Antique paper using panda bamboo powder and method for manufacturing the same

Abstract

The application discloses a kind of antique paper with panda edible bamboo regenerative superfine bamboo powder as raw material and a manufacturing method thereof.The antique paper includes the following components: plant fiber, superfine bamboo powder, film forming agent.The plant fiber can use paper mulberry bark fiber, staggered arrangement forms the skeleton of paper, and the skeleton has gaps.The superfine bamboo powder can be obtained by processing fresh bamboo leaves, bamboo, panda edible bamboo waste, or even panda excrement.The superfine bamboo powder is located in the gaps and the surface of the plant fiber.The film forming agent uses transparent gum substance extracted from natural plants, such as sodium alginate.The film forming agent fills the gaps and wraps and fixes the superfine bamboo powder.The superfine bamboo powder is obtained, and the panda edible bamboo and its waste are recycled.The antique paper is made of superfine bamboo powder using traditional process, has color close to bamboo and light bamboo fragrance.

Description

TECHNICAL FIELD

[0001] The present application relates to an application method of superfine bamboo powder, specifically to an antique paper using regenerated superfine bamboo powder of panda bamboo as raw material and a manufacturing method thereof, belonging to the technical field of waste treatment and papermaking. BACKGROUND

[0002] Pandas mainly eat a type of bamboo called arrow bamboo, which is one of the main sources of food in their diet. Arrow bamboo is a high mountain bamboo that grows in the subtropical and temperate regions of southwestern China, particularly in the mountainous areas of Sichuan, Shaanxi, and Gansu provinces. It is particularly favored by pandas because of its high water content, soft fibers, easy digestion, and high nutritional value, which are suitable for their digestive system.

[0003] Panda bamboo waste can be used as a renewable resource because its main component is plant fiber. There are some methods on the market to handle panda bamboo waste, but the special nature and resource value of the fiber have not been fully exploited, especially there is no special method for disposal. Here are some currently known methods for handling panda bamboo waste.

[0004] Composting: Traditional composting methods can be used for bamboo waste, including bamboo fiber after pandas excrete, in addition to waste after eating. This type of material may require longer degradation time and may cause odor problems.

[0005] Bamboo powder production process: Bamboo is introduced through a series of chemical additives and processing procedures to obtain bamboo powder products, but the source of chemical additives is not panda bamboo waste, and there is secondary pollution to the environment. The chemical wastewater disposal method is not specified. See Chinese patent application CN1311955C entitled "Bamboo powder processing technology".

[0006] Heat treatment technology: Some high-temperature treatment technologies can sterilize and degrade bamboo fiber, as its main component is plant fiber and is used as an additive raw material for papermaking, but these methods do not have specialized equipment for processing, especially harmful substances in panda feces have not been tested, and the products produced pose some health risks. See Chinese patent application CN102383340A entitled "Preparation method of panda excrement paper".

[0007] Therefore, there are still some problems in the current methods for handling panda bamboo waste. Traditional disposal methods face the risk of resource waste or environmental pollution, so it is necessary to propose a more effective disposal method to maximize resource utilization and environmental sustainability. Although there are some methods for handling bamboo waste, there is no disposal method designed specifically for the high fiber characteristics of panda bamboo waste.

[0008] The present application aims to overcome the deficiencies of the prior art and provide a more efficient and environmentally friendly treatment method. SUMMARY

[0009] The technical problem to be solved by the present application is to develop and utilize panda bamboo resources, especially panda bamboo waste.

[0010] To solve the above technical problems, the first aspect of the present application provides an antique paper using panda bamboo regenerated superfine bamboo powder as raw material, comprising the following components:

[0011] Plant fibers are arranged in a staggered manner to form the skeleton of the paper, and the skeleton has gaps;

[0012] Superfine bamboo powder is located in the gaps and on the surface of the plant fibers;

[0013] A film-forming agent is used, which is a transparent gum extracted from natural plants; the film-forming agent fills the gaps and encapsulates and fixes the superfine bamboo powder.

[0014] In some embodiments, the fineness of the superfine bamboo powder is 800-1000 mesh.

[0015] In some embodiments, the superfine bamboo powder is bamboo leaf powder obtained by processing fresh bamboo leaves, which retains the color and odor of bamboo leaves.

[0016] In some embodiments, the superfine bamboo powder is obtained by processing panda bamboo waste.

[0017] In some embodiments, the superfine bamboo powder is extracted from panda feces.

[0018] In some embodiments, the plant fibers are broussonetia papyrifera fibers, and the film-forming agent is sodium alginate.

[0019] The second aspect of the present application provides a manufacturing method for the above-mentioned antique paper, comprising the following steps:

[0020] Step one: crush fresh bamboo raw materials, fine grind, sieve, and obtain superfine bamboo powder with a fineness of 800-1000 mesh;

[0021] Step two: mix the superfine bamboo powder with dehydrated broussonetia papyrifera fibers in proportion, add water and stir to obtain papermaking raw materials;

[0022] Step three: add water and sodium alginate to the papermaking raw materials and mix thoroughly;

[0023] Step four: use a hand papermaking frame to take the pulp, then transfer it to a hot press plate, remove water under pressure, and preliminarily dry and shape, then take it out and air dry.

[0024] Preferably, in step two, the ratio of superfine bamboo powder to dehydrated broussonetia papyrifera bark fiber is 2:8, the temperature of water is kept at 50-60℃, and the stirring time is more than 10 minutes.

[0025] Preferably, in step three, the ratio of papermaking raw material, water and sodium alginate is 1:200:0.1.

[0026] Preferably, in step four, the preliminary drying refers to hot pressing at 80℃ for 20 minutes.

[0027] The present application has the following advantages: The present application discloses a superfine bamboo powder which is made of panda edible bamboo. The raw material can be fresh bamboo leaves, bamboo, panda edible bamboo waste, or even panda excrement, which realizes the recycling of waste. The antique paper made of the superfine bamboo powder by traditional process has a color close to that of bamboo and a faint bamboo fragrance, and can be further processed into handicrafts and souvenirs. DETAILED DESCRIPTION

[0028] In the description of the present patent, the words "comprise" or "have" and the like mean that the elements or objects appearing before "comprise" or "have" cover the elements or objects listed after "comprise" or "have" and their equivalent elements, and do not exclude other elements or objects.

[0029] Embodiment 1

[0030] In this embodiment, an antique paper is made of plant fiber, superfine bamboo powder and film-forming agent. The plant fiber is broussonetia papyrifera bark fiber, which is arranged in a staggered manner to form the skeleton of the paper, and has gaps between the fibers. The superfine bamboo powder is made of fresh bamboo leaves and provides color and fragrance to the paper. The superfine bamboo powder is light green and has a faint bamboo fragrance. The superfine bamboo powder is located in the gaps between the fibers and on the surface of the fibers. The film-forming agent is sodium alginate, which is a transparent gum extracted from natural plants. The sodium alginate fills the gaps between the fibers and wraps the superfine bamboo powder.

[0031] Most of the superfine bamboo powder is wrapped by the sodium alginate and isolated from oxygen and water vapor in the air, so that the natural color of the superfine bamboo powder can be maintained for a long time. A small part of the superfine bamboo powder is located on the surface of the fibers and is not completely wrapped by the sodium alginate, so that the bamboo fragrance of the paper is emitted by this part of the superfine bamboo powder.

[0032] The antique paper is made by the following steps:

[0033] In step one, fresh bamboo leaves are crushed, finely ground and sieved to obtain superfine bamboo powder with a fineness of 800-1000 mesh.

[0034] After the bamboo leaves are picked, they usually need to be used within 24 hours. If the processing is done in summer, it needs to be completed in a shorter time to preserve the color and aroma of fresh bamboo leaves, so that they can be added to paper as much as possible.

[0035] Step two: Mix the superfine bamboo powder with the dehydrated balsa bark fibers in a ratio of 2:8, add warm water at 50-60°C and stir for more than 10 minutes to ensure that the balsa bark fibers are fully moistened and evenly mixed with the superfine bamboo powder, obtaining the papermaking raw material.

[0036] Balsa (also known as balsa, camphor tree) is a common deciduous tree, and its bark is rich in cellulose, suitable for the production of fiber products. Balsa bark fiber is a common source of cellulose, with certain strength and softness, suitable for the production of various types of fiber products, such as paper, fiber board, fiber cloth, etc.

[0037] Choose mature balsa trees and collect their bark. Generally, it is collected during the mature season of the tree to ensure the highest cellulose content in the bark. The collected balsa bark is soaked in water to soften the bark and remove impurities. The soaked balsa bark is subjected to kiering treatment to further soften the cellulose and remove residual lignin and other impurities. The cellulose is extracted by physical or chemical methods, dried and packaged. In this way, dehydrated balsa bark fiber is obtained.

[0038] Step three: Add water and sodium alginate to the papermaking raw material obtained in step two and mix thoroughly. Papermaking raw material: water: sodium alginate = 1:200:0.1.

[0039] Sodium alginate is usually white crystalline or powdery, odorless, and slightly salty. It has good solubility in water and forms a gelatinous solution with viscosity. Sodium alginate is used as an additive in the papermaking process of this patent, and its specific effects are as follows.

[0040] Enhance paper strength: As an ionic polymer, sodium alginate can form hydrogen bonds or ionic bonds with the surface of the fibers, thereby increasing the bonding force between the fibers and improving the tensile strength and tear strength of the paper;

[0041] Improve paper surface smoothness: Sodium alginate can form a film on the surface of the paper, filling the small pores and depressions on the surface of the paper, making the paper surface smoother and more uniform, improving the printing quality and appearance;

[0042] Increase paper stability: With the increase in the wet strength of the paper, sodium alginate can improve the wet strength and water resistance of the paper, making the paper less likely to deform or soften in a humid environment;

[0043] Adjusting the pH value of the pulp: Sodium alginate can be used as a buffer to adjust the pH value of the pulp, which helps to control the acidity and alkalinity during the papermaking process, and improves the stability and quality of the paper.

[0044] In addition, because sodium alginate forms a transparent gel when it comes into contact with water, it can wrap the superfine bamboo powder.

[0045] Step four, use a hand papermaking frame to take the pulp, then transfer it to a hot press plate, remove the water under pressure, 80℃ hot press for 20min preliminary drying and setting, then take out and air dry. In this way, the antique paper with bamboo fragrance and color is obtained.

[0046] Example 2

[0047] The difference between Example 2 and Example 1 is that the superfine bamboo powder in this example is obtained by processing bamboo, and the other raw materials and processes are the same as in Example 1.

[0048] The process steps for processing bamboo into superfine bamboo powder are as follows: select suitable bamboo for processing, usually choose fresh and hard bamboo. Clean the collected bamboo to ensure the surface is clean. Cut the cleaned bamboo into small pieces, then crush it by mechanical equipment to make it into granules. Superfine processing is carried out on the above-mentioned bamboo particles, usually using high-speed grinding or air jet milling technology to make the obtained bamboo powder particles smaller.

[0049] The color of superfine bamboo powder is usually light gray or light brown, which depends on the type of bamboo raw material, the processing method during processing and the purity of the bamboo powder. In the production process, the processing time should be minimized and the processing temperature should be reduced to ensure that the color of the bamboo powder remains as natural as possible.

[0050] Superfine bamboo powder generally has no obvious smell. During processing, chemical treatment or addition of any harmful substances to the bamboo powder should be avoided as much as possible to maintain its natural characteristics. Therefore, superfine bamboo powder is usually odorless or has a faint bamboo fragrance, but it will not have a stimulating or peculiar smell.

[0051] The superfine bamboo powder obtained in this example has the same papermaking application as in Example 1, which will not be described here.

[0052] Example 3

[0053] The difference between Example 3 and Example 1 is that the superfine bamboo powder in this example is obtained from panda bamboo waste, which may contain both bamboo and bamboo leaves. Because it is waste, it contains a higher proportion of impurities, which need to be removed by special equipment and process. The complete set of equipment required in this example includes some modules and processes as follows.

[0054] Cleaning module: including feeding device, cleaning device and wastewater discharge device. Feeding device is used to introduce bamboo waste into the cleaning system, and the cleaning device uses high-pressure water or cleaning liquid spraying to effectively remove the attachments on the bamboo waste, ensuring efficient operation of the subsequent processing link. The wastewater discharge device is used to discharge or perform secondary treatment on the cleaned water.

[0055] High-temperature processing module: including heating device, temperature control system and ventilation system. The heating device can use electric heating, steam heating, etc. The temperature control system is responsible for monitoring and adjusting the temperature during processing, and the ventilation system is used to remove the gas generated during processing. The bamboo waste is treated at high temperature for a certain period of time to effectively inactivate and decompose harmful microorganisms, while ensuring the hygiene and safety of the renewable resources.

[0056] Drying module: including drying chamber, hot air circulation system and temperature and humidity control system. The hot air circulation system can provide heat energy by electric heating or other means, and the temperature and humidity control system is used to adjust the humidity and temperature during processing. The bamboo waste after cleaning has high water content, which is reduced in the drying chamber at appropriate temperature and humidity to improve the stability of the renewable resources.

[0057] Pulverizing module: including pulverizer and vibrating screen. The pulverizer can use blade pulverization or other mechanical pulverization, and the vibrating screen is used to screen the pulverized renewable raw materials to obtain uniform and fine particles. The dried bamboo waste is pulverized into powder-shaped renewable raw materials, i.e. ultra-fine bamboo powder, which is then packaged, stored and transported.

[0058] The above-mentioned panda bamboo waste processing complete equipment is different from general processing equipment, which is a special processing equipment for plant fibers. The process adopted in this patent is different from simple composting, which realizes efficient processing of panda bamboo waste and maximizes the use of resources. Through process and parameter control, different specifications of renewable raw materials can be obtained to meet application requirements.

[0059] The specific process of making antique paper with ultra-fine bamboo powder as raw material is as follows:

[0060] 1. Bamboo powder pretreatment. The bamboo powder prepared from panda bamboo waste is placed in a refiner, and after 15 minutes, the bamboo powder is passed through a screen to obtain 800-1000 mesh ultra-fine bamboo powder.

[0061] 2. Papermaking raw materials. Mix ultra-fine bamboo powder 20% + dehydrated balsa wood fiber 80% according to the proportion. Add the prepared raw materials to an appropriate amount of water, and uniformly disperse under the action of a stirrer. The water temperature is 50-60℃, and the stirring time is 10 minutes.

[0062] 3. Pulping. The ratio of pulping raw material (ultrafine bamboo powder & broussonetia papyrifera fiber), water, sodium alginate was 1:200:0.1. Stirring mixed for 30 min.

[0063] 4. Papermaking. The paper pulp was taken by hand papermaking frame, the thickness of the pulp in the paper frame determined the gram weight of the paper after molding, the thickness of 1 mm and 4 mm made the paper with different gram weight, the paper pulp was taken and transferred to the hot press plate, the pressure removed the water and applied 80℃ drying and setting, dried for 20 min. Finally, the paper was taken out to the drying rack for natural drying for 24 h, and the antique paper was obtained.

[0064] The obtained antique paper was tested, and the results were as follows:

[0065] Test item 1: Determination of thickness of paper and paperboard GB / T 451.3—2002

[0066]

[0067] Test item 2: Determination of folding endurance of paper and paperboard GB / T 457—2008 (tension 5N)

[0068] Determination of tear resistance of paper and paperboard GB / T 455—2002

[0069] Determination of stretch of paper and paperboard GB / T 459—2002

[0070] Sample Name Tensile Index (N m / g) Folding Endurance (5N / Time) Tear index (mN-m / g) 2 / g) 1 mm Sample 52 152 12.2 4 mm Sample 76 217 30.5

[0071] Test item 3: Test of total bacterial count in paper according to GB 20810-2006 “Hygienic paper (including hygienic paper base paper)”

[0072]

[0073] 5 The total number of bacterial colonies on the nutrient agar medium plate A1, A2, A3, A4, A5, unit CFU / g X-Total number of bacterial colonies, unit CFU / g, ≤600 CFU / g is qualified

[0074] Test item 4: Appearance evaluation

[0075] The addition of bamboo powder made the paper light green with natural bamboo leaf fragrance.

[0076] Example 4

[0077] Example 4 differs from Example 1 in that the superfine bamboo powder in this example is obtained from panda feces. After the bamboo or bamboo leaves enter the panda's body, the nutrients such as starch in them are digested and absorbed by the panda's gastrointestinal tract, and most of the cellulose is excreted out of the body with the panda's feces. The cellulose content in panda feces is high, but there is also a large proportion of impurities that need to be removed using special equipment and processes to obtain relatively pure superfine bamboo powder. The equipment required in this example and the equipment and processes used are as follows:

[0078] Cleaning module: including feeding device, cleaning device, filtering device and wastewater discharge device. The feeding device is used to introduce panda feces into the cleaning system, the cleaning device uses high-pressure water or cleaning liquid spraying to remove impurities in the feces and only keep the fiber part. The filtering device filters out the cleaned fiber. The wastewater discharge device is used to discharge or further treat the cleaned water.

[0079] High-temperature processing module: including heating device, temperature control system and ventilation system. The heating device can use electric heating, steam heating, etc., and the temperature control system is responsible for monitoring and adjusting the temperature during the processing. The ventilation system is used to remove the gas generated during the processing. The fiber raw material obtained from panda feces is treated at high temperature for a certain period of time to effectively inactivate and decompose harmful microorganisms, ensuring the hygiene and safety of the renewable resources.

[0080] Drying module: including drying chamber, hot air circulation system and temperature and humidity control system. The hot air circulation system can provide heat energy by electric heating or other means, and the temperature and humidity control system is used to adjust the humidity and temperature during the processing. The fiber raw material obtained from panda feces has a high water content and cannot be used directly.

[0081] At appropriate temperature and humidity, the water content is reduced by drying to improve the stability of the renewable resources.

[0082] Pulverizing module: including pulverizer and vibrating screen. The pulverizer can use blade pulverization or other mechanical pulverization, and the vibrating screen is used to screen the pulverized renewable raw material to obtain uniform and fine particles. After the fiber raw material is dried, it is refined into powder-shaped renewable raw material, i.e. superfine bamboo powder, which is then packaged, stored and transported.

[0083] The above set of equipment is simple in design, easy to operate, and has a friendly user interface, making it convenient for veterinarians, researchers, etc. to use. The automatic control system can realize one-key start and process control, reducing the labor intensity of the operators. This set of equipment can effectively control the temperature, humidity and other parameters of each processing link through the coordinated work of the cleaning module, high-temperature processing module, drying module and pulverizing module, etc., ensuring the efficiency and safety of the processing process.

[0084] The papermaking application of the superfine bamboo powder is the same as in Example 3, which is not repeated here.

[0085] The preferred embodiments of the present application have been described in detail. It should be understood that modifications and variations can be resorted to without departing from the spirit of this application, as those skilled in the art will readily understand. Accordingly, the scope of the present application should be limited only by the claims attached hereto.

Claims

1. A method for manufacturing antique paper using regenerated superfine bamboo powder of bamboo eaten by pandas as raw material, characterized in that, The method comprises the following steps: Step one, crushing, refining and sieving fresh bamboo raw materials to obtain superfine bamboo powder with fineness of 800-1000 mesh; the superfine bamboo powder is obtained from one of the following sources: (1) bamboo leaf powder obtained by processing fresh bamboo leaves, which retains the color and odor of bamboo leaves; (2) obtained by processing panda bamboo waste; (3) obtained by extracting from panda feces; Step two, mixing the superfine bamboo powder with dehydrated balsa tree bark fibers in a certain proportion, adding water and stirring to obtain papermaking raw materials; Step three, adding water and sodium alginate to the papermaking raw materials and fully stirring and mixing; Step four, using a hand paper frame to take paper pulp, then transferring to a hot press plate, removing water under pressure, preliminary drying and setting, and then taking out for natural drying; In the obtained antique paper, the dehydrated balsa tree bark fibers are staggered to form the skeleton of the paper, the skeleton has gaps, the superfine bamboo powder is located in the gaps and on the surface of the balsa tree bark fibers, and the sodium alginate fills the gaps and wraps and fixes the superfine bamboo powder.

2. The method of manufacturing an antique paper according to claim 1, characterized by, In step two, the ratio of the superfine bamboo powder to the dehydrated balsa tree bark fibers is 2:8, the temperature of the water is kept at 50-60℃, and the stirring time is more than 10 minutes.

3. The method of manufacturing imitation paper according to claim 1, characterized by, In step three, the ratio of the papermaking raw materials, water and sodium alginate is 1:200:0.

1.

4. The method of manufacturing imitation paper according to claim 1, characterized by, In step four, the preliminary drying refers to hot pressing at 80℃ for 20 minutes.

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