Polyethylene Terephthalate (PET)

Polyethylene terephthalate(PET) is a general-purpose plastic made through polycondensation of PTA with ethylene glycol (EG). PET is a hard, stiff, strong, dimensionally stable material that absorbs very little water. PET is Considered to be the Environment friendly Polymer, unlike other plastics and polymers

Depending on its processing and thermal history, polyethylene terephthalate may exist both as an amorphous (transparent) and as a semi-crystalline polymer. The semicrystalline material might appear transparent (particle size < 500 nm) or opaque and white (particle size up to a few microns) depending on its crystal structure and particle size. Its monomer (bis-β-hydroxyterephthalate) can be synthesized by the esterification reaction between terephthalic acid and ethylene glycol with water as a byproduct, or bytransesterification reaction between ethylene glycol and dimethyl terephthalate with methanol as a by product. Polymerization is through a polycondensation reaction of the monomers (done immediately after esterification/transesterification) with ethylene glycol as the byproduct (the ethylene glycol is directly recycled in production).

This material has many outstanding properties: resistance to both heat and cold, transparency, electrical qualities, chemical proof and abrasion prof ; For all these reasons, it is finding a wide variety of applications in the fibers(for a very wide range of textile and industrial uses), electrical components ,PET bottle and films(used for capacitators, graphics, film base and recording tapes etc).

Features & Benefits

Balance of strength, stiffness and toughness, excellent electrical properties, surface appearance and chemical resistance.

  • Very good resistance to most chemicals, moisture, oil, and grease.
  • Excellent barrier against a wide range of gases.
  • Balance of strength,
  • stiffness and toughness,
  • excellent electrical properties,
  • surface appearance (Aesthetic appeal, Optically brilliant, good clarity.)
  • Low moisture absorption
  • Low thermal expansion
  • Stain resistance
  • Physiologically inert (suitable for food contact)
  • Good resistance to high energy radiation (gamma- and X-rays)

Applications

Thermoforming And Packaging

Thermoforming and vacuum forming of food containers, chocolate tray, biscuit trays, egg trays, vegetable trays, sandwich boxes etc. Film for flexible pouches, peel-able seals, lids, snacks, barrier films, can laminations, and vacuum insulation panels.

Industrial & Specialties

Metalizing and printing for industrial packing, Hot stamping foil, adhesive tapes, release films, photo resist films, metallic yarns, plastic cards (including "smart" cards), labels, lamination films, brightness enhancement films (for computer screens), solar UV films, safety window films, medical test strips, and other uses.

Electrical

Motors wires and cables : Motor slot insulations, transformer insulation films, capacitors, thermal printing tapes, and flexible printed circuit films.

Imaging

Microfilm, printing and pre-press films, color proofing, printing plates, drawing office drafting film, overhead transparencies, X-ray films, instant photos, business graphics, and wide format displays.

Magnetic

Videotape, audio cassette tape, floppy disks, and advanced high-density computer storage media.