High-strength packaging board of kenaf and sorghum straw mixed fiber and preparation method thereof

Patent name: Hongma, sorghum straw mixed fiber high-strength packaging paperboard and its preparation method Patent applicant Liu Haibo Principal applicant Address 123000 Inventor of Fuxin National Paper Products Factory, Fuxin, Liaoning Province Inventor Liu Ning; Wang Qiuling; Luo Yao Application (patent) No. 200410021176.1 Application date 2004.02.20 Certification date Approval announcement number 1560359 Approval announcement date 2005.01.05 Manual CD No. D0501 Main classification number D21H11/12 Classification No. D21H11/12 Division Original application No. Priority Abstracts This invention is a packaging board, in particular The invention relates to a kenaf and sorghum straw mixed fiber high-strength packaging paperboard and a preparation method thereof. The following raw materials and ratios thereof (by weight) are used: 1 part of total stalk kenaf, 1 part of sorghum straw, and 0.3-0.4 parts of ammonium sulfite , 0.03 parts of magnesium oxide, liquid ratio of 1:2.5 to 3, balance of water, the whole stalk Kenaf and sorghum stalks were cut into small pieces of 20mm with a rake, and water was added to the pre-dip to fill the steam ball or evaporator. Medium and small deflation, to achieve the maximum canning capacity, access to normal production using 0.4Mpa ~ 0.5Mpa pressure steam cooking, temperature 160 ~ 170 °C, cooking and holding time is 2～2.5h, after depressurizing and releasing air pressure, pour into the pool under the ball, perform three-cycle washing, sieve grinding, papermaking, the strength of the paperboard is greatly increased, the cost is low, a large amount of wood can be saved, and the greening and environmental protection are favorable. polluted environment. Sovereignty item 1, a Kenaf, sorghum straw mixed fiber high-strength packaging paperboard and a preparation method thereof, the following raw materials and their ratios (weight meter): 1 part of whole kenaf, 1 part of sorghum straw, 0.3% of ammonium sulfite 0.40.4 parts, 0.03 parts of magnesium oxide, liquid ratio of 1:2.5 to 3, and the balance of water, the whole stalk Kenaf and sorghum stalks were cut into small pieces of 20 mm with a rake, and the water pre-dip was used to refill the steam balls. In the evaporator, small deflation, to achieve the maximum loading capacity, access to the normal production with 0.4Mpa ~ 0.5Mpa pressure cooking, temperature 160 ~ 170 °C, cooking and holding time is 2 ~ 2.5h, vacuum release After the air pressure, pour into the pool under the ball, perform three-cycle washing, sieve grinding, papermaking.