Meaning
The intensity of light falling on products displayed in retail environments measures the potential exposure of packaging to photochemical degradation. In retail operations, the retail display lux level determines how rapidly inks and paperboards might fade under typical store lighting. This measurement is monitored using light meters at the point of sale and is restricted to the active display areas of the store.
Setting a baseline value for this parameter allows both brand owners and converters to design realistic testing protocols, ensuring that the finished print remains stable under the actual environmental conditions of the store.
Lighting Standard
Standard supermarkets maintain bright illumination to attract customers and ensure high product visibility. When managing retail display lux, retailers must balance consumer appeal with the risk of damaging sensitive products or their packaging. Premium display cabinets often use high-intensity LEDs that generate elevated lux levels compared to ambient store lighting.
Degradation Risk
Extended exposure to high light intensity breaks down the chemical bonds of standard packaging inks over time. If the retail display lux exceeds the tolerance of the printed carton, the brand will suffer from visual fading before the stock is sold. This issue requires brand owners to select inks with superior lightfastness for high-exposure shelf positions.
Contractual Limit
In supply contracts, suppliers often define the maximum light exposure their packaging can withstand without fading. If the retailer exceeds the specified retail display lux limits, they forfeit their right to claim financial compensation for faded stock. This protective clause ensures that the brand owner is not penalized for extreme in-store lighting conditions.
