General
Shrink rate	2:1
Inner diameter before shrinking	6,4 mm
Inner diameter after shrinking	3,2 mm
Wall thickness	Thin-walled
Adhesive	without thermoplastic adhesive
Packaging form	spool box

The shrink tube of type SB 6.4-3.2 sw 10m from Cellpack is a heat shrink tube with a shrink ratio of 2:1, specifically designed for use in cable and wiring protection technology. It is supplied in a dispenser box with a length of 10 meters and is manufactured with a thin wall, without thermoplastic adhesive. Shrink tubes are used to protect cables and wires from chemical influences as well as for mechanical protection. Due to its construction, it is particularly suitable for applications requiring a thin, flexible, and simultaneously protective covering.

Shrink tube
The shrink tube SB 6.4-3.2 sw 10m is a heat shrink tube that shrinks to approximately half its original diameter when heated. The shrink ratio of 2:1 enables a tight fit around cables or wires, achieving a secure and tight covering. The thin-walled design ensures minimal volume increase after shrinking and allows for flexible processing, especially in tight bends or complex installation situations.

Applications
Typical applications include protecting cables and wires from chemical influences, such as solvents, oils, or other aggressive substances. Additionally, the shrink tube provides good mechanical protection against abrasion, pressure, or light mechanical stress. It is suitable for use in electrical installations, industrial automation technology, and machine and plant cabling, where durable and reliable insulation is required.

Functions and equipment in detail
The shrink tube is manufactured without thermoplastic adhesive, meaning it does not form a self-adhesive bond after shrinking. Adhesion is achieved solely through mechanical fit and elastic adaptation to the cable. The tube is black (sw) in color, making it suitable for use in industrial or technical environments where high visibility or specific color coding is not required.

Technology explained simply
The shrink technology is based on a thermoplastic material that changes shape when heated. During application, the shrink tube is slid over the cable to be protected and then heated using a heating device, such as a hot air blower. The tube contracts and tightly conforms to the cable. A shrink ratio of 2:1 means that a tube with an original inner diameter of 6.4 mm will reach a diameter of approximately 3.2 mm after shrinking, ensuring a tight and secure covering.

Compatibility and accessories
The shrink tube is suitable for cables with a diameter up to 3.2 mm after shrinking. It can be processed using various heating devices, such as hot air blowers or specialized shrink tools.

The shrink tubes are supplied in a dispenser box, enabling continuous and clean dispensing. The length of 10 meters provides sufficient material for multiple applications or longer cable runs.

Installation and mounting
Installation is performed by sliding the shrink tube over the cable and then heating it with a heating device. Care must be taken to ensure the heating device’s temperature is appropriate to shrink the material without damaging it. Processing typically occurs at temperatures between 100 °C and 120 °C, with the exact temperature depending on the material composition. The shrinking time is short, and the tube reaches its final shape after cooling.

Advantages in operation
The shrink tube provides reliable and durable protection for cables that must be shielded from chemical and mechanical influences. The thin-walled design minimizes volume increase after shrinking, making it particularly suitable for dense installations. The black-colored version is robust and resistant to UV radiation and other environmental influences, making it suitable for industrial environments. The dispenser box enables clean and efficient handling of the material.