PET (Polyethylene Terephthalate) is an engineering plastic with high mechanical strength, excellent wear resistance, chemical resistance, and high thermal stability. It is harder and more durable than many other plastics, with good electrical insulation properties and low moisture absorption. Due to its stability, safety, and high recyclability, PET is widely used in the production of plastic bottles, food packaging, electronic components, mechanical parts, and medical applications.
Characteristics and Features:
Good Mechanical Strength and Stiffness: Withstands tensile and impact forces relatively well.
Good Dimensional Stability: Less prone to shrinkage or deformation.
Good Chemical Resistance: Resistant to many weak acids, alkalis, and solvents.
Good Electrical Insulation: An electrical insulator.
High Transparency (with transparent PET): Can achieve transparency equivalent to glass.
Good Machinability: Can be cut, milled, drilled, and turned.
Relatively Good Abrasion Resistance: Better than some common plastics.
Food Safe: Approved for food contact applications.
Corresponding CNC Technologies:
CNC Milling: Suitable for creating complex shaped parts, cutting grooves, and drilling holes in PET sheets or blocks.
CNC Turning: Cylindrical parts, shafts, or bushings can be turned from PET stock.
CNC Routing: Used to cut PET sheets into 2D shapes, commonly used for signs, fixtures, or flat parts.
Notes:
Conclusion: Engineering plastic PET is commonly CNC machined to create machine parts, fixtures, molds, electronic components, and other applications requiring good strength, dimensional stability, and chemical resistance.
