Composite board and manufacturing method thereof
A technology for composite boards and manufacturing methods, which can be applied to flat products, manufacturing tools, and other household appliances, etc., can solve the problems of lack of particle board wood raw materials, etc., and achieve the effect of structural strength, safety, environmental protection, and high structural strength
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Embodiment 1
[0091] 1. Preparation of raw materials: collect the tea stalks. After the tea stalks are collected, spray water first. After spraying water, the moisture content of the tea stalk materials is divided into 20% to 30%. After crushing and drying, the ideal material shape and moisture content are achieved. This method can fully bond the broken tea stems and reduce the generation of voids, so as to achieve the effect of smooth and compact surface in later processing.
[0092] 2. Material molding preparation: put the material into a mixer and mix it with isocyanate glue as a binder. The density of the material is 0.9g / cm3, the sizing amount of the isocyanate adhesive is 5%, and it is put into the mold after stirring.
[0093] 3. The layered paving method is adopted in the paving process, which is divided into the upper and lower surface layers and the middle layer, and the tea stems of different crushed materials are used for paving. Layers are used only once after powdering. The...
Embodiment 2
[0098] The difference from Example 1 is that the collected tea stalks were divided into two groups and sprayed with water, and the moisture content of the tea stalks in the two groups were controlled at 20% and 30% respectively after water spraying. Then two groups of tea stalks are pulverized in a grinder, the tea stalks with 20% water content are pulverized once and taken out for drying, and the tea stalks with 30% water content are pulverized twice and then dried.
[0099] The water content of the two groups of tea stems is controlled at about 5-8% and then the two groups of tea stems are screened. The tea stems of the first group are crushed once and passed through a 10-mesh sieve, and the tea stems of the second group are crushed twice. 60 mesh sieve. After sifting out the fine fragments, take the tea stem fragments on the sieve for later use. Put the two groups of tea stalk scraps into the rubber mixing machine and mix them respectively. Add 5% isocyanate glue to the fi...
Embodiment 3
[0101] The difference from the above example is that multiple boards are glued together again to form a thicker composite board: after the hot-pressed material is placed and cooled, the edges are aligned, and the surface is polished with a 120-mesh sander and the dust on the surface is wiped off Then use finger glue to coat the surface of the material, and the coating amount is 150g / square meter. Put the material coated with finger joint glue together up and down, and put it into the pre-pressing machine with a pressure of 2Mpa to 2.3Mpa for 12 to 16 hours to fully bond the upper and lower layers of the material. Take out the bonded materials and polish the gaps at the boundaries until there are no obvious gaps, and then pack them into the warehouse.
[0102] The present invention utilizes the remaining tea stalks produced during tea picking and processing as raw materials by means of the same process of man-made board processing, and adjusts the material form and raw material...
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Abstract
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