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Cheap sandpaper was often passed off as glass paper; Stalker and Parker cautioned against it in A Treatise of Japaning and Varnishing published in 1688. [5] In 1921, 3M invented a sandpaper with silicon carbide grit and a waterproof adhesive and backing, known as Wet and dry. This allowed use with water, which would serve as a lubricant to ...
In 2008, 3M created the Renewable Energy Division within 3M's Industrial and Transportation Business to focus on Energy Generation and Energy Management. [ 87 ] [ 88 ] In late 2010, the state of Minnesota sued 3M for $5 billion in punitive damages, claiming they released PFCs —classified a toxic chemical by the EPA—into local waterways. [ 89 ]
Given the recent merge, in which it was decided that sandpaper is the COMMONNAME for a coated abrasive, it now seems sensible to merge two other stubs to this page: Crocus cloth (a type of coated abrasive used in jewelry-making) and Emery paper (a type of sandpaper with a particular abrasive).
To improve the wet strength it is common to use chemicals. The use of chemicals can retain as much as 10% to 30% of the original dry strength of the paper. [1] The wet strength chemicals may improve the dry strength of the paper as well. A Japanese research team found that the effect of humidity on cardboard differs depending on how it is ...
One of the original pioneers of the wet abrasive process in late 1940s was Norman Ives Ashworth who found the advantages of using a wet process as a strong alternative to dry blasting. The process is available in all conventional formats including hand cabinets, walk-in booths, automated production machinery and total loss portable blasting units.
LONDON/SINGAPORE (Reuters) -European shares ticked up on Thursday after falling the previous day, while Asian stocks slipped, as trading volumes thinned ahead of the U.S. Thanksgiving holiday.