Roche Sample Mesh

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Samples of grids produced on Expanded Metal Systems

The samples show the evolution of the systems over the past years from the original 2 tooth Expander to today's 5 tooth Expander

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Expanded Grid produced on a Roche Expander having 4 teeth which cut and 1 tooth which reforms the cut. This gives a more uniform grid pattern whereby all the holes are of a similar shape. Note the perpendicular node line, a feature of the Roche Process

Typical 5 tooth arrangement

Expanded Grid produced on a Roche Expander having 3 teeth which all cut. This gives a mesh pattern whereby the holes follow the sequence diamond, diamond ,square. The reason for this is the absence of the reform tooth. Again note the perpendicular node line

The above grid sample was not produced on a Roche Expander. It was produced on an Expander having 2 teeth which all cut. This gives a mesh pattern whereby the holes follow the sequence diamond, square, diamond. The reason for this is the absence of the reform tooth. Also note that the node line is not perpendicular because the strip advance is not synchronised with the expander press.