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Transverse Direction Orientation Systems

MARSHALL AND WILLIAMS PLASTICS

Marshall and Williams Plastics is a recognized global leader and innovator in plastics orientation and casting equipment. Marshall and Williams, founded in 1920, built tenter frame systems for the textile industry and was the first to adapt this technology to orient plastic film and sheet. Today, we continue to serve the plastics industry by setting new standards in TDO technology.

ADVANTAGES
* Heavy-duty, High Speed 
* SuperFlex Rail Hinge System
* 475 DJ Tenter Clips
* Split Drive End
* Custom-built to your width and length requirements

TDO TECHNOLOGY

Transverse direction orientation of plastic film and sheet is accomplished by heating the web and stretching it in the transverse (or cross) direction on a tenter frame. The tenter frame consists of two horizontal chain tracks, on which clip and chain assemblies ride. It is usually enclosed in a hot air oven. 

The oven typically has three heated zones; the preheat, stretch, and anneal sections. The clips grip each side of the web and convey it along the chain tracks through the oven. The angle of the tracks relative to each other is adjustable allowing the material to be stretched as it is conveyed. The overall machine is commonly called a Transverse Direction Orienter (TDO).

Our TDOs are built to process webs of various forms and materials over a wide range of thicknesses. These webs can be film, sheet, netting, or nonwovens and are commonly made from polypropylene, polystyrene, polyethylene, PVC, polyester, PLA, and other materials.