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| Customization: | Available |
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| Application: | Construction, Packing, Diaper |
| Bonding Function: | Structural Adhesive |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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PRODUCT DETAILS
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item
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value
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Toxicity
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None
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Composition
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Synthetic Resins
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Model
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8822/8106/895
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Place of Origin
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China
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Classification
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Hot Melt Adhesives
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Main Raw Material
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Other
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Usage
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Packing
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Packaging
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20 Kg/box
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Appearance
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Solid
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Colour
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Transparent/Yellow
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Shelf Life
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Shelf Life
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Packaging
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20 Kg/box about 1Kg/cake, wrapped with fusible films
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Baby Diaper Glue, more accurately known as Hot Melt Adhesive (HMA) or Pressure-Sensitive Adhesive (PSA), is a critical component in the manufacturing of disposable diapers. It is a thermoplastic, solvent-free adhesive that is applied in a molten state and forms a bond upon cooling. This "invisible" material is responsible for holding the complex, multi-layered structure of a diaper together, directly impacting its integrity, performance, and comfort.
Without advanced adhesive systems, modern, high-performance diapers as we know them would not be possible.
HMA is used in nearly every part of the diaper assembly:
| Application Area | Specific Function |
|---|---|
| Construction / Lamination | Bonding the layers together: the Top Sheet (non-woven), Absorbent Core (fluff & SAP), and Back Sheet (PE film). |
| Elastic Attachment | Securing the leg elastics and waist elastics to the non-woven materials, creating the crucial leak-guard cuffs. |
| Core Stabilization | "Locking" the fluff pulp and Super Absorbent Polymer (SAP) in place within the core to prevent shifting and clumping (Anti-Bunching). |
| Fastening System | Used in the assembly of hook-and-loop tabs (e.g., Velcro®-style closures) and adhesive tapes. |
| Standing Leg Cuffs | Providing the initial "pop-up" structure for inner leg barriers. |
To perform in such a demanding product, diaper adhesives must possess a unique set of properties:
High-Tack & Fast Setting: Must grab quickly on high-speed production lines (often exceeding 500 diapers/minute).
Strong Adhesion: Create a durable bond between dissimilar materials (e.g., polyolefin film and non-woven fabric).
Softness & Flexibility: The adhesive line must remain flexible and not become brittle, ensuring the diaper is soft and moves comfortably with the baby.
Resistance to Water & Body Fluids: Bonds must not break down when exposed to urine or moisture.
Breathability (for specific types): Some HMAs are formulated to be micro-porous, allowing for the construction of breathable laminates.
Safety & Compliance: Must be non-toxic, hypoallergenic, and free from harmful substances (compliance with EU Toy Safety, FDA, REACH, etc. is mandatory).
The base polymer defines the adhesive's characteristics:
| Type | Pros | Cons | Common Uses |
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| SBS (Styrene-Butadiene-Styrene) | Cost-effective, high tack, good adhesion. | Lower resistance to heat and oxidation (can yellow). Can be too stiff. | Core stabilization, some lamination. |
| SIS (Styrene-Isoprene-Styrene) | Softer, more flexible, excellent tack. Good low-temperature performance. | Moderate heat resistance. | Elastic attachment, ideal for leg cuffs where softness is critical. |
| APAO (Amorphous Poly-Alpha-Olefin) | Excellent heat & aging resistance, good water resistance, very clean (colorless). | Higher cost, lower tack. | Lamination of backsheet and topsheet, where a clean appearance and durability are key. |
Most commercial diaper adhesives are blended formulations, combining these polymers with:
Tackifiers: To increase stickiness.
Plasticizers/Oils: To adjust viscosity and flexibility.
Antioxidants: To prevent thermal degradation.
Odor Control: Development of low-odor and odor-neutralizing adhesives for a "cleaner" feel.
Plant-Based & Renewable Materials: Exploration of bio-based tackifiers and polymers to improve sustainability.
Application Technology: Advanced, non-contact spray systems (e.g., spiral spray) that use less adhesive while providing better coverage and softer hand-feel.
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