CN86108849A - A kind of tackiness agent and preparation method thereof - Google Patents

Abstract

The invention discloses a kind of carton with tackiness agent and preparation method thereof, by chemical feedstockss such as starch, oxygenant, catalyzer, terminators, in a certain order, the stirring reaction through certain hour forms at normal temperatures.It is short to have a Production Time, and processing units is simple, makes and use not limited by temperature condition, and product performance are stable, viscosity fastness is high, are convenient to deposit and transport, and are with low cost, and characteristics such as operational safety extensively are useful for the binding paper box of carton industry.

Description

The present invention relates to a kind of carton industry tackiness agent and preparation method thereof.

The used tackiness agent of carton factory mostly adopts the Sumstar 190 method to prepare at present.Because the processing method difference of taking when adopting Sumstar 190 to prepare is divided into two kinds of hot method for making (half hot method for making) and refrigerating methods again.As Shanghai the 3rd paper product factory, the tackiness agent that adopts hot method for making to produce, the product cohesive force is good; Effect is also very desirable, but has Production Time long (whole process needs more than 9 hours), equipment complexity (will carry out in 2 reaction ax), energy consumption height (whole process all will keep more than 60 ℃).Investment is big, and cost is higher.Though be to adopt cold method for making, because the prescription that uses is different with the technical process layout, still there is Production Time long (whole process needs more than 5 hours) in Guangzhou paper product factory and for example, the equipment complexity, invest bigger, shortcoming such as productivity is lower.

In sum, the objective of the invention is on the basis that absorbs development said products advantage, to provide an investment little, simple for production, need not heat, with short production cycle, viscosity is good, fastness is big, is convenient to deposit and transport safe and reliable a kind of tackiness agent and preparation method thereof.

Task of the present invention is realized by following method, in a reaction ax, under the stirring of stirrer, according to a definite sequence, progressively adds oxygenant, starch, catalyzer, terminator etc., forms through the certain hour stirring reaction at normal temperatures.

It is that 8% clorox and content are 30% hydrogen peroxide that oxygenant adopts available chlorine content respectively, and usage quantity is (is radix with every 100kg starch, down with) clorox 2,5-3%, hydrogen peroxidase 10,45-0,5%.

Starch is generally W-Gum, and also available Ipomoea batatas, cassava, wheat starch are made raw material.The W-Gum component content is: whiteness 85%, and moisture content 11-14%, ash content are not more than 00,5%, acidity 25, fineness 99 orders, protein is not more than 0,5%, and fat is not more than 0,4%, every square metre 3%0 of spot, smell is normal.

Hypochlorous sodium, the hydrogen peroxide as oxidant Sumstar 190 is carrying out (can decompose rapidly more than 60 ℃ as hydrogen peroxide) easily under the temperature condition with higher, but reacts at low temperatures just relatively slowly.Therefore, adopt the single nickel salt of 0,5% ferrous sulfate or 0,5% to make catalyzer, to quicken that oxidation of starch is shortened the production cycle of tackiness agent in the present invention.Generally using ferrous sulfate more than 20 ℃, usage quantity 0,07-0,075%, and when the low temperature below 20 ℃ prepares, it is remarkable to use single nickel salt to make catalyst effect, and usage quantity is 0,02-0,025%.

For the viscosity that increases tackiness agent and make it have certain flowability, and make tackiness agent increase denseness, improve clinging power, the present invention has adopted 10% sodium hydroxide and 20% borax equally, usage quantity is sodium hydroxide 0,7-1%, and optimum quantum of utilization 0,8%, borax are 0,15-0,4%.

After oxidation reaches necessary requirement, with regard to stopping the continuation reaction of oxygenant, promptly add terminator to tackiness agent, make it remaining oxygenant reduction, the activity of controlling microbial makes the seasoning of tackiness agent energy longer-term unremitting not rare.Because terminator is some reductive agents, kind is more, and in the present invention, adopting its content is 10% Sulfothiorine or S-WAT, and usage quantity is 0,04-0,06%.

Because starch contains sodium soap (soap class) inevitably, after tackiness agent enters adhesive applicator, two roller friction meeting bubblings, and bubble too much can influence cohesive strength and gluing uniformity coefficient, therefore, can add defoamer (as silicone oil, tbp) in right amount and eliminate or reduce bubble, usage quantity is 0,02-0,025%.

The preparation tackiness agent normally reacts under the stirring of stirrer and carries out, and stirring velocity is fast more, and the reactant touch opportunity increases, then speed of response is accelerated, but the too fast feed liquid that will make flashes, and foam increases, therefore to control proper speed, generally between 50-150 rev/min.

Adopt the present invention to form the tackiness agent of production, has obvious superiority, Production Time is short, and (hypochlorous sodium is that oxygenant is when preparing, 1,10-1,30 hours/ton just make) be that oxygenant is when preparing with the hydrogen peroxide, 1, just made in 30-2 hour/ton), equipment is simple, makes and use not to be subjected to temperature condition restriction (10 ℃-45 ℃ all can), and product performance are stable, initial bonding strength is strong, tore in 10 minutes, adhesive face is all scared, and is still stupefied, rate of drying is fast, the viscosity fastness height, cohesive force surpasses the intensity of paper own, and paper damage face reaches 100% when tearing.

Embodiments of the invention are described as follows:

One, hypochlorous sodium is an oxygenant when preparing, and its method is as follows.

1, in reaction ax, adds 600Kg water earlier, under stirrer 50-150 rev/min stirring, adding 56kg available chlorine content is 8% clorox, mix the back and add the 200kg W-Gum, add solvent in advance content after the mixing again and be 0,5% nickel sulfate solution 45 grams, stirred about 5 minutes, above-mentioned material is uniformly dispersed mutually.

2, under agitation the sodium hydroxide solution of 54kg10% is added in the above-mentioned mixed solution and react.Reactant retrogradation before this, then with the carrying out that reacts, the starch oxidation chain rupture, reactant is thinning gradually, when proceeding to about 30 minutes, can survey its viscosity with being coated with No. 4 cups as one sees fit, when viscosity reaches 60 seconds left and right sides, promptly reach the degree of oxidation of necessary requirement, add water 200kg again, the back that stirs is surveyed its medium viscosity and is got final product second for 25-30.

3,20% borax 7kg is added in the above-mentioned mixed solution, after mixing, survey its whole viscosity and be and get final product about 50 seconds (these data can be according to our factory's glue situation, improves a little or descends with whirl coating not, and coating is a standard evenly).

4,10% Sulfothiorine 1,2kg are added in the above-mentioned mixed solution, after mixing, add 0,5% tbp 50 grams again, promptly get the translucent body finished product behind the uniform mixing.

Two, with the hydrogen peroxide be oxygenant when preparing, its method following (generally when temperature 20 degree are above, using).

1, the hydrogen peroxide 9, the 3kg that in reaction ax, add 400kg water and 30% earlier, the back that mixes at stirrer 50-150 rev/min adds 200kg starch, mixes thoroughly, adds 0,5% copperas solution 150 grams again, stirred 5 minutes, above-mentioned material is mixed mutually.

2,10% sodium hydroxide 54kg is added in the above-mentioned mixed solution mix, when its reaction is carried out about 1 hour, add tbp 50 grams, wait to steep most of the disappearance after, look its rare situation and add 200kg again, surveying its viscosity is promptly to reach oxidation depth about 60 seconds.

3, again 200kg water is added in the above-mentioned mixed solution, the back that stirs survey its viscosity be about 30 seconds after, add 20% borax 4kg, mixing the back, to survey its whole viscosity be about 50 seconds, adds 10% Sulfothiorine 1,3kg again, promptly gets the translucent body finished product after the mixing.

Claims (4)

1, a kind of tackiness agent and preparation method thereof comprises starch, water, clorox or hydrogen peroxide, sodium hydroxide, borax, tbp, the invention is characterized in to contain catalyzer, terminator.It forms weight ratio is starch 7.5-10%, water 40-45%, catalyzer clorox 2,5-3% or 30% hydrogen peroxidase 10 .45-0,5%, catalyzer 0,07-0,075 or 0,02-0,025%10% sodium hydroxide 0,7-1%, 20% borax 0,15-0,4%, terminator 0,04-0,06%, tbp 0,02-0,025%, stirring velocity is 50-150 rev/min.

2, by the described preparation method of claim 1, it is characterized in that said catalyzer is meant 0,5% ferrous sulfate or 0,5% single nickel salt.

3,, it is characterized in that said terminator is meant 10% Sulfothiorine or 10% S-WAT by the described preparation method of claim 1.

4, by the described preparation method of claim 1, it is characterized in that stirring velocity is 50-150 rev/min.