Process for selecting, using and producing cotton straw composite board raw materials

A technology of cotton stalks and composite boards, which is applied in the direction of wood processing equipment, pretreatment and application of molding materials, etc., can solve the problems of limited strength and non-environmental protection, and achieve the effects of improving the strength of boards, simplifying the process flow, and reducing manufacturing costs

Inactive Publication Date: 2009-11-11
刘金忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its products have limited streng...

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  • Process for selecting, using and producing cotton straw composite board raw materials

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Embodiment 1

[0016] Firstly, the raw materials are dehydrated, dried or air-dried, and the water content is less than 3%, and then the cotton stalks are crushed to make them into 1-5mm granules. Then the reeds, corn stalks, and sorghum stalks are split into two halves with self-made equipment, peeled and pulped, and then put into a double-roller machine for rolling and grinding to remove the wax on the surface of the stalks. The wax removal method can also use chemical methods, that is, use acid or gangue to dilute one of them with water to a content between 15-20%, put it in a special pool, and then cut off the reeds, corn stalks, The sorghum stalks are immersed in the pool for 1-4 hours, then taken out and sent to the double-roll machine for deacidification and gangue removal, and then put into the clean water pool for 1-2 hours, and then sent to the double-roll machine for dehydration. Then dry or air-dry to make the water content <3%. Then enter the glue mixing process, that is, pour ...

Embodiment 2

[0018] The raw materials are dried or air-dried, and the moisture content is less than 3% to ensure that the board does not foam. Cotton stalks are crushed, reeds, corn stalks, and sorghum stalks are dewaxed, bamboo strips are broken, and then cut to length, sizing, stirring, and surface Brush or spray glue layer by layer, and then carry out plastic paving. First, lay the surface layer that has been cut and glued on the formwork, and then lay the first layer of blanks, with a layer thickness of 5-10mm. Then lay reeds or corn stalks or sorghum stalks or bamboo strips with reinforcing ribs. The reinforcing ribs should be arranged in a criss-cross pattern. Lay a layer of blanks and lay a layer of reinforcing ribs. Lay five layers and finally lay 90 grams of corrugated paper, and then lay the formwork. Enter press, press 10 sheets at a time, be pressed into 16mm thick sheet, pressure 600 tons, temperature 180 ℃, time 18 minutes, other technological conditions are the same as exampl...

Embodiment 3

[0020] Use 0.8mm thick wooden flakes (the round wood is cut according to the specifications and processed on the rotary cutting machine) as the upper and lower veneers of the board, and hot-pressed with the blank at one time to produce cotton straw composite boards, cotton straw crushed products and desiccated materials. Reeds cut to length, corn stalks, sorghum stalks or bamboo strips processed by wax must be dehydrated so that the water content is less than 3%. After surface layer cutting, gluing, mixing, paving and shaping, etc., firstly, the wooden sheet cut into 2440×1220mm in length and width is glued and laid on the formwork, and then the first layer of blanks is laid, with a layer thickness of 5-10mm and then laid. Reinforcing ribs, sorghum rods, and reinforcing ribs are laid in a criss-cross arrangement, one layer of blanks and one layer of reinforcing ribs, and 17 layers are laid repeatedly. A 20mm thick plate is pressed, 5 pieces are pressed each time, the pressure ...

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Abstract

The invention relates to a process for selecting, using and producing cotton straw composite board raw materials, belonging to the production industry of non-wood boards. The process takes cotton straws as main materials, uses reed canes, cornstalks, sorghum straws and bamboos as reinforcing ribs to produce non-wood boards instead of woods. The process is a method for selecting, using and producing raw materials aiming at various defects in the production process of non-wood boards; laid papers or wood thin slices are adopted as veneers aiming at the traditional process of secondary veneering; the veneers and blanks are formed by once heat pressing so that the process flows are simplified; reed canes after wax removal, cornstalks, sorghum straws and bamboo strips are arranged and paved in the blanks as the reinforcing ribs in a staggered form aiming at the defect that the strength of the non-wood boards is lower, thereby the strength of the boards is improved; the cotton straws are adopted as main materials aiming at the characteristics that straws of other plants contain less wood fiber and the cotton straws contain more wood fiber, thus waste is changed into valuable, and the cost of the raw materials is reduced; the waxiness on the surfaces of the straws is removed by a mechanical or chemical method, and the requirement for using common gel is achieved, thereby the manufacturing cost of the boards is reduced, and specific practices are narrated in detail in a specification.

Description

technical field [0001] The raw material selection and production process of the cotton straw composite plate of the present invention relate to the non-wooden plate production industry. It is a raw material selection and production process that uses cotton stalks as raw materials, reeds, corn stalks, sorghum stalks, and bamboo as reinforcements instead of wood to produce non-wooden boards. Background technique [0002] In recent years, the process of using straw as the main raw material to produce boards has been continuously introduced. But there seem to be many flaws. Straw composite plate and its manufacturing method (CN1294094) It uses one of rice straw, rice husk and straw as the main raw material, together with light-burned powder and modifier, is stirred and injected into the mold, added with glass fiber, dried and demoulded, and solidified and other processes to manufacture panels. Although the boards produced by this process can replace wood boards, there are cer...

Claims

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Application Information

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IPC IPC(8): B27N3/02B27N1/00B27N1/02B27N3/08B27N3/10B27N3/14B27N3/18
Inventor 刘金忠
Owner 刘金忠
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