M
Machine Coated - paper or board, which is pigment coated at the end of the paper or board-making machine. Machine Direction - the direction of a sheet or web of paper corresponding with the direction of the flow of 'stuff' on the paper machine. Machine Glazed (MG) - paper which is dried on the papermaking machine by a very large cylinder with a polished surface. The paper has a smooth and a rough side. MG papers are used for wrapping papers and posters. Machine Stack - a set of steel rollers at the end of a paper machine between which the paper is passed to give it a smooth surface. Manila - originally paper made from pulp produced partly or entirely of manila hemp, but now mostly composed of softwood kraft pulp. Most commonly used for envelopes. Matt Paper - coated paper with a dull, smooth finish. Mechanical Pulp - pulp made by the grinding of steamed or boiled groundwood (without the addition of chemical agents). Melamine Formaldehyde Resin - a polymer produced by reacting melamine with formaldehyde; wet strengthening agent. Micrometer - an instrument for measuring small distances accurately, e.g. the thickness of paper. Microperf - very finely cut perforated edge, designed to simulate the effect of a guillotine cut edge. Middles - furnish layer of a board situated between the two external furnish layers or between an underliner and the back furnish layer. Mottled - a variegated effect produced by the mixture of differently dyed fibres or a drip of colour on the wet pulp. When deliberately produced can also be known as 'granite' or 'silurian' effect.
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