellow core card waste paper as raw materials.  In sanitary napkins, airlaid napkins paper is usually used in combination with high polymer water absorbent resin (SAP). Ultra thin structured sanitary napkins use airlaid paper to wrap SAP polymer composite absorbent paper, while wood pulp structured sanitary napkins use toilet paper to wrap SAP polymer absorbent resin and wood pulp (fluff pulp). This combination enables sanitary napkins to better absorb and lock menstrual blood, keeping the surface dry.