Last updated: August 2026
GORTEF supplies PTFE platen cover sheet and separator sheet to fit the Martin Group Open Top, made to the dimensions you measure off your own machine. It is an aftermarket replacement rather than a genuine Martin Group Srl part.
The Open Top is the machine Martin Group name, with the X series, as their continuous working model, but continuous here means the two working planes alternate so the operator never waits, not that a belt runs through it. The heated head lifts clear over flat planes, so the consumable is non-adhesive PTFE sheet as a release face rather than an endless belt, and with two planes in use a changeover is two sheets.

Which GORTEF Product Fits the Martin Group Open Top?
Confirming the Exact Specification
We are still finalising the published dimensions for this model. Send us the dimensions of the sheet you are removing, or a photo of it alongside its packaging, and we will confirm the construction before you order. Measure the plate you are facing rather than the old sheet, which will have been trimmed to fit and may have shrunk back at the edges.
How to Order Sheet for the Martin Group Open Top
Tell us the thickness you need and the size of the area you are covering. PTFE sheet comes 1000mm wide and is cut to any length between 1 and 30 metres.
Say whether you need it self-adhesive or plain, because a plate being refaced and a release sheet that is lifted out between cycles take different grades.
Check You Have the Right Machine
Model designations vary between regions and production years. To confirm the Martin Group Open Top is the machine you are servicing, check the manufacturer's own listing:
Martin Group Open Top on the manufacturer's siteMartin Group and Open Top are trademarks or model designations of Martin Group Srl. GORTEF is not affiliated with, endorsed by or sponsored by Martin Group Srl. All names and part numbers are used for identification and cross-reference only, and every GORTEF product described here is an aftermarket replacement product rather than a genuine manufacturer part.