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Do you know about adult diaper raw material?   Adult diapers are made from several raw materials, each contributing to the absorbency, comfort, and overall functionality of the product. Here's a breakdown of the main diaper raw material commonly used in the production of adult diaper:   1. Top Sheet (Nonwoven Fabric) Material: Typically made from polypropylene or a combination of polypropylene and polyethylene fibers.   2. Acquisition Layer (Optional in Some Diapers) Material: Often made from a nonwoven fabric or air-laid paper.   3. Absorbent Core The absorbent core is the key component that absorbs and holds urine. It consists of several materials: Fluff Pulp (Wood Pulp): Material: Primarily made from wood fibers (cellulose). Super Absorbent Polymer (SAP): Material: SAP is a polymer, often sodium polyacrylate. Other Fibers: Materials like polyester and polyethylene may also be added to increase the strength, flexibility, and leak resistance of the core.   4. Distribution Layer Material: Nonwoven fabric (similar to the top sheet) or sometimes a perforated film.   5. Back Sheet (Outer Layer) Material: Typically made from polyethylene film or breathable films. 6. Elastic Waistbands & Leg Cuffs Material: Spandex or polyurethane for elasticity, sometimes combined with nonwoven fabrics. 7. Adhesive Tapes/Straps Material: Typically hot-melt adhesives or hook-and-loop fasteners (like Velcro).   8. Perfumed or Skin Care Additives (Optional) Material: Aloe vera, Vitamin E, or antibacterial agents.   9. Other Materials (Optional) Antimicrobial Agents: Sometimes included to reduce the growth of bacteria and prevent odor. Breathable Film: Modern adult diapers often feature breathable films that allow moisture vapor to escape while still preventing leaks. Each of these materials plays a crucial role in making the adult diaper functional, comfortable, and effective for managing incontinence.  

1. First generation diaper core (cotton core): The first generation diaper absorbence core was formed by mixing fluff pulp with high molecular weight water absorbing molecules (SAP), without layering or partitioning, becoming a traditional core. The first generation core has good water absorption effect, but due to its relatively loose structure and lack of adhesive, it cannot fix the fluff pulp and SAP, so it is prone to clumping and fracturing during use. 2. Second generation diaper core (half core): The second generation absorbent polymers core is a partition made on the basis of the first generation core, and the thin composite core is covered with fluff and water absorbing molecules SAP underneath, which can play a certain role in fixing the fluff slurry and SAP, thereby reducing the occurrence of clumping. 3. Third generation diaper core (full core): The third generation super thin absorbent core adopts a composite core structure, consisting of dust-free paper, non-woven fabric, and SAP. The use of composite cores can make diapers thinner and less prone to clumping. The third generation core is made by bonding each layer of material with hot melt adhesive. The core contains a large amount of SAP to ensure the water absorption of the diaper. After absorbing water, it expands as a whole and is flat without clumping. The disadvantage of using composite cores is that the process is more complex, the equipment production speed is low, and compared to traditional cores, the cost will be higher.

Choosing the right sanitary napkins (or sanitary pads) depends on several factors, such as your flow, comfort preferences, and any sensitivity you may have. Here's a step-by-step guide to help you choose the best sanitary napkin for your needs:   1.Determine Your Flow Type Light Flow: If you have a light period, opt for light flow or panty liners. These are thinner and provide less absorption but are perfect for spotting or lighter days. Medium Flow: For regular days, choose a regular absorbency napkin. These are usually thicker than light flow pads and are designed for moderate bleeding. Heavy Flow: For heavy days, go for super or overnight pads. These are larger, often longer, and provide more absorbency to prevent leaks. Very Heavy Flow: If your flow is extremely heavy, consider ultra-absorbent pads or those with wings for extra leakage protection. 2. Consider the Length and Size Daytime: Regular-sized pads are sufficient for daytime use, but make sure the pad length and width fit comfortably to your body shape. Overnight/Heavy Flow: For nighttime or heavier flow days, choose longer pads for better coverage and protection against leaks, especially at night. Short or Long-Lasting Pads: Pads come in a variety of lengths, so you may prefer longer pads for better coverage or shorter ones for more discreetness.   3. Look for Extra Features Wings: Pads with wings can help keep the pad in place and prevent side leaks. They're ideal for heavier flows and more active lifestyles. Non-Winged: Some prefer non-winged pads for ease of use or because they feel more comfortable, especially in lighter flow situations. Ultra-Thin Pads: If you're looking for more comfort or discretion, ultra-thin pads offer a slim design while still being absorbent enough for a regular or heavy flow. Softness: Choose pads that are made of soft, breathable materials like cotton if you have sensitive skin or prefer a natural feel.   4. Material & Skin Sensitivity If you have sensitive skin, look for pads that are hypoallergenic and made from breathable materials like cotton or organic cotton. Some pads may have fragrances, but if you're sensitive to scents, it's better to choose fragrance-free pads. Biodegradable Pads: If you're environmentally conscious, there are eco-friendly pads made from organic cotton or biodegradable materials, which are a great sustainable option.   5. Absorbency & Thickness The absorbency level is crucial for comfort and leakage prevention. Choose a pad based on your typical menstrual flow: Regular pads are ideal for normal flow days. Super pads for heavy days or overnight use. Ultra pads for the heaviest flow or maximum protection. Thinner pads are generally more comfortable for lighter flows, but thicker pads provide more security for heavy flow or overnight. 6. Choose Between Disposable or Reusable Pads Disposable Pads are more commonly used, convenient, and available in a range of absorbency levels and materials. Reusable Pads are a sustainable alternative, made from fabric and designed to be washed after each use. They tend to be softer and better for the environment, but they require more maintenance.   7. Personal Comfort and Preference Breathability: Some pads have breathable covers, which prevent heat buildup and help with comfort, especially on hot days. Adhesive Quality: A strong adhesive on the back of the pad is crucial to ensure it stays in place throughout the day.   8. Try Different Brands Different brands may vary in how they feel and perform, so it can be worth trying different options to find the one that feels most comfortable and works best for your flow and lifestyle.   9. Look for Specialized Options (if needed) Postpartum Pads: If you're recovering from childbirth, postpartum pads are extra-large and highly absorbent. Maternity Pads: These pads are designed to handle heavier flow during the post-birth period. Menstrual Pads vs. Regular Pads: Menstrual pads are designed for menstruation, while incontinence pads are made for urine leakage. Make sure to choose the right type for your needs.

Hot air nonwoven fabric, belonging to a type of non-woven fabric, has become an indispensable material for diapers due to its high fluffiness, good elasticity, soft hand feel, strong warmth retention, and good breathability. It is generally used for the surface or bottom layer of diapers. 1.Application of bottom layer of diapers The function of the bottom layer of diapers is to prevent urine from seeping out, so the material used for the bottom layer not only needs to have the characteristics of anti-seepage, low fuzzing, and good strength, but also needs to have a fabric like soft touch and wear resistance. Due to its soft and fluffy characteristics, hydrophobic airthrough nonwoven can be used as a bottom layer for diapers when combined with PE film. Therefore, in recent years, many diaper products have switched to using hot air non-woven fabric as the bottom layer. Hot air non-woven fabric is made of ES short fibers and greatly reduces pilling by adding ironing rollers and other processes, becoming a new choice for diaper bottom layer materials. 2.Application of surface layer of diapers There are generally two types of surface materials: adhesive non-woven fabric and hot air non-woven fabric. Hydrophilic airthrough nonwoven is more suitable as a surface material for diapers due to its high fluffiness, good elasticity, soft hand feel, strong warmth retention, and excellent breathability and permeability. It can not only effectively penetrate water, but also prevent urine from refluxing, improving the comfort of babies.

The basic structure of sanitary napkins and pads includes the following parts: 1.Surface layer: The part that comes into direct contact with the skin, usually made of non woven fabric, perforated film mesh, or pure cotton material, with a penetrating and isolating effect. The recommended material for the surface layer is non-woven fabric or pure cotton, as they are soft, breathable, and not easily irritating to the skin. 2.Absorption layer: The main materials include fluff pulp, polymer absorbent resin (SAP), or pure cotton absorption layer. SAP has super strong water absorption ability, which can quickly lock in water and reduce backflow. It is recommended to use polymer absorbent resin as the material for the absorption layer, as it can effectively lock in moisture. 3.Bottom layer: usually composed of polyethylene leak proof film or breathable lamination PE film (PE film+non-woven fabric), which plays a role in preventing menstrual blood leakage, while maintaining breathability and avoiding stuffiness. 4.Adhesive backing: used to fix sanitary napkins on underwear. It is recommended to use food grade or medical grade hot melt adhesive, which is non-toxic, odorless, and non irritating to the skin. 4.PE pouch film: The outer packaging of a single sanitary napkin is usually made of materials such as PE film, composite non-woven fabric envelope, silicon coated film, or aluminum film. PE film has stretchable and waterproof properties, and the composite non-woven fabric coating is environmentally friendly and composed of non-woven fabric and PE film. The silicon coated film has the characteristic of not being easily damaged, while the aluminum film has a high-end appearance and is moisture-proof.

The breathable non woven fabric can enhance the breathability inside the diaper, allowing water vapor to circulate outside the diaper and promptly expel moisture and heat, effectively reducing the chance of urinary rash. It is soft, comfortable, and does not irritate the skin. The surface of adult sanitary napkins that is close to the skin is also made of non-woven fabric, but the non-woven fabric used for diapers must be softer and more suitable for the baby's skin than the one used for sanitary napkins. There are three types of base fabrics: woven, knitted, and non-woven. The nonwoven fabric materials refers to fibers that are oriented or randomly arranged, and is a new generation of environmentally friendly materials. It has the characteristics of moisture resistance, breathability, flexibility, lightweight, non combustible, easy to decompose, non-toxic and non irritating, rich colors, low price, and recyclability. If polypropylene (PP material) pellets are commonly used as raw materials, they are produced through a continuous one-step process of high-temperature melting, spinning, laying, and hot pressing. It is called cloth due to its appearance and certain properties. The characteristics of non woven fabric for diaper determine its use. Generally, the characteristics of non-woven fabric include wear resistance, softness, adhesiveness, water absorption, porosity, thermoplasticity, anti-static, smoothness, anti-static, breathability, disinfectability, ultra-thin, conductivity, high strength, breathability, dry cleaning, water resistance, printability, durability, hydrophilicity, mite resistance, elasticity, weldability, fire resistance/flame retardancy.   

Specifically, the role of ADL nonwoven fabric can be subdivided into the following points: 1. ADL guide layer can allow menstrual blood to flow along the length direction of sanitary pads, rather than spreading on the surface, thereby reducing the possibility of side leakage. 2. Through good flow guiding performance, the ADL flow guiding layer can accelerate the absorption rate of menstrual blood and reduce the residence time of menstrual blood on the surface. 3.The ADL nonwoven raw materials can effectively prevent menstrual blood reflux and reflux, keep the surface of sanitary napkins dry, and reduce discomfort. 4. By quickly absorbing and preventing backflow, the ADL flow guide layer can keep sanitary napkins dry and enhance user comfort. 5. Good flow conductivity helps prevent menstrual blood leakage, ensuring users' sense of safety and comfort during use.

The advantages of super absorbent polymer paper in diapers mainly include fast water absorption, large suction capacity, and good water retention. ‌ 1.Firstly, fast water absorption is one of the important advantages of SAP paper for diaper. The structure of diapers usually includes a top layer, a conductive layer, an absorbent layer, and a bottom layer. The absorbent polymer in the absorption layer (such as Sumitomo polymer) can quickly absorb urine, reduce the contact time between urine and baby's skin, and thus reduce discomfort. 2.Secondly, the large suction capacity is also one of the advantages of SAP white paper. Polymer materials with high water absorption, such as San Da Ya Polymer, can ensure that diapers remain dry for a long time, reduce the frequency of nighttime changes, and improve the quality of baby's sleep. 3.In addition, good water retention is also an important characteristic of absorbent paper. After absorbing water, it can keep the surface dry and reduce the phenomenon of back seepage, ensuring that the baby's skin remains dry and comfortable at all times.

The production process of spunbond nonwoven fabric for diapers involves several key steps, starting from raw materials (typically polypropylene) and ending with a fabric that is soft, durable, and highly absorbent. Below is a breakdown of the main stages involved in the spunbond process for diapers:   1. Raw Material Preparation Polypropylene Resin: The primary raw material for spunbond nonwoven fabric roll is polypropylene (PP) resin, which is a thermoplastic polymer. The resin typically comes in pellet form and is melted before being spun into fibers.   2. Extrusion Melt Extrusion: The polypropylene pellets are fed into an extruder, where they are heated to their melting point (around 220–250°C). The molten polypropylene is then forced through a spinneret—a device with multiple small holes that shape the melt into fine filaments or fibers. 3. Spinning Spunbond Process: The molten polypropylene is extruded through the spinneret to form continuous filaments. These filaments are cooled by air or water sprays as they exit the spinneret. Formation of Fibers: The cooling process solidifies the molten polymer into fine fibers. The filaments are stretched using air jets to increase their alignment and improve the mechanical properties of the fabric.   4. Fiber Orientation and Bonding Fiber Laydown: The filaments are deposited onto a moving conveyor belt, forming a web of randomly oriented fibers. This is usually done using an air-laying or carding technique, where air is used to scatter the fibers evenly on the belt. Bonding (Thermal or Mechanical): After the fiber web is formed, it undergoes bonding to enhance its strength and integrity. There are two main types of bonding used: Thermal Bonding: The fiber web is passed through heated rollers, which melt the fibers at certain points, creating a bond between them. This method provides a soft, flexible fabric. Needle Punching (Optional): In some cases, mechanical bonding is used, where needles punch through the fiber web to interlace the fibers, making them stronger and more compact. 5. Fabric Consolidation The bonded web is then consolidated, or compressed, to give it the desired thickness and density. This process is often followed by further thermal or mechanical treatments to ensure uniformity and stability in the fabric structure.   6. Finished Product Fabric Cutting and Winding: The consolidated nonwoven fabric is wound onto large rolls, which can be further processed to the desired size for diaper production. In all, that is the production process of spunbond nonwoven for diaper.  

Diaper spunbond nonwoven plays a crucial role in the structure and performance of disposable diapers. Spunbond nonwoven fabrics are produced by bonding fibers together through a mechanical process, and they are used in several layers of a diaper. The main applications of spunbond nonwoven fabric in diaper raw materials include:   1.Top Sheet nonwoven fabric The spunbond nonwoven fabric is often used as the top sheet (the layer that comes in contact with the baby's skin). Its main function is to provide a soft, smooth surface while allowing moisture to pass through to the absorbent core. This helps keep the baby’s skin dry and comfortable.   2. Back Sheet nonwoven fabric  PP spunbond nonwoven fabric is also used for the back sheet, the outer layer of the diaper that helps prevent leakage. It is typically combined with a waterproof film or coating for additional leak protection.   3. Leg Cuffs and Waistbands Spunbond nonwoven is sometimes used for leg cuffs or waistbands, which are key components for ensuring a snug and leak-proof fit around the baby's legs and waist. Benefits: The flexibility, softness, and stretchability of spunbond nonwoven fabric ensure a comfortable and secure fit, while also maintaining effective leak prevention. In essence, diaper spunbond nonwoven fabric is integral to the performance, comfort, and reliability of disposable diapers, contributing to their absorbency, fit, leak prevention, and overall hygiene.

The application of coated nonwoven on big waistband S cut side tape is mainly reflected in its waterproof, moisture-proof and corrosion-resistant properties, which make coated nonwoven an ideal choice for diaper materials. ‌ The application of S cut nonwoven in diapers is mainly reflected in the following aspects: ‌1. Waterproof performance‌: Coated nonwoven has excellent waterproof performance, which can effectively prevent urine from penetrating into the inside of diapers, keeping diapers dry and comfortable‌. ‌2. Moisture-proof performance‌: In a humid environment, S cut tape nonwoven can keep diapers dry, reduce bacterial growth, and improve the hygiene performance of diapers‌. ‌3. Corrosion resistance‌: Coated nonwoven can resist the chemical components in urine and extend the service life of diapers‌