The basic information and Advantages of PET sheet

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The basic information and Advantages of PET sheet

PET (Polyethylene terephthalate) is a general-purpose thermoplastic in the polyester family. Clear Rigid Pet Sheet is lightweight, strong and impact-resistant. It is often used in food processing machinery due to its low moisture absorption, low thermal expansion, and chemical resistant properties.

 What are advantages of PET?

  • It has higher strength and stiffness than PBT
  • It is very strong and lightweight & hence easy and efficient to transport
  • It is known for its good gas (oxygen, carbon dioxide) and moisture barrier properties
  • It exhibits excellent electrical insulating properties
  • PET has broad range of use temperature, from -60 to 130°C
  • As compared to PBT, it also has higher heat distortion temperature (HDT)
  • It has low gas permeability, in particularly with carbon dioxide
  • PET is suitable for transparent applications, when quenching during processing
  • PET doesn’t not break or fracture. It is practically shatter-resistant and hence, a suitable glass-replacement in some applications
  • It is recyclable and transparent to microwave radiation
  • PET is approved as safe for contact with foods and beverages by the FDA, Health Canada, EFSA & other health agencies


What is the disadvantages of PET?

  • Lower impact strength than PBT 
  • Lower moldability than PBT, due its slow crystallization rate 
  • Affected by boiling water 
  • Attacked by alkalis and strong bases 
  • Attacked at high temperatures (>60°C) by ketones, aromatic and chlorinated hydrocarbons and diluted acids and bases 
  • Poor burning behavior


What are the main applications of PET?

Polyethylene Terephthalate is used in several packaging applications as mentioned below:

  • Because Polyethylene Terephthalate is an excellent water and moisture barrier material, plastic bottles made from PET are widely used for mineral water and carbonated soft drinks
  • Its high mechanical strength, makes Polyethylene Terephthalate films ideal for use in tape applications
  • Non-oriented PET sheet can be thermoformed to make packaging trays and blisters
  • Its chemical inertness, together with other physical properties, has made it particularly suitable for food packaging applications
  • Other packaging applications include rigid cosmetic jars, microwavable containers, transparent films, etc.

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