The food industry requires certain information on packaging to ensure consumer safety and legal compliance. Details such as expiration date, batch number, barcode and ingredient information are applied to packaging using different coding techniques. In this article, the coding techniques commonly used in food packaging and their advantages will be discussed.
1. Inkjet (Inkjet) Coding
Inkjet coding is a non-contact printing technology. In this method, dynamic information is written on the packaging using fast-drying ink.
Advantages:
- High speed working capacity
- Ability to print on different surfaces
- Ability to print variable data (date, batch number, barcode, etc.)
Disadvantages:
- Operational cost due to ink consumption
- Risk of erasure or etching in certain environments
2. Laser Coding
Laser coding is a technology that creates permanent marks on packaging. It uses no ink and requires no physical contact.
Advantages:
- Permanent and durable marking
- No need for ink and consumables
- Low maintenance costs
Disadvantages:
- High initial investment cost
- Readability issues on metallized and glossy surfaces
3. Thermal Transfer Printing (TTO)
Thermal transfer printing is a system that performs code writing with thermal printing technology on rolled film.
Advantages:
- High print quality
- Flexible design options
- Compatible printing on different materials
Disadvantages:
- Ribbon consumable use
- The necessity to replace the print head at certain intervals
4. Direct Thermal Printing
The direct thermal printing method prints by applying heat to specially coated paper and plastic surfaces.
Advantages:
- No need for ink and ribbon
- Low operating costs
- High print speed
Disadvantages:
- Fading and loss of readability over time
- Sensitivity to heat and light
5. Labeling and RFID Technology
RFID (Radio Frequency Identification) and barcode labeling are widely used in logistics and tracking systems.
Advantages:
- Large data storage capacity
- Remote reading and monitoring
- Fast and accurate data collection
Disadvantages:
- High cost
- Signal loss in metal and liquid environments
Coding techniques used in food packaging are critical for product tracking, consumer information and legal compliance. The coding technology to be selected should be determined according to the needs of the business, cost expectations and packaging material. When the right technique is used, both efficiency increases and consumer satisfaction is ensured.
