Soft PVC

Flexible PVC – flexible plastic for technical applications

Flexible PVC is a thermoplastic whose flexibility is precisely adjusted using plasticisers. This produces materials that are permanently elastic, dimensionally stable and versatile. In industrial environments, flexible PVC is used wherever flexibility, chemical resistance and cost-effective processing are required.

Compared with rigid PVC, flexible PVC can be bent, formed and used at low temperatures. The mechanical properties are precisely adjusted via the formulation, such as hardness, recovery behaviour or temperature resistance. This makes flexible PVC suitable for series applications as well as for customised solutions.

Typical forms of use are sheets, cut pieces, strips or moulded parts. Depending on the version, flexible PVC meets requirements for abrasion resistance, electrical insulation or media resistance. A classification against other elastomers and plastics makes material selection easier for the specific application.

For differentiation and selection of alternative materials, the overview of elastomers offers structured guidance.

Properties and technical characteristics of flexible PVC

Flexible PVC is characterised by a combination of flexibility, mechanical load capacity and chemical resistance. The specific material properties depend largely on the formulation used, the plasticiser content and possible additives.

Mechanical properties

The hardness of flexible PVC is usually stated in the Shore A range and can be adjusted across a wide range. This makes both very soft and dimensionally stable, elastic versions feasible. The material has good recovery capacity and, when correctly designed, exhibits high flex fatigue resistance.

Thermal resistance

Flexible PVC can typically be used in a temperature range of around –20 °C to +60 °C. Higher temperatures are possible for short periods, depending on the respective compound. For permanently higher temperatures or strongly fluctuating climatic conditions, the material choice should be carefully reviewed.

Chemical and physical properties

The material is resistant to many aqueous solutions, acids and alkalis. Resistance to oils, greases or solvents can vary and depends on the specific composition. Flexible PVC also has good electrical insulating properties and is therefore frequently used in technical environments.

For applications with higher requirements for temperature, media or ageing resistance, a comparison with EPDM can be useful.

Typical areas of application for flexible PVC

Flexible PVC is used in many industrial and technical applications where flexible, durable and economically manufacturable plastic solutions are required. The material is often chosen because of its good processability and adjustable mechanical properties.

Mechanical and plant engineering

In mechanical and plant engineering, flexible PVC is used among other things for protective covers, flexible strips, sealing profiles or as a protective layer. The material is suitable for applications with moderate mechanical loads and provides reliable separation or shielding of components.

Electrical engineering and cable protection

Due to its good electrical insulating properties, flexible PVC is widely used in electrical engineering. Typical forms of use are cable sheathing, insulating mats or flexible protective conduits. The combination of flexibility and insulating effect facilitates installation and maintenance.

Industry, warehousing and logistics

In industrial environments, flexible PVC is frequently used as strip material, curtain system or protective covering. It serves as dust, noise or splash protection and supports the spatial separation of work areas without impeding the flow of materials.

For applications with higher mechanical stress or pronounced elasticity, the use of SBR can alternatively be considered.

Forms, delivery types and cut to size of flexible PVC

Flexible PVC is available in different forms and dimensions and can therefore be flexibly adapted to technical requirements. The choice of the suitable delivery form depends on the area of application, load and desired further processing.

Sheets, webs and films

Common delivery forms are sheets, webs and films in various thicknesses. These variants are suitable for protective covers, linings or separation systems. The material thickness is adapted to mechanical load and desired flexibility.

Strips and cut pieces

Flexible PVC is frequently supplied as strip material or as a dimensionally accurate cut piece. These formats are used among other things in curtain systems, protective strips or covers. The cut to size is carried out precisely according to drawing or dimensional specification and enables direct installation without additional processing.

Moulded parts and custom-made products

For special applications, moulded parts or individually manufactured versions are possible. Here, flexible PVC is adapted to geometric requirements, installation situations or functional specifications. Combinations with other materials can also be realised.

For project-specific requirements regarding geometry, dimensions or quantity, the cut to size section offers a suitable point of contact.

Advantages and limits of flexible PVC in material comparison

Flexible PVC offers a balanced combination of flexibility, cost-effectiveness and processing versatility. For many industrial applications, the material represents a practical solution, particularly for series requirements and defined operating conditions.

Technical advantages

The hardness and elasticity of flexible PVC can be precisely adjusted via the formulation. The material allows simple further processing by cutting, punching or forming. The electrical insulating effect supports use in technical and electrical engineering applications. In addition, the wide availability of various delivery forms enables rapid integration into existing processes.

Material-related classification

Flexible PVC is particularly suitable for applications with moderate temperatures, uniform mechanical loads and defined media contact. In this environment, the material convinces with stable properties and reproducible quality.

Differentiation from alternative materials

For areas of application with increased thermal stress, intensive media exposure or high long-term elasticity, elastomers such as FKM or EPDM offer extended performance reserves. The material comparison is always application-related and based on real operating conditions.

Selection aid and material advice for flexible PVC

The suitability of flexible PVC results from the interaction of mechanical requirements, environmental conditions and desired service life. A structured assessment facilitates material selection and reduces adaptation effort over the course of the project.

Mechanical requirements

The decisive factors are the type of load, movement frequency and required flexibility. Flexible PVC is suitable for applications with uniform, moderate mechanical stresses and defined recovery behaviour.

Temperature and environmental conditions

The application range of flexible PVC is in the low to medium temperature segment. Environmental influences such as moisture, cleaning media or UV radiation should be taken into account when selecting the material, as they can affect long-term stability.

Contact media and standard requirements

In contact with oils, greases or chemicals, a material-related test is required. Industry-specific specifications and standards also play a role, for example in mechanical engineering or electrical engineering.

For application-related advice and coordination with specific requirements, the material advice page offers further support.

Frequently asked questions about flexible PVC

What is flexible PVC?

Flexible PVC is a thermoplastic whose flexibility is adjusted using plasticisers. This produces a permanently elastic, dimensionally stable material for technical applications.

What is the difference between flexible PVC and rigid PVC?

Flexible PVC is flexible and deformable, while rigid PVC is designed to be stiff and dimensionally stable. The material choice depends on mobility and mechanical requirement.

For which temperature ranges is flexible PVC suitable?

Flexible PVC is predominantly used in the low to medium temperature range. The exact application limit depends on the respective formulation.

Is flexible PVC chemically resistant?

Flexible PVC shows good resistance to many aqueous media. In contact with oils, greases or solvents, an application-specific test is required.

Is flexible PVC permanently elastic?

Flexible PVC has a permanently elastic basic characteristic within the intended operating conditions. Temperature, load and formulation influence the long-term behaviour.

Can flexible PVC be cut to size accurately?

Flexible PVC is suitable for precise cut pieces according to dimensional specification and can be supplied as sheet, web or strip ready for installation.

What alternatives are there to flexible PVC?

Depending on the requirement, expanded rubber, EPDM or other elastomers may be considered.