Rieker Druckveredelung GmbH + Co. KG Leinfelden, Germany · Rieker Druckveredelung GmbH + Co. KG Leinfelden, Germany . ... calendars/ cards labels business stationery magazines displays

Print finishing - why?

Gerhardshofen, 11. November 2013

Referent Dipl. Wirt.-Ing. (FH) Ralph C. Rieker

Rieker Druckveredelung GmbH + Co. KG Leinfelden, Germany

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.

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


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

How is Print-Finishing integrated in the printing process?

Customer Product

Idea

Job/Order

Printer, graphic design, agency

Concept

Print Finisher Print

Logistic, Assembly, Personalisation

Finishing

Text, Image

Previous Market Situation

How is Print-Finishing integrated in the printing process?

Current market situation

Inline Finishing

Agency Publisher

Digital Printing

Customer

Distribution

Finishing

Printing

Printer, In-house Finishing

Web to Print

Distribution Distribution directly to

the customer

Bookbinding

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


Which characteristics can be achieved with finishing?

1. Appearance

2. Haptics

3. Effects

4. Functional coating

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


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”


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


4. Functional coating

greaseproof/waterproof barrier varnish/barrier film

sealing properties blister varnish

bonding moistening rubbering

sales promotion window lamination

temperature control thermo reactive ink

slippage protection anti-slip varnish

product protection varnish gets visible by black light

scratch card coating hidden identification marks

Which process technologies are mainly used for print finishing?

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

The impact of the digital technology on the printing industry

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

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

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”

Thank you!

Rieker Druckveredelung GmbH + Co. KG

Max-Lang-Straße 62

70771 Leinfelden

Telefon: 0711-7587099-0

Telefax: 0711-7587099-111

[email protected]

Which defects lead to complaints?

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.



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-ink-primer/ 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



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



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 halftone 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.



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



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



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)



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 over- powdering 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.


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Rieker Druckveredelung GmbH + Co. KG Leinfelden, Germany · Rieker Druckveredelung GmbH + Co. KG Leinfelden, Germany . ... calendars/ cards labels business stationery magazines displays