BOPP (Biaxially Oriented Polypropylene) is a polypropylene film that is "Biaxially Oriented". This means the film is stretched in both the machine direction (MD) and across machine direction (AMD). The result is a material with superior strength at low gauges, flatness, clarity, and excellent printability. BOPP is used in an almost limitless array of flexible packaging applications, pressure sensitive tapes, labels, stationery, metallizing, consumer products as well as a wide variety of non-packaging uses.
★ Availability
We offers an extensive BOPP product line ranging in thicknesses from 18 to 60 microns and incorporates a broad range of physical properties.
★ The Weshare Products Advantage
Weshare's BOPP films are manufactured by proprietary coextrusion, which produces films with excellent gauge control, consistency and roll profile. Weshare's strategic partnership with the Formosa Plastics Group provides our customers with access to world-class technology and manufacturing capabilities, a complete range of BOPP grades, and the most competitive market pricing available.
Structure of Biaxially Oriented Polypropylene Film
Values
|
Property |
Test Method |
Unit |
Typical Value |
|
Thickness |
DIN 53370 |
micron |
50 |
|
Coefficient of Friction |
DIN 53375-A |
---- |
0.5 / 0.4 |
|
Haze |
ASTM D 1003 |
% |
1.65 |
|
Gloss (45°) |
ASTM D 2457 |
% |
90 |
|
Surface Tension |
ASTM D 2578 |
mN/m |
40 |
|
Heat Shrinkage (MD/TD) |
BMS TT 0.2 (150℃, 30 min) |
% |
3.0 / 0.2 |
|
Tensile Strength (MD/TD) |
ASTM D 882 |
MPa |
140 / 277 |
|
Elongation at break (MD/TD) |
ASTM D 882 |
% |
202 / 40 |
Why is BOPP a great material for stickers & labels?
Stickers and labels should be easy to print on, resistant to water and chemicals, and either clear or opaque, depending on your needs. BOPP label material ticks all of these boxes and more.
BOPP is perfect for printing
Printing with both water- and solvent-based inks is possible on BOPP labels. Manufacturers of BOPP film treat its surface using various methods - like corona treatment - to improve its adhesiveness and printability.
The corona treatment is a process of applying a thin layer of metal oxide to the surface of the BOPP label. The metal oxide layer is added by applying a liquid or gas on the surface of the label. The liquid or gas is then evaporated to form an oxide film on the surface of the label.
The corona treatment is not only applied on the surface of BOPP labels, but also to other labels as well, such as those used in food packaging and automotive parts packaging, due to the ease of printing and durability it provides.
Product application
Production process
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