Two quotations for "adult diapers, size M, 10 pcs/bag" can differ by 25% — and both suppliers are quoting honestly. The difference sits in the specification: core weight, polymer ratio, backsheet type and absorbency tier are where the cost lives, and none of them appear in a one-line quote. For a distributor buying from an adult diapers wholesale supplier, the skill that protects margin is reading spec sheets, not negotiating harder. This guide goes through the specifications line by line: what each number means, how it is tested, and which differences justify a price gap.
The Product Families and What Defines Each
| Product | Format | The specs that define it |
|---|---|---|
| Tape diapers (briefs) | Open style, refastenable side tapes | Absorbency tier, core weight, backsheet type, tape system |
| Pull-up pants | Underwear style, tear-away sides | Absorbency tier, waist elastic count, side-panel softness |
| Two-piece systems | Insert pad + washable fixation pants | Pad capacity and shape, pant reuse cycles |
| Underpads (bed pads) | Flat pads, typically 60×60 / 60×90 cm | Size, total absorbency, fluff vs SAP core, backing slip resistance |
| Booster pads | Thin pads worn inside another product | Capacity added, flow-through design |
A wholesale catalog usually tiers each family into day and night versions, and into economy, standard and premium grades. The families share materials and factories, so the specification logic below applies across all of them.
Absorbency: The Headline Number, Read Correctly
Absorbency is quoted in grams or millilitres per piece, and the laboratory reference behind it is ISO 11948-1, the "Rothwell method": the whole product is saturated in test solution, drained, and weighed. Two things matter when comparing these figures.
First, ISO 11948-1 measures total capacity — a laboratory ceiling. Practical working capacity in use is substantially lower, which is why a serious factory tiers its range (for example day products against higher-capacity night products) instead of selling one "maximum absorbency" SKU. If two factories quote the same product family with very different capacity figures, ask each which test method the number comes from before concluding anything.
Second, capacity alone does not describe performance. Ask for two more numbers: rewet (how much liquid presses back to the surface under load — lower is better, and it drives skin condition) and acquisition time (how fast liquid is pulled away on repeated insults). A high-capacity core with poor rewet performs worse on a resident's skin than a mid-capacity core with a good acquisition layer.
Inside the Core: Where the Cost Differences Live
The absorbent core is fluff pulp blended with superabsorbent polymer (SAP), usually wrapped with an acquisition/distribution layer above it. The specification points to compare:
- Core weight (g) — the total mass of pulp + SAP; the single biggest cost driver
- SAP share — SAP absorbs many times its weight and locks liquid in; a higher SAP ratio makes a thinner product with equal or better capacity, at higher material cost
- Core construction — uniform cores are standard; channeled cores distribute liquid better and keep their shape when saturated
- Integrity when wet — ask how the core behaves after saturation; clumping and breaking are common complaints with economy grades
A supplier who quotes core weight and SAP share openly is giving you the numbers you need to compare like for like. One who answers "high quality SAP, very absorbent" is asking you to buy adjectives.
Backsheet, Topsheet and Fit Features
Backsheet. The outer layer is either plain PE film (economy lines) or a breathable cloth-like laminate (standard in most developed markets). Breathability is a skin-health specification, not a comfort extra — occlusive films trap humidity against the skin during long wear. Expect the cloth-like version to carry a visible price premium and to be worth it in any care-channel tender.
Topsheet and contact layers. A soft hydrophilic non-woven that moves liquid downward; ask for pH-friendly contact layers and, where available, dermatological test reports and OEKO-TEX certified raw materials.
Fit and fastening. Leakage complaints are usually fit problems. Compare: refastenable tapes that still hold after repositioning, elastic waistbands, leg cuffs with standing gathers, and on pants, the number of waist elastics and side-panel breathability. A wetness indicator — the printed stripe that changes color — is a small feature that care staff genuinely use; confirm it is included at the tier you are buying.
Sizing: Publish the Chart, Not Just the Letters
Adult products are sized by waist/hip measurement, typically S–XXL with M and L carrying most volume. Size letters are not standardized across factories — one maker's L is another's XL — so put the centimetre ranges on your own packaging and compare factories by the chart, not the letter. For a stocking program, plan at least two sizes per product family; care channels usually need three.
Regulatory Status: It Depends on the Market and the Claims
Classification differs by destination, and it changes what documents you need:
- EU: absorbent incontinence products placed on the market for a medical purpose are commonly CE-marked as Class I medical devices under the MDR — self-declared, with a Declaration of Conformity and technical file behind it.
- US: protective garments for incontinence fall under 21 CFR 876.5920 as Class I devices, exempt from 510(k) — but establishment registration and listing still apply.
- Many other markets treat them as general consumer hygiene goods, where chemical-safety and labeling rules apply instead.
Decide the market before the artwork: the claims you print determine the compliance file you must hold. For the wider document set — DoC, ISO 13485, test reports, free sale certificates — see our import paperwork checklist.
Comparing Quotes: The Minimum Spec Sheet to Demand
Before comparing prices, get this table filled in per SKU: product type and size with cm range; total absorbency (method stated); rewet and acquisition data; core weight and SAP share; backsheet type; tape/elastic features; wetness indicator yes/no; bag count and carton quantities; and the compliance position for your market. Two quotes with this table beside each other explain their own price difference — and pre-shipment inspection can then verify the goods against the same sheet, sampling each production lot by AQL with grammage and absorbency spot checks.
Packaging and Container Planning
Incontinence products are light but bulky, so freight planning is about cube. Bag counts (10/12/20 pcs) and compression settings change carton volume meaningfully — ask for the loading plan per SKU. Most distributors buy the category as part of a mixed container alongside other consumables rather than committing a full box to one line.
For private label, printed packaging film is the MOQ driver, with first branded orders typically planned at container level; neutral packaging ships in smaller mixed quantities.
FAQ
What absorbency should a night product have?
Night briefs sit in the higher tiers of a factory's range with low rewet as the number to watch. Rather than fixing on one figure, ask for the range's tier table with ISO 11948-1 data and trial the top tiers with real users before committing volume.
Is a cheaper, fluff-heavy core a false economy?
Often, yes: lower SAP share means a thicker, heavier product that clumps when wet — which shows up later as complaints and switching. Match the core grade to the channel: economy grades have a legitimate market, but care-home tenders usually justify standard and premium cores.
Do adult diapers need CE marking?
In the EU they are commonly CE-marked as Class I medical devices when sold with a medical purpose; in the US they are Class I and 510(k)-exempt; elsewhere they are often consumer hygiene goods. Confirm the destination market's position before printing packaging.
How should I evaluate samples beyond reading the datasheet?
Weigh them (core weight is verifiable at home), pour-test for acquisition and rewet with a standard volume, wear-test for fit on different body shapes, and check tape re-fastening on the actual backsheet. Ten minutes with a scale and a jug catches most datasheet exaggerations.
Building or upgrading an adult care line? Send us your target market, channel and current spec sheet — we'll return a tiered specification comparison, absorbency data and a container plan within 24 hours. → Contact HOPE Medical