Overview
GB Standard Recycled Material encompasses reprocessed plastics, metals, or other materials that adhere to China's national quality and safety standards (GB/T). These materials are derived from post-industrial or post-consumer waste, processed to meet specific performance criteria. Their use aligns with circular economy principles, reducing reliance on virgin resources. Common base polymers include polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET). Buyers must ensure suppliers provide GB/T certification to guarantee consistency in mechanical properties and impurity thresholds.
Physical and Chemical Properties
The properties of GB Standard Recycled Material depend on the base polymer and recycling process. For instance, recycled PET exhibits high tensile strength and thermal stability (up to 250°C), making it suitable for food-grade packaging after thorough cleaning. Density ranges from 0.9 g/cm³ (for PP) to 1.4 g/cm³ (for PVC). Moisture content is a critical parameter, often kept below 1% to prevent degradation during reprocessing. Additives like stabilizers may be blended to enhance UV resistance or flexibility.
Main Applications
In packaging, recycled PE and PP are used for non-food containers, pallets, and stretch films. The automotive industry incorporates these materials into dashboards, insulation, and carpet fibers. Construction applications include drainage pipes (recycled PVC) and insulation boards. Textile manufacturers convert recycled PET into polyester fibers for clothing and carpets. Strict GB standards ensure performance comparable to virgin materials in non-critical applications.
Safety and Storage
GB Standard Recycled Materials are generally non-hazardous but require proper handling. Dust generated during cutting or grinding may irritate respiratory systems; PPE like masks is recommended. Storage should avoid high humidity to prevent clumping or microbial growth. Keep away from open flames, as some polymers are flammable. Suppliers must provide Material Safety Data Sheets (MSDS) detailing specific handling guidelines.
B2B Procurement Guide
When sourcing, prioritize suppliers with GB/T and ISO 9001 certifications. Request third-party lab reports testing tensile strength, melt flow index, and contaminant levels (e.g., heavy metals). For bulk orders, negotiate pricing tiers (e.g., discounts for 20+ tons). Logistics should account for moisture-proof packaging during transit. Sample testing is advised to verify consistency in color and granule size.
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