Breathable Film Backsheet for Diaper and Hygiene Products
This breathable film backsheet looks like a plastic film, but it is actually a breathable microporous film, and the micropore structure is the most critical part. Since the minimum diameter of water droplets is 20µm, the diameter of water vapor molecules is 0.0004µm, and the diameter of the micropores sits right in between, the material is guaranteed to be breathable while remaining impermeable to water.
It is supplied by WEIHONGLAI as a diaper raw material for disposable hygiene-product manufacturers, and is suitable for purchasing, technical, quality, production, and supply-chain evaluation before sampling or line trials.
Key Features and Configuration Highlights
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Excellent breathability with high elongation and an extra-soft hand feel, safe for sensitive skin.
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Free from chemical agents.
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Micro-porous composite structure that allows water vapor molecules and air to pass through while restricting liquid flow, helping to avoid red buttocks.
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Composition: Polyethylene, CaCo3.
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Basic weight: 15–35 gsm.
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Width: 50 mm–2300 mm.
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Colors: printing up to 6 colors.
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Loading quantity: 20–23 tons per 20GP.
Verified Specification Reference
The values below are the confirmed reference data for this breathable film backsheet. Final specification is to be confirmed against your target product and line requirements.
Composition Polyethylene, CaCo3
Basic Weight 15–35 gsm
Width 50 mm–2300 mm
Colors Printing up to 6 colors
Loading Quantity 20–23 tons / 20GP
Quality Checkpoints and Test Evidence
The following inspection data supports buyer review of grammage, tensile strength, elongation, and water vapor transmission before a trial order.
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Properey
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Grammage (g/m2)
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Tensile strength MD(N/25mm)
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MD Elongation(%)
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Tensile strength CD(N/25mm)
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CD Elongation(%)
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WVT
（g/24h/m²）
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Sample Size
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100cm2
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2.5cm*20cm
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2.5cm*20cm
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2.5cm*20cm
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2.5cm*20cm
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8cm*8cm
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Sample Number
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5
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5
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5
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5
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5
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4
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Target
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20.0
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≥5
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≥100
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≥2
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≥200
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1600-3200
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Average
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20.4
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8.1
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240.0
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2.7
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471.0
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2127
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Method
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ASTM D 3776
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ASTM D 5035-95
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ASTM D 5035-95
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Application and Compatibility
This breathable film backsheet is positioned as the outer backsheet layer in disposable hygiene products, where breathability and liquid barrier must work together. It is compatible with baby diaper, sanitary napkin, adult incontinence, and underpad production, and can be evaluated alongside related backsheet options such as breathable laminated PE film backsheet.
For production-line planning, confirm the target grammage, width, and print layout against your converting process before a trial run. Buyers can also review the diaper raw materials video for a closer look at material handling and application.
Sampling and Next Step
To move from evaluation to a line trial, share your target grammage, width, color or print requirement, and intended hygiene product. WEIHONGLAI can then confirm the suitable specification and sampling arrangement for your project.
Download Product Catalog or send your inquiry with the required specification so the sales and technical team can respond with the matching backsheet option.
FAQ
What is the basic weight range of this breathable film backsheet?
The confirmed basic weight range is 15–35 gsm.
What width can be supplied?
The confirmed width range is 50 mm–2300 mm.
How does the film stay breathable but waterproof?
The micropore diameter sits between the diameter of water vapor molecules (0.0004 µm) and the minimum diameter of water droplets (20 µm), so vapor and air can pass while liquid flow is restricted.
What is the loading quantity?
The confirmed loading quantity is 20–23 tons per 20GP.
Email: info@whldiapernonwoven.com
MP/WhatsApp: +86-13599937366
Manufacturer Address:Room 1105B, Bld M1, Manhattan, Yulongwan, Shimao, Shuanglong Road, Meiling Street, Jinjiang, Fujian, China
