tesa®Tape 4961 Double-Sided Tape with Paper Backing

Introduction

tesa® 4961 is a double-sided tape known for its natural rubber adhesive and special paper backing. This report provides a comprehensive overview of its product description, specifications, application fields, and performance values.

Product Description

tesa® 4961 consists of a natural rubber adhesive and a special paper backing. The “hard” adhesive system offers good shear resistance and can be removed without leaving adhesive residues, making it suitable for various applications.

Product Details and Specifications

Application Fields

• Splicing of Paper and Film: Ideal for joining paper and film materials due to its strong adhesive properties.
• Self-Adhesive Mounting of Sanding Discs: Provides a reliable bond for mounting sanding discs.
• General Mounting on Smooth Surfaces: Suitable for general mounting tasks on smooth surfaces, ensuring a secure hold.

Product Construction

• Backing Material: Flat paper, which provides a stable and smooth surface for the adhesive.
• Colour: White, making it visually unobtrusive in various applications.
• Colour of Liner: Brown, which helps in easy identification and application.
• Total Thickness: 205 µm, offering a balance between flexibility and strength.
• Type of Adhesive: Natural rubber, known for its strong bonding properties.
• Type of Liner: Glassine, which is a smooth and glossy paper that aids in easy release.

Properties / Performance Values

• Elongation at Break: 3%, indicating the tape’s ability to stretch slightly before breaking.
• Tensile Strength: 90 N/cm, providing robust resistance to pulling forces.
• Tack: Good, ensuring initial stickiness for immediate bonding.
• Softener Resistance: Medium, suitable for applications where moderate exposure to softeners is expected.
• Static Shear Resistance at 40°C: Very good, ensuring the tape remains in place under static loads at elevated temperatures.
• Humidity Resistance: Medium, making it suitable for environments with moderate humidity.
• Temperature Resistance:
• Long Term: 40°C, suitable for continuous use at this temperature.
• Short Term: 110°C, can withstand higher temperatures for short durations.
• Chemical Resistance: Medium, providing adequate resistance to various chemicals.
• Ageing Resistance (UV): Medium, ensuring the tape maintains its properties over time when exposed to UV light.

Adhesion to Various Materials

• ABS: Initial – 6 N/cm, After 14 days – 6.6 N/cm.
• Aluminium: Initial – 6.1 N/cm, After 14 days – 6.6 N/cm.
• PC (Polycarbonate): Initial – 7.3 N/cm, After 14 days – 7.5 N/cm.
• PE (Polyethylene): Initial – 3.9 N/cm, After 14 days – 4.1 N/cm.
• PET (Polyethylene Terephthalate): Initial – 5.7 N/cm, After 14 days – 5.8 N/cm.
• PP (Polypropylene): Initial – 5.4 N/cm, After 14 days – 6.7 N/cm.
• PS (Polystyrene): Initial – 7 N/cm, After 14 days – 7.7 N/cm.
• PVC (Polyvinyl Chloride): Initial – 6.2 N/cm, After 14 days – 6.3 N/cm.
• Steel: Initial – 7.8 N/cm, After 14 days – 8 N/cm.

Conclusion

tesa® 4961 double-sided tape with paper backing is a versatile and reliable adhesive solution. Its natural rubber adhesive and special paper backing provide strong bonding, good shear resistance, and easy removal without residue. It is suitable for various applications, including splicing, mounting, and general use on smooth surfaces. The tape’s performance values, such as tensile strength, elongation, and adhesion to different materials, make it a robust choice for industrial and general use.