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Environment-friendly binding agent for corrugated carton

A corrugated box, environmentally friendly technology, applied in the direction of adhesive types, starch-derived adhesives, polymer adhesive additives, etc., can solve problems such as difficult to eradicate, easy to mildew, long pollution cycle, etc.

Inactive Publication Date: 2019-07-12
CHUZHOU CIGARETTE MATERIALS FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to increase the bonding strength of native starch adhesives and make up for defects such as unstable performance, easy to mildew, poor fluidity, and easy to come off the label, formaldehyde and borax are usually added in the production process, so there is free formaldehyde release and borax. The problem of poisoning is difficult to eradicate due to its long pollution cycle, which endangers human health and the ecological environment

Method used

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  • Environment-friendly binding agent for corrugated carton
  • Environment-friendly binding agent for corrugated carton
  • Environment-friendly binding agent for corrugated carton

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An environment-friendly adhesive for corrugated boxes, comprising the following components by weight: 100 parts of modified starch, 5 parts of polyvinyl alcohol and 0.5 parts of defoamer;

[0030] The preparation of this environment-friendly adhesive specifically comprises the following steps:

[0031] The first step: swelling of starch

[0032] Add 1kg of starch and 2.5kg of water into the mixer in turn, stir evenly at 10°C, then add 100g of 45% sodium hydroxide aqueous solution, heat up to 35°C, stir at constant temperature and high speed for 15min, and fully swell the starch;

[0033] Step 2: Preparation of Stabilizing Modifier

[0034] Add 10mol resveratrol into the reaction kettle, then add 30mol potassium iodide, stir and mix evenly, keep the temperature of the reaction kettle at 40°C, and the stirring speed is 180r / min, add 50mol phosphoric acid dropwise, and the addition rate of phosphoric acid is 1- 2 drops / s, after all the phosphoric acid is added, keep the ...

Embodiment 2

[0040] An environment-friendly adhesive for corrugated boxes, comprising the following components in parts by weight: 100 parts of modified starch, 10 parts of polyvinyl alcohol and 1 part of defoamer;

[0041] The preparation of this environment-friendly adhesive specifically comprises the following steps:

[0042] The first step: swelling of starch

[0043] Add 1kg of starch and 3kg of water into the mixer in turn, stir evenly at 15°C, then add 150g of 45% sodium hydroxide aqueous solution, raise the temperature to 0°C, stir at constant temperature and high speed for 18min, and fully swell the starch;

[0044] Step 2: Preparation of Stabilizing Modifier

[0045] Add 10mol resveratrol into the reaction kettle, then add 30mol potassium iodide, stir and mix evenly, keep the temperature of the reaction kettle at 45°C, and the stirring speed is 200r / min, add 50mol phosphoric acid drop by drop, the addition rate of phosphoric acid is 1- 2 drops / s, after all the phosphoric acid i...

Embodiment 3

[0051] An environment-friendly adhesive for corrugated boxes, comprising the following components by weight: 100 parts of modified starch, 8 parts of polyvinyl alcohol and 0.7 parts of defoamer;

[0052] The preparation of this environment-friendly adhesive specifically comprises the following steps:

[0053] The first step: swelling of starch

[0054] Add 1kg of starch and 2.7kg of water to the mixer in turn, stir evenly at 12°C, then add 120g of 45% sodium hydroxide aqueous solution, raise the temperature to 36°C, stir at constant temperature and high speed for 17min, and fully swell the starch;

[0055] Step 2: Preparation of Stabilizing Modifier

[0056] Add 10mol resveratrol into the reaction kettle, then add 30mol potassium iodide, stir and mix evenly, keep the temperature of the reaction kettle at 50°C, and the stirring speed is 180r / min, add 50mol phosphoric acid dropwise, and the addition rate of phosphoric acid is 1- 2 drops / s, after all the phosphoric acid is adde...

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Abstract

The invention discloses an environment-friendly binding agent for a corrugated carton. The environment-friendly binding agent for the corrugated carton is prepared from the following components in parts by weight: 100 parts of modified starch, 5 to 10 parts of polyvinyl alcohol and 0.5 to 1 part of an anti-foaming agent; first, the starch is swelled and activated; then, substitution reaction is performed by adopting the stable modifying agent which is obtained by performing nucleophilic addition by non-toxic and eatable resveratrol and hydrogen iodide; a starch active centre is substituted bythe stable modifying agent; iodide ions leave and form a stable bond; an unstable ether bond is substituted by a polar functional group with new characteristics in the modified starch, so that the stability of the starch is increased, and the problem that the starch performance is unstable is solved; in addition, the introduced active phenolic hydroxyl group has a sterilizing effect, and the mildew of the starch is prevented; the prepared binding agent is not added with formaldehyde and is environment-friendly; the bonded corrugated carton can be applicable to the packaging of a plurality of products.

Description

technical field [0001] The invention relates to an adhesive, in particular to an environment-friendly adhesive for corrugated boxes. Background technique [0002] As an indispensable packaging container in production and life, corrugated boxes are widely used in the transportation and packaging of various industries such as food, household appliances, textiles, food industry, and daily chemicals. Corrugated cardboard is a kind of paper composite board, which is a non-metallic interlayer material with visco-elasticity and plasticity. It is made of corrugated corrugated core paper and inner and outer paper. Pads, paper corner protectors, display stands, paper furniture, paper toys, lightweight building materials, etc. The products show a trend of diversification, and the industrial application prospects are broad. [0003] The basic structure of corrugated cardboard is illustrated by taking single corrugated cardboard as an example. Single corrugated cardboard, that is, three...

Claims

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Application Information

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IPC IPC(8): C09J103/04C09J11/08C08B31/00
CPCC08B31/00C09J11/08C09J103/04C08L29/04
Inventor 胡宏旗杜威陶香君
Owner CHUZHOU CIGARETTE MATERIALS FACTORY
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