Disposable degradable plant fiber tableware and preparation method thereof

A technology of plant fiber and plant fiber powder is applied in the directions of plate, application, clothing, etc., to achieve the effects of reducing harm to human body, good ecological circulation effect and low preparation cost

Inactive Publication Date: 2019-02-22

席小兵

4 Cites 12 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide a kind of degradable plant fiber disposable tableware and its preparation method, this degradable plant fiber disposable tableware degrades fast in spontaneous combustion environment, soaks in the soil and can also become the fertilizer of pl...

Method used

(3) mixing and dissolving: add appropriate amount of water in the batching tank with stirring device and heating device, be warming up to 40 ℃, while stirring, carboxymethyl cellulose is sprinkled slowly and evenly in the batching tank, Stir at a slow speed for 8 minutes to completely dissolve carboxymethyl cellulose and water, so as to prevent carboxymethyl cellulose from agglomerating and agglomerating when meeting water, reduce the dissolved amount of carboxymethyl cellulose, and increase the carboxymethyl cellulose Then add finely mixed plant fiber powder, polyvinyl alcohol powder and modified starch, heat up to 75°C, and stir for 25 minutes to obtain a mixed slurry;...

Abstract

The invention provides disposable degradable plant fiber tableware and a preparation method thereof. The disposable tableware is prepared from the following raw materials in parts by weight: 90-100 parts of plant fibers, 20-30 parts of polyvinyl alcohol, 10-15 parts of modified starch, 4-8 parts of modified calcium carbonate powder, 20-40 parts of waterproof glue and 6-10 parts of carboxymethylcellulose. The preparation method comprises the following steps: crushing, grinding, mixing and dissolving, forming, gluing, drying and disinfecting the components to obtain a product. The disposable degradable plant fiber tableware is non-toxic and harmless and clean and sanitary. The preparation process is environment-friendly and pollution-free. The disposable degradable plant fiber tableware is high in degrading speed in a spontaneous combustion environment, and can be recycled if being immersed into soil as a fertilizer for plants. The disposable degradable plant fiber tableware are easily available and cheap in source of raw materials and regenerative, agricultural resources are comprehensively utilized favorably, and meanwhile, the air pollution problem caused by crop straw combustionis also alleviated, and the white pollution problem caused by use of a plastic product in a large range can be also alleviated effectively.

Application Domain

Other accessoriesPlates

Technology Topic

FertilizerChemistry +12

Image

Examples

Experimental program(3)

Example Embodiment

[0032] Example 1

[0033] A degradable vegetable fiber disposable lunch box is made from the following raw materials by weight: 90 parts of vegetable fibers, 20 parts of polyvinyl alcohol, 15 parts of modified starch, 5 parts of modified calcium carbonate powder, and 25 parts of waterproof glue , 8 parts of carboxymethyl cellulose.

[0034] The plant fibers are derived from corn stalks and wheat stalks, which are combined in a ratio of 2:1:.

[0035] The modified starch is a combination of modified potato starch and cassava modified starch in a ratio of 1:5.

[0036] The modified calcium carbonate powder is a white powder prepared by surface activation of heavy calcium carbonate or light calcium carbonate, and the particle size is less than or equal to 0.1um.

[0037] The waterproof adhesive is made of melamine formaldehyde resin, xanthan gum, and calcium chloride in a ratio of 1:0.3:0.1.

[0038] The above-mentioned degradable vegetable fiber disposable tableware, its preparation method comprises the following steps:

[0039] (1) Pulverization: After drying the corn stalks and wheat stalks, put them into a pulverizer for preliminary pulverization to a particle size of 100 meshes, and then use an ultrafine pulverizer to pulverize to a strength of 200 meshes to obtain mixed plant fiber powder;

[0040] (2) Grinding: Add modified calcium carbonate powder to the mixed plant fiber powder, put it into an ultrafine pulverizer and grind for 30 minutes to obtain a finely mixed plant fiber powder with a particle size of 300 meshes;

[0041](3) Mixing and dissolving: Add an appropriate amount of water to the batching tank with a stirring device and a heating device, raise the temperature to 50 °C, slowly and evenly sprinkle the carboxymethyl cellulose into the batching tank while stirring, and stir at a slow speed. 5min, then add finely mixed plant fiber powder, polyvinyl alcohol powder and modified starch, heat up to 80°C, and stir for 20min to obtain a mixed slurry;

[0042] (4) Forming: inject the above mixed slurry into the lunch box mold, pressurize it to form, the forming temperature is 170-180 ° C, the pressure is 140 MPa, and the time is 25 minutes to make a lunch box blank;

[0043] (5) Gluing: apply a layer of waterproof glue on the rough surface of the lunch box with a thickness of 0.2mm;

[0044] (6) Drying: drying in hot drying air at 85-90℃, drying time is 2h;

[0045] (7) Disinfection, the finished product is obtained.

Example Embodiment

[0046] Example 2

[0047] A degradable vegetable fiber disposable dish, made from the following raw materials by weight: 100 parts of vegetable fibers, 25 parts of polyvinyl alcohol, 10 parts of modified starch, 5 parts of modified calcium carbonate powder, and 28 parts of waterproof glue , 6 parts of carboxymethyl cellulose.

[0048] The plant fiber is derived from corn stalks and wheat stalks in a ratio of 1:0.5.

[0049] Described modified starch is modified potato starch, cassava modified starch prepared according to 1:8.

[0050] The modified calcium carbonate powder is a white powder prepared by the surface activation of heavy calcium carbonate or light calcium carbonate, and the particle size is less than or equal to 0.1um;

[0051] The waterproof adhesive is made of melamine formaldehyde resin, xanthan gum, and calcium chloride according to 1:0.35:0.12.

[0052] The above-mentioned degradable vegetable fiber disposable tableware, its preparation method comprises the following steps:

[0053] (1) Pulverization: After drying the corn stalks and wheat straws, put them into a pulverizer for preliminary pulverization to a particle size of 100 meshes, and then pulverize them with an ultrafine pulverizer to a strength of 180-200 meshes to obtain mixed plant fiber powder. ;

[0054] (2) Grinding: Add modified calcium carbonate powder to the mixed plant fiber powder, put it into an ultrafine pulverizer for grinding for 30 minutes, and obtain a finely mixed plant fiber powder with a particle size of 350 meshes;

[0055] (3) Mixing and dissolving: Add an appropriate amount of water to the batching tank with a stirring device and a heating device, raise the temperature to 45 °C, slowly and evenly sprinkle the carboxymethyl cellulose into the batching tank while stirring, and stir at a slow speed. 6min, make carboxymethyl cellulose and water completely dissolve, to prevent the occurrence of agglomeration and agglomeration when carboxymethyl cellulose meets water, reduce the amount of carboxymethyl cellulose dissolved, and improve the dissolution of carboxymethyl cellulose speed; then add finely mixed plant fiber powder, polyvinyl alcohol powder and modified starch, heat up to 85°C, and stir for 20min to obtain a mixed slurry;

[0056] (4) Forming: inject the above mixed slurry into the lunch box mold, pressurize it to form, the forming temperature is 170-180 ° C, the pressure is 130 MPa, and the time is 30 minutes, to prepare a tableware rough blank;

[0057] (5) Gluing: apply a layer of waterproof glue on the rough surface of the tableware with a thickness of 0.25mm;

[0058] (6) Drying: drying in hot drying air at 85-90℃, drying time is 2h;

[0059] (7) Disinfection, the finished product is obtained.

Example Embodiment

[0060] Example 3

[0061] A degradable vegetable fiber disposable rice bowl is made from the following raw materials in parts by weight:

[0062] 95 parts of vegetable fibers, 25 parts of polyvinyl alcohol, 12 parts of modified starch, 6 parts of modified calcium carbonate powder, 25 parts of waterproof glue, and 7 parts of carboxymethyl cellulose.

[0063] The plant fiber is prepared from corn stover and rice straw at 1:0.8.

[0064] The modified starch is prepared from modified potato starch and tapioca modified starch according to 1:5.

[0065] The modified calcium carbonate powder is a white powder prepared by the surface activation of heavy calcium carbonate or light calcium carbonate, and the particle size is less than or equal to 0.1um;

[0066] The waterproof glue is made of melamine formaldehyde resin, xanthan gum, and calcium chloride according to 1: 0.4: 0.1.

[0067] The above-mentioned degradable vegetable fiber disposable tableware, its preparation method comprises the following steps:

[0068] (1) Pulverization: After drying the corn stalks and rice stalks, put them into a pulverizer for preliminary pulverization to a particle size of 100 meshes, and then use an ultrafine pulverizer to pulverize to a strength of 200 meshes to obtain mixed plant fiber powder;

[0069] (2) Grinding: Add modified calcium carbonate powder to the mixed plant fiber powder, put it into an ultrafine pulverizer and grind for 30 minutes to obtain a finely mixed plant fiber powder with a particle size of 300 meshes;

[0070] (3) Mixing and dissolving: Add an appropriate amount of water to the batching tank with a stirring device and a heating device, raise the temperature to 40 °C, slowly and evenly sprinkle the carboxymethyl cellulose into the batching tank while stirring, and stir at a slow speed. 8min, dissolve carboxymethyl cellulose and water completely to prevent agglomeration and agglomeration when carboxymethyl cellulose meets water, reduce the amount of carboxymethyl cellulose dissolved, and improve the dissolution of carboxymethyl cellulose speed; then add finely mixed plant fiber powder, polyvinyl alcohol powder and modified starch, heat up to 75°C, and stir for 25min to obtain a mixed slurry;

[0071] (4) Forming: inject the above-mentioned mixed slurry into the lunch box mold, pressurize it to form, the forming temperature is 170 ° C, the pressure is 130 MPa, and the time is 30 min to make a tableware rough blank;

[0072] (5) Gluing: apply a layer of waterproof glue on the rough surface of the tableware with a thickness of 0.15mm;

[0073] (6) Drying: drying in hot drying air at 90℃, drying time is 2h;

[0074] (7) Disinfection, the finished product is obtained.

[0075] The degradable plant fiber disposable tableware of the present invention has various hygienic indexes that meet the technical requirements of GB 18006.1-2009, and its biodegradation performance shall meet the requirements of biodegradation performance in GB/T 20197-2006.

[0076] The degradable vegetable fiber disposable tableware of the present invention is placed under the same conditions as other disposable tableware and allowed to degrade naturally. The following table shows the comparison of the number of days required to degrade more than 85%.

[0077]

PUM

Property	Measurement	Unit
Particle size	<= 0.1	µm

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.