In theory, if the surface tension of the object is less than 33 dynes / cm, ordinary ink or adhesive cannot be attached firmly, therefore, it is necessary to surface treatment; polyester (PET, PBT, PEN, PETG) It is a polar polymer with a high surface free energy, and the surface wet tension is above 40 dacco / cm or more.

If you want to know more about the related content of the PE winding film, please call the PE winding film manufacturer, we will serve you wholeheartedly. . The above content is the factor affecting the tightness of the winding film, hoping to help everyone.

The tightness of the surface of the wrapping film depends on the molecular structure of the winding film material itself, in fact, there are many factors that affect the tightness of the winding film, and then introduce it to everyone by the PE wrapping film manufacturer.

Non-polar polymer, the surface of the winding film is small, the surface wet tension is low, generally 30 dynes / cm. The main measure of preventing the wound film is to regulate the pressure of the rubber press roller before the corona treatment roller, and the pressure on both ends of the compression roller must be consistent and the pressure magnitude should be appropriate.

PE winding film manufacturer tells you factors affecting the pectoral degree of wound film However, for high speed color printing or increasing the bonding force between the surface of the vacuum aluminum layer and China Paper Plastic Packaging Tape Manufacturer the BOPET, the BOPET winding film is also required to further improve its surface wet tension; plating when aluminized Aluminum layer transfer, the metaplan transfer occurs during the glue