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Technical parameters of BOPP tape

BOPP is the abbreviation of "Biaxially Oriented Polypropylene", which is biaxially oriented polypropylene film. Its production is to make the melt of high molecular polypropylene through the narrow head first to make a sheet or thick film, and then in a special drawing machine, at a certain temperature and set speed, at the same time or step by step Films made by stretching in two vertical directions (longitudinal and transverse), and after proper cooling or heat treatment or special processing (such as corona, coating, etc.).

The commonly used BOPP films include: ordinary biaxially oriented polypropylene film, heat-sealed biaxially oriented polypropylene film, cigarette packaging film, biaxially oriented polypropylene pearlescent film, biaxially oriented polypropylene metallized film, and matte film. The performance parameters and main uses of various films are as follows:

Ordinary BOPP film

Application: It is mainly used for printing, bag making, adhesive tape and compounding with other substrates.

Properties: * High transparency and gloss * Excellent ink and coating adhesion 涂层

* Excellent water vapor and grease barrier performance * Low static performance

Common thickness: 15, 19, 20, 25, 28, 35, 38, 40, 45 μm

Thickness tolerance: ± 3% (β-ray thickness measurement)

Sexual inability

Unit typical value

Tensile strength MD MPa ≥130 TD ≥220

Elongation at break MD% ≤180 TD ≤65

Heat shrinkage rate MD% ≤4 TD ≤2.5

Friction coefficient Static ≤0.7 Kinematics ≤0.7

Haze 12-30μm% ≤1.5 31-60μm ≤2.5

Gloss% ≥85

Wetting tension mN / m ≥38

Moisture permeability g / (m2 · 24h · 0.1mm) ≤2

BOPP heat seal film

Utilization: mainly used for printing, bag making, etc.

Properties: * High definition and gloss * Excellent heat seal strength 优异

* Excellent printing performance * Good antistatic performance and smooth performance

Common thickness: 20, 25, 30, 40, 45 μm

Thickness tolerance: ± 3% (β-ray thickness measurement)

Performance Unit Typical Value

Tensile strength MD MPa ≥120 TD ≥220

Elongation at break MD% ≤180 TD ≤80

Heat shrinkage rate MD% ≤5 TD ≤4

Friction coefficient static ≤0.8 dynamic ≤0.8

Haze% ≤4

Heat seal strength N / 15mm ≥2.0

Wetting tension mN / m ≥38

Moisture permeability g / (m2 · 24h · 0.1mm) ≤2.0

BOPP cigarette packaging film

Application: Used for high-speed cigarette packaging.

Properties: * High transparency and gloss * Excellent heat seal strength * High water vapor barrier performance

* Excellent stiffness * Excellent packaging flatness * Suitable for high-speed packaging

Common thickness: 21, 22, 23, 25 μm

Thickness tolerance: ± 3% (β-ray thickness measurement)

Performance Unit Typical Value

Tensile strength MD MPa ≥125 TD ≥220

Elongation at break MD% ≤220 TD ≤80

Thermal shrinkage rate MD% ≤4.5 TD ≤3.5

Friction coefficient dynamic ≤0.28

Young's modulus MD N / mm2 ≥2200

Haze% ≤4

Heat seal strength N / 15mm ≥2.5

Gloss% ≥80

Moisture permeability g / (m2 · 24h · 0.1mm) ≤2.0

BOPP pearlescent film

Utilization: Used for packaging of printed food and daily necessities.

Properties: * Excellent heat seal strength * Excellent UV blocking performance

* Pearl gloss high-end appearance * High barrier property

Common thickness: 20, 25, 30, 35, 40, 45 μm

Thickness tolerance: ± 3% (β-ray thickness measurement)

Performance Unit Typical Value

One layer and three layers

Tensile strength MD MPa ≥95 ≥70 TD ≥140 ≥120

 Elongation at break MD% ≤160 ≤150 TD ≤70 ≤60

Heat shrinkage rate MD% ≤5 ≤5 TD ≤4 ≤4

Friction coefficient Static ≤0.7 ≤0.7 Kinematics ≤0.7 ≤0.7

Transmittance 20-24μm% ≤65 ≤65 25-50μm ≤60 ≤60

Apparent density 20-24μm g / cm3 ≤0.85 ≤0.80 25-50μm ≤0.8 ≤0.75

Wetting tension mN / m ≥38 ≥38

Heat seal strength N / 15mm-≥1.5

Gloss% ≥60 ≥40

BOPP metallized film

Application: It is used as the base material for vacuum metal plating, radiation and anti-counterfeiting, and food packaging.

Properties: * Excellent heat seal strength * Excellent metal adhesion and gloss * Excellent inkless printing effect

Common thickness: 20, 25, 30, 40, 45 μm

Thickness tolerance: ± 3% (β-ray thickness measurement)

Natural energy unit Typical value

20-30μm 31-50μm

Tensile strength MD MPa ≥120 ≥130 TD ≥200 ≥220

 Elongation at break MD% ≤200 ≤220 TD ≤75 ≤80

Heat shrinkage rate MD% ≤4 ≤3 TD ≤2.5 ≤2

Friction coefficient static ≤0.7 ≤0.7 dynamic ≤0.7 ≤0.7

Haze% ≤2.5 ≤4.5

Gloss% ≥75 ≥75

Wetting tension mN / m ≥42 ≥42

Heat seal strength N / 15mm ≥2.0 ≥2.0

BOPP Matte Film

Application: Packaging boxes for soap, food, cigarettes, cosmetics, pharmaceutical products, etc.

Properties: * Low gloss and high haze * Excellent printability * Excellent heat sealability

Common thickness: 19, 20, 25 μm

Thickness tolerance: ± 3% (β-ray thickness measurement)

Natural energy unit Typical value

Tensile strength MD MPa ≥100 TD ≥200

 Elongation at break MD% ≤180 TD ≤65

Heat shrinkage rate MD% ≤4 TD ≤3

Friction coefficient static ≤0.7 dynamic ≤0.7

Gloss% ≤10 (matte surface)

Haze% ≥70

Wetting tension mN / m ≥38

BOPP anti-fog film

 Product use: used for packaging vegetables, fruits, sushi, flowers, etc.

 Product performance: excellent anti-fog and heat-sealing performance; high slip;

Good puncture resistance; high transparency; can keep fresh for a long time.

Specification model: Thickness: 20-60μm

Width: 200—2200mm

Coil diameter: 200—800mm

Natural energy unit Typical value

Thickness μm 20

Tensile strength MD MPa 122.7 TD 274.6

 Elongation at break MD% 253.5 TD 59.3

Heat shrinkage rate MD% 2.4 TD 0.8

Friction coefficient static 0.26 dynamic 0.25

Gloss% 90

Haze% 43/40

Wetting tension mN / m ≥38

Heat seal strength N / 15mm 2.7 / 2.8