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Views: 0 Author: Site Editor Publish Time: 2025-09-25 Origin: Site
The Ultimate Guide to Baby Diaper Raw Materials
A Manufacturer's Handbook for Safe, Comfortable, and High-Performance Products
For baby diaper manufacturers worldwide, sourcing high-quality raw materials is the cornerstone of producing safe, comfortable, and high-performance products. The quality of these materials directly impacts a baby’s skin health, comfort, and overall well-being. Unlike materials for adult hygiene products, those for baby diapers demand stricter criteria for softness, hypoallergenicity, and leak resistance—all to protect infants’ delicate, irritation-prone skin.
At Lonsun, a trusted supplier dedicated to premium baby diaper raw materials, we believe that understanding the properties, functions, and quality standards of these materials is key to helping manufacturers create products that parents can rely on.
A: Yes. All raw materials Lonsun provides for baby diapers are medical-grade, free of fluorescent whitening agents (FWAs), formaldehyde, and latex—fully certified by global standards such as the FDA (U.S.) and OEKO-TEX®. For newborn-specific applications, we offer extra-soft spunbond-meltblown-spunbond (SMS) nonwoven fabric, designed to be gentle on delicate skin.
A: Absolutely. Lonsun supplies eco-friendly materials like biodegradable Super Absorbent Polymer (SAP) and FSC®-certified fluff pulp. These materials deliver performance on par with traditional alternatives—our biodegradable SAP can still absorb 50–280 times its own weight in liquid—while breaking down 60% faster, supporting sustainable diaper lines.
A: Common irritants include rough nonwoven fabrics, toxic adhesives, and untested SAP. Lonsun mitigates this by providing hypoallergenic SMS nonwoven fabric, medical-grade hot-melt adhesives (free of VOCs), and SAP that has passed SGS skin safety testing. Finished diapers using our raw materials have achieved a 98% “no rash” rate in parent surveys.
A: Lonsun partners with top-tier global suppliers. SAP is sourced from leading manufacturers in Japan and South Korea; Fluff Pulp from FSC®-certified forests in North America; and Hot Melt Adhesive from well-known suppliers like Fuller and Henkel. We conduct annual on-site audits to ensure compliance with our strict quality criteria.
Nonwoven fabric is the most visible raw material, forming the top sheet, back sheet, and side panels. Lonsun supplies fabrics from high-purity synthetic fibers, optimized for light weight, breathability, and ultra-softness.
Lonsun supplies spunbond-meltblown-spunbond (SMS) nonwoven fabric with a micro-porous “quick-wick” structure to pull liquid away from the skin. We also offer a "flagship specialty product": a hot air through non-woven fabric with fiber fineness reaching 0.6D, which feels as soft as a cloud and offers superior breathability.
For the back sheet, Lonsun provides a composite nonwoven fabric that combines a waterproof PE (polyethylene) film with a breathable nonwoven layer. The PE film serves as a crucial liquid barrier to prevent leaks. Unlike traditional non-breathable films, our advanced composite material allows for air circulation, effectively preventing "stuffy heat" and ensuring the baby's comfort during long wears. We supply this material in customizable roll widths (30–120cm) to fit different diaper sizes.
For leak-proof side panels, Lonsun offers stretchable nonwoven fabric blended with high-grade spandex. It provides a gentle, snug fit that blocks leaks without leaving red marks.
SAP is the core of a diaper’s absorbency, a polymer that can absorb 50–300 times its own weight in urine and turn it into a stable gel. Lonsun supplies pharmaceutical-grade SAP from top providers with three key advantages:
Rapid Absorption: Soaks up liquid in ≤3 seconds to prevent pooling.
Low Rewetting: Keeps the top sheet dry even under pressure, key for "all-night dry" diapers.
Safety & Purity: Free of heavy metals, formaldehyde, and toxic additives.
Made from softwood fibers, fluff pulp works with SAP to form the absorbent core, providing a fluffy structure that enhances performance and comfort. Lonsun supplies FSC-certified fluff pulp that undergoes rigorous impurity removal and a proprietary deodorization treatment to keep finished diapers fresh.
Essential for a secure, adaptive fit, Lonsun supplies specialized elastic solutions for key areas. Our Elastic Waistband Material offers excellent stretch recovery (≥95%), while our Leg Cuff Elastic Material uses thin, high-elasticity spandex cords to create a snug yet gentle seal against leaks.
This critical layer sits between the top sheet and core, rapidly transferring and distributing liquid evenly. Lonsun supplies high-loft nonwoven fabric for ADLs with a 3D textured surface, preventing liquid from concentrating in one area and ensuring the entire absorbent core is used efficiently.
Only medical-grade, hypoallergenic adhesives are acceptable for baby diapers. Lonsun supplies two types: Layer-Bonding Adhesives that are free of VOCs, formaldehyde, and latex, and Waist Fastener Adhesives with a "low-tack" formula that allows for easy repositioning by parents.
This closure system ensures diapers stay on securely while allowing adjustments. Lonsun supplies high-performance components, including Hook-and-Loop Fasteners with micro-hooks for gentle skin contact and strong adhesion, and tear-resistant, pressure-sensitive Tape Tabs for simpler designs.
A baby's skin is 30% thinner than an adult's. Partnering with a reliable supplier like Lonsun is critical for:
Our materials undergo third-party testing to ensure manufacturers can meet global safety standards (e.g., CPSIA, EN 14683) without costly recalls.
Soft, breathable, and safe raw materials translate to finished diapers that parents trust, giving you a competitive edge.
High-grade SAP and ADLs ensure reliable leak resistance and absorbency, boosting product loyalty.
We don’t just supply materials—we collaborate with manufacturers to solve their biggest challenges. Our advantages include:
Partner with Lonsun for the finest raw materials—backed by rigorous testing, customization, and compliance support. Your success depends on the quality you use.
Learn more about our material specifications, customization options, and sample requests.
