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Deinking is the industrial process of removing printing ink from paperfibers of recycled paper to make deinked pulp. The key in the deinking process is the ability to detach ink from the fibers. This is achieved by a combination of mechanical action and chemical means.
Older ink erasers are therefore small knives designed to scrape off the top few microns of a sheet of paper, removing the ink that had penetrated. In concert with bladed ink erasers, an eraser similar to those at the end of pencils was also used, with additional abrasives, such as sand, mixed into the rubber.
In philately, chalky paper is a type of paper coated with a chalky solution for security purposes. [1] The postmark cannot be removed without damaging the surface of the stamp [2] thus discouraging erasure of cancellations and fraudulent reuse of stamps. The paper was first coated with a chalk-like powder, and the ink for the stamp was then ...
The post How to Remove Ink Stains from Clothes appeared first on Reader's Digest. ... designed to remove oil and grease without being harmful to the hands or in this case fabric,” Peters reveals ...
Pink erasers Using an eraser. An eraser (also known as a rubber in some Commonwealth countries, including South Africa [1] [2] [3] from which the material first used got its name) is an article of stationery that is used for removing marks from paper or skin (e.g. parchment or vellum).
Aside from foxing, other types of age-related paper deterioration include destruction of the lignin by sunlight and absorbed atmospheric pollution, typically causing the paper to become brown and crumble at the edges, and acid-related damage to cheap paper such as newsprint, which manufacturers make without neutralizing acidic contaminants. [7]
Blotting paper is a highly absorbent type of paper used to absorb ink or oil from writing material, particularly when quills or fountain pens were popular. It could also be used in testing how much oil is present in products. Blotting paper referred to as bibulous paper is mainly used in microscopy to remove excess liquids from the slide before ...
Oxalic acid is used widely as an acid rinse in the laundry industry due to its ability to remove rust and ink stains. Oxalic acid converts insoluble iron compounds into a soluble complex ion. It is because of this property that oxalic acid is one of the primary components in commercial solutions used to remove scale from automobile radiators. [5]
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