阅读说明：本技术 一种竹笋壳纤维餐盒及其制作工艺 (Bamboo shoot shell fiber lunch box and manufacturing process thereof ) 是由 刘洁 白亮 于 2020-12-16 设计创作，主要内容包括：本发明提出了一种竹笋壳纤维餐盒及其制作工艺,涉及一次性餐盒的技术领域。一种竹笋壳纤维餐盒,其包括如下组分：竹笋壳、湿强剂、防水剂和硫酸铝,其采用竹笋壳作为原料,既提升了一次性餐盒的环保安全性,又能够对废弃竹笋壳资源进行回收利用,低碳环保,能够节约资源,保护环境。此外本发明还提出一种竹笋壳纤维餐盒的制作工艺,其包括如下步骤：原料预处理、原料蒸煮、打纤漂白、打浆调配、成品压制,该工艺流程简单,能够对废弃竹笋壳资源进行回收利用,有助于降低成本,生产出来的餐盒安全环保。(The invention provides a bamboo shoot shell fiber lunch box and a manufacturing process thereof, and relates to the technical field of disposable lunch boxes. A bamboo shoot shell fiber lunch box comprises the following components: bamboo shoot shell, wet strength agent, waterproof agent and aluminum sulfate, it adopts bamboo shoot shell as the raw materials, has both promoted the environmental protection security of disposable cutlery box, can carry out recycle to abandonment bamboo shoot shell resource again, and low carbon environmental protection can resources are saved, the environmental protection. In addition, the invention also provides a manufacturing process of the bamboo shoot shell fiber lunch box, which comprises the following steps: the method has the advantages that the method is simple in process flow, waste bamboo shoot shell resources can be recycled, the cost is reduced, and the produced lunch box is safe and environment-friendly.)

1. The bamboo shoot shell fiber lunch box is characterized by comprising the following components: bamboo shoot shell, wet strength agent, waterproofing agent and aluminum sulfate.

2. The bamboo shoot shell fiber lunch box as claimed in claim 1, wherein the components in parts by weight are respectively: 3000 portions of bamboo shoot shell, the dosage of the wet strength agent is 1-5% of the dosage of the bamboo shoot shell, the dosage of the waterproofing agent is 1-5% of the dosage of the bamboo shoot shell, and the dosage of the aluminum sulfate is 1-5% of the dosage of the bamboo shoot shell.

3. The bamboo shoot shell fiber lunch box as claimed in claim 1, wherein the components in parts by weight are respectively: 2000 parts of bamboo shoot shells, wherein the using amount of the wet strength agent is 2% of the using amount of the bamboo shoot shells, the using amount of the waterproofing agent is 3% of the using amount of the bamboo shoot shells, and the using amount of the aluminum sulfate is 2% of the using amount of the bamboo shoot shells.

4. A process for manufacturing the bamboo shoot shell fiber lunch box as claimed in any one of claims 1-3, which comprises the steps of:

pretreatment of raw materials: sterilizing the bamboo shoot shell raw material, kneading and removing impurities in a fiber kneading machine, then pickling in a sulfuric acid solution, and washing with water after pickling;

cooking raw materials: putting the pretreated raw material into a sodium hydroxide solution for primary cooking, then washing with water, putting the washed raw material into a mixed solution of sodium hydroxide, sodium polyphosphate and water glass for secondary cooking after the washing with water is finished, and washing with water after the secondary cooking is finished;

beating fibers and bleaching: putting the cooked raw materials into a fiber beating machine for beating fibers, then carrying out acid washing in a sulfuric acid solution, bleaching in hydrogen peroxide, then carrying out water washing, and dewatering to remove excessive moisture after the water washing is finished;

pulping and blending: pulping in a pulping machine, adding a wet strength agent, a waterproof agent and aluminum sulfate, and mixing to obtain a slurry;

and (3) pressing a finished product: and (3) pressing and forming the slurry, then carrying out sterilization treatment, and carrying out shaping and edge cutting after the sterilization treatment is finished to obtain a finished product.

5. The manufacturing process of the bamboo shoot shell fiber lunch box according to claim 4, wherein in the raw material pretreatment step, sterilization treatment is performed at 90-100 ℃.

6. The manufacturing process of the bamboo shoot shell fiber lunch box according to claim 4, wherein in the raw material pretreatment step, the pickling treatment is performed for 30-90min in a sulfuric acid solution with a concentration of 1.0-1.5g/L at 30-60 ℃, and the weight ratio of the raw material to the sulfuric acid solution is 1: 10-20.

7. The manufacturing process of the bamboo shoot shell fiber lunch box according to claim 4, wherein in the raw material cooking step, when primary cooking is carried out, the concentration of the sodium hydroxide solution is 10g/L, the cooking temperature is 90-100 ℃, the cooking time is 1-2h, and the weight ratio of the raw material to the sodium hydroxide solution is 1: 10-20.

8. The manufacturing process of the bamboo shoot shell fiber lunch box according to claim 4, wherein in the step of cooking the raw materials, when the secondary cooking is performed, the weight ratio of the mixed solution of sodium hydroxide, sodium polyphosphate and water glass to the raw materials is 10-20:1, wherein the concentration of sodium hydroxide is 10-15g/L, the sodium polyphosphate accounts for 5% of the mixed solution, the water glass accounts for 8% of the mixed solution, the cooking temperature is 90-100 ℃, and the cooking time is 1-2 h.

9. The manufacturing process of the bamboo shoot shell fiber lunch box according to claim 4, wherein in the step of beating fibers and bleaching, the concentration of hydrogen peroxide is 6g/L, and the concentration of sulfuric acid solution is 3-4 g/L.

10. The manufacturing process of the bamboo shoot shell fiber lunch box according to claim 4, wherein in the pulping and blending step, the pulping concentration is 5%, and the beating degree is 25-30 ° SR.

Technical Field

The invention relates to the technical field of disposable lunch boxes, in particular to a bamboo shoot shell fiber lunch box and a manufacturing process thereof.

Background

The disposable lunch box is from the initial foaming type to the degradable type, and the using amount of the disposable lunch box is increased or decreased. Office workers and students are the main population who use the disposable lunch box, and although most people know that the disposable lunch box has many disputes from the aspects of sanitation and environmental protection, the disposable lunch box is convenient and can be used by a large number of people. Disposable cutlery boxes on the market today do not all meet national standards, and long-term use unqualified cutlery box can bring harmful effects to the health, and unqualified disposable cutlery box also can cause very big pollution to the environment, endangers seriously.

Disclosure of Invention

The invention aims to provide a bamboo shoot shell fiber lunch box which adopts bamboo shoot shells as raw materials, improves the environmental protection safety of the disposable lunch box, can recycle waste bamboo shoot shell resources, is low-carbon and environment-friendly, and can save resources and protect the environment.

The invention also aims to provide a manufacturing process of the bamboo shoot shell fiber lunch box, the process flow is simple, the waste bamboo shoot shell resources can be recycled, the cost is reduced, and the produced lunch box is safe and environment-friendly.

The technical problem to be solved by the invention is realized by adopting the following technical scheme.

On one hand, the embodiment of the invention provides a bamboo shoot shell fiber lunch box, which comprises the following components: bamboo shoot shell, wet strength agent, waterproofing agent and aluminum sulfate.

On the other hand, the embodiment of the invention also provides a manufacturing process of the bamboo shoot shell fiber lunch box, which comprises the following steps:

pretreatment of raw materials: sterilizing the bamboo shoot shell raw material, kneading and removing impurities in a fiber kneading machine, then pickling in a sulfuric acid solution, and washing with water after pickling;

cooking raw materials: putting the pretreated raw material into a sodium hydroxide solution for primary cooking, then washing with water, putting the washed raw material into a mixed solution of sodium hydroxide, sodium polyphosphate and water glass for secondary cooking after the washing with water is finished, and washing with water after the secondary cooking is finished;

beating fibers and bleaching: putting the cooked raw materials into a fiber beating machine for beating fibers, then carrying out acid washing in a sulfuric acid solution, bleaching in hydrogen peroxide, then carrying out water washing, and dewatering to remove excessive moisture after the water washing is finished;

pulping and blending: pulping in a pulping machine, adding a wet strength agent, a waterproof agent and aluminum sulfate, and mixing to obtain a slurry;

and (3) pressing a finished product: and (3) pressing and forming the slurry, then carrying out sterilization treatment, and carrying out shaping and edge cutting after the sterilization treatment is finished to obtain a finished product.

Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:

aiming at the first aspect, the embodiment of the invention provides a bamboo shoot shell fiber lunch box, which comprises the following components: bamboo shoot shell, wet strength agent, waterproofing agent and aluminum sulfate.

In the embodiment, the bamboo shoot shells are used as the main raw materials of the lunch box, so that the environmental protection safety of the lunch box can be effectively improved, and meanwhile, the bamboo shoot shell waste can be recycled, so that the low carbon and environmental protection effects are achieved, the resources can be saved, and the environment can be protected; the wet strength agent can effectively enhance the wet strength performance of the product lunch box and improve the strength of the product lunch box; the waterproof agent can effectively enhance the water resistance of the product lunch box, thereby further improving the use strength of the product lunch box; the aluminum sulfate can further enhance the water resistance and seepage resistance of the product lunch box. Such bamboo shoot shell fibre cutlery box, not only safe environmental protection can carry out recycle with bamboo shoot shell waste material again, helps practicing thrift the cost, saves the resource, the environmental protection.

To the second aspect, an embodiment of the present invention provides a manufacturing process of a bamboo shoot shell fiber lunch box, which includes the following steps: pretreating raw materials, cooking the raw materials, beating fibers, bleaching, pulping, blending and pressing finished products.

In the above embodiment, the bamboo shoot shell raw material is sterilized through the above raw material and processing steps to eliminate harmful bacteria, and then is kneaded to remove impurities through a fiber kneading machine to remove useless impurities in the raw material and improve the purity of the raw material, and then is subjected to pickling treatment in a sulfuric acid solution to soften the raw material so as to facilitate smooth proceeding of subsequent steps. Then, the raw material cooking step is carried out, the raw material is firstly placed into a sodium hydroxide solution for primary cooking, impurities and outer pectin in the raw material are further removed, lignin and cellulose are separated, and a certain bleaching effect can be achieved; washing after the primary cooking is finished, washing to remove attached cooking solution, and then putting into a mixed solution of sodium hydroxide, sodium polyphosphate and water glass for secondary cooking, wherein the sodium polyphosphate can improve the strength of raw material fibers, and the water glass can play a role of a buffering agent and has an auxiliary bleaching effect; and the attached cooking solution is removed by washing after the secondary cooking, so that the purity of the raw material fiber is improved, and the subsequent steps are ensured to be smoothly carried out. Then beating fibers of the raw materials through the fiber beating and bleaching steps, and then carrying out acid washing in a sulfuric acid solution, so that the purity and strength performance of the raw material fibers are improved, redundant impurities are further washed away, and the pH environment is adjusted through the acid washing, so that the subsequent bleaching effect is improved; then bleaching in hydrogen peroxide, washing with water to remove attached solution, dewatering to remove excessive water, and further improving the purity of the raw material fiber. And then pulping is carried out through the pulping and blending steps, the strength performance of the raw material fiber can be improved, and the wet strength performance and the waterproof and anti-seepage performance of the product lunch box can be further improved by adding the wet strength agent, the waterproof agent and the aluminum sulfate, so that the quality of the product lunch box is improved. And finally, pressing and forming the slurry through the finished product pressing step, then sterilizing and eliminating harmful strains, and shaping and cutting edges to obtain the finished product. Whole preparation process flow is simple, can carry out recycle to abandonment bamboo shoot shell resource, helps reduce cost, and the cutlery box of coproduction is safe environmental protection, can save the resource, the environmental protection.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to specific examples.

The embodiment of the invention provides a bamboo shoot shell fiber lunch box which comprises the following components: bamboo shoot shell, wet strength agent, waterproofing agent and aluminum sulfate.

In the embodiment, the bamboo shoot shells are used as the main raw materials of the lunch box, so that the environmental protection safety of the lunch box can be effectively improved, and meanwhile, the bamboo shoot shell waste can be recycled, so that the low carbon and environmental protection effects are achieved, the resources can be saved, and the environment can be protected; the wet strength agent can effectively enhance the wet strength performance of the product lunch box and improve the strength of the product lunch box; the waterproof agent can effectively enhance the water resistance of the product lunch box, thereby further improving the use strength of the product lunch box; the aluminum sulfate can further enhance the water resistance and seepage resistance of the product lunch box. Such bamboo shoot shell fibre cutlery box, not only safe environmental protection can carry out recycle with bamboo shoot shell waste material again, helps practicing thrift the cost, saves the resource, the environmental protection.

Further, in some embodiments of the present invention, the components in parts by weight are: 3000 portions of bamboo shoot shell, the dosage of the wet strength agent is 1-5% of the dosage of the bamboo shoot shell, the dosage of the waterproofing agent is 1-5% of the dosage of the bamboo shoot shell, and the dosage of the aluminum sulfate is 1-5% of the dosage of the bamboo shoot shell.

In the embodiment, by controlling the dosage and proportion of the components, the components can be better combined with each other, the efficacy of the components is fully exerted, the waterproof and anti-seepage performance and the strength performance of the product lunch box are improved, and the influence on the quality of the product lunch box caused by improper component distribution ratio can be avoided.

Further, in some embodiments of the present invention, the components in parts by weight are: 2000 parts of bamboo shoot shells, wherein the using amount of the wet strength agent is 2% of the using amount of the bamboo shoot shells, the using amount of the waterproofing agent is 3% of the using amount of the bamboo shoot shells, and the using amount of the aluminum sulfate is 2% of the using amount of the bamboo shoot shells.

In the above embodiment, by controlling the amount and the ratio of the components, the components can be further combined with each other, and the effects of the components can be fully exerted, so that the waterproof and anti-seepage performance and the strength performance of the product lunch box can be further improved, and the influence on the quality of the product lunch box due to improper component distribution ratio can be avoided.

The embodiment of the invention also provides a manufacturing process of the bamboo shoot shell fiber lunch box, which comprises the following steps:

pretreatment of raw materials: sterilizing the bamboo shoot shell raw material, kneading and removing impurities in a fiber kneading machine, then pickling in a sulfuric acid solution, and washing with water after pickling;

cooking raw materials: putting the pretreated raw material into a sodium hydroxide solution for primary cooking, then washing with water, putting the washed raw material into a mixed solution of sodium hydroxide, sodium polyphosphate and water glass for secondary cooking after the washing with water is finished, and washing with water after the secondary cooking is finished;

beating fibers and bleaching: putting the cooked raw materials into a fiber beating machine for beating fibers, then carrying out acid washing in a sulfuric acid solution, bleaching in hydrogen peroxide, then carrying out water washing, and dewatering to remove excessive moisture after the water washing is finished;

pulping and blending: pulping in a pulping machine, adding a wet strength agent, a waterproof agent and aluminum sulfate, and mixing to obtain a slurry;

and (3) pressing a finished product: and (3) pressing and forming the slurry, then carrying out sterilization treatment, and carrying out shaping and edge cutting after the sterilization treatment is finished to obtain a finished product.

In the above embodiment, the bamboo shoot shell raw material is sterilized through the above raw material and processing steps to eliminate harmful bacteria, and then is kneaded to remove impurities through a fiber kneading machine to remove useless impurities in the raw material and improve the purity of the raw material, and then is subjected to pickling treatment in a sulfuric acid solution to soften the raw material so as to facilitate smooth proceeding of subsequent steps. Then, the raw material cooking step is carried out, the raw material is firstly placed into a sodium hydroxide solution for primary cooking, impurities and outer pectin in the raw material are further removed, lignin and cellulose are separated, and a certain bleaching effect can be achieved; washing after the primary cooking is finished, washing to remove attached cooking solution, and then putting into a mixed solution of sodium hydroxide, sodium polyphosphate and water glass for secondary cooking, wherein the sodium polyphosphate can improve the strength of raw material fibers, and the water glass can play a role of a buffering agent and has an auxiliary bleaching effect; and the attached cooking solution is removed by washing after the secondary cooking, so that the purity of the raw material fiber is improved, and the subsequent steps are ensured to be smoothly carried out. Then beating fibers of the raw materials through the fiber beating and bleaching steps, and then carrying out acid washing in a sulfuric acid solution, so that the purity and strength performance of the raw material fibers are improved, redundant impurities are further washed away, and the pH environment is adjusted through the acid washing, so that the subsequent bleaching effect is improved; then bleaching in hydrogen peroxide, washing with water to remove attached solution, dewatering to remove excessive water, and further improving the purity of the raw material fiber. And then pulping is carried out through the pulping and blending steps, the strength performance of the raw material fiber can be improved, and the wet strength performance and the waterproof and anti-seepage performance of the product lunch box can be further improved by adding the wet strength agent, the waterproof agent and the aluminum sulfate, so that the quality of the product lunch box is improved. And finally, pressing and forming the slurry through the finished product pressing step, then sterilizing and eliminating harmful strains, and shaping and cutting edges to obtain the finished product. Whole preparation process flow is simple, can carry out recycle to abandonment bamboo shoot shell resource, helps reduce cost, and the cutlery box of coproduction is safe environmental protection, can save the resource, the environmental protection.

Further, in some embodiments of the present invention, in the raw material pretreatment step, the sterilization treatment is performed at 90 to 100 ℃.

In the embodiment, by controlling the sterilization temperature, harmful bacteria in the raw materials can be fully and effectively killed, the purity of the raw materials is improved, and the quality of the product is further improved.

Further, in some embodiments of the present invention, in the raw material pretreatment step, the raw material is immersed in a sulfuric acid solution with a concentration of 1.0-1.5g/L for 30-90min at 30-60 ℃, and the weight ratio of the raw material to the sulfuric acid solution is 1: 10-20.

In the above embodiment, the temperature, the concentration and the amount of the sulfuric acid solution, and the treatment time are controlled, so that the pickling effect of the raw material is maximized, the raw material is sufficiently softened, and meanwhile, the raw material fiber is protected from being damaged due to improper pickling conditions, so that the quality of the product lunch box is ensured.

Further, in some embodiments of the present invention, in the raw material cooking step, when the primary cooking is performed, the concentration of the sodium hydroxide solution is 10g/L, the cooking temperature is 90 to 100 ℃, the cooking time is 1 to 2 hours, and the weight ratio of the raw material to the sodium hydroxide solution is 1:10 to 20.

In the embodiment, the concentration and the dosage of the sodium hydroxide solution, and the cooking temperature and time are controlled, so that lignin and cellulose in the raw materials are better separated, a certain bleaching effect can be achieved, the raw material fiber can be prevented from being damaged due to improper cooking conditions, and the quality of the product lunch box can be further improved.

Further, in some embodiments of the present invention, in the above raw material cooking step, when performing the secondary cooking, a weight ratio of a mixed solution of sodium hydroxide, sodium polyphosphate and water glass to the raw material is 10-20:1, wherein the concentration of the sodium hydroxide is 10-15g/L, the concentration of the sodium polyphosphate is 5% of the mixed solution, the concentration of the water glass is 8% of the mixed solution, the cooking temperature is 90-100 ℃, and the cooking time is 1-2 h.

In the above embodiment, the concentration and the amount of the sodium hydroxide solution, the amount ratio of each component of the mixed solution, and the cooking temperature and time are controlled in the mixed solution, so that lignin and cellulose in the raw material are further separated, a certain bleaching effect can be achieved, the raw material fiber can be prevented from being damaged due to improper cooking conditions, and the quality of the product lunch box can be better improved.

Further, in some embodiments of the present invention, in the step of beating fibers and bleaching, the concentration of hydrogen peroxide is 6g/L, and the concentration of the sulfuric acid solution is 3 to 4 g/L.

In the above embodiment, by controlling the concentrations of the hydrogen peroxide and the sulfuric acid solution, the sulfuric acid solution can better perform the functions of washing and adjusting the PH environment, and the hydrogen peroxide can better exert the bleaching effect, so that the raw material fiber cannot be damaged due to improper solution concentration, and the quality of the product lunch box can be further improved.

Further, in some embodiments of the present invention, in the pulping and blending step, the pulping concentration is 5%, and the degree of beating is 25 to 30 ° SR.

In the above embodiment, through control making beating concentration and the degree of kowtowing, help promoting the fibrous intensity performance of thick liquids to further promote the use intensity of product cutlery box, strengthen its performances such as waterproof prevention of seepage, improve the quality of product cutlery box.

Example 1

The embodiment provides a bamboo shoot shell fiber lunch box, which is prepared by the following steps:

pretreatment of raw materials: sterilizing 1000g of bamboo shoot shell at 90 ℃, kneading the bamboo shoot shell in a fiber kneading machine to remove impurities, and then pickling the bamboo shoot shell in a sulfuric acid solution with the concentration of 1.0g/L for 30min at the temperature of 30 ℃, wherein the weight ratio of the raw materials to the sulfuric acid solution is 1: 10;

cooking raw materials: putting the pretreated raw material into a sodium hydroxide solution for primary cooking, wherein the concentration of the sodium hydroxide solution is 10g/L, the cooking temperature is 90 ℃, the cooking time is 1h, the weight ratio of the raw material to the sodium hydroxide solution is 1:10, then washing with water, after washing, putting the raw material into a mixed solution of sodium hydroxide, sodium polyphosphate and water glass for secondary cooking, wherein in the secondary cooking, the weight ratio of the mixed solution of the sodium hydroxide, the sodium polyphosphate and the water glass to the raw material is 10:1, the concentration of the sodium hydroxide is 10g/L, the sodium polyphosphate accounts for 5 percent of the mixed solution, the water glass accounts for 8 percent of the mixed solution, the cooking temperature is 90 ℃, the cooking time is 1h, and washing with water after the secondary cooking is finished;

beating fibers and bleaching: putting the cooked raw materials into a fiber beating machine for beating fibers, then carrying out acid pickling in a sulfuric acid solution with the concentration of 3g/L, then bleaching in hydrogen peroxide with the concentration of 6g/L, then carrying out water washing, and dewatering to remove excessive moisture after the water washing is finished;

pulping and blending: pulping in a pulping machine, wherein the pulping concentration is 5%, the beating degree is 25 DEG SR, and then adding a wet strength agent, a waterproof agent and aluminum sulfate for size mixing, wherein the using amount of the wet strength agent is 1% of the using amount of the bamboo shoot shell, the using amount of the waterproof agent is 1% of the using amount of the bamboo shoot shell, and the using amount of the aluminum sulfate is 1% of the using amount of the bamboo shoot shell, so that a pulp is obtained;

and (3) pressing a finished product: and (3) pressing and forming the slurry, then carrying out sterilization treatment, and carrying out shaping and edge cutting after the sterilization treatment is finished to obtain a finished product.

Example 2

The embodiment provides a bamboo shoot shell fiber lunch box, which is prepared by the following steps:

pretreatment of raw materials: sterilizing 3000g of bamboo shoot shell at 100 ℃, kneading in a fiber kneading machine to remove impurities, and then pickling in 1.5g/L sulfuric acid solution at 60 ℃ for 90min, wherein the weight ratio of the raw materials to the sulfuric acid solution is 1: 20;

cooking raw materials: putting the pretreated raw material into a sodium hydroxide solution for primary cooking, wherein the concentration of the sodium hydroxide solution is 10g/L, the cooking temperature is 100 ℃, the cooking time is 2h, the weight ratio of the raw material to the sodium hydroxide solution is 1:20, then washing with water, after washing, putting the raw material into a mixed solution of sodium hydroxide, sodium polyphosphate and water glass for secondary cooking, wherein in the secondary cooking, the weight ratio of the mixed solution of the sodium hydroxide, the sodium polyphosphate and the water glass to the raw material is 20:1, the concentration of the sodium hydroxide is 15g/L, the sodium polyphosphate accounts for 5 percent of the mixed solution, the water glass accounts for 8 percent of the mixed solution, the cooking temperature is 100 ℃, the cooking time is 2h, and washing with water after the secondary cooking is finished;

beating fibers and bleaching: putting the cooked raw materials into a fiber beating machine for beating fibers, then carrying out acid pickling in a sulfuric acid solution with the concentration of 4g/L, then bleaching in hydrogen peroxide with the concentration of 6g/L, then carrying out water washing, and dewatering to remove excessive moisture after the water washing is finished;

pulping and blending: pulping in a pulping machine, wherein the pulping concentration is 5%, the beating degree is 30 DEG SR, and then adding a wet strength agent, a waterproof agent and aluminum sulfate for size mixing, wherein the using amount of the wet strength agent is 5% of the using amount of the bamboo shoot shell, the using amount of the waterproof agent is 5% of the using amount of the bamboo shoot shell, and the using amount of the aluminum sulfate is 5% of the using amount of the bamboo shoot shell, so that a pulp is obtained;

and (3) pressing a finished product: and (3) pressing and forming the slurry, then carrying out sterilization treatment, and carrying out shaping and edge cutting after the sterilization treatment is finished to obtain a finished product.

Example 3

The embodiment provides a bamboo shoot shell fiber lunch box, which is prepared by the following steps:

pretreatment of raw materials: sterilizing 2000g of bamboo shoot shell at 95 ℃, kneading the bamboo shoot shell in a fiber kneading machine to remove impurities, and then pickling the bamboo shoot shell in 1.2g/L sulfuric acid solution at 40 ℃ for 60min, wherein the weight ratio of the raw materials to the sulfuric acid solution is 1: 15;

cooking raw materials: putting the pretreated raw material into a sodium hydroxide solution for primary cooking, wherein the concentration of the sodium hydroxide solution is 10g/L, the cooking temperature is 95 ℃, the cooking time is 1.5h, the weight ratio of the raw material to the sodium hydroxide solution is 1:15, then washing with water, after washing, putting the raw material into a mixed solution of sodium hydroxide, sodium polyphosphate and water glass for secondary cooking, wherein in the secondary cooking, the weight ratio of the mixed solution of sodium hydroxide, sodium polyphosphate and water glass to the raw material is 15:1, the concentration of the sodium hydroxide is 14g/L, the sodium polyphosphate accounts for 5% of the mixed solution, the water glass accounts for 8% of the mixed solution, the cooking temperature is 95 ℃, the cooking time is 1.5h, and washing with water after the secondary cooking is finished;

beating fibers and bleaching: putting the cooked raw materials into a fiber beating machine for beating fibers, then carrying out acid pickling in a sulfuric acid solution with the concentration of 3.5g/L, then bleaching in hydrogen peroxide with the concentration of 6g/L, then carrying out water washing, and dewatering to remove excessive water after the water washing is finished;

pulping and blending: pulping in a pulping machine, wherein the pulping concentration is 5%, the beating degree is 27 DEG SR, and then adding a wet strength agent, a waterproof agent and aluminum sulfate for size mixing, wherein the using amount of the wet strength agent is 3% of the using amount of the bamboo shoot shell, the using amount of the waterproof agent is 3% of the using amount of the bamboo shoot shell, and the using amount of the aluminum sulfate is 3% of the using amount of the bamboo shoot shell, so that a pulp is obtained;

and (3) pressing a finished product: and (3) pressing and forming the slurry, then carrying out sterilization treatment, and carrying out shaping and edge cutting after the sterilization treatment is finished to obtain a finished product.

Example 4

The embodiment provides a bamboo shoot shell fiber lunch box, which is prepared by the following steps:

pretreatment of raw materials: sterilizing 1500g of bamboo shoot shell at 92 ℃, kneading in a fiber kneading machine to remove impurities, and then pickling in 1.4g/L sulfuric acid solution at 50 ℃ for 70min, wherein the weight ratio of the raw materials to the sulfuric acid solution is 1: 13;

cooking raw materials: putting the pretreated raw material into a sodium hydroxide solution for primary cooking, wherein the concentration of the sodium hydroxide solution is 10g/L, the cooking temperature is 90 ℃, the cooking time is 2h, the weight ratio of the raw material to the sodium hydroxide solution is 1:13, then washing with water, after washing, putting the raw material into a mixed solution of sodium hydroxide, sodium polyphosphate and water glass for secondary cooking, wherein in the secondary cooking, the weight ratio of the mixed solution of the sodium hydroxide, the sodium polyphosphate and the water glass to the raw material is 13:1, the concentration of the sodium hydroxide is 12g/L, the sodium polyphosphate accounts for 5 percent of the mixed solution, the water glass accounts for 8 percent of the mixed solution, the cooking temperature is 100 ℃, the cooking time is 1h, and washing with water after the secondary cooking is finished;

beating fibers and bleaching: putting the cooked raw materials into a fiber beating machine for beating fibers, then carrying out acid pickling in a sulfuric acid solution with the concentration of 3.2g/L, then bleaching in hydrogen peroxide with the concentration of 6g/L, then carrying out water washing, and dewatering to remove excessive water after the water washing is finished;

pulping and blending: pulping in a pulping machine, wherein the pulping concentration is 5%, the beating degree is 28 DEG SR, and then adding a wet strength agent, a waterproof agent and aluminum sulfate for size mixing, wherein the using amount of the wet strength agent is 4% of the using amount of the bamboo shoot shell, the using amount of the waterproof agent is 2% of the using amount of the bamboo shoot shell, and the using amount of the aluminum sulfate is 2% of the using amount of the bamboo shoot shell, so that a pulp is obtained;

and (3) pressing a finished product: and (3) pressing and forming the slurry, then carrying out sterilization treatment, and carrying out shaping and edge cutting after the sterilization treatment is finished to obtain a finished product.

Example 5

The embodiment provides a bamboo shoot shell fiber lunch box, which is prepared by the following steps:

pretreatment of raw materials: sterilizing 2000g of bamboo shoot shell at 95 ℃, kneading the bamboo shoot shell in a fiber kneading machine to remove impurities, and then pickling the bamboo shoot shell in 1.2g/L sulfuric acid solution at 45 ℃ for 60min, wherein the weight ratio of the raw materials to the sulfuric acid solution is 1: 15;

cooking raw materials: putting the pretreated raw material into a sodium hydroxide solution for primary cooking, wherein the concentration of the sodium hydroxide solution is 10g/L, the cooking temperature is 95 ℃, the cooking time is 2h, the weight ratio of the raw material to the sodium hydroxide solution is 1:15, then washing with water, after washing, putting the raw material into a mixed solution of sodium hydroxide, sodium polyphosphate and water glass for secondary cooking, wherein in the secondary cooking, the weight ratio of the mixed solution of the sodium hydroxide, the sodium polyphosphate and the water glass to the raw material is 15:1, the concentration of the sodium hydroxide is 15g/L, the sodium polyphosphate accounts for 5 percent of the mixed solution, the water glass accounts for 8 percent of the mixed solution, the cooking temperature is 95 ℃, the cooking time is 1.5h, and washing with water after the secondary cooking is finished;

beating fibers and bleaching: putting the cooked raw materials into a fiber beating machine for beating fibers, then carrying out acid pickling in a sulfuric acid solution with the concentration of 3g/L, then bleaching in hydrogen peroxide with the concentration of 6g/L, then carrying out water washing, and dewatering to remove excessive moisture after the water washing is finished;

pulping and blending: pulping in a pulping machine, wherein the pulping concentration is 5%, the beating degree is 30 DEG SR, and then adding a wet strength agent, a waterproof agent and aluminum sulfate for size mixing, wherein the using amount of the wet strength agent is 2% of the using amount of the bamboo shoot shell, the using amount of the waterproof agent is 3% of the using amount of the bamboo shoot shell, and the using amount of the aluminum sulfate is 2% of the using amount of the bamboo shoot shell, so that a pulp is obtained;

and (3) pressing a finished product: and (3) pressing and forming the slurry, then carrying out sterilization treatment, and carrying out shaping and edge cutting after the sterilization treatment is finished to obtain a finished product.

Test examples

The bamboo shoot shell fiber lunch boxes of examples 1-5 of the present invention were subjected to performance tests, and the test results are shown in table 1:

TABLE 1

According to the test results, the bamboo shoot shell fiber lunch box provided by the invention has the advantages that the safety performance of all the strengths meets the indexes, the bamboo shoot shell fiber lunch box is water-resistant and oil-resistant, the product strength is high, and the bamboo shoot shell fiber lunch box is safe and environment-friendly.

In summary, the bamboo shoot shell fiber lunch box and the manufacturing process thereof provided by the embodiments of the present invention have the advantages that the bamboo shoot shell is used as the main raw material of the lunch box, so that the environmental protection safety of the product lunch box can be effectively improved, and meanwhile, the bamboo shoot shell waste can be recycled, so that the present invention is low-carbon and environment-friendly, and can save resources and protect the environment; the wet strength agent can effectively enhance the wet strength performance of the product lunch box and improve the strength of the product lunch box; the waterproof agent can effectively enhance the water resistance of the product lunch box, thereby further improving the use strength of the product lunch box; the aluminum sulfate can further enhance the water resistance and seepage resistance of the product lunch box. Such bamboo shoot shell fibre cutlery box, not only safe environmental protection can carry out recycle with bamboo shoot shell waste material again, helps practicing thrift the cost, saves the resource, the environmental protection.

The manufacturing process comprises the steps of firstly sterilizing the bamboo shoot shell raw material through the raw material and the processing steps to eliminate harmful strains, then kneading and removing impurities through a fiber kneading machine to remove useless impurities in the raw material and improve the purity of the raw material, and then pickling in a sulfuric acid solution to soften the raw material so as to be smoothly carried out in the subsequent steps. Then, the raw material cooking step is carried out, the raw material is firstly placed into a sodium hydroxide solution for primary cooking, impurities and outer pectin in the raw material are further removed, lignin and cellulose are separated, and a certain bleaching effect can be achieved; washing after the primary cooking is finished, washing to remove attached cooking solution, and then putting into a mixed solution of sodium hydroxide, sodium polyphosphate and water glass for secondary cooking, wherein the sodium polyphosphate can improve the strength of raw material fibers, and the water glass can play a role of a buffering agent and has an auxiliary bleaching effect; and the attached cooking solution is removed by washing after the secondary cooking, so that the purity of the raw material fiber is improved, and the subsequent steps are ensured to be smoothly carried out. Then beating fibers of the raw materials through the fiber beating and bleaching steps, and then carrying out acid washing in a sulfuric acid solution, so that the purity and strength performance of the raw material fibers are improved, redundant impurities are further washed away, and the pH environment is adjusted through the acid washing, so that the subsequent bleaching effect is improved; then bleaching in hydrogen peroxide, washing with water to remove attached solution, dewatering to remove excessive water, and further improving the purity of the raw material fiber. And then pulping is carried out through the pulping and blending steps, the strength performance of the raw material fiber can be improved, and the wet strength performance and the waterproof and anti-seepage performance of the product lunch box can be further improved by adding the wet strength agent, the waterproof agent and the aluminum sulfate, so that the quality of the product lunch box is improved. And finally, pressing and forming the slurry through the finished product pressing step, then sterilizing and eliminating harmful strains, and shaping and cutting edges to obtain the finished product. Whole preparation process flow is simple, can carry out recycle to abandonment bamboo shoot shell resource, helps reduce cost, and the cutlery box of coproduction is safe environmental protection, can save the resource, the environmental protection.

The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.