CN111549565A - Preparation method of glue-free glued rice hull egg tray - Google Patents
Preparation method of glue-free glued rice hull egg tray Download PDFInfo
- Publication number
- CN111549565A CN111549565A CN202010356198.2A CN202010356198A CN111549565A CN 111549565 A CN111549565 A CN 111549565A CN 202010356198 A CN202010356198 A CN 202010356198A CN 111549565 A CN111549565 A CN 111549565A
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- CN
- China
- Prior art keywords
- rice hull
- rice
- glue
- mould
- egg
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
Abstract
The invention provides a preparation method of a glue-free glued rice hull egg tray, which comprises the following steps: preparing rice hulls and rice hull ash, and crushing the rice hulls into powder within 40 meshes; mixing the rice hull ash and the rice hull powder according to the weight ratio of 1:3-1:5, adding a proper amount of water into the mixture for humidifying, and uniformly stirring; preheating a mould to 120-150 ℃, laying the uniformly mixed rice hull ash and rice hull powder mixture into a female mould of an egg holder mould at the temperature, pressing down a male mould, and carrying out hot pressing at the pressure of 8-15MPa for more than 10 min; cooling and shaping for more than 30 minutes, and opening the mould to obtain a formed egg tray; and (5) humidifying the egg trays again, and controlling the water content of the egg trays to be 8-10%. The method has the advantages of simple and easy operation, use of natural raw materials, application of a glue-free gluing technology, no glue application of 100 percent, direct landfill recovery after use, natural degradation, no pollution, environmental friendliness and low cost.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of glue-free glued artificial boards, in particular to a preparation method of a glue-free glued rice hull egg tray.
[ background of the invention ]
The egg tray is a packaging tool for holding eggs such as eggs and duck eggs, and has the main functions of shock absorption and convenient transportationIt is suitable for transportation and carrying. The egg tray can be divided into a paper pulp egg tray, a plastic egg tray and the like according to different manufacturing materials so as to prevent collision. The paper pulp egg tray is made of waste paper, can produce waste water pollution during the manufacturing process, is not beneficial to the environment, and the plastic egg tray is a plastic product and becomes nondegradable white garbage after being used. The rice hulls are used in the ancient rural areas to relieve egg collision, reduce breakage of eggs and protect the eggs. The rice hull is natural pollution-free raw material, the rice hull ash is from the rice hull, and redundant CO is not generated from the viewpoint of energy conservation2Can be directly buried after being used, and is a 100 percent pollution-free natural product. The invention provides a pure natural pollution-free green rice hull egg tray.
[ summary of the invention ]
The invention aims to solve the technical problem of providing a preparation method of the glue-free glued rice hull egg tray, which has the advantages of simple and easy operation process, natural raw materials, no glue application in 100 percent, direct landfill recovery after use, natural degradation, no pollution, environmental friendliness, environmental protection and low cost.
The invention is realized by the following steps:
a preparation method of a glue-free glued rice hull egg tray comprises the following steps:
preparing materials: preparing rice hulls and rice hull ash, and crushing the rice hulls into powder within 40 meshes;
mixing: mixing the rice hull ash and the rice hull powder according to the weight ratio of 1:3-1:5, adding a proper amount of water into the mixture for humidifying, and uniformly stirring;
and (3) die pressing: preheating a mould to 120-150 ℃, laying the uniformly mixed rice hull ash and rice hull powder mixture into a female mould of an egg holder mould at the temperature, pressing down a male mould, and carrying out hot pressing at the pressure of 8-15MPa for more than 10 min;
cooling and shaping: cooling and shaping for more than 30 minutes, and opening the mould to obtain a formed egg tray;
and (3) humidifying again: and (5) humidifying the egg trays again, and controlling the water content of the egg trays to be 8-10%.
Further, in the step of preparing materials, the rice hulls and the rice hull ash are absolutely dry.
Further, in the mixing step, the moisture content of the mixture is controlled within 30-40% through humidity adjustment.
Further, the mixing is specifically as follows: mixing the rice hull ash and the rice hull powder according to the weight ratio of 1:3-1:5, adding a proper amount of water into the mixture for humidifying, uniformly stirring, and drying the mixture of the rice hull ash and the rice hull powder again to control the water content to be 30-40%.
Further, the rice hull ash is obtained by roasting rice hulls at the temperature of 600-800 ℃.
The invention has the following advantages:
1. the product is made of rice hulls and rice hull ash, natural and pollution-free raw materials are adopted, a glue-free gluing technology is applied, 100% of glue is not applied, the product can be directly buried and recycled after being used up, the product can be naturally degraded without pollution, and the product is green, environment-friendly and low in cost.
2. The preparation method has simple process, easy operation, low requirement on the professional of operators and easy popularization.
[ detailed description ] embodiments
The invention relates to a preparation method of a glue-free glued rice hull egg tray, which comprises the following steps:
preparing materials: preparing rice hulls and rice hull ash, and crushing the rice hulls into powder within 40 meshes;
mixing: mixing the rice hull ash and the rice hull powder according to the weight ratio of 1:3-1:5, adding a proper amount of water into the mixture for humidifying, and uniformly stirring;
and (3) die pressing: preheating a mould to 120-150 ℃, preventing uneven heating, laying the uniformly mixed rice hull ash and rice hull powder mixture into a female mould of an egg holder mould at the temperature, pressing down a male mould, and carrying out hot pressing at the pressure of 8-15MPa for more than 10 min; heating to enable the rice hull powder and the rice hull ash to generate sticky substances, and pressurizing to enable the powder materials to be bonded and formed;
cooling and shaping: cooling and shaping for more than 30 minutes, and opening the mould to obtain a formed egg tray;
and (3) humidifying again: and (4) humidifying the egg trays again, controlling the water content of the egg trays to be 8-10%, and preventing the egg trays from warping and deforming after drying.
In the material preparation step, the rice hulls and the rice hull ash are absolutely dry.
In the mixing step, the moisture content of the mixture is controlled within 30-40% by adjusting the humidity.
The mixing is specifically as follows: mixing the rice hull ash and the rice hull powder according to the weight ratio of 1:3-1:5, adding a proper amount of water into the mixture for humidifying, uniformly stirring, and drying the mixture of the rice hull ash and the rice hull powder again to control the water content to be 30-40%.
The rice hull ash is obtained by roasting rice hulls at the temperature of 600-800 ℃.
The present invention is further described with reference to the following specific examples, which are only exemplary embodiments thereof, and the egg tray with different densities and hardnesses can be obtained by adjusting the process parameters such as water content, pressure, temperature, etc. as required.
Examples
An example of the hot pressing process is an egg holder hot pressing process which is used for placing 30 eggs and has the weight of 130 g.
Preparing materials: preparing absolutely dry rice hulls and rice hull ash, and crushing the rice hulls into powder within 40 meshes;
mixing: weighing 100g of rice hull powder and 30g of rice hull ash, mixing, adding more than 30% of water into the mixture for humidifying, uniformly stirring, drying the mixture of the rice hull ash and the rice hull powder again, and controlling the water content to be 30%;
and (3) die pressing: preheating a mould to 150 ℃, manually laying the uniformly mixed rice hull ash and rice hull powder mixture into a female die of the mould, wherein the female die is in the shape of 30 egg holders, the male die is pressed at the speed of 20mm/min, the pressure is kept at 10MPa, and the heat preservation and pressure maintaining time is 10 min;
cooling and shaping: cooling and shaping for more than 30 minutes, and opening the mould to obtain a formed egg tray;
and (3) humidifying again: and (5) humidifying the egg trays again, and controlling the water content of the egg trays to be about 10% to obtain finished egg trays.
And (3) testing: a wood universal mechanical testing machine is applied to test the finished product egg tray according to the national standard GB/T4897-.
The rice hull glue-free gluing principle: the rice hull contains 35.5-45% of crude fiber, 21-26% of lignin, 2.5-3.0% of crude protein, 0.7-1.3% of lipid and 16-22% of pentosan, the crude fiber generates furfural, furfuryl alcohol and other organic compounds under the action of hot pressing, and the lignin and degradation products (containing polyphenol) thereof can react with furfural compounds to form substances similar to an adhesive through condensation reaction of phenolic resin adhesive. After the rice hulls are burnt, rice ash containing rich silicon dioxide is generated, and the rice ash is a good cementing material. The two materials can act together to produce a gluing effect, namely self-gluing.
The invention has the following advantages:
1. the product is made of rice hulls and rice hull ash, natural and pollution-free raw materials are adopted, a glue-free gluing technology is applied, 100% of glue is not applied, the product can be directly buried and recycled after being used up, the product can be naturally degraded without pollution, and the product is green, environment-friendly and low in cost.
2. The preparation method has simple process, easy operation, low requirement on the professional of operators and easy popularization.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (5)
1. A preparation method of a glue-free glued rice hull egg tray is characterized by comprising the following steps: the method comprises the following steps:
preparing materials: preparing rice hulls and rice hull ash, and crushing the rice hulls into powder within 40 meshes;
mixing: mixing the rice hull ash and the rice hull powder according to the weight ratio of 1:3-1:5, adding a proper amount of water into the mixture for humidifying, and uniformly stirring;
and (3) die pressing: preheating a mould to 120-150 ℃, laying the uniformly mixed rice hull ash and rice hull powder mixture into a female mould of an egg holder mould at the temperature, pressing down a male mould, and carrying out hot pressing at the pressure of 8-15MPa for more than 10 min;
cooling and shaping: cooling and shaping for more than 30 minutes, and opening the mould to obtain a formed egg tray;
and (3) humidifying again: and (5) humidifying the egg trays again, and controlling the water content of the egg trays to be 8-10%.
2. The method for preparing the glue-free glued rice hull egg tray according to claim 1, which is characterized in that: in the material preparation step, the rice hulls and the rice hull ash are absolutely dry.
3. The method for preparing the glue-free glued rice hull egg tray according to claim 1, which is characterized in that: in the mixing step, the moisture content of the mixture is controlled within 30-40% by adjusting the humidity.
4. The method for preparing the glue-free glued rice hull egg tray according to claim 1, which is characterized in that: the mixing is specifically as follows: mixing the rice hull ash and the rice hull powder according to the weight ratio of 1:3-1:5, adding a proper amount of water into the mixture for humidifying, uniformly stirring, and drying the mixture of the rice hull ash and the rice hull powder again to control the water content to be 30-40%.
5. The method for preparing the glue-free glued rice hull egg tray according to claim 1, which is characterized in that: the rice hull ash is obtained by roasting rice hulls at the temperature of 600-800 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010356198.2A CN111549565A (en) | 2020-04-29 | 2020-04-29 | Preparation method of glue-free glued rice hull egg tray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010356198.2A CN111549565A (en) | 2020-04-29 | 2020-04-29 | Preparation method of glue-free glued rice hull egg tray |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111549565A true CN111549565A (en) | 2020-08-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010356198.2A Withdrawn CN111549565A (en) | 2020-04-29 | 2020-04-29 | Preparation method of glue-free glued rice hull egg tray |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003000810A1 (en) * | 2001-06-25 | 2003-01-03 | Raman Boards Ltd | An improved impregnating / coating composition and a composite incorporating the composition |
| CN101112768A (en) * | 2006-07-25 | 2008-01-30 | 张路举 | Process for producing board through cold pressing and molding by using cropper straw |
| CN101305883A (en) * | 2008-07-02 | 2008-11-19 | 周泰山 | Rice hull type disposable table ware and container and its production method and device |
| CN101733810A (en) * | 2008-11-11 | 2010-06-16 | 张喜春 | Method for manufacturing straw egg tray |
| CN102690524A (en) * | 2012-05-16 | 2012-09-26 | 庄展鹏 | Rice hull fiber synthetic resin powder and manufacturing technology of rice hull fiber products |
| CN102794803A (en) * | 2012-08-30 | 2012-11-28 | 大连绿之态科技有限公司 | Manufacturing method for vegetable fiber compound tableware |
| CN105820592A (en) * | 2016-04-08 | 2016-08-03 | 苏州市鼎立包装有限公司 | Biomass packaging material and preparation method thereof |
| CN110774712A (en) * | 2019-11-08 | 2020-02-11 | 黑龙江幸福人生态农业开发股份有限公司 | Preparation method of bio-based composite material sheet and plastic uptake tray manufactured by sheet |
-
2020
- 2020-04-29 CN CN202010356198.2A patent/CN111549565A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003000810A1 (en) * | 2001-06-25 | 2003-01-03 | Raman Boards Ltd | An improved impregnating / coating composition and a composite incorporating the composition |
| CN101112768A (en) * | 2006-07-25 | 2008-01-30 | 张路举 | Process for producing board through cold pressing and molding by using cropper straw |
| CN101305883A (en) * | 2008-07-02 | 2008-11-19 | 周泰山 | Rice hull type disposable table ware and container and its production method and device |
| CN101733810A (en) * | 2008-11-11 | 2010-06-16 | 张喜春 | Method for manufacturing straw egg tray |
| CN102690524A (en) * | 2012-05-16 | 2012-09-26 | 庄展鹏 | Rice hull fiber synthetic resin powder and manufacturing technology of rice hull fiber products |
| CN102794803A (en) * | 2012-08-30 | 2012-11-28 | 大连绿之态科技有限公司 | Manufacturing method for vegetable fiber compound tableware |
| CN105820592A (en) * | 2016-04-08 | 2016-08-03 | 苏州市鼎立包装有限公司 | Biomass packaging material and preparation method thereof |
| CN110774712A (en) * | 2019-11-08 | 2020-02-11 | 黑龙江幸福人生态农业开发股份有限公司 | Preparation method of bio-based composite material sheet and plastic uptake tray manufactured by sheet |
Non-Patent Citations (3)
| Title |
|---|
| 孙亮等: "稻壳热压成型工艺参数试验", 《农业机械学报》 * |
| 李可: "生物质致密成型技术研究", 《农村牧区机械化》 * |
| 鲁海宁等: "全降解餐盒成型模具热分析与优化", 《模具工业》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20200818 |