Everyone still needs to have a good understanding of the basic knowledge of PET release film, so let's take a look!

Polyester heat shrink film is a new type of heat shrink packaging material. Due to its easy recycling, non-toxic, odorless, good mechanical properties, and environmental protection, polyester (PET) has become an ideal substitute for polyvinyl chloride (PVC) heat shrink films in developed countries.

However, ordinary polyester is a crystalline polymer, and ordinary PET film can only achieve a thermal shrinkage rate of less than 30% after special processing. To obtain a higher thermal shrinkage polyester film, modification is also necessary. That is to say, in order to prepare high thermal shrinkage polyester films, it is necessary to copolymerize and modify ordinary polyester, i.e. polyethylene terephthalate. The maximum thermal shrinkage of PET film modified by copolymerization can reach over 70%.

PET release film

The characteristics of heat shrinkable polyester film: it is stable at room temperature, shrinks when heated, and experiences over 70% heat shrinkage in one direction.

The advantages of heat shrink polyester film packaging are:

Transparent fit, reflecting the image of the product. Tight packaging with good anti scattering properties. Water proof, moisture proof, and mold proof. Non restorative, with certain anti-counterfeiting functions. Heat-shrinkable polyester film is commonly used in the convenience food and beverage markets, electronic appliances, and metal products, with shrinkage labels being its main application area. Because with the rapid development of PET beverage bottles, beverage bottles such as cola, Sprite, and various fruit juices require PET heat shrink film to be paired with them for heat sealing labels. They all belong to the polyester category and are environmentally friendly materials that are easy to recycle and reuse.

   For more information, please visit the our website. If you have any questions, please call our service hotline for consultation. Reechas is a high-tech enterprise founded in 2006 and headquartered in Shenzhen, China. We focus on the development, production, and sales of integrated laminating products, including release films, conformal films, and press pads. These products are widely usedin PCB, FPC,  rigid-flex PCB, 5G PCB, IC substrate, CCL, smart card, copper coin & heat-sink and other industries.