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Glass bottles and containers are a popular packaging option because they help differentiate products, they can be reused or recycled, and they are perfect for food and beverage products that require a strong protection barrier. Glass is also widely used in construction, automotive and many other industries. Glass often needs to be marked with expiration dates, batch numbers, CE marking, 2D codes and barcodes, and company logos.
Marking and coding glass is challenging because glass is not absorbent, usually has a smooth surface and is frequently processed in a curved form. Leibinger printers address these challenges and provide accurate coding and marking at high speed and in wet or dusty production environments. Available inks include FDA-compliant inks, washable inks for reusable bottles, UV-resistant inks and pigmented inks that provide contrast against colored glass.
Marking and coding of glass bottles and glass containers
Leibinger continuous inkjet printers with Sealtronic speed-up start.
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Filling 100,000 bottles per hour is far from uncommon in the beverage industry, which is why coding in small letters needs to be carried out within the shortest possible time. In addition, industrial inkjet printers need to be able to cope with high-humidity environments and flexible enough to print on any part of the container, regardless of the material used.
Coding in the chemical industry is important for traceability but it can be challenging when the production environment is hot, dusty or wet. Under such conditions, you can only achieve reliable, high-quality coding with specially designed systems. It can also be difficult to ensure ink adherence on slick plasticizers and to guarantee code resilience in the event of chemical spillage.
High dust levels and extremely high line speeds make tea and coffee packaging systems a demanding coding and marking environment. In order to guarantee the quality and consistency of end products, cleanliness is also a key factor.
Confectionery products and snacks need to be coded at high speed, using fast-drying inks. New formulations, flavors, sales promotions and packaging sizes also increase the risk of costly coding errors and require coding and marking solutions that are reliable, fast and flexible.
Designed for the convenience of the customers, these are products that come in an ever-changing range of packaging formats, such as shrink wrap, foil and cardboard. Also, since the information to be coded onto the packaging changes frequently, coding solutions must be highly flexible. The coder must also be able to withstand the extreme temperatures, high humidity and dust levels that are a feature of the industry, and should use inks that are suited to the surface of the packaging.
Marking cosmetics and personal care products takes place according to an international agreement – referred to as the INCI (International Nomenclature of Cosmetic Ingredients) – and applies to both ingredients and fragrances. Additionally, throughout the EU, such articles must have a use-by date if their shelf life is less than 30 months. Coding is also used as an anti-counterfeit measure and to aid traceability.
The dairy business is shaped by short product shelf lives and stringent hygiene requirements. Dairy producers also face regularly changing packaging designs, the ever-increasing variety of types and flavors, and frequent production changes. Coding and marking therefore requires equipment that can print expiration dates and other such information reliably and efficiently on a variety of surfaces.
Packaged food products come in all shapes and sizes, which requires great flexibility from your coding and marking solution. Foods are packaged in a variety of formats, using different materials that can be challenging to print on. The food industry also demands high standards of hygiene compliance, requiring actions such as the regular spray-cleaning of the production environment.
Laws around the world require pharmaceutical manufacturers to print codes on packaging, boxes and blister packs to enable traceability and protect against counterfeiting. High legibility – even in small fonts – is essential and producers need to code on a variety of packaging formats.