Manufacturing method of rapidly-degraded environment-friendly corrugated board

A corrugated cardboard, rapid degradation technology, applied in special paper, chemical instruments and methods, paper/cardboard layered products, etc., can solve the problems of poor flame retardancy and low degradation speed of corrugated cardboard, so as to reduce activity and improve The effect of flame retardancy

Pending Publication Date: 2022-04-29

常熟市宏华外贸包装有限责任公司

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AI-Extracted Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for manufacturing a rapidly degradable environmentall...

Method used

S2, mixing slurry A and polyurethane, polyvinyl amine are placed in stirring furnace together, at 20-30 degree Celsius normal temperature and 50-100 turn per minute rotating speed and stir 2-3 hour, in the process of stirring, Add ammonium chloride into the stirring furnace every half hour, finally get the mixed slurry B, and store it statically, increase the water solubility of the cardboard itself by adding polyvinylamine and polyurethane, and accelerate the degradation of silicon contained in the cardboard The separation speed is improved, and silicon is dissolved and eliminated by ammonium chloride to increase the speed of cardboard self-degradation;

S2, mixi...

Abstract

The invention provides a manufacturing method of an environment-friendly corrugated board capable of being rapidly degraded, and relates to the technical field of paper product manufacturing. According to the manufacturing method of the rapidly-degraded environment-friendly corrugated board, a degradation raw material group comprises the following raw materials in parts by weight: 5-15 parts of polyurethane, 2-3 parts of polyvinylamine and 10-15 parts of ammonium chloride, and a flame-retardant raw material group comprises the following raw materials in parts by weight: 2-5 parts of aluminum nitrate, 5-10 parts of ammonium chloride, 20-30 parts of pure water, 10-15 parts of silicon monoxide and 10-20 parts of citric acid. In the stirring process, ammonium chloride is added into the stirring furnace every half an hour, the water solubility of the paperboard is improved through the added polyvinylamine and polyurethane, the degradation and separation speed of silicon contained in the paperboard is increased, and the silicon is dissolved and eliminated through the ammonium chloride; the temperature of the high-temperature stirring tank is increased to 120-130 DEG C, stirring is carried out, the obtained flame-retardant liquid is mixed with paperboard raw materials, the activeness of cellulose contained in the paperboard at the high temperature is reduced, and the flame-retardant capacity is improved.

Application Domain

Flexible coversMechanical working/deformation +7

Technology Topic

Corrugated fiberboardAmmonium chloride mixture +9

Examples

Experimental program(2)

Example Embodiment

[0027] Embodiment 1:

[0028] The embodiment of the invention provides an environment-friendly corrugated board with rapid degradation, including degradation raw material group, main raw material group and flame retardant raw material group.

[0029] The degradation raw material group includes the following parts by weight: Polyurethane 5-15 parts, polyvinylamine 2-3 parts and ammonium chloride 10-15 parts.

[0030] The weight of polyurethane degradation raw materials includes 10-15 parts of ammonium chloride and less than 2-15 parts of polyethylene.

[0031] The flame retardant raw material group includes the following parts by weight: aluminum nitrate 2-5 parts, ammonium chloride 5-10 parts, pure water 20-30 parts, silicon oxide 10-15 parts and citric acid 10-20 parts.

[0032] The adhesive includes the following parts by weight of raw materials: 5-10 parts of hydrogen peroxide, 2-3 parts of defoamer, 30-40 parts of polyvinyl alcohol and 20-30 parts of acrylic acid.

[0033] The adhesive comprises the following preparation steps:

[0034] Firstly, polyvinyl alcohol, acrylic acid and water are added into the mixer, and stirred at 50-70 ℃ and 30-50 rpm for 1-1.5 hours. After stirring evenly, hydrogen peroxide aqueous solution is added, and the reaction is allowed to stand for 30-40 minutes to obtain mixture A. defoamer is added into the mixer, and the adhesive a is obtained after standing for 20-30 minutes.

[0035] The invention relates to a manufacturing method of rapidly degradable environment-friendly corrugated board, which comprises the following preparation steps:

[0036] S1. Firstly, put the corn straw into the pulverizer, crush the corn straw to 5-10 mesh powder at the speed of 100-150 rpm, and then put it into the high-temperature pulper together with alkali, sodium hydroxide, hydrochloric acid and steamer water. After beating at 80-100 ℃ for 1-2 hours, get the mixed slurry a;

[0037] S2. Put the mixed slurry a together with polyurethane and polyvinylamine in the mixing furnace and stir it at room temperature of 20-30 ℃ and rotating speed of 50-100 rpm for 2-3 hours. During the mixing process, ammonium chloride is added into the mixing furnace every half an hour. Finally, the mixed slurry B is obtained and stored statically. The water solubility of the paperboard itself is improved by adding polyvinylamine and polyurethane, and the degradation and separation speed of silicon contained in the paperboard is accelerated, The silicon was dissolved and eliminated by ammonium chloride to improve the degradation rate of paperboard itself;

[0038] S3. Add silicon oxide, aluminum nitrate and pure water into the high-temperature mixing tank, stir and mix at 100-120 ℃ and 30-50 rpm for 30-50 minutes. After mixing, add citric acid into the high-temperature mixing tank, stir at 50-80 ℃ for 20-30 minutes, and then add ammonium chloride. After raising the problem of the high-temperature mixing tank to 120-130 ℃, stand for 1-1.5 hours. After cooling to room temperature, get mixture a, In step S3, when silicon oxide, aluminum nitrate and pure water are stirred in the high-temperature mixing tank, the temperature inside the high-temperature mixing tank is reduced by 10-15 ° C every 10 minutes to obtain the flame retardant liquid, which is mixed with the paperboard raw materials to reduce the activity of the cellulose contained in the paperboard at high temperature and improve the flame retardant capacity;

[0039] S4. Put the mixed liquid a and mixed slurry B together in the drying room and dry them at 120-150 ℃ for 1-2 hours, so that the water content of paperboard slurry a after mixed liquid a and mixed slurry B is 20-30%;

[0040] S5. Place the paperboard slurry a in a hot press and press it into a 15-20mm thick plate blank a and a cylindrical folding texture blank a at 80-90 ℃, place it in a dry room at room temperature for static storage, and wait to cool to room temperature;

[0041] S6. Add a group of grain blanks a between two groups of plate blanks a, and pour adhesive a into the contact surface between grain blank a and platform blank A. after adhesive a cools and condenses, the finished corrugated board is finally obtained.

Example Embodiment

[0042] Embodiment 2:

[0043] The embodiment of the invention provides a rapid degradation environmental protection corrugated board, which comprises a degradation raw material group, a main raw material group and a flame retardant raw material group.

[0044] The degradation raw material group includes the following parts by weight: Polyurethane 8-20 parts, polyvinylamine 5-8 parts and ammonium chloride 5-10 parts.

[0045] The degradation raw material group includes the following parts by weight: 10-15 parts of polyurethane, 4-8 parts of polyvinylamine and 2-5 parts of ammonium chloride.

[0046] The flame retardant raw material group includes the following parts by weight: 2-5 parts of aluminum nitrate, 5-10 parts of ammonium chloride, 15-20 parts of pure water, 15-20 parts of silicon oxide and 10-15 parts of citric acid.

[0047] The adhesive includes the following parts by weight of raw materials: 4-8 parts of hydrogen peroxide, 3-5 parts of defoamer, 20-30 parts of polyvinyl alcohol and 15-20 parts of acrylic acid.

[0048] The adhesive comprises the following preparation steps:

[0049] Firstly, polyvinyl alcohol, acrylic acid and water are added into the mixer, and stirred at 50-70 ℃ and 30-50 rpm for 1-1.5 hours. After stirring evenly, hydrogen peroxide aqueous solution is added, and the reaction is allowed to stand for 30-40 minutes to obtain mixture A. defoamer is added into the mixer, and the adhesive a is obtained after standing for 20-30 minutes.

[0050] The invention relates to a manufacturing method of rapidly degradable environment-friendly corrugated board, which comprises the following preparation steps:

[0051] S1. Firstly, put the corn straw into the pulverizer, crush the corn straw to 5-10 mesh powder at the speed of 100-150 rpm, and then put it into the high-temperature pulper together with alkali, sodium hydroxide, hydrochloric acid and steamer water. After beating at 80-100 ℃ for 1-2 hours, get the mixed slurry a;

[0052] S2. Put the mixed slurry a together with polyurethane and polyvinylamine in the mixing furnace and stir it at room temperature of 20-30 ℃ and rotating speed of 50-100 rpm for 2-3 hours. During the mixing process, ammonium chloride is added into the mixing furnace every half an hour. Finally, the mixed slurry B is obtained and stored statically. The water solubility of the paperboard itself is improved by adding polyvinylamine and polyurethane, and the degradation and separation speed of silicon contained in the paperboard is accelerated, The silicon is dissolved and eliminated by ammonium chloride to improve the degradation speed of paperboard itself;

[0053] S3. Add silicon oxide, aluminum nitrate and pure water into the high-temperature mixing tank, stir and mix at 100-120 ℃ and 30-50 rpm for 30-50 minutes. After mixing, add citric acid into the high-temperature mixing tank, stir at 50-80 ℃ for 20-30 minutes, and then add ammonium chloride. After raising the problem of the high-temperature mixing tank to 120-130 ℃, stand for 1-1.5 hours. After cooling to room temperature, get mixture a, In step S3, when silicon oxide, aluminum nitrate and pure water are stirred in the high-temperature mixing tank, the temperature inside the high-temperature mixing tank is reduced by 10-15 ° C every 10 minutes to obtain the flame retardant liquid, which is mixed with the paperboard raw materials to reduce the activity of the cellulose contained in the paperboard at high temperature and improve the flame retardant capacity;

[0054] S4. Put the mixed liquid a and mixed slurry B together in the drying room and dry them at 120-150 ℃ for 1-2 hours, so that the water content of paperboard slurry a after mixed liquid a and mixed slurry B is 20-30%;

[0055]S5. Place the paperboard slurry a in a hot press and press it into a 15-20mm thick plate blank a and a cylindrical folding texture blank a at 80-90 ℃, place it in a dry room at room temperature for static storage, and wait to cool to room temperature;

[0056] S6. Add a group of grain blanks a between two groups of plate blanks a, and pour adhesive a into the contact surface between grain blank a and platform blank A. after adhesive a cools and condenses, the finished corrugated board is finally obtained.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Reduce activity
Improve flame retardant ability

Manufacturing method of rapidly-degraded environment-friendly corrugated board

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Examples

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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