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Method for preparing food-grade disposable product

A food-grade, disposable technology for pulp beating methods, textiles and papermaking, inorganic compound additions, etc.

Inactive Publication Date: 2019-04-16
ZHEJIANG JINCHANG SPECIALTY PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since disposable products such as food-grade straws, stirring rods, and spoons have high requirements on wet strength, permeability, and water resistance, no related applications have been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The present invention will be further described below in conjunction with specific examples.

[0010] 1. Using 80% hardwood pulp and 20% softwood pulp, the concentration is 5%, the degree of beating is 35 ° SR, adding 1% nanocellulose (accounting for the percentage of wood pulp mass), adding a certain amount of anti- Water agent, anti-oil agent emulsion, etc., form a stable and uniformly dispersed slurry after stirring. The water repellant is one or more of polyvinyl alcohol, linoleic acid, and potassium zirconium carbonate, and the oil repellent is food-grade organic silicon oil repellant.

[0011] 2. Take a certain amount of slurry, add it to a paper molding machine, and process it into a paper molding by vacuum forming and hot pressing. The molding machine adopts the models with straws, stirring rods, spoons and other utensils, and processes them into paper molded models with a thickness of 0.1mm~1.5mm.

[0012] 3. Mold the processed paper, heat, dry and shape it, ...

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Abstract

The invention relates to a method for preparing a food-grade disposable product. The method comprises the following steps of (1) pulp preparation, wherein native wood pulp of bleached sulfate needle wood and broadleaf wood is taken as a raw material, the concentration of the pulp is 5%, the pulping degree of the pulp is controlled to be larger than or equal to 25 degrees at steradian through pulping, nanocellulose of which the mass ratio is 0.1-5% is added to serve as a reinforcing agent and a binder, a certain amount of a water-repellent agent and oil-repellent agent are added, and the mass concentration of the pulp is controlled to be 1-10% to form the stable and uniformly dispersed pulp; (2) adsorption and forming, wherein the pulp is processed into pulp-molding plastic by a pulp-molding plastic forming machine through vacuum forming and hot press curing; (3) drying and sizing, wherein the pulp-molding plastic is heated, dried, sized, cut, trimmed and surface-finished to form the food-grade disposable product. The method for preparing the food-grade disposable product has the advantages that when straws, stirrers, spoons and other disposable products are in use, the wet strength, permeability, water resistance and other indexes completely meet the requirements, and the food-grade disposable product is non-toxic and harmless, can be naturally degraded, and is green and environmentally friendly.

Description

technical field [0001] The invention relates to a method for preparing food-grade disposable products, in particular to a method for preparing food-grade disposable products such as straws, stirring rods and spoons. Background technique [0002] Existing disposable straws, stirring rods and spoons are mainly made of plastic, and disposable plastic products are harmful to the human body and the environment in varying degrees. First of all, disposable plastic products contain toxic substances, such as bisphenol-based propane, which seriously endanger people's health; secondly, disposable plastic products are not easy to degrade, and it takes at least 2000 years to be degraded when discarded in nature , causing harm to people and the environment. [0003] Pulp molding is a paper product that is shaped into a certain shape by pulping, adsorption molding, drying and setting, etc. It is harmless to the environment, and paper products can also be recycled. This technology is mainl...

Claims

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Application Information

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IPC IPC(8): D21D1/02D21H11/00D21H17/14D21H17/36D21H17/67D21H21/06D21H21/18D21J5/00
CPCD21D1/02D21H11/00D21H17/14D21H17/36D21H17/675D21H21/06D21H21/18D21J5/00
Inventor 陈杰孟育童树华詹卫民王劢稼杨宗建徐欢
Owner ZHEJIANG JINCHANG SPECIALTY PAPER CO LTD
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