A disposable baby diaper OEM factory is judged by specs most buyers never see: SAP grammage, topsheet, backsheet, leg elastic and the leakage tests behind them. This guide breaks down the specs that decide whether a diaper actually performs.

Two diapers can look identical on the shelf and feel completely different on a baby. The gap is in the spec sheet, and a good disposable baby diaper OEM factory can show you exactly where the money and the performance went. Here's what to read on that sheet before you approve a bulk run.

SAP and fluff: the absorbent core

The core is SAP (superabsorbent polymer) plus fluff pulp. More SAP means higher capacity in a thinner core, but too much makes it stiff. We spec grammage per size and test SAP core performance with AUL and rewet tests. A disposable baby diaper OEM factory that won't share grammage numbers is one to avoid.

Topsheet and backsheet

The topsheet is the soft nonwoven next to skin — "dry touch" means low rewet so urine stays away. The backsheet is the breathable PE film; cloth-like backsheets feel premium but cost more. Our certifications guide notes OEKO-TEX for film safety; verify via OEKO-TEX Standard 100.

Elastic and the leak barrier

Leg cuff elastic and the standing barrier are where leaks are won or lost. Servo lines hold tension consistently; older mechanical lines drift. See our capacity data and factory vetting checklist. A factory with an in-house lab proves these specs per batch.

Tests that prove performance

Rewet, leakage, AUL and pH are the four we report. For the science, see absorbency science. If your disposable baby diaper OEM factory can't show a recent lab report, that's the red flag, not the price.

How we work (editorial transparency)

We're a disposable baby diaper OEM factory operating since 1994 — our story. We'd rather show you the lab report than a glossy sample. Buyers' top questions:

Frequently asked questions

What spec matters most?

SAP grammage and rewet — they decide capacity and dryness. Everything else is secondary to those two.

Cloth-like or PE backsheet?

Cloth-like feels premium and breathes better; PE is cheaper and fully waterproof. Match to your price point.

How do I verify the spec?

Ask for a per-batch lab report (rewet, leakage, AUL) and an in-house lab walk.

More SAP means better?

Up to a point — too much stiffens the diaper. Balance SAP with fluff for softness and speed.