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A technology of cement fiber board and manufacturing method, which is applied in the directions of manufacturing tools, auxiliary molding equipment, supplying devices, etc., can solve the problems of unobtainable results and deterioration of product surface quality, etc.
Inactive Publication Date: 2003-12-03
库宝达松下电工外部设备株式会社
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In addition, when the raw material mixed with foreign matter passes through the discharge port for setting thickness, fine foreign matter hangs on the discharge port, which leads to deterioration of the surface quality of the product, and as a result, a product with a good set thickness cannot be obtained.
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Embodiment 1
[0027] In the material blending process, 5% of pulp (NBKP), 50% of cement (OPC) and 45% of slag powder are dispersed in water to form a 25% (solid weight / total weight) raw meal. In the foreign matter removal step 3, the slit-shaped vibrating screen device 11a ( figure 2 ). At this time, the opening interval P of the slit was 7 mm, and two vibrators 2c (150w, 60Hz) were used. Put the raw meal that has passed through the vibrating screen device 11a into the gap holes H above and below the discharge port 7b. 1 10mm (left and right opening width H 2 About 1000mm) setting thickness device 7 ( image 3 ), the raw material discharged from the discharge port 7b is supplied on the water-permeable thin plate 1, and then, the leveling process 5 is performed into a plate shape. In leveling process 5, use Figure 4 Vibration leveler 2a shown (vibration machine 2c: 150w, 60H, extrusion force: 12kg). In addition, the vibrating smooth forming press plate 2b is inclined so that the inci...
Embodiment 2
[0031] In above-mentioned embodiment 1, the concentration of raw meal is 40% or 60%.
Embodiment 3
[0033] In above-mentioned embodiment 1, in raw material and vibrating leveler 2a ( Figure 5 ) is provided with a freely rotating annular thin plate 6. As the annular thin plate 6, an annular processed product of a plastic net is used. As the annular thin plate 6, a product having a mesh thickness of 1.1 mm and a flat-woven opening interval of 1.44 mm was used.
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Abstract
A method for manufacturing cement fiber sheets is by supplying slurry primarily including fibers and cement as main material components onto a permeable sheet, and suctioning and dewatering the slurry. The manufacturing method includes a foreign matter removing operation for removing foreign matter in the slurry material before supplying it to the permeable sheet, a thickness control operation for bringing the slurry to a specified thickness after the foreign matter removing process, and a leveling operation for smoothing the slurry surface after the thickness control process. Thus, treatment for foreign matter contained in slurry as well as thickness control, is throughly carried out, so that the product surface quality is ensured.
Description
technical field [0001] The invention relates to a method for manufacturing cement fiberboard. In detail, it relates to the manufacture of cement fiber boards for, for example, exterior decorative building materials (exterior walls, tiles, etc.), exterior products (walls, doors, etc.), and interior decorative building materials (floors, walls, ceilings, etc.). technology. Background technique [0002] People know, when making this fiber cement board, make the raw material that is made of materials such as fiber and cement be discharged from the discharge outlet that thickness is used to supply water-permeable thin plate, the method for making fiber cement board through decompression dehydration. [0003] However, inside the raw meal, for example, foreign matter accumulated from blending equipment, mixing equipment, piping, pumps, etc., and falling objects are often mixed in. And when such foreign matter is mixed, the foreign matter will directly affect the appearance of the...
Claims
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