30 High Speed Extrusion Coating Lines

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Text of 30 High Speed Extrusion Coating Lines

  • COATING LINES

    www.sml.atSML MASCHINENGESELLSCHAFT MBH BUNDESSTRASSE 1A A-4860 LENZING AUSTRIA - EUROPE PHONE: +43 7672 912 0 FAX: +43 7672 912 9 EMAIL: SML@SML.AT

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    SML customised line design for every product Extrusion coated and laminated products are used in a large number of differing market segments and can range from simple PE coated substrates to fast running coated nonwovens for hygiene applications and to complex multilayer barrier structures for fl exible packaging. Dedicated line concepts are therefore essential to the fulfi lment of specifi c customer requirements with regard to both products and output. SML designs reach from simple extrusion coating lines to sophisticated tandem coextrusion lamination lines.

    SML coating lines are fi tted with high-output extruders for materials as diverse as polyolefi ns, EAA, EVA, EVOH and ionomers. Coextrusion involving up to 9 layers and production speeds of up to 600 m/min are both possible, while unwinds can be of shafted or shaft-less design and are able to handle a variety of substrates that includes paper, BOPP, PET and BOPET fi lms, PA, aluminium foil and metallised fi lms. In this context we would like to mention SMLs turret unwinds EcoFlex and PowerFlex.

    Feed block technology and automatic dies with an adjustable, internal deckling system and edge beadreduction in combination with single or differential

    thickness measurement assure an optimum cross profi le distribution. The coating unit is equipped with a large-diameter cooling roller and a non-sticky rubber pressing roller with steel support roller. Contact pressure and gap of both sides is individually adjustable. For over-coating a tefl on tape attachment is provided.

    Furthermore, in order to achieve perfect adhesion between the different substrates, the lines can be equipped with treatment systems such as for example corona treatment or liquid primer stations. Web handling includes sensitive web tension control and edge trimming by shear cut, crush cut or razor blade slitting devices.

    SML has a complete portfolio of winders for coating applications. Its surface contact winders series W100 are basic models suitable for paper and fabric applications. Turret winders series W1100 are designed for medium speed while the horizontal sliding winder W2000 is the high end model for high speed. All these winders are able to slit rolls inline. Thus the SML winder programme is both comprehensive and attractive, which enables SML to deliver customised turnkey plants with an excellent price/performance ratio.

    HIGH-SPEED EXTRUSION COATING LINES

    SML-00011_Produktbl_COAT.indd 1 21.10.2010 10:30:55 Uhr

  • line confi guration

    product

    www.sml.atSML MASCHINENGESELLSCHAFT MBH BUNDESSTRASSE 1A A-4860 LENZING AUSTRIA - EUROPE PHONE: +43 7672 912 0 FAX: +43 7672 912 9 EMAIL: SML@SML.AT

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    Applications: snack food bags, soup sachets, wrap paper, medical pouches, vacuum packaging, barrier fi lms, hygenic fi lms, customised laminates

    Raw materials: LDPE, LLDPE, HDPE, PP, EVA, EAA, EVOH, masterbatchCoating weight: 8 - 80 g/m, others on requestSubstrates: papers, fi lms, nonwovens, aluminium foil, metallised fi lmsFinal end fi lm width: up to 2400mm

    RAW MATERIAL HANDLINGFeeding system: individual pneumatic hopper loadersGravimetric dosing: up to 6 components per extruderExtruder output control: integrated in SML control system

    EXTRUSIONExtruder diameters: 60 / 75 / 90 / 105 / 120 / 135 / 150mmL/D ratio: 28 or 33, depending on raw material and extruder sizeMelt fi ltration: hydraulic screen changersMelt pumps: available on requestCoextrusion structures: up to 9 layersExtrusion die: automatic die with cross-profi le control

    UNWINDBasic concept: turret unwinds shafted or shaftless design, depending on type and application

    COOLING UNITRubber pressing roll: rubberised roller, temperated seperately adjustable pressing gap and pressing forceSupporting roll: steel roller, driven and temperatedCooling roll: chrome-plated roller, driven and temperatedRoller width: 1500 / 1800 / 2600mm, others on requestFeatures: tefl on tape attachment, strip-off roll, spreader rollersMechanical line speed: 300 / 600 m/min

    ADDITIONAL EQUIPMENTThickness measuring: beta and refl ective infrared gauge single frame or two frame system for differential measuringCorona treatment: one-sided, double-sided or reversible treatment

    TRIMMINGKnife: shear cut system Inline slitting: up to 9 part bobbins

    WINDINGBasic concepts: series W100 surface centre winder series W1100 turret winder series W2000 horizontal sliding winder

    AUTOMATION SMILE control system

    HIGH-SPEED EXTRUSION COATING LINES

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