Jointing adhesive tapes

A jointing adhesive tape is designed to connect two ends, link two substrates, or ensure continuity between two elements. Also known as connecting tape or junction adhesive, it is particularly used during the transformation of rolls, the connection of films, and the assembly of technical materials.

A jointing tape can be used to connect two rolls, maintain a starter, link films, assemble papers, or reinforce a joint. It is particularly useful in industrial processes where a reliable connection helps to limit interruptions, manual rework, and material loss.

Depending on its composition, a connecting adhesive tape can be used on plastic films, papers, polyester substrates, flexible materials, or certain technical surfaces. Compatibility depends on the material, its surface condition, flexibility, and the stresses to which the joint will be exposed.

The choice mainly depends on the materials to be joined, the required mechanical strength, and the duration of the jointing. It is also important to consider the temperature, the speed of the process, the flexibility of the substrate, the thickness of the tape, and any potential chemical stresses. The colour can also help in identifying the joint.

A heat-sensitive application requires an adhesive tape whose backing and adhesive retain their properties at the process temperature. Polyester tapes with silicone adhesive are particularly suitable for certain high-temperature bonding and processing operations. The maximum temperature and duration of exposure must always be checked.

Yes, depending on the chosen solution. Some tapes allow for temporarily holding a joint or facilitating a production step, while others are intended to form a more permanent junction. The level of adhesion, the strength of the backing, and the removal conditions must be suited to the expected duration of the connection.

The surfaces must be clean, dry, and free from dust, grease, or residues. The two elements must be properly aligned before application, and then the tape should be applied with consistent pressure, without wrinkles or bubbles. DERFI can conduct tests to verify the adhesion, strength, and compatibility of the tape with the process used.