Polyethylene Terephthalate (PET)

  • Abbreviation: PET Chips
  • Other Name: PET Resin, Polyester Chips
  • Appearance: White granules
  • Main Grade: Bottle Grade & Textile Grade
  • CAS No.: 25038-59-9
  • HS Code: 390769
  • MF: H(OCH2CH2OCOC6H4CO)nOCH2CH2OH
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Polyethylene terephthalate (PET), also commonly known as polyester chips, PET Chips, PET Resin, is prepared by ester exchange between dimethyl terephthalate and ethylene glycol or by esterification between terephthalic acid and ethylene glycol to synthesize dihydroxyethyl terephthalate, and then polycondensation reaction. And it is a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface. It has excellent physical and mechanical properties in a wide temperature range, and its operating temperature can reach 120°C.

PET resin also has good electrical insulation properties, and its electrical properties are still good even at high temperature and high frequency. As a commonly used resin, PET resin has the characteristics of good creep resistance, fatigue resistance, wear resistance and dimensional stability, low wear and high hardness, and has the greatest toughness, electrical insulation properties among thermoplastics Well, less affected by temperature, but poor corona resistance.

Different Grades of PET Resin

PET chips can be divided into bottle grade PET resin, fiber grade PET resin, and film grade polyester chips according to their uses (mainly due to different process indicators). About the brand PET resin, we can supply “JADE”, “Wankai”,”Yisheng”etc. Please check the details information about PET resin granules below:

JADE polyester chips have many characteristics such as non-toxic, odorless, tasteless, high transparency, high strength, good processing performance, etc. At present, this brand PET resin has become the preferred material in the fields of water bottles, beverage bottles, non-beverage bottles, PET sheets, etc.

  • JADE CZ-302 PET resin is for packing bottles, like pure water, natural mineral water, distilled water, drinking water.
  • JADE CZ-318 is for small-package edible oil bottles, liquor bottles, medicine bottles, cosmetics bottles, PET sheets.
  • JADE CZ-333 is for hot-filling bottles, like tea drinks, fruit-juice drinks and other medium type drinks.
  • JADE CZ-328 is for carbonated drinks bottles and 3-gallon, 5 gallon big bottles.
  • JADE CZ-5022 is for making the terylene filament & terylene staple fiber, PET industry film and etc.
ParameterUnitGrade

PET CZ-302

PET CZ-318

PET CZ-333

PET CZ-328

PET CZ-5022

I.V.

dL/g

0.80 ± 0.02

0.83 ± 0.02

0.80 ± 0.02

0.85 ± 0.02

0.64 ± 0.015

Crystallinity

%

≤ 60

≤ 60

≤ 60

≤ 60

—

Content of COOH

mol/t

≤ 26

≤ 26

≤ 26

≤ 26

≤ 30

Content of acetaldehyde

ppm

≤ 1.0

≤ 1.0

≤ 1.0

≤ 1.0

—

Color value

L

—

≥ 83

≥ 83

≥ 83

≥ 82

≥ 75

B

—

≤ 1.0

≤ 1.0

≤ 1.0

≤ 1.0

4.0 ± 2.0

Dust content

ppm

≤ 100

≤ 100

≤ 100

≤ 100

30

Melting point

℃

243 ± 2

243 ± 2

250 ± 2

243± 2

259 ± 2

Wt. of 100 chips %

g

1.55 ± 0.10

1.55 ± 0.10

1.55 ± 0.10

1.55 ± 0.10

—

Water content

wt%

≤ 0.2

≤ 0.2

≤ 0.2

≤ 0.2

≤ 0.4

Wankai PET resin can be widely used in various food and beverage industries. The resin has excellent properties such as durability, safety, high transparency, recyclability and excellent barrier properties. The following are detailed applications of PET resin material for food safety.

  • Water bottles. It is the first choice for water bottles because of its light weight and ability to maintain the purity and taste of water.
  • Tea bottles and seasoning bottles. The resin material is able to provide a strong and transparent container that can maintain the flavor and freshness of tea and other seasoning beverages.
  • Edible oil bottles. This PET plastic product provides a non-reactive and sealed container that prevents oxidation and contamination of edible oils.
  • Transparent containers. The PET resin can be used to produce transparent containers for various foods.

Product Type

Acetaldehyde Content (ug/g) 

Intrinsic Viscosity (dL/g)

Melting point (℃)

Recommended Applications

WK-801

≤1.0

0.80± 0.015

247±2

Water bottles, snack bottles, cosmetics bottles, etc.

WK-801L

≤1.0

0.77± 0.015

247±2

WK-811

≤1.0

0.79± 0.015

251±2

Tea bottles, flavouring bottles, etc. 

WK-811L

≤1.0

0.76± 0.015

251±2

WK-821

≤1.0

0.83± 0.015

245±2

Edible Oil bottles, medical bottles, etc.

WK-851

≤1.0

0.88± 0.015

245±2

Sparkling beverage and CSD bottles

WK-881

≤1.0

0.87± 0.015

244±2

WK-901

≤1.0

0.87± 0.015

240±2

Big size bottles

WK-781

≤1.0

0.78± 0.015

245±2

Transparent containers

Different viscosities and material properties make Wankai PET resin suitable for making chemical fiber clothing, BoPET film or solar panel film.

Product Type

Acetaldehyde Content (ug/g)

Intrinsic Viscosity (dL/g)

Melting point (℃)

Recommended Applications

WK-601

≤100

0.600± 0.02

248±2

Base PET for WK-801 and WK-801L

WK-611

≤100

0.600± 0.02

253±2

Base PET for WK-811 and WK-811L

WK-621

≤100

0.600± 0.02

247±2

Base PET for WK-821 

WK-681

—–

0.645± 0.01

254±2

Film for solar panel

WK-711

—–

0.720±0.015

250±2

Enhanced film for solar panel

WK-631

—–

0.645±0.010

254±2

BOPET film and fiber/filament yarn

PET (Bottle Grade) Resin Specification

NO

ITEM

UNIT

YS-W01

YS-H01

YS-Y01

YS-C01

YS-C02

Water Grade

Hot Fill Grade

Oil Grade

CSD Grade

Fast Reheat Grade

1

Intrinsic Viscosity

dl/g

0.800

0.780

0.830

0.875

0.870

± 0.015

± 0.015

± 0.015

± 0.015

± 0.015

2

Melting Point

° C

249 ± 2.0

253 ± 2.0

248 ± 2.0

249 ± 2.0

246 ± 2.0

(DSC method)

3

Carboxyl End Group

mmol/kg

≤35

4

Moisture Content

% wt

≤0.4

5

Color

b-value

—

≤1.0

≤1.0

≤1.0

≤1.0

≤1.0

L-value

—

≥82

≥82

≥82

≥82

≥82

6

Diglycol

% wt

1.3 ± 0.2

1.3 ± 0.2

1.3 ± 0.2

1.3 ± 0.2

1.3 ± 0.2

7

Acetaldehyde Content

µg

≤10

8

Powder

mg/kg

≤100

9

Density

g/cm³

1.39 ± 0.01

10

Ash Content

% wt

≤0.08

11

Granule Weight

100/g

1.55 ± 0.10

Bottle grade polyester resin has a uniform crystal structure and narrow molecular weight distribution; non-toxic, odorless, glass-like transparency and luster; good impact toughness and high strength; low gas permeability (that is, good barrier performance), can Extend the shelf life of beverages; simple processing, small dimensional change or small creep under load; compared with glass, it has many characteristics of light weight and good safety.

The end use of bottle grade polyethylene terephthalate resin is primarily determined by intrinsic viscosity (IV). PET chips with IV 0.80 are mainly used in drinking water bottles and mineral water bottles. PET flakes with an IV of 0.85 are mainly used to make carbonated beverage bulk bottles and 3-5 gallon water bottles because these bottles should have good strength and high pressure resistance. PET resin bottle grade has the characteristics of low processing temperature, wide processing range, good transparency and high yield.

Item

Water Bottle Grade

Oil Bottle Grade

Carbonated Bottle

Hot-Filled Bottle

Intrinsic Viscosity, dL/g

0.800±0.015

0.830±0.015

0.875±0.015

0.780±0.015

Acetaldehyde, ppm ≤

1.0

1.0

1.0

1.0

Color

B value ≤

1.0

1.0

1.0

1.0

L value ≥

84

84

80

80

Diglycol, %

1.30±0.2

1.3±0.2

1.3±0.2

1.3±0.2

Terminal Carboxyl, mol/t ≤

35

35

35

35

Density, g/cm3

1.40±0.01

1.40±0.01

1.40±0.01

1.40±0.01

Melting point, ℃

243±2

243±2

243±2

249±2

Moisture, % ≤

0.2

0.2

0.4

0.4

Ash, % ≤

0.08

0.08

0.08

0.08

In general, high quality PET resin (silica and titania free) can be used to make PET films. Film grade polyester chips are usually available in super bright and additive (silica) varieties. It is characterized by excellent transparency, and because the gauge of the film is so thin that even the slightest raw material error can have a negative effect on the film quality. Its main applications are printing and lamination, metallization, embossing, holograms, thermal lamination.

Fiber-grade PET chips are polymers with an amorphous structure. When the PET resin is heated to a certain temperature, its amorphous structure can be transformed into a crystal structure with a certain degree of crystallinity. The density is 1.33-1.38g/cm3. This product has heat resistance, good light resistance and acid resistance. It is not easy to react when it is in contact with oxidizing agents and reducing agents. However, it has poor alkali resistance, low hygroscopicity and poor electrical conductivity. .

According to the content of matting agent tio2, the textile or fiber grade polyester chips can be divided into: super bright (high gloss), glossy, semi-dull, (full) matte PET chips. In addition, there are cationic polyester chips. Fiber-grade polyester chips are suitable for spinning all kinds of polyester staple fibers and filaments, making various clothing fabrics, cords and woven paper filter nets, etc.

Luster

Intrinsic Viscosity (dl/g)

Color L Value

Color B Value

Melting Point ℃

DEG %

Tio2 Content %

Super Bright(SB)

0.640 ± 0.020

53.0 ± 3.0

1.5 ± 1.5

251.0 ± 2.0

1.45 ± 0.2

——

Semi Dull (SD)

0.640 ± 0.010

75.0 ± 2.0

1.3 ± 1.0

257.0 ± 2.0

1.36 ± 0.10

0.33 ± 0.05

Cationic Dyeable(CD)

0.520 ± 0.020

64.0 ± 3.0

2.8 ± 2.0

242.0 ± 3.0

3.50 ± 0.50

0.10 ± 0.05

Flame Retardant(FR)

0.690 ± 0.020

62.5 ± 4

4.2 ± 3.0

238.5 ± 3.0

3.30 ± 0.70

0.60 ± 0.10

Water Bottle Grade
PET Plasitc Bottles
PET film product
Textile Grade

Packaging industry

  • Bottle-grade PET: PET polyester chips are widely used in the manufacture of various beverage bottles, especially the packaging of carbonated beverages. PET bottles are lightweight, transparent, shatterproof, and well sealed. They can effectively protect the contents and reduce the weight of the package, meeting the requirements of environmental protection and sustainable development.
  • Polyester film: Polyethylene terephthalate resin can also be made into polyester film for packaging materials, films, and tapes. Polyester film has excellent transparency, water resistance, oil resistance, and chemical stability, and can effectively protect the packaged items.

Fiber manufacturing. The PET polyester chips are the key raw materials for the manufacture of polyester staple fibers and polyester filaments. Polyester fibers have the advantages of high strength, good elasticity, and strong wear resistance, and are widely used in clothing, home textiles, industrial fabrics, and other fields.

Electronic and electrical appliances. PET chips are also widely used in the field of electronic and electrical appliances, such as capacitor films, motor insulation materials, etc. Its excellent electrical insulation and high temperature resistance make it an indispensable material in the electronic and electrical industry.

Construction and Automobile. This resin can be used in the construction field to make sound insulation materials, heat insulation materials, etc. In the automotive field, they can be used to make interior decoration parts, body shells and other parts to improve the comfort and safety of the car.

Medical and health care. The PET resin plastic can also be used in the manufacture of medical devices, such as infusion sets, syringes, etc. Its non-toxicity and strong corrosion resistance ensure the safety and durability of medical devices.

  • Stable viscosity. Its stable viscosity is conducive to its stability during processing and ensures product quality.
  • Moderate melting point. The melting point of PET chips is usually between 250 and 265°C, which allows it to maintain good performance in a variety of processing methods.
  • Good thermal stability. It can remain stable at high temperatures and is not easy to decompose, making it suitable for processing scenarios that require high-temperature treatment.
  • Chemical corrosion resistance. Polyethylene terephthalate resin has good resistance to a variety of chemicals, is not easily corroded, and can maintain its original physical and chemical properties.
  • Excellent electrical insulation. Under high temperature and high frequency, the electrical properties of PET resin are still good, which makes it widely used in the field of electronic appliances.
  • High strength and good elasticity. The finished product has high strength and excellent elasticity, which can meet various complex application scenarios.
  • Good heat and wear resistance. It can still maintain good performance under high temperature and wear environment, extending the service life of the product.
  • Soft gloss and good dyeability. PET finished products have a soft gloss and good dyeability, which can meet the needs of different colors and appearances.
  • Good drapability. PET textile products have excellent drape, making the products more beautiful and elegant.
  • Various molding processes. The molding process can be carried out by injection molding, extrusion, blow molding, coating, bonding, machining and other methods to meet the needs of different fields.
  • Green and environmentally friendly. PET polyester chips have good recyclability. The recycled PET polyester chips can be processed and reused to make new products. This recycling method helps to reduce resource waste and environmental pollution.

The production process of PET resin involves raw material preparation, polymerization, extrusion and molding. The main raw materials are terephthalic acid and ethylene glycol, which are formed into PET resin through transesterification and polymerization.

The polymerization reaction is carried out under high temperature and high pressure conditions, and it is necessary to add a catalyst and control the reaction parameters such as temperature, pressure and conversion rate. Finally, after extrusion molding and injection molding, blow molding and other molding processes, a series of PET products of various shapes are made.

Why Choose Fengbai

  • A leading polyethylene terephthalate (PET) supplier in China, fengbai has 15 years of export experience in plastic chemicals industry.
  • We can guarantee sufficient supply and fast delivery.
  • Free samples for testing and various packages to meet customers’ requirements.
  • Fengbai has a good cooperation with many cargo agents and shipping companies.
  • ISO quality, good services and competitive PET resin price.

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