The single facer has been in use since the 1960s when the cardboard production industry was still in the manual stage. The design of the single facer at the time featured an angled roll arrangement with the pressure roll on top. This arrangement stems from the use of "guide jaws".

During the gluing process of the single facer, the guide claws help the formed corrugated core paper to get close to the middle roll (upper corrugating roll). The height of the bridge is kept relatively low to facilitate manual feeding of the wet end. By the 1980s, most companies began to use single-sided machines with vertically arranged rollers, most of which placed pressure rollers on top.
Due to the high energy consumption and low technical threshold of the single facer of s, the single-sided machine is only a supplement to the corrugated paper production line-the single-sided machine is used in the processing and production of some small-sized, low-grade, domestic cartons.
In the future, with the gradual promotion of green printing, the single facer with low energy and high consumption will surely withdraw from the stage of history.
Through the above introduction and analysis of single facer, hope it helps you.