How Self-Adhesive Dressings Manage MVTR to Prevent Maceration and MARSI？
1. Core Technology: The "Breathing" Backing Material
Skin must breathe, even after injury. Low-quality dressings often seal the wound like plastic, trapping perspiration.
Professional-grade self-adhesive dressings typically use Spunlace Non-woven or highly breathable PU film as the backing material:
High MVTR (Moisture Vapor Transmission Rate): This material features an optimized MVTR, allowing perspiration and excess wound water vapor to escape. This prevents the accumulation of moisture that leads to the skin around the wound becoming white and softened (Maceration).
Bacterial Barrier: Although air-permeable, the micro-pore structure is dense enough to effectively block external bacteria and dust, achieving the critical balance of "breathable yet bacteria-proof."
2. The Absorption Layer: Vertical Wicking and Non-Adherence
The central "Island Pad" of the dressing is not just cotton; it incorporates a multi-layered composite structure:
Non-adherent Contact Layer: The wound-contact side is covered with a special PE mesh or film, ensuring the dressing does not adhere to fragile, newly formed granulation tissue while absorbing exudate. This guarantees "pain-free removal" and prevents secondary trauma or bleeding when the dressing is changed.
Vertical Absorption Core: High-absorbency fibers rapidly wick blood and exudate vertically into the core and lock it away. This maintains the optimal moisture balance of the wound bed, preventing the wound from soaking in its own fluid.
3. Adhesive Technology: Mitigating the Risk of MARSI
The adhesive is the soul of the self-adhesive dressing. Clinically, the extremes of "falling off" or "painful stripping" are highly undesirable.
Jining Jianda Medical typically utilizes Medical-grade, low-sensitization Acrylic Adhesive with specialized coating technology:
Patterned Coating: Techniques like grid or wave coating are often used to create air channels, further enhancing comfort.
Gentle Stripping: The adhesion is strong enough to ensure the dressing remains in place even during joint movement (Secure Fixation), but it peels off smoothly upon removal. This minimizes the physical stripping of the stratum corneum, offering maximum protection against MARSI for vulnerable skin (e.g., in elderly patients or infants).
4. Conformability and Human-Centric Design
Beyond materials, practical design enhances performance and patient compliance:
Rounded Corners: Compared to square corners, rounded edges are less likely to catch on clothing or bedding, preventing edge rolling and prolonging the dressing's wear time.
High Conformability: The soft, flexible non-woven material is elastic and conforms perfectly to the contours and movement of joints like the knee and elbow. Patients experience less tension or pulling, significantly improving comfort and quality of life during the recovery phase.
Conclusion
The Self-Adhesive Dressing may appear simple, but it embodies complex technology spanning material science and fluid dynamics. By preventing maceration, avoiding adherence, and ensuring gentle fixation, it elevates wound care from mere "covering" to "active microenvironment management." For healthcare institutions dedicated to high-quality patient care, selecting a superior self-adhesive dressing is a vote of confidence in the patient's swift and comfortable recovery.
