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We all know that ordinary PE materials have excellent acid and alkali corrosion resistance, but they cannot withstand very high temperatures. However, customers have an increasing demand for high-temperature coating materials, especially in the application of high-temperature chemical liquids and high-temperature slurry transportation.

​On May 16, 2025, our company participated in the "China Plastics Association Rolling Plastic Special Committee 2025 Annual Meeting" held in Xingtai, Hebei Province.

On July 4th, Dongguan, Guangdong became a focal point for rotational molding technology. Our company, together with Sunrise Rotational Molding, Shanghai Jiechuang, and Zhenhai Refining and Chemical, held the 8th Rotational Molding Technology Festival. From morning till night, the venue was lively and filled with an atmosphere of exchange and learning.

At present, in the selection of inserts, most of them use: 1. brass; 2. Zinc aluminum alloy; 3. Stainless steel (anti-corrosion, corrosion-resistant);Defect Solution | Rolling Plastic Fuel Tank Science Popularization -2- Principle and Solution of Coating Problem ② Temperature and Embedded Parts (Expert Article) At present, in the selection of inserts, most of them use: 1. brass; 2. Zinc aluminum alloy; 3. Stainless steel (anti-corrosion, corrosion-resistant); The basic components of embedded assembly are: 1. Embedded screws; 2. Mold cavity wall; 3. Embedded components; Material selection for inserts: 1. Good thermal conductivity; 2. Sufficient mechanical strength (details will be elaborated in the next section).

Among rotomolding materials, Nylon 12 (PA12) stands out with its unique performance combination. As a key member of the long-carbon-chain nylon family, Nylon 12 features longer molecular chains and lower amide bond density, resulting in an extremely low water absorption rate of approximately 0.25% — the lowest among all nylon products. Additionally, it boasts low density, excellent low-temperature toughness, and outstanding oil and chemical resistance. It maintains good toughness even in extreme cold environments as low as -70°C, with a long-term service temperature reaching 80-90°C.

Roto grade elastic materials have revolutionized industrial applications by offering superior flexibility, durability, and performance. In this article, we explore what makes Roto grade materials exceptional, their benefits across different industries, the technical specifications, comparisons with traditional materials, and how companies like Zhejiang Rotoun Plastic Technology Corp. are leading the market with innovative solutions.