How to deal with the corona phenomenon during the winding process of PVC printing film? Unclear Dongguan Shengyao wrapped PVC printed film passes between two high-voltage electrodes. High voltage ionizes the air between the electrodes, generating an electron flow that forms oxidized polarizing groups on the surface of the film, resulting in stronger polarity for printing ink adsorption on the film surface.

Corona treatment is simple easy to implement, with good treatment effects. Below, we will discuss the impact of controlled corona treatment on the properties of BOPP film.

Corona treatment is a very important step in the processing of wrapped PET film. We usually use corona discharge equipment, but we can also use flame treatment. Flame treatment is the use of a specific spray lamp to burn a certain proportion of gas air, forming an oxidation flame with a temperature of up to 2100~2800 ℃, in order to instantly change the surface properties of the film. In the actual processing, the temperature of the flame, the distance between the flame the film, the processing time are important factors that affect the processing effect. The PET film for the package is made of polypropylene material. The surface tension of this material is only 31 dynes. Usually, the surface tension of the membrane is required to be above 38 dynes.

Dongguan Shengyao Plastic Products Co., Ltd. - a manufacturer of transparent protective masks, was established in 2002 covers an area of over 10000 square meters. We are a professional manufacturer of PVC, PP, PET, PS films. The product is widely used in industries such as vacuum packaging, offset printing, window stickers, folding boxes, hardware, toys, magnetic cards, playing card production, billboards, helmets, electronic insulation, etc. It can provide customers with a 17% value-added tax invoice.