Flexo printing corona treaters are essential tools in the printing and packaging industry, enhancing the surface properties of various materials to ensure optimal ink adhesion and print quality. As a leading supplier of flexo printing corona treaters, we understand the diverse needs of our customers and the wide range of materials that can benefit from corona treatment. In this blog post, we will explore the types of materials that a flexo printing corona treater can effectively treat, highlighting the advantages and applications of each.
Plastics
Plastics are one of the most common materials treated with flexo printing corona treaters. Many plastics, such as polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC), have low surface energy, which makes it difficult for inks and adhesives to adhere properly. Corona treatment increases the surface energy of plastics by creating polar functional groups on the surface, improving wettability and adhesion.
- Polyethylene (PE): PE is a widely used plastic in packaging applications due to its low cost, flexibility, and chemical resistance. However, its low surface energy can result in poor ink adhesion. Corona treatment of PE films and sheets improves printability, allowing for high-quality graphics and text to be printed on the surface. This is particularly important for applications such as food packaging, where clear and durable printing is required.
- Polypropylene (PP): PP is another commonly used plastic in the packaging industry, known for its high strength, stiffness, and heat resistance. Similar to PE, PP has low surface energy and requires corona treatment to enhance ink adhesion. Corona-treated PP is used in a variety of applications, including labels, flexible packaging, and automotive interiors.
- Polyvinyl Chloride (PVC): PVC is a versatile plastic used in a wide range of applications, from construction materials to consumer products. Corona treatment of PVC improves its printability and adhesion properties, making it suitable for applications such as signage, banners, and decorative films.
Films
In addition to plastics, flexo printing corona treaters can also treat various types of films, including polyester, nylon, and cellophane. These films are commonly used in packaging, labeling, and graphic arts applications, where high-quality printing and adhesion are essential.
- Polyester Films: Polyester films, such as polyethylene terephthalate (PET), are known for their high strength, clarity, and chemical resistance. However, like other plastics, they have low surface energy and require corona treatment to improve ink adhesion. Corona-treated polyester films are used in applications such as flexible packaging, labels, and photographic films.
- Nylon Films: Nylon films are strong, flexible, and have excellent barrier properties, making them suitable for food packaging and other applications where product protection is important. Corona treatment of nylon films enhances their printability and adhesion, allowing for high-quality graphics and text to be printed on the surface.
- Cellophane Films: Cellophane is a biodegradable and renewable film made from cellulose. It is commonly used in food packaging, confectionery, and tobacco packaging. Corona treatment of cellophane films improves their printability and adhesion, making it possible to print high-quality graphics and text on the surface.
Papers and Cardboards
Papers and cardboards are also commonly treated with flexo printing corona treaters to improve their printability and adhesion properties. Corona treatment of papers and cardboards increases the surface energy, allowing inks and adhesives to spread more evenly and adhere better to the surface.
- Coated Papers: Coated papers are papers that have been treated with a thin layer of coating to improve their smoothness, gloss, and printability. Corona treatment of coated papers further enhances their printability, allowing for high-quality graphics and text to be printed on the surface. Coated papers are commonly used in applications such as magazines, brochures, and packaging.
- Uncoated Papers: Uncoated papers, such as newsprint and kraft paper, have a rough surface and low surface energy. Corona treatment of uncoated papers improves their printability and adhesion, making them suitable for applications such as newspapers, flyers, and corrugated boxes.
- Cardboards: Cardboards are thick, rigid papers used in packaging applications. Corona treatment of cardboards improves their printability and adhesion, allowing for high-quality graphics and text to be printed on the surface. Cardboards are commonly used in applications such as shipping boxes, product packaging, and displays.
Metals
Flexo printing corona treaters can also treat metals, such as aluminum and steel, to improve their surface properties and adhesion. Metal substrates are commonly used in the packaging, automotive, and electronics industries, where high-quality printing and coating are required.
- Aluminum Foil: Aluminum foil is a widely used material in the packaging industry, known for its excellent barrier properties and heat resistance. However, its smooth and non-porous surface can make it difficult for inks and adhesives to adhere. Corona treatment of aluminum foil CoronaTreatment On Aluminum Foil increases its surface energy, improving wettability and adhesion. This allows for high-quality printing and coating on the surface of the foil, making it suitable for applications such as food packaging, pharmaceutical packaging, and decorative foils.
- Steel Sheets: Steel sheets are used in a variety of applications, including automotive parts, appliances, and construction materials. Corona treatment of steel sheets improves their surface properties, such as adhesion and corrosion resistance. This is particularly important for applications where coatings and paints need to adhere firmly to the surface of the steel.
Other Materials
In addition to plastics, films, papers, cardboards, and metals, flexo printing corona treaters can also treat other materials, such as textiles, glass, and ceramics. These materials are commonly used in a variety of applications, where high-quality printing and coating are required.
- Textiles: Textiles, such as cotton, polyester, and nylon, can be treated with flexo printing corona treaters to improve their printability and adhesion properties. Corona treatment of textiles increases the surface energy, allowing for better ink penetration and adhesion. This is particularly important for applications such as apparel, home furnishings, and technical textiles.
- Glass: Glass is a widely used material in the packaging, automotive, and construction industries. Corona treatment of glass improves its surface properties, such as wettability and adhesion. This allows for better printing and coating on the surface of the glass, making it suitable for applications such as beverage bottles, automotive windows, and architectural glass.
- Ceramics: Ceramics are used in a variety of applications, including tiles, tableware, and electronic components. Corona treatment of ceramics improves their surface properties, such as adhesion and printability. This allows for high-quality graphics and text to be printed on the surface of the ceramics, making them suitable for applications such as decorative tiles and promotional items.
Laboratory and Laminated Printing Applications
For specific applications, we also offer specialized corona treaters such as the Laboratory Corona Treater which is ideal for research and development purposes. It allows for precise control of the corona treatment process, enabling researchers to study the effects of corona treatment on different materials and optimize the treatment parameters.
In the context of laminated printing, our Corona Machine for Laminated Printing plays a crucial role. Laminated materials often require enhanced adhesion between different layers. Corona treatment of the surfaces before lamination improves the bonding strength, resulting in more durable and high-quality laminated products. This is especially important in applications where the laminated structure needs to withstand various environmental conditions and mechanical stresses.
Conclusion
Flexo printing corona treaters are versatile tools that can treat a wide range of materials, including plastics, films, papers, cardboards, metals, textiles, glass, and ceramics. By increasing the surface energy of these materials, corona treatment improves their printability, adhesion, and overall quality. As a leading supplier of flexo printing corona treaters, we offer a range of solutions to meet the diverse needs of our customers. Whether you are in the packaging, labeling, graphic arts, or other industries, our corona treaters can help you achieve high-quality printing and adhesion on your materials.
If you are interested in learning more about our flexo printing corona treaters or would like to discuss your specific requirements, please contact us. Our team of experts is ready to assist you in finding the right solution for your application.
References
- ASTM D2578 - Standard Test Method for Wetting Tension of Polyethylene and Polypropylene Films
- ISO 8296 - Plastics - Film and sheeting - Determination of wetting tension
- "Corona Treatment Technology" by Richard P. Kuhn, Society of Plastics Engineers