Let’s print on CHROMOLUX

Premium Board and Label Paper

LET’

S P

RINT ON CHROMOLUX · LET’S P

RINT ON CHROMOLUX ·

It’s no coincidence that CHROMOLUX is not only the market leader but also a synonym for cast-coated papers. The name stands for a range of white and coloured fi ne papers, distin-guished by their extremely smooth and high-gloss surfaces.

“Let’s print on CHROMOLUX” is a tool no printing machine should be without. It is a compact yet handy set of instructions for printing on and processing CHROMOLUX.

This handbook covers all the important points you need to know when using CHROMOLUX as well as interesting background infor-mation. This is our way of demonstrating that CHROMOLUX is an extraordinary fi ne paper which is easy to print on and process.

Should you still have any questions, please do not hesitate to contact our service team at any time on +49 (0)2202 155 735. You can also fi nd more information at www.chromolux.de

We wish you every success with CHROMOLUX.

Extraordinary, but simple to print on

CHROMOLUX board range

g/m2 180 215 250 275 300 350 400Monochrome

CHROMOLUX 700 (premium white)CHROMOLUX 200 (white)CHROMOLUX 500 (packaging)CHROMOLUX color greyCHROMOLUX metallic titanCHROMOLUX magic rockCHROMOLUX color dark greyCHROMOLUX color black

Soft Tech

CHROMOLUX pearl frostCHROMOLUX magic chromeCHROMOLUX metallic silverCHROMOLUX metallic steel blueCHROMOLUX pearl anthracite CHROMOLUX color asphaltCHROMOLUX color deep blue Instinct

CHROMOLUX pearl champagneCHROMOLUX color creamCHROMOLUX metallic beigeCHROMOLUX metallic gold CHROMOLUX metallic copperCHROMOLUX sparkling truffl eCHROMOLUX sparkling mahogany

Virtual

CHROMOLUX pearl whiteCHROMOLUX color vanillaCHROMOLUX color jadeCHROMOLUX sparkling sandCHROMOLUX sparkling terraCHROMOLUX metallic kiwi CHROMOLUX color frogCHROMOLUX sparkling jungle

Energy

CHROMOLUX color yellowCHROMOLUX color sunshineCHROMOLUX color orange CHROMOLUX color redCHROMOLUX magic wineCHROMOLUX color greenCHROMOLUX color blueCHROMOLUX color oceanCHROMOLUX sparkling space

CHROMOLUX label paper range

g/m2 70 80 90 100 120 135g/m2 180 215 250 275 300 350 400 700 – embossings

CHROMOLUX 700CHROMOLUX 700 linCHROMOLUX 700 vergéCHROMOLUX 700 moiréCHROMOLUX 700 lignéCHROMOLUX 700 tissé

premium white – 900 – 900 E – pearl – metallic

CHROMOLUX premium white WSCHROMOLUX 900CHROMOLUX 900 ECHROMOLUX 900 E linCHROMOLUX pearl white CHROMOLUX metallic silverCHROMOLUX metallic gold

alu – alu chrome – alu gold

CHROMOLUX alu chromeCHROMOLUX alu E chromeCHROMOLUX aluCHROMOLUX alu linCHROMOLUX alu moiréCHROMOLUX alu lignéCHROMOLUX alu ECHROMOLUX alu SCHROMOLUX alu E SCHROMOLUX alu gold

All standard formats are available from merchants. Special formats are available in both running directions from the plant. Special makings are available on request.

What to pay attention to during transport and storage

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What to pay attention to during transport and storage

Facts at a glance …

Ensure optimum climate conditions in the storage and production rooms.

Room temperature should be 23 ºC and relative air humidity 45%–55%.

Wherever possible, avoid unnecessary climate fl uctu-ations.

Allow CHROMOLUX suffi cient time to adjust to the temperature.

Avoid damage to the pallet packaging. It protects the paper against climate fl uctuations.

Do not remove the packaging on paper pallets until just before printing.

Carefully repack the remaining pallets after printing.

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The right climateis everything

A few points to note …

… Paper is a printer’s most important working material. A lot depends on its quality. Perfect fl atness is essential for optimum print quality and problem-free fi nishing. This is also true of such a high-quality paper as CHROMOLUX.

… An unfavourable room climate may lead to deformation during storage. This has consequences for the printing process, the printed results and further processing.

… Key room climate factors are temperature and air humidity. Every care must be taken to ensure that these two infl uencing factors are perfectly matched to the material when transporting and storing of CHROMOLUX, before and after printing. The line between a favourable and an unfavourable climate must never be crossed.

… A whole series of printing and processing problems may be caused by deviations from the optimum room temperature and air humidity. A room temperature of 23 °C and a relative air humidity of 45%–55% are recommended for storing CHROMOLUX.

What to pay attention to when preparing the machine

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What to pay attention to when preparing the machine


CHROMOLUX 200 · 500 · 700 · 800

CHROMOLUX alu · color · magic · metallic · pearl · sparkling

No special printing requirements have to be met.

Print using offset machines with a good printing unit and fi ne fountain solution regulation.

Clean the machine (clean the ink duct, remove any residual inks, replace fountain solution and wash damping rollers).

Produce as many waste sheets as possible in order to achieve an optimum ink-water balance.

Ensure suffi cient ink reduction in order to prevent the printing ink from emulsifying (e.g. ink reduction bars).

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The fi rst steps are the easiest

The fi rst steps are the easiest

A few points to note …

CHROMOLUX 200 · 500 · 700 · 800


… Like all coated papers, CHROMOLUX 200, 500, 700 and 800 are simple to print on using all offset machines.

… CHROMOLUX alu, color, magic, metallic, pearl and sparkling have non-absorbent surfaces. They should be printed on using offset machines with a good printing unit as well as precise dosing and regulation of the fountain solution fl ow.

… Care should be taken when setting up the machine to ensure that the fl ow of water is kept to a minimum. Preferably, no water should be used at all (waterless offset printing). By constantly reducing the water fl ow, it is possible to arrive at the right amount of fountain solution. In order to achieve optimum ink-water balance,as many waste sheets as possible should be produced during set-up. Sheets of CHROMOLUX alu, color, magic, metallic, pearl and sparkling should always be used for the pre-run to guarantee a precise result.

… It is also essential to ensure adequate ink reduction. With a small print run, a colour reduction bar, positioned outside the offcut and running across the entire width of the sheet of paper, should also be printed. This increases the ink reduction and prevents the ink from emulsifying and losing its drying properties.

What to pay attention to with respect to the printing inks

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What to pay attention to with respect to the printing inks


Use inks with normal oxidative properties and which dry by means of absorption as you would for coated papers.

Do not use very inhibited inks, i.e. inks with an intense, fresh effect.

On the front side, only use special inks that dry purely by oxidation and that are suitable for non-absorbent materials.

Standard inks can be used on the rear sides.

CHROMOLUX 200 · 500 · 700

CHROMOLUX 800


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The importance of ink

The importance of ink A few points to note …

CHROMOLUX 200 · 500 · 700

CHROMOLUX 800


… The quality of the printed result depends on how the ink dries on the paper. For this reason, paper and ink must be precisely matched.

… Despite their extreme smoothness, the surfaces of CHROMOLUX 200, 500 and 700 have adequate absorbency. Printing inks can be absorbed relatively quickly and dry rapidly by means of oxidation. This is true of all inks which dry normally (by oxidation as well as by absorption) and are used for coated papers. The rather slower absorption method can be ignored – provided you adapt to this. Optimally coordinated dry spraying is advisable, particularly when printing diffi cult motifs.

… CHROMOLUX 800 is a board which is coated on both sides. Although no special inks are required, anything that might have a negative effect on the oxidative ink drying should be avoided. It is advisable to avoid very inhibited inks, i.e. inks with an intense, fresh effect.

… As a result of their special surface fi nishing, CHROMOLUX alu, color, magic, metallic, pearl and sparkling have non-absorbent front surfaces. This means that inks cannot be absorbed by them. The dry sprayed powder forms a protective barrier between each sheet of paper. Therefore, it is only possible to use special inks that dry by means of oxidation alone. As well as using the right printing ink, adequate ink reduction must be ensured.

What to pay attention to when printing

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What to pay attention to when printing


The white shades perform well in offset printing under normal conditions.

Ensure that the water fl ow is at a minimum.

Do not set the pH value of the fountain solution below 5.0.

Do not use any acidic fountain solution additives.

Do not use printing aids, in particular common sprays.

Prevent ink rub-off by means of adequate dry spraying.

Stack the printrun in smaller quantities.

CHROMOLUX 200 · 500 · 700 · 800


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Applying pressure

Applying pressure A few points to note …


… As for all non-absorbent materials, the following rule of thumb also applies to CHROMOLUX alu, color, magic, metallic, pearl and sparkling: use as much fountain solution as necessary, but as little as possible.

… To ensure perfect ink drying, you must ensure that the fl ow of water is kept to a minimum. Other key elements are the chemistry of the fountain solution and its pH value. Acidic fountain solution additives should be avoided at all costs as they have a negative effect on the ink drying process.

… Printing aids should also be avoided when printing on CHROMOLUX alu, color, magic, metallic, pearl and sparkling. They should only be used if expressly permitted by the ink manufacturer. The same applies to sprays which are used, for instance, as refreshing agents or as anti-drying agents during short downtimes.

… In the case of non-absorbent materials, the ink may rub off due to increased pressure within the stack. This can be prevented by means of optimally coordinated dry spraying. The dry spraying powder forms a protective barrier between each sheet of paper. It thus acts as a spacer, separating the sheets and assisting the fl ow of oxygen. This improves the oxidative ink drying.

What to pay attention to when fi nishing

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Board grooves

A = c c = 0.4 mm d = 0.7 mm B = (c x 2.0) + d (possibly B + 0.2 mm)

Crease procedures

Binding procedureFolding printed media, e.g. cover · brochures · folders

Folding box procedureFolding boxes · 4x grooved cover (hinge grooving)

What to pay attention to when fi nishing

A = groove channel depth B = groove channel widthc = board thicknessd = groove steel strength (groove knife rounded)

Outside

Outside


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CHROMOLUX is excellently suited to grooving, scoring, folding and punching.

The grooving should be parallel to the run direction.

The following is recommended for calculating the overlay and the groove steel for CHROMOLUX board: A = c B = (c x 2.0) + d (possibly B + 0.2 mm)

When grooving cast-coated boards, the swell should usually be inside.

In the case of grooves with the coloured board surface inside, the ink layer may break open. For this reason, we recommend tests are carried out in advance.

CHROMOLUX is suitable for all fi nishing techniques.

When fi nishing metallised CHROMOLUX surfaces, cellophane coating is advised in order to avoid pigment shifts.

Now for the big fi nish

Now for the big fi nish A few points to note …

CHROMOLUX metallic

… CHROMOLUX is a cast-coated fi ne paper. It has an extremely smooth, high-gloss surface that makes it unique and unmistakable. Compared to machine-coated papers, it has higher bulk and greater rigidity. All these factors have a positive effect during the fi nishing process.

… Its high bulk gives CHROMOLUX excellent groove properties. Thanks to its great rigidity, it is excellent for all kinds of punching.

… The results achieved by CHROMOLUX using conventional fi nishing techniques are particularly impressive. Its extremely smooth surface makes it ideally suited to blind and relief embossings, embossed fi lm printing and all forms of lamination and varnishing.

… More unusual fi nishing techniques such as bronzing, glitter varnishing, iriodin effects and laser punching can also be used with excellent results on CHROMOLUX.

… Phenomena similar to folding breakage may occur during refi nement of all metallised board surfaces as a result of metal pigment shifts. To prevent this, it is advisable to coat the surface with cellophane.

M-real Zanders GmbHAn der Gohrsmühle51465 Bergisch GladbachGermanyTel. +49 (0)2202 15-0

[email protected] www.m-real.com

Let’s print on CHROMOLUX

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