China Guangzhou Donoyo Chemical Co., Ltd Company News

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.

Recycled PP typically comes from household items like tubs, chairs, buckets, and woven bags. The process involves: Color sorting to enhance value. Crushing, washing, and drying. Mixing with colorants and additives. Extruding into pellets under controlled temperature to prevent brittleness. Water cooling and cutting into standardized 3x4mm pellets for reuse.

 PCR plastics are gaining significant traction in the kitchenware industry as manufacturers align with environmental policies and consumer preferences for sustainable products. These materials provide a practical and economical alternative to single-use biodegradable options such as PLA. PCR pellets are used to produce a variety of kitchenware items including food containers, utensils, cutting boards, and small appliances. They offer reliable supply stability, cost-effectiveness, and a reduced environmental footprint—making them an ideal choice for brands aiming to meet legislative requirements and consumer expectations without compromising quality or functionality.

  GRS certification verifies recycled content and sustainable production practices. Key requirements include: Traceability through the supply chain, with upstream suppliers also needing GRS certification or joint audit. Minimum 20% recycled content; products labeled with GRS logo must contain ≥50%. Audit covers: recycled material verification, social responsibility (e.g., BSCI/SA8000 compliance), chemical management, and environmental systems (energy, water, and waste management).

PCR (Post-Consumer Recycled) plastic is reprocessed from products that have reached the end of their consumer life, such as water bottles, food containers, electronics, and CDs. These materials undergo collection, sorting, cleaning, and reprocessing to become reusable granules. PIR (Post-Industrial Recycled) plastic, on the other hand, originates from manufacturing scrap—including runner systems, rejected products, and production waste—which is recycled directly at the factory. PIR is generally easier to process due to its consistent composition and minimal contamination. While both support sustainability, PCR addresses the larger challenge of consumer waste reduction, while PIR focuses on optimizing industrial resource efficiency.

  Growing awareness of plastic pollution’s impact on ecosystems and human health has accelerated global efforts to reduce plastic consumption. A significant concern is marine plastic pollution—current estimates indicate that approximately 150 million tons of plastic reside in ocean environments, with an additional 8 million tons added each year. Without intervention, plastics could outweigh marine fish by 2050.   In response, the European Union has mandated that by 2025, plastic products must contain at least 25% PCR content. Such policies are driving brands to adopt recycled materials not only to comply with regulations but also to meet consumer demand for sustainable products. Using PCR plastic reduces waste, conserves resources, decreases reliance on virgin fossil fuels, and supports a circular economy.

Recycled plastics are categorized based on resin type and source. The most common types include: Recycled Low-Density Polyethylene (LDPE): Often sourced from plastic films, grocery bags, food packaging, liners, and agricultural mulch films. These materials are typically natural or lightly colored and require sorting before processing. Recycled Polypropylene (PP): Recovered from everyday items such as storage containers, buckets, furniture, woven bags, and packaging tapes. PP is valued for its versatility, durability, and wide range of applications. Recycled Polyethylene Terephthalate (PET): Primarily obtained from post-consumer beverage and food containers. PET is lightweight, shatter-resistant, and energy-efficient to recycle, making it ideal for reuse in textiles, packaging, and engineering applications. Recycled ABS Plastic: Usually reclaimed from electronic housings, household appliances, toys, and mechanical components. It offers good impact strength, surface finish, and structural integrity.

PCR (Post-Consumer Recycled) plastic refers to materials recovered from end-of-life consumer products such as packaging, household items, electronics, and automotive components. In contrast, PIR (Post-Industrial Recycled) plastic is derived from manufacturing waste—including sprues, off-spec products, and production scraps—which are recycled directly within industrial facilities. The key distinction lies in the source and volume: PCR represents a significantly larger waste stream originating from daily consumer activities. Without systematic recycling, post-consumer plastics contribute extensively to annual environmental pollution. Adopting PCR materials effectively addresses this challenge by supporting circular economy principles and reducing landfill waste. Furthermore, regulatory frameworks worldwide are increasingly favoring the adoption of PCR plastics. For instance, the UK’s Plastic Packaging Tax imposes a levy of £200 per ton on packaging containing less than 30% recycled content. Similarly, in China, corporate social responsibility mandates require large enterprises to integrate sustainable materials, prompting both domestic and international brands to prioritize PCR plastics in their manufacturing processes.

  PCR (Post-Consumer Recycled) plastic refers to materials recovered from post-consumer sources such as daily-use chemicals, appliances, and automotive parts after they have served their initial purpose. In contrast, PIR (Post-Industrial Recycled) plastic is derived from industrial waste generated during manufacturing—including scrap, off-spec products, and sprues—which is recycled directly within the factory. The key difference lies in their sources: PCR addresses the massive volume of plastic waste generated by consumers, helping reduce environmental pollution on a large scale. If not recycled, these plastics contribute significantly to pollution each year. PCR materials provide a sustainable solution, and many policies now encourage their use. For instance, the UK’s HMRC has introduced a plastic packaging tax of £200 per ton on packaging with less than 30% recycled content. In China, corporate social responsibility mandates also drive brands to adopt PCR plastics, making them an increasingly vital part of global sustainability efforts.