TESA ACXplus 70725: 2,400µm Foam Tape for Gap Filling & Stress Relief
In industrial structural bonding, filling large gaps and compensating for thermal deformation of materials are critical challenges. The tesa ACXplus 70725, with its 2,400µm acrylic foam core, delivers the ultimate structural bonding solution for heavy-duty applications.
I. Core Product Positioning
The tesa ACXplus 70725 is a structural adhesive tape specifically engineered for large gap filling, ideal for:
✔ Frameless glass partition installation (thermal expansion compensation)
✔ Seismic-resistant mounting of heavy decorative panels (94.5mil thick cushioning)
✔ Permanent bonding of dissimilar materials (metal/plastic/glass)
✔ Short-term fixation in high-temperature zones (withstands 220°C)
✔ Long-term outdoor structural assembly (-20°C to 80°C cycling)
II. Technical Specifications at a Glance
| Parameter | Technical Data | Industry Significance |
|---|---|---|
| Core Material | Acrylic foam | Absorbs up to 3mm assembly tolerances |
| Adhesive Type | Pure acrylic | 2x more weather-resistant than rubber-based adhesives |
| Total Thickness | 2,400µm / 94.49mil | One of the thickest structural tapes in the industry |
| Short-Term Temp. Resistance | 220°C / 428°F | Withstands high-heat processes like welding |
| Long-Term Temp. Resistance | 120°C / 248°F | Exceeds most industrial equipment operating temps |
| Thermal Cycling Range | -20°C to 80°C | Compensates for 0.5% material thermal expansion |
III. Key Advantages
1. Master of Large Gaps
With 2.4mm thickness, it fills up to 3mm assembly gaps—5x better than conventional tapes.
2. Thermal Stress Manager
Compensates for 0.45mm/m thermal expansion mismatch between glass and metal, reducing delamination risk by 99%.
3. High-Temp Performance Leader
220°C short-term heat resistance makes it ideal for temporary fixation in welding zones on heavy machinery.
IV. Typical Applications
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Structural bonding of frameless glass partitions
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Mounting large decorative panels in high-speed train cabins
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Industrial equipment insulation installation
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Metal support strip bonding for building facades
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Heavy machinery guard assembly
V. Technical Q&A
❓ Q: Is it suitable for ship bulkhead bonding?
→ Absolutely. Passes 4,000-hour salt spray test with >92% strength retention (ISO 9227 standard).
❓ Q: What’s the bond strength on tempered glass?
→ 1.2 MPa shear strength after proper surface prep (EN 15434 standard).
❓ Q: Does it work on curved surfaces?
→ Yes. The foam core compresses up to 30%, conforming to curves with >50mm radius.