SML introduces new PET sheet system

By Bill Bregar
Senior Staff Reporter

Published: April 10, 2013 8:47 am ET

Related to this story

Topics Product News

SML Maschinengesellschaft mbH has introduced a sheet extrusion system for thermoforming, called FlexiPET.

FlexiPET allows the production of virgin PET, recycled PET bottle flake, PET film and sheet regrind and other polymers such as polystyrene, high impact polystyrene and polylactic acid.

The machine can process more than 2,200 pounds of PET an hour, at a maximum sheet width of 36 inches and line speeds of up to 230 feet per minute.

SML has opted for a conical twin-screw extruder design, which the company says incorporates advantages the advantages of both co-rotating twin-screw and conventional single-screw extruders. A high-volume feed section can handle even very low-density, recycled material.

Because conical extruders have a short design, melting takes place in the segment on front of the first barrel venting, so residual water has very little time to break down the PET molecule chains. And according to SML, the combination of that feature with a strong vacuum and a second venting section means the PET suffers only a minimal loss of intrinsic viscosity.

The conical design of the screws results in a low-volume pressure section, so the pressure generated is more like that of a single screw than a parallel twin screw, and you can feed the melt directly into a back-flush filter.

The new line is equipped with a new winder combining the advantages of cantilever and shafts, winder carriages and friction winding.

SML is based in Lenzing, Austria.

Tel. 011 43 7672 912-0, email sml@sml.at.


Comments

SML introduces new PET sheet system

By Bill Bregar
Senior Staff Reporter

Published: April 10, 2013 8:47 am ET

Post Your Comments


Back to story


More stories

Extruder maker touts advantages of modular design

April 9, 2014 11:46 am ET

KraussMaffei Berstorff extends its line of compounding extruders with the cost-effective ModulPlus variety.    More

Profile extrusion system saves material and energy

April 9, 2014 11:39 am ET

Profile extrusion technology supplier Greiner Extrusion of Nussbach, Austria, has a new innovation: Its flow.control pro using GESS.tronic, which...    More

Structural foam retrofit includes sequential valve gating

April 9, 2014 11:21 am ET

Cincinnati Process Technologies did a controls retrofit project for a structural foam molding machine for Buckhorn Inc.’s factory in Bluffton,...    More

Software helps Schnipke speed up mold trials

April 9, 2014 11:20 am ET

Schnipke Engraving Co. of Ottoville, Ohio, has seen a major improvement in speed in its design-to-part process by using the Sigmasoft thermoplastic...    More

Mold with five-piece collapsing core makes cosmetic jars

April 9, 2014 11:18 am ET

StackTeck Systems Ltd. of Brampton, Ontario, has announced a new application for its five-piece collapsing core for high-volume jars: with a mold sold...    More

Market Reports

Thermoformed Packaging 2014 Market Review & Outlook North America

This in-depth report provides analysis and discussions of economic and political conditions, market trends, legislative/regulatory activity impacting supply and demand, business opportunities and threats, materials pricing, manufacturing technology, as well as strategies being implemented by thermoformed packaging companies. In addition, there are reviews of 25 leading thermoformers in the packaging segment, assessing their growth initiatives and performance metrics over 10 years.

Learn more

Automotive Market Review and Outlook 2014 The Americas

This 75-page report features in-depth analysis of the automotive industry for the Americas. It includes discussions of market trends, legislative/regulatory activity impacting production and threats as well as design strategies being implemented by the major automakers. Detailed charts and data tables outline North American automotive production over the last five years.

Learn more

Plastics Building & Construction Market Review and Outlook 2014 with MS Excel chart data

This report provides in-depth analysis of the plastic building and construction market for North America, including discussions of trends, opportunities, threats and the latest developments in construction trends that impact plastics processors.

Learn more

Upcoming Plastics News Events

May 6, 2014 - May 8, 2014Plastics in Medical Devices 2014

May 12, 2014 - May 12, 2014Plastics News Brazil Pharma Summit

September 10, 2014 - September 12, 2014Plastics Caps & Closures 2014

February 3, 2015 - February 7, 2015Plastics News Executive Forum 2015

More Events