UPASS focuses on the polymer film field, revealing the superior performance of longitudinally stretched MOPP film. Understand its high tensile strength, excellent electrical insulation, and dimensional stability, and why it has become a core material for capacitors. A professional manufacturer providing customized solutions.
Among many polymer film materials, MOPP (biaxially oriented polypropylene film) is highly favored due to its excellent comprehensive performance. However, did you know that through a specific longitudinal stretching process, MOPP film can be endowed with even more unique and superior properties? As a professional polymer film manufacturer, UPASS will take you on a deep dive into the secrets of longitudinally stretched MOPP film and its irreplaceable application value.
What is MOPP Film?
MOPP film stands for biaxially oriented polypropylene film. As the name suggests, the complete process involves stretching in both the longitudinal (MD) and transverse (TD) directions. Longitudinal stretched MOPP film specifically refers to films produced primarily or solely through a longitudinal stretching and orientation process.
This unique process aligns the polypropylene molecular chains highly in the machine direction, resulting in significantly enhanced physical properties in a single direction, distinguishing it from fully biaxially stretched BOPP films.
Key Performance Advantages of UPASS MOPP Film
Thanks to the unidirectional alignment of the molecular chains, longitudinally stretched MOPP films exhibit the following core advantages:
- Extremely high longitudinal tensile strength and modulus: This is its most significant characteristic. The film can withstand extremely high tensile forces along its length without easily breaking, possessing excellent mechanical durability.
- Superior electrical insulation properties: The pure polypropylene raw material combined with its oriented crystalline structure makes it a top-tier high-frequency insulating material with extremely low dielectric constant and loss tangent.
- Excellent dimensional stability: Under heated conditions, the film exhibits extremely low longitudinal shrinkage, ensuring dimensional accuracy and reliability of components during long-term use.
- Good flatness and uniformity: Precisely controlled stretching processes guarantee uniform film thickness and an extremely smooth surface.
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NO. Item Factory Requirement Detection Value Individual Determination 1 Appearance No bubbles, no stains, no damage, no impurities Qualified Qualified 2 Spec. Weight 70g±5g 71 Qualified Thickness 0.08±0.005mm 0.08 Qualified 3 Tensile Strength Mpa 150 303 Qualified 4 Elongation@Break % ≥20 31 Qualified 5 Release Force
(g/25mm)
5-8g 5.83 Qualified 15-25g 19.66 Qualified 6 Subsequent Adhesion
(%)
5-8g≥80 86 Qualified 15-25g≥90 92 Qualified
Wide-Ranging Applications of MOPP Film
The properties of longitudinally stretched MOPP film make it an irreplaceable "key material" in certain specific fields:
- Metallized film capacitors: This is its primary application area. The film's extremely high longitudinal strength ensures it is not easily broken during winding; its excellent electrical insulation is the cornerstone of capacitor performance; and its low thermal shrinkage rate guarantees the long-term stability of the capacitor in high-temperature operating environments.
- High-frequency circuit insulation: Utilizing its excellent high-frequency dielectric properties, it is often used as an insulating layer in high-frequency communication equipment, flexible circuit boards, etc.
- Specific packaging materials: It also has its uses for some special strip packaging requiring unidirectional high strength.
Why Choose UPASS as Your MOPP Film Supplier?
At UPASS, we understand that subtle differences in material properties have a decisive impact on the reliability of the entire electronic component. Our longitudinally stretched MOPP film uses carefully selected raw materials and is manufactured through a precisely controlled unidirectional stretching production line, ensuring that every roll of product possesses:
- Consistent mechanical properties
- Top-notch electrical properties
- Excellent thermal stability
We are not just a manufacturer, but also your technical partner. If you are looking for a high-performance, high-reliability film solution for your capacitors or other high-end applications, UPASS longitudinally stretched MOPP film is the ideal choice.
Contact us today for samples and technical information, and let our professional team provide you with customized product support!