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Roll slitting. Roll slitting is a shearing operation that cuts a large roll of material into narrower rolls. There are two types of slitting: log slitting and rewind slitting. In log slitting the roll of material is treated as a whole (the 'log') and one or more slices are taken from it without an unrolling/re-reeling process.
Calender process Calender at end of paper machine Old calender machine Threading paper through calender rolls, 1941 Calender machine for electrode pressing in Lithium-ion battery manufacturing. A calender is a series of hard pressure rollers used to finish or smooth a sheet of material such as paper, textiles, rubber, or plastics.
The Original Heidelberg Platen Press was introduced in 1914 [3][2] and manufactured between 1923 and 1985. [4][5] Although the Original Heidelberg Platen Press is no longer being manufactured, it is still in wide use for commercial and enthusiast letterpress printing. [6][7] The company later also produced the Original Heidelberg Cylinder Press ...
The paper is fed to the drum, and the ink only comes through the master material where there are holes. A pressure roller presses the paper to the drum and transfers the ink to the paper to form the image. The paper then exits the machine into an exit tray. The ink is still wet.
A mimeograph machine (often abbreviated to mimeo, sometimes called a stencil duplicator or stencil machine) was a low-cost duplicating machine that worked by forcing ink through a stencil onto paper. [1] The process was called mimeography, and a copy made by the process was a mimeograph. Mimeographs, along with spirit duplicators and ...
Lewis Paul was of Huguenot descent. His father was physician to Lord Shaftesbury.He may have begun work on designing a spinning machine for cotton as early as 1729, but probably did not make practical progress until after 1732 when he met John Wyatt, a carpenter then working in Birmingham for a gun barrel forger.
Cant hook. A cant hook or pike or a hooked pike is a traditional logging tool consisting of a wooden lever handle with a movable metal hook called a dog at one end, used for handling and turning logs and cants, especially in sawmills. A cant dog has a blunt end, or possibly small teeth for friction. A peavey or peavey hook is similar but has a ...
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