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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.  

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.