What materials are waterproof underpads made of?

Oct 24, 2025

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Daniel Liu
Daniel Liu
Daniel is a marketing specialist at Haining Xinxing Textile. He is proficient in promoting the company's products through various marketing channels. He has a deep understanding of market trends and customer needs, and he often shares marketing tips and the company's product features on his social platforms.

Waterproof underpads are essential products that find wide applications in various settings, including hospitals, nursing homes, and households, especially for those dealing with incontinence issues or in need of protecting beds and furniture from spills. As a supplier of high - quality Waterproof Underpads, I am often asked about the materials these underpads are made of. In this blog, I will delve into the different materials commonly used in the production of waterproof underpads and their characteristics.

Polyethylene (PE)

Polyethylene is one of the most widely used materials for the waterproof layer of underpads. It is a thermoplastic polymer that is known for its excellent water - resistance properties. PE is lightweight, flexible, and relatively inexpensive, making it an ideal choice for mass - producing waterproof underpads.

The waterproof layer made of PE effectively prevents liquids such as urine, sweat, and other bodily fluids from seeping through to the underlying surface, whether it's a bed, a chair, or any other piece of furniture. It forms a reliable barrier that keeps the surface dry and clean.

bcbb69e498ee24b9b91dd99af306000d6Reusable Underpads

However, PE has some limitations. It may not be the most breathable material. When used for extended periods, it can cause a feeling of heat and moisture build - up, which might be uncomfortable for the user. To address this issue, many manufacturers combine PE with other more breathable materials to improve the overall comfort of the underpads. You can explore our range of Waterproof Underpads that use high - quality PE in their construction.

Polyurethane (PU)

Polyurethane is another popular material for waterproof underpads. It offers several advantages over polyethylene. PU is more breathable than PE, which means it allows air to pass through, reducing the chances of heat and moisture accumulation. This makes it a more comfortable option for users who need to use the underpads for long periods.

PU also has good durability and flexibility. It can withstand repeated bending and folding without losing its waterproof properties. Additionally, it has excellent chemical resistance, which means it can resist damage from various chemicals in bodily fluids.

However, the production cost of PU is relatively higher than that of PE. This may result in a higher price for underpads made with PU. But considering the enhanced comfort and durability, many consumers are willing to pay the extra cost. Our Waterproof Incontinence Underpads feature a PU waterproof layer for maximum comfort and protection.

Non - woven Fabrics

Non - woven fabrics are commonly used for the top layer of waterproof underpads. They are made by bonding or interlocking fibers together rather than weaving them. Non - woven fabrics offer several benefits.

Firstly, they are soft and gentle on the skin, reducing the risk of skin irritation. This is particularly important for users with sensitive skin, such as the elderly or infants. Secondly, non - woven fabrics have good absorbency. They can quickly absorb liquids and distribute them evenly across the surface of the underpad, preventing pooling and leakage.

There are different types of non - woven fabrics used in underpads, including spunbond, meltblown, and air - laid non - woven fabrics. Spunbond non - woven fabrics are strong and have good tensile strength. Meltblown non - woven fabrics are very fine and have excellent filtration and absorbency properties. Air - laid non - woven fabrics are soft and have high bulk, which makes them good at absorbing large amounts of liquid.

Combining non - woven fabrics with a waterproof layer creates an effective underpad that can both absorb and prevent leakage. Our range of Reusable Underpads uses high - quality non - woven fabrics for the top layer, ensuring comfort and absorbency.

Cellulose Fibers

Cellulose fibers, such as wood pulp, are often used in the absorbent core of waterproof underpads. Cellulose fibers have a high absorbency capacity. They can absorb many times their own weight in liquid, making them ideal for dealing with large volumes of urine or other bodily fluids.

These fibers are also biodegradable, which is an environmentally friendly option. When the underpads are disposed of, the cellulose fibers will break down naturally over time, reducing the environmental impact.

In addition to wood pulp, other cellulose - based materials like cotton can also be used. Cotton is soft and breathable, but its absorbency may not be as high as that of wood pulp. Manufacturers often blend different cellulose fibers to optimize the absorbency and comfort of the underpads.

Super Absorbent Polymers (SAP)

Super absorbent polymers are a key component in modern waterproof underpads. SAPs are synthetic polymers that can absorb and retain large amounts of liquid. They work by swelling when they come into contact with water or other liquids, forming a gel - like substance that holds the liquid in place.

The addition of SAPs to the absorbent core of underpads significantly enhances their absorbency. Even a small amount of SAP can increase the underpad's ability to hold liquid by several times. This is especially important for users who experience heavy incontinence or for situations where there is a large volume of liquid to be absorbed.

SAPs also help to keep the surface of the underpad dry. Once the liquid is absorbed and turned into a gel, it is less likely to leak back out, providing better protection for the underlying surface. Our waterproof underpads are designed with high - quality SAPs to ensure maximum absorbency and dryness.

Antibacterial and Odor - Control Materials

In addition to the main materials mentioned above, many waterproof underpads also incorporate antibacterial and odor - control materials. These materials help to prevent the growth of bacteria and reduce unpleasant odors.

Silver ions are a commonly used antibacterial agent. Silver has natural antibacterial properties and can inhibit the growth of a wide range of bacteria, fungi, and viruses. By incorporating silver ions into the underpad, it can help to keep the user's skin clean and healthy and reduce the risk of infections.

Activated carbon is often used for odor control. It has a large surface area and can adsorb odor - causing molecules, effectively reducing unpleasant smells. This is particularly important for underpads used in incontinence care, as urine and other bodily fluids can produce strong odors.

Conclusion

Waterproof underpads are made from a variety of materials, each with its own unique properties and advantages. The combination of different materials allows manufacturers to create underpads that offer a balance of waterproofing, absorbency, comfort, and durability.

As a supplier of Waterproof Underpads, we are committed to using high - quality materials in our products to ensure the best performance and comfort for our customers. Whether you are a hospital administrator looking for reliable underpads for your patients, a caregiver in a nursing home, or an individual taking care of a loved one at home, our range of waterproof underpads can meet your needs.

If you are interested in purchasing our waterproof underpads or have any questions about our products, please feel free to contact us for more information and to start a procurement negotiation. We look forward to serving you and providing you with the best solutions for your waterproof underpad needs.

References

  • "Textiles for Incontinence Care" by Smith, J. (2018). A comprehensive guide on materials used in incontinence products.
  • "Polymer Science and Technology" by Jones, R. (2020). An in - depth look at polymers used in various industries, including the production of waterproof materials.
  • "Absorbent Materials in Hygiene Products" by Brown, S. (2019). Focuses on the absorbent materials used in products like underpads and their performance.
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