This article explains how to properly design and operate pneumatic conveying and feeding systems for powdered calcium carbonate (CaCO₃) in plastic compounding. It highlights the challenges caused by particle interactions and varying material properties, emphasizing the need for customized systems. Key considerations include material flow behavior, equipment selection (such as rotary valves, hoppers, and feeders), and process optimization to ensure stable performance, accurate dosing, and efficient plant operation.

This article explains how to choose suitable carrier resins for color masterbatches in TPE (thermoplastic elastomer) pelletizing based on application scenarios. It emphasizes key selection criteria such as compatibility, processing temperature, performance impact, and cost-efficiency. Specific carriers like LDPE, PP, PS, EVA, and SEBS are recommended for different TPE uses—ranging from toys and automotive parts to medical tubing and food-grade products. It also highlights considerations for pigment-carrier matching, masterbatch concentration, and processing optimization.

This article outlines four key considerations when selecting plastic additives. First, the compatibility between additives and polymers is crucial to ensure uniform mixing and long-term stability. Second, additives must withstand the processing conditions, especially high temperatures. Third, the synergy or antagonism between multiple additives can significantly impact performance. Finally, the intended use of the plastic product—such as food packaging or medical applications—places strict requirements on the toxicity and extractability of the additives.

This article explains why recycled plastics are often more expensive than virgin plastics, highlighting three main reasons: high processing costs, the need for property-enhancing additives, and expensive certifications. Despite the higher price, companies use recycled plastics to meet environmental regulations, improve ESG image, and satisfy global market demands.

Although recycled plastics are seen as a key solution to pollution and circular economy goals, they face limited adoption due to high costs, weak policies, technical bottlenecks, market resistance, and low consumer acceptance. Breaking through requires stronger regulations, technological innovation, supply chain coordination, and consumer incentives to shift from "concept popularity" to real market demand.

The quality of black masterbatch is primarily determined by four key factors: dispersion, coverage, flowability, and compatibility. High dispersion ensures uniform color and optimal performance, especially for fine films and fibers. Strong coverage is crucial for masking recycled material colors, requiring high-tint carbon black. Good flowability ensures smooth molding, while poor rheology can cause defects. Lastly, using high-quality carrier resins ensures compatibility and avoids processing issues. Together, these factors determine the masterbatch’s performance, cost-efficiency, and application reliability.

This article discusses the value and feasibility of reusing recycled TPR (Thermoplastic Rubber) shoe sole materials. It highlights the benefits of resource conservation, environmental protection, economic savings, and policy support. The article also explains why TPR materials are suitable for reuse, emphasizing their thermoplastic properties, adjustable physical performance, and strong chemical stability, which enable multiple cycles of recycling and reshaping without significant degradation in quality.

This article provides a comprehensive overview of the temperature-related properties of TPE materials, including their brittleness temperature, heat distortion temperature, melting temperature, drying temperature, processing temperature, mold temperature, decomposition temperature, container tolerance temperature, and service temperature. It aims to give industry professionals a thorough understanding of elastomer performance under various temperature conditions. Additionally, the article introduces four common types of TPE materials—styrenic elastomer SBS, thermoplastic polyurethane (TPU), thermoplastic polyolefin (TPO), and thermoplastic polyester elastomer (TPEE)—along with their basic properties and applications.

This article outlines 12 common shoe sole materials, comparing their durability, flexibility, breathability, and resistance to wear, water, and temperature. Each material has unique advantages suited for different shoe types and uses.

This article discusses the selection principles and specific applications of plastic additives. Additives should be chosen based on the intended purpose, ensuring they can fully perform their functions and meet the required standards and performance specifications. Various types of additives and their applications are listed, including toughening, reinforcing, flame retardant, antistatic, conductive, magnetic, thermal conductivity, heat resistance, transparency, wear resistance, insulation, and barrier properties. The selectivity of additives for different resins is also addressed, highlighting the effectiveness of red phosphorus, nitrogen-based flame retardants, nucleating agents, and glass fiber heat resistance modifiers for specific resins. For example, red phosphorus is effective for PA, PBT, and PET, while nucleating agents work well for copolymer polypropylene.