A kind of preparation method of emulsion type pressure-sensitive adhesive

Abstract

The invention relates to a preparation method of emulsion type pressure-sensitive adhesive. The manufacturing process of the pressure-sensitive adhesive emulsion of the present invention is by adding a cooling kettle. After the emulsion is kept warm in the reactor, the emulsion is directly placed in the cooling kettle to cool down, so that it is not necessary to carry out a long cooling process in the reactor. When the emulsion is cooled in the cooling kettle, the next pot of emulsion can be made in the reactor at the same time, which greatly shortens the process time and improves the shift output; at the same time, the cooling time and effect are greatly improved compared with the original one. In the process of putting the emulsion in the reaction kettle into the cooling kettle, the emulsion will dissipate a lot of heat when it comes into contact with the relatively low room temperature around, so the process of pouring the emulsion from the reaction kettle into the cooling kettle can reduce the temperature a lot, thus The later cooldown has been shortened.

Description

technical field [0001] The invention relates to a preparation method of emulsion type pressure-sensitive adhesive. Background technique [0002] Nowadays, the production of emulsion-type pressure-sensitive adhesive is a relatively mature process. Generally, the production of pressure-sensitive adhesive emulsion is realized through the following steps: first, the configuration of pre-emulsion, by mixing water, acrylate monomer, acrylic acid, and hydroxyethyl Mix and stir with an emulsifier to obtain a pre-emulsion, then add water to the reactor, heat it to a certain temperature, add the prepared pre-emulsion to the reactor dropwise, and add the initiator, after the pre-emulsion is added dropwise, keep warm, and then Cool, pour out the emulsion after cooling to a predetermined temperature, and complete the production. A big problem with this kind of glue making process is that the production time is very long. It takes several hours to add the pre-emulsion, and then it needs ...

AI Technical Summary

Problems solved by technology

A big problem with this kind of glue making process is that the production time is very long. It takes several hours to add the pre-emulsion, and then it needs to be kept warm for an hour. The final cooling process takes a long time, because now The capacity of industrial reactors can hold several tons to dozens of tons of glue, so it takes a long time for the temperature in the entire reactor to cool down.

In this way, the production efficiency is low and the output cannot be improved.

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