100% , eXt rusionCAST FILM LINES HYGIENE FILM

CAST FILM LINES CAST FILM LINES LINES FOR HYGIENE BACKSHEET INTRODUCTION The use of hygiene products is steadily expanding worldwide. While growth rates in the developed markets are consistent, major new demand is coming from the rapidly growing populations in Asia, Africa and Latin America. Higher living standards lead to a desire for greater convenience with regard to the use of disposable hygiene products. Breathable film, melt embossed film or cloth-like laminates are used for backsheets in baby diapers, for incontinence products, sanitary napkins, protective clothing, nursing pads, disposable...

CAST FILM LINES CAST FILM LINES LINES FOR HYGIENE BACKSHEET CONTENTS Line Description Extrusion Unit Downstream Equipment Winding Systems

CAST FILM LINES CAST FILM LINES MACHINE DIRECTION ORIENTATION (MDO) CORONA TREATMENT FILM INSPECTION UNIT TRIM HANDLING SYSTEM (not illustrated) SMILE CONTROL SYSTEM MELT EMBOSSING UNIT WINDING SYSTEM RAW MATERIAL DRYING SYSTEM (not illustrated) RAW MATERIAL FEEDING AND DOSING

CAST FILM LINES CAST FILM LINES multilayer extrusion unit RAW MATERIAL DRYING SYSTEM Compounds with a high CaCO3 content are used for breathable hygiene films. The mineral fillers are hygroscopic and must be dried prior to the extrusion process. SML employs economical and highly energy-efficient dry air systems for this purpose. Adequate drying is a precondition for good film quality. After drying, the material is fed to the extruders by dehumidified air, which guarantees that the material does not reabsorb moisture. This system consits of 2 dryers - one for virgin material and the second for...

CAST FILM LINES CAST FILM LINES 11 extrusion tool unit Effective melt filtration, for the removal of impurities, unmelted or cross-linked particles, is most important. SML installs hydraulic piston filters in it's hygiene backsheet lines. Optionally all adapters can be equipped with insulation between extruder and feedblock. Extruder size SML extruders for hygiene films are of universal design and suitable for all relevant polymers and compounds which are used in this market. A selection of standard versions is available, with screw diameters ranging from 60 to 150mm. As a rule, the extruders...

CAST FILM LINES CAST FILM LINES melt embossing unit with thickness measuring frame jj MELT EMBOSSING UNIT A fully automatic unwinder is integrated into the design of lines for the production of cloth-like laminates. The PowerFlex turret unwind can be used for substrates with a maximum roll diameter of 1,500mm. Core clamping is done shaftless, with pneumatic actuated chucking heads, which can be equipped with adaptors for all common core diameters. For loading and unloading, integrated lifting tables are employed, which bring maximum flexibility and minimum changeover time for roll handling. An...

CAST FILM LINES CAST FILM LINES clothlike production The unique design of our melt embossing unit enables the production of the three main backsheet products for the hygiene industry on the same line! ¡ ¡ ¡ melt clothlike breathable SML places the thickness-gauge unit directly on the chill roll frame behind the last chill roll, to achieve the shortest possible distance from the extrusion die to the measuring point. This results in minimum space requirements and very accurate film thickness regulation. SML supplies automatic gauging systems with beta-ray sensors. After leaving the melt embossing...

CAST FILM LINES CAST FILM LINES CORONA TREATMENT UNIT In order to prepare the films for subsequent offline-printing processes, it is necessary to install a corona treatment unit. This is equipped with an electrically driven, water-cooled treatment roll and a nip roll to avoid backside-treatment of the film. FILM INSPECTION SYSTEM An optical film inspection system facilitates quality and process control for all hygiene products. The system is installed directly in front of the winder and consists of an illumination bar and cameras. The measurements of the inspection system are displayed on a separate...

CAST FILM LINES CAST FILM LINES 12 WINDING SYSTEMS SML offers different types of winders for the production of hygiene struction, which is able to resist the dynamic films and laminates, such as turret winders for mother rolls and forces that are generated at high production horizontal sliding winders for slit roll production. speeds. For many years, SML has invested major efforts to build its own Each winder is equipped with a large, 17-inch peak performance winders. Every new product, idea or touch screen. requirement, which is spotted in the market, or is the object of a customer...

CAST FILM LINES CAST FILM LINES WINDER W1200 The winder W1200 is the thin film turret winder for large widths of up to 5.2m and maximum roll diameters of 1,200mm. An ultra lightweight dancer-roll controls the film tension, while the shaft is center-driven and the film is wound onto the roll in either a gap or contact mode. Film cross cutting is performed by a twisting knife and as the film is fixed onto the new winding core by means of electrostatic charging, no core preparation is necessary. During indexing, the incoming film is attached to the surface of the finishing roll by an auxiliary contact...

CAST FILM LINES CAST FILM LINES 23 Another feature of the winder W5000 is the possibility of installing an additional cutting unit, which then provides the ability for winding in both directions. If 3-inch shafts are used on a large width, a centre support with adjustable positioning can be installed. Inline-slitting can be carried out without bleed trim and, depending on the product, slitting stations with razorblades or with circular knives are integrated at the winder entrance. The complete roll handling process is fully integrated into the automatic mode of the winder. THE MAIN FEATURES OF...

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rusionCAST FILM LINES EXTRUSION LINES - ENGINEERED TO PERFORM ► SML - Head Office Bundesstrasse 1a A-4860 Lenzing, Austria Phone: +43-7672-912-0 Fax: +43-7672-912-9 E-mail: [email protected] www.sml.at SML - Machinery Far East Sdn Bhd (1029958-P) 1201 Block B, Menara Amcorp No.18 Jalan Persiaran Barat 46050 Petaling Jaya Selangor Darul Ehsan, Selangor, Malaysia Phone: +60-3-7955-9098 Fax: +60-3-7955-9981 E-mail: [email protected] SML - Beijing Office Unit 1410, Landmark Tower No. 8 North Dongsanhuan Road Chaoyang District 100004 Beijing, P.R. of China Phone: +86-10-6590-0946 Fax: +86-10-6590-0949...