Tile wire adhesive technology reform

The technical innovation of the rubber line in tile

Modification of the gluing system

The overall cost mainly occurs on the tile line, and the technical reform of the tile line is particularly important. Earlier tile lines were designed for high-gram weight boards and are now under pressure from cost. Carton enterprises began to use low-weight paper, requiring the accuracy of the equipment to be further improved. For example, 250g of face paper, a larger amount of glue, glue is not easy to penetrate the face paper, it will not be transparent, after the weight reduction of the face paper, the glue required thickness of 0.1mm ~ 0.15mm. However, the rubber thickness is much larger than this value, and the accuracy of the equipment itself is not high, and the amount of error in the glue is even greater. This will cause problems of collapse and cardboard softening. The original sizing system cannot be adapted, so the entire sizing system must be modified.

The glue line before transformation: the width of the glue line is large and uneven, the surface paper is clear, and the printing effect is not good. If the pressure is reduced, the cardboard will be soft and the paper weight must be increased. The speed of the tile line will drop sharply, and the amount of glue will increase.

After the transformation, the glue line: the width of the glue line is greatly reduced, the glue line is fine and neat; the pressure change of the paper board is increased, and the space for reducing the weight of the paper is provided; the surface paper is impenetrable and the flatness of the paper board is improved.

Once the sizing system is modified, the glue must be thin and fine, so the quality of the glue must be improved to some extent. In the adhesive part of the paperboard, the quality of the glue itself is still the most important. The quality of the glue directly affects the quality of the paperboard.

The reform of glue formula

To produce high-quality paperboard with low-weight paper, it is necessary to have high-precision equipment and glue with excellent performance. In terms of the technical reform of the parts of the gluing system, there are two things that are not hindered: First, The transformation of plastic devices, and second, the innovation of glue configuration, the above two points must be decided according to the actual situation of each company. In the case of using starch, caustic soda, borax and other materials to make glue on their own, the quality of the starch material should be strictly controlled. Starch water content can not be too high, generally should be maintained at 12% to 18%: the protein content of starch should not exceed 1%, the content of O. Less than 5% is better.

To judge the quality of the formulated glue formula, the adhesive strength, the drying speed, the viscosity, the solid content, and the pH value can generally be considered. Adequate bond strength is the basis for the function of the carton. Generally, the heat-resistant test method is used to test the adhesive strength of the paperboard. In the vast majority of cases, it is desirable to dry the glue faster. The general hand-bonding is better. The process is slow, requires a long dry time, the bonding speed of the machine is faster, and a shorter initial drying time is required. Therefore, the glue configuration matching the bonding process is required in production. The viscosity value is a major factor that directly affects the quality of the bond. If the viscosity is too large, the coating of the glue is too thick, the amount of glue that is consumed is large, the drying speed is slow, and the viscosity is too small, the coating is thin, and the drying is too fast, then it is easy to appear. Poor adhesion, so in the production of real-time viscosity testing, regular formulas to improve and adjust the viscosity to keep it within the desired viscosity range. The higher the glue solid content, the stronger the adhesive force, the faster the drying speed, the higher the production efficiency, the less water absorbed by the paperboard, and the better the hardness of the paperboard produced, so the high solid content is favorable for other technical indicators. Improve production efficiency and maintain quality. In the process of glue formula reform, the most important thing is to constantly test various technical parameters, monitor the quality of cardboard in real time, and determine the glue formula to be used finally when the product quality reaches a stable state for a long period of time. This is not immutable, and quality monitoring at any time must be implemented in the long term. If problems occur, they must be adjusted in a timely manner.

New software and new system add luster to wet equipment

With the advent of automatic stacking, control systems, and high-speed, high-quality feed systems for a variety of equipment, the quality of the carton design and the overall performance of the carton are all the more important. The quality of the paperboard is the most critical factor in determining the quality of the carton. Modern carton factories cannot accept warp cardboard, layered cardboard, cracked cardboard, or cardboard that is not rigid enough.

In the whole production process, control the tension of the base paper web (especially in the process of splicing), the temperature and humidity of the paper, the precise degree of paste usage, the solid content of the paste, the viscosity and the temperature on the stability of the paperboard quality Plays an important decisive role. Rapid heating and uploading of the control absorbent belt on the double-sided machine is of great significance for controlling the warpage of the board. Over the past few years, these projects have been the focus of research and development by suppliers. In today’s market that calls for more new models to meet the needs of different new packaging designs, the rapid replacement of the base paper rolls, the setting of the splicer, and the rapid change of the stencil on the single-sided machine are all essential functions of the wet-end equipment. The advanced wet equipment requires very few operators and can reduce the occurrence of errors, thereby achieving cost reduction.

As we all know, the investment in the wet line equipment of the tile line is usually the main purpose is to improve the quality of the cardboard, and improve the performance of the wet end device will help improve the overall production efficiency of the factory. As wet-end equipment is the “core” of the carton production workshop, the machinery suppliers are also constantly investing funds to develop new equipment to meet the needs of users:

The wet department management software in Vonderheiden, Germany, is a software system that helps older equipment meet modern and new equipment standards. With this software system, the entire tile operation can be controlled at one terminal, and all production units are connected via Ethernet. Using a color touch screen, operators can control bridging, paper racks, and base paper transportation systems including synchronizing sheets, and can also be combined with production planning software such as Kiwiplan. In addition, the operator can also control the single-sided machine, glue application system, preheating section, pull-out roller and heating section.

Japan lsowa lCS | | gluing machine design goals are: smooth paper, eliminate cardboard warping, reduce the tension often caused by the cardboard layer tension vibration. ICSll's speed of the paper is 400m/min (grabbing type is 250m/min). At the same time, because it can maintain smooth operation and stable web tension under adverse conditions, it ensures the quality of the paperboard.

These new features and new advantages of ICS|1 are equipped with the CCTl--Watt-wire continuous tension infeed system. The purpose of developing CCT1 is to reduce and eliminate the delamination of the board that occurs on single-sided and double-sided machines. Because the temperature of the base paper is very easy to drop, the quality of the web is easily affected at high speeds, so the paperboard is prone to delamination. To avoid this, Isowa has developed CCTl with a special tension control roller combined with an AC servo drive motor, a PLC and a floating roller guide roller. When the base paper passes through the CCTl roller, the original paper force fluctuations generated by the splicer are eliminated and the continuous tension is set by the CCTl's advanced control system. Stable tension not only reduces or eliminates board delamination but also eliminates other common problems such as splitting and warping. The floating roller driven by the AC servo motor can make the paper contact more stable and reliable, and make the paper take more precise. In addition to ensuring accuracy, PLC control makes the device easier to maintain.