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How serious is the hazard of formaldehyde produced by plywood

by:Qin Ge Ceramic & Building     2021-03-07
For Wood panel products, there is a saying 'Don't be afraid of fakes and be afraid of formaldehyde' is not an exaggeration at all. Let me briefly introduce what formaldehyde is:


Formaldehyde (HCHO), also known as formic aldehyde, is a colorless gas with a pungent and pungent odor. The gas has a density of 1.067 kg/m3 and is easily soluble in water and ethanol. It is a gaseous state at room temperature, usually in the form of an aqueous solution. It is a very strong bactericide with antiseptic, sterilizing and stabilizing effects. The 35-40% formaldehyde aqueous solution is commonly known as 'formalin'. Determined by the World Health Organization as carcinogenic and teratogenic substances.


It can be seen that formaldehyde is very harmful to the human body. Qin Ge summarized from the following two points how the wood panel product produces formaldehyde during the production process and what is the impact on the human body:


The cause of formaldehyde in wood panel products


(1) When the wood itself is dry, formaldehyde is generated due to internal decomposition. The lower the wood density, the stronger the formaldehyde emission ability.


(2) The glue used for the bonding of the board substrate is one of the main reasons for the generation of formaldehyde. At present, the main glues on the market are urea-formaldehyde glue and melamine glue. The production process of urea-formaldehyde glue is simple and does not require high equipment. Most of them are produced by many small workshops. However, the amount of formaldehyde released is large, but because of its low price , Mainly used by wood board, medium and low-density fiberboard, which use a large amount of glue when the substrate is bonded, and the tri-hydrogen ammonia glue is a new type of environmentally friendly glue, and its production process and equipment requirements are relatively high. The content is lower, but the price is much more expensive than urea-formaldehyde glue, and it is generally used for high-end sheets.





The impact of formaldehyde on human health


Mainly manifested in abnormal sense of smell, irritation, allergies, abnormal lung function, abnormal liver function and abnormal immune function. When its concentration reaches 0.06-0.07 mg/m3 per cubic meter of air, children will have mild asthma. When the indoor air content of formaldehyde is 0.1 mg/m3, there will be peculiar smell and discomfort; when it reaches 0.5 mg/m3, it can irritate the eyes and cause tearing; when it reaches 0.6 mg/m3, it can cause throat discomfort or pain. When the concentration is higher, it can cause nausea and vomiting, cough, chest tightness, wheezing and even pulmonary edema; when it reaches 30 mg/m3, it will cause immediate death.


In fact, in the production process of Wood panel products, the production of formaldehyde is inevitable. However, because small workshops or small production lines still choose urea-formaldehyde glue as the adhesive glue in the face of interest, in the spirit of environmental protection, it is more important to choose Wood panel product produced by the factory.


Qin Ge has been focusing on the production of wood-based panels for 20 years. As a manufacturer of environmentally friendly panels, Qin Ge has extremely strict product requirements. Welcome to consult!
Shanghai Qin Ge Ceramic & Building Co., Ltd. guarantees to providing quality products and services.
If you would like to learn more about , be sure to visit Qin Ge Ceramic & Building for more information!
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