Products
Recommended Materials
Request a Sample
Get factory-direct adhesive solutions tailored to your industrial needs.
Email: vomeltsales@163.com | Phone: +86 17712662793
No. 36 Zhonglu Development Zone, Pingwang Town, Wujiang District, Suzhou City, Jiangsu Province
Hot Melt Adhesive Film & Mesh for Metals
Metal surfaces are dense, smooth, non-porous, and prone to oxidation—making them difficult-to-bond inert materials. Traditional liquid glues suffer from poor adhesion and delamination. Discover our standardized mass production solution for stainless steel, aluminum, iron, galvanized steel, and copper.
Engineered Adhesive Solutions
Leveraging our R&D-driven manufacturing process, we deliver over 10,000 specifications of high-performance functional films designed for precision bonding across 15+ global industries.
Hot Melt Adhesive Film
A continuous, uniform layer of advanced adhesive designed for seamless lamination. Engineered for superior bonding strength, excellent environmental resistance, and precise application in electronics, automotive interiors, and technical textiles.
Hot Melt Adhesive Mesh Web
Breathable, non-woven adhesive structures offering optimal flexibility and air permeability without compromising bond integrity. The definitive choice for apparel manufacturing, footwear composites, and specialized filtration systems.
Bonding Characteristics & Dedicated Solutions
Addressing the unique inertness, oxidation, and surface energy challenges of six primary metal categories.
Stainless Steel (201/304/316)
Difficulty: Extremely smooth, strong molecular inertness. Conventional adhesives 100% fail.
Optimal: EAA high-adhesion film, modified TPU.
Process: Must lightly sand + degrease.
Aluminum Alloy & Profiles
Difficulty: Dense oxide layer causes false bonding; high thermal conductivity.
Optimal: TPU flexible film, PES weather-resistant film.
Applications: Profile wrapping, soft padding.
Cold-rolled Iron / Steel Plate
Difficulty: Prone to oxidation and rust. Adhesive hydrolysis causes delamination.
Optimal: PES water/weather-resistant film.
Advantage: Seals against air/moisture, prevents rust.
Galvanized / Aluzinc Sheet
Difficulty: Zinc layer is inert; high temp/pressure causes peeling and blackening.
Optimal: EAA low-stress high-adhesion film.
Taboo: Do not use high-temperature rigid adhesives.
Copper & Copper Alloy
Difficulty: Easily oxidizes forming patina, discolors at high temperature.
Optimal: TPU low-temperature flexible film.
Key: Low-temperature pressing to avoid discoloration.
Shaped Hardware Parts
Difficulty: Curved surfaces, folded edges cause uneven pressure and edge lifting.
Optimal: TPU flexible film, high-elastic mesh.
Advantage: High elasticity conforms to complex shapes.
Quick Metal Selection Table (Ready for Mass Production)
| Metal Material | First Choice | Second Choice | Core Application Scenarios |
|---|---|---|---|
| Stainless Steel | EAA high-adhesion film | TPU high-adhesion film | Decorative panels, film coating, seamless high-strength bonding |
| Aluminum Alloy | TPU film | PES/EAA | Aluminum profile wrapping, aluminum sheet soft padding, outdoor |
| Iron/Steel Plate | PES film | TPU film | Structural composites, moisture/rust protection, high-strength fixing |
| Galvanized Steel | EAA low-stress film | Modified PES | Cabinet panels, coated metal composites, prevent zinc damage |
| Copper | TPU low-temp film | EAA film | Copper part bonding, anti-oxidation, anti-discoloration |
| Metal Soft Padding | TPU/PA mesh | EAA film | Metal + fabric/leather/foam – soft, non-stiff |
| Metal + Plastic Dissimilar | EAA/POE film | TPU composite | Steel-plastic, aluminum-plastic, cross-material bonding |
Surface Pre-treatment SOP
90% of metal bonding failures are due to inadequate surface treatment. Strictly follow these standards:
Degreasing (Mandatory)
Wipe thoroughly with industrial alcohol or degreaser – remove oil, fingerprints, mold release agents.
Roughening
Stainless steel: 200-240 grit. Aluminum/iron: 180 grit. Galvanized: very light sanding (do not damage zinc).
Clean & Dry
No dust, no water stains, workshop humidity ≤60%.
Production Red Lines
Strictly avoid these practices to ensure mass production yield and structural integrity.
- Never bond stainless steel without sanding – will certainly delaminate.
- Never process metal with oil, oxidation, or rust.
- Never use high-temp/hardness adhesives on galvanized steel – causes zinc loss and blackening.
- Never subject bonded metal to load or handling before full cooling.
- Never use ordinary EVA for outdoor or humid applications.
Standardized Mass Production Parameters
Baseline parameters for equipment setup. Adjust based on specific metal thickness and thermal conductivity.
| Adhesive Type | Temperature | Pressure | Time | Suitable Metals & Key Points |
|---|---|---|---|---|
| TPU Film/Mesh | 110-130℃ | 0.3-0.5 MPa | 10-18 s | Universal; first choice for curves; low temp prevents oxidation |
| EAA High-Adhesion | 120-145℃ | 0.3-0.5 MPa | 12-20 s | Dedicated for stainless & galvanized steel; ultra-strong adhesion |
| PES Weather-Resistant | 140-160℃ | 0.4-0.6 MPa | 15-22 s | Iron, outdoor metals; temperature & water resistant, rust-proof |
| PA Mesh | 125-145℃ | 0.3-0.5 MPa | 12-18 s | Metal soft padding breathable composites; blister prevention |
| POE Cross-Bonding | 115-135℃ | 0.3-0.5 MPa | 10-18 s | Metal + plastic dissimilar material composites |
Flatbed Heat Press
Stepwise pressing, hold pressure during cooling. Metal conducts heat quickly; avoid local high temperature false bonding.
Roll-to-Roll Laminator
Uniform low pressure, stable feeding. Prevent stretching thin materials; avoid uneven cooling delamination.
Shaped Wrapping Machine
Progressive pressing, low-temp flexible process. Full air exhaust on curved surfaces; prevent edge hollow spots.
High-Frequency Production Problems & Solutions for Metal Bonding
Expert diagnostic and corrective strategies to ensure durable, high-performance adhesion in industrial manufacturing.
| Production Problem | Root Cause | Corrective Solution |
|---|---|---|
| Metal bond peels completely with no adhesion | Smooth surface not roughened, oil residue | Sand & degrease; switch to EAA/TPU high-adhesion system |
| Initially strong, then later delaminates | Poor hydrolysis/aging resistance of adhesive | Replace with PES/TPU water/aging-resistant materials |
| Zinc layer peeling, blackening on galvanized steel | High temperature/pressure + rigid adhesive stress | Use EAA low-stress adhesive; lower temperature & pressure |
| Rusting, local blistering on iron after bonding | Moisture ingress, poor adhesive sealing | Use PES full-sealing film to block moisture; control humidity |
| Edge lifting, hollow spots on curved hardware | Adhesive too rigid, poor conformability | Switch to high-elastic TPU flexible film; stepwise exhaust pressing |
| Metal soft padding becomes stiff, poor hand feel | Using rigid adhesive, excessive temperature/pressure | Replace with TPU/PA flexible mesh; low-temp light pressure |
Traditional Liquid Glue vs. Hot Melt Film
| Parameter | Traditional Liquid Glue | Hot Melt Adhesive Film | Mass Production Advantage |
|---|---|---|---|
| Curing Speed | Slow, requires static drying | Seconds, instant shaping | Suitable for automated lines – double throughput |
| Adhesion | Easily peels from smooth metal | Molecular-level fusion, high strength | Solves inert metal bonding problems |
| Water/Weather Res. | Poor, softens in water | TPU/PES water & aging resistant | Stable in humid/outdoor conditions |
| Appearance | Glue overflow, staining, yellowing | Flat seamless, no residue | High yield, no scrap defects |
| Environmental | Contains solvents, odor | Solvent-free, zero odor | Meets export furniture/hardware standards |
Metal Bonding Production Red Lines
To guarantee structural integrity and prevent catastrophic delamination in industrial applications, the following operational guidelines are absolute and must be followed without exception.
Precision & Reliability
Engineered solutions for 15+ global industries.
Surface Preparation is Mandatory
Never bond stainless steel without sanding – skipping this step will certainly lead to delamination and complete bond failure.
Zero Contamination Tolerance
Never process metal with oil, oxidation, or rust. Surfaces must be chemically clean and structurally sound prior to adhesive application.
Galvanized Steel Compatibility
Never use high-temperature or high-hardness adhesives on galvanized steel. This improper pairing causes severe zinc loss and surface blackening.
Strict Curing Protocol
Never subject bonded metal to load, cutting, or handling before full cooling. Premature stress compromises the cross-linking and final bond strength.
Environmental Matching
Never use ordinary EVA or low-weather-resistance adhesives for outdoor or humid applications. Always select industrial-grade formulations matched to the environmental exposure.
Real-World Metal Bonding Cases
Stainless Steel Decorative Panel
Adhesive: EAA high-adhesion film.
Result: Peel strength ≥2.0 N/mm, salt spray test 48h no delamination, clean surface.
Aluminum Profile Soft Padding
Adhesive: TPU flexible film.
Result: Conformal bonding, repeated flexing no cracking. Temp range -22℃~90℃.
Iron/Steel Moisture Proof Composite
Adhesive: PES weather-resistant film.
Result: Fully sealed against moisture, prevents rust. Passed high-low temp cycle tests.
Galvanized Steel Cabinet
Adhesive: EAA low-stress film.
Result: No zinc layer damage, no blackening. Long-term use no delamination.
Copper Decorative Part
Adhesive: TPU low-temperature process.
Result: No high-temp oxidation or discoloration. Meets high-end appearance standards.
Metal + Plastic Composite
Adhesive: POE/EAA cross-bonding film.
Result: Dual-direction anchoring solves stress cracking. Perfect for device housings.
Advanced Mass Production FAQs
Why does ordinary hot melt adhesive completely fail on stainless steel?
What is the biggest problem with galvanized steel bonding? How to avoid it?
Can metal bonds pass salt spray and high-low temperature cycle tests?
Why does a metal bond delaminate after sitting for some time?
Is there a universal adhesive for all metals?
Request Custom Metal Solution
Provide your metal type, bonding requirements, and process parameters for free samples and TDS/MSDS technical white papers.
Email Us
vomeltsales@163.com
Call Us
+86 17712662793
Factory Address
No. 36 Zhonglu Development Zone, Pingwang Town, Wujiang District, Suzhou City, Jiangsu Province