PUR and PVC Cables
In industrial production facilities, machine tools, household appliances, smartphones, and computers, cables with varying parameters are used. While the interior of the cables transmits data and electricity, they must be resistant to certain external influences, such as heat, cold, or chemicals, to ensure durability. The outer sheath plays a crucial role here, as it is an important cable parameter with significant impacts.
Below, the different properties of PUR and PVC cables are outlined.
PUR cables
PUR outer jackets are made of polyurethane. This is a flame-retardant plastic that is particularly suitable for insulating cables. These halogen-free cables are safer than halogen-containing cables. PUR cables can be used in drag chains, for example, as they can withstand several million bending cycles. They are highly resistant to oils and chemicals and are therefore often used in the tooling and automation sectors.
Properties of PUR Cables
- Very flexible at low temperatures
- Ideal for variable stress
- Highly tear-resistant and abrasion-resistant
- Suitable for drag chains
- Polyurethane is a Halogen-free material
- Robust against mineral oils and solvents
- Good resistance to UV radiation
- Complete reliability of insulating properties when in contact with water
- Resistant to impacts and blows
- Cables decompose in case of fire without producing opaque smoke or toxic gases
- Polyurethane is resistant to many chemicals but becomes particularly sensitive when in contact with alcohol. It is recommended not to use the cable in areas where alcohol is used. The same applies to cleaning the cable.
PVC Cables
PVC outer jackets are made from polyvinyl chloride. In the cable industry, there are many applications for these cables, which is why various mix types with specific properties have been specified by standardization authorities. This allows for the creation of suitable basic types for standard applications. They are often used in the food or wet environments because they are highly resistant to chemicals and cleaning agents. Compared to PUR cables, PVC cables are not as mechanically robust.
Properties of PVC Cables
- Odorless and tasteless
- Water-resistant, acid-resistant
- Durability
- Low energy consumption during production
- Cost advantage compared to PUR cables
- Poor thermal conductivity (shrinks under heat)
- Poor electrical conductivity
Where PUR and PVC Cables are Used
PUR lines are often used in machine tools, conveyor and assembly lines, mechanical and plant engineering, the automotive industry, automation technology, electric hand tools such as drills and power tools, in the iron, steel, and chemical industries, and in many other areas.
PVC pipes are well known for their use in floor coverings. Among other things, they are also used in machine tools, conveyor and assembly lines, switch cabinet construction, household appliances, textile, woodworking and machine tool construction, electrical and data processing, cleaning equipment, the automotive industry, automation technology, beverage filling systems, and in lamp and lighting technology.
PVC or PUR Cables?
In a direct comparison of PUR and PVC cables, it is not possible to determine which is universally better. Since their differences are minimal, the specific factors related to the application play a crucial role. Only by considering the entire cable and its intended use can one determine the most suitable option. PVC cables, due to their variable formulations, can be better tailored to specific requirements, making them a preferable choice in certain applications. For example, in the food industry and wet environments, PVC cables are often preferred. Additionally, PUR cables tend to be more expensive. When technical requirements allow, it is practical to use PVC cables. From an environmental perspective, PUR cables have a significantly lower environmental impact compared to PVC cables.