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Film surface treatment methods include corona treatment, plasma treatment, chemical treatment, photochemical treatment, flame treatment, and coating treatment. So which film surface treatment method is used by Nanjing Suminoe Precision Industry? Nanjing Suminoe Precision uses the corona treatment process, which is more mature and is currently the most common method for plastic film surface treatment. Let's learn more about Nanjing Suminoe Precision's corona treatment process.
The role of corona treatment:Through the electrode discharge between the electrode and the corona treatment stick, the air is ionised to form ozone and nitrogen oxide. At the same time, high-energy electrons and ions attack the surface of the film, causing its chain molecules to break, generating free radicals, and with the air corona products such as oxidation and crosslinking reactions, generating hydroxyl, carbonyl and other polar groups, improving the surface tension and polarity of the film.
High-energy electrons and ions are injected into the film, creating tiny concave dense pores on the surface of the plastic film, roughening the film surface and increasing the surface activity. The wetting tension of the film surface is related to the intensity of the corona treatment. The intensity of corona treatment is related to the electrode voltage, the gap between the electrode and the corona roller. The higher the electrode voltage, the smaller the distance between the electrode and the corona roller, the stronger the effect of corona treatment; the effect of film treatment, but also with the film and the corona roller whether the air is sandwiched between the film and the corona roller, if the film and the corona roller sandwiched between the air, it will lead to the back of the film is also processed, which may lead to the back of the film's heat sealing performance deterioration, in addition, but also with the surface of the corona rollers and electrodes related to the cleanliness of the corona rollers and electrode surfaces, corona rollers and electrode surfaces In addition, it is also related to the cleanliness of the corona rollers and electrode surfaces, which, if dirty, will reduce the effectiveness of the corona treatment.
The addition of additives may also have a certain effect on the polarity of the film surface and surface tension, BOPET film commonly used additives for anti-adhesion agents, usually silica. Silicon dioxide in the silicon oxygen bond has a strong polarity, and silicon dioxide particles are often adsorbed on the surface of a certain amount of water and hydroxyl, therefore, the silicon dioxide particles have a high surface energy, so that the exposed silicon dioxide particles on the surface of the film to help increase the film surface polarity and surface tension, conducive to aluminium plating. Sometimes, in order to improve the compatibility of silica particles with PET and promote their dispersion in the PET polymerisation process, a surface treatment agent (dispersant, coupling agent, etc.) is used to treat the surface of the silica particles in order to reduce their surface tension and polarity. In this case, silica particles distributed on the surface of the film affect the polarity and surface tension of the film surface, and excessive surface treatment agents may migrate to the surface of the film, resulting in deterioration of its aluminising performance.
Nanjing Suminoe Precision Machinery Co., Ltd. is a collection of scientific research, production, sales in one of the high-tech enterprises, has always adhered to the integrity, equality, the customer's interests first business philosophy, in order to better improve the quality of the equipment, into a more professional and standardised production track. We set up a plastic sheet plate, casting, bi-directional stretching, non-woven nonwoven meltblown cloth, film composite, renewable granulation environmental protection recycling system and coating machine manufacturing system and other seven categories of equipment, independent research and development technology centre and production departments. We provide professional full set of technical solutions to meet the special needs of each customer. Among them, regarding the extrusion laminating manufacturing system, i.e. film laminator, the following production lines are available for customisation: PE double/triple co-extruded laminating production line, LDPE (3-in-1) laminating production line, PP,PE,PLA double-side laminating production line, aluminium foil high-speed laminating production line, PP spunbonded laminating production line, textile interlining fabrics laminating production line, hot-melt adhesive laminating production line, multi-layer extrusion laminating production line, graphene laminating production line and other laminating equipment. Graphene coated laminating line, Carbon fibre laminating line.
The role of corona treatment:Through the electrode discharge between the electrode and the corona treatment stick, the air is ionised to form ozone and nitrogen oxide. At the same time, high-energy electrons and ions attack the surface of the film, causing its chain molecules to break, generating free radicals, and with the air corona products such as oxidation and crosslinking reactions, generating hydroxyl, carbonyl and other polar groups, improving the surface tension and polarity of the film.
High-energy electrons and ions are injected into the film, creating tiny concave dense pores on the surface of the plastic film, roughening the film surface and increasing the surface activity. The wetting tension of the film surface is related to the intensity of the corona treatment. The intensity of corona treatment is related to the electrode voltage, the gap between the electrode and the corona roller. The higher the electrode voltage, the smaller the distance between the electrode and the corona roller, the stronger the effect of corona treatment; the effect of film treatment, but also with the film and the corona roller whether the air is sandwiched between the film and the corona roller, if the film and the corona roller sandwiched between the air, it will lead to the back of the film is also processed, which may lead to the back of the film's heat sealing performance deterioration, in addition, but also with the surface of the corona rollers and electrodes related to the cleanliness of the corona rollers and electrode surfaces, corona rollers and electrode surfaces In addition, it is also related to the cleanliness of the corona rollers and electrode surfaces, which, if dirty, will reduce the effectiveness of the corona treatment.
The addition of additives may also have a certain effect on the polarity of the film surface and surface tension, BOPET film commonly used additives for anti-adhesion agents, usually silica. Silicon dioxide in the silicon oxygen bond has a strong polarity, and silicon dioxide particles are often adsorbed on the surface of a certain amount of water and hydroxyl, therefore, the silicon dioxide particles have a high surface energy, so that the exposed silicon dioxide particles on the surface of the film to help increase the film surface polarity and surface tension, conducive to aluminium plating. Sometimes, in order to improve the compatibility of silica particles with PET and promote their dispersion in the PET polymerisation process, a surface treatment agent (dispersant, coupling agent, etc.) is used to treat the surface of the silica particles in order to reduce their surface tension and polarity. In this case, silica particles distributed on the surface of the film affect the polarity and surface tension of the film surface, and excessive surface treatment agents may migrate to the surface of the film, resulting in deterioration of its aluminising performance.
Nanjing Suminoe Precision Machinery Co., Ltd. is a collection of scientific research, production, sales in one of the high-tech enterprises, has always adhered to the integrity, equality, the customer's interests first business philosophy, in order to better improve the quality of the equipment, into a more professional and standardised production track. We set up a plastic sheet plate, casting, bi-directional stretching, non-woven nonwoven meltblown cloth, film composite, renewable granulation environmental protection recycling system and coating machine manufacturing system and other seven categories of equipment, independent research and development technology centre and production departments. We provide professional full set of technical solutions to meet the special needs of each customer. Among them, regarding the extrusion laminating manufacturing system, i.e. film laminator, the following production lines are available for customisation: PE double/triple co-extruded laminating production line, LDPE (3-in-1) laminating production line, PP,PE,PLA double-side laminating production line, aluminium foil high-speed laminating production line, PP spunbonded laminating production line, textile interlining fabrics laminating production line, hot-melt adhesive laminating production line, multi-layer extrusion laminating production line, graphene laminating production line and other laminating equipment. Graphene coated laminating line, Carbon fibre laminating line.