The shaving pattern is the decisive factor in the quality of the particle board, so first of all to produce qualified shavings. The shavings of the remainder of the wood processing can be used as a core layer for the particle board. Surface shavings are mainly processed by high-grade residues ( wood truncated, edged, etc. ) in harvesting or processing . The length, thickness and width of the shavings vary depending on the production method and the core layer or surface layer used for the production. The processing equipment for preparing shavings includes a chipper, a crusher, a sander and a fiber separator, and the cutting methods include cutting, cutting and crushing. In order to obtain high-quality shavings, it is necessary to undergo primary crushing, grinding, crushing and sieving.
Shavings produced by the processing, the initial moisture content of approximately 40% to 60%, in line with the requirements of the process the moisture content of 2 to 4% of the core layer, the surface layer is 5 to 9%. Therefore, the shavings with different initial moisture contents are dried by a dryer to achieve a uniform final moisture content. The dried shavings are then mixed with liquid glue and additives. Usually 8 to 12 grams of sizing is applied per square meter of surface area of ​​shavings . The compound is ejected from the nozzle to form particles of 8 to 35 microns in diameter , forming a very thin and uniform continuous layer of glue on the surface of the shavings. The sized rubber shavings are then laid into slabs, and the thickness is generally 10 to 20 times the thickness of the finished product . Preloading and hot pressing are possible. The pre-pressing pressure is 0.2 to 2 MPa and is carried out using a plate press or a roller press.
Tags: sheet, particle board, sheet agent, wood
Storage Basket,Fabric Storage Basket,Storage Woodchip Baskets,Basket Felt Magazine Storage Basket
Xinhui Mingcheng Hardware Mamufacture Limited of Jiangmen City , https://www.gd-jmmc.com