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ПСТ — це поліетилен середнього тиску: властивості та застосування

PST stands for medium-density polyethylene. It occupies an intermediate position between high-density polyethylene (HDPE) and low-density polyethylene (LDPE). Thanks to its properties, PST combines flexibility and strength, making it a popular material in the packaging industry.

What is medium-density polyethylene?

PST is produced through the polymerization of ethylene at medium pressure (from 5 to 30 atm) and a temperature of 80–120°C. In terms of its physical and chemical properties, it is closer to LDPE, but has higher density and improved resistance to mechanical stress.

Main properties of PST (medium-density polyethylene)

  • Flexibility – the material bends easily, ideal for thin films;
  • Strength – withstands mechanical loads without tearing;
  • Puncture and stretch resistance – important for packaging;
  • Good weldability – easily sealed and formed into bags;
  • Optical clarity – maintains a clean, aesthetic appearance of the packaging;
  • Chemical resistance – does not react with most substances.

Where is medium-density polyethylene used?

  • Production of polyethylene bags – such as produce bags, T-shirt bags, branded bags;
  • Packaging film for food and technical products;
  • Inserts and sacks for industrial applications;
  • Packaging for textiles, clothing, paper products;
  • Multilayer COEX bags with a PST layer for enhanced strength.

What else do people search for regarding PST polyethylene?

  • properties of medium-density polyethylene;
  • uses of PST polyethylene;
  • differences between LDPE, HDPE, and PST;
  • raw materials for bag production;
  • types of polyethylene and their characteristics.

PST bags from Cherpack

At cherpack.net, you can order polyethylene bags made from PST (medium-density polyethylene). This material is ideal for producing strong, reliable packaging that retains its shape and appearance during transportation. We manufacture bags of any format, color, and thickness — with optional branding and printing.