False bonding phenomenon and solution of cardboard corrugating machine.

False bonding phenomenon and solution of cardboard corrugating machine.
False bonding is a phenomenon that our corrugator will encounter when producing cartons. Below, Rongxin Carton Machinery will briefly analyze the reasons and solutions for false bonding of corrugators.
Cause Analysis:
a, lining and corrugated false bonding
1. The viscosity of the adhesive is not enough; 2. The amount of glue applied is too small; 3. The adhesive is deteriorated; 4. The machine speed of the corrugating machine is too fast; 5. The machine speed of the corrugating machine is too slow; ;
7. The middle part of the corrugating roller is worn, resulting in insufficient pressure on the pressure roller; 8. The paper contains too much moisture; 9. The temperature of the corrugating machine is too low; 10. The paper tension is too large.

ways to improve:
1) Insufficient adhesive viscosity: 60-90 seconds in winter, 90-120 seconds in summer; 2) The amount of glue applied is 1/3 of the width of the corrugated top, that is, 1.2 mm for A corrugation, 1 mm for B and C corrugation;
3) After the adhesive is blended, the storage time is 48 hours in summer and one week in winter; 4) The temperature of the corrugating roll is 150-170 ° C, and the machine speed is controlled at 70 m/min;
5) The temperature of the corrugating roller is 150-170℃, and the machine speed cannot be lower than 25 m/min; 6) Adjust the cylinder pressure to 0.4-0.6Mpa;
7) Calculate whether the running meters completed by the production volume of corrugated rolls have reached or exceeded; 8) The standard moisture content of paper: A grade 8-12%; B grade 7-12%; C grade 8-13%;
9) The temperature of the corrugating roller shall not be lower than 120℃. The measuring point of Infrared is the contact point between the corrugated and the base paper; 10) Adjust and ensure that the tension of the paper is adapted to the state.
b, surface and corrugated false bonding
1) The paper tension is too large; 2) The gap between the rubber rollers of the secondary gluing machine is too large; 3) The gap between the two sides of the rubber rollers of the secondary gluing machine is uneven.