With the use of wooden door products indoors, paint pollution of various wooden door products has also been brought into the home life. Due to the fear of formaldehyde, consumers can't help but look at the "zero formaldehyde" wood door "zero formaldehyde" furniture. Is there a “zero formaldehyde†wooden door? The industry insiders said that “zero formaldehyde†is actually a gimmick. According to the current manufacturing process, it is impossible to realize “zero formaldehyde†in the wooden door, so how to reduce the wooden door product during daily decoration and use. What is the amount of formaldehyde released?
Formaldehyde in wood products:
At present, there are almost no research papers on the quantitative nature of formaldehyde hazard in the wood research system. The test methods for formaldehyde content are various, and there is no uniformity. Collecting these materials can publish papers; our national standards refer to Japan and European, referred to as E1 and E2. It can only be said that E1 is better than E2, but it is much better, and it has no effect on the degree of health. Moreover, the testing process is complicated, and the results of different people's tests are biased. The current testing methods are not perfect. E0 is basically a concept hype, flickering people. So if it is sensitive to the formaldehyde problem, the best solution is to not use wood-based panels made of urea-formaldehyde glue.
There is a disconnection between the wood product supervision system. The control of woody formaldehyde is basically based on sampling and sample delivery. Sampling, once a year, the factory will say hello, national conditions, do a good job, prepare a 'sample', send samples? Needless to say, it is no problem to treat the sample and then send it to the sample test; it is a system problem, even if you drink some milk, you can do it, not to mention ordinary wood products. Therefore, the general test report can not guarantee the formaldehyde problem of wood products (the test report will indicate that it is responsible for the "sample"), similar to a diploma, the actual amount of material is not easy to say, can only show that this company is still a bit Strength. Of course, this thing can still be used as a basis for a lawsuit.
The formaldehyde in the wooden door is distinguished from the material and structure, and the wooden door is divided into a wooden door and a composite door. In terms of formaldehyde, the composite door is much larger than the original wooden door.
For the original wood door, there are pure wood doors: all parts are made of a single wood board, without adhesive compounding (may use urea-formaldehyde glue), the parts are connected by gutter structure (such as with adhesive reinforcement, there is no error Use urea-formaldehyde glue, apply puzzle glue).
Composite wood door: Adhesive bonding between the parts themselves and or parts (possibly with urea-formaldehyde glue).
Therefore, although the original wooden doors use natural raw wood, it is difficult to avoid the use of adhesives, and it is difficult to buy pure original wooden doors on the market, but the problem of formaldehyde is relatively easy to control.
For the demand of luxury, you can customize the pure wood door, reduce the chance of using chemical adhesives, such as glued with glue, requires the use of glue. (Special reminder to the manufacturer, write the order, the factory will also make low-level mistakes, urea-formaldehyde glue has liquid, solid form, hot pressing, cold pressing process, different brands)
For the composite door, it is complicated. Because of the invention of urea-formaldehyde glue, it has designed and produced all kinds of wooden wood-based panels (MDF, plywood, particleboard), and there is a composite door. Therefore, formaldehyde has penetrated into the composite door. Inside the bones, the inevitable existence is only more or less.
Moreover, it is possible to use urea-formaldehyde glue in the composite door assembly process and the skinning process, so formaldehyde control is difficult.
In terms of the lethality of formaldehyde, MDF > particle board > plywood
Choose composite doors made of plywood and natural wood, and pay special attention to the material of the door frame and door line is also plywood and natural wood. Write this to the order contract!
1) To see the cross-section sample provided by the seller in the store, look at the door page and the door frame, and see the section to know which materials to use.
2) After the wooden door is delivered to the home, be sure to check it before installation, lock the hole, and assemble the hinge. You can see the internal structure of the door page. If you click on the bottom side of the door, you can see if the plywood is used. . The door frame can be seen from the cut surface. If not, claim again from the merchant.
For mass demand, retail is about 1500 wooden doors. Unfortunately, most of the composite doors on the market are made of MDF and particleboard. E is hard to say, but as mentioned before, formaldehyde is limited and healthy. The impact is basically ignored, and life itself is a process of risk. Formaldehyde is actually ubiquitous. Any product containing chemical principles, such as clothes, fabrics, export-oriented enterprises, or even take clothes outside to be exposed before they dare to export.
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