Coding and Marking Systems in Packaging: A Complete Guide

Coding and marking systems have emerged as powerful forces driving efficiency, security, and compliance in various manufacturing industries. 

These intricate processes play a vital role in ensuring that products reach consumers with the correct information, at the right time, and in the proper condition. 

Coding and marking are significant to modern supply chains, from imprinting essential details like manufacturing dates and batch numbers to aiding anti-counterfeiting measures. 

As regulatory mandates tighten and consumer demands evolve, the significance of coding and marking continues to grow, shaping the way industries operate and innovate.

Get to Know First About Coding and Marking

Coding refers to the process of creating and applying codes that contain specific information about the product. These codes can be alphanumeric, barcodes, QR, or other machine-readable symbols.

Marking is the physical process of applying the code onto the product or packaging. It can be done through various technologies such as inkjet printing, laser marking, thermal transfer, or labeling.

These codes serve various purposes, from tracking and tracing to compliance and branding. Moreover, codes can be used to verify the authenticity of products, protecting against counterfeiting and fraud.

Why Coding and Marking Are So Important for Your Business

By understanding and implementing coding and marking systems, businesses can reap numerous benefits, such as:

1. Ensuring Traceability and Compliance

Proper labeling with identifying information ensures traceability throughout the supply chain. This traceability is vital for tracking products from manufacturing to distribution, allowing quick response to any issues or recalls.

Compliance with industry regulations is also maintained through accurate coding and marking, helping manufacturers avoid costly penalties and legal challenges.

2. Improving Production Efficiency and Reducing Waste

Automation in coding and marking minimizes human error, leading to a more efficient production process. Waste is minimized by reducing mix-ups in production through correct labeling, leading to cost savings and a more sustainable operation.

3. Enhancing Product Security and Authenticity

High-quality codes and symbols ensure that products are genuine and untampered, protecting consumers and brands. This security is vital in many industries where counterfeit products pose significant safety risks.

4. Enhancing Supply Chain Visibility

Proper labeling improves supply chain visibility, making tracking products and identifying potential issues or bottlenecks easier. This visibility allows for real-time adjustments and optimization, enhancing overall supply chain efficiency.

Types of Coding and Marking Systems

The following coding and marking systems cater to diverse needs, depending on efficiency, surface material, and quality requirements.

1. Continuous Inkjet Printer (CIJ)

Continuous Inkjet Printers expel ink droplets through a printhead nozzle, creating text or codes. These printers can discharge up to 120,000 tiny ink droplets without contacting the material during printing.

This type of coding and marking system is versatile and can be used on various surfaces, making it suitable for multiple applications.

2. Laser Marking

Laser Marking is a more permanent solution that alters the material’s surface. For example, when applied to a painted card, the topcoat of the paint is removed, leaving it bare. 

Laser Marking deflects a concentrated beam of light through a system of lenses to form characters. This method offers high precision and is suitable for applications requiring permanent marking.

3. Piezo Inkjet Printers

Like CIJ, Piezo Inkjet Printers expel ink droplets onto a moving surface. However, these printers use oil-based inks designed to print codes in high resolution and offer better versatility. This type of system is suitable for applications requiring detailed and high-quality printing.

4. Thermal Inkjet Printers (TIJ)

Thermal Inkjet Technology is a more basic form of coding and marking. It uses standard ink cartridge systems and doesn’t require any specialized inks. These systems create a clean and easy printing process, making them suitable for applications requiring simplicity and efficiency.

5. Thermal Transfer Overprinters (TTO)

Thermal Transfer Overprinting is a technology that creates text by pushing a ribbon onto contact from a printhead. This process produces high-resolution printing and is applied to fast-moving product surfaces.

Different Types of Substrates for Packaging

The substrate, or the material, plays a crucial role in protecting the product, enhancing its appearance, and ensuring compatibility with various printing and coding methods.

1. Paper

Paper is a flexible material with multiple features that make it apt for packing. Qualities such as the appearance of its surface, hue, transparency, and weight define its practical use.

For example, the felt side of the paper’s surface is more prone to absorbing ink. The paper’s resistance to tearing and pulling is crucial in establishing its sturdiness and visual appeal.

2. Plastic Film

Plastic films come in several forms, such as PE (Polyethylene), PP (Polypropylene), PET (Polyethylene Terephthalate), Nylon, etc., with each possessing unique features tailored for distinct uses.

For instance, PE, often found in containers, plastic bags, and bottles, offers substantial chemical resistance but generally lacks firmness and strength. Conversely, PP, utilized in food containers and bottles, is favored for its heat resistance and greater clarity than PE.

3. Metallic Film

Aluminum foil is a prevalent metal film in packaging, recognized for its superior ability to block light, UV rays, water, steam, and air. This material makes it fit for pharmaceuticals, dairy, and food packaging sectors.

Choose The Right Coding and Marking Tools for Your Packaging

Selecting the correct coding and marking tools is a critical decision that can significantly impact your product’s quality. Here are the key considerations and options in choosing the proper tools:

1. Product Material and Shape

The type of material and the product’s shape will influence the coding and marking technology choice. For example, a curved surface may require a different approach than a flat one.

2. Code Information

The information that needs to be coded, such as text, graphics, or barcodes, will determine the suitable coding technology.

3. Production Speed

The speed of the production line must match the coding and marking system to ensure seamless integration.

4. Regulatory Compliance

Certain industries have specific regulations that dictate the type of coding and marking used.

5. Budget Constraints

The cost of the coding and marking system, including initial investment and ongoing maintenance, must align with the budget.

With the proper coding and marking tools, businesses can leverage these systems to enhance their productivity across supply chains.

Discover the suitable solution for your coding and marking in packaging needs with Markcom Global. Our products are tailored to meet your business specifications and ensure quality, efficiency, and reliability. 

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