FLEXIBLE PVC
FLEXIBLE PVC
Flexible PVC is used in a large variety of applications.
The plasticiser incorporated in the PVC matrix increases its flexibility to almost any desired level and significantly extends its scope of applications. Many different plasticiser types are used to meet specific end-product requirements. Normally flexible PVC formulations are processed at lower temperatures compared to rigid and semi-rigid PVC. Type and dosage of PVC stabilisers are selected according to the process technology, working conditions and PVC finished articles.
Flexible Suspension-PVC (dry-blend) can be processed with various production technologies like calendering, extrusion, injection moulding and blown extrusion. Flexible Emulsion-PVC (plastisol) is roto-moulded, dip coated and spread coated. Spread coating is used for construction applications like flooring, wall covering and tensile architecture and for automotive applications like synthetic leather for car interiors. Liquid mixed metals stabilisers are typically used like Ba/Zn, Ca/Zn and Mg/Zn. Solid mixed metals mostly Ca-based are sometimes used when final application requires low VOC (volatile organic compounds), absence of phenol and solvents. Flexible PVC applications can be divided into two main categories: technical and medical.