How to resize binder to avoid Foldable With Ribbon Corrugated Board?

How to resize binder to avoid Foldable With Ribbon Corrugated Board?

Good adhesion should be coated between corrugated paper and face paper after high temperature baking adhesives rapidly gelatinized, paper and adhesives firmly combined, by special equipment and accessories to peel it off, tear should be the fiber of the paper, and should not be adhesive off.

Tile line used adhesives, in the preparation process, mainly control the solid content of adhesives, gelatinization temperature and viscosity.

Tile wire adhesive three technical indicators

Solid content refers to starch, caustic soda, raw rubber special desiccant, borax in the adhesive content, mainly refers to the amount of starch, starch content, solid content is high. In the process of use to adjust the gap between cots, you can improve the speed, increase output, and facilitate drying. The solid content of the binder is about 20% of the total binder.

Gelatinization temperature refers to the critical temperature between growth and maturation of the adhesive. When the gelatinization temperature of the adhesive is low, the heat consumed in the production process is less, so the vehicle speed can be improved.

Viscosity refers to the flow capacity of a binder during production and use. We require low viscosity adhesives, in fact, in order to have good mobility in use. Can improve the initial adhesion. Preparation of cooked pulp is the key to control the viscosity of adhesive. One should strictly control the mixing time, when the mixing time is not enough, the viscosity of the adhesive is not stable; Second, to master the ratio of caustic soda and other raw materials. Only properly grasp the solid content of adhesive, gelatinization temperature and viscosity of the relative relationship, in order to produce a good quality adhesive, so as to ensure good bonding in the production process.

The principle of tile wire adhesive production requirements

In the production process, the viscosity of starch glue is directly proportional to the temperature and the amount of caustic soda. In the process of use, the viscosity of starch glue is inversely proportional to temperature and stirring speed. In order to avoid in the process of using the viscosity of the glue to reduce too fast, as far as possible to reduce the colloidal cycle and the increase in temperature (such as the gear pump circulation system can be changed to an air pump, the large cycle to a single cycle).

1. The viscosity of the adhesive used in single-side machine and three-layer line production is controlled in 20-50 seconds (4 cups of coating).

2, five layer and seven layer line production use adhesive viscosity control in: 50-90 seconds, special circumstances, according to the requirements of the adhesive viscosity adjustment.

What match tile line speed and adhesive performance

Single side corrugated locomotive speed is too fast, we should consider the amount of glue on the corrugated peak, then the solid content of the adhesive is high, otherwise it will affect the bonding effect.

Single side corrugated locomotive speed is too slow, will increase the amount of corrugated peak glue, at the same time, because of the slow speed, too high temperature will make the adhesive premature curing and lose good bonding effect, or even with a hand will glue open.

Double-sided locomotive speed too fast will cause waveform corrugated peak glue amount reduction, at the same time, because of too fast speed, the heat consumption increases, the temperature decreases, the adhesive gelatinization is not good, resulting in poor bond.

Too low double-sided locomotive speed will increase the amount of corrugated corrugated corrugated corrugated peak glue, temperature aggregation and excessive baking corrugated cardboard, so that the adhesive structure is destroyed, resulting in corrugated cardboard scorch.

The principle of tile wire adhesive production requirements

In the production of adhesives, in strict accordance with the operating procedures and technological requirements of production, while taking into account the influence of various factors, to ensure the adhesion effect of corrugated cardboard. In general, the following principles should be paid attention to:

1. The quality of raw and auxiliary materials used should be guaranteed

2. All kinds of raw and auxiliary materials should be measured accurately when feeding

3. Use good water quality as far as possible

4. Ensure the appropriate temperature of the production environment and site

5. Ensure proper viscosity

6. Ensure proper concentration

7. The finished adhesive has no sediment

8. The viscosity of the finished adhesive does not change much in storage and use

9. Ensure good initial viscosity and permeability in the production process