In 2013, Reifenhäuser introduced the high-performance extrusion lines for PET thermoforming sheets with the patented mechatronic polishing stacks of the MIREX-MT-V design series. Now Reifenhäuser introduces the next generation of this line type. 

Reifenhäuser Combines Improved Components 

Industrie 4.0

Polyethylenterephthalat

Extrusionswerkzeuge

Extrusion

Flachfolien- und Plattenextrusion

Folien

Verpackungsmaterial

New Generation of PET Thermoforming Sheet Lines 

The trend towards customised extrusion lines is continuing. Machine manufacturers regard comprehensive customer service as the most important benefit they have to provide. 

Blasfolienextrusion

Platten

Sheet and Film Extrusion: Precision by the Metre 

Macchi presented at K the new Pod-Flex series for the production of seven-layer blown films with a net width of 2700 mm. The extrusion line can extrude laminate, barrier and biomaterials, since the new TES72 extrusion die, which is completely PVD-coated, can process both polyolefin and barrier-film formulations on the same line. 

Technical Advances in More Flexible Blow-Molding Lines  

Higher Speed for Material Exchange 

Like plastics manufacturing and processing, the recycling of plastic products requires specialization to be efficient. Accordingly, a Dutch company has dedicated itself entirely to the recycling of agricultural and packaging films ¿ and invested in a machine technology, which was found along tortuous ways. 

Technical Answers to World Political Changes in Film Recycling 

Kunststoff-Aufbereitung

Schmelzefilter

Sortierer

Kunststoff-Recycling

From Waste Collector to the  Plastic Recycler 

The Chinese global film supplier invests in two 7-m sequential film stretching lines for the production of BOPA films. 

Xiamen Changsu orders production line for BOPA film 

Kunststoffverarbeitung: Maschinen und Komponenten

Brückner delivers sequential film stretching lines 

The computer model for designing slit dies and spiral manifold dies taking into account the entire flow path has been successfully transferred to industrial use. This model allows determination of the melt distribution in the individual die designs as a function of the flow properties of the melts being processed. The effects of the regions connected to the manifold channel, such as restrictor bars, parallel guides or relaxation zones are also included in the analysis. 

Die Design for Pipe and Sheet Extrusion: Simulation Model Confirmed 

The production of plastic profiles and film is carried out with highly developed dies in which the geometries are coordinated precisely to the flow properties of the plastics. This coordination often requires long iteration loops in simulation and experiment. These loops represent a considerable cost and time factor, and threaten the prospects of manufacturing in high-wage countries.  

Additively manufactured demonstrator die (© IKV/Fröls) 

Excellence Clusters Studies Additively Manufactured Extrusion Dies 

Additive Fertigung

Werkzeug- und Formenbau

Technik Trend

kunststoffe-international.com

Fast Product Change in Extrusion  

Cracks often appear on screws and unsettle customers. The manufacturer EJS is often confronted with this effect and has got to the bottom of it. 

EJS Investigates Crack Behaviour 

Extrusions-Zubehör

The Danger of Cracks on Screws 

The trend towards reduced stockholding and the wish for immediate delivery of small quantities are increasing demand for flexible production solutions, and production batch sizes are therefore becoming smaller. This trend poses problems to raw materials and additives manufacturers, as well as plant manufacturers. 

Blasformen

Trend Report: Flexible Extrusion Technology 

A special rubber gasket is now available to seal the parting line between head and die. First pilot projects have shown several promising benefits. The technique is suited for pipe extrusion, film blow molding and extrusion blow molding. 

Rohr- und Profilextrusion

Extrusionsblasformen

Ring-shaped Dies: Tilting Technique Improves Centering and Other Features 

A machine manufacturer is expanding its wide program of cast and blown film lines with a system for water-quenched blown film extrusion. This provides a unique system portfolio for the production of flexible packaging. The article presents these extrusion processes, their specific characteristics and the resulting application areas. 

Kunststoff-Verpackungsmaschine

Medizintechnik

Film Production: System Options for Wafer-Thin Protection 

Water-cooling can achieve very high cooling rates for blown film extrusion. The result is soft, elastic films with near-amorphous molecular structures. The resulting low tendency to curl is a clear advantage when asymmetric multilayer film structures are processed further. 

Extrusion: New Packaging Solutions Thanks to Rapid Cooling 

In conventional extrusion blow molding, complex geometries result in severe fluctuations in wall thickness distribution. With the use of a novel die system, the wall thickness of the BIG Bobby Car trailer can be realized within narrow tolerances.  

Improving Quality and Reducing Weight with Uniform Wall Thicknesses 

Werkzeugköpfe

A Toy Challenges the Engineers  

MDO (machine direction orientation) can be used for the production of polymer films that have unique properties. By using an optimized machine and control technology, existing MDO applications can be produced much more efficiently and new areas opened up. 

Selective Modification of Film Properties through Uniaxial Stretching 

Stretching the Limits  

Stretch film producer Duo Plast AG, Lauterbach, Germany, introduces an extruded 8 micron stretch film that stands for a minimum film consumption and is available now under the brand name Duo XS. 

Also Stretch Films Can Be Thin 

Polyethylen

Stretch Film Duo XS 

Plastic films have become an important part of our daily lives – 50% of all plastic packaging is based on films. The fact that packaging represents one-third of plastics consumption in Germany underscores the exceptional importance of an everyday product. 

Henning Seidel | Sven Wenigmann | Andreas Tondorf | Torsten Schmitz 

PE_2006_10_Film-Extrusion-More-and-More-Layers.pdf

Ausgabenartikel

588005 Film Extrusion: More and More Layers

issue 07/2023

issue 06/2023

issue 05/2023

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