Complete Technical Guide To Underpad Making Machines: Features, Structure, Raw Materials & Market Fit

The rapid development of the disposable hygiene products industry has created demand for efficient, flexible and specialized production equipment. Ruian Take Off Machinery, a professional disposable hygiene equipment manufacturer with 20 years of industry experience, offers a full range of underpad making machines built on a unified modular technology platform and shared mechanical chassis. Deeply optimized for different application scenarios, these machines cover all production needs from entry-level trial production to high-end mass manufacturing. As of 2026, this series has been exported to over 50 countries and regions worldwide, serving more than 500 international customers across medical care, adult incontinence, pet supplies and other sectors.

1. Core Features of the Five Product Categories

This series is derived from the same core technical architecture into five specialized categories, each optimized for specific production pain points while retaining cross-category production capabilities, achieving a perfect balance of specialization and versatility. All machines are ISO 9001 certified, use internationally renowned brand core components, and have an average service life of over 10 years.

1.1 Universal Underpad Machine

As the base model of the series, this machine is designed with maximum configuration flexibility and return on investment as core principles. Officially available in 3 configuration grades, it provides optimal solutions for both economic and high-speed requirements. It can seamlessly switch between producing medical underpads, adult incontinence pads, pet training pads and disposable bed sheets without hardware changes. It also reserves complete future upgrade interfaces, allowing customers to gradually add servo motors and other core components as production needs grow, enabling a smooth upgrade from entry-level to high-speed models and effectively reducing trial and error costs and long-term investment risks. Its modular design also ensures high spare part compatibility, significantly reducing post-maintenance costs. For first-time investors in the hygiene industry, this machine allows them to explore different markets with minimal risk and flexibly adjust their product mix based on market feedback, avoiding operational risks from single-product market fluctuations.

1.2 Adult Incontinence Pad Making Machine

Tailored for the global aging market, this machine features 17 technical optimizations addressing the production challenges of large-size, high-grammage products. It can produce adult incontinence pads up to 1.8 meters long and 20mm thick. Using the company's exclusive 13-year developed 3D forming technology, it ensures uniform distribution of super absorbent polymer (SAP) throughout the absorbent core with a distribution error controlled within ±2%, completely solving the industry-wide problems of side leakage and clumping common in large-size products. Optional leak-proof edges and three-dimensional guardrail devices further enhance product comfort and protection. With the global population aged 65 and above exceeding 1 billion and the adult incontinence products market growing at 12% annually, this machine helps customers capture this blue ocean market opportunity by producing high-quality products meeting international standards.

1.3 Disposable Bed Pads Making Machine

Designed in strict accordance with medical-grade production standards, this machine can be optionally equipped with an all-stainless steel frame and enclosed glass safety doors, allowing direct installation in Class 100,000 clean rooms. It is equipped with 4 sets of high-precision raw material detection sensors that monitor raw material status in real time and automatically reject defective products, ensuring stable finished product quality. Using American MERCOTAC slip ring technology and Japanese Omron precision temperature control system, it guarantees clear and beautiful embossing and wrinkle-free products, meeting the stringent quality requirements of hospitals, nursing homes and medical consumable exporters. Medical disposable bed pads are one of the most profitable categories in the hygiene industry, with a retail price of over $5 per 60×90cm medical pad in European and American markets, making this machine an ideal entry point into the high-value medical consumables market.

1.4 High-Speed Mass Production Incontinence Pad Making Machine

Optimized for large-scale continuous production, the entire machine structure is reinforced to support 24/7 uninterrupted operation, with an officially measured mean time between failures (MTBF) exceeding 720 hours. The full-servo drive model achieves a maximum production speed of 800 pieces per minute while consuming 15% less energy than the industry average, saving customers over $13,900 in electricity costs annually. Highly automated, the entire production line requires only 2 workers to operate, significantly reducing labor costs. Its core advantage lies in solving the industry-wide problems of static interference and material flying during high-speed operation, maintaining stable production even when the pulverizer runs at 3000 RPM, ensuring consistent product quality at maximum speed. For suppliers to large supermarket chains like Walmart and Carrefour, as well as large-scale pet pad manufacturers, this machine enables mass production, reduces unit product costs and enhances market competitiveness. Official case studies show that an American customer uses 5 lines of this model to produce over 1 million pet pads daily for the entire North American market.

1.5 Multi-Specification Flexible Underpad Making Machine

With maximum production flexibility as its core advantage, this machine supports size adjustments from 30×45cm to 180×60cm with a thickness adjustment accuracy of 0.1mm. No mold changes are required – product specification conversion can be completed in just 5 minutes by entering parameters on the touch screen, enabling rapid response to changing market demands. Against the backdrop of current consumption upgrades and rapid e-commerce development, market demand for personalized and diversified products is increasing, making small-batch, multi-variety production a growing trend. This machine is particularly suitable for e-commerce brands, private label sellers and flexible enterprises that need to frequently adjust their product lines, helping them quickly launch new products, seize market opportunities, and reduce inventory backlog and capital occupation.

2. Modular Structure of the Equipment

The full range of underpad making machines adopts a six-module design, with each module operating independently while working in coordination, facilitating subsequent maintenance and model upgrades. All key components are officially certified international brands, ensuring equipment stability and reliability with an average service life of over 10 years.

2.1 Raw Material Unwinding & Conveying System

Equipped with 6 independent servo unwinding racks corresponding to six core raw materials: fluff pulp, upper and lower tissue paper, PE bottom film, non-woven fabric and release paper. Each unwinding rack is fitted with independent tension sensors and servo motors for precise material conveying and tension control. It supports automatic splicing – when a roll of raw material is nearly exhausted, the system automatically detects and activates the standby roll, completing material replacement without stopping production, reducing downtime and improving equipment utilization. Integrated with an advanced constant tension control system, it adjusts motor speed in real time through feedback to ensure consistent conveying speed for all raw materials, avoiding deviation, breakage and wrinkling. Using German Habasit imported conveyor belts and American Gates timing belts, it provides smooth transmission, low noise and a service life of over 5 years, significantly reducing equipment maintenance costs and downtime.

2.2 Pulverizing & Absorbent Core Forming System

As the most critical technical module of the equipment, it consists of a high-speed fluff pulp pulverizer, negative pressure forming air box and SAP precise application device. This is Take Off Machinery's core advantage area with 13 years of technical accumulation, successfully solving the industry-wide problem of static interference during high-speed operation. The high-speed fluff pulp pulverizer uses special alloy cutters with a rotational speed of up to 3000 RPM, uniformly pulverizing pulp boards into fibers of 2-3mm in length to ensure the fluffiness and absorption performance of the absorbent core. Through the negative pressure adsorption principle, the pulverized pulp fibers are precisely shaped into the customer-specified shape and thickness. At the same time, it is equipped with a high-precision screw-type SAP application device that sprays super absorbent polymer in precise quantities according to product requirements, with an addition error controlled within ±2%. This system ensures the absorbent core is free from clumping, powder leakage and has uniform distribution, which is the key to the series' ability to achieve high-speed and stable production.

2.3 Laminating & Embossing System

Consists of three independent compaction rollers and one heating embossing roller, using a progressive laminating process to firmly press the five layers of raw materials into a single whole. The first two compaction rollers use different pressure settings to gradually compact each layer of material, avoiding material deformation and SAP displacement caused by one-time high pressure. The third compaction roller ensures uniform thickness of the final product. The heating embossing roller is equipped with a Japanese Omron high-precision temperature controller with a temperature control accuracy of ±1℃, allowing flexible adjustment of embossing temperature according to different materials and seasons to ensure clear and consistent patterns. The embossing roller surface is specially hardened for good wear resistance and long service life. Various embossing patterns, diversion grooves and brand logos can be customized according to customer requirements, not only enhancing product aesthetics and recognition but also optimizing liquid absorption and diffusion paths to improve product performance.

2.4 Cutting & Anti-Flying System

Adopts a full-servo driven rotary cutter with a cutting accuracy of up to ±1mm, ensuring consistent dimensions for every product. The cutter is made of high-speed steel with special heat treatment for high hardness, good wear resistance and long service life. Equipped with a patented flat pressure anti-flying device, it uses flexible pressure strips to hold the product firmly during cutting, effectively solving the industry-wide problem of material flying during high-speed operation, ensuring stable product conveyance without scattering or stacking even at the maximum speed of 800 pieces per minute. Integrated with an automatic waste edge collection system, it uses a negative pressure fan to automatically suck cutting waste into a collection box, keeping the production workshop clean, reducing manual cleaning workload and preventing waste edges from being drawn into the equipment and causing malfunctions. The system is also equipped with material breakage detection and blockage alarm functions, which immediately stop the machine and issue an alarm in case of abnormalities to protect equipment and personnel safety.

2.5 Folding & Output System

Supports multiple folding methods including half-fold, tri-fold and quarter-fold, which can be flexibly adjusted according to product specifications and packaging requirements. The folding mechanism is servo-driven for high folding accuracy and smooth operation without damaging the product. Uses a turntable type sheet arranging device to neatly arrange the cut products in the set quantity for subsequent counting and packaging. The sheet arranging device is equipped with photoelectric sensors for accurate counting, ensuring the correct number of products per stack. The output end uses a non-slip conveyor belt for smooth operation and can be directly connected to semi-automatic or fully automatic packaging machines, realizing fully automated production from raw material input to finished product packaging. The system also reserves various interfaces for adding auxiliary equipment such as stackers, weighing machines and metal detectors as required, further improving production line automation and efficiency.

2.6 Electrical Control & Safety System

Adopts Japanese Mitsubishi PLC and 10-inch color touch screen as the core control unit, with a user-friendly interface that supports multiple languages including Chinese, English, Spanish and Arabic. The core motors use German Siemens variable frequency motors and Japanese Mitsubishi servo motors for smooth operation, fast response and low energy consumption. The entire line is equipped with multiple emergency stop buttons, safety light curtains and safety doors, forming a multi-layer safety protection system that immediately stops the machine and issues an alarm if personnel or objects enter the dangerous area, ensuring operator safety. Optional remote monitoring system enables real-time monitoring of equipment operation status, data collection and remote fault diagnosis via the internet, allowing technical personnel to solve most common problems without being on-site, significantly reducing fault response time. The system also has production data statistics functions, automatically recording key data such as output, yield rate and running time to help customers optimize production management.

Official Core Component Brand & Origin Certification:

3. Global Supply Chain Guide for Core Production Raw Materials

Underpad products adopt an internationally recognized standard five-layer composite structure, from the skin-contact side to the leak-proof side: surface non-woven fabric, upper diversion tissue paper, fluff pulp + SAP mixed absorbent core, lower wrapping tissue paper, bottom PE leak-proof film, with each layer precisely bonded by hot melt adhesive to form a complete protection system.

As a global market-oriented equipment supplier, our production lines are fully compatible with raw materials from all regions and grades worldwide. Parameters can be flexibly adjusted according to your country's supply chain characteristics, cost structure and market access standards, helping you achieve localized procurement and maximize overall production cost reduction. Officially provides one-stop supply services for 14 major raw materials, with prices 20-30% lower than local procurement.

3.1 Fluff Pulp (Core of Global Supply Chain)

As the skeleton material of the absorbent core, it accounts for 30-40% of the total product cost, with the global supply chain highly concentrated in three major producing regions:

North America (USA, Canada): Softwood pulp from brands such as International Paper (IP), Georgia-Pacific (GP) and Stora Enso is the gold standard for global medical-grade products, with fiber lengths of 2-3mm, whiteness ≥85%, fast liquid absorption speed and strong fiber interweaving ability. Fully compliant with EU CE and US FDA medical-grade certification requirements, it is the first choice for customers in high-end markets such as Europe, America and Japan.

South America (Brazil): Hardwood pulp from brands such as Suzano is 20-25% cheaper than North American softwood pulp. Although the fibers are slightly shorter and whiteness is lower, it fully meets the requirements for pet pads and general civilian products, making it the best cost choice for customers in emerging markets such as Southeast Asia, the Middle East and Africa.

Europe: Local pulp has stable quality but higher prices, suitable for EU customers to purchase locally.

Our equipment is equipped with an adjustable pulverizing system and forming air box, allowing one-click adjustment of pulverizer speed and negative pressure parameters via the touch screen, perfectly adapting to pulp raw materials from different origins and fiber lengths without additional modifications.

3.2 Super Absorbent Polymer (SAP) - Key to Performance & Certification

As the core water-locking material, SAP quality directly determines product absorption performance and market access thresholds:

Japanese Brands (Sumitomo, San-Dia Polymers): Globally recognized top-tier SAP, with physiological saline absorption ratio ≥60 times, rewet ≤5g, high gel strength and no clumping. Fully compliant with the world's strictest medical and environmental standards, it is an essential choice for exporting to high-end markets such as Europe, America and Japan.

Chinese Brands: After years of technological iteration, domestic SAP performance is close to international advanced levels, with physiological saline absorption ratio of 40-50 times, priced at only 50% of Japanese brands. Most have obtained EU REACH and US FDA certifications, making them the mainstream choice for the global mid-range market.

European Brands (BASF, Evonik): Excellent quality but higher prices, suitable for EU local customers.

Our high-precision screw-type SAP application system, with an addition accuracy controlled within ±2%, can precisely adjust SAP dosage (0.5-10g per piece) according to different market product standards, helping you minimize costs while meeting performance requirements.

3.3 Tissue Paper - Critical Auxiliary Material Affecting Equipment Efficiency

Divided into upper and lower layers wrapping the absorbent core, with the breathability of the lower tissue paper directly determining the maximum operating speed of the equipment:

The lower tissue paper requires extremely high breathability; otherwise, pulp fibers cannot be uniformly adsorbed, resulting in uneven absorbent core thickness and reducing equipment speed by more than 30% in severe cases. Officially recommends high-breathability tissue paper from brands such as China Yinge, with a grammage of 13-15g/㎡ being appropriate.

The upper tissue paper mainly plays a diversion and covering role, with relatively lower requirements. Ordinary tissue paper of 12-14g/㎡ can meet the demand, and local suppliers are available in almost all countries.

Our equipment has been fully designed considering the performance differences of tissue paper brands worldwide, equipped with an intelligent tension compensation system that automatically adapts to tissue paper raw materials of different breathability and strength to ensure stable equipment operation.

3.4 Non-Woven Fabric - Core of Product Feel & Environmental Requirements

As the surface material in direct contact with the skin, non-woven fabric quality determines the user experience and must comply with different countries' environmental regulations:

100% Polypropylene Spunbond Non-Woven Fabric (15-25g/㎡): Globally universal standard material, soft and skin-friendly with good breathability. Locally available in almost all countries, it is the first choice for mid-to-high-end products.

Hot Air Non-Woven Fabric: More fluffy and soft to the touch, mostly used for high-end baby changing mats and maternity pads, but with higher costs.

Calcium Carbonate Filled Non-Woven Fabric: Adding 30-50% calcium carbonate can reduce costs by 40-50%, but softness and breathability decrease, only suitable for low-end pet pads. Official data shows that 100% polypropylene non-woven fabric costs approximately $1,810 per ton, while 50% filled non-woven fabric only costs $970-1,110 per ton.

In response to the EU's increasingly strict plastic recycling and biodegradability requirements, our equipment is fully compatible with PLA and other biodegradable non-woven fabrics, helping you lay out the green market in advance and comply with the latest regulations such as the EU Single-Use Plastics Directive.

3.5 PE Film - Guarantee of Leak-Proof Performance & Compliance

As the bottom leak-proof material, PE film quality is directly related to product leak-proof effect and environmental compliance:

100% Pure Polyethylene PE Film (15-30μm): Stable leak-proof effect and high tensile strength, with elongation at break ≥300%, making it the standard configuration for global mid-to-high-end products.

Calcium Carbonate Filled PE Film: Reduces costs by 30-40%, but puncture resistance decreases and pinhole leakage is prone to occur, only suitable for low-end products. Official data shows that 100% pure PE film costs approximately $1,880 per ton, while 50% filled PE film only costs $1,110 per ton.

Our equipment supports PE films of various thicknesses and materials, including biodegradable PE films. At the same time, PE films can be printed with various colors, patterns and brand information. We can recommend the world's leading printing equipment suppliers to achieve integrated production and printing.

3.6 Hot Melt Adhesive - Guarantee of Bonding Strength & Durability

Used to bond each layer of the structure, although the dosage is small (2-5g per piece), it directly affects product service life and temperature resistance:

International Brands (Henkel Germany, H.B. Fuller USA): High bonding strength, wide temperature resistance range (-20℃ to 80℃), slow aging speed, fully compliant with global medical and food contact standards, making them the first choice for exporting to high-end markets.

Chinese Brands: Performance already meets the needs of most civilian products, priced at only 1/3 of international brands, with extremely high cost performance, making them the mainstream choice for customers in emerging markets.

Our equipment is equipped with international standard hot melt adhesive interfaces, compatible with all brands of hot melt adhesive machines and hot melt adhesive products worldwide, allowing you to freely choose according to local market prices and supply conditions. Officially recommends high-end customers use American ITW or Nordson glue applicators for more precise glue control and reduced glue waste.

4. Market & Customer Fit

The full range of underpad making machines adopts a graded drive technology architecture, offering four drive levels (single motor, variable frequency, semi-servo, full-servo) and two standard widths (600mm, 800mm), totaling 8 standardized models that precisely match the production needs of customers in different regions, scales and development stages worldwide. All models share a unified core technology platform and modular design, allowing customers to gradually upgrade equipment configurations as their business develops to maximize investment returns. Official standard delivery time is 4 months, and all equipment is non-standard custom production.

4.1 Full-Servo High-Speed Models (TO-BKA-600/800)

Core Parameters: Maximum line speed 300m/min (600mm width) / 250m/min (800mm width), corresponding to a production capacity of approximately 600-800 pieces per minute (standard 60×90cm product). The entire line uses Japanese Mitsubishi servo motor drives, with all action synchronization accuracy reaching ±0.1mm.

Precisely Fits Customers:

Medical Consumable Exporters: This model is strictly designed according to medical-grade standards, optionally equipped with an all-stainless steel frame, enclosed glass safety doors and high-efficiency dust collection system, allowing direct installation in Class 100,000 clean rooms. Fully compliant with the world's strictest medical equipment certification requirements such as EU CE, US FDA and Japan MHLW, it is the only choice for producing high-end medical products such as disposable medical bed pads, surgical pads and maternity pads.

International Brand OEMs: Designed specifically for undertaking large orders from international giants such as Walmart, Carrefour, Procter & Gamble and Kimberly-Clark, with an average MTBF exceeding 720 hours and a yield rate ≥98%, enabling stable delivery of high-quality, large-volume orders. Highly automated, the entire production line requires only 2 workers to operate, perfectly adapting to regions with high labor costs such as Europe, America and Japan.

High-End Market Private Labelers: Can produce the highest quality adult incontinence pads and baby changing mats. The exclusive 3D forming technology ensures uniform SAP distribution, making product absorption performance and leak-proof effect reach international first-class levels, helping customers build brand advantages in the highly competitive high-end market.

Investment Return: Although the initial investment is relatively high, the standard return on investment (ROI) period is approximately 18-24 months due to high production capacity, low labor costs and high product added value.

4.2 Semi-Servo Stable Models (TO-BKB-600/800)

Core Parameters: Line speed 150-200m/min, corresponding to a production capacity of approximately 300-500 pieces per minute (standard 60×90cm product). Adopts a "variable frequency main drive + servo key actions" hybrid architecture, using servo motors for key processes such as cutting, folding and SAP application to ensure accuracy and stability.

Precisely Fits Customers:

Medium-Sized Hygiene Product Manufacturers: These enterprises usually have a certain market foundation and are rapidly expanding production capacity, needing to find the best balance between production efficiency and investment cost. The semi-servo model reduces the initial investment by approximately 30% while ensuring core performance, making it the most cost-effective choice.

Regional Brand Owners: Mainly serving local brands in emerging markets such as Southeast Asia, the Middle East and Latin America, where market demand is growing rapidly but consumers are more price-sensitive. Products produced by this model fully meet local market requirements while having strong price competitiveness.

Diversified Production Enterprises: Enterprises producing multiple types of hygiene products. The flexibility and stability of the semi-servo model make it well-suited for multi-variety production, and it reserves complete upgrade interfaces for future upgrading to full-servo high-speed lines as business needs develop.

Investment Return: Moderate investment threshold and low operating costs, with a standard ROI period of approximately 12-18 months, making it the most popular model worldwide.

4.3 Variable Frequency Economic Models (TO-BKC-600/800)

Core Parameters: Line speed 120-150m/min, corresponding to a production capacity of approximately 200-300 pieces per minute (standard 60×90cm product). Adopts variable frequency motor drive with a simple and reliable structure and low operating costs.

Precisely Fits Customers:

Start-up Enterprises: First-time investors in the hygiene products industry with limited funds and low risk tolerance. The investment threshold of the variable frequency model is only about 40% of the full-servo model, helping customers enter the market with minimal investment and verify their business model.

Small-Batch Multi-Variety Producers: Enterprises mainly serving e-commerce platforms, local retailers and special custom orders that require frequent product specification changes. The variable frequency model is easy to operate and has fast changeover speeds, making it very suitable for this production mode.

Large-Scale Pet Pad Manufacturers: The pet pad market has thin profits and relies on scale. Official data shows that the United States has 100 million pet dogs, each using 2-3 pads per day, creating a huge market. The variable frequency model consumes 10% less energy than the industry average, has a simple structure and is easy to maintain, minimizing unit product production costs and helping customers maintain advantages in fierce price competition. Particularly suitable for regions with low labor costs such as India, Vietnam and Bangladesh.

Investment Return: Low investment threshold and fast payback, with a standard ROI period of approximately 8-12 months.

4.4 Single-Motor Entry-Level Models (TO-BKD-600/800)

Core Parameters: Line speed 60-80m/min, corresponding to a production capacity of approximately 100-150 pieces per minute (standard 60×90cm product). Adopts single-motor mechanical transmission with the simplest structure and easiest operation.

Precisely Fits Customers:

Market Trial Customers: Customers who need to test local market demand before large-scale investment. The single-motor model has the lowest price, allowing customers to conduct market trials at minimal cost and decide whether to expand investment based on market feedback.

Small Family Workshops: Small producers mainly serving local township markets with very limited funds and technical capabilities. This model is extremely easy to operate – ordinary workers can operate independently after 1 day of training – with extremely low maintenance costs and almost no need for professional technicians.

Budget-Conscious Individual Investors: Individual investors who want to enter the hygiene products industry but have very limited funds. The single-motor model is the most affordable option for them. Although production capacity is relatively low, the profit margin is still considerable, allowing for gradual accumulation of funds and experience.

Investment Return: Extremely low investment threshold and fastest payback, with a standard ROI period of approximately 6-8 months, making it very suitable for promotion in economically underdeveloped regions.