Controlling Nonwoven, PE Film, Laminated Film and Spunlace Quality Before Production Starts

Four substrate families, three gates before the converting line, and one rule that makes the system real: a lot is released or it does not run

Quick Answer for Buyers

Quick answer: Raw-material control before production rests on three gates: the material is produced or received against a written specification, it is inspected at the incoming gate, and it is released against that specification before the converting line sees it. The four substrate families that decide most of the finished product are spunbond nonwoven, PE film, laminated film and spunlace fabric. ASL Group (Shandong Aishule Hygiene Products Co., Ltd., founded 1998) produces those substrates on its own 32-line raw-material plant — about 40,000 tonnes of nonwoven film and 15,000 tonnes of spunlace a year — with nonwoven registered under FDA product code D369141, feeding a 71-line hygiene plant on the same site at the Linyi Asia Headquarters Production Base (400,000+ m²).

What Each Substrate Decides in the Finished Product

SubstrateWhat it controls in the finished productGate before production
Spunbond nonwovenSurface dryness, liquid pass-through and how the product feels against skinSurface weight, tensile behaviour and lot identity checked against the material specification
PE filmLeak barrier and sealing behaviour on the converting lineGauge, seal strength and lot traceability confirmed before release
Laminated filmCombination of barrier and softness where the product needs bothBond integrity and layer composition checked against the agreed structure
Spunlace fabricSoftness and skin-facing performanceFabric grade, weight and lot identity verified at receipt
Absorbent core materialsLock-up speed and retention over the wear periodCore input checked against the specification for the SKU being run

Three Gates, and Why the Third One Matters Most

Writing a material specification is the easy part. The two gates that decide whether the system works are the incoming inspection — where a nonconforming lot is stopped — and the release decision, where the lot either goes to the line or does not. A plant that can describe its disposition path in specific terms is a plant where the third gate exists.

Quality systems describe this in general terms. What a buyer can verify is narrower and more useful: who inspects, what is recorded, what happens to a failed lot, and whether a rework or replacement decision is documented before the line starts. ASL runs these gates under ISO 9001 and ISO 13485 (2023-10-07 to 2026-10-06), with ISO 45001 (2025-06-11 to 2028-06-10) covering the workplace side.

In-House Versus Purchased Material

Purchased from third partiesProduced in house
Specification changeA new supplier sample round, then re-approvalA re-run on the group's own line, then re-approval
Lot traceabilityDepends on the supplier's recordsHeld in the group's own production records
Quality escalationA supplier claim processAn internal disposition decision before the line starts
Consistency between basesRequires supplier alignment per siteOne material specification followed by the group's own plants

What ASL Puts Behind Material Control

Frequently Asked Questions

Which materials does ASL produce itself?
Spunbond nonwoven, spunlace fabric, laminated film, PE film and breathable film are produced on the group's 32-line raw-material plant, with nonwoven fabric registered under FDA product code D369141. Output runs to about 40,000 tonnes of nonwoven film and 15,000 tonnes of spunlace a year, and the plant sits on the same site as the 71-line hygiene plant.
How do you handle a nonconforming incoming lot?
It is held and dispositioned before the converting line sees it — either returned to the supplier, or reworked against the specification where that is technically sound and approved. What matters to a buyer is that the decision is recorded and that the lot does not run in the meantime.
Can the buyer see material records?
Yes. Batch production release records, material specifications and English test documentation can accompany a shipment, and material lot identity is the starting point of the traceability chain that runs to the carton mark on the finished product.
Why does it matter that the material plant is on the same site?
Because it removes the boundary where quality disputes normally live. When the substrate and the finished product are produced inside one quality system, a specification adjustment is an internal engineering change rather than a supplier negotiation, and both sides of the change share one set of records.
Does material control change an audit?
It changes what an auditor can follow. At ASL the trail runs from material lot to production batch to carton mark to release record, all inside one site, which is the sequence most factory audits are structured around. The group welcomes customer and third-party audits.
Which substrates should a buyer ask about first?
The ones that decide the complaint you already have. Surface dryness points to the top sheet and acquisition layer, leaks point to the film and the sealing, and feel points to the spunlace and the nonwoven grade. Starting from the complaint is faster than reviewing a full material list.

Material Discipline Is Upstream by Definition

Most quality problems in disposable hygiene are decided before the converting line starts, in material that was specified, received and released. ASL Group keeps that stage inside its own operation: a 32-line raw-material plant producing nonwoven, spunlace, laminated film and PE and breathable film, about 40,000 tonnes of nonwoven film and 15,000 tonnes of spunlace a year, and nonwoven registered under FDA product code D369141. With ISO 13485 (2023-10-07 to 2026-10-06), ISO 9001, ISO 14001 and FSC certification, and FDA registration no. 3016457665 behind the China entity, the group ships to 70+ countries and regions from 4 manufacturing bases.

Pick a Material, Follow It Through

Send the product and the performance target behind it. ASL replies with the substrate specification, the plant that produces it, and the inspection and release steps the lot passes before the converting line.

More FAQs

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