Easy Steps for Performing Color Matching Testing In Paper and Packaging Industry

We all know that colour matching is an important aspect of quality control when it comes to the paper and packaging industry. Thus, it is important for the manufacturers to conduct a colour-matching test on the materials so that accurate products will be delivered to the customers. Thus, we at Presto being Asia’s No.1 manufacturer of lab testing instruments have designed high-quality testing equipment known as Color Matching Cabinet Spectrum Asia. This is one of the high-quality testing equipment that has been designed to test the accuracy of colours present in the products and ensure that quality materials will be delivered to the customers.  

Importance of Color Matching Testing in the Paper & Packaging Industry

Perform accurate colour assessment in paper and packaging products with Presto colour-matching cabinet

Features of Presto colour-matching cabinet

• Standardized and controlled lighting conditions.
• Wide Viewing Area
• High-quality light sources are used
• Standards: ISO 3664, BS 950, ASTM D 1729, DIN 6173

Technical specifications of Presto colour-matching cabinet

• This testing equipment is fitted with FIVE Light Sources as per CIE International Standards:
• D – 65 – Artificial daylight – 2 Nos.
• TFL Light-Tungsten Filament – 4 Nos.
• TL – 84 Light-Point of Sale – 1No.
• UVB Light-Ultra Violet – 1 No.
• CWF Light-Cool white fluorescent – 1 No.
• Hour Meter-Imported from Germany to record the cumulative usage.
• The angle of the viewing booth – is 45 degree
• Viewing Booth Material – Wood or Steel
• Time Totaliser – up to 99999.9 hours

Easy to follow steps for performing colour matching test with Presto colour matching cabinet

• Take out the machine from the wooden box.  Place it in a dark room on a flat surface or levelled surface where there is no interference of ambient light on the test area to get appropriate results.
• Take a sample and cut a specific area from it that the user needs to test.
• Take a Master and a sample and place it side by side on the 45-degree angle fixture.
• Now fix the sample on the steel angle fixture using magnets (provided with the instrument). 
• Place the material at the bottom of a viewing booth at the distance from the illuminator required to obtain the specific luminance. The specimen should be viewed at a distance of 450 to 600mm (18” to 24”).
• When viewing a glossy surface, it is necessary to avoid seeing the light source secularly reflected by the surface. This may be accomplished by illuminating along the normal to the surface and viewing at 45° C to the normal or illuminating at 45°.
• The INCA Light consists of four incandescent bulbs. Assessment should be done under filament lighting to ensure that the two samples are still matching. It is this light under which Metamerism is detected (Metamerism–when samples appear to be the same under one light source and become altogether different in another light). If the match is satisfactory, proceed on to the next light.
• The U.V. Light switch should now be put ON to enable tests to be carried out under ultraviolet light. With the widespread use of fluorescent dyes and brighteners, it is necessary to ascertain if both samples react equally to ultraviolet radiation. It is often found particularly in the case of white samples the U.V.B. Light clearly indicates the presence of fluorescent dyes and bleaches.
• A final test under TL-84 Triphosphor Fluorescent lamp is carried out to ascertain if the colours are acceptable at the ‘Point of Sale’.
• If the matching of both the samples holds well under all the lights. It means that the dyeing, printing, and colouring of the sample are as per the requirement.