Dumor Multilam 460, Multilam 660 Dual, Multilam 360 User Manual

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MULTILAM 360 MULTILAM 460

MULTILAM 660 Dual

USER MANUAL

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The MULTILAM laminators are available on several sizes 36 cm / 46 cm / 65cm / 110cm and optional stands can be used in several conﬁgurations

NOTE: Keep about 1M of free space behind the machine for the product to run out. To let the product bunch up will destroy the laminate !

Applications

From the roll of pet or bopp ﬁlm

Cold / warm pressure sealing using pressure sensitive ﬁlm (requires rewinder accessory)

Hot double sided lamination

Hot single sided lamination (not 110)

The machine consists of

2 roll unwinders, upper and lower sizes (usually 1 and 3inch, 2inch optional

- Brakes for each unwinder to keep the web tension and to eliminate web wrinkles.

(1) (1a) see pictures at end of the manual

)

, each with the possibility of several mandrel

(2)

- Paper rewinder for taking up the paper used as a backing for sticky ﬁlm (on the model 110 only)

- 2 ﬂoating tension rollers to tension the ﬁlm web.

- 2 pressure rollers that can be warm or cold.

- 2 traction rollers

- A pressure lever

- A control panel

- A single side switch

(5)

(6)

(7)

(8)

(3)

(4)

- A pressure lever

- An adjustable side guide (9)

Decurling system with 2 adjustment knobs (10a) to raise and lower the de curlers (not on the model 110)

- De curler with roller

- De curler with bar

Plexiglas guard : note if the guard

(10)

(11)

is not engaged and the locking pins are not fully home the unit will not heat up or

run !

Optionally

- A pair of ﬁlm stripper slitters (12) to cut ﬁlm to a reduced width (on the upper carrier)

- A ﬁlm cross slitter at the exit: if using this the ﬁlm transport must be stopped !!!

-Extra high upper roll holder arms (pair)

Note: The 660 and 110 models come with a stand , the smaller models are table mounted The stand is in the crate hidden under the main carton!!! Don’t make the mistake of throwing it away !

On the control panel

- Forward button

- Reverse button

- Stop button

(a)

(b)

(c)

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Temp setting button Up/ Down

(d)

Hot / Cold selector LED temp display

(e) with last setting memory note that the sensor is very sensitive and will display any small change

in the roll temp. The roll temp will tend to reduce when laminating due to the heat being transferred to the substrate. In this case its important to have the ﬁlm and substrate at least 24°C or too much heat will be sucked away from the roll and the adhesion and lamination performance will diminish. Speed selector from 1 to 9 (9 = approx 3m/min)

(f)

Note lamination is a very precise job

- It is easy to get a poor result due to :

- Wrong ﬁlm used

- Wrong temp=> no adherence or if too high burning the print

- Wrong speed => poor adherence

- Wrong substrate (too much silicone or coating)

- Wrong pressure (larger bubbles)

- Dusty substrate (ﬁlm will have micro bubbles)

- Powder on substrate (ﬁlm will not adhere)

- Dust in the air (will make bubbles under the ﬁlm)

- The room should be almost a “clean room environment“ for a good result

- Don’t blame the machine for the above mistakes !!!

Cold lamination all models The ﬁlm is threaded through the rollers avoiding the de curlers (straight through) ( see the machine diagram) making sure that the sticky side of the ﬁlm is always kept away from the roll surface! The two ﬁlms must be in line with each other (not offset)

Keep at least 1 meter of free space at the exit of the machine to allow the ﬁlm to run out !

The ﬁlm is already tacky at room temp Lower the upper roll to meet the lower roll and start the machine up (forward button). For cold lamination a higher pressure setting on the lever will be needed to chase out bubbles.

- Run some ﬁlm through the machine until the tension is steady (seen by having a wrinkle free web). In the case of using a paper backing use the rewinder on the 110 model to take up the paper. If the wrinkles do not disappear fast you have not well aligned the track of the ﬁlm or there is not enough brake tension.

Once the ﬁlm is running well and wrinkle free, align and slide in the substrate to be covered. For encapsulation leave about 1 cm between the sheets.

Once ﬁnished raise the rolls. Never store the unit under roller pressure or you will get ﬂat spots on the rolls !

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Hot lamination double sided 70 micron pet ﬁlm on up all models

Heating on both rolls => ON

The ﬁlm is threaded in the machine following the diagram not using the anticurling system. Lower the pressure rollers and start the machine, pressure setting medium. Once the ﬁlm is wrinkle free insert the substrate carefully.

Select the appropriate temp for the ﬁlm you use Note that generally :

Thinner ﬁlm = less temp / slightly higher speed eg 120/ 130°C, speed 4 or 5 Thicker ﬁlm = more temp / lower speed eg 140°C, speed 1 or 2

There is no hard and fast rule, ﬁnd the best setting by trial.

Attention, a too high temp will tend to burn off the ink on digital print and cause speckling!

NOTE:

• Freshly printed Xerox®/Konica® production should be left to air for several hours before trying to laminate to let the silicone oil evaporate.

• The different kinds of print will require different kinds of adhesive on the ﬁlm eg super sticky for Xerox/Konica paper.

• On wax based printers the darker colours are thicker than the lighter colours due to more wax being applied to darken the colour. This means that you can see a difference in the ﬁlm height around the contour of proﬁle of the colour being covered by the ﬁlm.

• The edge seal of the ﬁlm on thicker substrates may not wrap fully due to the thickness of the substrate.

• If you trim the ﬁlm close to the substrate the adhesion and sealing will be diminished.

• As soon as you stop the production raise the rolls or ﬂat spots will occur !

Single side lamination using bopp ﬁlm of ca 25 - 30micron models 360 / 460 / 660 In this case only the upper roll holder is used and the only single side switch is enabled on the back of the machine

Feed the ﬁlm through the de curler you need to use.

Thicker paper => roller de curler Thinner paper => bar de curler

By trial you will ﬁnd the right height of the de curler to get the ﬂat output

Output curling upwards => increase the de curler height Output curling downwards => decrease the de curling height

Speed 1 to 3 depending on the ﬁlm Pressure setting higher Heat ca 110°C to 120°C A too high temp will blister the digital print ! Optional ﬁlm strippers in position and engaged to cut the ﬁlm to width

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Insert scrap paper before lowering or you will foul the opposite roller ! The scrap paper is to get the ﬁlm web and machine stabilised before committing to produce. Film must be narrower than the paper or you will foul the opposite roller !

Have the next sheets ready to insert ! Infeed overlap the sheets by ca 5 mm to avoid fouling the opposite roller !

• Lower the rolls

• Start the machine

• Let the wrinkles disappear

• Keep feeding continuously !

• Once stabilized use the real paper

• Be careful always to keep an overlap !

• Last sheet is scrap paper !

Once ﬁnished raise the rolls and turn OFF

If you use the ﬁlm stripper wheels you will need from time to time to remove the waste ﬁlm or the cutters will jam on the roll. The wheels are a wear part.

MAINTENANCE Unplug the machine, let the machine cooling !

- Clean the rolls with rubbing alcohol to remove glue deposits

- Make sure brake is working

- Make sure tensioner rolls are free moving

- Make sure the rolls are not worn and are with no ﬂat spots

The silicone rolls are wear parts and may need to be changed after some years of use.

There is a drive chain in the side frame and it should be greased each year by a trained technical person.

SPECIFICATIONS

Width 360mm / 460mm / 660mm with anti-curling, single or double sided Control panel Digital Optional ﬁlm thickness From 20 mic bopp for single-sided use to 200 mic pet for double-sided use Types of anti-curler ﬁtted Roller and blade Substrate To 2mm Warm up time 10 minutes Temperature adjustment Cold up to 150°C Speed adjustment From 0.3 to 2 m/min in 9 steps Option Film trimmer rotary knives with guards Film perforator for easy tear Weight 30kg / 44kg / 55kg Size 62 / 76 / 91cm(H)×52×40cm Power Supply 220V/50HZ

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PICTURES

distance

PRESSUREPRESSURE

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HOT

DOUBLE SIDED

ANTICURLING

300M

DIAGRAM

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