Using BOPP (polypropylene), “Curl-free” or PET films, ‘coating’ (or cello-sheening) provides the desirable ‘wet’ look finish to a range of products at affordable prices and fast turn-around times.
Book jackets, covers, dividers, post-cards, business cards, flyers, labels, brochures and posters are just some of the many items suitable for ‘coating’.
The films used by Camwell provide;
Good folding and cutting characteristics
Are ideally suited for short runs. (Company speciality)
Have no curing time required, therefore quicker turnaround times than wet glue methods
Are available in gloss or matt in BOPP & “Curl-free” (matt Curl-free is very limited in size availability)
A Satin finish is available in a PET film
“Curl-free” film provides an end to troublesome ‘curl,’ common to coating using BOPP (polypropylene) film, on lighter weight papers.
Some papers as light as 120gsm, may be coated on one side only but this is entirely dependent on the structural integrity of the paper stock and the print method.
The ‘Digital’ age in printing has provided the ‘coating’ industry with a number of challenges. Finishing oils, plasticized toners and a variety of ink-jet/laser formats are used in various digital copiers and printers. These products can and do create barriers to the bonding of standard adhesive films.
To combat this, Camwell uses a range of ‘Hi-tack’ and ‘superstik’ films in both gloss and matt finishes. There is a satin finish available in the ‘superstik’ PET film.
Current paper stocks also pose challenges in quality of finish and in structural integrity. Problems can and are amplified when the stocks are digitally printed and are exposed to quite high ‘fusing’ temperatures. Feedback and good 2-way communication is very important to try to minimize these issues.
As with all ‘coating’ there are guidelines that are necessary to be met to ensure high quality results.
Sheets provided for ‘coating’ must have trim areas (10mm on all edges free of ink or toner is a good minimum rule-of-thumb). Trim marks or key lines are very important in aiding production.
Paper stock preferred is smooth art boards. (Other papers can be coated quite successfully, but grain patterns may show when using dark colours or in solid print areas. Please note, some recycled art boards may also have uneven surfaces and can provide lower quality results).
Minimum paper weight - 150gsm (N.B. This is dependent on the structural integrity of the stock. Digitally printed stocks in this weight category have severe issues with distortion which may not allow the paper to be coated.)
Minimum area - A6 approx (120mm 160mm) .
Maximum area - A2 (420mm x 594mm) plus trims
Some digital papers/inks (inkjet and colour copy) & label (self adhesive) stocks
are suitable for ‘coating’, whilst others are not.
Camwell will gladly conduct tests to determine the suitability of paper stock being used for the first time.