1.PETE : Polyethylene Terephthalate (commonly known as Polyester)

• A clear, rather tough plastic that serves as a fairly good barrier to gas and moisture, and can stand up to reasonably high temperatures. As a result, it is commonly found in food containers. Most notably, soft drinks and water bottles.
• It is very highly recycled, as it has many high-demand uses.
• Highly safe and doesn't interact with any kind of food or dressings.

2.HDPE:(High Density Polyethylene)

• A gas permeable plastic that is stiff, inexpensive, and resistant to a wide variety of chemicals and moisture.
• In the absence of dyes, HDPE is translucent; making it a useful plastic container for food items, but its gas permeability limits its uses to products with a relatively short shelf life.
• Milk, yogurt and juice containers are commonly made from HDPE.
• As HDPE is stable in the presence of a wide variety of chemicals, it is used regularly for household cleanser containers.
• HDPE can be widely recycled.

3.PVC (Polyvinyl Chloride) commonly known as "Vinyl"

• Vinyl is exceptionally versatile, and it retains its strength, even when made flexible.
• It is tough and stable when exposed to electrical current, flexible vinyl is used very commonly for wire insulation.

4.LDPE (Low Density Polyethylene)

• LDPE is fairly tough and transparent, but is not very resistant to heat.
• LDPE is used most commonly in the applications that use a normally rigid, but thin layer of plastic in a way that cloth might be used.
• LDPE is recycled fairly

5.PP (Polypropylene - Polypropylene)

• PP has exceptional resistance to chemicals and bears the lowest density of the plastics commonly used in packaging.
• It has a relatively high melting point, making it an ideal plastic for hot-fill liquids.

6.PS (Polystyrene )

• Polystyrene is a more commonly known as Styrofoam, only one of its possible forms. Styrofoam is (rather obviously) a foamed version of polystyrene that is used very commonly in food packaging.
• Styrofoam makes its way into cups, egg cartons, plates and peanuts on a fairly regular basis.
• In spite of its acceptance as a container for prepared food and beverages, polystyrene has a low melting temperature
• Polystyrene is easily recycled.
• NOT RECOMMENDED FOR FOOD PACKING AS IT CAN BE CARCINOGENIC. 

• Coated with food graded material to prevent any contact or reaction between the food and the pack.
• Can be sealed easily.
• Microwaveable up to 3 min.
• Heat Resistant.
• Improve physical properties of PS by keeping its consistency at the same time avoid hazards resulted from PS contact with food.