PLASGOM PROPOSES FUNCTIONAL SOLUTIONS IN FLEXIBLE PVC AND RIGID PVC FOR COEXTRUSION PROCESSES:
The polymer coextrusion process is one of the most important in the industrial sector for a better cost / benefit in multiple applications. It is used when the requirements can not be met by a single material. Also to reduce costs by using lower quality material to fill the interior of an application whose outer layers must have high performance.
This is an extrusion technique allowing to “join” two or more plastic materials with dissimilar characteristics for a given configuration.
Examples of co-extruded profiles uses in rigid and flex PVC:
•Automotive: Door and window gaskets.
•Construction: Building sealing.
•Signaling: Transparent PVC price tag profiles.
The main advantages of co-extrusion are:
• Combination of specific properties:
It optimizes the characteristics of both materials with a perfect adhesion between them. Good design should aim to reduce the required amount of material.
Rigid section: Part of the profile usually supporting static loads, fixing, or aesthetic, where important properties can be high impact, gloss, transparency.
Flexible section: it is usually the part needing dynamic recovery and providing sealing / insulation. It may be exposed to grease and oil and sometimes has good behavior at low temperatures.
• Reduction in the number of manufacturing steps:
The number of processes required to obtain desired properties are reduced. Thus more floor space is available and less material waste is generated.
• It allows the recycling of materials:
As both thermoplastic materials belong to the same family, recycling is easy.
Plasgom has an extensive formulation for multiple applications requiring these properties.