Inside a 5-Layer Sanitary Napkin: Virgin Wood Fluff Pulp & Super Absorbent Polymer (SAP) Core Explained
Executive Summary / Quick Answer
A high-performance sanitary napkin relies on a 5-layer engineered architecture: (1) a skin-friendly Cottony or Dry-Net top sheet, (2) an Acquisition Distribution Layer (ADL) for rapid horizontal fluid dispersion, (3) an absorbent core blending untreated virgin wood fluff pulp with Super Absorbent Polymer (SAP) granules that turn liquid into gel, (4) a breathable leak-proof Polyethylene (PE) backsheet, and (5) food/medical-grade positioning adhesives with siliconized release paper.
5-Layer Sanitary Napkin Bill of Materials & Function
| Layer # | Component Name | Material Specification | Core Functional Role |
|---|---|---|---|
| Layer 1 | Top Sheet | Hydrophilic Non-Woven or Perforated PE Dry-Net | Contacts skin directly; transfers fluid downward within seconds |
| Layer 2 | ADL Strip | Acquisition Distribution Non-Woven Layer | Prevents liquid pooling in the center; distributes fluid end-to-end |
| Layer 3 | Absorbent Core | Virgin Wood Fluff Pulp + SAP Granules | Absorbs and locks menstrual fluid into a leak-proof hydrogel |
| Layer 4 | Barrier Backsheet | Impervious Breathable Polyethylene (PE) Film | Prevents fluid from seeping through to undergarments |
| Layer 5 | Adhesive & Release | Hot-Melt Positioning Glue + Siliconized Paper | Secures the pad and wings firmly during movement without residue |
Frequently Asked Questions by B2B Buyers
Why is virgin wood fluff pulp combined with SAP instead of using only pulp?
Pure fluff pulp provides soft cushioning and initial capillary absorption, but under body pressure (such as sitting), pulp alone can release moisture back to the surface. Adding Super Absorbent Polymer (SAP) chemically locks up to 100x its weight in fluid into a solid gel, ensuring zero wetback and thin, comfortable pad profiles.
What glue is used on the back of Shubh Enterprises sanitary napkins?
We use specialized hot-melt construction and positioning adhesives that hold the central pad and side wings securely to fabric during daily activity while peeling off cleanly without leaving sticky residue on clothing.
Where are Shubh Enterprises sanitary napkins manufactured?
All pads are manufactured under strict hygiene protocols at our 7,500 sq. ft. facility at Plot No. M-7, 61 to 63 & 74 to 76, Apparel & Pharma Cluster, MPIDC, Betma, Indore, Madhya Pradesh – 453001.
Need Bulk Samples, Custom OEM Packs, or Tender Pricing?
Speak directly with our B2B manufacturing desk for 240mm, 280mm XL, and 320mm XXL Straight and Tri-Fold sanitary napkins.