The corrugated four-layer corrugated board has a layer of corrugated medium, and a layer of glue is applied between the two layers of corrugated paper to increase the hardness and thickness of the double-layer corrugated paper after drying, so it is thicker than the same thickness. The strength of the three-layer corrugated board has more than doubled. 1. Four-layer corrugated board bonding points (1) When the corrugated core paper is compounded, the coating glue will increase the water content of the corrugated core paper, and after the adhesive is dried, the corrugated core paper must be prevented from embrittlement, so that the water content is small, the permeability is slow, and the coating is easy to be uniformly coated. Corrugated paper composite adhesives are critical. (2) Under the premise of satisfying the bonding strength after compounding, the amount of sizing should be as small as possible. (3) Before pressing the corrugated board, it is also important to control the humidity of the composite corrugated medium. Too much humidity not only affects the forming, but also causes degumming during compounding; if the humidity is too small, the peak will be embrittled and broken when the corrugated sheet is bent. (4) The corrugated type of four-layer corrugated board should be specially designed and designed according to the thickness of two layers of corrugated core paper and one layer of glue to produce the ideal corrugated board. (5) When processing four layers of corrugated cardboard on a vacuum adsorption single-sided machine, care should be taken to adjust the adsorption system (position, clearance and air volume of the suction hood and corrugating roller) and the heating system; the corrugated core paper after compounding is required to be higher. The temperature can transfer heat to the peak and meet the gelatinization temperature requirements. The hardness of the thick corrugated medium will become larger, and it will easily separate from the corrugating roller after molding, affecting the coating and compounding, and producing quality problems such as high and low enthalpy, collapse, degumming and "wood ear", so there must be sufficient adsorption air volume. And the negative pressure and the heating temperature can ensure the smooth application of the composite after the corrugated board is formed. 2. Relationship between speed and cardboard quality (1) The most stable and economical speed of the production line should be the ideal adjustment speed. (2) The strength and humidity of the paper should be suitable for the speed of the vehicle. (3) The fluctuation of the speed of the car will affect the humidity control of the paper. The more stable the vehicle speed, the more stable the humidity control of each layer of paper, and the more stable the quality of the paperboard. A good heating system is necessary. The corrugated four-layer corrugated board has a layer of corrugated medium, and a layer of glue is applied between the two layers of corrugated paper to increase the hardness and thickness of the double-layer corrugated paper after drying, so it is thicker than the same thickness. The strength of the three-layer corrugated board has more than doubled. 1. Four-layer corrugated board bonding points (1) When the corrugated core paper is compounded, the coating glue will increase the water content of the corrugated core paper, and after the adhesive is dried, the corrugated core paper must be prevented from embrittlement, so that the water content is small, the permeability is slow, and the coating is easy to be uniformly coated. Corrugated paper composite adhesives are critical. (2) Under the premise of satisfying the bonding strength after compounding, the amount of sizing should be as small as possible. (3) Before pressing the corrugated board, it is also important to control the humidity of the composite corrugated medium. Too much humidity not only affects the forming, but also causes degumming during compounding; if the humidity is too small, the peak will be embrittled and broken when the corrugated sheet is bent. (4) The corrugated type of four-layer corrugated board should be specially designed and designed according to the thickness of two layers of corrugated core paper and one layer of glue to produce the ideal corrugated board. (5) When processing four layers of corrugated cardboard on a vacuum adsorption single-sided machine, care should be taken to adjust the adsorption system (position, clearance and air volume of the suction hood and corrugating roller) and the heating system; the corrugated core paper after compounding is required to be higher. The temperature can transfer heat to the peak and meet the gelatinization temperature requirements. The hardness of the thick corrugated medium will become larger, and it will easily separate from the corrugating roller after molding, affecting the coating and compounding, and producing quality problems such as high and low enthalpy, collapse, degumming and "wood ear", so there must be sufficient adsorption air volume. And the negative pressure and the heating temperature can ensure the smooth application of the composite after the corrugated board is formed. 2. Relationship between speed and cardboard quality (1) The most stable and economical speed of the production line should be the ideal adjustment speed. (2) The strength and humidity of the paper should be suitable for the speed of the vehicle. (3) The fluctuation of the speed of the car will affect the humidity control of the paper. The more stable the vehicle speed, the more stable the humidity control of each layer of paper, and the more stable the quality of the paperboard. A good heating system is necessary at this time. Article source address: http:// Bathroom Faucets,Gold Bathroom Faucet,Black Bathroom Faucet,Waterfall Bathroom Faucet Kaiping Yufa Sanitary Ware Co.,ltd , https://www.dlsenbathroom.com