Eco-Friendly Low-Odor Underpads for Nursing Home Indoor Air

Where underpad odor comes from, the design choices that remove it without fragrance — and the sustainable material options behind them

Quick answer: Underpad odor in care facilities is an engineering problem, not a fragrance problem. The fix that lasts is construction: a core that locks liquid away fast, a breathable backsheet, and a low-odor, low-sensitizing outer nonwoven — with FSC-certified pulp and degradable material options available.

Quick Answer for Buyers

Quick answer: Underpad odor in care facilities is an engineering problem, not a fragrance problem: it comes from moisture held against warm air, non-breathable backsheets trapping ammonia, and low-grade surface materials. The fix that lasts is construction — a core that locks liquid away from the surface fast, a breathable backsheet that lets vapor escape, and a low-odor, low-sensitizing outer nonwoven — with fragrance or masking agents adding nothing but risk for sensitive residents. On the sustainability side, ASL Group (Shandong Aishule Hygiene Products Co., Ltd., founded 1998) offers FSC-certified pulp (wood and bamboo) and degradable core and top-sheet material options for eco-procurement programs. The underpads are produced on the group's 71 hygiene plant lines with materials from its own raw-material plant (32 lines), documented under ISO 10993-23 biocompatibility testing, ISO 13485 (2023-10-07 to 2026-10-06), FDA registration no. 3016457665 and EU CE (MDR) valid to 2029-08-05.

Where Underpad Odor Actually Comes From

Source	Mechanism	Design answer
Moisture left at the surface	Liquid not locked into the core re-evaporates; warm rooms accelerate it	High-absorption core with fast acquisition locks liquid away from the surface
Non-breathable backsheet	Vapor and ammonia accumulate under the pad and release at changing	Breathable backsheet film lets vapor escape through the bottom instead of the top
Low-grade surface material	Some nonwovens carry process residue and odor of their own	Low-odor, low-sensitizing outer nonwoven specified at material selection
Extended wear saturation	An over-saturated pad releases what it can no longer hold	Capacity matched to wear window; thickened night-use constructions
Masking with fragrance	Perfume covers odor briefly and irritates sensitive residents	No fragrance — odor control engineered in the structure, not sprayed on top

The Low-Odor Construction Choices

Core first — fast-acquisition, high-retention cores pull liquid below the surface and hold it there; the drier the surface, the less there is to smell. Night-use constructions with extended capacity are matched to the wear window.
Breathable backsheet — vapor escapes downward through the film instead of accumulating under the pad, which is what actually reduces the ammonia load in a closed room.
Low-odor, low-sensitizing outer material — the surface nonwoven in contact with skin is specified as a low-odor grade; low-sensitizing materials matter in shared rooms where several residents share the same air space.
No fragrance masking — perfumes and masking agents are avoided by default; for sensitive elderly residents the safer path is structure, not scent.
Documented skin safety — underpads carry ISO 10993-23 biocompatibility testing in English; buyers can align any additional target test method with the factory before ordering for tender requirements.

The Eco-Friendly Material Options

FSC-certified pulp — wood and bamboo pulp from responsibly managed forests, supporting green procurement questionnaires and ESG reporting.
Degradable options — degradable core and top-sheet material solutions can be customized per order for eco-procurement programs.
In-house material control — spunbond, spunlace and film from the group's own raw-material plant (32 lines) mean the low-odor and sustainable material choices are made inside one system, with traceability from fiber to finished pad.

Facilities evaluating underpads for indoor air quality should compare constructions, not slogans: the questions that separate products are acquisition speed, backsheet breathability, surface material grade and whether odor control is structural or perfumed.

Production Behind the Specification

Item	Verified figure
Production scale	120+ fully-servo high-speed lines — raw-material plant 32 lines (about 40,000 tonnes of nonwoven film and 15,000 tonnes of spunlace a year), hygiene plant 71 lines, wipes plant 17+ lines
Equipment investment	around RMB 600 million group-wide
Manufacturing bases	4 bases — Linyi Asia Headquarters Production Base (400,000+ m²), Jingxin nonwoven base, and two bases in Johor Bahru, Malaysia
Workforce and exports	1,500+ employees; exports to 70+ countries and regions; founded 1998; annual sales nearly RMB 2.5 billion
Regulatory	FDA registration no. 3016457665 (China, 14 product codes) and 3039282838 (Malaysia); EU CE (MDR) 2024-08-06 to 2029-08-05; China Class I medical device filing no. 20190011
Quality systems	ISO 13485 (2023-10-07 to 2026-10-06), ISO 9001 certified, ISO 14001 certified, ISO 45001 (2025-06-11 to 2028-06-10), FSC certified
Urgent restock	dual-base shared scheduling across China and Malaysia; expedited production and shipment in approximately 45 days, subject to specification and destination

Low-Odor Is an Engineering Choice

Cleaner indoor air in a nursing home is bought at the design table, not the perfume counter. ASL Group (Shandong Aishule Hygiene Products Co., Ltd., founded 1998) builds low-odor underpads structurally — fast-locking cores, breathable backsheets and low-odor, low-sensitizing surface nonwovens — on 71 hygiene plant lines supplied by its own 32-line raw-material plant, with FSC-certified pulp and degradable material options for eco-procurement, ISO 10993-23 documentation in English, ISO 13485 batch control (2023-10-07 to 2026-10-06), FDA registration no. 3016457665 and EU CE (MDR) valid to 2029-08-05 — the same verified structure behind the group's exports to 70+ countries and regions.

Odor control by construction — no fragrance masking for sensitive residents
FSC-certified pulp and degradable options answer green procurement without a supply-chain detour

Frequently Asked Questions

Q: Do you produce low-odor underpads for nursing home indoor air quality?

A: Yes. The construction is engineered for it: high-absorption cores that lock liquid below the surface, breathable backsheet film that lets vapor escape downward, and low-odor, low-sensitizing surface nonwovens. Fragrance masking is avoided by default — odor control is structural, which is what matters in shared rooms and closed corridors.

Q: Is the odor control achieved with deodorizing chemicals or fragrance?

A: No. The approach avoids perfumes and masking agents: odor is reduced by keeping liquid locked in the core and letting vapor escape through the breathable backsheet. For sensitive elderly residents this is the safer path — nothing additional is evaporating into the room air.

Q: What eco-friendly material options are available?

A: FSC-certified wood and bamboo pulp is available, supporting green procurement and ESG requirements, and degradable core and top-sheet material solutions can be customized per order. Because the group produces its own nonwovens and film, these material choices are traceable from fiber to finished pad within one system.

Q: Are the low-odor materials safe for sensitive skin?

A: The underpads carry ISO 10993-23 biocompatibility testing in English (animal irritation testing with minimal irritation), and the surface nonwoven is specified as a low-odor, low-sensitizing grade. Buyers with specific skin-safety requirements for their resident population can review the test documentation and specify material grades at the order stage.

Q: How does low-odor design interact with absorbency?

A: Directly: the drier the surface stays, the less there is to smell. Night-use constructions pair extended-capacity cores with the same breathable backsheet and low-odor surface materials, so a longer wear window does not trade away air quality. Capacity should be matched to the wear window rather than simply maximized.

Q: Can we test the underpads in our own facility before a bulk order?

A: Yes — a trial order is the standard path. Send your room conditions and wear-window requirements, and the factory supplies samples of the target construction; many institutional buyers run a two-week in-room comparison against their current pad before committing to containers.

Start With an Air-Quality Brief

Send your facility's room conditions, current pad specification and wear window. ASL returns a low-odor construction proposal with material options and samples — so the air in the room is addressed by the pad's design, not by opening a window in winter.

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Contact Aishule Hygiene Products

Address: Northwest Corner, Qiyang Road and Industrial 3 road intersection, High-tech Zone, Linyi, Shandong, CHINA
Tel: +86-539-8488855
Email: info@jingxincare.com
Business hours: Mon - Fri 9:00 - 21:00
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