In the world of packaging, plastic bottles play a significant role, offering convenience and versatility for a wide range of products. From beverages to personal care items, these bottles are used to store and transport various goods. To enhance traceability, information accuracy, and compliance with industry standards, printing on plastic bottles has become essential. This comprehensive guide explores plastic bottle coding, focusing on the printing techniques and types of codes commonly used, such as 'best before' coding, date coding, batch numbers, LOT numbers, EAN codes, and GS1 data.
Plastic bottle coding involves the application of alphanumeric characters, symbols, or barcodes on the surface of the bottle. This process is crucial for product identification, traceability, and ensuring the safety and quality of the packaged contents. Coding on plastic bottles is typically done using specialised printing technologies, with PET (Polyethylene Terephthalate) being one of the most commonly used materials.
'Best before' coding is often applied using Continuous Inkjet (CIJ) printers. CIJ printers are ideal for high-speed production lines, ensuring quick and reliable printing of date information. In the food and beverage industry, where products have a limited shelf life, CIJ printers provide the necessary speed and precision for 'best before' coding.
Date coding can be achieved through various technologies, with Thermal Inkjet (TIJ) printers and Laser Marking Systems being popular choices. TIJ printers are versatile, offering high-resolution printing suitable for smaller production runs. Laser marking, on the other hand, is contactless and permanent, making it well-suited for applications in pharmaceuticals, where the durability of codes is crucial.
CIJ printers and Laser Marking Systems are commonly used for printing batch numbers and LOT numbers. CIJ printers provide high-speed, non-contact printing, making them efficient for large-scale production. Laser marking ensures durability and traceability, making it an excellent choice for industries with stringent quality control requirements.
Thermal Transfer Overprinting (TTO) and Laser Marking Systems are preferred for printing EAN codes. TTO printers offer flexibility in printing variable data, making them suitable for labelling and barcoding in the retail industry. Laser marking provides a permanent and high-contrast solution for EAN codes, ensuring accurate and reliable identification.
GS1 data, including GTINs, can be printed using TTO printers and Laser Marking Systems. TTO printers are effective for printing variable data, while laser marking ensures the durability and precision required for GS1 compliance. These technologies contribute to seamless communication within the supply chain.
CIJ printers are commonly used for high-speed 'best before' coding, ensuring accurate and fast printing on plastic bottles. Laser marking and TIJ printers are also employed for date coding, providing versatility and durability.
Laser marking systems are widely adopted for batch numbers, LOT numbers, and expiration date coding in the pharmaceutical industry. The non-contact nature of laser marking ensures product integrity.
TIJ printers are suitable for date coding on cosmetic and personal care products, offering high-resolution printing for variable data. Laser marking ensures the longevity of batch and LOT numbers.
TTO printers are commonly used for printing EAN codes on plastic bottles in the retail sector. Laser marking systems provide a durable solution for barcoding, contributing to efficient inventory management.
Plastic bottle coding is an integral part of modern packaging, and choosing the right technology is crucial for accuracy, efficiency, and compliance. From CIJ printers for high-speed production to laser marking systems for permanent and durable codes, each technology has its application in different industries. As plastic bottle coding technologies continue to evolve, manufacturers can look forward to increased efficiency, reduced waste, and enhanced traceability throughout the supply chain. The integration of advanced coding technologies ensures that plastic bottles not only meet regulatory requirements but also contribute to a safer and more transparent marketplace.
If you would like more help, guidance or information on suitable coding and labelling technology for plastic bottle coding and specifically coding on PET then Contact us today and we’d be more than happy to talk you through the best solution for your business.
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