Underpads look simple. A hospital procurement officer knows they are not. A bed pad sits between a patient and a mattress for hours, so it has to lock fluid, stay put, and not shred in a warm laundry cart — except these are disposable, so they have to be cheap enough to burn through by the thousand. If you are sourcing disposable underpad for hospital use as a private-label or contract OEM buyer, the spec decisions are about fluid capacity, the backsheet, and the certs that let you sell into a clinical channel at all.
What a hospital-grade underpad is actually made of
Three layers, and each one is a trade-off. The top sheet is a nonwoven that feels soft and lets fluid pass fast. The middle is fluff pulp plus SAP — the same chemistry as a diaper, just laid flat. The bottom is a PE film that is waterproof. The variable buyers miss is the SAP load: a 60×90 cm pad with 8–10 g of SAP locks roughly 600–800 ml; drop the SAP and you get a pad that wets through to the sheet. We have seen "economy" hospital bids quietly halve the SAP to hit a price, then fail on the ward.
Size, wing fold, and where the pad actually goes
Most hospital use runs on 60×90 cm (sometimes called "chux"), with a tuck-in wing version for theatre and imaging tables. The wing fold keeps the pad from curling when a patient is moved. For home care and nursing homes, 60×60 cm is common. Capacity you should spec by use: a 60×90 cm pad for incontinence should hold 600 ml+; a thinner 40×60 cm for procedure drip trays needs less but still a sealed edge.
| Use | Common size | SAP load | Backsheet | Cert to ask for |
|---|---|---|---|---|
| Incontinence bed pad | 60×90 cm | 8–10 g | PE film, sealed edge | ISO 13485, CE |
| Procedure / drip | 40×60 cm | 4–6 g | PE film | ISO 13485 |
| Theatre / imaging wing | 60×90 cm wing | 8–10 g | PE film, tuck wings | ISO 13485, CE |
| Post-op absorbent | 50×70 cm | 6–8 g | Breathable PE | ISO 13485, OEKO-TEX |
If you intend to sell into the EU or a regulated market, the ISO 13485 quality system for medical devices is the gate most distributors will not move without. A plant can make a fine pad and still not qualify for hospital tender because the paper trail is not there. We hold ISO 13485 and show the cert on the golden sample, not after the container ships.
MOQ, packing and the cost you actually pay
Underpads are light and bulky, so freight eats a bigger share than with diapers. A 40HQ of 60×90 cm pads runs roughly 300,000–450,000 pieces depending on ply. MOQ per specification starts around 30,000 pieces; private-label print on the bag adds a plate cost but barely moves per-piece price above a certain volume. If your channel is nursing homes or home-care, pair the pad with the adult incontinence OEM line so the tender reads as one care bundle.
One more cost note: because underpads are low-margin and high-volume, the landed cost math matters more than the FOB. Our CIF cost breakdown shows how freight and duty swing the real unit price.
What a buyer should check before loading
Run a simple fluid test: pour 500 ml of saline on the pad, wait 30 seconds, weigh a dry tissue pressed on top — if it comes up wet, the SAP is short. Check the sealed edge by tugging; a weak seal leaks at the corner. And confirm the bag print matches the registration so the ward staff are not confused by two near-identical SKUs.
Frequently asked questions
What size underpad do hospitals use most?
The 60×90 cm pad is the hospital standard for incontinence and bed protection; 40×60 cm is used for procedures. Theatre and imaging tables use a 60×90 cm wing-fold version that tucks in.
Do disposable underpads need ISO 13485?
For hospital and clinical channels, yes — ISO 13485 is the medical-device quality gate most distributors require. A pad can perform well and still be locked out of tender without the cert and its traceability file.
How much SAP should a hospital underpad hold?
A 60×90 cm incontinence pad should carry 8–10 g of SAP to lock 600–800 ml. Bids that halve the SAP to hit a price tend to wet through to the sheet on the ward.
Key takeaways for disposable underpad for hospital use
- Spec SAP by capacity, not price. 8–10 g locks a real overnight void; 4 g does not.
- ISO 13485 is the clinical gate. No cert, no hospital tender.
- Sealed edge or it leaks at the corner. Tug-test before you load.
- Freight is a big share. Quote landed cost, not FOB, on a bulky light product.
- Wing fold for theatre. Stops the pad curling when patients move.
Conclusion
A disposable underpad for hospital use lives or dies on fluid lock, the sealed edge, and the certs behind it. Pin the SAP, the size and ISO 13485 in writing, fluid-test a golden sample, and the ward will not send them back. Back to the 5-niche OEM hub →
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