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Introduction
"Extender PVC" is not a specific chemical compound but a term used to describe a type of polyvinyl chloride (PVC) formulation that is modified with extenders or fillers. These additives are used to improve the physical properties of PVC, reduce cost, or impart specific characteristics. Extenders can include materials like calcium carbonate, clay, or other minerals. The resulting "extender PVC" is used in various applications, including food contact materials such as conveyor belts, seals, and gaskets.
CAS Number
PVC itself has a CAS Number of 9002-86-2. However, "Extender PVC" as a formulation does not have a single CAS number.
Synonyms
• Filled PVC
• Modified PVC
• PVC compound with extenders
Topic Headings
1. Primary Food Contact Applications (list form)
• Conveyor belts — Used in food processing and packaging lines.
• Seals and gaskets — Employed in food-grade sealing applications.
• Flexible hoses and tubing — Used for transferring food products.
• Profiles — Used as structural components in food processing equipment.
2. Mechanism of Action of Extenders (paragraph form)
Extenders are added to PVC to modify its properties. They can function as fillers, increasing the material's stiffness and reducing cost. They can also act as processing aids, improving the flow and fusion characteristics of the PVC compound. The choice of extender depends on the desired properties of the final product.
3. Physical and mechanical properties (list form)
• Flexibility — Can range from rigid to highly flexible.
• Durability — Good resistance to wear and chemicals.
• Scratch resistance — Can be enhanced with specific extenders.
• Weather resistance — Good weatherability for outdoor applications.
• Dielectric properties — Good electrical insulation properties.
4. Safety and Regulatory Status (paragraph form)
Extender PVC used in food contact must comply with relevant regulations, such as EU Regulation (EC) No 10/2011 for plastic materials intended to come into contact with food. In the US, it must comply with FDA regulations for food contact substances. The safety of the final product depends on the specific formulation and the potential for migration of components into food. Manufacturers must ensure that the extender PVC meets all applicable safety standards.
