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3D perforated nonwoven is a type of non-woven fabric processed through special techniques, which has various advantages and application scenarios.  ‌The airthrough embossed nonwoven is formed by 3D embossing on the surface of non-woven fabric to create a multi-layered three-dimensional structure. This treatment increases the curved area of the non-woven fabric, thereby improving its breathability and infiltration speed. In addition, embossing hot air nonwoven usually use multiple hydrophilic non-woven fabrics, further enhancing their water absorption and diffusion properties, and reducing the phenomenon of reverse osmosis. 3D embossed non-woven fabric is widely used in various disposable hygiene products, such as sanitary napkins, diapers, training pants, and adult incontinence products. Its unique 3D structure allows liquid to quickly infiltrate, keeping the surface dry and improving the comfort and user experience of the product.

The principle of raw material breathable PE film in diapers is mainly based on the micro porous structure and the humidity gradient pressure difference formed by the difference in water vapor concentration. China diaper backsheet PE film is formed by combining inorganic substances with stretching process to form micro pores with appropriate size and uniform distribution. These micropores allow water vapor to pass through, but prevent liquid from penetrating, thus achieving the functions of breathability and water isolation. Specifically, the manufacturing process of dipaer breathable PE film back sheet involves adding inert fillers to polyethylene (PE) or polypropylene (PP) carriers, followed by film making and stretching processes to form thin films with microporous structures. These micropores allow water vapor to circulate between the two sides of the film, thereby regulating the humidity environment and achieving a breathable effect. In addition, the waterproof performance of breathable membranes depends on pore size and channel length, and is usually measured by water pressure resistance (Δ P). The role of China diaper backsheet PE film mainly includes preventing urine leakage and providing good breathability. The bottom layer of diapers is usually made of PE film or a combination of PE film and non-woven fabric. The use of breathable film allows diapers to remain dry while effectively preventing urine leakage. The breathability of the breathable film enables diapers to better regulate humidity and reduce discomfort for babies during use.

1. Airthrough nonwoven fabric is a non-woven fabric produced by using hot air from a drying device to penetrate the fiber web after short fibers are combed, allowing it to be heated and bonded together. Spunbond nonwoven fabric is a process of extruding and stretching polymers to form continuous filaments, which are then laid into a web. The web is then self bonded, thermally bonded, chemically bonded, or mechanically reinforced to transform into nonwoven fabric. Spunbond non-woven fabric is made of long fibers, but its raw material is plastic slices. 2. Hot air nonwoven topsheet has the characteristics of high fluffiness, good elasticity, soft hand feel, strong warmth retention, and good breathability and permeability. Spunbond non-woven fabric is made by directly spinning polymer particles into a mesh without using fibers, and then heating and pressing them with a rolling mill. It has excellent mechanical properties, such as tensile strength, elongation at break, tear strength, etc. It is very thin, but its softness and breathability are not as good as hot air non-woven fabric. 3. Diapers made from air through bonding nonwoven will feel softer and more comfortable to the touch; Pulling the surface of the diaper, the hot air non-woven fabric can easily pull out the threads. Diapers made from spunbond non-woven fabric are harder to touch and rougher compared to hot air non-woven fabric. Spunbond non-woven fabric is difficult to pull out fibers.

1. Different sealing performance The coverage area of partial lamination backsheet film is relatively small, usually only coating a part of the non-woven surface, so the sealing performance of the entire product is relatively poor. The full lamination film adopts a more comprehensive covering method, which can cover the entire surface of the non-woven fabric, thereby improving the sealing performance of the product.   2. Different breathability performance Due to the fact that center lamination backsheet film is only partially coated with a thin film on the surface, the overall breathability of the product is good, making it more suitable for producing products that require breathability. However, full lamination film back sheet has relatively poor breathability and is only suitable for producing products that require good sealing performance. 3. Different costs Due to the need to cover the entire surface of non-woven fabric with full film, its production cost is relatively high. However, center lamination backsheet film is relatively cheaper because only a portion of the surface needs to be coated. Therefore, when it is necessary to produce low-cost non-woven fabric products, semi film coating technology is generally used.

The coated PE film for baby diaper is a laminated material in which plastic particles are coated on the surface of the paper through a tape casting machine. The main characteristics of this material are oil and water resistance, and it can be heat sealed. Laminated PE backsheet coating film is composed of plastic particles and paper composite. Its main characteristics include: Oil proof: coating lamination film materials can effectively prevent grease from penetrating and keep diapers dry.Waterproof: It can prevent moisture infiltration to a certain extent and keep diapers dry. Modern laminating technology tends to use biodegradable materials such as polylactic acid (PLA), which reduces the environmental impact of disposable diapers after use. Heat sealable: It can be heat sealed under specific conditions, facilitating processing and assembly during the production process. Coated diapers have high physical strength and wear resistance, which can effectively protect the delicate skin of infants and extend the service life of diapers. In short, the application of laminating technology in diapers not only improves product performance and comfort, but also meets the requirements of environmental protection and sustainable development.

Spunbond nonwoven fabrics are widely used in the production of diapers, especially in the structure of their outer layer and moisture absorption layer. The process of producing spunbond nonwoven textiles mainly includes the following steps: 1. Polymer preparation (raw material selection) The raw materials of spunbond nonwoven fabrics are usually polypropylene (PP) or polyester (PET), which are widely used in nonwoven production due to their excellent mechanical properties, chemical stability and cost-effectiveness. Polypropylene is usually used in the production of diapers.   2. Melt Spinning In the melt spinning process, the polymer raw material is first heated to its melting point and becomes molten. The molten polymer is then extruded through a spinning nozzle through small holes to form long and thin fibers.   These fibers are not woven or knitted by traditional textile methods, but are directly formed from the ejected molten polymer filaments. This spinning method can quickly produce a large number of fibers and can accurately control the diameter of the fibers.   3. Cooling and solidification The polymer fibers extruded from the spinning nozzle pass through a cooling zone (usually by air cooling), during which the molten polymer quickly solidifies into solid fibers. 4. Formation of the fiber web (web formation) When these cooled fibers are ejected onto a mesh frame or collecting belt, the fibers are randomly arranged to form a fiber web (the prototype of nonwoven fabric). This web can be treated and compacted in different ways to form connections between the fibers.   Electrostatic or mechanical action: Sometimes, the fiber web is strengthened by electrostatic adsorption or mechanical methods (such as needle punching, heat pressing, etc.) to make the web structure more compact and enhance the strength of the nonwoven fabric.   Thermal bonding: Some spunbond nonwovens use a thermal bonding process to fix the fibers, that is, heating to melt and bond the contact points between the fibers.   5. Post-processing and finishing After the initial formation of nonwoven fabrics, they usually go through further post-processing steps, such as:   Drying: Remove excess water and solvents. Surface finishing: For example, by surface coating or electrostatic treatment, the performance of non-woven fabrics is improved, such as enhanced breathability, waterproofness, etc. Cutting and molding: According to the required size, the non-woven fabric is cut into suitable sizes for different products. 6. Quality control and testing Finally, the non-woven fabric must undergo a series of quality tests before leaving the factory, including tests on thickness, strength, uniformity, breathability and other properties to ensure that it meets the use requirements of products such as diapers.   The key to the production of disposable nonwoven fabric is to melt the polymer and spin it into fibers through melt spinning technology, and then process it into the final non-woven fabric product through mesh molding and post-processing. Its advantages include high production efficiency, low cost, and recyclable materials. It is widely used in diapers, medical, hygiene and other disposable products.  

There may be many reasons why babies have allergic reactions after using baby diaper, and the common ones include the following aspects:   Diaper material: Some diaper materials may cause baby skin allergies, especially the chemical ingredients, fragrances or dyes used in diapers. Even if the diapers are labeled "non-irritating", some babies' skin may be sensitive to certain ingredients. Eczema or diaper rash: Baby's skin is relatively delicate, and long-term contact between diapers and skin may cause diaper rash (diaper dermatitis). Especially when the diaper is wet, bacteria and fungi are easy to breed, causing inflammatory reactions. Eczema may also be aggravated by the friction of diapers.   Prolonged contact between urine and sweat: If diapers are not changed in time, urine and baby's skin are in contact for a long time, which may cause skin irritation or allergic reactions. Symptoms such as eczema and red buttocks are also common skin problems.   Inappropriate diapers: Diapers that are too tight or designed improperly may cause friction or strangulation marks, and are also prone to skin allergic reactions. Diapers that fit the baby's body shape can reduce these problems.   Your baby's skin is particularly sensitive: Some babies are born with sensitive skin and are prone to allergic reactions to any external stimuli, especially when exposed to new products.   Solutions: Choose the right diapers: Try natural diapers that do not contain fragrances, dyes, or other chemical ingredients. Change diapers in a timely manner: Keep your baby's skin dry and avoid prolonged contact between urine and the skin. Use gentle care products: Choose skin care products that do not contain irritating ingredients, such as fragrance-free wipes, mild baby lotions, etc. Pay attention to the cleanliness of your baby's skin: Gently clean your baby's private parts every time you change diapers, and avoid using irritating cleaning products.  

The nonwoven wrapping fabric in diapers plays multiple roles such as comfort, breathability, protection and structural support. It is a key layer of diapers, which directly affects the baby's comfort and the overall performance of diapers. Specifically, the functions of wrapping nonwoven fabrics in diapers include: 1. Comfort Wrapping nonwoven fabrics are usually located on the outer layer of diapers and directly contact the baby's skin. The fiber structure of nonwoven fabrics is soft and skin-friendly, and will not cause irritation or friction to the baby's delicate skin, so it can provide the baby with a soft and comfortable touch and effectively reduce skin discomfort. 2. Breathability Nonwoven fabrics have good breathability and can allow air to pass through to maintain air circulation inside and outside the diaper. This helps to reduce the accumulation of moisture, keep the baby's skin dry, and prevent the occurrence of skin problems such as diaper rash. Therefore, breathability is a very important function of wrapping nonwoven fabrics in diapers. 3. Separation of moisture removal and absorption layer Wrapping nonwoven fabrics not only provide comfort, but also play a role in separating the absorption layer and the outer layer. It isolates the absorbent core layer (usually composed of highly absorbent materials such as SAP and fluff paper) from the outer waterproof film (such as PE film), preventing the absorbent material from directly contacting the baby's skin, keeping the skin dry and clean. 4. Leakage protection The wrapping nonwoven also helps maintain the structural integrity of the absorbent layer and reduces urine leakage. It ensures that the absorbent layer can distribute urine more evenly, thereby improving the overall moisture absorption and leakage prevention of the diaper. 5. Enhance the overall softness of the diaper The nonwoven fabric enhances the overall flexibility and fit of the diaper through its soft characteristics, allowing the diaper to better adapt to the baby's activities, avoid stiffness, and improve the wearing experience. 6. Reduce odor The wrapping nonwoven in some diapers may be specially treated to add some antibacterial or deodorizing ingredients to help control odor and keep the diaper fresh inside and outside. 7. Appearance and brand value Fabric spunbond nonwoven usually also plays a role in vision and design. Many brands will add printed patterns or colors to the wrapping nonwoven fabric to enhance the appearance of the product. In addition, as part of the brand's iconic materials, nonwoven fabrics also reflect the brand's attention to product quality. Summary: The wrapping nonwoven fabric in diapers plays a vital role in comfort, breathability, structural support and leakage protection. It is directly related to the baby's comfort, skin health and the performance of diapers. Therefore, when designing, nonwoven materials that are soft, breathable and suitable for baby's skin are usually selected.  

The PP side tape in diapers is usually made of polypropylene (PP, Polypropylene) material. Polypropylene is a thermoplastic polymer commonly used in the manufacture of non-woven fabrics, films, plastics and other materials. It has good chemical stability, moisture resistance, toughness and heat resistance, so it has been widely used in the design of diapers. In diapers, adhesive side tape has the following main functions:   Fixation: They can help diapers fit the baby's waist better through the design of adhesive tapes, ensure the stability of diapers, and prevent urine leakage. Comfort: Polypropylene material is relatively soft and can provide a certain degree of comfort while ensuring fixation, without causing excessive friction or discomfort to the baby's skin.   Adjustability: The left and right tapes of PP material are usually adjustable. Through the design of adhesive strips, parents can adjust the tightness of diapers according to the baby's body shape and needs to achieve a better wrapping effect. In actual production, the left and right tapes of PP material are usually fixed to the side of the diaper through heat sealing technology or ultrasonic welding technology. When used, the size of the diaper can be adjusted by bonding or re-adhesion. PP material is not only light but also durable, so it is widely used in the production process. In short, the refastened PP side tape in diapers is mainly made of polypropylene (PP) material, which is soft, light and high-strength, ensuring the comfort and functionality of diapers.

The nonwoven frontal tape for diapers is usually made of nonwoven fabric, which usually uses polypropylene (PP) or polyester (PET) as the main raw material. Nonwoven fabric is a material that is made of fibers into a mesh by physical, chemical or thermal means and reinforced by a certain process. It has the characteristics of good breathability, softness, comfort and strong moisture absorption. For nonwoven frontal tape for diaper, there are single-layer nonwoven front tape and double-layer nonwoven front tape designs. Single-layer nonwoven frontal tape loop: This design usually uses a thinner layer of nonwoven fabric and is suitable for some simple and low-cost diapers. Its advantage is that the production process is relatively simple and the cost is low. Double-layer nonwoven frontal tape: This design usually consists of two layers of nonwoven fabric. The first layer is usually ordinary nonwoven fabric, and the second layer may use softer and more skin-friendly nonwoven fabric, or add some functional coatings, such as waterproof layer, breathable layer, etc., to improve comfort and product performance. Diapers with double-layer designs are usually more comfortable and suitable, especially in terms of protecting the baby's skin.   In summary, whether it is a single-layer or double-layer non-woven front waist tape, the main material is usually non-woven fabric, and the difference lies in the functional differences in the number of layers and design.

In the production of baby diapers, the waistband plays a vital role, mainly in the following aspects: Provide comfortable fit: The spandex waistband can make the diaper fit the baby's waist better, avoid being too loose or too tight, and ensure comfortable wearing. A good fit helps prevent the diaper from shifting and reduces friction or discomfort caused by ill-fitting. Enhance leak-proof function: The disposable full elastic waistband can form a more sealed surround, enhancing the leak-proof effect of the diaper. Through the elastic design, the diaper can better adapt to the baby's body movement and posture changes, and prevent urine from leaking from the waist or thigh area.   Improve flexibility and free movement: When the baby is moving, the elasticity of the waistband allows the diaper to expand and contract with the baby's movement, maintaining comfort and freedom of movement, and will not restrict the baby's movement due to movement, reducing the baby's discomfort. Adapt to babies of different body sizes: Different babies may have different waist sizes. The elastic waistband can adapt to different baby sizes through the design of expansion and contraction, providing better adaptability. This is especially important for growing babies, as their body shape may change, and the elastic waistband can provide appropriate comfort and support as the body shape changes.   In summary, the design of spandex waistband not only improves the comfort, flexibility and leak-proofness of diapers, but also helps to better adapt to babies of different body shapes and improve the overall performance of the product.  

In the production process of baby diaper, the front tape and side tape are both very important parts of the design. They each play a different role to ensure that the diapers are easy to use, comfortable and effective in preventing leakage. 1. Frontal tape:   Fix and adjust the size: The front tape is mainly used to fix the diaper on the baby's waist to ensure that the diaper can fit the baby's body tightly to prevent leakage. According to the baby's body shape and weight, the front tape can be adjusted to make the diaper fit the waist and avoid being too tight or too loose. Easy to put on and take off: The front tape is usually designed to be wide, so that parents can easily fit the diaper to the baby's abdomen from the front and change it when needed. The front tape of modern diapers is usually designed to be adjustable for quick putting on and taking off.   2. Nonwoven side tape: Prevent side leakage: The left and right tapes are usually located on both sides of the diaper. Their function is to help the two sides of the diaper fit tightly to the baby's thighs and buttocks, thereby preventing urine from leaking from the sides. They enhance the fit of the diaper by sticking or hook and loop. Comfort and mobility: The left and right stickers can also ensure that the diaper will not shift when the baby moves, allowing the baby to move more freely and less likely to feel uncomfortable. They adjust the tightness of the waistband to ensure that the diaper can still maintain a proper fit during the baby's activities. The frontal tape loop is mainly responsible for fixing the diaper on the baby's waist and abdomen to prevent front leakage, and it is also easy to put on and take off.   The left and right side tapes are responsible for preventing side leakage and ensuring that the diaper can be properly adjusted according to the baby's body shape and activities, providing better comfort and leakage prevention.