CN112226096A - Novel degradable disposable lunch box material and preparation method thereof - Google Patents
Novel degradable disposable lunch box material and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C11/00—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
- A45C11/20—Lunch or picnic boxes or the like
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/324—Alkali metal phosphate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a novel degradable disposable lunch box material and a preparation method thereof, wherein the degradable disposable lunch box material comprises the following raw materials in parts by weight: 30-36 parts of plant fiber, 10-25 parts of corn starch, 9-16 parts of seaweed gel, 9-18 parts of konjac glucomannan, 0.9-1.7 parts of starch cross-linking agent, 1-3 parts of auxiliary agent and 35-55 parts of deionized water; the preparation method comprises the following steps: (1) weighing enough raw materials; (2) pretreating plant fibers; (3) crushing plant fibers; (4) preparing an auxiliary agent; (5) mixing the raw materials; (6) extruding and granulating; the disposable tableware is mainly prepared by using plant fibers as raw materials, does not release toxic substances, is easy to recover and degrade, has high use safety, is harmless to human bodies and the environment, has simple preparation process and low raw material cost, and can be produced in large scale.
Description
Technical Field
The invention relates to the field of disposable lunch box manufacturing, in particular to a novel degradable disposable lunch box material and a preparation method thereof.
Background
With the improvement of living standard of people, people often use various disposable living goods, and the permeability of the disposable living goods in China is far higher than that in the first-line city and the third-line city and rural areas. The foamed plastic disposable tableware commonly used in life is difficult to recycle after being discarded; harmful chemical substances in the raw materials are dissolved out at high temperature, and the raw materials are unsafe to use and can cause cancer seriously; not easy to degrade and pollute the environment.
A large amount of industrial-grade calcium carbonate, talcum powder, paraffin and other toxic and harmful materials are added into commonly used disposable tableware, and the direct threat to the health of users is formed. Some of the food boxes are also products containing a large amount of inorganic mineral fillers such as talcum powder or calcium carbonate, and a small amount of tableware made of waste plastics or waste paper is more harmful. In order to protect the health of people, the raw materials of disposable tableware need to be adjusted, and a degradable disposable lunch box material which is environment-friendly, pollution-free and harmless to human bodies is developed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a novel degradable disposable lunch box material and a preparation method thereof, so that chemical substances harmful to human bodies can not be released in the using process of people, and the degradable disposable lunch box material is environment-friendly, pollution-free and easy to degrade.
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
a novel degradable disposable lunch box material and a preparation method thereof are characterized by comprising the following raw materials in parts by weight: 30-36 parts of plant fiber, 10-25 parts of corn starch, 9-16 parts of seaweed gel, 9-18 parts of konjac glucomannan, 0.9-1.7 parts of starch cross-linking agent, 1-3 parts of auxiliary agent and 35-55 parts of deionized water; the auxiliary agent comprises the following raw materials in parts by weight: 0.7-1.8 parts of bacteriostatic agent, 1-3 parts of antioxidant, 0.8-2.8 parts of heat-resistant agent and 0.3-1.2 parts of thickening agent.
Further, the feed comprises the following raw materials in parts by weight: 28 parts of plant fiber, 19 parts of corn starch, 9 parts of seaweed gel, 14 parts of konjac glucomannan, 1.5 parts of starch cross-linking agent, 2 parts of auxiliary agent and 48 parts of deionized water; the auxiliary agent comprises the following raw materials in parts by weight: 1.1 parts of bacteriostatic agent, 2.4 parts of antioxidant, 1.9 parts of heat-resistant agent and 0.7 part of thickening agent.
Further, the starch cross-linking agent is formed by mixing sodium trimetaphosphate and 28 wt% barium hydroxide solution according to a ratio of 1:4.
Further, the plant fiber is one or a mixture of more of bamboo fiber, straw fiber, seed fiber, fruit fiber and leaf fiber.
Further, the bacteriostatic agent is composed of potassium sorbate or a mixture of sorbic acid and ethanol according to a mass ratio of 1: 2.6.
Further, the antioxidant is formed by mixing citric acid and potassium citrate according to a mass ratio of 3: 2.
Further, the heat-resistant agent is one or combination of several of sodium carboxymethyl cellulose, xanthan gum and konjac powder.
Still further, the thickener is one or a combination of more of propylene glycol ester of seaweed, hydroxymethyl cellulose calcium, sodium starch phosphate and sodium starch glycolate.
Still further, the preparation method of the novel degradable disposable lunch box material comprises the following steps:
(1) weighing enough raw materials: weighing the raw materials according to the weight parts of the raw materials of the novel degradable disposable tableware material;
(2) pre-treating plant fibers: soaking plant fiber in nitric acid solution for 2-3 hr for disinfection, washing with clear water, dewatering, oven drying to reduce water content to below 8%;
(3) crushing plant fibers: putting the plant fiber dried in the step (2) into a crusher to crush the particle size to 400-650 meshes to obtain plant fiber powder for later use;
(4) preparing an auxiliary agent: putting the bacteriostatic agent, the antioxidant, the heat-resistant agent and the thickening agent into a container, mixing, adding a small amount of water, and stirring at the speed of 600-1000 revolutions per minute for 10-25 minutes to obtain the auxiliary agent for later use;
(5) mixing raw materials: stirring and mixing plant fiber, corn starch, seaweed gel, konjac glucomannan, starch cross-linking agent, auxiliary agent and deionized water, heating to 45-55 ℃, stirring for 2-3 hours, and uniformly mixing to obtain a mixed material for later use;
(6) and (3) extruding and granulating: and (4) feeding the mixed material prepared in the step (5) into a double-screw extruder for extrusion granulation, and drying and dehydrating the granules to obtain the novel degradable disposable tableware material.
Compared with the prior art, the invention has the beneficial effects that: the disposable tableware is prepared by using the plant fiber as the raw material, does not release toxic substances, is easy to recover and degrade, has high use safety, is harmless to human bodies and the environment, and has the advantages of simple preparation process, easy operation, low raw material cost and good market application prospect; the bacteriostatic agent is added into the raw materials, and the potassium sorbate is a food-grade bacteriostatic agent, so that the breeding of bacteria can be effectively inhibited, and the cleanness and sanitation of the disposable tableware material are ensured, and the disposable tableware material is harmless to human bodies; the heat-resistant agent and the antioxidant are added into the raw materials, so that the stability of the materials is improved, no chemical substance is dissolved and released when the disposable tableware is used at high temperature, and the disposable tableware can be safely used; the invention has the advantages that the seaweed gel and the konjac glucomannan are added into the raw materials, the seaweed gel and the konjac glucomannan are natural binding agents, do not contain any toxic and harmful substances, have good binding property, stabilize all materials in the binding material and have stable material internal structure; the degradable disposable tableware material can be recycled and crushed as a field soil fertilizer after being used by people, so that the physical and chemical structure of soil is improved, and the degradable disposable tableware material can be recycled.
Detailed Description
The present invention is further illustrated by the following examples, which should not be construed as limiting the scope of the invention.
Example 1: a novel degradable disposable lunch box material and a preparation method thereof comprise the following raw materials in parts by weight: 32 parts of plant fiber, 19 parts of corn starch, 13 parts of seaweed gel, 12 parts of konjac glucomannan, 1.3 parts of starch cross-linking agent, 2 parts of auxiliary agent and 48 parts of deionized water; the auxiliary agent comprises the following raw materials in parts by weight: 0.9 part of bacteriostatic agent, 2 parts of antioxidant, 1.5 parts of heat-resistant agent and 1.1 parts of thickening agent.
The starch cross-linking agent is formed by mixing sodium trimetaphosphate and 26 wt% barium hydroxide solution according to a ratio of 1: 3.7.
The plant fiber is a mixture of bamboo fiber, straw fiber, fruit fiber and leaf fiber.
The bacteriostatic agent is composed of potassium sorbate or mixture of sorbic acid and ethanol according to the mass ratio of 1: 2.4.
The antioxidant is formed by mixing citric acid and potassium citrate according to a mass ratio of 3: 2.
The heat-resistant agent is a mixture of sodium carboxymethyl cellulose, xanthan gum and konjac powder.
The thickening agent is a mixture of propylene glycol ester of seaweed, hydroxymethyl fibrous calcium and sodium starch phosphate.
A preparation method of a novel degradable disposable lunch box material comprises the following steps:
(1) weighing enough raw materials: weighing the raw materials according to the weight parts of the raw materials of the novel degradable disposable tableware material;
(2) pre-treating plant fibers: soaking plant fiber in nitric acid solution for 2-3 hr for disinfection, washing with clear water, dewatering, oven drying to reduce water content to below 8%;
(3) crushing plant fibers: putting the plant fiber dried in the step (2) into a crusher to crush the particle size to 430-550 meshes to obtain plant fiber powder for later use;
(4) preparing an auxiliary agent: adding the bacteriostatic agent, the antioxidant, the heat-resistant agent and the thickening agent into a container, mixing, adding a small amount of water, and stirring at the speed of 800 revolutions per minute for 10-25 minutes to obtain an auxiliary agent for later use;
(5) mixing raw materials: stirring and mixing plant fiber, corn starch, seaweed gel, konjac glucomannan, starch cross-linking agent, auxiliary agent and deionized water, heating to 45-55 ℃, stirring for 2-3 hours, and uniformly mixing to obtain a mixed material for later use;
(6) and (3) extruding and granulating: and (4) feeding the mixed material prepared in the step (5) into a double-screw extruder for extrusion granulation, and drying and dehydrating the granules to obtain the novel degradable disposable tableware material.
Example 2: a novel degradable disposable lunch box material and a preparation method thereof comprise the following raw materials in parts by weight: 33 parts of plant fiber, 22 parts of corn starch, 14 parts of seaweed gel, 16 parts of konjac glucomannan, 1.2 parts of starch cross-linking agent, 3 parts of auxiliary agent and 52 parts of deionized water; the auxiliary agent comprises the following raw materials in parts by weight: 1.7 parts of bacteriostatic agent, 3 parts of antioxidant, 2.3 parts of heat-resistant agent and 0.8 part of thickening agent.
The starch cross-linking agent is formed by mixing sodium trimetaphosphate and 27 wt% barium hydroxide solution according to a ratio of 1: 4.2.
The plant fiber is a mixture of bamboo fiber, straw fiber and leaf fiber.
The bacteriostatic agent is composed of potassium sorbate or mixture of sorbic acid and ethanol according to the mass ratio of 1: 2.8.
The antioxidant is formed by mixing citric acid and potassium citrate according to a mass ratio of 3: 2.
The heat-resistant agent is a mixture of sodium carboxymethyl cellulose, xanthan gum and konjac powder.
The thickener is a mixture of propylene glycol ester of seaweed, hydroxymethyl fibrous calcium and sodium starch glycolate.
A preparation method of a novel degradable disposable lunch box material comprises the following steps:
(1) weighing enough raw materials: weighing the raw materials according to the weight parts of the raw materials of the novel degradable disposable tableware material;
(2) pre-treating plant fibers: soaking plant fiber in nitric acid solution for 2-3 hr for disinfection, washing with clear water, dewatering, oven drying to reduce water content to below 7%;
(3) crushing plant fibers: putting the plant fiber dried in the step (2) into a crusher to crush the particle size to 570-620 meshes to obtain plant fiber powder for later use;
(4) preparing an auxiliary agent: adding the bacteriostatic agent, the antioxidant, the heat-resistant agent and the thickening agent into a container, mixing, adding a small amount of water, and stirring at the speed of 700 revolutions per minute for 12-18 minutes to obtain an auxiliary agent for later use;
(5) mixing raw materials: stirring and mixing plant fiber, corn starch, seaweed gel, konjac glucomannan, starch cross-linking agent, auxiliary agent and deionized water, heating to 45-50 ℃, stirring for 2-3 hours, and uniformly mixing to obtain a mixed material for later use;
(6) and (3) extruding and granulating: and (4) feeding the mixed material prepared in the step (5) into a double-screw extruder for extrusion granulation, and drying and dehydrating the granules to obtain the novel degradable disposable tableware material.
Example 3: a novel degradable disposable lunch box material and a preparation method thereof comprise the following raw materials in parts by weight: 35 parts of plant fiber, 21 parts of corn starch, 11 parts of seaweed gel, 16 parts of konjac glucomannan, 1.4 parts of starch cross-linking agent, 2 parts of auxiliary agent and 47 parts of deionized water; the auxiliary agent comprises the following raw materials in parts by weight: 1.6 parts of bacteriostatic agent, 2 parts of antioxidant, 2.7 parts of heat-resistant agent and 0.8 part of thickening agent.
The starch cross-linking agent is formed by mixing sodium trimetaphosphate and 31 wt% barium hydroxide solution according to a ratio of 1: 3.8.
The plant fiber is one of bamboo fiber, straw fiber, seed fiber, fruit fiber and leaf fiber.
The bacteriostatic agent is composed of potassium sorbate or mixture of sorbic acid and ethanol according to the mass ratio of 1: 2.7.
The antioxidant is formed by mixing citric acid and potassium citrate according to a mass ratio of 3: 2.
The heat-resistant agent is a mixture of sodium carboxymethyl cellulose, xanthan gum and konjac powder.
The thickener is a mixture of propylene glycol ester of seaweed, hydroxymethyl fibrous calcium and sodium starch glycolate.
A preparation method of a novel degradable disposable lunch box material comprises the following steps:
(1) weighing enough raw materials: weighing the raw materials according to the weight parts of the raw materials of the novel degradable disposable tableware material;
(2) pre-treating plant fibers: soaking plant fiber in nitric acid solution for 3-4 hr for disinfection, washing with clear water, dewatering, oven drying to reduce water content to below 7%;
(3) crushing plant fibers: putting the plant fiber dried in the step (2) into a crusher to crush the particle size to 520-640 meshes to obtain plant fiber powder for later use;
(4) preparing an auxiliary agent: adding the bacteriostatic agent, the antioxidant, the heat-resistant agent and the thickening agent into a container, mixing, adding a small amount of water, and stirring at the speed of 800 revolutions per minute for 15-20 minutes to obtain an auxiliary agent for later use;
(5) mixing raw materials: stirring and mixing plant fiber, corn starch, seaweed gel, konjac glucomannan, starch cross-linking agent, auxiliary agent and deionized water, heating to 50-55 ℃, stirring for 2-3 hours, and uniformly mixing to obtain a mixed material for later use;
(6) and (3) extruding and granulating: and (4) feeding the mixed material prepared in the step (5) into a double-screw extruder for extrusion granulation, and drying and dehydrating the granules to obtain the novel degradable disposable tableware material.
The above embodiments are not limited to the above embodiments, and those skilled in the art will appreciate that the idea of the present invention and make various extensions and changes according to the above embodiments without departing from the spirit of the present invention.
Claims (9)
1. A novel degradable disposable lunch box material and a preparation method thereof are characterized by comprising the following raw materials in parts by weight:
30-36 parts of plant fiber, 10-25 parts of corn starch, 9-16 parts of seaweed gel, 9-18 parts of konjac glucomannan, 0.9-1.7 parts of starch cross-linking agent, 1-3 parts of auxiliary agent and 35-55 parts of deionized water;
the auxiliary agent comprises the following raw materials in parts by weight: 0.7-1.8 parts of bacteriostatic agent, 1-3 parts of antioxidant, 0.8-2.8 parts of heat-resistant agent and 0.3-1.2 parts of thickening agent.
2. The novel degradable disposable lunch box material and the preparation method thereof according to claim 1, characterized by comprising the following raw materials in parts by weight: 28 parts of plant fiber, 19 parts of corn starch, 9 parts of seaweed gel, 14 parts of konjac glucomannan, 1.5 parts of starch cross-linking agent, 2 parts of auxiliary agent and 48 parts of deionized water;
the auxiliary agent comprises the following raw materials in parts by weight: 1.1 parts of bacteriostatic agent, 2.4 parts of antioxidant, 1.9 parts of heat-resistant agent and 0.7 part of thickening agent.
3. The novel degradable disposable lunch box material and the preparation method thereof as claimed in claim 1, wherein the starch crosslinking agent is composed of sodium trimetaphosphate and 28 wt% barium hydroxide solution mixed according to a ratio of 1:4.
4. The novel degradable disposable lunch box material and the preparation method thereof according to claim 1, wherein the plant fiber is one or a mixture of bamboo fiber, straw fiber, seed fiber, fruit fiber and leaf fiber.
5. The novel degradable disposable lunch box material and the preparation method thereof according to claim 1, wherein the bacteriostatic agent is potassium sorbate or a mixture of sorbic acid and ethanol according to a mass ratio of 1: 2.6.
6. The novel degradable disposable lunch box material and the preparation method thereof according to claim 1, wherein the antioxidant is formed by mixing citric acid and potassium citrate according to a mass ratio of 3: 2.
7. The novel degradable disposable lunch box material and the preparation method thereof as claimed in claim 1, wherein the heat-resistant agent is one or a combination of several of sodium carboxymethylcellulose, xanthan gum and konjac powder.
8. The novel degradable disposable lunch box material and the preparation method thereof according to claim 1, wherein the thickener is one or a combination of more of propylene glycol ester of seaweed, hydroxymethyl cellulose calcium, sodium starch phosphate and sodium starch glycolate.
9. A method for preparing a novel degradable disposable lunch box material as claimed in any one of claims 1-9, comprising the steps of:
(1) weighing enough raw materials: weighing the raw materials according to the weight parts of the raw materials of the novel degradable disposable tableware material;
(2) pre-treating plant fibers: soaking plant fiber in nitric acid solution for 2-3 hr for disinfection, washing with clear water, dewatering, oven drying to reduce water content to below 8%;
(3) crushing plant fibers: putting the plant fiber dried in the step (2) into a crusher to crush the particle size to 400-650 meshes to obtain plant fiber powder for later use;
(4) preparing an auxiliary agent: putting the bacteriostatic agent, the antioxidant, the heat-resistant agent and the thickening agent into a container, mixing, adding a small amount of water, and stirring at the speed of 600-1000 revolutions per minute for 10-25 minutes to obtain the auxiliary agent for later use;
(5) mixing raw materials: stirring and mixing plant fiber, corn starch, seaweed gel, konjac glucomannan, starch cross-linking agent, auxiliary agent and deionized water, heating to 45-55 ℃, stirring for 2-3 hours, and uniformly mixing to obtain a mixed material for later use;
(6) and (3) extruding and granulating: and (4) feeding the mixed material prepared in the step (5) into a double-screw extruder for extrusion granulation, and drying and dehydrating the granules to obtain the novel degradable disposable tableware material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011132301.1A CN112226096A (en) | 2020-10-21 | 2020-10-21 | Novel degradable disposable lunch box material and preparation method thereof |
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| CN202011132301.1A CN112226096A (en) | 2020-10-21 | 2020-10-21 | Novel degradable disposable lunch box material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2608203A (en) * | 2021-06-22 | 2022-12-28 | China Yunhong Holdings Co Ltd | Method for preparing low-cost fully-biodegradable plant fiber starch tableware |
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| CN106336676A (en) * | 2016-08-24 | 2017-01-18 | 安徽顺彤包装材料有限公司 | Degradable breakfast cake packaging material and preparation method thereof |
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| GB2608203A (en) * | 2021-06-22 | 2022-12-28 | China Yunhong Holdings Co Ltd | Method for preparing low-cost fully-biodegradable plant fiber starch tableware |
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Application publication date: 20210115 |