CN113480866A

CN113480866A - Fully degradable disposable tableware and preparation method thereof

Info

Publication number: CN113480866A
Application number: CN202110782492.4A
Authority: CN
Inventors: 杨良浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2021-10-08

Abstract

The invention relates to the technical field of disposable tableware, in particular to fully-degradable disposable tableware and a preparation method thereof. The tableware comprises the following raw materials in parts by weight: 30-60 parts of coffee grounds, 2-10 parts of gelling agent, 10-15 parts of forming agent, 10-15 parts of thickening agent, 3-10 parts of water-retaining agent and 15-20 parts of plasticizer. The fully degradable disposable tableware is prepared by taking coffee grounds as main raw materials, so that the problem that a large amount of coffee grounds are difficult to treat is solved; on the other hand, the production cost of the disposable tableware is saved. The tableware prepared by the invention is natural coffee, has coffee aroma and is more suitable for people to eat; easy decomposition in water, environment-friendly and pollution-free.

Description

Fully degradable disposable tableware and preparation method thereof

Technical Field

The invention relates to the technical field of disposable tableware, in particular to fully-degradable disposable tableware and a preparation method thereof.

Background

The disposable dinner plate used at present mainly comprises two main products, one is made of paper products; one type is made of plastic. The paper tableware needs a large amount of wood for manufacturing, the cost is high, and the availability is low; plastic tableware is often difficult to degrade and easily causes environmental pollution. With the increasing use of disposable tableware, the environmental problems associated with disposable tableware have also become increasingly important.

The key to solve the problems is to find a disposable tableware which is green, environment-friendly and low in production cost. Coffee is a favorite beverage for the world, and the consumption amount of the coffee is increased every year, so that a large amount of coffee grounds are generated. The treatment of the coffee grounds still remains extensive landfill treatment, which wastes a large amount of resources and poses certain threats to the ecological environment.

Disclosure of Invention

The invention mainly aims to provide a fully degradable disposable tableware and a preparation method thereof. The disposable tableware prepared by taking the coffee grounds as the main raw materials has higher hardness, is easy to decompose when meeting water, is environment-friendly and has no pollution.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a fully degradable disposable tableware, which comprises the following raw materials in parts by weight: 30-60 parts of coffee grounds, 2-10 parts of gelling agent, 10-15 parts of forming agent, 10-15 parts of thickening agent, 3-10 parts of water-retaining agent and 15-20 parts of plasticizer.

Further, the water content of the coffee grounds is less than 15%; the particle size is 80-100 meshes.

Further, the gel consists of gelatin and xanthan gum according to a weight ratio of 1-5: 1-5.

Further, the forming agent comprises one or more of glutinous rice flour, starch and gypsum powder;

furthermore, the forming agent is prepared from glutinous rice flour, starch and gypsum powder in a weight ratio of 5-7: 3-5: 2-3.

Further, the thickening agent comprises one or more of modified starch, hydroxypropyl methyl cellulose and sodium polyacrylate;

furthermore, the thickening agent is composed of modified starch, hydroxypropyl methyl cellulose and sodium polyacrylate according to a weight ratio of 5-8: 3-4: 2-3.

Further, the water retention agent comprises one or two of polyvinyl alcohol and sorbitol;

furthermore, the water-retaining agent is composed of polyvinyl alcohol and sorbitol according to a weight ratio of 2-5: 1-5.

Further, the plasticizer includes glycerin, vegetable oil and water.

Furthermore, the plasticizer is composed of glycerol, vegetable oil and water according to the weight ratio of 1-3: 1-2: 13-15.

The invention also provides a preparation method of the tableware, which comprises the following steps:

weighing the raw materials in proportion, and stirring and mixing; rolling the stirred raw materials into a blank cake, and stamping into a geometric blank; and (5) placing the mixture into a mold for shaping, cooling and drying to obtain the product.

Further, setting temperature is 100-150 ℃, and setting time is 15-30 min; the cooling temperature is 0-4 ℃, and the cooling time is 5-10 min.

Further, in the drying process, pre-drying is carried out for 10-20 min in an air-cooled dryer, and then drying is carried out for 24-48 h at room temperature.

Compared with the prior art, the invention has the following advantages:

the fully degradable disposable tableware is prepared by taking coffee grounds as main raw materials, so that the problem that a large amount of coffee grounds are difficult to treat is solved; on the other hand, the production cost of the disposable tableware is saved. The tableware prepared by the invention is natural coffee, has coffee aroma and is more suitable for people to eat.

The tableware obtained by the invention is easy to decompose when meeting water, is environment-friendly and has no pollution. The tableware of the invention can be recycled after being used, and can be made into feed or fertilizer after being crushed, thus being a green and environment-friendly product.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, and/or combinations thereof, unless the context clearly indicates otherwise.

In order to make the technical solutions of the present invention more clearly understood by those skilled in the art, the technical solutions of the present invention will be described in detail below with reference to specific embodiments.

Example 1

A method for preparing fully degradable disposable tableware comprises the following steps:

step 1, screening coffee grounds with the particle size of 100 meshes, drying and sterilizing the coffee grounds at high temperature to enable the water content of the coffee grounds to be below 15%.

Step 2, batching: weighing the following raw materials in parts by weight:

45 parts of coffee grounds, 3 parts of gelatin powder, 4 parts of xanthan gum, 7 parts of glutinous rice flour, 5 parts of starch, 3 parts of gypsum, 3 parts of hydroxypropyl methyl cellulose, 2 parts of sodium polyacrylate, 5 parts of modified starch, 3 parts of polyvinyl alcohol, 2 parts of sorbitol, 2 parts of glycerol, 1 part of vegetable oil and 15 parts of water.

And 3, stirring, namely adding the selected raw materials into a stirrer and stirring to form a dough.

And 4, profiling, namely putting the stirred material mass into a rolling device to be pressed into a blank cake of 1 mm.

And 5, molding, namely stamping the circular blank of 120 mm by using a stamping die.

And 6, shaping, namely putting the blank into a shaping die, and then putting the die into high-temperature equipment for shaping, wherein the temperature is set to be 120 ℃, and the shaping time is 20 min.

And 7, cooling at 0 ℃ for 5 min.

And 8, drying, opening the mold, taking out the dinner plate, putting the dinner plate into an air-cooled dryer for pre-drying for 10 minutes, and then putting the dinner plate into a drying chamber for natural drying for 24 hours to obtain a finished product.

Example 2

step 1, screening coffee grounds with the particle size of 80 meshes, drying and sterilizing the coffee grounds at high temperature to enable the water content of the coffee grounds to be below 15%.

Step 2, batching: weighing the following raw materials in parts by weight:

30 parts of coffee grounds, 5 parts of gelatin powder, 5 parts of xanthan gum, 7 parts of glutinous rice flour, 5 parts of starch, 3 parts of gypsum, 4 parts of hydroxypropyl methyl cellulose, 3 parts of sodium polyacrylate, 8 parts of modified starch, 5 parts of polyvinyl alcohol, 5 parts of sorbitol, 3 parts of glycerol, 2 parts of vegetable oil and 15 parts of water.

And 6, shaping, namely putting the blank into a shaping mold, and then putting the mold into high-temperature equipment for shaping, wherein the temperature is set to be 150 ℃, and the shaping time is 15 min.

And 7, cooling at 4 ℃ for 10 min.

And 8, drying, opening the mold, taking out the dinner plate, putting the dinner plate into an air-cooled dryer for pre-drying for 20 minutes, and then putting the dinner plate into a drying chamber for natural drying for 24 hours to obtain a finished product.

Example 3

Step 2, batching: weighing the following raw materials in parts by weight:

60 parts of coffee grounds, 2 parts of gelatin powder, 6 parts of glutinous rice powder, 2 parts of starch, 2 parts of gypsum, 7 parts of hydroxypropyl methyl cellulose, 3 parts of sodium polyacrylate, 2 parts of polyvinyl alcohol, 1 part of sorbitol, 1 part of glycerol, 1 part of vegetable oil and 13 parts of water.

And 4, profiling, namely putting the stirred dough into a rolling device to be pressed into a blank cake of 3 mm.

And 6, shaping, namely putting the blank into a shaping die, and then putting the die into high-temperature equipment for shaping, wherein the temperature is set to be 100 ℃, and the shaping time is 25 min.

And 7, cooling at 4 ℃ for 10 min.

Comparative example 1

The method for preparing the fully degradable disposable tableware was different from that of example 3 in that 70 parts by weight of coffee grounds were used, and the rest was the same as in example 3.

Test examples

1) Weight bearing test

The weight-bearing test is carried out according to the method of GB/T18006.1-2009 general technical requirements of disposable plastic tableware:

the load bearing properties of each set of cutlery are shown in table 1 below.

TABLE 1 weight-bearing Properties of the tableware sets

2) Drop performance

The drop performance test is carried out according to the method of GB/T18006.1-2009 general technical requirements for disposable plastic tableware:

the tableware of each group of examples 1 to 3 is intact and falls freely with the bottom facing downwards at the height of 1m from the ground.

3) Hydrolysis test

And (3) soaking each group of tableware in normal-temperature water, setting an observation time point, and stirring for one minute by using a stirring rod before observation to ensure that the sample can be continuously disintegrated. The disintegration rate was described by observing only the area of the largest of the remaining pieces at a time as a few percent of the original area. The hydrolysis of the dishes in each group is shown in Table 2 below.

TABLE 2 hydrolysis Performance of the tableware groups

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims

1. A full-degradable disposable tableware is characterized by comprising the following raw materials in parts by weight: 30-60 parts of coffee grounds, 2-10 parts of gelling agent, 10-15 parts of forming agent, 10-15 parts of thickening agent, 3-10 parts of water-retaining agent and 15-20 parts of plasticizer.

2. The tableware according to claim 1, characterized in that the water content of the coffee grounds is less than 15%; the particle size is 80-100 meshes.

3. The tableware according to claim 1, wherein the gelling agent is composed of gelatin and xanthan gum in a weight ratio of 1-5: 1-5.

4. The tableware according to claim 1, wherein the forming agent comprises one or more of glutinous rice flour, starch and gypsum powder;

preferably, the forming agent consists of glutinous rice flour, starch and gypsum powder according to a weight ratio of 5-7: 3-5: 2-3.

5. The tableware according to claim 1, wherein the thickener comprises one or more of modified starch, hydroxypropyl methylcellulose and sodium polyacrylate;

preferably, the thickening agent consists of modified starch, hydroxypropyl methyl cellulose and sodium polyacrylate according to the weight ratio of 5-8: 3-4: 2-3.

6. The tableware according to claim 1, wherein the water retention agent comprises one or two of polyvinyl alcohol and sorbitol;

preferably, the water-retaining agent consists of polyvinyl alcohol and sorbitol in a weight ratio of 2-5: 1-5.

7. The tableware of claim 1, wherein the plasticizer comprises glycerin, vegetable oil and water;

preferably, the plasticizer consists of glycerol, vegetable oil and water in a weight ratio of 1-3: 1-2: 13-15.

8. A method of making cutlery as claimed in any of claims 1 to 7, comprising the steps of:

9. The preparation method according to claim 8, wherein the setting temperature is 100-150 ℃ and the setting time is 15-30 min; the cooling temperature is 0-4 ℃, and the cooling time is 5-10 min.

10. The preparation method according to claim 8, wherein in the drying process, the pre-drying is carried out in an air-cooled dryer for 10-20 min, and then the drying is carried out for 24-48 h at room temperature.