The main objective of any surface treatment method is to increase the energy of film’s surface for improving wet-out and adhesion of coatings, inks and adhesives used in converting process. Surface treatment of films/substrates may involve several techniques like corona discharge; flame treatment; priming and chemical etching. This could be an expensive proposition besides increasing the lead time.
To alleviate this problem, India’s largest multinational flexible packaging materials and Solution Company Uflex Limited has launched a special polyester film, F-PDP with modified surface on one side while the other side remaining untreated. This film is digitally printable without any need for priming/ coating.
This film can be directly printed without requiring printing plates/ cylinders as in the case of conventional printing process. Additionally, the film demonstrates good transparency; optical clarity; excellent machinability and dimensional stability besides offering excellent flatness and agile handling properties.
The polyester (PET) film F-PDP has been certified by Rochester Institute of Technology for digital printing by Indigo commercial and sheet fed presses.
There are a multitude of benefits associated with digitally printable PET films:
- Suitable for small run jobs particularly for new launch or re-launch of products;
- Minimizes lead time at the converter’s end because no primer/ coating is required;
- Gives excellent print results with high-quality resolution for pictures and half-tone jobs using primary colors i.e. C,M,Y,K and White giving results at par with conventional printing even on transparent substrates;
- Option of special colors like Gold, Silver etc. can further impart depth in printing;
Talking further about this specialised polyester film, Mr. Pramod Sirsamkar, President – Technical & New Product Development (Films), Uflex Limited said, “Depending upon the requirements of the ensuing converting process, we can offer F-PDP film in various thicknesses ranging from 10-50 microns. The demand for this substrate is quite encouraging both in India as well as overseas as a result of which we are manufacturing it at all our plants i.e. India, UAE, Poland, Egypt, Mexico and USA.”
Mr. Ashok Chaturvedi, Chairman and Managing Director, Uflex Limited hailing the recent innovation said, “Digital Printing spells out immense convenience for convertors in terms of economized costs; suitability for shorter print runs; less set up time compared to offset printing and unmatched print consistency among others. I am happy that Uflex has engineered a special polyester substrate that is perfectly receptive for digital printing without requiring any priming/ coating or special treatment.”