Guangzhou Donoyo Chemical Co., Ltd

Recycled plastic modification represents an advanced technical process where post-consumer plastics are enhanced through physical and chemical methods to improve their performance characteristics. This sophisticated processing enables modified recycled materials to achieve properties that approach, equal, or even exceed those of virgin plastics, facilitating their reuse in various high-quality plastic products. A prominent example of this technology is wood-plastic composite material, an innovative environmental product prepared by blending waste wood with recycled plastic, supplemented with compatibilizers and processing aids. This composite material has gained widespread application in municipal construction projects, including urban garden landscapes and ground paving systems, demonstrating the practical implementation of circular economy principles. The modification process addresses several challenges inherent to recycled plastics, including material heterogeneity and inferior properties. Key enhancement strategies include blending with reinforcing agents such as glass fibers to improve structural integrity, and incorporating elastomers for enhanced toughness. Further improvements are achieved through the addition of compatibilizers and chain extenders, which improve the compatibility of mixed plastics and increase the molecular weight of recycled materials, thereby enhancing strength properties. Recycled plastic modification technology plays a crucial role in enabling comprehensive waste plastic recycling, contributing significantly to environmental protection efforts and supporting global initiatives for plastic pollution control. This approach not only extends the lifecycle of plastic materials but also creates value-added products from what would otherwise be waste, supporting sustainable development goals across multiple industries

The Global Recycled Standard (GRS) is an internationally recognized, voluntary product certification that ensures recycled material content in products meets specific standards while verifying the environmental friendliness of production processes. Developed by Textile Exchange, this certification system primarily monitors the amount of recycled materials used in products and tracks their source and flow throughout the entire supply chain. Complementing the GRS is the Transaction Certificate (TC), a crucial document that confirms a specific batch of goods complies with GRS standards. Issued by accredited certification bodies, the TC certificate provides proof that products—from raw materials to final goods—adhere to the specific requirements of standards like GRS, establishing a comprehensive production and sales supervision chain system. The primary purpose of GRS certification is to promote recycled material usage, reduce resource waste, and advance circular economy development. Through this certification, companies can ensure transparency in their products' recycled content and sources while meeting environmental protection and social responsibility requirements. The GRS standard encompasses requirements for recycled content, production and sales supervision chains, social and environmental practices, and chemical restrictions. The application process for GRS certification involves two key steps: First, companies must obtain GRS certification by submitting relevant information to certification bodies for comprehensive review. Subsequently, after certification is granted, companies can apply for TC certificates by submitting order contracts and other required documentation, which the certification body issues to verify compliance with GRS standards for specific shipments.

 The recycling workflow of Post-Consumer Recycled (PCR) materials involves several critical stages that transform waste plastics into valuable reusable resources. The process begins with Collection & Sorting, where post-consumer plastics such as packaging materials and bottles are systematically gathered, categorized by polymer type, and thoroughly cleaned to remove all non-plastic contaminants. This initial stage is crucial for ensuring the quality and purity of the recycled material. Following collection, the materials undergo Shredding, where cleaned plastics are mechanically crushed into smaller, uniform fragments. This size reduction facilitates more efficient processing in subsequent stages. The shredded materials then proceed to Melting & Purification, where they're heated to a molten state under carefully controlled temperatures. During this phase, any remaining impurities are systematically filtered out, ensuring the material meets quality standards for reuse. The final processing stage is Pelletization, where the purified molten plastic is extruded and cut into uniform pellets. These standardized pellets are ready for reuse in manufacturing processes, completing the transformation from waste material to valuable resource. Certification Requirements play a vital role in ensuring the integrity of PCR materials. To comply with sustainability standards like the Global Recycled Standard (GRS), final products must contain a minimum threshold of PCR content, typically starting at 20%. The certification process involves comprehensive traceability audits and verification of the entire recycling chain's integrity, providing assurance of the material's origins and processing history.

Plastic pollution impacts the environment and human health in multiple ways: Visual Pollution: Discarded plastics degrade urban and natural landscapes. Marine Pollution: Marine animals ingest or entangle in plastic debris, causing injury and death. Soil Pollution: Plastics in farmland hinder crop growth and reduce yields; they also leach toxins into groundwater. Microplastic Pollution: Persistent microplastics enter the food chain and pose health risks. To reduce plastic pollution, individuals can: avoid single-use plastics, use reusable bags and utensils, support green packaging, participate in recycling, and raise environmental awareness.