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Process for pretreating raw materials of sunflower stalk composite boards and pressing assemblies

A sunflower stalk and pretreatment technology, which is applied in the pretreatment of molding materials, manufacturing tools, reed/straw treatment, etc., can solve the problems of limited board strength, environmental protection, and low product strength, so as to improve strength and reduce production costs , The effect of reducing the process flow

Inactive Publication Date: 2011-01-12
刘金忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, the process of using straw as raw material to manufacture boards has been continuously introduced, but there seem to be many defects: straw composite board and its manufacturing process, (CN1294094) it uses one of straw, chaff, straw, etc. as the main material, together with Lightly burnt powder, improver, after stirring, injection molding, adding glass fiber, drying and demoulding, curing and other processes to make boards, although the boards produced by this process can replace wood boards, but due to the large use of chemical raw materials and glass fibers The product has some problems in terms of environmental protection. Secondly, the product is naturally cured and formed, and the strength of the plate is limited.
Strong board (CN12621717) first mixes magnesium oxide and magnesium silicate for 10-40 minutes, weaves bamboo, reed, corn stalk, palm leaves and other plant stems into a mesh, uses glass fiber cloth as the middle layer skeleton, and flattens it The product strength of natural molding is not high, and the product is not environmentally friendly

Method used

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  • Process for pretreating raw materials of sunflower stalk composite boards and pressing assemblies
  • Process for pretreating raw materials of sunflower stalk composite boards and pressing assemblies

Examples

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Effect test

Embodiment 1

[0016]First of all, sunflower stalks, sawdust, rice husks, peanut shells, bean stalks, hemp stalks, and cotton stalks should be dehydrated (natural drying and artificial drying) to make the water content <5%, and the sunflower stalks should be broken longitudinally from root to tip. , break it into two halves, three halves, four halves, and five halves, then remove the outer skin and pith on special equipment, and then use a cutting machine to cut the stalks into 50mm-200mm lengths of stalks, and then cut the stalks Put it into a immersion tank with an alkali content of 1%-1.5%, the water temperature is 20-30°C, and the immersion time is 30-60 minutes, then it is taken out and sent to a roller machine for rolling and dehydration, and then dried. If the water content is less than 5%, grind sawdust or rice husks, peanut shells, bean stalks, hemp stalks, cotton stalks and some sunflower stalks into 10-40 mesh sieves and put them in the mixer Carry out glue sizing and stirring for...

Embodiment 2

[0018] The raw materials are dried so that the water content is less than 5%, so as to ensure the quality of the board. First, a part of the sunflower stalk is broken from the root to the tip, and more than two halves are removed, and then the outer skin and pith are removed. Wait for the stalk section, and then send it to a soaking pool with an alkali concentration of 1%-1.5% for 30-60 minutes, and the water temperature is 20-30 degrees, take it out and send it to a roller machine for rolling and dehydration, and after drying For sizing, crush a part of the sunflower stalks into 10-40 mesh sieved fragments and send them to the mixer for sizing and mixing. After cutting and gluing the 0.5mm thick wood dough, lay it on the formwork, and then lay the sunflower stalk fragments The thickness of each layer on the surface layer is 6mm, and then it enters the stalk sheet assembly process, that is, the 50mm-200mm length stalk sheets after sizing are randomly laid on the scraps accordin...

Embodiment 3

[0020] Firstly, lay 120 grams of kraft paper that has been cut and glued on the template, and then the rice husk that has been crushed into 10-40 meshes and passed through the sieve is laid on the surface layer after being glued and stirred. The thickness of each layer is 4mm. Lay the crushed and dried 50mm-1200mm long stalk segments on the crushed material in parallel longitudinal arrangement, then lay a layer of 4mm thick rice husk crushed material, and then lay the second layer of horizontally parallel arranged stalk pieces, The vertical and horizontal layers should be laid staggered and vertically, that is, one layer of scraps and one layer of stalks can be laid crisscross and staggered repeatedly for 10 layers, and then a layer of 120 grams of kraft paper is laid on top of it, and then transferred to the press, which can be pressed 12 times each time. Sheet material, pressure 1200 tons, temperature 160 degree, hot pressing time 8 minutes, can suppress the plate material of...

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Abstract

The invention provides a process for pretreating raw materials of sunflower stalk composite boards and pressing assemblies, which relates to the manufacturing industry of artificial boards of non-wood crop stalk hulls. In the process for pretreating raw materials and pressing assemblies, sunflower stalk is used as a main material of boards, and saw dust, rice hulls, peanut hulls, bean stalk, hemp stalk and cotton stalk are used for replacing wood to manufacture artificial boards. In the invention, the sunflower stalk is longitudinally broken and cut into stalk sections of which the lengths are 50-200mm to be used as main materials of the boards, thereby improving the strength of the boards; and the saw dust, the rice hulls, the peanut hulls, the bean stalk, the hemp stalk, the cotton stalk and part of broken materials of the sunflower stalk are used as auxiliary materials of the boards, thereby saving the wood. The concrete steps are described in the specification in detail.

Description

Technical field: [0001] The sunflower stalk composite board raw material pretreatment and billet pressing process of the present invention relate to the non-wood crop straw shell skin artificial board production industry, that is, sunflower stalks are selected as the main material of the board, and saw foam, rice husk, peanut shell and bean stalk are selected. , Hemp stalks, cotton stalks and some sunflower stalks are crushed and then used as auxiliary materials for boards, which replace the sunflower stalk raw material pretreatment and compacting process for wood-based panels. Background technique: [0002] In recent years, the process of using straw as raw material to manufacture boards has been continuously introduced, but there seem to be many defects: straw composite board and its manufacturing process, (CN1294094) it uses one of straw, chaff, straw, etc. as the main material, together with Lightly burnt powder, improver, after stirring, injection molding, adding glass ...

Claims

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Application Information

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IPC IPC(8): B27N3/06B27N1/00B27N1/02B27N3/08B27N3/10B27N3/18B27L11/06B27K9/00C09J161/06C09J161/14
Inventor 刘金忠
Owner 刘金忠
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