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In healthcare and long-term care settings, maintaining a dry and hygienic environment is critical for both patient comfort and surface protection. A medical underpad is a multi-layered, disposable absorbent sheet designed to protect bedding, furniture, and wheelchairs from fluid damage caused by incontinence, wound exudate, or surgical procedures. Understanding the technical construction of these pads is essential for selecting the appropriate product for clinical needs.

What is the material construction of an underpad?

A high-performance underpad from Jianda Medical is engineered with a specific layered structure. Each layer serves a distinct functional purpose to ensure moisture is moved away from the skin and contained within the pad.

Soft Non-Woven Top Sheet

The top layer consists of a hydrophilic non-woven fabric. This material is designed to be soft against the skin to minimize friction and irritation. Its primary function is to allow liquid to pass through quickly into the absorbent core while remaining dry to the touch.

Absorbent Core with SAP

The middle layer is the most critical for fluid management. It typically contains a blend of virgin fluff pulp and Super Absorbent Polymer (SAP). The fluff pulp provides the initial structure for liquid distribution, while the SAP chemically locks the moisture into a gel form. This process prevents "rewet," where liquid is forced back to the surface under the weight of a patient.

Impermeable PE Backsheet

The bottom layer is made of polyethylene (PE) film. This waterproof barrier is completely impermeable, ensuring that no liquid leaks through to the mattress or upholstery below. The PE film is often designed with a non-slip texture to help the pad remain in a fixed position during patient movement.

What are the primary technical features of the product?

Jianda Medical designs its underpad range to meet specific medical performance standards:

• Sealed Edges: All four sides of the pad are heat-sealed. This prevents the internal absorbent material from leaking out and ensures that fluids are contained within the boundaries of the pad.

• Rapid Wick Rate: The construction allows for fast acquisition of fluids, reducing the amount of time the patient's skin is in contact with moisture.

• Multiple Size Options: Underpads are manufactured in various dimensions—such as 60x60cm and 60x90cm—to accommodate different surfaces, from examination chairs to full-sized hospital beds.

• Variable Absorbency Levels: The amount of SAP and fluff pulp can be adjusted during manufacturing to create pads for light, medium, or heavy fluid management.

Where are underpads utilized in clinical practice?

The underpad is a versatile consumable used across various medical departments:

• Incontinence Care: In nursing homes and geriatric wards, they are used to manage urinary and fecal incontinence, protecting linen and reducing the frequency of full bed changes.

• Surgical and Maternity Wards: Used during and after procedures to manage blood and amniotic fluid.

• Wound Care: Placed under limbs during dressing changes to catch irrigation fluids or wound drainage.

• General Diagnostics: Used on examination tables to maintain a sterile barrier between the patient and the equipment.

How does an underpad contribute to patient health?

The use of a high-quality underpad is directly linked to the prevention of moisture-associated skin damage (MASD). By locking moisture away from the epidermis, the pad helps maintain skin integrity and prevents maceration. This is a vital component of pressure ulcer prevention protocols in immobile or bedridden patients.

What quality standards does Jianda Medical follow?

Jianda Medical manufactures underpads in compliance with ISO 13485 quality management systems. Each batch is tested for:

• Absorption Capacity: Measuring the total volume of fluid the pad can hold.

• Rewet Values: Ensuring the top surface remains dry after fluid exposure.

• Seal Integrity: Verifying that the edges do not leak under pressure.

Conclusion

A medical underpad is a sophisticated fluid management tool defined by its multi-layer construction and ability to lock in moisture. By utilizing SAP technology and waterproof PE backing, Jianda Medical provides a solution that protects both patient skin and healthcare infrastructure. For medical facilities, selecting an underpad with the correct technical specifications is an objective way to improve hygiene and reduce the costs associated with laundry and skin-related complications.