Print finishing - why?

Transcription

1 Print finishing - why? Referent Dipl. Wirt.-Ing. (FH) Ralph C. Rieker Rieker Druckveredelung GmbH + Co. KG Leinfelden, Germany Gerhardshofen, 11. November 2013

2 Company portrait Since 1906 is the Rieker print finishing company specialising in finishing and coating of print products. The company is now in the hands of the 4th generation We are a medium-sized enterprise with 28 workers in Leinfelden, near Stuttgart.

3 Your ideas varnished by Rieker What is Print Finishing? The coating of paper and cardboard packaging with films, varnish and pigments is called print finishing Already printed papers are going to be coated hence they become special characteristics All that is closely linked with logistical service between printing press and print finishing

4 Your ideas varnished by Rieker Why are printed products offline finished? increases the value of print products makes is extraordinary- effects optical highlighting of graphic elements increases curiosity it is a part of a creative concept it is used as a part of the brand/ CI indispensable component makes the product durable protects replaces costly materials it is necessary for further processing

5 How is Print-Finishing integrated in the printing process? Previous Market Situation Customer Product Idea Job/Order Printer, graphic design, agency Concept Text, Image Print Finisher Print Logistic, Assembly, Personalisation Finishing

6 How is Print-Finishing integrated in the printing process? Current market situation Customer Agency Publisher Digital Printing Printing Web to Print Inline Finishing Finishing Printer, In-house Finishing Bookbinding Distribution Distribution Distribution directly to the customer

7 Your ideas varnished by Rieker Which printing products can be varnished? book covers/ books catalogs packaging calendars/ cards labels business stationery magazines displays maps/ Poster office products ring binders annual reports mailings

8 Which characteristics can be achieved with finishing? 1. Appearance 2. Haptics 3. Effects 4. Functional coating

9 Which characteristics are achieved with finishing? 1. Optic finished surfaces increase the colour brilliancy/dot gain matt/gloss strong contrasts by spot coating metallic surfaces special films/printed/coated/laminated structured surfaces highlighted images + Logos visualisation just with coating scattered prints embossing relief varnish

10 Which characteristics are achieved with finishing? 2. Haptics velvet straight surfaces soft-touch rough surfaces raised elements relief varnish/ embossing flocking textile surfaces textile-effect-films full surface embossing (structure) scratch- resistant coating digital print enhancement Scodix

11 Which characteristics are achieved with finishing? 3. Effects glitter pigments Iriodin latent image effect luminous ink after glow ink fluorescent ink magnetic ink match reactive ink scented varnish foil transfer cold/hot foil stamping effect films e.g. Holography photochrom daylight-sensitive

12 Which characteristics are achieved with finishing? 4. Functional coating greaseproof/waterproof sealing properties bonding sales promotion temperature control slippage protection product protection scratch card coating barrier varnish/barrier film blister varnish moistening rubbering window lamination thermo reactive ink anti-slip varnish varnish gets visible by black light hidden identification marks

13 Which process technologies are mainly used for print finishing?

14 Which process technologies are mainly used for print finishing? film lamination full surface paper-film-composite full surface embossing structure embossing flexographic varnishing coating plate/ coating blanket spot coating screen printing hot foil embossing pigment transfer (heat) cold foil embossing pigment transfer (adhesive) blind blocking 1-level/2-level cutting, creasing, perforating, laser- cutting digital enhancement

15 The impact of the digital technology on the printing industry

16 Influences of the digital technique to the printing industry since the integration of the internet the printing volume has still increased the paperless office has not proven true, so far digital printing technologies enable print-on-demand modern data based applications and web-to-print are the answer to changing channels of communication a digital workflow allow shorter processing times and rationalization the printing market is in a significant structural change -> Full service vs. online printing the media channels have to complement one another, media convergence is the approach to modern marketing

17 Why have print finishing products a future in the media world?

18 Why have finished printing products a future in the media world? Future of print finishing products enables completely new design levels makes print conceivable, makes it touchable haptic and visual stimulation differentiation of print towards other media channels durability -> longer duration of use high value -> products are not thrown away promptly sustainable appearance effects or functions which are adapted to the content Trend: quality rather than quantity

19 Rieker Druckveredelung GmbH + Co. KG Max-Lang-Straße Leinfelden Telefon: Telefax: info@rieker-dv.de Thank you!

20 Which defects lead to complaints?

21 Welche Fehlermerkmale führen zu Beanstandungen? Error catalogue print finishing 1. Wetting disorders Varnish or glue cannot sufficiently adhere on the undercoat (paper/ink) hence they cannot build a proper wettability friable surface Reason for that is an insufficient surface tension, printing surface > 35mm/m (dyn), e.g. because of fresh ink or admixtures like drying agents, rub restistant pastes or silicones (heatset) Error indication: varnish contracts partially, foil lamination is delaminated.

22 Welche Fehlermerkmale führen zu Beanstandungen? Error catalogue print finishing 1. Chipping Varnish does not stick on or with the undercoat and when it comes to adhesion the varnish peels of the undercoat, heat embossing /stamping foils, grooving or on the crop margins The reason for that is an impaired layer layer build-up paper-inkprimer/ varnish for the offline coating surface tension of layers, colour pigments (metallic), paper or rather the coated surface (absorption) and Scotch tape resistance of the primer and varnish Error indication: varnish peels off during mechanical stress, fingernail test/ Scotch tape test, in some cases even paper coat comes through

23 Welche Fehlermerkmale führen zu Beanstandungen? Error catalogue print finishing 1. Bleeding/Changes in colour The printing ink changes itself with regards to the shade after the foil lamination/ varnishing. Reason for that are colour pigments which do not fulfill authenticity accroding to DIN 16534, e.g. reflex-blue Error indication: wrong colour shade is mostly faded To put this right,authentic special colours need to be mixed or one need to inform the finisher in advance that tests must be made

24 Welche Fehlermerkmale führen zu Beanstandungen? Error catalogue print finishing 1. Dot gain Film laminations and high- gloss varnishing lead to a significant dot gain when halftone print motifs are produced. The colours and the contrast seem to be more intensive than products without any coating. Reason for that is the refrection of the light in the foil layer or rather the varnish layer. For human eyes grid points appear to be bigger, especially when it comes to logos and half- tone colour areas it becomes very disturbing. Only with the help of litho and test laminations is it possible to counteract. The change can be simulated by sticking a Scotch tape on to the sheet during the adjustment at the printing machine.

25 Welche Fehlermerkmale führen zu Beanstandungen? Error catalogue print finishing 1. Blocking/Bonding The coated sheets stick together at the edges or even extensively. Reasons for that is a bad varnish drying, stacking pressure is too high, moisture acculumation/consendation within the stack (packaging/storage), thermoplastic and hydrophoilic paper coating Error indication: Bonding with the chipping of varnish, chipping of colour or chipping of the coating Not to be confused with adhering sheets due to the effect of glass paletts

26 Welche Fehlermerkmale führen zu Beanstandungen? Error catalogue print finishing 1. Creasing Foldinglines and creasings break open during the processing and the use (white breaking edges) Reason for that is always attributable to a print substrate defect, because the line with the colour and the varnish breaks open (running direction, paper moisture). With the help of film laminations can such issues be avoided Error indication: especillay on darker areas are these breaking edges clearly noticeable up to the fibre core

27 Welche Fehlermerkmale führen zu Beanstandungen? Error catalogue print finishing 1. Scrubbing Especially coated products can be susceptible to abrasion, high- gloss and matt surfaces are particulary susceptible. A common reason for that is printing powder on the front and on the back of the sheets or it is only because of bad packaging. Error indication: the final products are extensively scratchted or they have visible flaws due to the processing (bookbinder)

28 Welche Fehlermerkmale führen zu Beanstandungen? Error catalogue print finishing 1. Traces of printing powder Powder particles disturb the creation of the film or they are going to be trapped underneath the film. The reason for that is an uneven powdering and a overpowdering or residual printing powder which, due to vibration, fall on the ground in between the printing machine (Puderkometen). Error indication: extensively and evenly distributed powder particles become visible due to the print finishing process and especially trapped powder particels underneath the film lead to an greyish and blemished appearnce, which is rather disturbing.

29 Welche Fehlermerkmale führen zu Beanstandungen?

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