that glue strength is not good; lift a blockboard side of the board, Dian Dian, quality Of the blockboard should have a sense of overall, heavy feeling. Of course, this heavy feeling should be dry in the case of dry is a good board, otherwise it is dry enough. And then with the mouth of the device to knock the surface of the plate, listen to the sound is very different, if the sound has changed, indicating the existence of hollow inside the plate. These phenomena will weaken the overall bearing capacity of the plate, long-term uneven force will make the plate structure distortion, deformation, affect the appearance and use of results. As the big core board in the core board stitching and bonding with the panel when the general use of urea-formaldehyde glue, and we are currently said that the formaldehyde is actually from the plastic out of the. Therefore, the environmental protection of large core board and inferior main plate of the main difference in the glue on the good or bad. If the production of large core board is "
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