Method for producing fruit breeding bag paper with high water resistance

A fruit bag paper, water-based technology, applied in the direction of paper, papermaking, textiles and papermaking, etc., can solve the problems of poor air permeability and water resistance production technology, black spots on fruits, high single index, etc., to achieve strength and softness Good resistance, high water resistance, satisfying the effect of respiration

Inactive Publication Date: 2012-06-27
山西中宝纸业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many problems in the use of fruit bag paper produced in China. The production technology of the opposing technical indicators of air permeability and water resistance is not good enough, resulting in both being low, or one indicator is high and the other is low, resulting in fruit easily. Black spots, sunburn, rot and other defects
In order to reduce costs, some fruit bag paper factories have sacrificed part of the quality, and all use waste paper pulp and inferior chemical raw materials, resulting in poor product quality and frequent incidents of hurting fruit and farmers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Preparation of water-resistant agent: Add 150 parts of paraffin and 40 parts of stearic acid into the reactor in parts by mass, heat to 80°C, then add 10 parts of borax and 6 parts of soda ash, stir well, add 2600 parts of water Dilute and stir at 50°C for 3 hours to obtain a water-resistant agent;

[0015] 2) Preparation of melamine-formaldehyde resin: 25 parts of formaldehyde solution with a mass fraction of 40% was added to the reaction kettle, and after the pH value was adjusted to 10 with NaOH, 15 parts of melamine and 12 parts of hydrochloric acid with a mass fraction of 36% were added to the reaction In the kettle, react at 80°C for 1 hour to obtain a melamine-formaldehyde resin, and dilute with water to obtain a melamine-formaldehyde resin solution with a mass fraction of 10%;

[0016] 3) Beating: beating natural softwood pulp and waste newspaper to 40°SR respectively;

[0017] 4) Pulping: mix 20% natural softwood pulp after beating with 80% waste newspaper ...

Embodiment 2

[0021] 1) Preparation of water-resistant agent: Add 80 parts of paraffin and 10 parts of stearic acid into the reactor in parts by mass, heat to 60°C, then add 2 parts of borax and 1 part of soda ash, stir well, add 1200 parts of water Dilute and stir at 70°C for 2 hours to obtain a water-resistant agent;

[0022] 2) Preparation of melamine formaldehyde resin: Take 10 parts of 37% formaldehyde solution by mass fraction and add it to the reaction kettle, adjust the pH value to 7.5 with NaOH, then add 10 parts of melamine and 5 parts of 38% hydrochloric acid to react In the kettle, react at 70°C for 3 hours to obtain a melamine-formaldehyde resin, and dilute with water to obtain a melamine-formaldehyde resin solution with a mass fraction of 12%;

[0023] 3) beating: beating natural softwood pulp and waste newspaper to 50°SR respectively;

[0024] 4) Pulp mixing: mix 50% natural softwood pulp and 50% waste newspaper pulp by mass fraction in the same pulp mixing box to obtain mix...

Embodiment 3

[0027] 1) Preparation of water-resistant agent: Add 120 parts of paraffin and 15 parts of stearic acid into the reactor in parts by mass, heat to 70°C, then add 4 parts of borax and 5 parts of soda ash, stir evenly, and add 1800 parts of water Dilute and stir at 60°C for 1 hour to obtain a water-resistant agent;

[0028] 2) Preparation of melamine formaldehyde resin: Take 15 parts of formaldehyde solution with a mass fraction of 38% and add it to the reaction kettle. After adjusting the pH value to 9 with NaOH, add 12 parts of melamine and 8 parts of hydrochloric acid with a mass fraction of 36%. In the kettle, react at 60°C for 2 hours to obtain a melamine-formaldehyde resin, and dilute with water to obtain a melamine-formaldehyde resin solution with a mass fraction of 10;

[0029] 3) Beating: beating natural softwood pulp and waste newspaper to 60°SR respectively;

[0030] 4) Pulping: mix 40% natural softwood pulp after beating with 60% waste newspaper pulp by mass fraction...

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PUM

PropertyMeasurementUnit
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Abstract

A method for producing a fruit breeding bag paper with high water resistance. The method comprises steps of: preparation of water repellent agent, preparation of wet strength agent, beating, slurry blending, formation through a net part, squeezing and dehydration, drying, reeling and cutting and winding. The method of the invention uses waste paper pulp as a main fibrous raw material and uses the self-made water repellent agent; the produced fruit breeding bag paper has good water resistance, water resistant endurance and high breathability; the method has advantages of simple production process and low cost, and solves problems of domestic fruit breeding bag paper, such as substandard production technology for the opposite technological indexes of breathability and water resistance and subsequent higher and lower of the two technological indexes. The method of the invention can be applied to production of fruit breeding bag paper, which can satisfy growth demand of fruits, prevent pesticide pollution and erosion by wind and rain, and improve surface color of the fruits.

Description

technical field [0001] The invention relates to a method for producing highly water-resistant fruit-growing bag paper. Background technique [0002] With the improvement of people's living standards and the enhancement of environmental protection awareness, the demand for fruits is increasing, and higher requirements are also put forward for their quality. Natural and pollution-free green fruits are becoming more and more popular. Fruit bag paper is a kind of agricultural technical paper used in the process of fruit growth in order to improve the quality of fruit products and increase its economic value. The use of fruit bagging can improve the coloring degree of the fruit; it can improve the cleanliness of the fruit, reduce the residue of pesticides and dust pollution, and ensure human health; improve the integrity of the fruit and reduce pests and diseases; increase the rate of commercial fruit and economic benefits, etc. . Due to the influence of wind, sun and rain duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/14D21H21/20D21H17/51
Inventor 张美云罗英刘俊华
Owner 山西中宝纸业股份有限公司
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