Production method of degradable straw pulp molded tableware

A production method and technology for tableware, which can be applied to drinking utensils, plates, clothing, etc., can solve problems such as environmental pollution, and achieve the effects of reducing production costs, reducing failure rates, and improving energy efficiency.

Active Publication Date: 2011-11-30
浙江金晟环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, a large amount of black liquor wastewater produced by non-wood fiber pulping has caused very serious pollution to the environment on which human beings depend for survival.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of production method of degradable straw pulp molded tableware comprises the following steps:

[0027] 1) Pulping process: Wheat straw is used as raw material, screened, root-cut, crushed, diluted with water at a weight ratio of 1:30, thawed, added 5Wt% hydrogen peroxide as a strong oxidant, and pressurized at 0.5MPa to obtain plant fiber pulp;

[0028] 2) Pulping process: dilute the plant fiber pulp with water until the weight ratio of the raw material to water is 1:200, decompose, and then add 5Wt% food grade water repellent acrylate and 8Wt‰ food grade oil repellent in sequence Fluoropolymer, stirring for 15 minutes, the slurry is sent to the automatic metering device of the molding machine by the pumping system, quantified 100g, and then stirred for 25 minutes to obtain the slurry for production; the food-grade oil-repellent fluoropolymer is made of perfluorocarboxylate Acid chromium complex, fluorocarbon acrylate resin, fluorocarbon sulfonamidoethyl acrylat...

Embodiment 2

[0033] A kind of production method of degradable straw pulp molded tableware comprises the following steps:

[0034] 1) Pulping process: rice straw is used as raw material, screened, root-cut, pulverized, diluted with water at a weight ratio of 1:60, thawed, and added with 5wt% H 2 o 2 As a strong oxidant, pressurize at 0.5MPa to make plant fiber pulp;

[0035] 2) Pulp mixing process: dilute the plant fiber pulp with water until the weight ratio of raw material to water is 1:160, decompose, and then add 6Wt% food-grade waterproofing agent acrylate and 7.5Wt‰ food-grade oil-proof fluoropolymer, stirred for 10 minutes, the slurry is sent to the automatic metering device of the molding machine by the pumping system, quantified 40g, and then stirred for 25 minutes to obtain the slurry for production; the food-grade oil-repellent fluoropolymer is made of perfluoro Chromium complex of carboxylic acid, fluorocarbon acrylate resin, fluorocarbon sulfonamido ethyl acrylate mixed;

[00...

Embodiment 3

[0040] A kind of production method of degradable straw pulp molded tableware comprises the following steps:

[0041] 1) Pulping process: wheat straw and bagasse are used as raw materials, screened, root-cut, pulverized, diluted with water at a weight ratio of 1:50, thawed, and added with 5wt%H 2 o 2 As a strong oxidant, pressurize 0.45MPa to make plant fiber pulp;

[0042] 2) Pulping process: dilute the plant fiber pulp with water until the weight ratio of the raw material to water is 1:150, decompose, and then add 5Wt% food grade water repellent acrylate and 7Wt‰ food grade oil repellent in sequence Fluoropolymer, stirred for 10 minutes, the slurry was sent to the automatic metering device of the molding machine by the pumping system, quantified 50g, and then stirred for 25 minutes to obtain the production slurry; Chromium complex of fluorocarboxylic acid, fluorocarbon acrylate resin, fluorocarbon sulfonamidoethyl acrylate mixed;

[0043] 3) Forming process: using the form...

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PUM

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Abstract

The invention discloses a production method of degradable straw pulp molded tableware, and the production method comprises the following steps: 1) the pulping process step: taking bagasse and wheat straw or rice straw as raw materials, screening, cutting roots, crushing, diluting, adding a strong oxidant and preparing plant fiber pulp under the pressurization condition; 2) the pulp mixing processstep: adding water in the plant fiber pulp for dilution till the weight ratio of raw material to water is 1: 150-200, sequentially adding a food-grade water-proofing agent and a food-grade oil-proofing agent, stirring and obtaining pulp liquid for production; 3) the molding process step: spirally injecting the pulp into a mold of a molding machine along the inner wall, uniformly stirring the pulpby relying on the recoil force formed by fluid, carrying out vacuum removal of part of the water, and completing the production of a wet green; and 4) the product sizing: transferring the wet green into the mold of the molding machine and preparing a finished product under high temperature and high pressure. The production method is pollution-free and can reduce the production energy consumption,reduce the failure rate of the product and significantly improve the product quality.

Description

technical field [0001] The invention relates to a production method of degradable straw pulp molded tableware. Background technique [0002] "White pollution" generally refers to foam plastic products, plastic products and plastic films that are not degradable in the natural environment for hundreds of years, or even hundreds of years. After use, they are discarded and cause serious pollution to the environment. Polystyrene (PS) foam is one of the chief culprits of "white pollution", and it mainly has two hazards. One is the waste plastic packaging scattered in cities, tourist areas and other places, destroying the city appearance and landscape, causing "visual pollution"; ecological environment problems. [0003] The cost problem restricts the development of disposable degradable tableware industry. Taking disposable lunch boxes as an example, they are not only environmentally friendly, but also oil-proof, waterproof, and high-temperature resistant, but they also have a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A45C11/20A47G19/03A47G19/22
Inventor 张平
Owner 浙江金晟环保股份有限公司
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