Formaldehyde distribution are: 1, the wood itself under the action of temperature and humidity emit a trace amount of formaldehyde. 2, urea formaldehyde resin in the glue process inevitably part of the free formaldehyde emission. 3, wood-based panels in the curing process,part of the linear resin does not form a network structure and thus break down into free-form formaldehyde to the outside world. 4, partially cured incomplete resin under the action of heat and moisture decomposition and the formation of free formaldehyde emission.
June 27 on a long Jiusheng solid wood flooring a report, cited great repercussions, the reporter also visited the long-Sheng floor manufacturers, manufacturers answer: Jiu-sheng floor, raw materials, all fine selection of fine natural wood planks, the grade must reach Class A,
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