Benefits
Reliable Adhesion on Selected Substrates
Tesa 4940 provides high adhesion on various foam, plastic, and metal surfaces. Its tackified acrylic adhesive is designed to support reliable bonding when the substrate and application conditions are suitable.
Foam Mounting Performance
The adhesive provides good wetting and very good tack, making the tape suitable for selected foam mounting and laminating applications.
Actual performance depends on foam type, surface structure, density, and application conditions.
Good Repulsion Resistance
Tesa 4940 offers good resistance to repulsion forces. This characteristic may help reduce lifting or detachment when selected foam materials are mounted on curved or stressed surfaces.
The final result depends on the foam properties, curvature, bonding area, and application design.
Die-Cutting Performance
The thick PE-coated paper liner supports excellent die-cutting performance and dimensional stability.
Potential converting processes include:
- Precision die cutting
- Kiss cutting
- Custom adhesive shapes
- Foam and felt lamination
- Custom mounting components
Converting performance should be validated according to the actual design and production requirements.
Environmental Resistance
According to tesa product information, the tape provides good humidity and chemical resistance, as well as very good UV ageing resistance.
Application-specific testing is recommended for long-term exposure to chemicals, moisture, UV radiation, or changing environmental conditions.
Technical Specifications
The following values are representative or typical and should not be used as product specifications.
| Property | Typical Value |
|---|---|
| Product Name | Tesa 4940 |
| Product Type | Double-sided non-woven adhesive tape |
| Total Thickness | 160 μm |
| Color | Translucent |
| Backing Material | Non-woven |
| Adhesive Type | Tackified acrylic |
| Liner Type | PE-coated paper |
| Tack | Very good |
| Static Shear Resistance at 23°C | Good |
| Humidity Resistance | Good |
| Chemical Resistance | Good |
| UV Ageing Resistance | Very good |
| Softener Resistance | Medium |
| Temperature Resistance, Short Term | 150°C |
| Temperature Resistance, Long Term | 80°C |
Typical Adhesion Values
| Substrate | Initial Adhesion | After 14 Days |
|---|---|---|
| ABS | 8.0 N/cm | 13.6 N/cm |
| Glass | 8.9 N/cm | 10.3 N/cm |
| Polycarbonate (PC) | 10.1 N/cm | 13.2 N/cm |
| Polyethylene (PE) | 2.9 N/cm | 3.8 N/cm |
| Steel | 9.3 N/cm | 11.3 N/cm |
Technical Disclaimer
The values above are typical test results and are not guaranteed specifications. Adhesion may vary depending on the substrate, surface preparation, application pressure, dwell time, temperature, and testing method.
Customers should consult the latest tesa technical documentation and conduct application-specific testing before mass production.
Applications
Tesa 4940 is designed for selected mounting and laminating applications involving foam, plastic, paper, textile, leather, and felt materials.
Foam Part Mounting
Potential applications include:
- Polyethylene foam mounting
- Polyurethane foam bonding
- Polystyrene foam assembly
- Foam lamination
- Foam sealing components
- Cushioning material attachment
The suitability of the tape depends on foam density, surface characteristics, compression, and repulsion force.
Plastic Part Mounting
Tesa 4940 may be evaluated for mounting selected plastic components, including:
- Plastic molded parts
- Plastic trims
- Plastic panels
- Plastic profiles
- Lightweight plastic components
Substrate compatibility should be confirmed before production, especially for low-surface-energy plastics.
Nameplate and Label Mounting
The tape may be considered for mounting selected nameplates and identification components made from:
- Metal
- ABS
- Polycarbonate
- Polystyrene
- PVC
- PE
- PP
Actual adhesion and ageing performance should be evaluated on the specific nameplate material and surface finish.
Paper and Cardboard Mounting
Potential applications include:
- Heavy paper mounting
- Cardboard lamination
- Paper component assembly
- Display and presentation materials
- Packaging-related bonding applications
Textile, Leather, and Felt Lamination
Tesa 4940 is listed for mounting textile, leather, and felt materials.
Potential uses include:
- Felt lamination
- Textile component attachment
- Leather bonding
- Interior material assembly
- Soft-material mounting
Testing is recommended for porous, flexible, textured, or highly absorbent materials.
Precision Die-Cut Components
The PE-coated paper liner may support selected die-cutting and converting applications, including:
- Custom adhesive pads
- Foam bonding parts
- Nameplate adhesive components
- Gasket and cushioning attachments
- Custom laminated adhesive shapes
Compatible Materials
Tesa 4940 may be evaluated for bonding the following material categories:
- Polyethylene (PE) foam
- Polyurethane (PU) foam
- Polystyrene (PS) foam
- Selected plastic materials
- ABS
- Polycarbonate (PC)
- PVC
- Polypropylene (PP)
- Metal
- Glass
- Paper and cardboard
- Textile
- Leather
- Felt
Material Compatibility Considerations
The actual bonding performance depends on:
- Surface energy
- Surface cleanliness
- Surface texture
- Material flexibility
- Plasticizer content
- Foam density
- Surface treatment
- Contact area
- Application pressure
Special testing is recommended for PE, PP, silicone-treated surfaces, textured materials, and substrates containing plasticizers.
Industries
Tesa 4940 may be considered for selected applications in the following industries:
- Foam converting
- Furniture manufacturing
- Interior decoration
- Sign and nameplate production
- Packaging
- Textile and leather processing
- Automotive components
- Industrial assembly
- Consumer products
- Plastic component manufacturing
The suitability of the tape should be verified according to the actual product design and application environment.
Why Choose Yousan?
Yousan provides adhesive tape converting and precision die-cutting services for industrial and commercial applications.
Our potential services include:
- Custom-width slitting
- Precision die cutting
- Kiss cutting
- Laminating
- Foam tape converting
- Custom adhesive component production
- OEM and ODM converting
- Roll-to-roll processing
Custom Converting of tesa 4940
Tesa 4940 may be evaluated for custom adhesive components used in foam mounting, nameplate attachment, plastic assembly, and material lamination.
For a technical review, customers can provide:
- Product drawings or CAD files
- Material specifications
- Part dimensions
- Dimensional tolerances
- Adhesive thickness requirements
- Bonding substrate details
- Required quantity
- Packaging requirements
Final converting feasibility depends on the actual tape construction, part geometry, liner configuration, and production requirements.
Installation Guide
Step 1: Prepare the Substrate
Ensure that the bonding surfaces are clean, dry, and free from dust, oil, grease, release agents, and other contaminants.
Step 2: Check Material Compatibility
Test tesa 4940 on the actual substrates before production. Additional testing may be required for foam, plastic, leather, textile, and coated materials.
Step 3: Apply the Tape
Apply the tape evenly to the first substrate. Avoid touching the adhesive surface or introducing contamination.
Step 4: Remove the Release Liner
Remove the liner carefully to avoid stretching, wrinkling, or damaging the adhesive layer.
Step 5: Position the Second Substrate
Align the second substrate accurately and ensure sufficient contact across the bonding area.
Step 6: Apply Pressure
Apply suitable and uniform pressure to promote adhesive contact and reduce air entrapment.
Step 7: Validate the Bond
Before mass production, evaluate:
- Initial adhesion
- Final adhesion
- Peel strength
- Shear performance
- Repulsion resistance
- Environmental ageing
- Dimensional stability
Storage
Store tesa 4940 in its original packaging and protect it from direct sunlight, excessive heat, moisture, dust, and contamination.
Storage conditions may influence adhesive performance. Specific storage temperature, humidity, shelf life, and handling requirements should be confirmed in the latest applicable tesa documentation.
Before production use, inspect the packaging and material condition.
FAQ
1. What is tesa 4940?
Tesa 4940 is a 160 μm translucent double-sided non-woven tape with a tackified acrylic adhesive and a PE-coated paper liner.
2. What is tesa 4940 used for?
It is designed for mounting plastic and foam parts, heavy paper or cardboard, textile, leather, and felt.
3. How thick is tesa 4940?
The total tape thickness is approximately 160 μm.
4. What type of adhesive does tesa 4940 use?
tesa 4940 uses a tackified acrylic adhesive.
5. Is tesa 4940 suitable for foam bonding?
Yes. It is designed for selected foam mounting applications and provides high adhesion on various foam surfaces. Foam type and application conditions should be evaluated before production.
6. Is tesa 4940 suitable for plastic surfaces?
It may be evaluated for selected plastic surfaces, including ABS, PC, PVC, and other suitable materials. Compatibility should be confirmed through testing.
7. Can tesa 4940 be used on PE and PP?
The tape has published adhesion values on PE. However, adhesion to PE and PP may be lower than on higher-surface-energy materials. Application-specific testing is recommended.
8. Is tesa 4940 suitable for die cutting?
Yes. Its thick PE-coated paper liner is designed to support good die-cutting performance and dimensional stability.
9. What is the temperature resistance of tesa 4940?
The typical short-term temperature resistance is 150°C, while the typical long-term temperature resistance is 80°C.
Actual performance depends on the application, bonding conditions, and exposure duration.
10. Is tesa 4940 waterproof?
The product has good humidity resistance, but waterproof performance should not be assumed without application-specific testing and supporting technical documentation.
11. Can Yousan provide custom die-cut tesa 4940 tape?
Yousan can review potential slitting, laminating, and die-cutting requirements. Feasibility depends on the tape construction, part design, tolerance, and production volume.
12. Is tesa 4940 suitable for high-temperature applications?
It offers a typical short-term temperature resistance of 150°C and long-term resistance of 80°C. Customers should evaluate the complete assembly under actual temperature conditions.
Downloads
Available upon request:
- Tesa 4940 Technical Data Sheet (TDS)
- Safety Data Sheet (SDS)
- Product Brochure
- Precision Die-Cutting Capability Guide
Please contact our sales team if you require the latest technical documentation.
