CN1270197A - Quickly water-proof adhesive for labels and preparing process thereof - Google Patents

Abstract

A water-proof quick-acting adhesive for label is prepared from water, tributyl phosphate, copper sulfate, zinc sulfate, sodium benzoate, amylin, starch, urea, casein, calcium hydroxide, ammonia water and VAE emulsion through proportional and sequential mixing and reacting at a certain temp. Its advantages also include low cost, and high speed to remove label by high-temp alkali washing.

Description

Quickly water-proof adhesive for labels and method for making thereof

The invention belongs to technical field of adhesive, be applicable to that mainly mechanize pastes a kind of high sticking MR adhesive of tinsel label and stationery label at a high speed, and the good adhesive for labels of high temperature alkali detergency.

Development along with domestic beer beverage industry, its packing class and production rate all improve constantly, polyvinyl alcohol in the past and starch, dextrin class trade mark tackiness agent exists water resistance poor, being not suitable for refrigerator-freezer deposits, in addition, domestic beer production line by original 20000 bottles/time, now bring up to 40000 bottles/time, external production line reached 60000 bottles/time production rate, this just requires label glue to have good tack and high speed operation, amylodextrin class and polyvinyl alcohol tackiness agent all do not satisfy the requirement of high-speed production, so beer beverage manufacturer uses casein series tackiness agent gradually both at home and abroad.

The casein tackiness agent is a kind of good initial stage binding property that has both, the comparison equilibrated tackiness agent of water tolerance and neutralizing treatment, because domestic casein price is higher, add and lack relevant production technology, so, domestic 40000 bottles/time above beer production line and as the producer of tinsel label glue, dependence on import mostly, about 2.6 ten thousand yuan per ton.Though nearly one or two years, more domestic units developments were also produced the casein tackiness agent, owing to the cost reason, its price per ton also up to 20,000 yuan about.

The objective of the invention is according to domestic raw materials market, development provides a kind of binding speed fast, and the strong cost of water tolerance is low, and clean well behaved a kind of quickly water-proof adhesive for labels of high temperature alkali cleaning and method for making thereof.

The object of the present invention is achieved like this, address the above problem in order to reach, inquire into keen determination, it is the adhesive for labels that major ingredient constitutes that the result has found by casein, dextrin and VAE emulsion, in the tackiness agent, increased the dextrin composition, having changed simple is main raw material and the too high predicament of cost in the tackiness agent, has added the VAE emulsion with the casein, not only the taken on a new look anti-degree of seeing of tackiness agent has improved its water tolerance again.

Embodiment of the present invention is: add gauge water in having the reactor of heating unit, add tbp, copper sulfate, zinc sulfate, benzic acid sodium, dextrin, starch, urea, casein food grade then successively, heat up 70-80 ℃ then, add calcium hydroxide and ammoniacal liquor, be incubated 30 minutes, be cooled to 40 ℃ then, add the VAE emulsion again, stirred 10-20 minute, and be finished product.

Adhesive for labels with the present invention makes detects through Henan Province's product quality supervision and testing institute, and its physical and chemical index is all suitable with external like product, but its cost only is 1/2 of an external like product, about about 5000 yuan of per ton cost.

Each forms part:

Water 500 copper sulfate 2-4 tbp 3-7

Zinc sulfate 3-8 Sodium Benzoate 4-7 dextrin 50-180

Starch 20-50 urea 150-240 casein food grade 150-260

Calcium hydroxide 10-20 VAE emulsion 100-200 ammoniacal liquor 5-10

The following weight of most preferred embodiment of the present invention is counted:

Water 500 Sodium Benzoates 5 starch 20

Calcium hydroxide 10 copper sulfate 2 tbps 5

Urea 200 ammoniacal liquor 10 zinc sulfate 6

Dextrin 10 casein food grade 200 VAE emulsions 100

A. in having the reactor of heating unit, add entry, under whipped state, add tbp, copper sulfate, zinc sulfate, Sodium Benzoate, dextrin, starch, urea, casein food grade more successively in proportion, be warming up to 70-80 ℃ then;

B. calcium hydroxide, ammoniacal liquor are added in the reactor successively, under 70-80 ℃ of temperature, stir and dissolved fully to casein food grade in 30 minutes, be cooled to 40 ℃ then;

C. the VAE emulsion is added in the reactor, stirred 10-20 minute, put into pail pack, be finished product.

Claims (2)

1. quickly water-proof adhesive for labels is characterized in that the weight ratio of major ingredient is: water 500, copper sulfate 2-4, zinc phosphate 3-8, starch 20-50, tbp 3-7, Sodium Benzoate 4-7, dextrin 50-180, urea 150-240, casein food grade 150-260, calcium hydroxide 10-20, ammoniacal liquor 5-10, VAE emulsion 100-200.

2. according to claim 1, the making method of quickly water-proof adhesive for labels is characterized in that:

A. in having the reactor of heating unit, add entry, under whipped state, add tbp, copper sulfate, zinc sulfate, Sodium Benzoate, dextrin, starch, urea, casein food grade more successively in proportion, be warming up to 70-80 ℃ then;

B. calcium hydroxide, ammoniacal liquor are added in the reactor successively, under 70-80 ℃ of temperature, stir and dissolved fully to casein food grade in 30 minutes, be cooled to 40 ℃ then;

C. the VAE emulsion is added in the reactor in proportion, stirred 10-20 minute, be finished product.