Underpad
Descriptions
【Organizational Structure】
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【Organizational Structure】
Disposable healthcare hygiene products for beds or examination tables. Excludes surgical pads/sheets used in operating rooms and delivery rooms.
Structural Layer
Sub-module
Core Composition
Process/Design Features
Performance Indicators/Advantages
Skin-Friendly Diversion Layer
Basic Design Model
Medical-grade polypropylene non-woven fabric
1. Diamond-shaped diversion grooves formed by hot-pressing process
2. Corresponding to "Rapid Circulation Channel" design in Patent No. 202322965835.0
Liquid diffusion speed increased by more than 40%
Skin-Friendly Diversion Layer
Upgraded Design (Some Models)
Medical-grade polypropylene non-woven fabric + additional mesh fiber cloth diversion layer under the surface layer
M-shaped grooves designed on the mesh fiber cloth to guide the flow direction of liquid
Accelerates liquid penetration to the absorbent layer and avoids local accumulation
Composite Absorbent Layer
Polymer Water-Absorbent Core
Sumitomo (Japan) SAP (210G/m²) + fluff pulp (SAP:fluff pulp = 6:4) + wood pulp layer
Precise proportion mixing of SAP and fluff pulp, with synergistic effect of wood pulp layer
1. Absorption capacity reaches more than 30 times its own weight
2. Achieves "instant absorption and water locking" effect
Composite Absorbent Layer
Multi-Layer Composite Structure (High-End Models)
Five-layer core: Skin-Friendly Layer → Diversion Layer → Absorbent Layer → Breathable Layer → Bottom Film
Nanofiber interweaving technology adopted to enhance the structural stability of the core
Improves core strength and effectively prevents agglomeration and layering
Leak-Proof Barrier Layer
Basic Model
15μm polyethylene (PE) waterproof film
Connected with the surface layer through ultrasonic seamless bonding technology to ensure inter-layer adhesion
Water impermeability ≥ 10cm H₂O, effectively blocking liquid penetration
Leak-Proof Barrier Layer
Postoperative Special Model (Some Models)
15μm polyethylene (PE) waterproof film + TPU coating compounded on the surface
TPU functional coating added on the basis of PE film to balance water resistance and breathability needs
1. Water impermeability ≥ 10cm H₂O
2. Water vapor transmission rate reaches 850g/㎡/24h, balancing water resistance and breathability
【Intended Use】
For hygiene maintenance of bedridden patients and prevention of pressure ulcers.
