Cardboard warping latest solution (on)

Warp cardboard on a corrugated cardboard production line is a commonplace problem. Although the gluing technology has greatly improved in the past, the quality control of raw material production equipment has become more stringent, and the performance of corrugated board production equipment has gradually increased, the problem of board warping has not been fundamentally solved. According to data from the FEFCO (European Corrugated Paperboard Industry Association), a European integrated corrugated box production plant will produce 66 million square meters of corrugated board annually, with an output value of approximately 20 million pounds, of which the total amount of board waste is approximately 11% of the total output. % (13% in the UK). For a carton manufacturer, the cost of this is about 2 million pounds a year. Some paper board manufacturers waste even as much as 25% of board production, and the main cause of waste is cardboard warpage. Even though these warp paperboards can be recycled and reused, the cost waste caused by the production of warped paperboard alone is already as high as 250,000 pounds per year.

When it comes to the question of “what is the total volume of warped cardboard?”, the answer obtained from an integrated carton manufacturer is often less than the answer obtained from a cardboard manufacturer, which is about 6% less. However, if asked to continue, the proportion of warped cardboard in integrated carton manufacturers is usually higher than that of paperboard manufacturers. Many integrated carton manufacturers will say that cardboard warping is not a problem, mainly because the cardboard they produce is for their own use, and most of the warped cardboard can still go through processing machinery, but it will only greatly slow down the machine's speed. This will inevitably lead to a decline in the production efficiency of carton manufacturers.

It is very difficult to understand the exact amount of warped cardboard. To date, no device has been able to measure the warpage of cardboard on a real-time, high-speed conveyor belt. The current measurement method is mainly subjectively performed by the operator on the stacker. The observations depend on their technical proficiency, experience, and work attitude. On-duty operators differ in their personal "technical parameters". This phenomenon has the common goal of all corrugated cardboard and carton manufacturers to ensure maximum production efficiency.

The latest solution

Now, for the first time, Tellima Technology Co., Ltd., the “expert” in the field of electronic control in the United Kingdom, has successfully developed a device that can detect the warpage of cardboard in real-time production—the Svncro Pro System e SPl200 system. The Svncro Profile SPl200 system has just been patented, combined with precise laser detection and high-performance digital signal encoder (DSP DigitaI SignaIProcessor) technology, can quickly determine the detection point, accurate and truthful determination of cardboard warping problems. A row of laser beam devices is fixedly mounted on the laser bar. With these laser beam devices, the distance from the laser bar to the cardboard can be measured with an accuracy of 0.5 mm. On a state-of-the-art conveyor with a running speed of 400 m/min, longitudinal inspection accuracy can reach 1 mm. Multiple digital signal encoder processors have full processing power and their 1200 instructions per second processing power can quickly process data, generating measurement data values ​​and warping cardboard view files. The Syncro Profile SPl200 system accurately discovers, measures, and demonstrates most of the board warpage forms including warp, warp, upturn, and down warp. These processed data can be widely used in production, which is helpful for reducing the degree of warpage cardboard and the number of produced and improving the production process.

Real-time display function

The data generated by the Syncro Profi,e SPl200 system can be displayed in real-time on any computer in the plant area. The display includes the warping type, view file and warpage measurement data index. By using SyncroPro's eSPl200 system, operators can also see a high-definition matrix demonstration of the entire corrugated cardboard production line. The flashing lighthouse device can promptly warn the operator to pay attention to the cardboard warping condition. Even without automatic closed circuit warping control, operators can quickly take effective measures to reduce warpage.

Objective and accurate data were used to determine the degree of warpage of the board; the cause of board warpage caused by the corrugated board production line was understood, and in fact half of the warpage of the corrugated board was solved. In order to ensure high-quality flat cardboard production, it is necessary to correctly set the equipment parameters, and it is very important to know the various data that causes the warping to correctly set the production parameters. The Syncro Profile SP1200 system can record all data related to warpage board data, including machine speed, face paper moisture content, temperature, roll strength, and raw material supplier information. The data is also marked with data generation time, related information, and can be used to diagnose the cause of board warpage by a remote computer. When the next production of similar products, these data information is used as an initial setting to improve the quality of production.

(to be continued)