Plastic extrusion is a fundamental manufacturing process used to create a wide variety of products, from films and sheets to pipes and profiles. A critical factor in successful extrusion is the melt strength of the polymer, which dictates its ability to hold its shape during processing without sagging or breaking. Degraded polymers, particularly recycled ones, often exhibit reduced melt strength, leading to processing difficulties and compromised product quality. NINGBO INNO PHARMCHEM CO.,LTD. offers advanced chain extenders that serve as a vital solution for enhancing melt strength in plastic extrusion.

Chain extenders are reactive additives that increase the molecular weight of polymers, thereby increasing their melt viscosity and melt strength. This is achieved through coupling reactions that effectively extend or branch the polymer chains. For extrusion processes, improved melt strength means better drawdown capabilities, reduced neck-in, and enhanced stability of the extrudate, leading to more consistent product dimensions and fewer defects. Manufacturers relying on extrusion processes can significantly benefit from incorporating these specialized additives.

NINGBO INNO PHARMCHEM CO.,LTD., a prominent supplier and manufacturer in China, provides high-performance chain extenders tailored for various polymers, including those commonly processed via extrusion. Our additives are designed to be highly reactive yet controllable, ensuring they effectively boost melt strength without causing undesirable side effects like excessive gel formation. This makes them an ideal choice for improving plastic chain extenders for extrusion applications.

The mechanism involves the chain extender reacting with the functional end groups of polymer chains, such as carboxyl (-COOH) or hydroxyl (-OH). This reaction builds longer polymer chains, which increases entanglement and resistance to flow under shear and tensile stress – the essence of melt strength. For recycled plastics, which have often undergone chain scission, chain extenders are particularly crucial in restoring the necessary melt strength to make them viable for extrusion.

Using our chain extenders in extrusion processes leads to several tangible benefits. Firstly, it allows for higher processing speeds and throughput. Secondly, it enables the use of lower viscosity resins or higher percentages of recycled content, contributing to cost savings and sustainability goals. Thirdly, it results in improved surface finish and dimensional accuracy of the extruded products, reducing scrap rates and enhancing overall product quality. These benefits collectively contribute to a more efficient and profitable manufacturing operation.

As a leading provider in the field, NINGBO INNO PHARMCHEM CO.,LTD. is committed to delivering innovative solutions that enhance polymer processing. Our chain extenders are a testament to this commitment, offering a reliable way to improve melt strength for critical extrusion applications. We encourage manufacturers to explore the advantages our products offer and consider them as a key component for optimizing their extrusion processes and achieving superior end products.