TPU Hot Melt Adhesive Web is a non-woven thermoplastic polyurethane membrane produced through a specialized melt-blown process that results in a multi-layered, fibrous mesh structure. Unlike solid Bonding film, the web configuration maintains the inherent breathability of substrates while providing high elastic recovery (typically >200% elongation) and a soft hand-feel. It is engineered to activate within a temperature range of 90°C to 150°C, facilitating high-performance adhesion between diverse materials such as Lycra, nylon mesh, and synthetic leather without compromising the mechanical flexibility of the final composite.
Mechanical Performance and Material Specifications
The selection of TPU web is primarily driven by its unique combination of shore hardness and thermal viscosity. For high-stretch apparel and footwear applications, the material must maintain structural integrity under repeated cyclic loading.
Request a technical datasheet or a 5-meter sample roll for your lamination trials.
Comparative Technical Data: TPU Web Specifications
The following parameters represent the standard industrial range for WithTech TPU Hot Melt Web products used in Tier-1 supply chains:
| Parameter | Industrial Standard Range | Testing Method |
| Melting Point | 90°C – 150°C | DSC (Differential Scanning Calorimetry) |
| Weight (gsm) | 8g/m² – 120g/m² | Electronic Balance / ISO 3801 |
| Elongation at Break | 200% – 600% | ASTM D638 |
| Peel Strength | 25N – 55N / 25mm | ISO 11339 (T-Peel Test) |
| Shore Hardness | 80A – 95A | ASTM D2240 |
| Width Availability | 10mm – 3000mm | Precision Slitting |
Core Technical Advantages in Industrial Applications
1. Superior Elastic Recovery
TPU webs are distinguished by their high modulus and recovery rates. In seamless sportswear manufacturing, the adhesive layer must stretch in tandem with the base fabric. Our TPU formulations ensure that after an elongation of 100%, the residual deformation is restricted to <5%, preventing the "bagging" effect in joint areas.
2. Porosity and Air Permeability
The non-woven mesh structure ensures that air and moisture vapor can pass through the bonding interface. This is critical for performance footwear uppers where localized reinforcement is required without creating thermal barriers. The air permeability is typically maintained at >500 mm/s depending on the gsm selected.
3. Precision Hot-press bonding
Thermal activation occurs rapidly. Under a nip pressure of 3-5 bar and a dwell time of 10-20 seconds, the TPU fibers transition into a low-viscosity state, penetrating the substrate's fiber interstices to create a mechanical-chemical interlocking bond.
Primary Application Scopes
Seamless Apparel: Bonding of cuffs, hems, and zippers in waterproof jackets.
Automotive Interiors: Lamination of headliners and door panel fabrics where low VOC emissions are mandatory.
Footwear: Internal reinforcement of fly-knit uppers and insole lamination.
Industrial Filtration: Multi-layer mesh bonding for high-efficiency air filters.
FAQ
Q1: What is the MOQ for custom-width TPU Adhesive Web?
For standard stock gsm (15g-30g), the MOQ is 1 roll (typically 200-500 meters). For custom widths or specialized melting points, the MOQ is 3,000 square meters to ensure production line stabilization and thickness uniformity.
Q2: How does TPU web compare to PA web in terms of wash resistance?
TPU offers superior hydrolysis resistance compared to PA. It maintains tensile strength and bonding integrity even after 50 cycles of 60°C industrial laundering, making it the preferred choice for heavy-duty workwear and outdoor gear.
Q3: Can WithTech provide GRS and Oeko-Tex certification for these webs?
Yes. All our TPU [Insert Link: Hot Melt Web] products are Oeko-Tex Standard 100 certified. We also supply GRS (Global Recycled Standard) versions utilizing post-industrial recycled TPU, accompanied by full Transaction Certificates (TC).
