Some advantages of wood-based single-layer hot press
The thickness of the particleboard pressed by the single-layer hot press is fine and the density of the plate is evenly distributed. The thickness of the multi-layer hot press is unbiased in the hot plate. During the working process, the thickness of the plate is easy to bond with the wood chips. Affecting the thickness tolerance of the plate, the density distribution of the finished plate is uneven by sanding with a sander. In addition, the thickness gauge on the hot press plate of the multi-layer laminating machine is subjected to a large pressure at the end of the forming of the plate, especially in the case where the thickness of the paving slab is uneven, the force is greater, and the hot plate is deformed, and the pressed product is pressed. It is also deformed and shaped into an arc shape. If the thickness tolerance of the finished board is to be ensured, the amount of sanding is also increased. In addition, the plain board which is uneven in the density of the finished board is subjected to secondary veneer processing, which may cause internal stress in the board. Eventually, peeling occurs. Therefore, the quality of the multi-lamination machine is generally lower than that of the single laminating machine, and the price is only about half or two-thirds of the price of the single laminating machine. The price of the single laminating machine is close to the selling price of the medium density fiberboard product of the same thickness;
The edge loss of the multi-layer hot press is larger than that of the single-layer hot press, and the material utilization rate is low. Because each multi-layer hot press machine needs to cut four sides, and the single laminating machine only cuts the whole large and four sides, generally with the output of the annual production of 50,000 cubic meters of production line, the multi-layer machine's trimming loss is single 3.5 times the laminating machine;
The multi-layer hot press has a large opening, a long closing time and a long auxiliary time, and the board is closed in the middle of the hot plate for a long time, resulting in a thick pre-solidified layer and a large amount of sanding; and the single laminator has a small opening and a short auxiliary time. The pre-cured layer is thin and the amount of sanding is small. In terms of 16 mm thickness, the amount of sanding is only one third of that of a multi-layer laminator.
Single laminator control is simple to operate, the operator only needs to pay attention to a slab; if a slab is not properly operated, it will inevitably affect the work cycle or produce waste. Coupled with the automatic detection of the single laminator, it is easy to meet the automated production under unmanned control;
The hot press has a low failure rate, no long device life, and low maintenance cost;
The products produced by the single laminating machine are large-format specifications, which can be cut into non-standard size and different specifications according to the needs of users, to meet the needs of users in many aspects; and the multi-lamination machine product has a single specification;
The slab of the single laminating machine is laid on the metal mesh belt, the transportation distance is short, and the pre-pressing machine is not used, and the slab and the mesh belt directly enter the hot press, and the symmetry of the thickness of the paving slab is not easily broken, and the finished product is finished. The plate is invariant; while the multi-lamination machine has a long transport distance, it is necessary to switch a plurality of transport machines and perform hot press machine loading, etc., the slab multi-layer is twisted and pulled, and the symmetry of the thickness of the slab is paved, which is easy to cause The finished board is warped and deformed due to poor symmetry of thickness;
Because the single laminator has a large format, it has a large area, but because the pre-pressing machine and some transporters and loaders are not required, the length of the entire paving is relatively small.
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