Routing plate processing technique
A processing technology, engraving and milling technology, applied in the direction of wood processing equipment, manufacturing tools, thin wood chip manufacturing, etc., can solve the problems of unreasonable density distribution, high formaldehyde emission, low board strength, etc., to reduce pre-curing time, Stable mechanical properties and reduced formaldehyde emission
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[0010] Example 1:
[0011] A machining process for engraving and milling. The processing steps are: wood chipping and screening: cutting wood species with similar specific gravity into wood chips of uniform size; pre-cooking and cooking: pre-cooking the chipped wood chips with saturated steam Cook for 3 minutes, the pre-cooking temperature is 90°C, and then cook for 3 minutes, the cooking temperature is 165°C; fiber separation: the cooked wood chips are defibrated by a heat mill, and the obtained wood fiber has ≥36 meshes accounting for the total fiber weight 10% of ≤200 mesh, 5% of total fiber weight; Preparation of E1 grade urea-formaldehyde glue: After heating the formaldehyde in the container to 30°C, add 30% NaOH with a mass concentration of 30% to adjust the pH to 8.5; add the first batch of urea , The added amount is 35% of the mass of formaldehyde, after stirring until the temperature is balanced, measure the pH value of 8.3~8.5; heat to 65~83℃, during the period, measure ...
Example Embodiment
[0012] Example 2:
[0013]A machining process for engraving and milling. The processing steps are: wood chipping and screening: cutting wood species with similar specific gravity into wood chips of uniform size; pre-cooking and cooking: pre-cooking the chipped wood chips with saturated steam Cooking for 5 minutes, pre-cooking at 100°C, then cooking for 5 minutes, cooking temperature at 175°C; fiber separation: the cooked wood chips are defibrated by a heat mill, and the obtained wood fiber has ≥36 meshes accounting for the total fiber weight 20% of ≤200 mesh accounted for 10% of the total fiber weight; Preparation of E1 grade urea-formaldehyde glue: After heating the formaldehyde in the container to 35°C, adding 30% NaOH by mass concentration to adjust the pH to 8.8; adding the first batch of urea , The added amount is 35% of the mass of formaldehyde, after stirring until the temperature balances, measure the pH value of 8.5; heat to 65~83℃, during which the pH value is measured a...
Example Embodiment
[0014] Example 3:
[0015] A machining process for engraving and milling. The processing steps are: wood chipping and screening: cutting wood species with similar specific gravity into wood chips of uniform size; pre-cooking and cooking: pre-cooking the chipped wood chips with saturated steam Cook for 4 minutes, the pre-cooking temperature is 95°C, and then cook for 4 minutes, and the cooking temperature is 170°C; fiber separation: the cooked wood chips are defibrated by a heat mill, and the wood fiber obtained is ≥36 meshes accounting for the total fiber weight 15% of ≤200 mesh accounted for 8% of the total fiber weight; Preparation of E1 grade urea-formaldehyde glue: After heating the formaldehyde in the container to 33°C, add 30% NaOH by mass concentration to adjust the pH to 8.7; add the first batch of urea , The added amount is 35% of the mass of formaldehyde, after stirring until the temperature is balanced, measure the pH value of 8.4; heat to 65~83℃, during which the pH va...
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