What is high-density polyethylene?

High-density polyethylene (HDPE) is a white powder or granular product. It is non‑toxic and odorless, with a crystallinity of 80%–90%, a softening point of 125–135°C, and a service temperature that can reach 100°C. Compared with low-density polyethylene, it exhibits superior hardness, tensile strength, and creep resistance; it also offers good wear resistance, electrical insulation, toughness, and cold resistance. HDPE demonstrates excellent chemical stability: at room temperature, it is insoluble in any organic solvent and resistant to corrosion by acids, bases, and various salts. Its films have low permeability to water vapor and air and exhibit minimal water absorption. However, its aging resistance is poor, and its resistance to environmental stress cracking is inferior to that of low-density polyethylene; in particular, thermal oxidation tends to degrade its performance.

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The differences between PVC and PE materials, as well as the applications of each material.

1. Differences in applications: Polyethylene (PE) applications: cling film, vest‑style plastic bags, plastic food bags, buckets, water bottles, and more. Polyvinyl chloride (PVC) applications: cling film, plastic shoes and leather goods, thin films, cables, and plastic bags. 2. Different characteristics: Polyethylene (PE) feels waxy to the touch; compared with other plastics of similar type, it is relatively lightweight and somewhat transparent. Polyvinyl chloride (PVC): a rigid plastic commonly used in industrial applications. 3. Material property differences: Polyethylene, abbreviated as PE, is a polymer of ethylene and is non‑toxic. It is easy to color, exhibits good chemical stability, and is resistant to…

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3 Tips for Color in Print Design

Whether it’s graphic design or web design, color is always the most crucial element. When we’re standing at a distance from the screen, what we notice isn’t the elegant layout or the beautiful images—it’s the colors of the webpage. There are many principles behind color theory, and it’s impossible to cover them all here. Readers can consult relevant design books for a more systematic understanding. For now, we’d like to share just a few practical tips for choosing color schemes in web design. 1. Stick to a single color. Start by selecting one base color, then adjust its opacity or saturation. This approach creates a cohesive, well‑structured page with visual depth.

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What’s the difference between “PVC” and “PE”?

1. Applications Polyethylene (PE) applications: cling film, vest‑style plastic bags, plastic food bags, buckets, water bottles, and more. Polyvinyl chloride (PVC) applications: cling film, plastic shoes and leather goods, thin films, cables, and plastic bags. 2. Characteristics Polyethylene (PE) feels waxy to the touch; compared with other plastics of similar type, it is relatively lightweight and somewhat transparent. Polyvinyl chloride (PVC) characteristics: a rigid plastic commonly used in industrial applications.

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