Monday, March 3, 2025

கொஞ்சம் கெமிஸ்ட்ரி ! - EP.018

Here are the common types of plastic used in packaging:

  1. Polyethylene Terephthalate (PET or PETE)

    • Properties: Lightweight, strong, transparent

    • Uses: Beverage bottles, food jars, microwaveable food trays

  2. High-Density Polyethylene (HDPE)

    • Properties: Strong, resistant to moisture and chemicals

    • Uses: Milk cartons, detergent bottles, cereal box liners

  3. Polyvinyl Chloride (PVC)

    • Properties: Hard, rigid, resistant to chemicals and weathering

    • Uses: Blister packaging, cling wraps, food foils

  4. Low-Density Polyethylene (LDPE)

    • Properties: Flexible, transparent, resistant to oils and acids

    • Uses: Plastic bags, stretch film, squeezy condiment bottles

  5. Polypropylene (PP)

    • Properties: High melting point, chemical resistance, low moisture transmission

    • Uses: Medicine bottles, yogurt containers, take-out food containers

  6. Polystyrene (PS)

    • Properties: Lightweight, rigid, insulating

    • Uses: Disposable cutlery, foam cups, food containers

  7. Polycarbonate (PC)

    • Properties: Strong, transparent, impact-resistant

    • Uses: Reusable water bottles, food storage containers, eyewear lenses

  8. Polyethylene (PE)

    • Properties: Versatile, durable, resistant to chemicals

    • Uses: Grocery bags, shrink wrap, bottle caps

  9. Polyamide (Nylon)

    • Properties: Strong, flexible, resistant to abrasion

    • Uses: Vacuum packaging, meat and cheese packaging

  10. Ethylene Vinyl Alcohol (EVOH)

    • Properties: Excellent barrier to gases and odors

    • Uses: Food packaging, especially for perishable items

  11. Polyethylene Naphthalate (PEN)

    • Properties: High strength, excellent barrier properties

    • Uses: Beverage bottles, food containers

  12. Polylactic Acid (PLA)

    • Properties: Biodegradable, compostable

    • Uses: Food packaging, disposable cutlery, compostable bags

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கொஞ்சம் கெமிஸ்ட்ரி ! - EP.019

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