BOPET polyester film high transparency and high temperature resistant insulation packaging film

Description :

  BOPET film, also known as biaxially oriented polyester film, is a high-performance plastic packaging material. It is made by extruding thick sheets and stretching them in both longitudinal and transverse directions, with extremely high mechanical strength and dimensional stability. This material mainly solves the problems of low strength, poor heat resistance, and easy deformation of ordinary films, and is widely used in working conditions that require high barrier, high transparency, and electrical insulation performance. As a modern industrial basic material, BOPET film plays a key role in packaging, electronics, optics and other fields, effectively protecting the contents and improving product quality.

  The typical thickness range of BOPET film is usually between 12 μ m and 350 μ m, with common specifications including 12 μ m, 25 μ m, 50 μ m, 100 μ m, etc. Its density is about 1.40g/cm ³, the tensile strength is greater than 200MPa, and the elongation at break is around 100% -150%. This material complies with national standards such as GB/T 16958-2008 and has excellent chemical corrosion resistance, which can resist most acid-base corrosion. The working temperature range is wide, and it can withstand high temperatures above 150 ℃ in the short term. It is also not easily brittle at low temperatures. The surface glossiness is high, the light transmittance can reach over 90%, and it has good printing adaptability and aluminum plating performance.

  When selecting, it is necessary to choose BOPET films with different thicknesses and surface treatment methods according to specific application scenarios. Ordinary packaging can use general grade products that have not undergone corona treatment, while printing composite or vacuum aluminum plating must use models with corona treated surface dynes greater than 38 dyne/cm. For electrical insulation applications, attention should be paid to its breakdown voltage and dielectric constant indicators. Compared with BOPP film, BOPET has higher heat resistance and mechanical strength, but the cost is slightly higher; Compared with PEN film, BOPET has better cost-effectiveness and is suitable for most conventional high-temperature environments, but not for extreme ultra-high temperatures or special chemical corrosion environments.

  BOPET film should be moisture-proof during storage and use. Although its water absorption rate is low, long-term exposure to humid environments may affect the composite strength. During installation or processing, it is necessary to maintain uniform tension to avoid wrinkling or breaking of the film due to uneven stress. In daily maintenance, it is necessary to check whether the end face of the film roll is flat, whether there are scratches or foreign objects attached. Common faults such as poor printing adhesion are usually caused by ineffective corona treatment, which can be resolved by re corona treatment or changing batches. Reasonably control the processing temperature to avoid exceeding its melting point and causing thermal shrinkage deformation, ensuring the dimensional accuracy and appearance quality of the final product.

AfterSalesService :