Cardboard corrugator…. Bonding error phenomenon and solutions.
False bonding is a phenomenon that we will encounter when corrugated machine comes into the production of cartons. The following Rongxin carton machinery will simply analyze the reasons and solutions of false bonding of corrugated machine.
Cause analysis:
A, in and corrugated false bonding
1, adhesive viscosity is not enough; 2, the amount of glue is too small; 3, adhesive deterioration; 4. The speed of corrugated machine is too fast; 5, corrugated machine speed is too slow; 6, corrugating machine pressure roller pressure uneven;
7, corrugator roller wear in the middle part, resulting in insufficient pressure roller; 8, paper moisture is too high; 9, corrugated machine temperature is too low; 10, the paper tension is too large.
Improvement methods:
1) Adhesive viscosity is not enough: 60-90 seconds in winter, 90-120 seconds in summer; 2) the amount of glue is 1/3 of the width of the corrugated top, that is, A corrugated 1.2 mm, B, C corrugated 1 mm;
3) The storage time after bonding is 48 hours in summer and one week in winter; 4) The temperature of corrugated roller is 150-170℃, and the machine speed is controlled at 70 m/min;
5) The temperature of corrugated roller is 150-170℃, and the machine speed can not be less than 25 m/min; 6) Adjust cylinder pressure to 0.4-0.6mpa;
7) Check whether the running meter completed by corrugate roll production has reached or exceeded; 8) Paper standard moisture: GRADE A 8-12%; B 7-12%; C grade 8-13%;
9) The temperature of corrugated roller shall not be lower than 120℃. The Infrared measuring point is the contact point between corrugated and base paper. 10) Adjust and ensure the tension of the paper to the appropriate state.
B, surface and corrugated fake bonding
1) paper tension is too large; 2) The gap between the rollers of the secondary coating machine is too large; 3) Uneven clearance on both sides of the rubber roller of the secondary coating machine.
Post time: Jul-10-2022