There is a set minimum level that products must meet before they can be marketed as an ASTM material. The American Society for Testing and Materials has a specification for each product line. Co-Extrusion has a higher investment in equipment, tooling, training and overall manufacturing, but involves lower material costs. The two layers are chemically attached to each other under great pressure and temperature forming one continuous piece. The fence is made out of two layers: an outer layer containing the ultraviolet inhibitor and an inside layer with less ultraviolet inhibitor ingredients. Mono-extrusion is less expensive to set up and requires less technical expertise on the manufacturing floor.Ĭo-Extrusion – This is the most advanced and most widely used method. This process puts ultraviolet inhibitors all the way through the product, even on the inside, where they are not needed. This extrusion process blends the elements of the PVC compound extruded through a die to become the walls of the single layer product. Some manufacturers still use this process. Mono-Extrusion – This is the original way vinyl fencing was made. There are two processes that are normally used in the production of all types of PVC / Vinyl Fencing. The vinyl compound is formulated from the raw materials that include PVC resin, UV inhibitors (TiO2), impact modifiers, stabilizers and toners. PVC is Crude oil, natural gas and chloride. PVC is best-known as the plumbing pipe at the hardware store. It’s made from PVC/polyvinyl chloride resin. Let’s review the basics of Vinyl Fencing: This can happen if your vinyl fencing is not high-quality material! Do you want it to expand or contract and shift your fence line?.Do you want it to fade or discolor within 1-2 years?.Remember, a good warranty does not always mean you have a high-quality product. Manufacturing a vinyl fence requires a careful process to reach a high-quality product. If you’ve decided on Vinyl Fencing for your project, please understand that the old saying of: “if you’ve seen one you’ve seen them all” definitely does not apply.
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