Pharmaceutical Packaging

producers can ensure product feasibility and print quality consistency with the sample/proof regarded as a true visualisation of the reproduction process.

TRIALLING UNFAMILIAR MATERIALS The FlexiProof 100, FlexiProof UV and FlexoProof LED UV provide a high degree of flexibility and are sometimes used instead of a production press for trialling unfamiliar materials, inks, substrates, etc. Printability issues such as gloss, durability, scuff, chemical resistance can be determined. It is also possible to see how ink and substrates and other elements of processing and adding value perform and react over time. For manuufacturers and for converter

supermarket: products not officially regarded as being harmful: much effort is given over to presentation. Eye catching designs, bold use of graphics and text without hyperbole is generally judged acceptable or permissible. For other products, for those items with a

degree of risk, those prescriptive medicines; the behind the counter pharmacy product that are usually dispensed by a health care professional such as a chemist, etc., printing and packaging product presentation is approached differently.

COLOUR CONSIDERATIONS Colour must be selected with care; colour contrast between the text and label background for instance must afford for optimum legibility of text. Colour or colours must not clash or obscure that legibility of the text. The use of high visibility logos, decorative bars or stripes and embossed or de-bossed decorative elements are generally discouraged because they draw attention away from possible important information and add to label and carton clutter. In some instances the label surface has become crowded as a result of the need to provide safety information and warnings, sometimes in several languages. This resulted in printed surfaces veering towards the unreadable, with information that could easily be overlooked. Printed leaflet labels, which have come on the scene in recent years, addresses this issue to some extent. Colour plays an increasingly important

role in the production and distribution of prescriptive medication. For instance, most pharmaceutical packs incorporate standard features such as the name of the drug as well as printed details such as dosage, etc. Colour is often used for colour coding. Colour, signalling the particular strength of a May 2019 25

medication and is regarded as a necessity particularly in cancer treatment. Colour coded packaging minimises the risk that a pharmacist, dispenser or other health care worker will issue the wrong dose. The fact that a pack of 25mg Lenalidomide used to treat many blood and bone cancers has a striking blue background and the 15mg version is printed in bright green is a reliable visual cue for dispenser and patient. Colour communication, proofing and

quality control/product monitoring and R&D systems ease print processing difficulties and are available for major print processes including flexography and gravure. Systems such as the FlexiProof for users

and producers of flexo inks can be used for quality control; presentation purposes (proofs), research and development and for computer colour matching data, trialling and product development. Printers and converters, as well as consumable

involved in using gravure or both gravure and flexo other devices developed by RK Print Coat Instruments have come on stream. The K Printing Proofer for instance is able to handle any flexible substrate including, films, boards, aluminium foils, PVC, etc, which may be printed or laminated. With this deviece high quality proofs using gravure, gravure-offset or flexo inks may be obtained in an instant. Furthermore, excellent printability is ensured with fine micrometer control (0.01mm) of impression and doctoring settings. Another device is the K Gravure Coater. This incorporates a microprocessor- controlled servo-drive and employs the same electronically engraved printing plates that are used to great effect on the company’s revenue generating Printing Proofer system. In operation, ink is transferred from an

electronically engraved plate directly onto the substrate, which is attached to the rubber impression roller. Doctor blade and roller adjustments are made pneumatically and repeatable settings can be made for future tests.

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