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Email: vomeltsales@163.com | Phone: +86 17712662793
No. 36 Zhonglu Development Zone, Pingwang Town, Wujiang District, Suzhou City, Jiangsu Province
Engineered Melting Ranges for Optimal Thermal Bonding
Our hot-melt adhesive films offer precisely calibrated melting ranges from 60°C to 170°C. Whether you are bonding heat-sensitive materials or requiring high-temperature industrial resilience, hrs provides the exact thermal profile to ensure absolute process stability and flawless lamination.
Core Principle of Melting Temperature
The melting temperature range of hot melt adhesive is fundamentally determined by the crystallinity and molecular structure of the polymer material. Understanding this ensures optimal bonding across various industrial applications.
Low-Temperature Materials
Low Crystallinity
Characterized by molecular chains that soften easily under mild heat. These materials are perfectly engineered and highly suitable for heat-sensitive fabrics, preventing material distortion or damage during the lamination process.
High-Temperature Materials
Dense Crystallinity
Featuring strong molecular stability, these adhesives require high temperatures for complete melting. This ensures deep penetration to achieve uncompromising physical anchoring and chemical bonding for heavy-duty industrial demands.
Core Production Logic
The adhesive must reach its complete melting range to activate true bonding performance. Reaching only the onset temperature causes merely "surface softening", resulting in false bonding.
This is the root cause of mass production delamination and wash failure.
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Material Temperature Gradient Classification & Selection Guide
All products are divided into four temperature gradients according to melting range, suitable for different fabric heat resistance and production equipment conditions.
| Temperature Gradient | Temperature Range | Materials Included | Suitable Fabrics/Scenarios | Characteristics |
|---|---|---|---|---|
| Low‑Temperature Series | 90℃–120℃ | EVA film/mesh, low‑temp TPU, TPE, PP mesh | Nylon, chiffon, ultra‑thin knits, printed fabrics, easily scorched fabrics | Low‑temp activation, no fabric scorching, fast forming; only for low‑frequency washing, general lamination |
| Medium‑Temperature Series | 110℃–135℃ | PA film/mesh, standard TPU | Cotton, polyester, blends, home textiles, apparel accessories, hats & footwear | Balanced bonding, soft hand feel, rub‑resistant; best overall value |
| High‑Temperature Series | 120℃–145℃ | PES film/mesh, PO/EAA, high‑temp reinforced TPU | Outdoor fabrics, workwear, medical, high‑standard washing, inert/hard‑to‑bond fabrics | Complete molecular melting, extremely strong anchoring, hydrolysis & saponification resistant – no failure under high‑temp washing |
| Special Low‑Temp Shaping Series | 100℃–120℃ | TPU/PU waterproof dispensing film | Precision dot‑structured products | Low‑temp shaping protects dot structure – no dot collapse or pore blockage, preserves waterproof/breathable function |
Full Series Product Melting Temperature Range Overview
Comprehensive thermal property specifications for hrs industrial adhesives, ensuring precise matching for your manufacturing processes and fabric heat resistance standards.
Hot Melt Adhesive Film Series
Versatile continuous films for broad lamination applications.
| Product Name | Melting Range | Temperature Characteristics & Process Notes | Suitable Applications |
|---|---|---|---|
| TPU Hot Melt Adhesive Film | 95℃ – 145℃ | Wide range, multiple grades; balanced melt flow, high elastic retention, not prone to glue bleed | Stretch apparel, underwear, sports fabrics, hats & footwear, high‑frequency wash textiles |
| TPE Hot Melt Adhesive Film | 100℃ – 130℃ | Medium‑low temp, fast melting, soft hand feel; high temp may cause softening/reflow | Home textiles, ordinary knitted fabrics, low‑frequency wash soft composites |
| PA Hot Melt Adhesive Film | 110℃ – 135℃ | Stable melting, strong anchoring, fast curing, rub‑resistant | Various apparel, home textiles, general functional fabric lamination |
| PES Hot Melt Adhesive Film | 125℃ – 145℃ | High temp, dense molecular structure, extremely high bond strength, hydrolysis & saponification resistant | Outdoor fabrics, workwear, medical supplies, high‑temp washing, export quality products |
| EVA Hot Melt Adhesive Film | 90℃ – 120℃ | Low temp, easy lamination, fast forming; poor high‑temp & alkaline resistance | Disposable products, low‑frequency wash ordinary fabrics, packaging composites |
| PO/EAA Hot Melt Adhesive Film | 120℃ – 140℃ | High temp stable, strong polar adhesion, resistant to moisture & acid/alkali | Special material composites, outdoor durable products, acid/alkali‑resistant washing |
Hot Melt Adhesive Mesh Web Series
Breathable, non-woven web structures for flexible bonding.
| Product Name | Melting Range | Temperature Characteristics & Process Notes | Suitable Applications |
|---|---|---|---|
| PA Hot Melt Adhesive Mesh Web | 110℃ – 135℃ | Uniform melting, good dot integration, combines breathability with bond stability | Underwear, bedding, skin‑friendly textiles, daily breathable composites |
| PES Hot Melt Adhesive Mesh Web | 125℃ – 145℃ | High‑temp melting, strong grid bonding, not prone to delamination under high‑temp washing | Outdoor functional fabrics, durable home textiles, high‑frequency breathable composites |
| TPU Hot Melt Adhesive Mesh Web | 95℃ – 130℃ | Wide range, excellent elasticity, follows fabric dynamic deformation, fatigue resistant | Sportswear, stretch knits, wearable flexible products |
| EVA Hot Melt Adhesive Mesh Web | 90℃ – 120℃ | Low‑temp fast melting, cost‑effective; not suitable for high‑temp or repeated washing | General bags, affordable civilian breathable composites |
| PP Hot Melt Adhesive Mesh Web | 105℃ – 125℃ | Medium‑low temp stable, tight grid, good water resistance | Windproof fabrics, civilian protective textiles, general breathable composites |
Special Functional Film Series
Engineered for specific environmental resistances and structural integrity.
| Product Name | Melting Range | Temperature Characteristics & Process Notes | Suitable Applications |
|---|---|---|---|
| TPU/PU Waterproof Dispensing Film | 100℃ – 120℃ | Dedicated low‑temp melting, protects dot structure – no dot collapse or pore blockage | Outdoor waterproof apparel, rainwear fabrics, protective gear composites |
Custom Processing Service Temperature Adaptability
Tailored R&D manufacturing to match your exact production parameters.
| Custom Service | Temperature Adaptability & Processing Advantages |
|---|---|
| OEM Processing | Adaptable to full range 90℃‑145℃; custom process according to fabric heat resistance and test standards; supports high/low temp special conditions |
| Laminating & Back Coating Services | Precisely matches melting ranges of all adhesive materials; uniform temperature control across full area – eliminates local insufficient melting or over‑melt glue bleed |
| Dispensing and Coating Services | Low‑temp precision melting shaping, protects fine adhesive structures; temperature error controllable – avoids dot collapse or false adhesion |
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Melting Temperature Guidelines
A comprehensive engineering reference relating melting temperatures to materials, equipment, and processes for optimal hot-melt adhesive performance.
Fabric Heat Resistance Quick Reference
Matching adhesive melting points with fabric tolerances to prevent thermal damage.
| Fabric Type | Max Heat Resistance | Recommended Temp Gradient | Recommended Adhesive | Risk Notes |
|---|---|---|---|---|
| Nylon 6/6.6 (ultra‑thin knit) | 120℃ (short term) | Low: 90-110℃ | EVA film/mesh, low‑temp TPU | Above 120℃ causes yellowing, shrinkage, melting |
| Chiffon, silk | 100℃ | Low: 90-105℃ | EVA low‑temp film, TPU low‑temp film | Medium/high temp will scorch |
| Spandex (stretch fabric) | 130℃ | Med-Low: 95-120℃ | TPU film/mesh | High temp causes loss of elasticity, stiffening |
| Cotton, linen | 180℃ | Medium: 110-135℃ | PA film/mesh, standard TPU | Good tolerance, but avoid scorching |
| Polyester (standard) | 200℃ | Med-High: 120-145℃ | PA, PES, PO/EAA | Control pressure to avoid glazing |
| Polyester (coated/WP) | 140℃ (coating) | Med-Low: 110-130℃ | TPU, PA | High temp damages coating |
| PP/PE nonwoven | 110℃ | Low: 90-110℃ | EVA, low‑temp TPU | Over‑temp causes melting |
| Genuine leather (top grain) | 130℃ | Med-Low: 100-125℃ | TPU, PA (thin) | High temp causes hardening, shrinkage |
| Microfiber/PU leather | 120℃ | Low: 95-115℃ | TPU, EVA | High temp causes blistering, delamination |
Heating Methods & Adjustment
Temperature calibration based on equipment heat transfer characteristics.
| Heating Method | Adjustment (vs. flatbed) | Process Points |
|---|---|---|
| Flatbed Heat Press | Baseline (Standard) | Static contact conduction. Sufficient hold time; suitable for thick films. |
| Roll‑to‑Roll Laminator | Increase +5 to 10℃ | Dynamic line contact. Higher speed requires higher temp. |
| Vacuum Laminator | Decrease -3 to 5℃ | Thermal radiation + airbag. Extend heating time; for curved surfaces. |
| Hot Air Gun / Oven | Decrease -5 to 8℃ | Prone to surface overheating. Control air speed carefully. |
| Ultrasonic Welding | — | Not applicable. Cannot replace hot melt bonding. |
Practical Recommendations:
- Switching from flatbed to roll laminator: increase set temperature (shorter contact time).
- Vacuum laminators: lower temperature slightly, but extend heating time.
- Hot air processes are high risk; not recommended for precision or ultra-thin films.
Adhesive Thickness & Mesh Weight
Fine-tuning temperature based on the physical mass of the adhesive layer.
| Form & Spec | Mass Level | Temp Adjustment | Reason |
|---|---|---|---|
| Ultra‑thin film (<0.03mm) | Low | Decrease -3 to 5℃ | Conducts heat quickly, prone to over‑melt bleed |
| Standard film (0.03-0.1mm) | Medium | Standard range | General purpose baseline |
| Thick film (>0.10mm) | High | Increase +5 to 10℃ | Requires more heat energy to penetrate mass |
| Light mesh (<20 g/m²) | Low | Standard or lower | Sparse grid, fast heat transfer |
| Standard mesh (20-50 g/m²) | Medium | Standard range | — |
| Heavy mesh (>50 g/m²) | High | Increase +5 to 8℃ | Larger amount of adhesive requires complete melting |
Crucial Adjustment Rule: When adjusting temperature, concurrently adjust pressure and line speed (or hold time) to ensure the proper total heat input per unit area is achieved.
Melting Temp vs. Peel Strength & Wash Cycles
Qualitative performance curve identifying the optimal melt zone for different chemical bases.
| Adhesive Type | Under‑melt Zone (< melting point) |
Optimal Melt Zone (Target Range) |
Over‑melt Zone (> upper limit) |
|---|---|---|---|
| EVA | No bond, peels easily | Peel ≥10 N/25mm Wash 5-8 cycles |
Aged brittle, powdering after washing |
| TPU | Surface tack, false bond | Peel 15-22 N/25mm Wash 10-15 cycles |
Loss of elasticity, stiff hand feel, wash delamination |
| PA | False bond, wash delamination | Peel 18-25 N/25mm Wash 15-20 cycles |
Fabric stiff, adhesive bleeds to surface |
| PES | No bond | Peel 20-28 N/25mm Wash 30-50 cycles |
Edge glue bleed, fabric discoloration |
Conclusion & Best Practice
Each adhesive formulation possesses a narrow optimal melting temperature window (typically ±5℃). Falling below this window results in insufficient bonding; exceeding it degrades performance or damages the substrate. Utilizing production equipment with a temperature control accuracy of ±2℃ or better is essential for consistent quality.
Engineering Excellence & Competitive Advantage
Designed for modern manufacturing, our films deliver measurable operational efficiencies.
Ultra-High Precision & Batch Stability
Utilizing inline DSC real-time monitoring, we guarantee initial melting temperature fluctuations of ≤±3℃ and peak temperature fluctuations of ≤±5℃.
Profit Impact: Allows operators to utilize previous machine parameters, reducing setup time by up to 40% and significantly lowering scrap rates.
Comprehensive Range (65℃ to 180℃)
A complete product portfolio covering ultra-low to high temperatures. Consolidate your supply chain with our one-stop procurement solution.
- 65-85℃: Ultra-Low Temp
- 85-105℃: Low Temp
- 105-135℃: Mid Temp
- 135-180℃: High Temp
Customizable Melting Ranges
Tailored formulations to match your specific processing equipment. We offer Narrow Melting Ranges (5-10℃) optimized for high-speed automated production lines, and Wide Melting Ranges (20-30℃) ideal for manual lamination or extended press equipment requiring longer open times.
Free DSC Melting Range Test Report
Every batch is accompanied by a third-party equivalent DSC curve graph. We clearly annotate the starting point, peak, and end temperatures. This transparent documentation saves your facility incoming inspection costs and provides a reliable basis for quality traceability.
Frequently Asked Questions
Expert insights to help you select the right hot-melt adhesive films and optimize your manufacturing process.
Material Selection
Different materials have vastly different temperature ranges – how to select quickly?
TPU film has multiple grades with different temperatures – how to distinguish?
Production Process
Temperature is within range but still delamination or weak bond?
What problems occur with too high temperature?
What are the effects of too low temperature?
Need Expert Help?
Our R&D engineers are ready to assist you in formulating the perfect hot-melt adhesive solution for your specific application.
Email Us
vomeltsales@163.comCall Us
+86 17712662793Visit Factory
No. 36 Zhonglu Development Zone, Pingwang Town, Wujiang District, Suzhou City, Jiangsu Province
Free Melting Range Diagnosis
Unsure which temperature profile suits your line? Provide us with your substrate materials (e.g., Genuine Leather + PU Sponge), current pressing temperature range, and desired open time.
Our R&D team will provide a complimentary Melting Range Matching Recommendation Report, including specific product models, reference DSC curves, and processing parameter suggestions.