Polyethylene Terephthalate, which is one of the most widely used thermoplastic polymers in the world, is used to make all kinds of bottles. In the textile industry, this polymer is known as polyester. In the food and beverage packaging industry, it is referred to as PET or PET resin. In the past, another type called PET-P was used in the clothing industry, which has almost stopped being used today.

Polymers widely used in making bottles
Polyethylene terephthalate (PET) is a polymer that is used in most countries to produce polyester fibers (70 percent), bottle resin (22 percent), film (6 percent) and engineering polyester resins (2 percent), but in Iran this polymer It is mostly used to make all kinds of drinking bottles. Due to the high resistance of these bottles against breakage, temperature and gas penetration, low weight and cheap price compared to other packaging materials such as glass and metal, the production of plastic bottles from this material has found wide use.

Characteristics of granular pet
Granule PET is a suitable waterproofing agent. Granule PET is a safe, strong, light, flexible and non-toxic material that can be easily recycled. The presence of all these features in one product has attracted the attention of all people working in the field of packaging to this product. Among the features that have led to the use of this product in the packaging of food and beverages, we can mention its lightness, strength, preservation of health and freshness of the product, and the fact that it cannot be crushed. One of the main uses of this product is its use in mineral water and carbonated soft drinks.

Advantages and disadvantages of granule PET (polyethylene terephthalate)
These polymers are easily available and cheap.
PET polymers are resistant to moisture and organic substances, water and chemicals.
The ratio of their resistance to their weight is very high.
They are very transparent and unbreakable. (They don’t break like glass packages.)
Polyethylene tereflat is easily recyclable. PET plastic is one of the types of recycled plastics that are used to produce products such as containers, sleeping bag insulation, polyester fabrics and carpets, etc.
PET plastics are not biodegradable. This can be good or bad depending on their application.
PET polymer has lower thermal resistance than other polymers.
1- Polyethylene terephthalate BG781
Polyethylene terephthalate (BG781 (BG780S) is a bottle-grade polyethylene terephthalate (PET) produced during the process of continuous melt polymerization along with solid state polymerization. BG781 material has excellent transparency and gloss and very good toughness and is resistant to oxygen penetration And carbon dioxide is very resistant.Its applications are in oil and mineral water bottles and all kinds of small jars.

Feature Pat BG781
It has excellent transparency and gloss and very good toughness and is very resistant to the penetration of oxygen and carbon dioxide.

Application of PET BG781
Bottles of mineral water, edible oil

2- Polyethylene terephthalate BG825
Polyethylene terephthalate (BG825 (BG820N) is a bottle-grade polyethylene terephthalate (PET) produced during the process of continuous melt polymerization along with solid state polymerization. And carbon dioxide is very resistant.Its applications are in carbonated beverage bottles.

Feature Pat BG825
It has excellent transparency and gloss and very good toughness and is very resistant to the penetration of oxygen and carbon dioxide.

Application of PET BG825
Bottles of carbonated drinks

Conclusion
Polymer materials are widely used in the production of nylon and also in the production of disposable containers and bottles. In this article, we got to know the most commonly used grades in bottle making.

Different polymer grades are used to produce nylon. In this article, we are going to investigate the widely used polymer grades in the production of nylon types.

1- 2100 light polyethylene
Polyethylene 2100TN00 or material 2100 is a film-grade light polyethylene that is used to produce high durability films and high strength packaging liners.

Features of polyethylene 2100
High durability and high strength

Application of 2100 materials
To produce movies

2- Light polyethylene 0190
Material 0190 or polyethylene LF0190 is a film-grade light polyethylene with high molecular weight, which is used to produce various films and types of liners.

Features of polyethylene 0190
High molecular weight

Application of materials 0190
It is used to produce nylon and polyethylene film.

3- Light polyethylene 2101TN
Polyethylene 2101TN47 or 2101TN material is a film grade light polyethylene. This grade has no additives and has high tensile and toughness properties.

Features of polyethylene 2101TN
High tensile properties and toughness

Application of 2101TN materials
To produce high-speed shrink films

4- Light polyethylene 2420E
Polyethylene 2420E or 2420E material is a light polyethylene (LDPE) which is used for the production of packaging and shrink films due to its high transparency.

Features of polyethylene 2420E
High transparency

Application of 2420E materials
To produce shrink films

5- Light polyethylene 0075
Polyethylene LH0075 is a film grade light polyethylene. 0075 material, having good mechanical properties, is used for the production of food, pharmaceutical, shrink and industrial packaging films, as well as air molding of small bottles.

Feature of light polyethylene LH0075
Good mechanical properties

Application of material 0075
It is used to produce all kinds of polyethylene films, such as shrink film, big and small bottles that hold medicine and chemicals, food packaging, etc.

6- Linear style polyethylene 235F6
Polyethylene 235F6 is a linear light polyethylene (LLDPE) produced by gas process. 235F6 material is used for the production of agricultural, industrial and food films due to its good mechanical properties and processability.

Features of polyethylene 235F6
Melt strength and high tensile strength

Application of 235F6 materials
Different types of agricultural films and tapes

7- Linear light polyethylene 22B02
Polyethylene 22B02 or material 22B02 is a linear light polyethylene (LLDPE) which is used to produce all kinds of films for industrial and food packaging due to its strength and high tensile properties.

Features of polyethylene 22B02
High strength, low density

Application of material 22B02
To produce all kinds of films for industrial and food packaging

8- Light linear polyethylene 0209KJ
Polyethylene LL0209KJ or material (0209KJ (209) is a light linear polyethylene with normal butene and contains antioxidant and antiblock additive. This grade is used for general purposes of producing all kinds of films (Film) and is often mixed with other polyethylene grades. Light ethylene is used.The resulting films have more tensile strength and tear resistance by adding this grade.

Feature of linear light polyethylene 0209KJ
Higher tensile strength, better sealing

Application of 0209KJ materials
For the production of food, industrial and agricultural packaging films

9- heavy polyethylene EX5
EX5 material or polyethylene (EX5 (9450F) is a heavy polyethylene (HDPE) with a high molecular weight copolymerized with 1-butene. Its high tensile strength makes it suitable for the production of all kinds of plastic bags and packaging films.

Feature PE EX5
High molecular weight copolymerized with 1-butene and high tensile strength

Application of EX5 materials
Disposable gloves, freezer bags, food and fruit bags, garbage bags

10- F7000 heavy polyethylene
Material F7000 (polyethylene 7000F) is a heavy polyethylene for producing very thin films. Polyethylene or polyethylene is one of the simplest and cheapest polymers, and polyethylene is a waxy and inactive solid. This material is obtained from the polymerization of ethylene and is briefly shown as PE.

F7000 polyethylene feature
High molecular weight and high film strength

Application of F7000 material
Advanced Ultra Thin Film
single-use glove
freezer bag
Bag for carrying food and fruit
garbage bag
Medical Gowns
Making safety equipment
Construction of water tanks
Making toys
Making pipes and fittings
Production of plastic parts